Camera Actuator

Abstract

A camera actuator according to an embodiment includes a housing, a prism unit disposed within the housing, a drive unit that tilts the prism unit, a second pivot plate disposed on a side wall of the housing, and a first pivot plate disposed between the second pivot plate and the prism unit, the prism unit including a pulling magnet, and the prism unit tilts around a rotation reference axis of the first pivot or second pivot plate while being supported by the housing by the attractive force between the pulling magnet and the second pivot plate.

Description

[Technical field]

[0001] The embodiment relates to a camera actuator. [Background technology]

[0002] The camera module photographs an object and stores the photographed object as an image or video. The camera module is installed in mobile terminals such as mobile phones, notebooks, drones, vehicles, and the like.

[0003] Meanwhile, ultra-compact mobile camera modules are built into portable devices such as smartphones, tablet PCs, and notebooks, and such mobile camera modules can perform an autofocus function that automatically adjusts the distance between the image sensor and the lens to align the focal length of the lens.

[0004] Recently, camera modules have been able to perform a zooming function, such as zooming up or zooming out, by increasing or decreasing the magnification of a distant object through a zoom lens.

[0005] Recently, camera modules have adopted image stabilization (IS) technology to correct or prevent image distortion caused by camera movement due to an unstable fixing device or user movement.

[0006] Such image stabilizer (IS) technologies include optical image stabilizer (OIS) technology and image stabilizer technology using an image sensor.

[0007] OIS technology compensates for movement by changing the path of light. Image distortion prevention technologies that use image sensors have both mechanical and electronic motion compensation methods, but OIS technology is more widely adopted. Summary of the Invention [Problem to be solved by the invention]

[0008] One of the technical challenges of the embodiment is to provide an ultra-slim, ultra-compact camera actuator and a camera module including the same.

[0009] In addition, one of the technical objectives of the embodiments is to provide a camera actuator and a camera module including the same, in which a moving plate that serves to tilt a prism unit along multiple axes is formed from a magnetic material, so that the moving plate serves as an axis for tilting the prism unit and also serves as a fixing mechanism for fixing the prism unit to a housing.

[0010] In addition, one of the technical objectives of the embodiment is to provide a camera actuator and a camera module including the same that can eliminate lens size limitations in a lens assembly of an optical system when realizing an OIS, thereby ensuring a sufficient amount of light.

[0011] In addition, one of the technical objectives of the embodiment is to provide a camera actuator and a camera module including the same that can resolve the technical contradiction that, in order to increase the amount of light received for clear image quality, the size of a variable lens for driving an OIS needs to be large, but when the size of the variable lens becomes large, it is caught up in the thickness limit of the camera module.

[0012] In addition, one of the technical objectives of the embodiment is to provide a camera actuator and a camera module including the same that can minimize the occurrence of decenter and tilt phenomena when implementing an OIS and provide the best optical characteristics.

[0013] Also, one of the technical objectives of the embodiment is to provide a camera actuator capable of preventing magnetic field interference with a magnet for AF or Zoom when implementing an OIS, and a camera module including the same.

[0014] In addition, one of the technical objectives of the embodiment is to provide a camera actuator and a camera module including the same that can prevent magnetic field interference between magnets attached to each lens assembly when multiple lens assemblies are driven by electromagnetic force between a magnet and a coil during implementation of AF or Zoom.

[0015] Also, the embodiment provides a camera actuator capable of preventing detachment of the magnet and the yoke, and a camera module including the same.

[0016] Also, one of the technical objectives of the embodiment is to provide a camera actuator capable of implementing OIS with low power consumption and a camera module including the same.

[0017] Also, one of the technical objectives of the embodiments is to provide a camera actuator capable of preventing generation of friction torque during lens movement during zooming in a camera module, and a camera module including the same.

[0018] In addition, one of the technical objectives of the embodiment is to provide a camera actuator and a camera module including the same that can prevent lens decenter and lens tilt when the lens moves during zooming in a camera module, and the phenomenon in which the center of the lens does not coincide with the central axis of the image sensor.

[0019] Also, one of the technical objectives of the embodiment is to provide a camera actuator that can increase the thrust force and simultaneously increase the sensitivity of the Hall sensor, and a camera module including the same.

[0020] The technical problems of the embodiments are not limited to those described in this section, but include those that can be understood from the entire description of the invention. [Means for solving the problem]

[0021] A camera actuator in one embodiment includes a housing, a prism unit disposed within the housing, a drive unit that tilts the prism unit, and a moving plate disposed between the housing and the prism unit, the prism unit including a prism mover having a storage section and a prism disposed within the storage section of the prism mover, a pulling magnet that generates an attractive force together with the moving plate is disposed on the prism mover, and the prism mover tilts around a rotational reference axis of the moving plate while being supported by the housing by the attractive force between the moving plate and the pulling magnet.

[0022] The moving plate is made of a magnetic material.

[0023] The moving plate further includes a first and a second moving plate, the second moving plate being fixedly disposed within a recess of the housing and constructed of a magnetic material for generating an attractive force with the pulling magnet, and the first moving plate being disposed between the prism mover and the second moving plate and supported by the housing by the attractive force.

[0024] In addition, a plurality of first moving protrusions arranged in a first direction are arranged on one surface of the first moving plate facing the prism mover, and a plurality of second moving protrusions arranged in a second direction perpendicular to the first direction are arranged on one surface of the second moving plate facing the first moving plate.

[0025] In addition, the prism unit is provided to be rotatable in the second direction around a virtual first line formed by the plurality of first moving protrusions as a reference axis, and is provided to be rotatable in the first direction around a virtual second line formed by the plurality of second moving protrusions as a reference axis.

[0026] In addition, on one outer surface of the prism mover opposite to one surface of the first moving plate, there is a first recess in which the spring magnet is arranged, and a plurality of second recesses spaced apart in the first direction from the first recess and in which the plurality of first moving protrusions are arranged.

[0027] The first moving plate further includes a plurality of first moving recesses disposed in the second direction on another surface of the first moving plate opposite to one surface of the second moving plate, into which the second moving protrusions are inserted.

[0028] In addition, the first moving plate includes a plurality of first auxiliary protrusions arranged at a distance in the second direction on the one surface thereof, and the second moving plate includes a plurality of second auxiliary protrusions arranged at a distance in the first direction on the one surface thereof.

[0029] Moreover, the rotation range of the prism unit in the second direction is limited by the multiple first auxiliary protrusions, and the rotation range of the prism unit in the first direction is limited by the multiple second auxiliary protrusions.

[0030] Furthermore, on the one surface of the first moving plate, the multiple first moving protrusions and the multiple first auxiliary protrusions are arranged in a cross shape with a first region as a reference, and on the one surface of the second moving plate, the multiple second moving protrusions and the multiple second auxiliary protrusions are arranged in a cross shape with a second region as a reference, and the first and second regions overlap with the pulling magnet in a third direction.

[0031] On the other hand, a camera actuator according to an embodiment includes a housing, a prism unit disposed within the housing, a drive unit that tilts the prism unit, a first pivot plate disposed on a side wall of the housing, and a second pivot plate disposed between the first pivot plate and the prism unit, the prism unit including a pulling magnet, and the prism unit tilts based on a rotation reference axis of the first pivot or second pivot plate while being supported by the housing by the attractive force between the pulling magnet and the first pivot plate.

[0032] The first pivot plate is made of a magnetic material that generates an attractive force together with the pulling magnet.

[0033] The second pivot plate is made of a magnetic or non-magnetic material.

[0034] Additionally, the first pivot plate includes a plurality of first pivot protrusions, and the second pivot plate includes a plurality of second pivot protrusions.

[0035] In addition, the plurality of first pivot protrusions are spaced apart in a first direction on one surface of the first pivot plate, and the plurality of second pivot protrusions are spaced apart in a second direction perpendicular to the first direction on one surface of the second pivot plate.

[0036] Additionally, the plurality of first pivot protrusions protrude toward the prism mover from one surface of the first pivot plate, and the plurality of second pivot protrusions protrude toward the prism mover from one surface of the second pivot plate.

[0037] The prism mover also includes a first recess in which the pulling magnet is accommodated and a plurality of second recesses in which the plurality of second pivot protrusions are accommodated, the first recess being disposed in a central region between the plurality of second recesses.

[0038] A camera actuator according to an embodiment includes a housing, a prism unit disposed within the housing, a drive unit for tilting the prism unit, a moving plate disposed between the housing and the prism unit, and a support unit for supporting the prism unit on the housing, the moving plate including a first protrusion disposed in a first direction on a first surface facing the prism unit, and a second protrusion disposed in a second direction perpendicular to the first direction on a second surface facing the housing.

[0039] The prism unit also includes a prism mover having a housing portion and a prism disposed in the housing portion of the prism mover, and the moving plate is disposed between the mutually opposing surfaces of the prism mover and the housing.

[0040] In addition, the first protrusion includes first and second sub-first protrusions arranged at a distance in the first direction based on the center of the first surface of the moving plate, and the second protrusion includes first and second sub-second protrusions arranged at a distance in the second direction based on the center of the second surface of the moving plate.

[0041] In addition, the prism unit rotates in the second direction around a virtual first line formed by the first and second sub-first protrusions as a reference axis, and rotates in the first direction around a virtual second line formed by the first and second sub-second protrusions as a reference axis.

[0042] The first protrusion also includes first and second sub-first recesses arranged on the first surface and corresponding to the first and second sub-second protrusions, and first and second sub-second recesses arranged on the second surface and corresponding to the first and second sub-first protrusions.

[0043] In addition, a plurality of first recesses corresponding to the first and second sub-first protrusions of the moving plate are arranged on an outer surface of the prism mover facing the housing, and a plurality of second recesses corresponding to the first and second sub-second protrusions of the moving plate are arranged on an inner surface of the housing facing the outer surface of the prism mover.

[0044] The prism mover also includes a third recess disposed at a position corresponding to between the plurality of first recesses and corresponding to the support portion, and the housing includes a fourth recess disposed at a position corresponding to between the plurality of second recesses and corresponding to the support portion.

[0045] The prism mover also includes a plurality of fifth recesses positioned outside the plurality of first recesses and corresponding to the support portions, and the housing includes a plurality of sixth recesses positioned outside the plurality of second recesses and corresponding to the support portions.

[0046] The support portion further includes a first pulling member and a second pulling member respectively arranged on the prism mover and the housing, one of the first pulling member and the second pulling member being a magnet and the other of the first pulling member and the second pulling member being a yoke, and the prism unit and the moving plate being supported on the housing by an attractive force between the first and second pulling members.

[0047] Additionally, the first pulling member is disposed within the third recess and the second pulling member is disposed within the fourth recess.

[0048] The support portion includes an elastic member disposed on the prism mover and the housing, and the prism mover and the moving plate are supported on the housing by the elastic restoring force of the elastic member.

[0049] The elastic member further includes first and second elastic members, one ends of the first and second elastic members being respectively disposed in the plurality of fifth recesses, and the other ends of the first and second elastic members being respectively disposed in the plurality of sixth recesses.

[0050] Moreover, the imaginary straight lines connecting the plurality of first recesses are parallel to the imaginary straight lines connecting the plurality of fifth recesses.

[0051] In addition, the imaginary straight line connecting the second recesses is perpendicular to the imaginary straight line connecting the sixth recesses. Effect of the Invention

[0052] According to the embodiment, there is a technical effect of providing an ultra-slim, ultra-compact camera actuator and a camera module including the same.

[0053] For example, according to the embodiment, by utilizing the space below the prism unit and arranging the driving units so that they overlap each other, a technical effect is achieved that an ultra-slim, ultra-compact camera actuator and a camera module including the same can be provided.

[0054] For example, according to the embodiment, with the ball bearings in place, the prism unit is tilted to the first axis or the second axis by the electromagnetic force, which is the driving force of the driving unit, thereby minimizing the occurrence of decentering and tilting phenomena when implementing the OIS, thereby achieving the best optical characteristics and achieving the technical effect of implementing an ultra-slim and ultra-compact camera actuator.

[0055] In addition, according to the embodiment, there is a technical effect of providing a camera actuator capable of securing a sufficient amount of light by eliminating the lens size limitation in the lens assembly of the optical system when realizing the OIS, and a camera module including the same.

[0056] Also, according to the embodiment, the prism unit can be tilted to the first axis and the second axis by using a second moving plate having a plurality of first moving protrusions arranged in a first axis direction based on the center and a plurality of second moving protrusions arranged in a second axis direction perpendicular to the first axis. According to this embodiment, by tilting the prism unit using a moving plate including the first and second moving protrusions, the structure of the camera actuator can be simplified compared to a structure including a ball bearing.

[0057] Furthermore, according to the embodiment, the prism unit can be tilted using one moving plate, which allows the prism to be tilted in two axes using one moving plate, thereby simplifying the structure for tilting the prism unit.

[0058] Also, according to the embodiment, it is possible to enable two-axis tilt of the prism unit by using a first moving plate and a second moving plate separated from each other. According to the embodiment, the moving plates providing the rotation axes for the two-axis tilt of the prism unit are separately arranged, thereby ensuring the stability of the rotation drive of the prism unit. In more detail, the tilt of the prism unit about the first axis is performed by the first moving plate, and the tilt about the second axis is performed by the second moving plate, thereby ensuring the stability of the rotation drive of the prism unit and improving the operational reliability.

[0059] In addition, according to the embodiment, the moving plate that serves to tilt the prism unit on multiple axes is made of a magnetic material, and the moving plate serves as an axis for tilting the prism unit and also serves as a fixing member for fixing the prism unit to the housing, thereby reducing the number of parts and the part costs.

[0060] According to another embodiment, an elastic member is disposed between the housing and the prism unit, and the prism unit is tilted to a first axis or a second axis by a driving force of a driving unit while being supported by the housing through the elastic member. In particular, the prism unit is tilted to a first axis or a second axis by an elastic member arranged in a first direction and / or a second direction between the housing and the prism unit. That is, by controlling the tilt to a first axis or a second axis by an electromagnetic force, which is the driving force of the driving unit, it is possible to minimize the occurrence of decent and tilt phenomena when implementing an OIS, and to obtain the best optical characteristics.

[0061] In addition, according to the embodiment, there is a technical effect of providing a camera actuator and a camera module including the same that can minimize the occurrence of decent and tilt phenomena when implementing an OIS and provide optimal optical characteristics.

[0062] For example, according to the embodiment, by providing a driving unit 320 stably arranged on the housing 310 and controlling the tilt of the prism unit 330 to a first axis or a second axis, it is possible to minimize the occurrence of decentering and tilting phenomena when implementing the OIS, thereby achieving the technical effect of achieving the best optical characteristics.

[0063] In addition, according to the embodiment, there is a technical effect of providing a camera actuator capable of implementing an OIS with low power consumption and a camera module including the same.

[0064] For example, according to the embodiment, unlike the conventional method of moving multiple solid lenses, a camera actuator capable of implementing an OIS with low power consumption and a camera module including the same can be provided by providing a driving unit 320 and tilting the prism unit 330 to a first axis or a second axis to implement an OIS.

[0065] The camera actuator and the camera module including the same according to the embodiment have a technical effect of solving the problem of friction torque occurring during zooming.

[0066] For example, according to the embodiment, the lens assembly is driven with the first guide part and the second guide part, which are precisely numerically controlled within the base, combined, thereby reducing frictional torque and reducing frictional resistance, resulting in technical effects such as improved driving force during zooming, reduced power consumption, and improved control characteristics.

[0067] In the conventional technology, when a guide rail is placed on the base itself, a gradient occurs along the injection direction, making it difficult to manage the size. In addition, if the injection is not performed properly, there is a technical problem that the friction torque increases and the driving force decreases.

[0068] On the other hand, according to the embodiment, a guide rail is not provided on the base itself, but a first guide part and a second guide part are separately formed and assembled to the base, which has a special technical effect of preventing the occurrence of a gradient along the injection direction.

[0069] In addition, the camera actuator according to the embodiment and the camera module including the same have a technical effect of increasing the thrust force and simultaneously increasing the sensitivity of the Hall sensor.

[0070] In addition, according to the embodiment, there is a technical effect of providing a camera actuator capable of preventing magnetic field interference with a magnet for AF or Zoom when implementing an OIS, and a camera module including the same.

[0071] In addition, according to the embodiment, there is a technical effect of providing a camera actuator and a camera module including the same, which can prevent magnetic field interference between magnets attached to each lens assembly when multiple lens assemblies are driven by electromagnetic force between magnets and coils during implementation of AF or Zoom.

[0072] In addition, the embodiment has a technical effect of providing a camera actuator capable of preventing detachment of a magnet and a yoke, and a camera module including the same.

