Imaging device actuator

Abstract

The invention provides an imaging apparatus actuator. The imaging apparatus actuator includes: a housing; a first lens assembly and a second lens assembly disposed in the housing and configured to move in a first direction parallel to the optical axis direction; a first driving portion disposed at a first side of the housing and configured to drive the first lens assembly; and a second driving portion disposed at a second side of the housing and configured to drive the second lens assembly, in which: the first driving portion includes a first magnet disposed at the first lens assembly and a first coil facing the first magnet; a second driving portion including a second magnet disposed at the second lens assembly and a second coil facing the second magnet; the length of the first coil in the first direction is larger than the length of the first magnet in the first direction and smaller than the length of the second coil in the first direction.

Description

Technical Field

[0001] The present invention relates to an actuator for a camera device. Background Art

[0002] A camera is a device that captures images or videos of a subject and is mounted on any portable device, drone, vehicle, etc.

[0003] In order to improve the quality of the image, the camera device or the camera module has an image stabilization (IS) function for correcting or preventing shaking caused by the user's movement, an auto focus (AF) function for adjusting the focal length of the lens by automatically adjusting the distance between the image sensor and the lens, and a zoom function for increasing or decreasing the magnification of a distant subject and capturing an image of the subject using a zoom lens.

[0004] When the camera performs the various functions described above, each lens assembly housed in the camera actuator moves along the optical axis direction by interaction between the coil and the magnet, and there may be differences between the movable distances of the lens assemblies depending on the functions performed by the lens assemblies.

[0005] In addition, a plurality of lens groups arranged sequentially in the optical axis direction may include a movable movable lens group and a fixed fixed lens group, and when the movable lens group moves along the optical axis direction to perform zooming or AF functions, etc., in the event that the movable lens group collides with the fixed lens group, the fixed lens group and the movable lens group may be damaged.

[0006] Therefore, there is a need for a technology for preventing damage to the lens group due to a collision between the fixed lens group and the moving lens group and realizing a compact image pickup device actuator according to the difference between the moving distances. Summary of the invention

[0007] Technical issues

[0008] The present invention is directed to solving the above-described conventional problems, and to preventing space waste, overheating, and damage due to collision between lens groups.

[0009] The objects to be solved by the present invention are not limited thereto, and other objects not mentioned above can be clearly understood by those skilled in the art from the following description.

[0010] Technical Solutions

[0011] In order to achieve the purpose described above, one aspect of the present invention provides a camera device actuator, which includes: a housing; a first lens assembly and a second lens assembly, which are arranged inside the housing and move along a first direction parallel to the optical axis direction; a first driver, which is arranged at a first side of the housing and drives the first lens assembly; and a second driver, which is arranged at a second side of the housing and drives the second lens assembly, wherein the first driver includes a first magnet arranged on the first lens assembly and a first coil facing the first magnet, the second driver includes a second magnet arranged on the second lens assembly and a second coil facing the second magnet, and the length of the first coil in the first direction is greater than the length of the first magnet in the first direction and less than the length of the second coil in the first direction.

[0012] In this case, the camera actuator may include a controller disposed spaced apart from the first coil in a first direction, wherein the controller may overlap the first coil in the first direction and overlap the second coil in a second direction from the first side toward the second side.

[0013] Furthermore, the second magnet may be longer than the first magnet in the first direction, and the center of the first coil and the center of the second coil may be disposed so as not to be aligned.

[0014] Furthermore, the first coil and the second coil may be arranged to be longer than the second magnet in the first direction.

[0015] Meanwhile, the first lens assembly may include a first lens group and a first extension portion surrounding the first lens group and extending toward the first driver, and the second lens assembly may include a second lens group and a second extension portion surrounding the second lens group and extending toward the second driver.

[0016] Furthermore, the first extension may include a first recessed space recessed in the second side, the first magnet may be disposed in the first recessed space, the second extension may include a second recessed space recessed in the first side, and the second magnet may be disposed in the second recessed space.

[0017] In this case, the first driver may also include a first track arranged between the first extension part and the first coil and a first ball unit arranged between the first track and the first extension part, and the second driver may also include a second track arranged between the second extension part and the second coil and a second ball unit arranged between the second track and the second extension part, and the number of the second ball units may be greater than the number of the first ball units.

[0018] Meanwhile, the second lens assembly may be disposed longer than the first lens assembly in the first direction, and may have a driving distance longer than a driving distance of the first lens assembly in the first direction.

[0019] Furthermore, the first coil may include a first coil unit and a second coil unit disposed to be spaced apart from each other in the first direction, and the second coil may include a third coil unit and a fourth coil unit disposed to be spaced apart from each other in the first direction.

[0020] Furthermore, a first center point of a spacing area between the first coil unit and the second coil unit and a second center point of a spacing area between the third coil unit and the fourth coil unit may be disposed to be misaligned in the first direction.

[0021] In this case, each of the first coil unit and the second coil unit may be formed to be shorter than each of the third coil unit and the fourth coil unit in the first direction.

[0022] Meanwhile, the housing may include a first substrate, a second substrate and a third substrate, the first coil and the controller may be disposed on the first substrate, the second coil may be disposed on the second substrate, and the first substrate and the second substrate may be connected through the third substrate.

[0023] Furthermore, the housing may include a first stopper facing the first lens assembly in the first direction and a second stopper facing the second lens assembly in the second direction, and the first stopper may be disposed above the second stopper in the first direction.

[0024] At the same time, another aspect of the present invention provides a camera device actuator, which includes: a housing; a first lens assembly and a second lens assembly, which are arranged in the housing and move in a first direction along the optical axis; a first substrate, which is arranged at a first side of the housing; a second substrate, which is arranged at a second side of the housing and faces the first substrate in a second direction perpendicular to the first direction; a first coil, which is arranged on the first substrate and drives the first lens assembly; a second coil, which is arranged on the second substrate and drives the second lens assembly; and a controller, which is arranged on the first substrate and is spaced apart from the first coil in the first direction, wherein the controller overlaps with the second coil and the second substrate in the second direction.

[0025] In this case, the camera actuator may include a third substrate electrically connecting the first substrate and the second substrate, and the first coil may be electrically connected to the controller through the first substrate, and the second coil may be electrically connected to the controller through the second substrate and the third substrate.

[0026] In addition, a length of the first substrate in the first direction may be greater than a sum of a length of the first coil in the first direction and a length of the controller in the first direction.

[0027] Furthermore, the second coil may include a hollow portion therein, and the hollow portion may overlap with the controller in the second direction.

[0028] Meanwhile, the first coil may include a first coil unit and a second coil unit spaced apart from each other in the first direction, and the first magnet may overlap at least one of the first coil unit and the second coil unit in the second direction.

[0029] In this case, the first magnet may not overlap with the controller in the second direction.

