Camera module

Abstract

The camera module includes: a housing; a lens module disposed in the housing and configured to move in one or more axial directions among three axes intersecting each other, the lens module including a lens barrel and a lens holder coupled together; and an aperture module coupled to the lens module and configured to move together with the lens module. The lens holder includes a first adhesive tank coupled to the lens barrel and a second adhesive tank in which a portion of the aperture module is accommodated. A blocking member is provided between the first adhesive tank and the second adhesive tank.

Description

[0001] Cross - reference to related applications

[0002] This application claims the benefit of priority to Korean Patent Application No. 10 - 2023 - 0146329, filed on October 30, 2023, with the Korean Intellectual Property Office, the entire disclosure of which is incorporated herein by reference for all purposes. Technical field

[0003] The present disclosure relates to a camera module. Background art

[0004] Camera modules have been used in portable electronic devices such as smart phones, tablet PCs, and laptop computers.

[0005] A mobile camera module may include an aperture module for controlling the amount of light.

[0006] The lens module of the camera module may move for focus adjustment and image stabilization functions. In this case, in a structure where the aperture module is fixed, the distance between the lens module and the aperture module may change, making it difficult to meet the required driving characteristics.

[0007] In addition, when the aperture module is configured to move together with the lens module, the coupling reliability between the aperture module and the lens module may be reduced due to the weight of the aperture module.

[0008] The above information is presented as background information only to assist in understanding the present disclosure. No determination has been made, and no assertion is made as to whether any of the above constitutes prior art with respect to the present disclosure. Summary of the utility model

[0009] The Summary of the utility model section is intended to introduce a selection of concepts in a brief form, which will be further described in the Detailed Description section below. The Summary of the utility model section is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to assist in determining the scope of the claimed subject matter.

[0010] In one general aspect, a camera module includes: a housing; a lens module disposed in the housing and configured to move in one or more axial directions among three mutually intersecting axes, the lens module including a lens barrel and a lens holder coupled together; and an aperture module coupled to the lens module and configured to move together with the lens module. The lens holder includes a first adhesive groove and a second adhesive groove, the first adhesive groove being bonded to the lens barrel, and a part of the aperture module is received in the second adhesive groove. A blocking member is disposed between the first adhesive groove and the second adhesive groove.

[0011] The lens barrel can be bonded to the lens holder by an adhesive applied to the first adhesive groove.

[0012] The aperture module can be bonded to the lens barrel and the lens holder by an adhesive applied to the second adhesive groove.

[0013] The lower surface of the aperture module can be bonded to the upper surface of the lens barrel by an adhesive.

[0014] The aperture module can include a support protrusion received in the second adhesive groove. The support protrusion can be spaced apart from the bottom surface of the second adhesive groove in the optical axis direction while being received in the second adhesive groove.

[0015] The aperture module can include a support protrusion received in the second adhesive groove. The support protrusion can be spaced apart from the inner surface of the second adhesive groove and the outer surface of the lens barrel while being received in the second adhesive groove.

[0016] The distance between the inner surface of the second adhesive groove and the outer surface of the lens barrel in a direction perpendicular to the optical axis can be greater than the width of the support protrusion in a direction perpendicular to the optical axis.

[0017] An adhesive can be applied to the second adhesive groove, and the adhesive surrounds the support protrusion.

[0018] The adhesive can contact the inner surface of the second adhesive groove, the outer surface of the support protrusion, and the outer surface of the lens barrel.

[0019] The blocking member can extend in the optical axis direction to separate the first adhesive groove and the second adhesive groove.

[0020] The length of the second adhesive groove in the circumferential direction can be longer than the length of the first adhesive groove in the circumferential direction.

[0021] A part of the outer surface of the lens barrel can face the first adhesive groove and the second adhesive groove in a direction perpendicular to the optical axis.

[0022] The camera module can further include a connection substrate configured to supply power to the aperture module, and including a moving part coupled to the aperture module, a fixed part fixed to the housing, and a support part connecting the moving part to the fixed part.