[0073] The technical effects of the embodiments are not limited to those described in this section, but include those that can be understood from the entire description of the invention. [Brief description of the drawings]

[0074] [Figure 1] FIG. 1 is a perspective view of a camera module according to an embodiment. [Figure 2a] FIG. 2a is a perspective view of the camera module according to the embodiment shown in FIG. 1 with the case omitted. [Figure 2b] FIG. 2b is an exploded perspective view of the camera module according to the embodiment shown in FIG. 2a. [Figure 3a] FIG. 3a is a perspective view of a second camera actuator of a camera module according to an embodiment. [Figure 3b] FIG. 3b is an exploded perspective view of the second camera actuator in the first embodiment. [Figure 4a] FIG. 4a is a perspective view of each component of the second camera actuator. [Figure 4b] FIG. 4b is a perspective view of each component of the second camera actuator. [Figure 4c] FIG. 4c is a perspective view of each component of the second camera actuator. [Figure 4d] FIG. 4d is a perspective view of each configuration of the second camera actuator. [Figure 4e] FIG. 4e is a perspective view of each component of the second camera actuator. [Figure 4f] FIG. 4f is a perspective view of each component of the second camera actuator. [Figure 4g] FIG. 4g is a perspective view of each configuration of the second camera actuator. [Figure 5a] FIG. 5a is a perspective view of each component of the second camera actuator. [Figure 5b] FIG. 5b is a perspective view of each component of the second camera actuator. [Figure 6a] FIG. 6a is a diagram showing the coupling relationship between the housing, the prism unit, the support part 360 and the moving plate in the second camera actuator. [Figure 6b] FIG. 6b is a diagram showing the coupling relationship between the housing, the prism unit, the support 360 and the moving plate in the second camera actuator. [Figure 7a] FIG. 7a is a view showing a modification of the arrangement position of the pulling magnet according to the embodiment. [Figure 7b] FIG. 7b is a view showing a modification of the arrangement position of the pulling magnet according to the embodiment. [Figure 8] FIG. 8 is an exploded perspective view of the second camera actuator according to the second embodiment. [Figure 9a] FIG. 9a is a perspective view of a housing of a second embodiment of the second camera actuator. [Figure 9b] FIG. 9b is a view showing the elastic member of the support being coupled to the housing of FIG. 9a. [Figure 9c] FIG. 9c is a perspective view of a prism unit of a second embodiment of the second camera actuator. [Figure 9d] FIG. 9d is a diagram showing the prism unit of FIG. 9b to which an elastic member of a support is coupled. [Figure 9e] FIG. 9e is a combination diagram of the support, the prism unit and the housing. [Figure 10a] FIG. 10a is an exemplary diagram for the operation of the second camera actuator according to the first and second embodiments. [Figure 10b] FIG. 10b is an exemplary diagram for the operation of the second camera actuator according to the first and second embodiments. [Figure 11] FIG. 11 is an exploded perspective view of the second camera actuator according to the third embodiment. [Figure 12a]FIG. 12a is a perspective view of the housing of the second camera actuator in the third embodiment. [Figure 12b] FIG. 12b is a perspective view of the housing of FIG. 12a to which a second moving plate is coupled. [Figure 13a] FIG. 13a is a diagram of the prism unit of the second camera actuator in the third embodiment. [Figure 13b] FIG. 13b is a diagram of the prism unit of the second camera actuator in the third embodiment. [Figure 13c] FIG. 13c is a diagram of the prism unit of the second camera actuator in the third embodiment. [Figure 14a] FIG. 14a is a front perspective view of a moving plate that constitutes the second camera actuator in the third embodiment. [Figure 14b] FIG. 14b is a rear perspective view of the moving plate that constitutes the second camera actuator in the third embodiment. [Figure 15] FIG. 15 is a diagram showing the coupling relationship between the housing, the prism unit and the moving protrusion in the second camera actuator of the third embodiment. [Figure 16] FIG. 16 is a diagram showing the coupling relationship between the housing, the prism unit and the moving protrusion in the second camera actuator of the third embodiment. [Figure 17a] FIG. 17a is an exemplary diagram of the operation of the second camera actuator according to the third embodiment. [Figure 17b] FIG. 17b is an exemplary diagram of the operation of the second camera actuator according to the third embodiment. [Figure 18] FIG. 18 is a perspective view of a first camera actuator according to the embodiment. [Figure 19] FIG. 19 is a perspective view of the camera actuator according to the embodiment shown in FIG. 18 with some components omitted. [Figure 20]FIG. 20 is an exploded perspective view of the camera actuator according to the embodiment shown in FIG. 18, with some components omitted. [Figure 21] FIG. 21 is a perspective view of a first guide portion and a second guide portion in the camera actuator according to the embodiment shown in FIG. [Figure 22a] 22a is a perspective view of a first lens assembly in the camera actuator according to the embodiment shown in FIG. 20. FIG. [Figure 22b] FIG. 22b is a perspective view of the first lens assembly shown in FIG. 22a with some components removed. [Figure 23] FIG. 23 is a driving example diagram of the camera actuator according to the embodiment. [Figure 24] FIG. 24 is a cross-sectional view taken along line C1-C2 in the camera actuator according to the embodiment shown in FIG. [Figure 25a] FIG. 25a is an enlarged view of the S region shown in FIG. [Figure 25b] FIG. 25b is a detailed view of the S region shown in FIG. [Figure 25c] FIG. 25c shows magnetic flux data according to the distance between the magnet and the position detection sensor in the example and the comparative example. [Figure 26a] FIG. 26a is a perspective view of a first drive unit 116 in the camera actuator according to the embodiment. [Figure 26b] FIG. 26b shows magnetic flux density distribution data in the comparative example. [Figure 26c] FIG. 26c shows magnetic flux density distribution data in the example. [Figure 27] FIG. 27 is an exemplary diagram of an integrated body in a camera module according to another embodiment. [Figure 28] FIG. 28 is a perspective view of a mobile terminal to which a camera module according to an embodiment is applied. [Figure 29] FIG. 29 is a perspective view of a vehicle to which a camera module according to an embodiment is applied. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0075] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0076] However, the technical concept of the present invention is not limited to the described embodiments, but may be embodied in various forms, and one or more of the components between the embodiments may be selectively combined or substituted within the scope of the technical concept of the present invention.

[0077] Furthermore, unless otherwise clearly and specifically stated, terms (including technical and scientific terms) used in the embodiments of the present invention shall be interpreted as having a meaning that is commonly understood by a person having ordinary knowledge in the technical field to which the present invention belongs, and commonly used terms, such as terms defined in a dictionary, shall be interpreted in consideration of the contextual meaning of the relevant technology.

[0078] Furthermore, the terms used in the examples of the present invention are intended to explain the examples and are not intended to limit the present invention. In this specification, the singular form can include the plural form unless otherwise specified, and when it is described as "at least one (or one or more) of A and B and C," it can include one or more of all possible combinations of A, B, and C.

[0079] In addition, in describing components of the embodiments of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. Such terms are used to distinguish the components from other components, and do not limit the nature or order of the components. When a component is described as being "coupled," "coupled," or "connected" to another component, this includes not only cases where the component is directly coupled, coupled, or connected to the other component, but also cases where the component is "coupled," "coupled," or "connected" by yet another component between the component and the other component.

[0080] In addition, when described as being formed or disposed "above or below" each component, "above or below" includes not only the case where two components are in direct contact with each other, but also the case where one or more other components are formed or disposed between the two components. In addition, when described as "above or below," it can include not only the upper direction but also the lower direction based on one component.

[0081] Furthermore, before describing the embodiments of the present invention, the first direction may refer to the x-axis direction shown in the drawings, and the second direction may be a direction different from the first direction. As an example, the second direction may refer to the y-axis direction shown in the drawings, which is perpendicular to the first direction. Furthermore, the horizontal direction may refer to the first and second directions, and the vertical direction may refer to a direction perpendicular to at least one of the first and second directions. For example, the horizontal direction may refer to the x-axis and y-axis directions in the drawings, and the vertical direction may be a direction perpendicular to the x-axis and y-axis directions in the z-axis direction in the drawings.

[0082] FIG. 1 is a perspective view of a camera module according to an embodiment, FIG. 2a is a perspective view of the camera module of FIG. 1 with some components omitted, and FIG. 2b is an exploded perspective view of the camera module of FIG.

[0083] 1 and 2, a camera module 1000A according to an embodiment may include one or more camera actuators. For example, a camera module 1000A according to an embodiment may include a first camera actuator 100 and a second camera actuator 300. The embodiment may include a case 100c that protects the first camera actuator 100 and the second camera actuator 300.

[0084] The first camera actuator 100 is electrically connected to a first circuit board 410. The first camera actuator 100 supports one or more lenses and can perform an autofocus or zoom function by moving the lenses up and down according to a control signal of a predetermined controller. Also, the second camera actuator 300 is electrically connected to a second circuit board (not shown). The second circuit board is electrically connected to the first circuit board 410. The second camera actuator 300 may be an OIS (Optical Image Stabilizer) actuator. In this case, light incident from the outside may be incident on the second camera actuator 300. Also, the light incident on the second camera actuator 300 may be incident on the first camera actuator 100 by changing the optical path, and the light passing through the first camera actuator 100 may be incident on an optical sensor (not shown).

[0085] Hereinafter, the OIS actuator of the second camera actuator 300 will be described first, and then the first camera actuator 100 will be described.

[0086] FIG. 3a is a perspective view of a second camera actuator of a camera module according to an embodiment.

[0087] And, FIG. 3b is an exploded perspective view of the second camera actuator in the second embodiment.

[0088] 3a and 3b, a second camera actuator 300 according to an embodiment may include a housing 310, a drive section 320 arranged on the housing 310, and a prism unit 330 arranged on the drive section 320.

[0089] Also, the second camera actuator 300 may further include a cover member 301. The cover member 301 includes an accommodation space therein, and at least one side surface is open. As an example, the cover member 301 may have a structure in which a plurality of interconnected sides are open. In detail, the cover member 301 may have a structure in which a front surface through which light is incident from the outside, a lower surface corresponding to the first camera actuator 100, and a rear surface opposite to the front surface are open, and may provide a light movement path for a prism unit 330 described below.

[0090] The cover member 301 may include a rigid material. For example, the cover member 301 may include a material such as resin, metal, etc., and may support the housing 310 disposed in the receiving space. For example, the cover member 301 may be disposed to surround the housing 310, the driving unit 320, the prism unit 330, etc., and may support the components.

[0091] In more detail, the prism unit 330, which will be described later, can be moved in a first direction and / or a second direction by the driving unit 320. At this time, the cover member 301 can fix the housing and the driving unit 320 at a set position, thereby providing a more accurate light movement path. In addition, the cover member 301 can stably support the prism unit 330 to the housing 310 by the support unit 360 and prevent the housing 310 from coming off outside the second camera actuator 300. The cover member 301 may be omitted depending on the arrangement relationship of the housing 310, the driving unit 320, and the prism unit 330.

[0092] 4 and 5 are perspective views of each component of the second camera actuator.

[0093] 4 and 5, the second camera actuator 300 may include the housing 310, the driving unit 320, the prism unit 330, a moving plate 350, and support units 360 and 360A. In detail, the driving unit 320 may include a driving unit circuit board 321, a plurality of coil units 323, and a plurality of magnets 325, and the prism unit 330 may include a prism 331 and the prism mover 333. In addition, the support unit 360 in the first embodiment may include a first pulling member 361 and a second pulling member 362, and the prism unit 330 is supported in a state in which it is pressed against the housing 310 by the attractive force of the first pulling member 361 and the second pulling member 362. Furthermore, the support portion 360A in the second embodiment includes at least two elastic members 361A, 362A, and the prism unit 330 is supported in a state in which it is pressed against the housing 310 by the elastic forces of the two elastic members 361A, 362A.

[0094] According to the embodiment, by providing the actuator 320 disposed on the housing 310, a technical effect is achieved that it is possible to provide an ultra-slim and ultra-compact camera actuator and a camera module including the same.

[0095] In addition, according to the embodiment, by disposing the driving unit 320 under the prism unit 330, there is a technical effect that the lens size limitation in the lens assembly of the optical system can be eliminated when implementing the OIS, thereby ensuring a sufficient amount of light.

[0096] In addition, according to the embodiment, by providing a driving unit 320 stably arranged on the housing 310 and controlling the tilt of the prism unit 330 to the first axis or the second axis, it is possible to minimize the occurrence of decentering and tilting phenomena when implementing the OIS, thereby achieving the technical effect of achieving the best optical characteristics.

[0097] In addition, according to the embodiment, unlike the conventional method of moving multiple solid lenses, the OIS is realized by tilting the prism unit 330 to the first axis or the second axis using the driving unit 320, thereby achieving the technical effect of realizing the OIS with low power consumption.

[0098] Hereinafter, each component of the second camera actuator 300 will be described in detail with reference to FIGS.

[0099] Meanwhile, the second camera actuator 300 can be divided into a first embodiment and a second embodiment. Here, the first embodiment and the second embodiment can be divided according to the support parts 360 and 360A. That is, the support part 360 in the first embodiment presses the prism unit 330 against the housing 310 using an attractive force generated by a first pulling part 361 and a second pulling part 362. And, the support part 360A in the second embodiment presses the prism unit 330 against the housing 310 using at least two elastic members 361A and 362A.

[0100] This will be explained in more detail below.

[0101] <Drive unit> FIG. 4a is a perspective view of the drive unit 320 of the second camera actuator 300, and FIG. 4b is an exploded perspective view of the drive unit 320 of the second camera actuator 300. As shown in FIG.

[0102] 4a and 4b, the actuator 320 may include an actuator circuit board 321, a coil unit 323, and a magnet 325.

[0103] The driving circuit board 321 may be connected to a power supply unit (not shown) to apply power to the coil unit 323. The driving circuit board 321 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).

[0104] The coil unit 323 is electrically connected to the driver circuit board 321. The coil unit 323 may include one or more coil units. For example, the coil unit 323 may include a first coil unit 323a, a second coil unit 323b, and a third coil unit 323c.

[0105] The first to third coil portions 323a, 323b, and 323c may be spaced apart from each other. For example, the driving circuit board 321 may have a U-shape, and the first coil portion 323a and the second coil portion 323b are disposed on first and second surfaces of the driving circuit board 321 that face each other, respectively. The third coil portion 323c is disposed on a third surface that connects the first and second surfaces of the driving circuit board 321.

[0106] The magnet 325 may include one or more magnets. For example, the magnet 325 may include a first magnet 325a, a second magnet 325b, and a third magnet 325c arranged in an area corresponding to the coil portion 323. In detail, the first magnet 325a is arranged on the first surface above an area corresponding to the first coil portion 323a. The second magnet 325b is arranged on the second surface above an area corresponding to the second coil portion 323b. The third magnet 325c is arranged on the third surface above an area corresponding to the third coil portion 323c.

[0107] The driving unit 320 may further include Hall sensors HS1 and HS2. For example, the Hall sensors HS1 and HS2 may include a first Hall sensor HS1 disposed adjacent to one of the first coil unit 323a and the second coil unit 323b, and a second Hall sensor HS2 disposed adjacent to the third coil unit 323c.

[0108] <Housing of the First Embodiment> 4c and 4d are perspective views of the housing 310 of the first embodiment of the second camera actuator 300. FIG.

[0109] 4c and 4d, the housing 310 may include an accommodation space for accommodating the prism unit 330. The housing 310 may include a plurality of inner surfaces. For example, the housing 310 may include a first inner surface 310S1 corresponding to a first surface of the driver circuit board 321, a second inner surface 310S2 corresponding to a second surface of the driver circuit board 321, and a third inner surface 310S3 corresponding to a third surface of the driver circuit board 321.

[0110] In detail, the housing 310 may include a first inner side surface 310S1 corresponding to the first coil portion 323a, a second inner side surface 310S2 corresponding to the second coil portion 323b, and a third inner side surface 310S3 corresponding to the third coil portion 323c.

[0111] In addition, the housing 310 may include a fourth inner side surface 310S4 connected to the first inner side surface 310S1 and the second inner side surface 310S2 and connected to the third inner side surface 310S3.

[0112] The housing 310 may include a plurality of housing holes 311H. The housing hole 311H may be a through hole penetrating an outer side surface and an inner side surface of the housing 310. The plurality of housing holes 311H may include first to third housing holes 311H1, 311H2, and 311H3. The first housing hole 311H1 may be a through hole penetrating the first inner side surface 310S1 and an outer side surface corresponding to the first inner side surface 310S1. The second housing hole 311H2 may be a through hole penetrating the second inner side surface 310S2 and an outer side surface corresponding to the second inner side surface 310S2. The third housing hole 311H3 may be a through hole penetrating the third inner side surface 310S3 and an outer side surface corresponding to the third inner side surface 310S3.

[0113] The first housing hole 311H1 is disposed in a region corresponding to the first coil portion 323a. Also, the first housing hole 311H1 may have a size and shape corresponding to the first coil portion 323a. Thus, the first coil portion 323a is disposed by being partially or entirely inserted into the first housing hole 311H1.

[0114] The second housing hole 311H2 is disposed in a region corresponding to the second coil portion 323b. Also, the second housing hole 311H2 may have a size and shape corresponding to the second coil portion 323b. Thus, the second coil portion 323b is disposed by being partially or entirely inserted into the second housing hole 311H2.

[0115] The third housing hole 311H3 is disposed in a region corresponding to the third coil portion 323c. Also, the third housing hole 311H3 may have a size and shape corresponding to the third coil portion 323c. Thus, the third coil portion 323c is disposed by being partially or entirely inserted into the third housing hole 311H3.

[0116] The housing 310 may include at least one recess. For example, a first recess 313R is disposed on at least one inner surface of the housing 310. In particular, the first recess 313R is disposed on a fourth inner surface 310S4 of the housing 310. The groove may be recessed in the direction of the outer surface of the housing 310 (z-axis direction) on the fourth inner surface 310S4.