[0030] At the same time, another aspect of the present invention provides a camera device actuator, which includes: a housing; a first lens assembly, which is arranged on the housing; a second lens assembly and a third lens assembly, which are arranged in the housing in sequence; a cover base, which is arranged between the first lens assembly and the second lens assembly and accommodates the first lens assembly; a first driver, which drives the second lens assembly along the optical axis direction; and a second driver, which drives the third lens assembly along the optical axis direction.

[0031] In this case, the cover base may be disposed between the first lens assembly and the housing, and a first surface of the cover base facing the second lens assembly may be spaced apart from the housing.

[0032] In addition, the first surface may include a protrusion having a portion thereof protruding toward the second lens assembly and an extension extending from the protrusion along a second direction perpendicular to the first direction (which is parallel to the optical axis direction), and the bottom surfaces of the protrusion and the extension facing the second lens assembly may be configured to have an inclination angle.

[0033] In addition, the cover base may include: a second surface extending from the extension portion in a direction away from the second lens assembly to be spaced apart from the housing; an inclined portion extending obliquely from the extension portion; and a side surface portion extending from an end portion of the inclined portion to be parallel to the first direction.

[0034] Meanwhile, the cover base may include a recessed portion into which the first lens assembly is inserted and a first wing extending in a second direction perpendicular to the first direction (which is parallel to the optical axis direction).

[0035] In this case, the first lens assembly may include a second wing extending in the second direction, and a length of the second wing in the second direction may be smaller than a length of the first wing in the second direction.

[0036] Furthermore, an inner surface of the recessed portion may be disposed in contact with the first lens assembly, and a lower portion of the recessed portion may be spaced apart from the first lens assembly in the optical axis direction.

[0037] Meanwhile, the cover base may include a third stopper facing the second lens assembly in a first direction parallel to the optical axis direction and a fourth stopper facing the third lens assembly in the first direction.

[0038] In this case, a lowermost end of the third stopper in the first direction may be disposed closer to the first lens assembly than a lowermost end of the fourth stopper in the first direction.

[0039] Beneficial Effects

[0040] The image pickup device actuator according to the embodiment of the present invention for solving the above-described object may generate a difference between the lengths of the first coil and the second coil according to a difference between driving distances of moving the lens assembly.

[0041] In this case, since the controller is disposed in the space formed due to the difference in length, heat generated by the controller can be effectively dissipated, and the image pickup device actuator can be miniaturized.

[0042] Furthermore, there is an effect of preventing damage to the first lens group or the second lens group due to collision between the first lens group of the fixed first lens assembly and the second lens group of the second lens assembly.

[0043] The effects of the present invention are not limited to the effects described above, and other effects not mentioned above will be clearly understood by those skilled in the art from the appended claims.

[0044] Furthermore, the effects of the present invention may be described in detail in the specific embodiments of the present invention, and are not necessarily limited to the effects described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The detailed description of exemplary embodiments of the present application, which will be described below, and the above overview may be more readily understood with reference to the accompanying drawings.

[0046] For the purpose of illustrating the invention, exemplary embodiments are shown in the drawings.

[0047] It should be understood, however, that the application is not limited to the precise arrangements and instrumentalities shown.

[0048] Figure 1 It is a view for describing the overall description of an image pickup device actuator according to one embodiment of the present invention.

[0049] Figure 2 1 is a view for describing the arrangement of components of an image pickup device actuator according to an embodiment of the present invention.

[0050] Figure 3 1 is a diagram for describing the overall components of an image pickup device actuator according to an embodiment of the present invention.

[0051] Figure 4 1 is a diagram for describing the difference between the lengths of the components of the image pickup device actuator according to one embodiment of the present invention.

[0052] Figure 5 1 is a view for describing a second lens assembly of an image pickup device actuator according to an embodiment of the present invention.

[0053] Figure 6 1 is a view for describing a third lens assembly of the image pickup device actuator according to an embodiment of the present invention.

[0054] Figure 7 1 is a view for describing a first rail and a first ball of an image pickup device actuator according to an embodiment of the present invention.

[0055] Figure 8 1 is a view for describing in more detail a first rail of the image pickup device actuator according to one embodiment of the present invention.

[0056] Fig. 9 1 is a view for describing a second rail and a second ball of the image pickup device actuator according to an embodiment of the present invention.

[0057] Fig.10 1 is a view for describing in more detail the second rail of the camera device actuator according to one embodiment of the present invention.

[0058] Fig.11 1 is a view for describing a first substrate, a second substrate, and a third substrate of an image pickup device actuator according to an embodiment of the present invention.

[0059] Fig.12 1 is a view for describing a first hall sensor of an image pickup device actuator according to an embodiment of the present invention.

[0060] Fig.13 1 is a view for describing a second hall sensor of the image pickup device actuator according to an embodiment of the present invention.

[0061] Fig.14 1 is a view for describing a difference between a center between a first magnet and a second magnet and a center between a first coil and a second coil of an image pickup device actuator according to an embodiment of the present invention.

[0062] Fig.15 It is a view for describing a cover base of an image pickup device actuator according to an embodiment of the present invention.

[0063] Fig.161 is a view for describing a first surface of an image pickup device actuator according to an embodiment of the present invention.

[0064] Fig.17 1 is a view for describing a separation space between a protrusion and a housing of an image pickup device actuator according to an embodiment of the present invention.

[0065] Fig.18 1 and 2 are views for describing the separated shapes of the protrusion and the extended portion of the image pickup device actuator according to one embodiment of the present invention.

[0066] Fig.19 1 is a view for describing a first stopper and a second stopper of an image pickup device actuator according to an embodiment of the present invention.

[0067] Fig. 20 1 is a view for describing a third surface of the image pickup device actuator according to one embodiment of the present invention.

[0068] Fig.21 1 is a view for describing a step portion of an image pickup device actuator according to an embodiment of the present invention. DETAILED DESCRIPTION

[0069] Since the present invention can be variously modified and has multiple embodiments, specific embodiments will be shown in the drawings and described in detail. However, this is not intended to limit the present invention to specific embodiments, and it should be recognized that all changes, equivalents and alternatives falling within the spirit and technical scope of the present invention are included in the present invention. In the description of the embodiments, when it is considered that some detailed descriptions of the related art may unnecessarily obscure the main points of the present invention, they will be omitted.

[0070] Terms such as "first" and "second" may be used to describe various components, but the components are not limited by the above terms. These terms are only used to distinguish one component from another component.

[0071] The terms used in this article are only used for the purpose of describing specific embodiments and are not intended to limit the present invention. Unless the context clearly indicates otherwise, the singular form is intended to include the plural form. In this specification, it should be understood that the terms "comprise", "comprising", "include" and / or "including" used in this article specify the presence of the features, quantities, steps, operations, elements, parts and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, steps, operations, elements, parts and / or combinations thereof.