[0023] The camera module can further include a printed circuit board coupled to the housing, and an image sensor is disposed on the printed circuit board. The connection substrate can further include a connection part connecting the fixed part to the printed circuit board.

[0024] The aperture module may include: a base; a rotating body configured to rotate relative to the base; a plurality of blades configured to move together with the rotation of the rotating body to form an aperture; a magnet part provided on one of the base and the rotating body; a coil part provided to face the magnet part; and an aperture substrate on which the coil part is provided.

[0025] The camera module may further include: a printed circuit board coupled to the housing and having an image sensor provided thereon; and a connection substrate having one side connected to the aperture substrate and the other side connected to the printed circuit board.

[0026] The aperture module and the lens module may be configured to move together in the optical axis direction, a first axis direction perpendicular to the optical axis direction, and a second axis direction perpendicular to both the optical axis direction and the first axis direction.

[0027] Other features and aspects will become apparent in light of the appended claims, the drawings, and the following detailed description. Description of the Drawings

[0028] Figure 1 is a perspective view showing a camera module according to an embodiment of the present disclosure.

[0029] Figure 2 is a perspective view showing a state in which the aperture module and the camera actuator are separated from each other.

[0030] Figure 3 is an exploded perspective view showing a camera actuator according to an embodiment of the present disclosure.

[0031] Figure 4 is an exploded perspective view showing a lens barrel and a lens holder.

[0032] Figure 5 is a plan view showing a state in which the lens barrel and the lens holder are coupled to each other.

[0033] Figure 6 is an exploded perspective view showing the aperture module and the lens holder.

[0034] Figure 7 is a cross-sectional perspective view and a partial enlarged view showing a camera module according to an embodiment of the present disclosure.

[0035] Figure 8 is a plan view showing a connection substrate of the camera actuator.

[0036] Figure 9 is a perspective view showing a state in which the connection substrate and the housing are coupled to each other.

[0037] Figure 10 as viewed from below Figure 9Perspective view of the connection substrate and the housing therein.

[0038] Figure 11 is a sectional view of the connection substrate and the housing taken along Figure 9 line I-I' thereof.

[0039] Figure 12 Perspective view showing the state in which the connection substrate and the housing are coupled to each other.

[0040] Figure 13 is a perspective view of the connection substrate and the housing in Figure 12 viewed from below.

[0041] Figures 14 to 16 Figure showing a modified example of the connection substrate.

[0042] Figure 17 Perspective view showing the state in which the aperture module according to an embodiment of the present disclosure has a relatively small aperture.

[0043] Figure 18 Perspective view showing the state in which the aperture module according to an embodiment of the present disclosure has a relatively large aperture.

[0044] Figure 19 Exploded perspective view showing the aperture module according to an embodiment of the present disclosure.

[0045] Figure 20 Exploded perspective view showing an example in which the aperture driving unit is provided on the base and the rotating body.

[0046] Figure 21 Plan view showing the state in which the rolling part is provided on the base.

[0047] Figure 22 Perspective view showing the state in which the traction yoke part and the auxiliary yoke are separated from the base.

[0048] Figure 23 Figure showing the arrangement form of the magnet part, the traction yoke part and the auxiliary yoke.

[0049] Figure 24 is a sectional view of the aperture module taken along Figure 17 line II-II' thereof.

[0050] Figure 25 Plan view showing the guide groove in which the rolling part is provided.

[0051] In the entire drawings and the detailed description, unless otherwise described, the same reference numerals refer to the same elements. For clarity, illustration, and convenience purposes, the drawings may not be drawn to scale, and the relative dimensions, scales, and depictions of the elements in the drawings may be exaggerated. Detailed Implementation Modes

[0052] In the following, although examples of the present disclosure will be described in detail with reference to the accompanying drawings, it should be noted that the examples are not limited thereto.

[0053] The following detailed implementation modes are provided to assist the reader in obtaining a comprehensive understanding of the methods, apparatuses, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatuses, and / or systems described herein will be apparent after understanding the present disclosure. For example, the order of operations described herein is merely an example and, except for operations that must occur in a specific order, is not limited to the order set forth herein but may be changed, which will be apparent after understanding the present disclosure. Additionally, descriptions of features known in the art may be omitted for greater clarity and conciseness.