[0117] The first recess 313R of the housing 310 may provide a space in which the moving plate 350 is disposed. Preferably, the recess 313R may provide a space in which a second moving protrusion (described below) disposed on a second surface of the moving plate 350 is disposed.

[0118] The first recesses 313R are spaced apart in a second direction (y-axis direction) based on the center of the inner side surface, that is, the first recesses 313R may include a first sub-first recess 313R1 spaced apart in the +y-axis direction based on the center of the inner side surface and a second sub-first recess 313R2 spaced apart in the -y-axis direction.

[0119] In addition, a second recess 315R is disposed on an outer side surface of the housing 310, which is opposite to the inner side surface where the first recess 313R is disposed. The second recess 315R may provide a space in which one component of the support part 360 is disposed. For example, a space in which a second spring member 362 is disposed may be provided within the second recess 315R.

[0120] At this time, the second recesses 315R are disposed at positions corresponding to the regions between the first recesses 313R, that is, the second recesses 315R are aligned in the z-axis direction from the central regions between the first recesses 313R.

[0121] <Prism unit of the first embodiment> 4e to 4g are diagrams showing the prism unit 330 of the second camera actuator 300 according to the first embodiment.

[0122] 4e to 4g, the prism unit 330 is disposed in the housing 310. In particular, the prism unit 330 is disposed in an accommodating space of the housing 310.

[0123] The prism unit 330 may include a prism 331 and a prism mover 333 disposed above the prism 331 .

[0124] The prism 331 may be a right-angle prism. The prism 331 can reflect the direction of light incident from the outside. That is, the prism 331 can change the path of light incident on the second camera actuator 300 from the outside to the direction of the first camera actuator 100.

[0125] The prism mover 333 is disposed on the prism 331. The prism mover 333 is disposed surrounding the prism 331. The prism mover 333 has at least one side open and can include an accommodation space therein. In particular, the prism mover 333 may have a structure in which a plurality of interconnected outer sides are open. As an example, the prism mover 333 may have a structure in which an outer side corresponding to the prism 331 is open and can include an accommodation space defined as a first space 335 therein.

[0126] The prism mover 333 may include an inner surface 335S. The inner surface 335S may be an inner surface that defines the first space 335. The first space 335 may have a shape corresponding to the prism 331. The inner surface 335S of the first space 335 may be in direct contact with the prism 331.

[0127] The prism mover 333 may include a stepped portion 326. The stepped portion 326 is disposed within the first space 335. The stepped portion 326 may function as a guide and / or a seating portion for the prism 331. More specifically, a protrusion corresponding to the stepped portion 326 is formed on the outer side of the prism 331. The prism 331 is disposed within the first space 335 with the protrusion guided by the stepped portion 326 of the prism mover 333. Thus, the prism mover 333 may effectively support the prism 331. In addition, the prism 331 may be seated at a set position and have improved alignment characteristics within the prism mover 333.

[0128] The prism unit 330 may include a plurality of outer surfaces. For example, the prism mover 333 of the prism unit 330 may include a plurality of outer surfaces. The prism mover 333 may include a first outer surface 330S1 corresponding to the first inner surface 310S1 of the housing 310, a second outer surface 330S2 corresponding to the second inner surface 310S2, a third outer surface 330S3 corresponding to the third inner surface 310S3, and a fourth outer surface 330S4 corresponding to the fourth inner surface 310S4.

[0129] The prism mover 333 may include a number of recesses.

[0130] Preferably, the prism mover 333 may include a fourth recess 338R and a fifth recess 339R, that is, the fourth recess 338R is disposed in the area between the fifth recess 339R.

[0131] The fourth recess 338R is disposed in a central region of the fourth outer side 330S4. In particular, the fourth recess 338R may overlap with the center of the fourth outer side 330S4 in the z-axis direction. The fourth recess 338R is disposed opposite the recess 315R of the housing 310. Preferably, the third recess 338R is disposed in a region overlapping with the center of the recess 315R of the housing 310 in the z-axis direction. The fourth recess 338R may provide a space in which one component of the support part 360 is disposed. Preferably, a first pulling member 361, which is one component of the support part 360, is disposed in the fourth recess 338R. The first pulling member 361 may be a magnet, or may be a yoke instead. In this case, when the first pulling member 361 is a magnet, the second pulling member 362 may be a yoke. Also, when the first pulling member 361 is a yoke, the second pulling member 362 may be a magnet.

[0132] Thus, the fourth recess 338R is disposed opposite to the second recess 315R disposed in the housing 310. That is, the third recess 338R can overlap with the second recess 315R of the housing 310 in the z-axis direction.

[0133] At this time, an adhesive member (not shown) is applied to the fourth recess 338R, and the first pulling member 361 is fixed and disposed in the fourth recess 338R by the adhesive member.

[0134] A plurality of the fifth recesses 339R are disposed on the fourth outer side surface 330S4. The fifth recesses 339R may be provided to have the same size as or different from the fourth recess 338R. The plurality of fifth recesses 339R are disposed adjacent to the fourth recess 338R and spaced apart from the fourth recess 338R. Preferably, the fifth recess 339R is disposed spaced apart from the fourth recess 338R. In this case, the depth of the fourth recess 338R may be different from the depth of the fifth recess 319R. Also, the depths of the plurality of fifth recesses 319R may be the same.

[0135] The fifth recess 319R is disposed in the first direction and spaced apart from the fourth recess 338R. For example, the plurality of fifth recesses 339R may include a first sub-fifth recess 339R1 and a second sub-fifth recess 339R2 spaced apart from the fourth recess 338R in the first direction (x-axis direction).

[0136] The fifth recess 319R may provide a space into which a first moving protrusion of the moving plate 350 disposed on one surface of the moving plate 350 is inserted. In this case, the fourth recess 319R may be disposed at a different position in the z-axis direction from the first recess 313R of the housing.

[0137] The prism mover 333 may further include a plurality of recesses. The recesses may be grooves having a shape recessed toward the first space 335 on the outer surface of the prism mover 333. The plurality of recesses may include a first recess 337R1, a second recess 337R2, and a third recess 337R3. For example, the first recess 337R1 is disposed on the first outer surface 330S1. The first recess 337R1 is disposed in a region corresponding to the first housing hole 311H1. The second recess 337R2 is disposed on the second outer surface 330S2. The second recess 337R2 is disposed in a region corresponding to the second housing hole 311H2. The third recess 337R3 is disposed on the third outer surface 330S3. The third recess 337R3 is disposed in a region corresponding to the third housing hole 311H3. That is, the first housing hole 311H1 may correspond to the first coil portion 323a, the second housing hole 311H2 may correspond to the second coil portion 323b, and the third housing hole 311H3 may correspond to the third coil portion 323c.

[0138] The magnets 325 are disposed in the first to third recesses 337R1, 337R2, and 337R3. For example, the first magnet 325a is disposed in the first recess 337R1, the second magnet 325b is disposed in the second recess 337R2, and the third magnet 325c is disposed in the third recess 337R3. They may be spaced apart from each other.

[0139] As described above, the prism mover 333 may include a fourth recess 338R in which the first pulling member 361 is disposed on an outer surface thereof, and a plurality of fifth recesses 339R spaced apart from the fourth recess 338R in the x-axis direction.

[0140] <Moving plate> FIG. 5a is a front perspective view of a moving plate that constitutes the second camera actuator, and FIG. 5b is a rear perspective view of the moving plate that constitutes the second camera actuator.

[0141] 5a and 5b, the moving plate 350 can include a first surface 351S1 and a second surface 352S1.

[0142] One surface of the moving plate 350 is provided with a plurality of moving protrusions providing a rotation axis for rotating or tilting the prism unit 330 in a second direction (e.g., up-down or y-axis direction). The other surface of the moving plate 350 is provided with a plurality of moving protrusions providing a rotation axis for rotating or tilting the prism unit 330 in a first direction (e.g., left-right or x-axis direction). Meanwhile, in the drawings, the ends of the moving protrusions disposed on the first surface 351S1 and the second surface 352S1 of the moving plate 350 are illustrated as having a round semicircular shape, but the present invention is not limited thereto. That is, the ends of the moving protrusions disposed on the first surface 351S1 and the second surface 352S1 of the moving plate 350 may have a pointed triangular pyramid shape as well as a round surface.

[0143] As described above, in the embodiment, the rotation of the prism unit 330 in the first direction is performed by a plurality of moving protrusions arranged on the other side of the moving plate 350, and the rotation in the second direction is performed by a plurality of moving protrusions arranged on one side of the moving plate 350.

[0144] At this time, the moving plate 350 is disposed between the housing 310 and the prism unit 330 .

[0145] The moving plate 350 is disposed between the housing 310 and the prism unit 330 , and is pressed by the support portion 360 to be supported by and pressed against the housing 310 together with the prism unit 330 .

[0146] Here, the moving plate 350 includes a plurality of moving protrusions on both sides.

[0147] At this time, the moving plate 350 can provide a rotation axis for the moving direction of the prism unit 330 which is moved by an external driving force, for example, the coil part 323 and the magnet 325 .

[0148] The moving plate 350 can include a first surface 351S1.

[0149] The first surface 351S1 may be a surface facing a fourth outer surface 330S4 of the prism unit 330.

[0150] A first moving protrusion 351P1 and a first recess 351P2 are disposed on a first surface 351S1 of the moving plate 350. The first moving protrusion 351P1 functions as a rotation axis for rotating the prism unit 330 in a second direction. The first recess 351P2 may be a concave groove formed on the first surface 351S1 by forming a second moving protrusion 352P1 on the second surface 352S1 of the moving plate 350.

[0151] That is, the moving plate 350 may be a flat plate-like member, and first and second moving protrusions 351P1, 352P1 are formed on both sides thereof. Then, by forming the first and second moving protrusions 351P1, 352P1, corresponding first and second recesses 351P2, 352P2 are formed on the opposite side.

[0152] The first moving protrusion 351P1 is disposed apart in the first direction (x-axis direction) based on the central region of the first surface 351S1 of the moving plate 350. Here, the central region of the first surface 351S1 may be an area facing a first pulling member 361 fixedly disposed on the prism unit 330. Preferably, the central region of the first surface 351S1 may be an area overlapping with the first pulling member 361 fixedly disposed on the prism unit 330 in the z-axis direction.

[0153] The first moving protrusion 351P1 is disposed in an x-axis direction of the central region, i.e., the first moving protrusion 351P1 may include a first sub-first moving protrusion 351Pa disposed in a -x-axis direction with respect to the central region and a second sub-first moving protrusion 351Pb disposed in a +x-axis direction with respect to the central region.

[0154] The first sub-first moving protrusion 351Pa may correspond to the first sub-fifth recess 339R1. That is, at least a portion of the first sub-first moving protrusion 351Pa is disposed in the first sub-fifth recess 339R1. That is, at least a portion of the first sub-first moving protrusion 351Pa is inserted into the first sub-fifth recess 339R1. At this time, the height of the first sub-first moving protrusion 351Pa may be greater than the depth of the first sub-fifth recess 319R1. Thus, only a portion of the first sub-first moving protrusion 351Pa is inserted into the first sub-fifth recess 339R1. As a result, when at least a portion of the first sub-first moving protrusion 351Pa is inserted into the first sub-fifth recess 319R1, the first surface 351S1 of the moving plate 350 can be spaced a certain distance from the fourth outer surface 330S4 of the prism mover 333.

[0155] The second sub-first moving protrusion 351Pb may correspond to the second sub-fifth recess 339R2. That is, at least a portion of the second sub-first moving protrusion 351Pb is disposed in the second sub-fifth recess 339R2. That is, at least a portion of the second sub-first moving protrusion 351Pb is inserted into the second sub-fifth recess 339R2. At this time, the height of the second sub-first moving protrusion 351Pb may be greater than the depth of the second sub-fifth recess 339R2. Thus, only a portion of the second sub-first moving protrusion 351Pb is inserted into the second sub-fifth recess 339R2. As a result, when at least a portion of the second sub-first moving protrusion 351Pb is inserted into the second sub-fifth recess 339R2, the first surface 351S1 of the moving plate 350 can be spaced a certain distance from the fourth outer surface 330S4 of the prism mover 333.

[0156] The first sub-first moving protrusion 351Pa and the second sub-first moving protrusion 351Pb are arranged in the x-axis direction with reference to the center of the moving plate 350, thereby providing a rotation axis for the prism unit 330 to rotate in the second direction. That is, the prism unit 330 is provided to be capable of rotational movement in the second direction (up and down direction) with reference to a virtual first line formed by the first sub-first moving protrusion 351Pa and the second sub-first moving protrusion 351Pb.

[0157] The first recess 351P2 is disposed in a second direction (y-axis direction) with respect to a central region of the first surface 351S1 of the moving plate 350. Here, the central region of the first surface 351S1 may be an area facing a first pulling member 361 fixed to the prism unit 330. Preferably, the central region of the first surface 351S1 may be an area overlapping with the first pulling member 361 fixed to the prism unit 330 in the z-axis direction.

[0158] The first recesses 351P2 are spaced apart from each other in the y-axis direction of the central region, that is, the first recesses 351P2 may include a first sub-first recess 351Pc spaced apart from the central region in the +y-axis direction and a second sub-first recess 351Pd spaced apart from the central region in the -y-axis direction.

[0159] The first sub-first recess 351Pc and the second sub-first recess 351Pd may correspond to a second moving protrusion 351P1 formed on a second surface 352S1 of the moving plate 350.

[0160] The moving plate 350 can also include a second surface 352S1.

[0161] The second surface 352S1 may be a surface facing a fourth inner surface 310S4 of the housing 310.

[0162] A second moving protrusion 352P1 and a second recess 352P2 are disposed on a second surface 352S1 of the moving plate 350. The second moving protrusion 352P1 functions as a rotation axis for rotating the prism unit 330 in a first direction.

[0163] The second moving protrusion 352P1 is disposed in a second direction (y-axis direction) with respect to a central area of ​​the second surface 352S1 of the moving plate 350. Here, the central area of ​​the second surface 352S1 may be an area facing a first pulling member 361 fixed to the prism unit 330 or a second pulling member 362 fixed to the housing 310. Preferably, the central area of ​​the second surface 352S1 may be an area overlapping with the first pulling member 361 fixed to the prism unit 330 in the z-axis direction.

[0164] The second moving protrusion 352P1 is disposed to be spaced apart in the x-axis direction of the central region. That is, the second moving protrusion 352P1 may include a first sub-second moving protrusion 352Pa disposed to be spaced apart in the +y-axis direction with respect to the central region and a second sub-second moving protrusion 352Pb disposed to be spaced apart in the -y-axis direction with respect to the central region.

[0165] The first sub-second moving protrusion 352Pa and the second sub-second moving protrusion 352Pb may correspond to the first sub-first recess 313R1 and the second sub-first recess 313R2 of the housing 310.

[0166] That is, the first sub-second moving protrusion 352Pa and the second sub-second moving protrusion 352Pb are inserted into the first sub-first recess 313R1 and the second sub-first recess 313R2.

[0167] The first sub-second moving protrusion 352Pa and the second sub-second moving protrusion 352Pb are arranged in the y-axis direction with reference to the center of the moving plate 350, thereby providing a rotation axis for the prism unit 330 to rotate in the first direction. That is, the prism unit 330 is provided to be capable of rotation in the first direction (left-right direction) with reference to a virtual second line formed by the first sub-second moving protrusion 352Pa and the second sub-second moving protrusion 352Pb.

[0168] The second recess 352P2 is disposed in a first direction (x-axis direction) with a distance from a central region of the second surface 352S1 of the moving plate 350. Here, the central region of the second surface 352S1 may be an area facing a first pulling member 361 fixed to the prism unit 330. Preferably, the central region of the second surface 352S1 may be an area overlapping with the first pulling member 361 fixed to the prism unit 330 in the z-axis direction.

[0169] The second recesses 352P2 are spaced apart from each other in the x-axis direction of the central region, that is, the second recesses 352P2 may include a first sub-second recess 352Pc spaced apart from the central region in the -x-axis direction and a second sub-second recess 352Pd spaced apart from the central region in the +x-axis direction.

[0170] 6a and 6b are diagrams showing the coupling relationship between the housing, the prism unit, the support part 360 and the moving plate in the second camera actuator.

[0171] 6a and 6b, the second camera actuator according to the embodiment may include a moving plate 350. A support part 360 for generating a mutual attractive force is disposed between the housing 310 and the prism unit 330 on their mutually facing surfaces. That is, a first pulling member 361 is disposed on one surface of the prism unit 330 (more specifically, a prism mover). A second pulling member 362 is disposed on one surface of the housing 310 facing the one surface of the prism unit 330. At this time, the first pulling member 361 may be a magnet, or may be a yoke instead. At this time, when the first pulling member 361 is a magnet, the second pulling member 362 may be a yoke. When the first pulling member 361 is a yoke, the second pulling member 362 may be a magnet.

[0172] Meanwhile, the first pulling member 361 may be a magnet, and the second pulling member 362 may be a yoke. In this case, the horizontal width of the yoke may be greater than the horizontal width of the magnet. In this way, the first pulling member 361 and the second pulling member 362 can provide a restoring force to return the prism unit 330 to its initial position (the center position before tilting up, down, left, or right).