[0072] Furthermore, throughout the specification, when components are “connected,” this may not only mean that two or more components are directly connected, but it may also mean that two or more components are indirectly connected through other components, or are physically connected and also electrically connected, or that the same thing may be called by different names even according to its position or function.

[0073] Furthermore, when a first component is described as being formed or disposed “on” or “under” a second component, such description includes both a case where the two components are formed or disposed in direct contact with each other and a case where one or more other components are interposed between the two components. Furthermore, when a first component is described as being formed “on or under” a second component, such description may include a case where the first component is formed at the upper side or the lower side relative to the second component.

[0074] Hereinafter, exemplary embodiments of the present invention, which can specifically achieve the objects of the present invention, will be described with reference to the accompanying drawings.

[0075] First, refer to Figures 1 to 11 The overall description of the present invention is given.

[0076] Specifically, Figure 1 is a view for describing an overall description of an image pickup device actuator according to an embodiment of the present invention, and Figure 2 1 is a view for describing the arrangement of components of an image pickup device actuator according to an embodiment of the present invention. Figure 3 is a view for describing the overall components of an image pickup device actuator according to an embodiment of the present invention, and Figure 4 1 is a diagram for describing the difference between the lengths of the components of the image pickup device actuator according to one embodiment of the present invention. Figure 5 is a view for describing a second lens assembly of an image pickup device actuator according to an embodiment of the present invention, and Figure 6 1 is a view for describing a third lens assembly of the image pickup device actuator according to an embodiment of the present invention. Figure 7 is a view for describing a first rail and a first ball of a camera device actuator according to an embodiment of the present invention, and Figure 8 1 is a view for describing in more detail a first rail of the image pickup device actuator according to one embodiment of the present invention. Fig. 9 is a view for describing a second rail and a second ball of a camera device actuator according to an embodiment of the present invention, and Fig.10 1 is a view for describing in more detail the second rail of the camera device actuator according to one embodiment of the present invention. Fig.111 is a view for describing a first substrate, a second substrate, and a third substrate of an image pickup device actuator according to an embodiment of the present invention.

[0077] First, if Figure 1 As shown in , a camera device actuator according to one embodiment of the present invention includes a housing 100, a second lens assembly 300 and a third lens assembly 400, and a first lens assembly 200, wherein the second lens assembly and the third lens assembly are arranged inside the housing 100 and move in a first direction along the optical axis, and the first lens assembly is arranged on the housing 100 in the optical axis direction, that is, arranged to be relatively close to the object in the direction from the object toward the second lens assembly 300.

[0078] In this case, the housing 100 may form an external appearance of the camera actuator, and the first lens assembly 200 , the second lens assembly 300 , and the third lens assembly 400 may be sequentially disposed in the first direction.

[0079] In addition, based on Figure 1 , the first lens assembly 200 may be disposed on an upper portion of the housing 100 , and the second lens assembly 300 and the third lens assembly 400 may be disposed inside the housing 100 .

[0080] Reference Figure 2 For a more detailed description, such as Figure 2 As shown in , the first lens assembly 200 , the second lens assembly 300 , and the third lens assembly 400 may be sequentially arranged in the first direction.

[0081] The cover base 500 may be disposed between the first lens assembly 200 and the second lens assembly 300 .

[0082] In this case, the first lens assembly 200 may be mounted in the cover base 500, a separate adhesive member may be provided, and the adhesive member may be epoxy resin.

[0083] In this case, the epoxy resin is mentioned as an example of the adhesive member only to help understanding, but the present invention is not limited thereto, and the cover base 500 will be described in more detail with reference to the accompanying drawings.

[0084] Meanwhile, based on the first direction parallel to the optical axis direction, the first driver 320 and the second driver 420 may be disposed in a direction perpendicular to the first direction.

[0085] In this case, the first driver 320 and the second driver 420 are disposed in the second direction with the second lens assembly 300 and the third lens assembly 400 interposed therebetween, and the first driver 320 and the second driver 420 will be described in detail with reference to the accompanying drawings.

[0086] At the same time, if Figure 3 As shown in , the second lens assembly 300 may include a second lens group 310 and a first body 350 surrounding the second lens group 310 and extending toward the first side, and the third lens assembly 400 may include a third lens group 410 and a second body 450 surrounding the third lens group 410 and extending toward the second side.

[0087] In this case, the first side and the second side may be a side surface and another side surface based on the shell 100 in a second direction perpendicular to the first direction (which is parallel to the optical axis direction), the second direction may be a direction toward the two side surfaces of the shell 100, the first direction may be a height direction of the shell 100, and a third direction perpendicular to the second direction and the first direction may be a direction toward the front surface and the rear surface of the shell 100.

[0088] That is, the first direction may be parallel to the optical axis direction, or may be the optical axis direction, and the second direction may include two directions from the first side toward the second side and from the second side toward the first side based on the shell 100, and the third direction may refer to two directions from the front surface toward the rear surface and from the rear surface toward the rear surface based on the shell 100.

[0089] This will be more clearly understood not only by the first direction, the second direction, and the third direction shown in the drawings but also by the first side and the second side shown in the drawings.

[0090] In this case, the first body 350 and the second body 450 will be described in more detail with reference to the accompanying drawings.

[0091] At the same time, in addition to the first lens assembly 200, the housing 100, the second lens assembly 300 and the third lens assembly 400, the camera device actuator according to an embodiment of the present invention also includes: a first driver 320, which is arranged at the first side of the housing 100 and drives the second lens assembly 300; a second driver 420, which is arranged at the second side of the housing 100 and drives the third lens assembly 400; and a controller 600, which controls the first driver 320 and the second driver 420.

[0092] In this case, the first driver 320 may be disposed at the first side and may include a first magnet M1 and first coils 321 and 322 to drive the second lens assembly 300 through electromagnetic interaction at the first side.

[0093] That is, when current flows in the first coils 321 and 322 , electromagnetic interaction occurs with the first magnet M1 , so that the second lens assembly 300 may move in the first direction.

[0094] In addition, the second driver 420 may be disposed at the second side and may include a second magnet M2 and second coils 421 and 422 to drive the third lens assembly 400 through electromagnetic interaction at the second side.

[0095] That is, when current flows in the second coils 421 and 422 , electromagnetic interaction occurs with the second magnet M2 , so that the third lens assembly 400 can move in the first direction.

[0096] In this case, the first magnet M1 may be disposed between the first coils 321 and 322 and the first body 350 , and the second magnet M2 may be disposed between the second coils 421 and 422 and the second body 450 .

[0097] In this case, if Figure 3 and Figure 4 As shown in FIG, a length L3 of the first coils 321 and 322 in the first direction may be greater than a length L1 of the first magnet M1 in the first direction, and may be less than a length L4 of the second coils 421 and 422 in the first direction.