[0054] The features described herein may be implemented in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein are provided only to illustrate some of the many possible ways of implementing the methods, apparatuses, and / or systems described herein that will be apparent after understanding the present disclosure.

[0055] Throughout the specification, when an element such as a layer, region, or substrate is described as being "on," "connected to," or "coupled to" another element, the element may be directly "on," directly "connected to," or directly "coupled to" the other element, or there may be one or more other elements intervening between the element and the other element. In contrast, when an element is described as being "directly on," "directly connected to," or "directly coupled to" another element, there are no other elements intervening between the element and the other element.

[0056] As used herein, the phrase "and / or" includes any one of the associated listed items and any combination of any two or more of them; likewise, "at least one" includes any one of the associated listed items and any combination of any two or more of them.

[0057] Although terms such as "first", "second", and "third" may be used herein to describe various components, parts, regions, layers, or sections, these components, parts, regions, layers, or sections are not limited by these terms. Rather, these terms are only used to distinguish one component, part, region, layer, or section from another. Thus, a first component, first part, first region, first layer, or first section referred to in the examples herein may also be termed a second component, second part, second region, second layer, or second section without departing from the teachings of the examples described herein.

[0058] Spatial relative terms such as "above", "upper", "below", "lower", etc. may be used herein for convenience of description to describe the relationship of one element relative to another as shown in the figures. In addition to covering the orientations depicted in the figures, these spatial relative terms are intended to also cover different orientations of the device during use or operation. For example, if the device in the figures is flipped, an element described as "above" or "upper" relative to another element will be "below" or "lower" relative to that other element. Thus, depending on the spatial orientation of the device, the term "above" covers both the orientations of "above" and "below". The device may also be oriented in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relative terms used herein should be interpreted accordingly.

[0059] The terms used herein are for the purpose of describing various examples only and are not intended to limit the disclosure. Unless the context clearly dictates otherwise, the terms "a", "an", and "the" are intended to include the plural forms as well. The terms "comprising", "including", and "having" specify the presence of the stated features, numbers, operations, components, elements, and / or combinations thereof, but do not preclude the presence or addition of one or more other features, numbers, operations, components, elements, and / or combinations thereof.

[0060] Due to manufacturing techniques and / or tolerances, variations in the shapes shown in the figures may occur. Thus, the examples described herein are not limited to the specific shapes shown in the figures, but include shape variations that occur during manufacturing.

[0061] It should be noted that, herein, the term "may" is used with respect to examples, e.g., with respect to what an example may include or implement, meaning that there is at least one example in which such a feature is included or implemented, and not all examples are so limited.

[0062] The features of the examples described herein can be combined in various ways that will be apparent after understanding the present disclosure. Further, although the examples described herein have various configurations, other configurations that will be apparent after understanding the present disclosure are also possible.

[0063] Figure 1 is a perspective view showing a camera module according to an embodiment. Figure 2 is a perspective view showing a state in which the aperture module and the camera actuator are separated from each other.

[0064] Referring to Figure 1 and Figure 2 , the camera module 1 according to an embodiment may include an aperture module 2 and a camera actuator 3.

[0065] The camera actuator 3 may include a housing 1100 having an internal space (see Figure 3 ) and a lens module 2000 disposed in the housing 1100. The lens module 2000 may move in one or more axial directions among three axes intersecting each other.

[0066] For example, the lens module 2000 may move in the optical axis (Z-axis) direction for focus adjustment. Further, the lens module 2000 may move in a direction perpendicular to the optical axis (Z-axis) for image stabilization.

[0067] The aperture module 2 may be coupled to the camera actuator 3 and may control the amount of light incident on the camera actuator 3. For example, the aperture module 2 may have an aperture 210 through which light passes (see Figure 19 ), and may adjust the amount of light incident on the camera actuator 3 by changing the size of the aperture 210.

[0068] The aperture module 2 may be coupled to the lens module 2000 and configured to move together with the lens module 2000.