[0173] The prism unit 330 is pressed against the housing 310 by the support portion 360 with the moving plate 350 inserted between the prism unit 330 and the housing 310. Thus, the prism unit 330 and the moving plate 350 are supported by the housing 310.

[0174] The centers of the first pulling member 361, the moving plate 350 and the second pulling member 362 may overlap each other in the z-axis direction.

[0175] At this time, the first moving protrusion 351P1 of the moving plate 350 is inserted into the fifth recess 339R of the prism unit 330.

[0176] The first sub-first moving protrusion 351Pa is inserted into the first sub-fifth recess 339R1, and the second sub-first moving protrusion 351Pb is inserted into the second sub-fifth recess 339R2.

[0177] The first sub-second moving protrusion 352Pa and the second sub-second moving protrusion 352Pb are inserted into the first sub-first recess 313R1 and the second sub-first recess 313R2 of the housing 310.

[0178] The first sub-second moving protrusion 352Pa and the second sub-second moving protrusion 352Pb are arranged in the y-axis direction with reference to the center of the moving plate 350, thereby providing a rotation axis for the prism unit 330 to rotate in the first direction. That is, the prism unit 330 is provided to be capable of rotation in the first direction (left-right direction) with reference to a virtual second line formed by the first sub-second moving protrusion 352Pa and the second sub-second moving protrusion 352Pb.

[0179] As a result, a first moving protrusion arranged on one side of the moving plate 350 serves as a rotation axis for rotating the prism unit 330 in a second direction corresponding to the y-axis, and a second moving protrusion arranged on the other side of the moving plate 350 serves as a rotation axis for rotating the prism unit 330 in a first direction corresponding to the x-axis.

[0180] In addition, the embodiment has a technical effect of minimizing the occurrence of decentering and tilting phenomena when implementing an OIS by controlling tilting of the prism unit 330 to the first axis or the second axis using electromagnetic forces between the first to third magnets 325a, 325b, and 325c arranged on the prism mover 333 and the first to third coil portions 323a, 323b, and 323c, thereby achieving the best optical characteristics.

[0181] For example, in the embodiment, with a moving plate 350 disposed between the housing 310 and the prism unit 330, the prism unit 330 is tilted to a first axis or a second axis by a driving force of the driving unit 320, thereby minimizing the occurrence of decentering and tilting phenomena when implementing an OIS, thereby achieving optimal optical characteristics and achieving a technical effect of implementing an ultra-slim and ultra-compact camera actuator.

[0182] Meanwhile, the second pulling member 362 is fixedly disposed on the housing 310 as described above. However, the embodiment is not limited thereto, and the position of the second pulling member 362 can be changed as long as the second pulling member 362 overlaps with the first pulling member 361 in the z-axis direction.

[0183] 7a and 7b are diagrams showing modified examples of the arrangement position of the second pulling member according to the embodiment.

[0184] 3 to 6, the second pulling member 362 is disposed in the housing 310. Preferably, the second pulling member 362 is fixedly disposed in a second recess 315R of the housing 310.

[0185] Alternatively, referring to FIG. 7 a , the second pulling member 362 is disposed on the cover member 301 .

[0186] That is, the second pulling member 362 may be attached to the cover member 301 .

[0187] That is, the second pulling member 362 is fixedly disposed on the inner surface of the cover member 301 overlapping with the first pulling member 361 in the z-axis direction.

[0188] Also, referring to FIG. 7 b , the second pulling member 362 is disposed on the driving circuit board 321 instead of the housing 310 and the cover member 301 .

[0189] Referring again to Fig. 4b, the driver circuit board 321 has a U-shape. In this case, the driver circuit board 321 may have a shape in which the front, rear and top are open.

[0190] Alternatively, the driver circuit board 321 may further include a region corresponding to the rear surface, that is, a board region disposed between the housing 310 and the cover member 301 .

[0191] The region is disposed between the housing 310 and the cover member 301 .

[0192] Then, the second pulling member 362 is attached to the substrate region.

[0193] In conclusion, the second pulling member 362 may be disposed at various positions depending on the embodiment. As an example, the second pulling member 362 may be disposed on an inner surface of the housing 310 facing the prism unit. Alternatively, the second pulling member 362 may be disposed on an outer surface of the housing 310. The second pulling member 362 may be exposed through an opening of the housing 310 and disposed on an inner surface of the cover member 301. The second pulling member 362 may also be disposed on the driving circuit board 321 surrounding the outer surface of the housing 310.

[0194] FIG. 8 is an exploded perspective view of the second camera actuator according to the second embodiment.

[0195] Referring to FIG. 8, the second camera actuator according to the second embodiment may include a housing 310 , a drive section 320 disposed on the housing 310 , and a prism unit 330 disposed on the drive section 320 .

[0196] In addition, the second camera actuator 300 may further include a cover member 301 .

[0197] In addition, the second camera actuator 300 may further include a support part 360A.

[0198] At this time, the support portion 360A in the second embodiment includes at least two elastic members 361A and 362A, and the prism unit 330 is supported in a state in which it is pressed against the housing 310 by the elastic forces of the two elastic members 361A and 362A.

[0199] That is, the support portion 360 in the first embodiment is configured to support the prism unit 330 in a state in which the prism unit 330 is pressed against the housing 310 by the attractive force generated by the first and second pulling members 361 and 362 .

[0200] Differently from this, the support portion 360A in the second embodiment supports the prism unit 330 in a state in which it is pressed against the housing 310 by the elastic forces of the elastic members 361A and 362A.

[0201] For this purpose, the housing 310 and the prism mover 333 in the first embodiment include recesses into which the first and second pulling members 361 and 362 are inserted and seated. Alternatively, the housing 310 and the prism mover 333 in the second embodiment may include recesses into which the elastic members 361A and 362A are inserted and fixed.

[0202] That is, the difference between the first and second embodiments is the method of pressing the prism unit 330 against the housing 310.

[0203] <Housing of the Second Example> FIG. 9a is a perspective view of a housing 310 of a second embodiment of a second camera actuator 300, and FIG. 9b is a combined view of an elastic member of a support portion combined with the housing of FIG. 9a.

[0204] 9a and 9b, the housing 310 may include an accommodation space for accommodating the prism unit 330. The housing 310 may include a plurality of inner surfaces. For example, the housing 310 may include a first inner surface 310S1 corresponding to a first surface of the driver circuit board 321, a second inner surface 310S2 corresponding to a second surface of the driver circuit board 321, and a third inner surface 310S3 corresponding to a third surface of the driver circuit board 321.

[0205] In detail, the housing 310 may include a first inner side surface 310S1 corresponding to the first coil portion 323a, a second inner side surface 310S2 corresponding to the second coil portion 323b, and a third inner side surface 310S3 corresponding to the third coil portion 323c.

[0206] The housing 310 may include at least one recess. For example, a first recess 313R is disposed on at least one inner surface of the housing 310. In particular, the first recess 313R is disposed on a fourth inner surface 310S4 of the housing 310. The groove may be recessed in the direction of the outer surface of the housing 310 (z-axis direction) on the fourth inner surface 310S4.

[0207] The first recess 313R of the housing 310 may provide a space in which the moving plate 350 is disposed. Preferably, the recess 313R may provide a space in which a second moving protrusion (described below) disposed on a second surface of the moving plate 350 is disposed.

[0208] The first recesses 313R are spaced apart in a second direction (y-axis direction) based on the center of the inner side surface, that is, the first recesses 313R may include a first sub-first recess 313R1 spaced apart in the +y-axis direction based on the center of the inner side surface and a second sub-first recess 313R2 spaced apart in the -y-axis direction.

[0209] Additionally, the housing 310 may further include a second recess 317R.

[0210] The second recess 317R may provide a space in which the support portion 360A is disposed. The second recess 317R may include a plurality of sub-second recesses spaced apart in a first direction around a central region of the fourth inner side surface 310S4 of the housing 310. Preferably, the second recess 317R is disposed outside the first recesses 313R, not in a region between the first recesses 313R.

[0211] Thus, an imaginary line connecting the first recesses 313R of the housing 310 can be perpendicular to an imaginary line connecting the second recesses 317R.

[0212] That is, the second recess 317R may include a first sub-second recess 317R1 spaced apart from the central region in the -x-axis direction and a second sub-second recess 317R2 spaced apart from the central region in the +x-axis direction. The first sub-second recess 317R1 is disposed adjacent to a second inner side 310S2 of the housing 310. Also, the second sub-second recess 317R2 is disposed adjacent to a third inner side 310S3 of the housing 310.

[0213] Meanwhile, the support portion 360A may include a first elastic member 361A and a second elastic member 362A.

[0214] The first elastic member 361A and the second elastic member 362A of the support portion 360A are coupled to the housing 310.

[0215] For example, one end of the first elastic member 361A is fixedly disposed within the first sub-second recess 317R1, and one end of the second elastic member 362A is fixedly disposed within the second sub-second recess 317R2.

[0216] <Prism unit according to the second embodiment> Figure 9c is a perspective view of the prism unit 330 of the second embodiment of the second camera actuator 300, Figure 9d is an assembly diagram of the elastic member of the support part being assembled to the prism unit 330 of Figure 9b, and Figure 9e is an assembly diagram of the support part, the prism unit and the housing.

[0217] 9c to 9e, the prism unit 330 is disposed in the housing 310. In particular, the prism unit 330 is disposed in an accommodating space of the housing 310.

[0218] The prism unit 330 may include a prism 331 and a prism mover 333 disposed above the prism 331 .

[0219] The prism unit 330 may include a plurality of outer surfaces. For example, the prism mover 333 of the prism unit 330 may include a plurality of outer surfaces. The prism mover 333 may include a first outer surface 330S1 corresponding to the first inner surface 310S1 of the housing 310, a second outer surface 330S2 corresponding to the second inner surface 310S2, a third outer surface 330S3 corresponding to the third inner surface 310S3, and a fourth outer surface 330S4 corresponding to the fourth inner surface 310S4.

[0220] The prism mover 333 may include a number of recesses.

[0221] Preferably, the prism mover 333 may include a fourth recess 338RA and a fifth recess 339R. In this case, a virtual line connecting the fourth recesses 338RA may be parallel to a virtual line connecting the fifth recesses 339R. Also, the fourth recess 338RA is disposed outside the region between the fifth recesses 339R, not in the region between the fifth recesses 339R.

[0222] The fifth recesses 339R are arranged on the fourth outer side surface 330S4 in a plurality of portions. The fifth recesses 339R are arranged at intervals in the first direction around the central region of the fourth outer side surface 330S4. For example, the plurality of fifth recesses 339R may include a first sub-fifth recess 339R1 and a second sub-fifth recess 339R2 spaced apart in a first direction (x-axis direction) based on a central region of the fourth outer side surface 330S4.

[0223] The fifth recess 319R may provide a space into which a first moving protrusion of the moving plate 350 disposed on one surface of the moving plate 350 is inserted. In this case, the fourth recess 319R may be disposed at a different position in the z-axis direction from the first recess 313R of the housing.

[0224] Also, a fourth recess 338RA is disposed on a virtual first line connecting the first sub-fifth recess 339R1 and the second sub-fifth recess 339R2. The fourth recess 338RA may provide a space in which the first elastic member 361A and the second elastic member 362A are disposed. That is, the fourth recess 338RA may include a first sub-fourth recess 338R1 disposed adjacent to the first sub-fifth recess 339R1 and a second sub-fourth recess 338R2 disposed adjacent to the second sub-fifth recess 339R2.

[0225] The first sub-fourth recess 338R1 of the prism mover 333 may correspond to the first sub-second recess 317R1 of the housing 310. That is, the first sub-fourth recess 338R1 is disposed opposite to the first sub-second recess 317R1 of the housing 310 in the z-axis direction.

[0226] Also, the second sub-fourth recess 338R2 of the prism mover 333 may correspond to the second sub-second recess 317R2 of the housing 310. That is, the second sub-fourth recess 338R2 is disposed to face the second sub-second recess 317R2 of the housing 310 in the z-axis direction.

[0227] At this time, one end of the first elastic member 361A, the other end of which is inserted into the first sub-second recess 317R1 of the housing 310, is fixed and disposed within the first sub-fourth recess 338R1 of the prism mover 333.

[0228] In addition, one end of the second elastic member 362A, the other end of which is inserted into the second sub-second recess 317R2 of the housing 310, is fixed and disposed within the second sub-fourth recess 338R2 of the prism mover 333.

[0229] That is, the first elastic member 361A and the second elastic member 362A are coupled at one end to the prism mover 333 and the housing 310, respectively.

[0230] That is, the prism unit 330 is pressed and supported by the housing 310 by the elastic force of the first elastic member 361A and the second elastic member 362A. At this time, a moving plate 350 is disposed between the prism unit 330 and the housing 310. The moving plate 350 is disposed between the prism unit 330 and the housing 310 in the following manner.

[0231] First, the first elastic member 361A and the second elastic member 362A are coupled to the housing 310 and the prism unit 330, respectively.

[0232] The prism unit 330 can be pulled in the z-axis direction opposite to the housing 310, and the moving plate 350 can be inserted into the space between the prism unit 330 and the housing 310. After the moving plate 350 is inserted, the moving plate 350 is supported by the housing 310 with the moving protrusions inserted into the recesses of the housing 310 and the prism unit 330 by the elastic restoring force of the first elastic member 361A and the second elastic member 362A.

[0233] 10a and 10b are diagrams illustrating the operation of the second camera actuator according to the embodiment.

[0234] Referring to FIG. 10, the prism unit 330 according to the embodiment can be tilted along a first axis or a second axis by the driving force of the driving part 320.

[0235] 10a, the prism unit 330 is provided to be capable of rotating in a second direction with respect to a reference axis of a virtual first line L1 formed by a first moving protrusion 351P1 of the moving plate 350. In particular, the driving part 320 can rotate the prism unit 330 in a vertical direction.

[0236] For example, a repulsive force is generated between the 3-1 coil portion of the third coil portion 323c adjacent to the moving plate 350 and the 3-1 magnet of the third magnet 325c adjacent to the moving plate 350. Also, an attractive force is generated between the 3-2 coil portion of the third coil portion 323c remote from the moving plate 350 and the 3-2 magnet of the third magnet 325c remote from the moving plate 350.

[0237] Therefore, the prism unit 330 can be tilted downward with the first line L1 as a reference axis. That is, the prism unit 330 can be tilted up and down by a predetermined angle with the first line L1 as a reference. Thus, the travel path of the light incident on the prism unit 330 can be controlled.

[0238] 10b, the prism unit 330 is provided to be capable of rotating in a first direction with respect to a reference axis of a virtual second line L2 formed by the second moving protrusion 352P1 of the moving plate 350. In particular, the driving part 320 can rotate the prism unit 330 in a left-right direction.

[0239] For example, a repulsive force is generated between the 1-1 coil part of the first coil part 323a adjacent to the moving plate 350 and the 1-1 magnet of the first magnet 325a adjacent to the moving plate 350. Also, an attractive force is generated between the 1-2 coil part of the first coil part 323a distant from the moving plate 350 and the 1-2 magnet of the first magnet 325a distant from the moving plate 350. Also, an attractive force is generated between the 2-1 coil part of the second coil part 323b adjacent to the moving plate 350 and the 2-1 magnet of the second magnet 325b adjacent to the moving plate 350. Also, a repulsive force is generated between the 2-2 coil part of the second coil part 323b distant from the moving plate 350 and the 2-2 magnet of the second magnet 325b distant from the moving plate 350.

[0240] As a result, the prism unit 330 can be tilted left and right with the second line L2 as a reference axis. That is, the prism unit 330 can be tilted left and right by a predetermined angle with the second line L2 as a reference. As a result, the travel path of the light incident on the prism unit 330 can be controlled.

[0241] FIG. 11 is an exploded perspective view of the second camera actuator according to the third embodiment.

[0242] Referring to FIG. 11, the second camera actuator according to the third embodiment is configured with a plurality of moving plates compared to the first embodiment. At this time, the plurality of moving plates are formed with moving protrusions that provide different rotation axes. That is, in the first embodiment, the moving protrusions for the first axis and the second axis are all formed on one moving plate, but in the third embodiment, a first moving plate with a moving protrusion for the first axis and a second moving plate with a moving protrusion for the second axis may be included. Also, in the first embodiment, the support part includes a plurality of spring members, and in the second embodiment, the support part includes a plurality of elastic members. Differently from this, in the third embodiment, one of the plurality of moving plates can be used as the support part. This will be described in detail.

[0243] The second camera actuator 300 according to the third embodiment may include a housing 310, a driving part 320 disposed on the housing 310, and a prism unit 330 disposed on the driving part 320. Meanwhile, in the following description of the second camera actuator of the third embodiment, only the differences from the first and second embodiments will be described.

[0244] In addition, in the drawings showing the configuration of the third embodiment, the same reference numerals are used for the parts that are substantially the same as those in the first and second embodiments.

[0245] The second camera actuator 300 may include the housing 310 , the driving part 320 , the prism unit 330 , a moving plate 350 , and a pulling magnet 360 .

[0246] Meanwhile, the driving unit 320 in the third embodiment has substantially the same structure as the driving unit in the first embodiment, so a detailed description thereof will be omitted.