[0098] That is, based on the first direction, the length L3 of the first coils 321 and 322 may be smaller than the length L4 of the second coils 421 and 422, the length L1 of the first magnet M1 may be smaller than the length L2 of the second magnet M2, the length L3 of the first coils 321 and 322 may be greater than the length L1 of the first magnet M1, and the length L4 of the second coils 421 and 422 may be greater than the length L2 of the second magnet M2.

[0099] In this case, the reason why the first coils 321 and 322 are formed shorter than the second coils 421 and 422 in the first direction may be because a driving distance of the third lens assembly 400 is relatively smaller than a driving distance of the second lens assembly 300 .

[0100] In this case, the first coils 321 and 322 disposed at the first side may be divided into the first coil unit 321 and the second coil unit 322 , and the first coil unit 321 and the second coil unit 322 may be disposed spaced apart from each other in the first direction.

[0101] In addition, the second coils 421 and 422 disposed at the second side may be divided into a third coil unit 421 and a fourth coil unit 422 , and the third coil unit 421 and the fourth coil unit 422 may be disposed spaced apart from each other in the first direction.

[0102] In this case, a length L5 of the first coil unit 321 in the first direction may be smaller than a length L7 of the third coil unit 421 in the first direction and a length L8 of the third coil unit 421 in the first direction.

[0103] Similarly, a length L6 of the second coil unit 322 in the first direction may be smaller than a length L7 of the third coil unit 421 in the first direction and a length L8 of the fourth coil unit 422 in the first direction.

[0104] In this case, the first coil unit 321 may have a first hollow portion 321a defined by its inner diameter, the second coil unit 322 may have a second hollow portion 322a defined by its inner diameter, the third coil unit 421 may have a third hollow portion 421a defined by its inner diameter, and the fourth coil may have a fourth hollow portion 422a defined by its inner diameter.

[0105] In this case, similar to the relationship between the first coils 321 and 322 and the second coils 421 and 422, the length L9 of the first hollow portion 321a may be relatively smaller than the length L11 of the third hollow portion 421a and the length L12 of the fourth hollow portion 422a in the first direction.

[0106] In addition, based on the first direction, a length L10 of the second hollowness 322 a may be relatively smaller than a length L11 of the third hollowness 421 a and a length L12 of the fourth hollowness 422 a in the first direction.

[0107] In this case, similar to the relationship between the first coils 321 and 322 and the second coils 421 and 422 , the first hollowness 321 a may be formed to be relatively shorter than the third hollowness 421 a and the fourth hollowness 422 a in the first direction.

[0108] In addition, the second hollowness 322 a may be formed to be relatively shorter than the third hollowness 421 a and the fourth hollowness 422 a in the first direction.

[0109] In this case, in the first direction, although the uppermost end of the first hollowness 321a may be positioned collinear with the uppermost end of the third hollowness 421a, the lowermost end of the first hollowness 321a may be disposed above the lowermost end of the third hollowness 421a in the first direction.

[0110] Meanwhile, the controller 600 may be disposed to overlap the first coils 321 and 322 in a first direction, and to overlap the second coils 421 and 422 in a second direction from the first side toward the second side.

[0111] More specifically, the controller 600 may overlap the first coil unit 321 and the second coil unit 322 in the first direction, and overlap the fourth hollowness 422 a in the second direction.

[0112] In other words, although the controller 600 overlaps with the first coil unit 321 and the second coil unit 322 in the first direction, the controller 600 may not overlap with the first coil unit 321 and the second coil unit 322 in the second direction, and the controller 600 may not be disposed in the first hollow portion 321a, the second hollow portion 322a, the third hollow portion 421a and the fourth hollow portion 422a, but may be disposed outside the first coil unit 321 and the second coil unit 322.

[0113] That is, the controller 600 may be disposed inside the housing 100 to be distinguished from the first coils 321 and 322 , and a space where the controller 600 is located may include an opening H that opens in a direction from the first side toward the second side in the second direction.

[0114] In addition, the opening H may be formed as a plurality of openings H in a third direction perpendicular to the first direction and the second direction.

[0115] In this case, a sum of a length L3 of the first coils 321 and 322 in the first direction and a length L13 of the controller 600 in the first direction may be smaller than a length L4 of the second coils 421 and 422 in the first direction.

[0116] More specifically, the controller 600 may be disposed to be distinguished from the first coil unit 321 and the second coil unit 322 in the first direction and disposed at a relatively long distance from the first lens assembly 200 .

[0117] Therefore, unlike the conventional situation in which the controller 600 is set in the first hollow portion 321a or the second hollow portion 322a, since the controller 600 is set to be separated from the first coil unit 321 and the second coil unit 322, the influence of the electromagnetic field generated by the first coil unit 321 and the second coil unit 322 and the magnetic field generated by the first magnet M1 can be minimized.

[0118] Therefore, the amount of heat applied to the controller 600 can be effectively reduced.

[0119] In addition, a first stopper 580 facing the second lens assembly 300 in the first direction may also be disposed inside the housing 100 to prevent the second lens assembly 300 from colliding with the housing 100 and the first lens assembly 200 or the third lens assembly 400 when the second lens assembly 300 moves.

[0120] In addition, the housing 100 may further include a second stopper 590 facing the third lens assembly 400 in the first direction to prevent the third lens assembly 400 from colliding with the housing 100 and the second lens assembly 300 when the third lens assembly 400 moves.

[0121] In this case, the first stopper 580 is disposed to face the second lens assembly 300 in the first direction, and may be disposed to face the first body 350 and be disposed above the opening H.

[0122] That is, since the first stopper 580 is disposed above the opening H in the first direction, a height of an upper surface of the first stopper 580 in the first direction may be different from a height of an upper surface of the second stopper 590 in the first direction.

[0123] At the same time, refer to Figure 5 To describe the second lens assembly 300 in more detail, Figure 5 As shown in , the second lens assembly 300 may include the second lens group 310 and the first body 350 as described above, and the second lens assembly 300 may be driven by the first driver 320 .

[0124] In this case, the second lens assembly 300 may include the second lens group 310 and the first body 350 as described above, and in the second lens assembly 300 , the first magnet M1 may be disposed between the first body 350 and the first coils 321 and 322 .

[0125] In this case, the first body 350 may include a first grip portion formed in a shape surrounding the second lens group 310 .

[0126] In this case, the first grip portion and the first body 350 may be a lens barrel of the second lens assembly 300 .

[0127] In addition, the first body 350 may extend from the second lens group 310 (that is, the first grip) toward the first coils 321 and 322 to increase its width, and may extend downward from the second lens group 310 to be relatively inclined toward the first coils 321 and 322 .

[0128] In addition, a first concave space 351 concave from the first side toward the second side may be provided in the first body 350 so that the first magnet M1 is disposed therein.