[0069] Figure 3 is an exploded perspective view showing a camera actuator according to an embodiment. Figure 4 is an exploded perspective view showing a lens barrel and a lens holder. Figure 5 is a plan view showing a state in which the lens barrel and the lens holder are coupled to each other.

[0070] Figure 6 is an exploded perspective view showing an aperture module and a lens holder. Figure 7 is a cross-sectional perspective view and a partial enlarged view showing a camera module according to an embodiment.

[0071] Referring to Figure 3 , the camera actuator 3 according to an embodiment may include a lens module 2000 and a housing 1100 that houses the lens module 2000.

[0072] In addition, the camera actuator 3 may further include a guide frame 3000, a carrier unit 4000, a housing 1300, and an image sensor module 9000.

[0073] The carrier unit 4000 may be disposed in the housing 1100 and may move relative to the housing 1100 in the optical axis (Z-axis) direction.

[0074] The lens module 2000 may be disposed on the carrier unit 4000, and the carrier unit 4000 and the lens module 2000 may move together in the optical axis (Z-axis) direction. Thus, the distance between the lens module 2000 and the image sensor 9100 can be changed to adjust the focus.

[0075] In addition, the lens module 2000 may move in a direction perpendicular to the optical axis (Z-axis) direction and may correct jitter during imaging.

[0076] The guide frame 3000 may be disposed between the carrier unit 4000 and the lens module 2000. The guide frame 3000 may be used to guide the lens module 2000 to move in a direction perpendicular to the optical axis (Z-axis) direction.

[0077] The lens module 2000 may include a lens barrel 2100 and a lens holder 2200. The lens barrel 2100 may have a hollow cylindrical shape, and at least one lens for imaging an object may be accommodated in the lens barrel 2100. When multiple lenses are provided, the multiple lenses may be mounted in the lens barrel 2100 on the optical axis (Z-axis).

[0078] The lens barrel 2100 may be coupled to the lens holder 2200. Thus, the lens barrel 2100 and the lens holder 2200 may move together.

[0079] In an embodiment, the lens barrel 2100 may be coupled to the lens holder 2200 such that an outer surface of the lens barrel 2100 may contact an inner surface of the lens holder 2200. For example, the lens holder 2200 may have a through hole in the center to accommodate the lens barrel 2100.

[0080] In the following embodiments, an example in which the base 400 of the aperture module 2 may be coupled to the lens module 2000 of the camera actuator 3 will be described. In this case, when the lens module 2000 can move, the aperture module 2 may move together with the lens module 2000.

[0081] Refer to Figure 4 and Figure 5, the lens holder 2200 may have a first adhesive groove 2210 formed on its inner surface. When the lens barrel 2100 is received in the through hole of the lens holder 2200, the outer surface of the lens barrel 2100 may directly face the first adhesive groove 2210.

[0082] An adhesive may be applied to the first adhesive groove 2210, and thus, the lens barrel 2100 may be firmly coupled to the lens holder 2200. A plurality of first adhesive grooves 2210 may be spaced apart from each other on the inner surface of the lens holder 2200.

[0083] Meanwhile, referring to Figure 6 and Figure 7 , the aperture module 2 may be coupled to the lens holder 2200. For example, the base 400 of the aperture module 2 may be coupled to the lens holder 2200.

[0084] The lens barrel 2100 may also be coupled to the lens holder 2200, but in Figure 6 , the lens barrel 2100 is not shown for ease of description.

[0085] In an embodiment, the base 400 of the aperture module 2 may include a support protrusion 430 extending toward the lens holder 2200 in the optical axis (Z-axis) direction. In addition, the lens holder 2200 may have a second adhesive groove 2230 formed on its inner surface.

[0086] At least a portion of the support protrusion 430 of the base 400 may be disposed in the second adhesive groove 2230 of the lens holder 2200. When the support protrusion 430 is disposed in the second adhesive groove 2230, the support protrusion 430 may be spaced apart from the inner surface of the second adhesive groove 2230 and the outer surface of the lens barrel 2100. For example, the thickness of the support protrusion 430 may be less than the distance between the outer surface of the lens barrel 2100 and the inner surface of the second adhesive groove 2230.