[0247] <Housing of the Third Embodiment> FIG. 12a is a perspective view of a housing of a second camera actuator of the third embodiment, and FIG. 12b is a perspective view of a second moving plate coupled to the housing of FIG. 12a.

[0248] 12a and 12b, the housing 310 may include at least one recess 313R. For example, the recess 313R is disposed on at least one inner surface of the housing 310. In particular, the recess 313R is disposed on a fourth inner surface 310S4 of the housing 310. The groove may have a recessed shape in the outer surface direction (z-axis direction) of the housing 310 on the fourth inner surface 310S4.

[0249] The recess 313R of the housing 310 may provide a space in which the moving plate 350 is disposed. Preferably, the recess 313R may provide a space in which the second moving plate 352 of the moving plate 350 is disposed. To this end, an adhesive member (not shown) is disposed in the recess 313R. The second moving plate 352 is fixed and disposed in the recess 313R of the housing 310 by the adhesive member. In the embodiment, the second moving plate 352 disposed in the recess 313R may also be used as a support part that pressurizes and supports the prism unit against the housing.

[0250] <Prism unit of the third embodiment> 13a to 13c are diagrams showing the prism unit of the second camera actuator of the third embodiment.

[0251] 13a to 13c, the recesses 338R and 339R of the prism mover 333 are configured in a plurality of pieces. The recesses 338R and 339R may include a third recess 338R and a fourth recess 339R.

[0252] The third recess 338R is disposed in a central region of the fourth outer side 330S4. In particular, the third recess 338R may overlap with the center of the fourth outer side 330S4 in the z-axis direction. The third recess 338R is disposed opposite the recess 313R of the housing 310. Preferably, the third recess 338R is disposed in a region overlapping with the center of the recess 313R of the housing 310 in the z-axis direction. The third recess 338R may provide a space in which the pulling magnet 360 is disposed. Preferably, the pulling magnet 360 is inserted into the third recess 338R. At this time, an adhesive member (not shown) is applied to the third recess 338R. The pulling magnet 360 is fixed and disposed in the third recess 338R by the adhesive member.

[0253] A plurality of the fourth recesses 339R are disposed on the fourth outer side surface 330S4. The fourth recesses 339R may be provided to have the same size as or different from the third recesses 338R. The plurality of fourth recesses 339R are disposed adjacent to the third recesses 338R, and may be selectively disposed apart from the fourth recesses 339R. That is, a part of the fourth recesses 339R may be disposed apart from the third recesses 338R. And, the remaining part of the fourth recesses 339R may be disposed connected to the third recesses 338R. In this case, the depth of the third recesses 338R may be different from the depth of the fourth recesses 339R. Also, each of the plurality of fourth recesses 339R may have a different depth.

[0254] The fourth recess 339R is disposed around the third recess 338R. That is, the fourth recess 339R is disposed so as to surround the periphery of the recess 338R with the third recess 338R as the center.

[0255] For example, the plurality of fourth recesses 339R may include a first sub-fourth recess 339R1 and a second sub-fourth recess 339R2 spaced apart from the third recess 338R in a first direction (x-axis direction), and a third sub-fourth recess 339R3 and a fourth sub-fourth recess 339R4 spaced apart from or connected to the third recess 338R in a second direction (y-axis direction).

[0256] The fourth recess 339R may provide a space into which the first moving plate 351 of the moving plate 350 is inserted. Preferably, a plurality of protrusions (described below) of the first moving plate 351 are inserted into the fourth recess 339R.

[0257] That is, the fourth recess 339R is formed to correspond to the positions of a plurality of protrusions disposed on the first moving plate 351, and can provide a space in which the plurality of protrusions of the first moving plate 351 are disposed.

[0258] In this case, the depths of the fourth recesses 339R may be different. Preferably, the depths of the first sub-fourth recess 339R1 and the second sub-fourth recess 339R2 may be the same. That is, the depths of the first sub-fourth recess 339R1 and the second sub-fourth recess 339R2 may have a depth corresponding to the height of a plurality of first protrusions (described later) of the first moving plate 351.

[0259] The third sub-fourth recess 339R3 and the fourth sub-fourth recess 339R4 may have the same depth. Preferably, the depth of the third sub-fourth recess 339R3 and the fourth sub-fourth recess 339R4 may have a depth corresponding to the height of a plurality of second protrusions (described later) of the first moving plate 351.

[0260] Meanwhile, the depths of the first sub-fourth recess 339R1 and the second sub-fourth recess 339R2 into which the first protrusion is inserted may be different from the depths of the third sub-fourth recess 339R3 and the fourth sub-fourth recess 339R4 into which the second protrusion is inserted. In this case, the height of the first protrusion of the first moving plate 351 may be greater than the height of the second protrusion. Thus, the depths of the first sub-fourth recess 339R1 and the second sub-fourth recess 339R2 may be greater than the depths of the third sub-fourth recess 339R3 and the fourth sub-fourth recess 339R4.

[0261] <Moving plate of the third embodiment> FIG. 14a is a front perspective view of a moving plate that constitutes the second camera actuator, and FIG. 14b is a rear perspective view of the moving plate that constitutes the second camera actuator.

[0262] 14a and 14b, moving plate 350 can include a first moving plate 351 and a second moving plate 352. That is, while the moving plate of the second camera actuator in the first and second embodiments is configured as a single piece, in the third embodiment, it is configured as a plurality of pieces.

[0263] The first moving plate 351 may provide a rotation axis for rotating or tilting the prism unit 330 in a second direction (e.g., up-down or y-axis direction), and the second moving plate 352 may provide a rotation axis for rotating or tilting the prism unit 330 in a first direction (e.g., left-right or x-axis direction).

[0264] Meanwhile, before describing the moving plates, it can be said that the moving plates are pivot plates for the pivot of the prism unit. Thus, in the following, the first moving plate 351 can also be called the second pivot plate, and the second moving plate 352 can also be called the second pivot plate. In the following description, the moving protrusions disposed on the first moving plate 351 and the second moving plate 352 can also be called pivot protrusions. In the following description, these will be referred to as moving plates and moving protrusions.

[0265] As described above, in the third embodiment, the rotation of the prism unit 330 in the first direction is performed by the second moving plate 352, and the rotation in the second direction is performed by the first moving plate 351. That is, the camera actuator uses different plates to handle the rotation axis for the rotation of the prism unit 330 in the first direction and the rotation axis for the rotation in the second direction. Therefore, in the embodiment, when the prism unit 330 rotates on two axes, the rotation axes are performed by different moving plates, so that more stable rotation is possible and the rotation accuracy can be increased, thereby ensuring the stability of the rotation drive.

[0266] At this time, the moving plate 350 is disposed between the housing 310 and the prism unit 330 .

[0267] The first moving plate 351 and the second moving plate 352 constituting the moving plate 350 may have the same shape and size. That is, the first moving plate 351 and the second moving plate 352 may be identical. Thus, in the embodiment, the two moving plates 350 can be identically manufactured using one equipment, thereby ensuring ease of manufacture.

[0268] However, a first moving plate 351 and a second moving plate 352 constituting the moving plate 350 are arranged in different directions between the housing 310 and the prism unit 330 .

[0269] That is, one of the first moving plate 351 and the second moving plate 352 is rotated 90 degrees with respect to the other moving plate.

[0270] The first moving plate 351 and the second moving plate 352 are coupled together.

[0271] That is, the second moving plate 352 is coupled to the housing 310. The first moving plate 351 is coupled to the second moving plate 352 with the prism unit 330 disposed on the second moving plate 352. Here, being coupled does not mean that the first moving plate 351 is fixedly coupled to the second moving plate 352, but rather that the first moving plate 351 simply comes into contact with the second moving plate 352.

[0272] At this time, the first moving plate 351 includes a plurality of protrusions and a plurality of grooves, and the second moving plate 352 also includes a plurality of protrusions and a plurality of grooves. At this time, the plurality of protrusions of the second moving plate 352 are inserted into the plurality of grooves of the first moving plate 351. This will be described in more detail.

[0273] The first moving plate 351 and the second moving plate 352 can provide a rotation axis for the movement direction of the prism unit 330 that is moved by an external driving force, such as the coil portion 323 and the magnet 325 .

[0274] The first moving plate 351 can include a first-first surface 351S1.

[0275] The 1-1 surface 351S1 may be a surface facing a fourth outer surface 330S4 of the prism unit 330.

[0276] A first moving protrusion 351P1 and a first auxiliary protrusion 351P2 are disposed on a 1-1 surface 351S1 of the first moving plate 351. The first moving protrusion 351P1 functions as a rotation axis for rotating the prism unit 330 in a second direction. The first auxiliary protrusion 351P2 may function as a stopper for limiting the rotation range of the prism unit 330 in the second direction.

[0277] The first moving protrusion 351P1 is disposed in a first direction (x-axis direction) with a distance from a central area of ​​the 1-1 surface 351S1 of the first moving plate 351. Here, the central area of ​​the 1-1 surface 351S1 may be an area facing the pulling magnet 360 fixedly disposed on the prism unit 330. Preferably, the central area of ​​the 1-1 surface 351S1 may be an area overlapping with the pulling magnet 360 fixedly disposed on the prism unit 330 in the z-axis direction.

[0278] The first moving protrusion 351P1 is disposed in an x-axis direction of the central region, i.e., the first moving protrusion 351P1 may include a first sub-first moving protrusion 351Pa disposed in a -x-axis direction with respect to the central region and a second sub-first moving protrusion 351Pb disposed in a +x-axis direction with respect to the central region.

[0279] The first sub-first moving protrusion 351Pa may correspond to the first sub-fourth recess 339R1. That is, at least a portion of the first sub-first moving protrusion 351Pa is disposed in the first sub-fourth recess 339R1. That is, at least a portion of the first sub-first moving protrusion 351Pa is inserted into the first sub-fourth recess 339R1. At this time, the height of the first sub-first moving protrusion 351Pa may be greater than the depth of the first sub-fourth recess 339R1. Thus, only a portion of the first sub-first moving protrusion 351Pa is inserted into the first sub-fourth recess 339R1. As a result, when at least a portion of the first sub-first moving protrusion 351Pa is inserted into the first sub-fourth recess 339R1, the 1-1 surface 351S1 of the first moving plate 351 can be spaced a certain distance from the fourth outer surface 330S4 of the prism mover 333.

[0280] The second sub-first moving protrusion 351Pb may correspond to the second sub-fourth recess 339R2. That is, at least a portion of the second sub-first moving protrusion 351Pb is disposed in the second sub-fourth recess 339R2. That is, at least a portion of the second sub-first moving protrusion 351Pb is inserted into the second sub-fourth recess 339R2. At this time, the height of the second sub-first moving protrusion 351Pb may be greater than the depth of the second sub-fourth recess 339R2. Thus, only a portion of the second sub-first moving protrusion 351Pb is inserted into the second sub-fourth recess 339R2. As a result, when at least a portion of the second sub-first moving protrusion 351Pb is inserted into the second sub-fourth recess 339R2, the 1-1 surface 351S1 of the first moving plate 351 can be spaced a certain distance from the fourth outer surface 330S4 of the prism mover 333.

[0281] The first sub-first moving protrusion 351Pa and the second sub-first moving protrusion 351Pb are arranged in the x-axis direction with reference to the center of the first moving plate 351, thereby providing a rotation axis for the prism unit 330 to rotate in the second direction. That is, the prism unit 330 is provided to be capable of rotational movement in the second direction (up and down direction) with reference to a virtual first line formed by the first sub-first moving protrusion 351Pa and the second sub-first moving protrusion 351Pb.

[0282] The first auxiliary protrusion 351P2 is disposed in a second direction (y-axis direction) with a distance from the central region of the 1-1 surface 351S1 of the first moving plate 351. Here, the central region of the 1-1 surface 351S1 may be a region facing the pulling magnet 360 fixedly disposed on the prism unit 330. Preferably, the central region of the 1-1 surface 351S1 may be a region overlapping with the pulling magnet 360 fixedly disposed on the prism unit 330 in the z-axis direction.

[0283] The first auxiliary protrusion 351P2 is disposed in a y-axis direction of the central region and may include a first sub-first auxiliary protrusion 351Pc disposed in a +y-axis direction with respect to the central region and a second sub-first auxiliary protrusion 351Pd disposed in a -y-axis direction with respect to the central region.

[0284] The first sub-first auxiliary protrusion 351Pc may correspond to the third sub-fourth recess 339R3. That is, at least a portion of the first sub-first auxiliary protrusion 351Pc is disposed in the third sub-fourth recess 339R3. That is, at least a portion of the first sub-first auxiliary protrusion 351Pc is inserted into the third sub-fourth recess 339R3.

[0285] At this time, the height of the first sub-first auxiliary protrusion 351Pc may be smaller than the depth of the third sub-fourth recess 339R3. Thus, the first sub-first auxiliary protrusion 351Pc is entirely inserted into the third sub-fourth recess 339R3. At this time, the difference between the height of the first sub-first auxiliary protrusion 351Pc and the depth of the third sub-fourth recess 339R3 may correspond to the movement range of the prism unit. That is, the prism unit 330 may move upward through the first moving plate 351 by the difference between the height of the first sub-first auxiliary protrusion 351Pc and the depth of the third sub-fourth recess 339R3. And, when the movement range is exceeded, the first sub-first auxiliary protrusion 351Pc may contact the bottom surface of the third sub-fourth recess 339R3 to restrict the movement of the prism unit 330.

[0286] The second sub-first auxiliary protrusion 351Pd may correspond to the fourth sub-fourth recess 339R4. That is, at least a portion of the second sub-first auxiliary protrusion 351Pd is disposed in the fourth sub-fourth recess 339R4. That is, at least a portion of the second sub-first auxiliary protrusion 351Pd is inserted into the fourth sub-fourth recess 339R4.

[0287] At this time, the height of the second sub-first auxiliary protrusion 351Pd may be smaller than the depth of the fourth sub-fourth recess 339R4. Thus, the second sub-first auxiliary protrusion 351Pd is entirely inserted into the third sub-fourth recess 339R4. At this time, the difference between the height of the second sub-first auxiliary protrusion 351Pd and the depth of the fourth sub-fourth recess 339R4 may correspond to the movement range of the prism unit. That is, the prism unit 330 may move downward through the first moving plate 351 by the difference between the height of the second sub-first auxiliary protrusion 351Pd and the depth of the fourth sub-fourth recess 339R4. And, when the movement range is exceeded, the second sub-first auxiliary protrusion 351Pd may contact the bottom surface of the fourth sub-fourth recess 339R4 to restrict the movement of the prism unit 330.

[0288] The second moving plate 352 has the same structure as the first moving plate 351. However, the second moving plate 352 is disposed in a different direction from the first moving plate 351 in the recess 313R of the housing 310. That is, the first moving plate 351 is disposed between the housing 310 and the prism unit 330 such that the first moving protrusion 351P1, which has the higher height among the two protrusions, is arranged in the x-axis direction. At this time, the second moving plate 352 includes a second moving protrusion 352P1 corresponding to the first moving protrusion 351P1 of the first moving plate 351. However, the second moving protrusion 352P1 is arranged in a direction perpendicular to the arrangement direction of the first moving protrusion 351P1. That is, the second moving protrusion 352P1 is arranged in the y-axis direction based on the center of the second moving plate 352.

[0289] The second moving plate 352 can include a 2-1 surface 352S1.

[0290] The 2-1 surface 352S1 may be a surface facing a 1-2 surface 351S2 which is the surface of the first moving plate 351 opposite to the 1-1 surface 351S1.

[0291] A second moving protrusion 352P1 and a second auxiliary protrusion 352P2 are disposed on a 2-1 surface 352S1 of the second moving plate 352. The second moving protrusion 352P1 functions as a rotation axis for rotating the prism unit 330 in a first direction. The second auxiliary protrusion 352P2 may function as a stopper for limiting the rotation range of the prism unit 330 in the first direction.

[0292] The second moving protrusion 352P1 is disposed in a second direction (y-axis direction) with a distance from the center area of ​​the 2-1 surface 352S1 of the second moving plate 352. Here, the center area of ​​the 2-1 surface 352S1 may be an area facing the pulling magnet 360 fixedly disposed on the prism unit 330. Preferably, the center area of ​​the 2-1 surface 352S1 may be an area overlapping with the pulling magnet 360 fixedly disposed on the prism unit 330 in the z-axis direction.

[0293] The second moving protrusion 352P1 is disposed to be spaced apart in the x-axis direction of the central region. That is, the second moving protrusion 352P1 may include a first sub-second moving protrusion 352Pa disposed to be spaced apart in the +y-axis direction with respect to the central region and a second sub-second moving protrusion 352Pb disposed to be spaced apart in the -y-axis direction with respect to the central region.

[0294] The first sub-second moving protrusion 352Pa and the second sub-second moving protrusion 352Pb may correspond to a first moving recess 351R disposed on a 1-2 surface 351S2 of a first moving plate 351, which will be described later. That is, the first sub-second moving protrusion 352Pa and the second sub-second moving protrusion 352Pb are fitted and coupled to a first moving recess 351R disposed on a 1-2 surface 351S2 of a first moving plate 351, which will be described later. This will be described in more detail below.