[0129] In this case, a first step 352 may be formed above the first body 350 and the first magnet M1 to prevent the second lens group 310 from colliding with the first lens assembly 200 when the second lens group 310 moves in the first direction.

[0130] In this case, the first step 352 may protrude relatively more upward than the second lens group 310 in the first direction to prevent the second lens group 310 from being damaged due to a collision between the first lens assembly 200 and the second lens group 310 .

[0131] In addition, the first hall sensor 340 may be disposed in the first hollowness 321 a of the first coil unit 321 , and the second lens assembly 300 may overlap the first hall sensor 340 in the second direction when the second lens assembly 300 moves in the first direction.

[0132] At the same time, if Figure 6 As shown in , the third lens assembly 400 may include a third lens group 410 and a second body 450 that surrounds the third lens group 410 and extends toward the second driver 420 .

[0133] In addition, similar to the first body 350, the second body 450 may include a second holding portion surrounding the third lens group 410, the second body 450 may extend from the second holding portion toward the second driver 420, and the upper side of the second body 450 may extend relatively long and inclined in the first direction.

[0134] In this case, similar to the first grip and the first body 350 described above, the second grip and the second body 450 may be a lens barrel of the third lens assembly 400 .

[0135] In addition, a second concave space 451 concave in the first side may be formed in the second body 450 , and the second magnet M2 may be located in the second concave space 451 .

[0136] Therefore, the second magnet M2 may be located between the second coils 421 and 422 and the second body 450 in the second direction.

[0137] In this case, a second step 452 may be formed above the second body 450 and the second magnet M2 to prevent the third lens group 410 from colliding with the second lens assembly 300 when the third lens group 410 moves in the first direction.

[0138] In this case, the bottom surface of the second body 450 in the direction opposite to the second step 452 can contact the second stopper 590 to prevent collision with the bottom surface of the housing 100, and the second step 452 can contact the fourth stopper 570 facing the second stopper 590 in the first direction to prevent collision with the second lens assembly 300.

[0139] In this case, the fourth stopper 570 will be described in more detail with reference to the accompanying drawings.

[0140] In addition, the second hall sensor 440 may be disposed in the fourth hollowness 422 a of the fourth coil unit 422 , and the third lens assembly 400 may overlap the second hall sensor 440 in the second direction as the third lens assembly 400 moves in the first direction.

[0141] Meanwhile, the first driver 320 may include first rails 331 and 332, and this will refer to Figure 7 Give a description.

[0142] First, if Figure 7 As shown in FIG. 1 , the first driver 320 may include first rails 331 and 332 and first balls 341 and 342 disposed between the first body 350 and the first rails 331 and 332 .

[0143] More specifically, the first rails 331 and 332 may include a first rail unit 331 and a second rail unit 332 , and the first rail unit 331 and the second rail unit 332 may be spaced apart from each other in the third direction.

[0144] In addition, the first balls 341 and 342 may include a first ball unit 341 and a second ball unit 342 , and in the second direction, the first rail unit 331 and the first ball unit 341 may overlap, and the second rail unit 332 and the second ball unit 342 may overlap.

[0145] In this case, the first magnet M1 may be disposed between the first ball unit 341 and the second ball unit 342 in the third direction, and the first ball unit 341 and the second ball unit 342 may minimize friction when the second lens assembly 300 moves.

[0146] In addition, the first ball unit 341 and the second ball unit 342 enable the first coils 321 and 322 and the first magnet M1 to be spaced apart by a predetermined distance to prevent friction and contact when the first coils 321 and 322 and the first magnet M1 contact each other.

[0147] In this case, the first ball unit 341 may include first and second ball members 341a and 341b spaced apart from each other in the first direction, the first ball member 341a may be arranged as a plurality of first ball members 341a in the first direction, and the second ball member 341b may be arranged as a plurality of second ball members 341b in the first direction.

[0148] In addition, similar to the first ball unit 341, the second ball unit 342 may include a third ball member 342a and a fourth ball member 342b spaced apart from each other in the first direction, and the third ball member 342a and the fourth ball member 342b may be arranged as a plurality of third ball members 342a and a plurality of fourth ball members 342b in the first direction.

[0149] More specifically, if Figure 8 As shown in FIG. 1 , when viewed from above, the first magnet M1 may be disposed between the first coils 321 and 322 and the first body 350 and between the first ball unit 341 and the second ball unit 342 .

[0150] In addition, the first rail unit 331 may be in point contact with the first ball unit 341 at one point, and the second ball unit 342 may be in point contact with the second rail unit 332 at two or more points or may be in surface contact with the second rail unit 332 .

[0151] At the same time, if Fig. 9 As shown in , similar to the first driver 320 , the second driver 420 may include second rails 431 and 432 and second balls 441 and 442 , and the second rails 431 and 432 may include a third rail unit 431 and a fourth rail unit 432 .

[0152] In addition, the third rail unit 431 and the fourth rail unit 432 may be spaced apart from each other in the third direction, and the second magnet M2 may be disposed between the third rail unit 431 and the fourth rail unit 432 .

[0153] In addition, the second balls 441 and 442 may include a third ball unit 441 disposed to correspond to the third rail unit 431 and a fourth ball unit 442 disposed to correspond to the fourth rail unit 432 .

[0154] In this case, the third ball unit 441 may include a plurality of fifth ball members 441a disposed relatively adjacent to the first lens assembly 200 in the first direction and a plurality of sixth ball members 441b spaced apart from the fifth ball members 441a.

[0155] That is, similar to the first magnet M1 , in the third direction, the second magnet M2 may be disposed between the third rail unit 431 and the fourth rail unit 432 , and the second magnet M2 may be disposed between the third ball unit 441 and the fourth ball unit 442 .

[0156] In addition, the fourth ball unit 442 may include a plurality of seventh ball members 442a disposed relatively adjacent to the first lens assembly 200 in the first direction and a plurality of eighth ball members 442b spaced apart from the seventh ball members 442a in the first direction.

[0157] In this case, the first ball unit 341 may be a group of a plurality of first ball members 341 a and a plurality of second ball members 341 b , and the second ball unit 342 may be a group of a plurality of third ball members 342 a and a plurality of fourth ball members 342 b .

[0158] In addition, the third ball unit 441 may be a group of a plurality of fifth ball members 441 a and a plurality of sixth ball members 441 b , and the fourth ball unit 442 may be a group of a plurality of seventh ball members 442 a and a plurality of eighth ball members 442 b .

[0159] This is individually named to help understanding when describing the forms distinguished in the first direction, and this may be a common name for a group of each of the plurality of first ball units 341 , the plurality of second ball units 342 , the plurality of third ball units 441 , and the plurality of fourth ball units 442 .

[0160] Furthermore, in the example of the first ball unit 341, when the number of the first ball units 341 or the plurality of first ball units 341 is mentioned, it may be understood as the total number of the first ball members 341a and the second ball members 341b.