[0087] In addition, the support protrusion 430 may be disposed such that its lower surface may be spaced apart from the bottom surface of the second adhesive groove 2230.

[0088] An adhesive may be applied to the second adhesive groove 2230. The adhesive may surround the support protrusion 430. For example, the adhesive applied to the second adhesive groove 2230 may contact all of the inner surface of the second adhesive groove 2230, the outer surface of the support protrusion 430, and the outer surface of the lens barrel 2100.

[0089] Thus, the lens barrel 2100 and the lens holder 2200 may be more firmly coupled, and the aperture module 2 and the lens holder 2200 may also be more firmly coupled.

[0090] A plurality of second adhesive grooves 2230 may be spaced apart from each other on the inner surface of the lens holder 2200.

[0091] A blocking member 2250 may be disposed between the first adhesive groove 2210 and the second adhesive groove 2230, which may prevent the adhesive from flowing into the second adhesive groove 2230 when the lens barrel 2100 is coupled to the lens holder 2200.

[0092] The blocking member 2250 may extend in the optical axis (Z-axis) direction to separate the first adhesive groove 2210 from the second adhesive groove 2230.

[0093] Meanwhile, the aperture module 2 may also be coupled to the lens barrel 2100. For example, referring to Figure 7 , the lower surface of the base 400 of the aperture module 2 may be bonded to the upper surface of the lens barrel 2100. The portion where the aperture module 2 and the lens barrel 2100 are bonded to each other may be continuously formed in the circumferential direction of the lens barrel 2100.

[0094] In a structure where the aperture module 2 moves together with the lens module 2000, the aperture module 2 may need to be coupled to the lens module 2000. In this case, when the load of the aperture module 2 is concentrated on a specific portion of the lens module 2000, the aperture module 2 and the lens module 2000 are likely to be separated from each other due to impact.

[0095] Therefore, in order to prevent the load of the aperture module 2 from being concentrated on a specific portion, the aperture module 2 may be bonded to each of the lens barrel 2100 and the lens holder 2200 by an adhesive.

[0096] Referring to Figure 3 , the lens module 2000 may be accommodated in the housing 1100. As an example, the housing 1100 may have an upper and lower open shape, a carrying portion 4000 may be provided in the inner space of the housing 1100, and the lens module 2000 may be accommodated in the carrying portion 4000.

[0097] The camera actuator 3 may adjust the focus of the lens module 2000 by moving the lens module 2000 in the optical axis (Z-axis) direction, and may correct jitter during imaging by moving the lens module 2000 in a direction perpendicular to the optical axis (Z-axis).

[0098] The camera actuator 3 may include a focusing drive unit 5000 that moves the lens module 2000 in the optical axis (Z-axis) direction and a jitter drive unit 6000 that moves the lens module 2000 in a direction perpendicular to the optical axis (Z-axis).

[0099] The image sensor module 9000 may be a device for converting incident light passing through the lens module 2000 into an electrical signal.

[0100] As an example, the image sensor module 9000 may include an image sensor 9100 and a printed circuit board 9200 connected to the image sensor 9100, and may also include an infrared filter.

[0101] The infrared filter may block light in the infrared region of the light incident through the lens module 2000.

[0102] The image sensor 9100 may convert incident light passing through the lens module 2000 into an electrical signal. As an example, the image sensor 9100 may be a charge-coupled device (CCD) or a complementary metal oxide semiconductor (CMOS).

[0103] The electrical signal converted by the image sensor 9100 may be output as an image through the display unit of the portable electronic device.

[0104] The image sensor 9100 may be fixed to the printed circuit board 9200 and may be electrically connected to the printed circuit board 9200 by wire bonding.

[0105] The image sensor module 9000 may be disposed below the housing 1100.

[0106] The outer shell 1300 may be coupled to the housing 1100 to surround the outer surface of the housing 1100 and may serve to protect the internal components of the camera actuator 3.