[0295] The first sub-second moving protrusion 352Pa and the second sub-second moving protrusion 352Pb are arranged in the y-axis direction with reference to the center of the second moving plate 352, thereby providing a rotation axis for the prism unit 330 to rotate in the first direction. That is, the prism unit 330 is provided to be capable of rotational movement in the first direction (left-right direction) with reference to a virtual second line formed by the first sub-second moving protrusion 352Pa and the second sub-second moving protrusion 352Pb.

[0296] The second auxiliary protrusion 352P2 is disposed in a first direction (x-axis direction) with a distance from the center area of ​​the 2-1 surface 352S1 of the second moving plate 352. Here, the center area of ​​the 2-1 surface 352S1 may be an area facing the pulling magnet 360 fixedly disposed on the prism unit 330. Preferably, the center area of ​​the 2-1 surface 352S1 may be an area overlapping with the pulling magnet 360 fixedly disposed on the prism unit 330 in the z-axis direction.

[0297] The second auxiliary protrusions 352P2 are spaced apart from each other in the x-axis direction of the central region. That is, the second auxiliary protrusions 352P2 may include a first sub-second auxiliary protrusion 352Pc spaced apart from the central region in the -x-axis direction and a second sub-second auxiliary protrusion 352Pd spaced apart from the central region in the +x-axis direction.

[0298] When the first sub-second moving protrusion 352Pa and the second sub-second moving protrusion 352Pb are fitted and coupled to the first moving recess 351R of the first moving plate 351, the first sub-second auxiliary protrusion 352Pc and the second sub-second auxiliary protrusion 352Pd may be spaced apart from the first-second surface 351S2 of the first moving plate 351 by a certain distance. The distance may correspond to the movement range of the prism unit.

[0299] That is, the prism unit 330 can move leftward on the second moving plate 352 by a distance between the first sub-second auxiliary protrusion 352Pc and the first-2 surface 351S2. If the movement range is exceeded, the first sub-second auxiliary protrusion 352Pc can contact the first-2 surface 351S2 and a bottom surface of the first moving plate 351 to restrict the movement of the prism unit 330.

[0300] In addition, the prism unit 330 can move rightward on the second moving plate 352 by a distance between the second sub-second auxiliary protrusion 352Pd and the first-second surface 351S2. If the movement range is exceeded, the second sub-second auxiliary protrusion 352Pd can contact the first-second surface 351S2 and a bottom surface of the first moving plate 351 to restrict the movement of the prism unit 330.

[0301] Meanwhile, the first moving plate 351 may include a 1-2 surface 351S2. The 1-2 surface 351S2 may be a surface facing the 2-1 surface 352S1 of the second moving plate 352.

[0302] A first moving recess 351R is disposed on a first-second surface 351S2 of the first moving plate 351.

[0303] The first moving recess 351R is arranged in the y-axis direction based on the center of the 1-2 surface 351S2 of the first moving plate 351, and thus may provide a coupling space for coupling with the second moving plate 352. That is, the first moving recess 351R may correspond to the second moving protrusion 352P1 of the second moving plate 352. That is, the first moving recess 351R may include a first sub-first moving recess 351R1 corresponding to the first sub-second auxiliary protrusion 352Pc of the second moving protrusion 352P1 and a second sub-first moving recess 351R2 corresponding to the second sub-second auxiliary protrusion 352Pd of the second moving plate 352.

[0304] As a result, the first sub-second auxiliary protrusion 352Pc of the second moving protrusion 352P1 is at least partially inserted into the first sub-first moving recess 351R1, and the second sub-second auxiliary protrusion 352Pd of the second moving plate 352 is at least partially inserted into the second sub-first moving recess 351R2.

[0305] Meanwhile, the second moving plate 352 may include a second-2 surface 352S2. The second-2 surface 352S2 may be a surface facing a fourth inner surface 310S4 of the housing 310 in which the recess 313R is formed.

[0306] A second moving recess 352R is disposed on the 2-2 surface 352S2 of the second moving plate 352. Meanwhile, the second moving recess 352R of the second moving plate 352 may be omitted. However, in order to manufacture the first moving plate 351 and the second moving plate 352 in the same process, the second moving recess 352R is disposed on the second moving plate 352 as well as the first moving plate 351.

[0307] The second moving recesses 352R are arranged in the x-axis direction with respect to the center of the 2-2 surface 352S2 of the second moving plate 352.

[0308] For example, the second moving recess 352R may include a first sub-second moving recess 352R1 arranged in the -x-axis direction based on the center of the 2-2 surface 352S2 of the second moving plate 352, and a second sub-second moving recess 352R2 arranged in the +x-axis direction based on the center of the 2-2 surface 352S2 of the second moving plate 352.

[0309] At this time, the second moving plate 352 is fixedly disposed in the recess 313R of the housing 310. At this time, an adhesive member for fixing the second moving plate 352 is disposed in the recess 313R. At this time, the second moving recess 352R can improve the bonding strength between the second moving plate 352 and the housing 310. That is, in the process of fixing the second moving plate 352 to the housing 310 using the adhesive member, the adhesive member can penetrate into the second moving recess 352R of the second moving plate 352, thereby increasing the contact area with the adhesive member and thereby improving the adhesive strength.

[0310] Meanwhile, in the embodiment, the first moving plate 351 and the second moving plate 352 may be made of the same material or different materials, and in this case, the second moving plate 352 may be made of a magnetic material.

[0311] That is, the second moving plate 352 is fixed to the housing 310. And, the pulling magnet 360 is fixed to the prism unit 330. And, the first moving plate 351 may be interposed between the second moving plate 352 and the pulling magnet 360 with a protrusion inserted into a recess of the prism unit 330 and a protrusion of the second moving plate 352 inserted into the recess.

[0312] At this time, the second moving plate 352 is formed of a magnetic material. As a result, the pulling magnet 360 and the second moving plate 352 can generate a mutual attractive force. That is, an attractive force acts between the pulling magnet 360 and the second moving plate 352. Therefore, the prism unit 330 is pressed toward the housing 310 by the attractive force. That is, the prism unit 330 is supported by the housing 310 by the attractive force. And, the first moving plate 351 is also pressed together with the prism unit 330 as the prism unit 330 is pressed, and is supported by the housing 310.

[0313] Here, the first moving plate 351 and the second moving plate 352 may be formed by a pressing method. Therefore, the first moving plate 351 and the second moving plate 352 may be formed of different materials. That is, the first moving plate 351 may be formed of a non-magnetic material unlike the second moving plate 352. For example, the first moving plate 351 may be formed of an injection mold or a ceramic material. However, in order to simplify the manufacturing process, the first moving plate 351 and the second moving plate 352 may be formed of a magnetic material. And, when the first moving plate 351 is formed of a magnetic material, the binding force between the first moving plate 351, the second moving plate 352 and the pulling magnet 360 may be further improved.

[0314] Meanwhile, on the 1-1 surface 351S1 of the first moving plate 351, the first moving protrusions and the first auxiliary protrusions are arranged in a cross shape based on the first region, and on the 2-1 surface 352S1 of the second moving plate 352, the second moving protrusions and the second auxiliary protrusions are arranged in a cross shape based on the second region. At this time, the first and second regions overlap with the pulling magnet in the third direction. That is, on the 1-1 surface 351S1 of the first moving plate 351, the first moving protrusions and the first auxiliary protrusions are arranged in a cross shape centered on the region overlapping with the pulling magnet 360 in the z-axis direction. Also, on the 2-1 surface 352S1 of the second moving plate 352, the second moving protrusions and the second auxiliary protrusions are arranged in a cross shape centered on the region overlapping with the pulling magnet 360 in the z-axis direction.

[0315] 15 and 16 are diagrams showing the coupling relationship between the housing, the prism unit and the moving protrusion in the second camera actuator according to the third embodiment.

[0316] 15 and 16, the moving plate 350 according to the embodiment may include a first moving plate 351 and a second moving plate 352. The second moving plate 352 may generate an attractive force for fixing the prism unit 330 to the housing 310, and may provide a rotation axis for rotating the prism unit 330 in a first direction.

[0317] The centers of the pulling magnet 360, the first moving plate 351 and the second moving plate 352 may overlap each other in the z-axis direction.

[0318] The first moving plate 351 is disposed between the housing 310 in which the second moving plate 352 is disposed and the prism unit 330 in which the pulling magnet 360 is disposed.

[0319] At this time, the first moving protrusion 351P1 and the first auxiliary protrusion 351P2 of the first moving plate 351 are inserted into the fourth recess 339R of the prism unit 330.

[0320] The first sub-first moving protrusion 351Pa is inserted into the first sub-fourth recess 339R1, and the second sub-first moving protrusion 351Pb is inserted into the second sub-fourth recess 339R2.

[0321] Further, the first sub-first auxiliary protrusion 351Pc is inserted into the third sub-fourth recess 339R3, and the second sub-first auxiliary protrusion 351Pd is inserted into the fourth sub-fourth recess 339R4.

[0322] Into the first moving recess 351R of the first moving plate 351, the second moving protrusion 352P1 of the second moving plate 352 is inserted.

[0323] Thus, the first moving plate 351 is pressed together with the prism unit 330 by an attractive force acting between the second moving plate 352 and the pulling magnet 360 and is supported by the housing 310 .

[0324] As a result, the first moving plate 351 serves as a rotation axis for rotating the prism unit 330 in a second direction corresponding to the y-axis direction, and the second moving plate 352 serves as a rotation axis for rotating the prism unit 330 in a first direction corresponding to the x-axis direction.

[0325] 17a and 17b are diagrams illustrating the operation of the second camera actuator according to an embodiment.

[0326] 17a, the prism unit 330 is provided to be capable of rotating in a second direction about a reference axis of a virtual first line L1 formed by a first moving protrusion 351P1 of the first moving plate 351. In particular, the driving part 320 can rotate the prism unit 330 in a vertical direction.

[0327] For example, a repulsive force is generated between the 3-1 coil portion of the third coil portion 323c adjacent to the first moving plate 351 and the 3-1 magnet of the third magnet 325c adjacent to the first moving plate 351. Also, an attractive force is generated between the 3-2 coil portion of the third coil portion 323c remote from the first moving plate 351 and the 3-2 magnet of the third magnet 325c remote from the first moving plate 351.

[0328] Therefore, the prism unit 330 can be tilted downward with the first line L1 as a reference axis. That is, the prism unit 330 can be tilted up and down by a predetermined angle with the first line L1 as a reference. Thus, the travel path of the light incident on the prism unit 330 can be controlled.

[0329] 17b, the prism unit 330 is provided to be capable of rotating in a first direction about a reference axis of a virtual second line L2 formed by the second moving protrusion 352P1 of the second moving plate 352. In particular, the driving part 320 can rotate the prism unit 330 in a left-right direction.

[0330] For example, a repulsive force is generated between the 1-1 coil part of the first coil part 323a adjacent to the second moving plate 352 and the 1-1 magnet of the first magnet 325a adjacent to the second moving plate 352. Also, an attractive force is generated between the 1-2 coil part of the first coil part 323a separated from the second moving plate 352 and the 1-2 magnet of the first magnet 325a separated from the second moving plate 352. Also, an attractive force is generated between the 2-1 coil part of the second coil part 323b adjacent to the second moving plate 352 and the 2-1 magnet of the second magnet 325b adjacent to the second moving plate 352. Also, a repulsive force is generated between the 2-2 coil part of the second coil part 323b separated from the second moving plate 352 and the 2-2 magnet of the second magnet 325b separated from the second moving plate 352.

[0331] As a result, the prism unit 330 can be tilted left and right with the second line L2 as a reference axis. That is, the prism unit 330 can be tilted left and right by a predetermined angle with the second line L2 as a reference. As a result, the travel path of the light incident on the prism unit 330 can be controlled.

[0332] <First Camera Actuator 100> The first camera actuator 100 will now be described.

[0333] FIG. 18 is a perspective view of a first camera actuator 100 according to an embodiment, FIG. 19 is a perspective view of the camera actuator according to the embodiment shown in FIG. 18 with some components omitted, and FIG. 20 is an exploded perspective view of the camera actuator according to the embodiment shown in FIG. 11 with some components omitted.

[0334] 18, the first camera actuator 100 according to the embodiment may include a base 20, a circuit board 410 arranged on the outside of the base 20, a fourth driving unit 142, and a third lens assembly 130.

[0335] FIG. 19 is an oblique view in which the base 20 and circuit board 410 are omitted from FIG. 11. Referring to FIG. 19, the first camera actuator 100 of the embodiment may include a first guide portion 210, a second guide portion 220, a first lens assembly 110, a second lens assembly 120, a third driving portion 141, and a fourth driving portion 142.

[0336] The third driving part 141 and the fourth driving part 142 may include a coil or a magnet.

[0337] For example, if the third driving part 141 and the fourth driving part 142 include coils, the third driving part 141 may include a first coil part 141b and a third yoke 141a, and the fourth driving part 142 may include a second coil part 142b and a fourth yoke 142a.

[0338] Alternatively, on the contrary, the third driving part 141 and the fourth driving part 142 may include magnets.

[0339] In the x-y-z axis directions shown in FIG. 20, the z-axis refers to the optic axis direction or a direction parallel to it, the xz plane indicates the paper surface, the x-axis refers to a direction perpendicular to the z-axis on the paper surface (xz plane), and the y-axis refers to a direction perpendicular to the paper surface.

[0340] Referring to FIG. 20, the first camera actuator 100 according to the embodiment may include a base 20, a first guide portion 210, a second guide portion 220, a first lens assembly 110, a second lens assembly 120, and a third lens assembly 130.

[0341] For example, the first camera actuator 100 of the embodiment may include a base 20, a first guide portion 210 arranged on one side of the base 20, a second guide portion 220 arranged on the other side of the base 20, a first lens assembly 110 corresponding to the first guide portion 210, a second lens assembly 120 corresponding to the second guide portion 220, a first ball bearing 117 (see FIG. 15a) arranged between the first guide portion 210 and the first lens assembly 110, and a second ball bearing (not shown) arranged between the second guide portion 220 and the second lens assembly 120.

[0342] Additionally, the embodiment may include a third lens assembly 130 disposed in front of the first lens assembly 110 in the optical axis direction.

[0343] Hereinafter, specific features of the camera device according to the embodiment will be described in detail with reference to the drawings.

[0344] <Guide section> 19 and 20, an embodiment may include a first guide portion 210 arranged adjacent to the first side wall 21a of the base 20, and a second guide portion 220 arranged adjacent to the second side wall 21b of the base 20.

[0345] The first guide part 210 is disposed between the first lens assembly 110 and the first side wall of the base 20 .

[0346] The second guide part 220 is disposed between the second lens assembly 120 and the second side wall 21b of the base 20. The first side wall 21a and the second side wall 21b of the base are disposed to face each other.

[0347] According to the embodiment, the lens assembly is driven with the first guide part 210 and the second guide part 220, which are precisely numerically controlled within the base, combined, thereby reducing friction torque and frictional resistance, resulting in technical effects such as improved driving force during zooming, reduced power consumption, and improved control characteristics.

[0348] As a result, according to the embodiment, friction torque during zooming is minimized, and lens decentering, lens tilt, and misalignment of the central axis of the lens group and the image sensor are prevented, resulting in multiple technical effects of significantly improving image quality and resolution.

[0349] In the conventional technology, when a guide rail is placed on the base itself, a gradient occurs along the injection direction, making it difficult to manage the size. In addition, if the injection is not performed properly, there is a technical problem that the friction torque increases and the driving force decreases.

[0350] On the other hand, according to the embodiment, a guide rail is not arranged on the base itself, but the first guide part 210 and the second guide part 220 which are formed separately from the base 20 and assembled thereto are separately adopted, which has a special technical effect of preventing the occurrence of a gradient along the injection direction.

[0351] The base 20 is injected in the Z-axis direction. In the conventional technology, when the base is integrally formed with the rail, a gradient occurs as the rail is injected in the Z-axis direction, causing a problem that the straightness of the rail is distorted.

[0352] According to the embodiment, the first guide part 210 and the second guide part 220 are injected separately from the base 20, which significantly prevents the occurrence of gradients compared to the conventional technology, enables precision injection, and has the special technical effect of preventing the occurrence of gradients due to injection.

[0353] In the embodiment, the first guide part 210 and the second guide part 220 are ejected along the X-axis and have a length shorter than that of the base 20. In this case, when the rails 212 and 222 are disposed on the first guide part 210 and the second guide part 220, the occurrence of a gradient during ejection can be minimized, resulting in a technical effect that the straight line of the rails is less likely to be distorted.

[0354] FIG. 21 is an enlarged perspective view of the first guide part 210 and the second guide part 220 in the camera actuator according to the embodiment.

[0355] 21, in an embodiment, the first guide part 210 may include a single or multiple first rails 212. Also, the second guide part 220 may include a single or multiple second rails 222.

[0356] For example, the first rail 212 of the first guide part 210 may include a 1-1 rail 212a and a 1-2 rail 212b. The first guide part 210 may include a first support part 213 between the 1-1 rail 212a and the 1-2 rail 212b.

[0357] According to the embodiment, by providing two rails per lens assembly, there is a technical effect that even if any one of the rails is distorted, the remaining one can ensure accuracy.

[0358] In addition, according to the embodiment, by providing two rails per lens assembly, even if one of the rails has a ball friction force issue, which will be described later, the remaining rail can smoothly roll and drive, thereby ensuring a sufficient driving force.