[0161] Meanwhile, the third ball unit 441 and the fourth ball unit 442 may be disposed to be relatively longer than the first ball unit 341 and the second ball unit 342 , respectively, in the first direction.

[0162] Specifically, the number of each of the first ball units 341 and the second ball units 342 may be set to be relatively less than the number of each of the third ball units 441 and the fourth ball units 442 .

[0163] In addition, since the first and second ball units 341 and 342 are disposed between the first body 350 and the first rails 331 and 332, and the third and fourth ball units 441 and 442 are disposed between the second body 450 and the second rails 431 and 432, the second body 450 may be relatively longer than the first body 350 in the first direction.

[0164] In addition, if Fig.10 As shown in , the third ball unit 441 may be in point contact with the third rail unit 431, and the fourth ball unit 442 may be in point contact with the fourth rail unit 432 at two or more points or in surface contact with the fourth rail unit 432.

[0165] At the same time, if Fig.11As shown in , embodiments of the present invention may include a first substrate 710 , a second substrate 720 , and a third substrate 730 .

[0166] In this case, the first driver 320 driving the second lens assembly 300 , particularly the first coils 321 and 322 , and the controller 600 may be disposed on the first substrate 710 .

[0167] In addition, the second driver 420 driving the third lens assembly 400 , particularly the second coils 421 and 422 , may be disposed on the second substrate 720 , and the first substrate 710 and the second substrate 720 may be connected through the third substrate 730 .

[0168] In this case, each of the first substrate 710 and the second substrate 720 may be formed in a shape to be inserted into the housing 100 , and a slit into which the first substrate 710 and the second substrate 720 are inserted may be formed in the housing 100 .

[0169] In this case, the first substrate 710 and the second substrate 720 may be disposed inside the housing 100 through the slits.

[0170] In addition, the third substrate 730 can surround the outside of the shell 100 in the second direction and extend from the first substrate 710 toward the second substrate 720 to connect the first substrate 710 and the second substrate 720, and the signal of the controller 600 can be transmitted to the second coils 421 and 422 through the third substrate 730.

[0171] At the same time, reference will be made to Figure 12 to Figure 14 The arrangement relationship of the above-described image pickup device actuators according to the embodiment of the present invention is described.

[0172] Specifically, Fig.12 is a view for describing a first Hall sensor of an image pickup device actuator according to an embodiment of the present invention, Fig.13 is a view for describing a second Hall sensor of an image pickup device actuator according to an embodiment of the present invention, and Fig.14 1 is a view for describing a difference between a center between a first magnet and a second magnet and a center between a first coil and a second coil of an image pickup device actuator according to an embodiment of the present invention.

[0173] First, if Fig.12 As shown in FIG. 7 , the first coils 321 and 322 may include a first coil unit 321 and a second coil unit 322 , and the controller 600 may be disposed on the first substrate 710 to be separated from the first coils 321 and 322 .

[0174] In this case, a first hollow portion 321 a defined by an inner diameter may be formed in the first coil unit 321 , a second hollow portion 322 a defined by an inner diameter may be formed in the second coil unit 322 , and the first hall sensor 340 may be disposed in the first hollow portion 321 a .

[0175] This may be because the second lens assembly 300 moves between the first lens assembly 200 and the third lens assembly 400 as described above.

[0176] In addition, in the first coils 321 and 322, since the controller 600 is arranged below the first coils 321 and 322 in the first direction, more specifically, at a position where the controller 600 overlaps with the fourth hollow portion 422a in the second direction, the uppermost surface of the first coils 321 and 322 in the first direction can be colinear with the uppermost surface of the second coils 421 and 422 in the first direction.

[0177] At the same time, if Fig.13 As shown in , the second hall sensor 440 may be disposed in the fourth hollow portion 422 a of the fourth coil unit 422 , and this may be because the third lens assembly 400 may be relatively located below the second lens assembly 300 in the first direction.

[0178] That is to say, Fig.14 As shown in FIG. 1 , the first hall sensor 340 and the second hall sensor 440 may be disposed so as not to overlap each other in the second direction.

[0179] Meanwhile, when the center point of the interval between the first coil unit 321 and the second coil unit 322 is defined as the first center point P1, and the center point of the interval between the third coil unit 421 and the fourth coil unit 422 is defined as the second center point P2, as shown in FIG. Fig.14 As shown in FIG. 1 , the first center point P1 and the second center point P2 may be arranged to be misaligned in the first direction.

[0180] This may be because the length L3 of the first coils 321 and 322 in the first direction is relatively smaller than the length L4 of the second coils 421 and 422 in the first direction, and the uppermost end surfaces of the first coils 321 and 322 and the second coils 421 and 422 in the first direction are arranged collinearly in the second direction.

[0181] In addition, since the second lens assembly 300 and the third lens assembly 400 have different driving distances, the first magnet M1 and the second magnet M2 may have different lengths, and thus, the center point of the first magnet M1 and the center point of the second magnet M2 may be disposed to be misaligned in the first direction.

[0182] At the same time, reference will be made to Figures 15 to 19 The housing 100 and the cover base 500 of the image pickup device actuator according to the embodiment of the present invention are described.

[0183] Specifically, Fig.15 is a view for describing a cover base of an image pickup device actuator according to an embodiment of the present invention, and Fig.16 1 is a view for describing a first surface of an image pickup device actuator according to an embodiment of the present invention. Fig.17 is a view for describing a separation space between a protrusion and a housing of an actuator of a camera device according to an embodiment of the present invention, and Fig.18 1 and 2 are views for describing the separated shapes of the protrusion and the extended portion of the image pickup device actuator according to one embodiment of the present invention. Fig.19 1 is a view for describing a first stopper and a second stopper of an image pickup device actuator according to an embodiment of the present invention.

[0184] First, as described above, the second lens assembly 300 and the third lens assembly 400 may be located in the housing 100 and moved in the optical axis direction by the first driver 320 and the second driver 420 , and the first lens assembly 200 may be fixed to the outside of the housing 100 .

[0185] In addition, since the cover base 500 is located between the first lens assembly 200 and the second lens assembly 300 , and more specifically, between the first lens assembly 200 and the housing 100 , the first lens assembly 200 may be mounted on the cover base 500 .

[0186] In this case, the cover base 500 may be mounted on the housing 100 .

[0187] That is, the first lens assembly 200 , the cover base 500 , the second lens assembly 300 , and the third lens assembly 400 may be sequentially disposed in the optical axis direction, and the first lens assembly 200 and the cover base 500 may be disposed outside the housing 100 .

[0188] In addition, the second lens assembly 300 and the third lens assembly 400 may be disposed inside the housing 100 .