[0359] The first rail 212 may be connected from one surface of the first guide part 210 to the other surface thereof.

[0360] The camera actuator and the camera module including the same according to the embodiments have the technical effect of solving problems of lens decenter and tilt during zooming, and by properly aligning and spacing between a plurality of lens groups, preventing changes in the angle of view and defocusing, thereby significantly improving image quality and resolution.

[0361] For example, according to the embodiment, the first guide portion 210 has a 1-1 rail 212a and a 1-2 rail 212a, and the 1-1 rail 212a and the 1-2 rail 212a guide the first lens assembly 110, thereby achieving the technical effect of improving alignment accuracy.

[0362] In addition, according to the embodiment, by providing two rails per lens assembly, it is possible to ensure a wide gap between the balls described below, thereby improving the driving force, preventing magnetic field interference, and providing the technical effect of preventing tilt when the lens assembly is stopped or moving.

[0363] In addition, the first guide portion 210 may include a first guide protrusion 215 extending in a lateral direction perpendicular to the direction in which the first rail 212 extends.

[0364] A first protrusion 214p may be included on the first guide protrusion 215. For example, the first protrusion 214p may include a 1-1 protrusion 214p1 and a 1-2 protrusion 214p2.

[0365] Also, referring to FIG. 21, in an embodiment, the second guide part 220 may include a single or multiple second rails 222.

[0366] For example, the second rail 222 of the second guide part 220 may include a 2-1 rail 222a and a 2-2 rail 222b. The second guide part 220 may include a second support part 223 between the 2-1 rail 222a and the 2-2 rail 222b.

[0367] The second rail 222 may be connected from one surface of the second guide part 220 to the other surface thereof.

[0368] In addition, the second guide part 220 may include a second guide protrusion 225 extending in a lateral direction perpendicular to the extension direction of the second rail 222 .

[0369] The second guide protrusion 225 may include a second protrusion 224p on the upper side thereof, the second protrusion 224p including a 2-1 protrusion 224p1 and a 2-2 protrusion 224p2.

[0370] The 1-1 protrusion 214p1 and the 1-2 protrusion 214p2 of the first guide portion 210 and the 2-1 protrusion 224p1 and the 2-2 protrusion 224p2 of the second guide portion 220 are coupled to a third housing 21 of a third lens assembly 130, which will be described later.

[0371] According to the embodiment, the first guide portion 210 has a 1-1 rail 212a and a 1-2 rail 212b, and the 1-1 rail 212a and the 1-2 rail 212b guide the first lens assembly 110, thereby achieving the technical effect of improving alignment accuracy.

[0372] In addition, according to the embodiment, the second guide portion 220 has a 2-1 rail 222a and a 2-2 rail 222b, and the 2-1 rail 222a and the 2-2 rail 222b guide the second lens assembly 120, thereby providing a technical effect of improving alignment accuracy.

[0373] In addition, by providing two rails per lens assembly, there is a technical effect that even if one of the rails is distorted, the remaining rail can ensure accuracy.

[0374] In addition, according to the embodiment, by providing two rails per lens assembly, it is possible to ensure a wide gap between the balls described below, thereby improving the driving force, preventing magnetic field interference, and providing the technical effect of preventing tilt when the lens assembly is stopped or moving.

[0375] In addition, according to the embodiment, by providing two rails per lens assembly, even if one of the rails has a ball friction force issue, which will be described later, the remaining rail can smoothly roll and drive, thereby ensuring a sufficient driving force.

[0376] In addition, according to the embodiment, a guide rail is not provided on the base itself, but the first guide part 210 and the second guide part 220 are separately formed and assembled to the base 20, thereby providing a special technical effect of preventing the occurrence of a gradient along the injection direction.

[0377] In the conventional technology, when a guide rail is placed on the base itself, a gradient occurs along the injection direction, making it difficult to manage the size. In addition, if the injection is not performed properly, there is a technical problem that the friction torque increases and the driving force decreases.

[0378] Next, Figure 22a is an oblique view of the first lens assembly 110 in the camera actuator of the embodiment shown in Figure 20, and Figure 22b is an oblique view of the first lens assembly 110 shown in Figure 22a with some components removed.

[0379] Referring back to FIG. 20 , an embodiment may include a first lens assembly 110 moving along the first guide portion 210 and a second lens assembly 120 moving along the second guide portion 220 .

[0380] Referring again to FIG. 22a, the first lens assembly 110 may include a first lens barrel 112a in which the first lens 113 is disposed, and a first actuator housing 112b in which the first actuator 116 is disposed. The first lens barrel 112a and the first actuator housing 112b may be a first housing, and the first housing may have a barrel or lens barrel shape. The first actuator 116 may be a magnet actuator, but is not limited thereto, and a coil may be disposed in some cases.

[0381] The second lens assembly 120 may include a second lens barrel (not shown) in which a second lens (not shown) is disposed, and a second actuator housing (not shown) in which a second 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 have a barrel or lens barrel shape. The second actuator may be a magnet actuator, but is not limited thereto, and a coil may be disposed in some cases.

[0382] The first driving part 116 may correspond to the two first rails 212 , and the second driving part may correspond to the two second rails 222 .

[0383] The embodiment may be driven using a single ball or multiple balls. For example, the embodiment may include a first ball bearing 117 disposed between the first guide portion 210 and the first lens assembly 110, and a second ball bearing (not shown) disposed between the second guide portion 220 and the second lens assembly 120.

[0384] For example, in an embodiment, the first ball bearing 117 may include a single or multiple 1-1 ball bearings 117a arranged on the upper side of the first drive unit housing 112b and a single or multiple 1-2 ball bearings 117b arranged on the lower side of the first drive unit housing 112b.

[0385] In an embodiment, the 1-1 ball bearing 117a of the first ball bearing 117 can move along the 1-1 rail 212a, which is one of the first rails 212, and the 1-2 ball bearing 117b of the first ball bearing 117 can move along the other 1-2 rail 212b of the first rails 212.

[0386] The camera actuator and the camera module including the same according to the embodiments have the technical effect of solving problems of lens decenter and tilt during zooming, preventing changes in the angle of view and defocusing by properly aligning multiple lens groups, and significantly improving image quality and resolution.

[0387] For example, according to the embodiment, the first guide portion has a 1-1 rail and a 1-2 rail, and the 1-1 rail and the 1-2 rail guide the first lens assembly 110, thereby achieving the technical effect of improving the alignment accuracy of the optical axis with the second lens assembly 110 when the first lens assembly 110 moves.

[0388] 22b, in an embodiment, the first lens assembly 110 may include a first assembly groove 112b1 in which the first ball bearing 117 is disposed, and the second lens assembly 120 may include a second assembly groove (not shown) in which the second ball is disposed.

[0389] The first lens assembly 110 may have a plurality of first assembly grooves 112b1. In this case, a distance between two of the plurality of first assembly grooves 112b1 in the optical axis direction may be longer than a thickness of the first lens barrel 112a.

[0390] In an embodiment, the first assembly groove 112b1 of the first lens assembly 110 may have a V-shape. Also, the second assembly groove (not shown) of the second lens assembly 120 may have a V-shape. The first assembly groove 112b1 of the first lens assembly 110 may have a U-shape or a shape that contacts the first ball bearing 117 at two or three points other than the V-shape. Also, the second assembly groove (not shown) of the second lens assembly 120 may have a U-shape or a shape that contacts the first ball bearing 117 at two or three points other than the V-shape.

[0391] Next, FIG. 23 is a driving example diagram of the camera actuator according to the embodiment.

[0392] With reference to FIG. 23, an interaction generated by an electromagnetic force DEM between the first driving unit 116, which is a magnet driving unit, and the first coil unit 141b in the camera actuator according to the embodiment will be described.

[0393] 23, the magnetization method of the magnet in the first driving unit 116 in the camera actuator according to the embodiment may be a vertical magnetization method. For example, in the embodiment, the N pole 116N and the S pole 116S of the magnet are both magnetized to face the first coil unit 141b. As a result, the N pole 116N and the S pole 116S of the magnet are each arranged so as to correspond to a region where a current flows from the first coil unit 141b in the y-axis direction perpendicular to the paper surface.

[0394] Referring to Figure 23, in an embodiment, when a magnetic force DM is applied in the opposite direction to the x-axis from the N pole 116N of the first drive unit 116 (the direction of the magnetic force may be the positive or negative direction of the direction shown in the figure), and a current DE flows in the y-axis direction from the region of the first coil unit 141b corresponding to the N pole 116N, an electromagnetic force DEM acts in the z-axis direction according to Fleming's left-hand rule.

[0395] Also, in an embodiment, when a magnetic force DM is applied in the x-axis direction from the S pole 116S of the first drive unit 116, and a current DE flows from the first coil unit 141b corresponding to the S pole 116S in the opposite direction to the y-axis perpendicular to the paper surface, an electromagnetic force DEM acts in the z-axis direction according to Fleming's left-hand rule (the direction of the electromagnetic force may be the positive or negative direction of the direction shown in the figure).

[0396] At this time, since the third actuator 141 including the first coil unit 141b is in a fixed state, the first lens assembly 110, which is a mover in which the first actuator 116 is disposed, can move back and forth along the rail of the first guide unit 210 in a direction parallel to the z-axis direction by the electromagnetic force DEM along the current direction. The electromagnetic force DEM is controlled in proportion to the current DE applied to the first coil unit 141b.

[0397] Similarly, in the camera actuator of the embodiment, an electromagnetic force DEM is generated between a second magnet (not shown) and the second coil portion 142b, allowing the second lens assembly 120 to move along the rail of the second guide portion 220 horizontally to the optical axis.

[0398] As mentioned above, in the conventional technology, when implementing AF or Zoom, multiple lens assemblies are driven by electromagnetic force between a magnet and a coil, and a Hall sensor is disposed inside the coil winding to obtain position information of the lens assembly. The inside of the coil winding where the Hall sensor is disposed may be hollow. The Hall sensor can obtain position information of the lens assembly by detecting a change in magnetic flux of a magnet disposed in the lens assembly. When the Hall sensor is disposed inside the coil, the distance between the Hall sensor and the magnet is determined by the height of the coil.

[0399] However, in the conventional technology, a certain thrust is required for the movement of the lens assembly, and in order to secure such thrust, the coil needs to have a certain height or more.

[0400] However, when the coil height is increased, the distance between the Hall sensor and the magnet increases due to the increased coil, which blocks the magnetic flux of the magnet, resulting in a technical contradiction in that the sensitivity of the magnetic flux sensed by the Hall sensor placed inside the coil decreases.On the other hand, if the coil height is reduced, the electromagnetic force between the magnet and the coil weakens, resulting in a problem of reduced thrust for AF or Zoom drive.

[0401] According to the applicant's undisclosed internal technology, in order to solve this problem, the optimum point of the Hall sensor sensitivity and thrust is set by using a coil of the appropriate height. In addition, a decrease in thrust or weakening of the Hall sensor sensitivity will cause issues with the precision of the camera control, resulting in decentering or tilting of the camera module, which will directly affect the safety and life of the users, i.e. the driver and pedestrians.

[0402] Therefore, one of the technical objectives of the embodiment is to provide a camera actuator that can increase the thrust force and simultaneously increase the sensitivity of the Hall sensor, and a camera module including the same.

[0403] FIG. 24 is a cross-sectional view taken along line C1-C2 of the camera actuator according to the embodiment shown in FIG.

[0404] 24, the first camera actuator 100 according to the embodiment may include a base 20 and a lens assembly disposed on the base 20. For example, a third lens assembly 130, a first lens assembly 110, and a second lens assembly 120 are sequentially disposed on the base 20 based on the direction of incidence of light, and an image sensor 180 is disposed behind the second lens assembly 120.

[0405] As described above, the first camera actuator 100 according to the embodiment is driven by the electromagnetic force of a predetermined magnet and coil portion.

[0406] For example, referring to FIG. 24, in the camera actuator of the embodiment, the first lens assembly 110 may include a first actuator 116 and a third actuator 141, and the second lens assembly 120 may include a second actuator 126 and a fourth actuator 142.

[0407] The first driving unit 116 and the second driving unit 126 may be magnet driving units, and the third driving unit 141 and the fourth driving unit 142 may be coil driving units, but are not limited thereto.

[0408] Hereinafter, a case will be described in which the first driving unit 116 and the second driving unit 126 are magnet driving units, and the third driving unit 141 and the fourth driving unit 142 are coil driving units.

[0409] In the camera actuator according to the embodiment, the first actuator 116 in the first lens assembly 110 may include a first magnet 116b and a first yoke 116a, and the third actuator 141 may include a first coil unit 141b and a third yoke 141a. The third actuator 141 may include a first circuit board 41a between the first coil unit 141b and the third yoke 141a.

[0410] Also, the embodiment may include a first spacer 141c disposed on the base 20 and a first position detection sensor 71 disposed on the first spacer 141c. The first spacer 141c may be made of at least one of PC (Polycarbonate), PETG (Polyethylene Terephthalate Glycol), PE (polyethylene), and PP (polypropylene), but is not limited thereto.

[0411] The first position detection sensor 71 may be a magnetic sensor. For example, the first position detection sensor 71 may be any one of a solid-state magnetic sensor such as a Hall sensor, a coil-type magnetic sensor, or a resonant magnetic sensor, but is not limited thereto.

[0412] In addition, in the camera actuator according to the embodiment, the second driving unit 126 in the second lens assembly 120 may include a second magnet 126b and a second yoke 126a, and the fourth driving unit 142 may include a second coil unit 142b and a fourth yoke 142a. The fourth driving unit 142 may include a second circuit board 41b between the second coil unit 142b and the fourth yoke 142a.

[0413] Also, the embodiment may include a second spacer 142c disposed on the base 20 and a second position detection sensor 72 disposed on the second spacer 142c. The second spacer 142c may be made of at least one of PC (Polycarbonate), PETG (Polyethylene Terephthalate Glycol), PE (polyethylene), and PP (polypropylene), but is not limited thereto.

[0414] The second position detection sensor 72 may be any one of magnetic sensors including a coil-type magnetic sensor, a solid-state magnetic sensor such as a Hall sensor, and a resonant magnetic sensor, but is not limited thereto.

[0415] Hereinafter, technical features of the arrangement structure of the position sensor according to the embodiment will be described in detail with reference to FIG. 24 and FIGS. 25a to 25c.

[0416] FIG. 25a is an enlarged view of the S region shown in FIG. 24, and FIG. 18b is a detailed view of the S region shown in FIG. 18a.

[0417] First, referring to Figures 24 and 25a, the embodiment may include a base 20, a first lens assembly 110 disposed in the base 20, the third actuator 141 which is a coil actuator disposed in the base 20, a first spacer 141c disposed on the base 20, and a first position detection sensor 71 disposed on the first spacer 141c.

[0418] The third driving part 141 may include a first circuit board 41a disposed between the first coil part 141b and the third yoke 141a.

[0419] The first coil portion 141b and the first position detecting sensor 71 are electrically connected to the first circuit board 41a.

[0420] Next, referring to FIG. 25b, the first spacer 141c includes a first support portion 141c1 and a first protrusion portion 141c3 protruding from the first support portion 141c1, the first position detection sensor 71 is disposed on the first protrusion portion 141c3, and the first protrusion portion 141c3 is disposed in the hollow of the first coil portion 141b, which is a coil driving portion.

[0421] In this embodiment, a first connecting portion 141c2 that connects the first protrusion 141c3 and the first support portion 141c1 may be provided.

[0422] 25b, the first circuit board 41a may include a first board region 41a1 disposed on the first spacer 141c and a second board region 41a3 disposed apart from the first board region 41a1. The first circuit board 41a may include a second-2 board region 41a2 connecting the first board region 41a1 and the second board region 41a3. The first position detection sensor 71 is disposed on the second board region 41a3, and the second board region 41a3 is disposed in the hollow of a first coil unit 141b which is a coil driving unit.

[0423] Also, referring to FIG. 24, the embodiment may include a base 20, a second lens assembly 120 disposed in the base 20, the fourth actuator 142 which is a coil actuator disposed in the base 20, a second spacer 142c disposed on the base 20, and a second position detection sensor 72 disposed on the second spacer 142c.

[0424] The second spacer 142c may also adopt the technical features of the first spacer 141c. For example, referring to Fig. 17, the second spacer 142c includes a second protruding portion (not shown) protruding from a second support portion (not shown), the second position detection sensor 72 is disposed on the second protruding portion, and the second protruding portion is disposed in the hollow of the fourth driving portion 142, which is a coil driving portion.

[0425] The second protrusion may include a second mounting portion (not shown), and the second position detection sensor 72 is disposed on the second mounting portion.

[0426] 24, the second circuit board 41b may include a third board region (not shown) disposed on the second spacer 142c and a fourth board region (not shown) disposed apart from the third board region. The second circuit board 41b may include a 4-2 board region connecting the third board region and the fourth board region.

[0427] The second position detection sensor 72 is disposed on the 4-2 substrate area, and the 4-2 substrate area is disposed in the hollow of a fourth driving unit 142 which is a coil driving unit.

[0428] Referring again to FIG. 25b, the first lens assembly 110 is driven in the optical axis direction by an electromagnetic force DEM between the first magnet 116b of the first actuator 116 and the first coil unit 141b of the third actuator 141.