[0189] More specifically, if Fig.15 As shown in , based on the housing 100 , the first lens assembly 200 is disposed outside the housing 100 at a position adjacent to the object side in the optical axis direction, and may include a first lens group 220 and a second wing 210 extending from the first lens group 220 in a second direction.

[0190] At the same time, if Fig.15As shown in , the cover base 500 can be disposed between the first lens assembly 200 and the housing 100 , and the cover base 500 can prevent the second lens assembly 300 moving in the first direction from colliding with the first lens assembly 200 to cause damage to the first lens group 220 or the second lens group 310 .

[0191] More specifically, the cover base 500 may include a first wing 510 extending in the second direction and a recess 520 in which the first lens assembly 200 is installed.

[0192] In this case, the first wing 510 may be formed to be longer than the second wing 210 in the second direction, and the first wing 510 and the second wing 210 may be spaced apart a predetermined distance in the first direction.

[0193] In this case, because the inner surface of the recess 520 contacts the first lens assembly 200 and the adhesive member may be disposed between the recess 520 and the first lens assembly 200 , the first lens assembly 200 may be fixed by the adhesive member.

[0194] In this case, the adhesive member disposed between the first lens assembly 200 and the recess 520 may be epoxy resin, but is not limited thereto.

[0195] In addition, when the bottom surface of the recess 520 is defined as the concave bottom surface 521 , the concave bottom surface 521 and the bottom surface of the first lens assembly 200 may be spaced apart by a predetermined distance in the first direction.

[0196] Meanwhile, the cover base 500 may include a first surface 530 facing the second lens assembly 300 and a second surface 540 extending away from the first surface 530 in the first direction with the first surface 530 interposed therebetween in the second direction.

[0197] More specifically, the first surface 530 may face the housing 100 , may be disposed in a direction toward the second lens assembly 300 , and may be spaced apart from the housing 100 by a predetermined distance, and thus, an impact applied to the cover base 500 may be minimized.

[0198] In this case, the first surface 530 may include a protrusion 531 protruding from the first lens assembly 200 in a direction facing the second lens assembly 300 in a first direction and extensions 532 extending from both ends of the protrusion 531 in a second direction.

[0199] In this case, based on the extension portion 532 , the protrusion 531 may extend to reduce its width in a direction extending from the first lens assembly 200 toward the second lens assembly 300 .

[0200] In this case, the second surface 540 may include an inclined portion 541 and a side surface portion 542, wherein the inclined portion extends obliquely from the extension portion 532 in a first direction away from the second lens assembly 300, and the side surface portion 542 extends from the inclined portion 541 in the optical axis direction away from the second lens assembly.

[0201] That is, the inclined portion 541 may be formed between the side surface portion 542 and the extending portion 532 and may extend obliquely from the extending portion 532 toward the side surface portion 532 , and the side surface portion 542 may extend from the inclined portion 541 toward the second wing 210 to be parallel to the first direction.

[0202] Meanwhile, a portion of the lower portion of the first wing 510 may be spaced apart from the housing 100 , and this will be described in detail with reference to the accompanying drawings.

[0203] In addition, if Fig.16 As shown in , each of the first surface 530 and the second surface 540 may be spaced apart from the housing 100 by a predetermined distance, and as described above, this may prevent a shock due to movement of the second lens assembly 300 from being transmitted to the first lens assembly 200 .

[0204] Meanwhile, the form in which the protrusion 531 and the extension 532 of the first surface 530 are spaced apart from the housing 100 will be described. Fig.17 and Fig.18 As shown in the figure, the bottom surface of the protrusion 531 facing the shell 100 and separated from the shell 100 can be defined as a protruding bottom surface 531a, the bottom surface of the extension 532 facing the shell 100 and separated from the shell 100 can be defined as an extended bottom surface 532a, the surface of the shell 100 facing the extended bottom surface 532a can be defined as a flat surface 111, and the surface of the shell 100 facing the protruding surface 531a can be defined as an inclined surface 112.

[0205] First, if Fig.17 As shown in FIG. 1 , the inclined surface 112 of the housing 100 facing the protrusion bottom surface 531 a of the protrusion 531 may be named because the protrusion bottom surface 531 a and the inclined surface 112 may be inclined to correspond to each other with respect to the first direction.

[0206] In addition, the protruding bottom surface 531 a and the inclined surface 112 may be inclined corresponding to each other with respect to the first direction, and the protruding bottom surface 531 a may be disposed to face the inclined surface 112 to be relatively located outside the housing 100 .

[0207] This can prevent a problem in which the second lens assembly 300 moving in a direction toward the first lens assembly 200 contacts the protrusion 531 when the protrusion bottom surface 531 a relatively moves toward the inside of the housing 100 .

[0208] Furthermore, in a case where the housing 100 is deformed due to heat or other factors and the inclined surface 112 moves away outward from the housing 100 , since the protruding bottom surface 531 a and the inclined surface 112 are in contact with each other, the deformation can be restricted.

[0209] In addition, if Fig.17 As shown in , there is a difference between the shapes of the protruding bottom surface 531a and the extended bottom surface 532a of each of the protrusion 531 and the extension 532, and this will be described in detail. The extended bottom surface 532a and the flat surface 111 of the housing 100 facing the extended surface 532a can be parallel to each other in the second direction, and the protruding bottom surface 531a and the inclined surface 112 of the housing 100 facing the protruding bottom surface 531a can be arranged parallel to each other in a state inclined relative to the first direction.

[0210] Due to such a form, the protrusion 531 and the extension 532 may be provided in a step inclined relative to each other, and the inclined surface 112 and the flat surface 111 may also be provided in a step inclined relative to each other.

[0211] At the same time, if Fig.19 As shown in FIG. 5 , a lower portion of the first wing 510 may include a third stopper 560 facing the second lens assembly 300 in the first direction and a fourth stopper 570 facing the third lens assembly 400 in the first direction.

[0212] In this case, a step portion 550 may be formed between the third stopper 560 and the first wing 510 and between the fourth stopper 570 and the first wing 510 .

[0213] In this case, the second lens assembly 300 may come into contact with the third stopper 560 when ascending, and the third lens assembly 400 may come into contact with the fourth stopper 570 when ascending.

[0214] Furthermore, since the third stopper 560 and the fourth stopper 570 are components disposed on the cover base 500 , the amount of impact applied to the first lens assembly 200 may be buffered by the cover base 500 and transferred to the first lens assembly 200 .

[0215] As described above, in the cover base 500, since the conventional third stopper 560 and the fourth stopper 570 are formed on the second wing 210 to buffer the amount of impact directly applied to the first lens assembly 200, the safety of the first lens assembly 200 can be more effectively ensured.

[0216] In addition, the length of the third stopper 560 and the step portion 550 at the first side in the first direction may be different from the length of the fourth stopper 570 and the step portion 550 at the second side in the first direction, and this may be due to the difference between the driving distances of the second lens assembly 300 and the third lens assembly 400.