[0429] At this time, the electromagnetic force DEM is affected by the distance (DCM) between the first magnet 116b and the first coil portion 141b.

[0430] The magnetic flux of the magnet sensed by the Hall sensor changes depending on the separation distance between the Hall sensor and the magnet, which affects the position sensing performance of the Hall sensor.

[0431] For example, FIG. 25c shows magnetic flux data according to the distance between the magnet and first position detection sensor 71 in the example and the comparative example.

[0432] In conventional internal technology, the height of the coil must be guaranteed to ensure thrust. Conventionally, the Hall sensor was placed on the PCB at the bottom of the coil, and as the height of the coil increased, the separation distance between the magnet and the Hall sensor increased. As a result, there was a technical limit of having to ensure that the first distance DH1 between the magnet and the Hall sensor was at least 800 μm.

[0433] As a result, in the conventional internal technology (comparison example), the magnetic flux of the magnet detected by the Hall sensor was at a level of approximately 50 mT.

[0434] In addition, with conventional internal technology, as the height of the coil increases, some of the magnetic flux from the magnet that can flow into the Hall sensor located in the hollow part of the coil is blocked, resulting in a problem of reduced sensitivity of the Hall sensor.

[0435] On the other hand, according to the embodiment, the first spacer 141c includes a first protrusion 141c3 protruding from the first support portion 141c1, and the first position detection sensor 71 is disposed on the first protrusion 141c3, thereby significantly reducing the second distance DH2 between the first magnet 116b and the first position detection sensor 71, thereby resulting in a technical effect of significantly improving the magnetic flux of the first magnet 116b detected by the first position detection sensor 71.

[0436] For example, according to the embodiment, the first position detection sensor 71 is disposed on the first protrusion 141c3, so that the second distance DH2 between the first magnet 116b and the first position detection sensor 71 can be ensured to be less than 400 μm, which is more than twice as short as compared to the comparative example, and this has the unique technical effect of ensuring that the magnetic flux between the first magnet 116b and the first position detection sensor 71 is approximately 150 (mT), which is nearly three times higher than compared to the comparative example.

[0437] In addition, according to the embodiment, since the first position detection sensor 71 is disposed on the first protrusion 141c3, the first position detection sensor 71 is almost exposed to the first magnet 116b even when disposed in the hollow of the first coil portion 141b, which has the special technical effect of significantly reducing magnetic flux blockage by the first coil portion 141b.

[0438] As a result, the camera actuator according to the embodiment and the camera module including the same have a unique technical effect of being able to increase the thrust force and simultaneously increase the sensitivity of the Hall sensor.

[0439] Next, one of the technical objectives of the embodiment is to provide a camera actuator and a camera module including the same, which can prevent magnetic field interference between magnets attached to each lens assembly when multiple lens assemblies are driven by electromagnetic force between a magnet and a coil during implementation of AF or Zoom.

[0440] Also, one of the technical objectives of the embodiment is to provide a camera actuator capable of preventing the magnet and the yoke from becoming detached, and a camera module including the same.

[0441] Hereinafter, the magnetic field interference prevention structure of the embodiment will be described with reference to Figs. 26a to 26c.

[0442] Next, FIG. 26a is a perspective view of the first driving unit 116 in the camera actuator according to the embodiment.

[0443] Referring to FIG. 26a, in an embodiment, the first driving part 116 includes a first magnet 116b and a first yoke 116a, and the first yoke 116a may include a first support part 116a1 and a first side protrusion part 116a2 extending from the first support part 116a1 to a side of the first magnet 116b.

[0444] The first side protrusions 116a2 are disposed on both sides of the first magnet 116b.

[0445] In addition, the first yoke 116a may include a first fixed protrusion 116a3 extending in a different direction, for example, an opposite direction, from the first side protrusion 116a2.

[0446] The first fixing protrusion 116a3 is disposed at a position approximately in the middle of the first support portion 116a1, but is not limited thereto.

[0447] Similarly, in an embodiment, the second driving part 126 includes a second magnet 126b and a second yoke 126a, and the second yoke 126a may include a second support part (not shown) and a second side protrusion part extending from the second support part to a side of the second magnet 126b (see the structure of the second yoke 126a in FIG. 24).

[0448] The second side protrusions are disposed on both sides of the second magnet 126b. The second yoke 126a may include a second fixed protrusion (not shown) extending in a different direction, for example, in the opposite direction, from the second side protrusions. The second fixed protrusion is disposed at a position approximately in the middle of the second support, but is not limited thereto.

[0449] In the conventional technology, when implementing AF or Zoom, multiple lens assemblies are driven by electromagnetic force between magnets and coils, but there is a problem that magnetic field interference occurs between the magnets attached to each lens assembly, and the AF or Zoom drive is not performed properly due to the magnetic field interference between the magnets, and the thrust is reduced.

[0450] Also, there is a problem that the decenter and tilt phenomena are caused by magnetic field interference between magnets.

[0451] If such magnetic field interference causes issues with the precision of camera control, reduces thrust, or induces decentering or tilting, it can have a direct impact on the safety and lives of the users (drivers and pedestrians).

[0452] For example, FIG. 26b shows magnetic flux density distribution data in a comparative example.

[0453] The comparative example in Fig. 26b is a structure applied to provide a magnetic flux shielding function by arranging a back yoke for the magnet, which is an undisclosed internal technology of the applicant. Although the application of such a back yoke technology to the magnet has some improvements in magnetic flux shielding performance, there are still technical problems as follows.

[0454] For example, referring to FIG. 26b, which shows magnetic flux density data between the magnets mounted on the first lens assembly and the second lens assembly, there is a problem that magnetic field interference (IF) occurs between the magnets, and that the magnetic flux generated in each magnet leaks (LE), resulting in a loss of thrust.

[0455] In particular, in the case of the currently used high-magnification zoom actuator, not only does magnetic field interference occur between the permanent magnets of the first lens assembly, which is the moving lens, and the second lens assembly, but there is also a problem of magnetic field interference (IF) with the magnet of the OIS actuator.

[0456] Such magnetic field interference (IF) interferes with the movement of each group, resulting in a problem of an increase in the input current.

[0457] According to the embodiment, a yoke in the magnet driving part of the first lens assembly 110 or the second lens assembly 120 includes a side protrusion extending to the side of the magnet, thereby providing a special technical effect of providing a camera actuator and a camera module including the same that can prevent magnetic field interference between magnets attached to each lens assembly when multiple lens assemblies are driven by electromagnetic force between the magnet and coil when implementing AF or Zoom.

[0458] For example, FIG. 26c shows magnetic flux density distribution data in an embodiment.

[0459] Referring to FIG. 26c, this shows magnetic flux density data between the respective magnets attached to the first lens assembly and the second lens assembly in the embodiment. Since the yokes in the magnet driving parts of the first lens assembly 110 and the second lens assembly 120 include side protrusions that extend to the sides of the magnets, magnetic field interference (IF) between the magnets is prevented, and the precision of camera control is significantly improved.

[0460] In addition, according to the embodiment, the yoke in the magnet driving part of the first lens assembly 110 and the second lens assembly 120 includes a side protrusion that extends to the side of the magnet, thereby preventing leakage flux of magnetic flux generated by the magnet. In addition, by arranging the side protrusion in an area where the magnetic flux density is high, the magnetic flux is concentrated (FC), thereby increasing the density between the flux line and the coil, and the Lorentz force is increased, resulting in a technical effect of significantly improving thrust.

[0461] Next, FIG. 27 is an exemplary diagram of an integrated body 315 in a camera module according to another embodiment.

[0462] In a camera module according to another embodiment, a first camera actuator 100 is disposed in a first body region 315a of an integrated body 315, and a second camera actuator 300 is disposed in a second body region 315b.

[0463] Next, FIG. 28 shows a mobile terminal 1500 to which a camera module according to an embodiment of the present invention is applied.

[0464] As shown in FIG. 28, the mobile terminal 1500 of the embodiment may include a camera module 1000, a flash module 1530, and an autofocus device 1510 provided on the rear surface.

[0465] The camera module 1000 may include an image capturing function and an autofocus function. For example, the camera module 1000 may include an autofocus function using an image.

[0466] The camera module 1000 processes still or moving image frames obtained by an image sensor in a photographing mode or a video call mode. The processed image frames can be displayed on a predetermined display unit or stored in a memory. A camera (not shown) may also be disposed on the front of the body of the mobile terminal.

[0467] 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 implement an OIS together with an AF or zoom function.

[0468] The flash module 1530 may include a light emitting element for emitting light therein, and may be operated by a camera of the mobile terminal or by a user's control.

[0469] The autofocus device 1510 may include one of a package of surface emitting laser elements as a light emitter.

[0470] The autofocus device 1510 may include an autofocus function using a laser. The autofocus device 1510 is mainly used under conditions where the autofocus function using the image of the camera module 1000 is degraded, for example, in a close environment of 10 m or less or in a dark environment. The autofocus device 1510 may include a light emitting unit including a VCSEL semiconductor device and a light receiving unit such as a photodiode that converts optical energy into electrical energy.

[0471] Next, FIG. 29 is a perspective view of a vehicle 700 to which a camera module according to an embodiment is applied.

[0472] For example, FIG. 22 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.

[0473] 29, a vehicle 700 according to an 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.

[0474] The camera 2000 may be a camera sensor to which the camera module 1000 according to the embodiment is applied.

[0475] The vehicle 700 of the embodiment can acquire image information through a camera sensor 2000 that captures a forward image or a surrounding image, and can determine an unidentified lane situation using the image information and generate a virtual lane when the lane is unidentified.

[0476] For example, the camera sensor 2000 may capture an image in front of the vehicle 700 to obtain a front image, and a processor (not shown) may analyze objects included in the front image to obtain image information.

[0477] For example, if the image captured by the camera sensor 2000 includes objects such as a lane marking, an adjacent vehicle, an obstacle to driving, and an indirect road marking, such as a median strip, a curb, or a row of trees, the processor can detect such objects and include them in the image information.

[0478] At this time, the processor may further complement the image information by acquiring distance information to the object detected through the camera sensor 2000. The image information may be information about an object captured in the image.

[0479] Such a camera sensor 2000 may include an image sensor and an image processing module. The camera sensor 2000 may process still or moving images obtained by an image sensor (e.g., CMOS or CCD). The image processing module may process still or moving images obtained through the image sensor to extract necessary information and transmit the extracted information to a processor.

[0480] 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 secure information such as the distance between the vehicle 700 and the object.

[0481] The features, structures, effects, etc. described in the above embodiments are included in at least one embodiment of the present invention, and are not necessarily limited to one embodiment. In addition, the features, structures, effects, etc. exemplified in each embodiment can be combined or modified in another embodiment by a person having ordinary knowledge in the field to which the embodiment belongs. Therefore, the contents related to such combinations and modifications should be interpreted as being included in the scope of the present invention.

[0482] In addition, the above description has been centered on the embodiments, but these are merely examples and do not limit the present invention. A person having ordinary skill in the art to which the present invention pertains may make various modifications and applications not exemplified above within the scope of the essential characteristics of the present embodiments. For example, each component specifically presented in the embodiments may be modified and implemented. The 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 and a prism unit disposed within the housing; A drive unit that tilts the prism unit; a moving plate disposed between the housing and the prism unit; The prism unit includes a prism mover having a housing portion and a prism disposed in the housing portion of the prism mover. A pulling magnet is disposed on the prism mover to generate an attractive force together with the moving plate, the prism mover is supported by the housing by an attractive force between the moving plate and the pulling magnet and tilts about a rotation reference axis of the moving plate; the moving plate includes one surface and another surface opposite to the one surface, the rotation reference axis is integrally formed with the moving plate and is a convex surface provided on the one surface of the moving plate, The other surface of the moving plate has a concave surface corresponding to the convex surface.

2. The camera actuator according to claim 1 , wherein the moving plate is made of a magnetic material.

3. the moving plate includes a first and a second moving plate; the second moving plate is fixedly disposed within a recess of the housing and is made of a magnetic material for generating an attractive force with the pulling magnet; 3. The camera actuator of claim 1, wherein the first moving plate is disposed between the prism mover and the second moving plate and is supported on the housing by the attractive force.

4. a surface of the first moving plate facing the prism mover includes a plurality of first convex surfaces spaced apart in a first direction; The camera actuator of claim 3 , wherein a surface of the second moving plate facing the first moving plate includes a plurality of second convex surfaces spaced apart in a second direction perpendicular to the first direction.

5. The prism unit includes: a first imaginary line formed by the first convex surfaces is used as a reference axis to enable rotational movement in the second direction; The camera actuator according to claim 4 , wherein a rotational movement is provided in the first direction about a virtual second line formed by the plurality of second convex surfaces as a reference axis.

6. a first recess in which the pulling magnet is disposed on one outer surface of the prism mover opposite to one surface of the first moving plate; The camera actuator according to claim 4 or 5, further comprising a plurality of second recesses spaced apart from each other in the first direction around the first recess, into which the plurality of first convex surfaces are inserted.

7. 7. The camera actuator of claim 4, wherein the other surface of the first moving plate opposite the one surface of the second moving plate includes a plurality of first concave surfaces spaced apart in the second direction and into which the plurality of second convex surfaces are inserted.

8. the one surface of the first moving plate includes a plurality of first auxiliary convex surfaces spaced apart in the second direction; 8. A camera actuator according to claim 4, wherein the one surface of the second moving plate includes a plurality of second auxiliary convex surfaces spaced apart in the first direction.

9. The prism unit includes: The rotation range in the second direction is limited by the first auxiliary convex surfaces, The camera actuator of claim 8 , wherein the range of rotation in the first direction is limited by the plurality of second auxiliary convex surfaces.

10. On the one surface of the first moving plate, the plurality of first convex surfaces and the plurality of first auxiliary convex surfaces are arranged in a cross shape with respect to a first region; On the one surface of the second moving plate, the plurality of second convex surfaces and the plurality of second auxiliary convex surfaces are arranged in a cross shape with respect to a second region; The camera actuator according to claim 8 or 9, wherein the first and second regions overlap the pulling magnet in a third direction.

11. Housing and a prism unit disposed within the housing; A drive unit that tilts the prism unit; a first pivot plate disposed on a side wall of the housing; a second pivot plate disposed between the first pivot plate and the prism unit; The prism unit includes a pulling magnet, the prism unit tilts about a rotation reference axis of the first pivot or the second pivot plate while being supported by the housing by an attractive force between the pulling magnet and the first pivot plate; The first pivot plate or the second pivot plate includes one surface and another surface opposite to the one surface, the rotation reference axis is integrally formed with the first pivot plate or the second pivot plate, and is a convex surface provided on the one surface of the first pivot plate or the second pivot plate, A camera actuator, wherein the other surface of the first pivot plate or the second pivot plate has a concave surface corresponding to the convex surface.

12. The camera actuator according to claim 11 , wherein the first pivot plate is made of a magnetic material that generates an attractive force together with the pulling magnet.

13. The camera actuator of claim 12 , wherein the second pivot plate is made of a magnetic or non-magnetic material.

14. the first pivot plate includes a plurality of first protruding surfaces; A camera actuator according to claim 11 , wherein the second pivot plate includes a plurality of second protruding surfaces.

15. The first protruding surfaces are spaced apart in a first direction on one side of the first pivot plate, The camera actuator of claim 14 , wherein the second protruding surfaces are spaced apart on one side of the second pivot plate in a second direction perpendicular to the first direction.

16. the first protruding surfaces protrude toward the prism unit on one surface of the first pivot plate, The camera actuator according to claim 14 or 15, wherein the plurality of second protruding surfaces protrude towards the prism unit on one surface of the second pivot plate.

17. the prism unit includes a first recess in which the pulling magnet is accommodated and a plurality of second recesses in which the plurality of second protruding surfaces are accommodated; 17. A camera actuator according to claim 14, wherein the first recess is located in a central region between the second recesses.

18. An optical sensor; a first camera actuator and a second camera actuator for changing a path of light incident from outside and providing the light to the optical sensor; The second camera actuator is Housing and a prism unit disposed within the housing; A drive unit that tilts the prism unit; a first pivot plate disposed on a side wall of the housing; a second pivot plate disposed between the first pivot plate and the prism unit; The prism unit includes a pulling magnet, the prism unit tilts about a rotation reference axis of the first pivot or the second pivot plate while being supported by the housing by an attractive force between the pulling magnet and the first pivot plate; The first pivot plate or the second pivot plate includes one surface and another surface opposite to the one surface, the rotation reference axis is integrally formed with the first pivot plate or the second pivot plate, and is a convex surface provided on the one surface of the first pivot plate or the second pivot plate, A camera apparatus, wherein the other surface of the first pivot plate or the second pivot plate has a concave surface corresponding to the convex surface.

19. The second camera actuator changes a path of light incident from an outside and provides the path of the light to the first camera actuator; The camera apparatus of claim 18 , wherein light passing through the first camera actuator is provided to the optical sensor.

20. The first camera actuator includes: With the base, A rail guide portion coupled to the base; a first lens assembly fixedly coupled to the base; 20. The camera apparatus of claim 18 or 19, further comprising second and third lens assemblies disposed within the base and adapted to move along the rail guide portions.

Images