[0217] Will refer to Fig. 20 and Fig.21 The cushioning of the cover base 500 according to the embodiment of the present invention will be described.

[0218] Specifically, Fig. 20 is a view for describing a third surface of the image pickup device actuator according to an embodiment of the present invention, and Fig.21 1 is a view for describing a step portion of an image pickup device actuator according to an embodiment of the present invention.

[0219] First, if Fig. 20 As shown in , although the first surface 530 and the second surface 540 are spaced apart from the housing 100 , when the bottom surface of the first wing 510 is defined as the wing bottom surface 511 , only a portion of the wing bottom surface 511 may be spaced apart from the housing 100 .

[0220] This may be because a space is required in which the first surface 530 and the second surface 540 are spaced apart from the housing 100. To this end, a protrusion 120 protruding from the housing 100 toward the wing bottom surface 511 may be included so that only a portion of the wing bottom surface 511 contacts the housing 100 and only a portion of the wing bottom surface 511 is spaced apart from the wing bottom surface 511.

[0221] At the same time, if Fig.21 As shown in , the arrangement of the cover base 500 will be described in detail. As described above, the inner surface of the recess 520 may contact the first lens assembly 200, and the first surface 530 and the second surface 540 may be arranged in pairs in the third direction with the first lens assembly 200 interposed therebetween.

[0222] In this case, the step portion 550 may be provided between the pair of second surfaces 540 in the third direction.

[0223] In addition, since the cover base 500 of the present invention involves reducing the amount of impact by transmitting the impact of the second lens assembly 300 or the third lens assembly 400 to the first lens assembly 200, a buffer space can be set between the first wing 510 and the third stopper 560 and between the first wing 510 and the fourth stopper 570 in the optical axis direction.

[0224] In this case, the buffer space may be divided into a first buffer space 551 not overlapping the third stopper 560 or the fourth stopper 570 in the first direction and a second buffer space 552 overlapping the third stopper 560 or the fourth stopper 570 in the first direction.

[0225] In this case, when the impact is directly transmitted to the third stopper 560 or the fourth stopper 570, the second buffer space 552 can enable the impact to be transmitted to the first lens assembly 200 and effectively reduce the impact and vibration, and because it is clear that the impact and vibration are reduced in the hollow portion structure, its detailed description will be omitted.

[0226] Meanwhile, the first buffer space 551 may be provided as a pair of first buffer spaces 551 in the third direction with the second buffer space 552 inserted therebetween, and when the impact is transmitted to the second buffer space 552, the impact and vibration that are not sufficiently reduced in the second buffer space 552 may be further reduced.

[0227] The above description of the housing 100 and the cover base 500 will be summarized. The cover base 500 may be disposed between the housing 100 and the first lens assembly 200, and each of the first surface 530 and the second surface 540 of the cover base 500 may be disposed to be spaced a predetermined distance from the housing 100 in the first direction to limit impact occurring in the housing 100.

[0228] In addition, since the third stopper 560 and the fourth stopper 570 are provided on the cover base 500 , it is possible to prevent the impact from being directly transmitted to the first lens assembly 200 .

[0229] In addition, the step portion 550 can be arranged between the third stopper 560 and the fourth stopper 570 and the first wing 510, and a second buffer space 552 (which overlaps with the third stopper 560 or the fourth stopper 570 in the first direction) and a pair of first buffer spaces 551 (in which the second buffer space 552 is inserted in the third direction) can be arranged inside the step portion 550.

[0230] In this case, the second buffer space 552 can reduce the shock and vibration directly transmitted to the third stopper 560 or the fourth stopper 570, and the first buffer space 551 can further reduce the shock and vibration that are not sufficiently reduced in the second buffer space 552, and minimize the amount of shock transmitted to the first lens assembly 200.

[0231] Exemplary embodiments of the present invention have been described, and it will be apparent to those skilled in the art that the present invention may be embodied in other specific forms besides the embodiments described above without departing from the purpose and scope of the present invention.

[0232] Therefore, the embodiments described above should be regarded as illustrative rather than restrictive, and therefore, the present invention is not limited to the above description but may be modified within the scope of the appended claims and their equivalents.

Claims

1. A camera device actuator, comprising: case; a first lens assembly and a second lens assembly, wherein the first lens assembly and the second lens assembly are disposed inside the housing and move along a first direction parallel to the optical axis direction; a first driver disposed at a first side of the housing and driving the first lens assembly; as well as a second driver disposed at a second side of the housing and driving the second lens assembly, The first driver includes a first magnet disposed on the first lens assembly and a first coil facing the first magnet. The second driver includes a second magnet disposed on the second lens assembly and a second coil facing the second magnet. A length of the first coil in the first direction is greater than a length of the first magnet in the first direction and is less than a length of the second coil in the first direction.

2. The camera actuator according to claim 1, comprising a controller, the controller being arranged spaced apart from the first coil in the first direction, in, The controller overlaps the first coil in the first direction, and overlaps the second coil in a second direction from the first side toward the second side.

3. The camera actuator according to claim 1, wherein: The second magnet is longer than the first magnet in the first direction; as well as A center of the first coil and a center of the second coil are arranged to be misaligned.

4. The image pickup device actuator according to claim 3, wherein: The first coil and the second coil are arranged to be longer than the second magnet in the first direction.

5. The camera actuator according to claim 1, wherein: The first lens assembly includes a first lens group and a first extension portion, the first extension portion surrounding the first lens group and extending toward the first driver; as well as The second lens assembly includes a second lens group and a second extension that surrounds the second lens group and extends toward the second actuator.

6. The camera actuator according to claim 5, wherein: The first extension includes a first recessed space recessed into the second side; The first magnet is disposed in the first concave space; The second extension includes a second recessed space recessed into the first side; and The second magnet is disposed in the second concave space.

7. The camera actuator according to claim 6, wherein: The first driver further includes a first track disposed between the first extension portion and the first coil and a first ball unit disposed between the first track and the first extension portion; The second driver further includes a second track disposed between the second extension portion and the second coil and a second ball unit disposed between the second track and the second extension portion; and The number of the second ball units is greater than the number of the first ball units.

8. The image pickup device actuator according to claim 1, wherein: The second lens assembly is disposed longer than the first lens assembly in the first direction and has a driving distance longer than a driving distance of the first lens assembly in the first direction.

9. The camera actuator according to claim 1, wherein: The first coil includes a first coil unit and a second coil unit disposed spaced apart from each other in the first direction; and The second coil includes a third coil unit and a fourth coil unit disposed spaced apart from each other in the first direction.

10. The image pickup device actuator according to claim 9, wherein: A first center point of a spacing area between the first coil unit and the second coil unit and a second center point of a spacing area between the third coil unit and the fourth coil unit are disposed so as to be misaligned in the first direction.

Images