[0107] The focusing drive unit 5000 may move the lens module 2000 to focus on an object. For example, the focusing drive unit 5000 may move the carrier unit 4000 by generating a driving force in the optical axis (Z-axis) direction. Since the lens module 2000 is disposed in the carrier unit 4000, the carrier unit 4000 and the lens module 2000 may move together in the optical axis (Z-axis) direction by the driving force of the focusing drive unit 5000.

[0108] In addition, since the base 400 of the aperture module 2 is coupled to the lens module 2000, the aperture module 2 may also move in the optical axis (Z-axis) direction together with the lens module 2000.

[0109] The focusing drive unit 5000 may include a first magnet 5100 and a first coil 5300. The first magnet 5100 and the first coil 5300 may be disposed to face each other in a direction perpendicular to the optical axis (Z-axis).

[0110] The first magnet 5100 can be mounted on the carrier part 4000. As an example, the first magnet 5100 can be mounted on a side surface of the carrier part 4000.

[0111] The first magnet 5100 can be magnetized such that one surface (e.g., the surface facing the first coil 5300) can have both an N pole and an S pole. For example, the N pole, the neutral zone, and the S pole can be sequentially arranged in the optical axis (Z-axis) direction on one surface of the first magnet 5100 facing the first coil 5300.

[0112] The first coil 5300 can be arranged to face the first magnet 5100. For example, the first coil 5300 can be arranged to face the first magnet 5100 in a direction perpendicular to the optical axis (Z-axis).

[0113] The first coil 5300 can be arranged on the substrate 7000, and the substrate 7000 can be mounted on the housing 1100 such that the first magnet 5100 and the first coil 5300 can face each other in a direction perpendicular to the optical axis (Z-axis). As an example, the first coil 5300 can be arranged on one surface of the substrate 7000. The substrate 7000 can be mounted on a side surface of the housing 1100 such that the first magnet 5100 and the first coil 5300 can face each other in a direction perpendicular to the optical axis (Z-axis).

[0114] The housing 1100 can include an opening, and the first coil 5300 arranged on the substrate 7000 can directly face the first magnet 5100 through the opening.

[0115] The first magnet 5100 can be a moving member mounted on the carrier part 4000 and moving together with the carrier part 4000 in the optical axis (Z-axis) direction, and the first coil 5300 can be a fixed member fixed to the substrate 7000.

[0116] When electric power is applied to the first coil 5300, the carrier part 4000 can move in the optical axis (Z-axis) direction by the electromagnetic force between the first magnet 5100 and the first coil 5300.

[0117] Since the lens module 2000 is accommodated in the carrier part 4000, the lens module 2000 can also move in the optical axis (Z-axis) direction by the movement of the carrier part 4000. In addition, the aperture module 2 can also move in the optical axis (Z-axis) direction together with the lens module 2000.

[0118] The first ball member B1 can be arranged between the carrier part 4000 and the housing 1100. For example, the first ball member B1 can be arranged between the carrier part 4000 and the housing 1100 and can reduce friction when the carrier part 4000 moves.

[0119] The first ball member B1 may include a plurality of balls arranged in the direction of the optical axis (Z-axis). When the carrier 4000 moves in the direction of the optical axis (Z-axis), the plurality of balls may roll in the direction of the optical axis (Z-axis).

[0120] The first yoke 5700 may be disposed in the housing 1100. The first yoke 5700 may be disposed at a position facing the first magnet 5100. For example, the first coil 5300 may be disposed on one surface of the substrate 7000, and the first yoke 5700 may be disposed on the other surface of the substrate 7000.

[0121] The first magnet 5100 and the first yoke 5700 may generate an attractive force between each other. For example, the first yoke 5700 may be a magnetic material. The attractive force may act between the first magnet 5100 and the first yoke 5700 in a direction perpendicular to the optical axis (Z-axis).

[0122] The first ball member B1 may contact each of the carrier 4000 and the housing 1100 by the attractive force between the first magnet 5100 and the first yoke 5700.

[0123] The receiving grooves may be provided on the surfaces of the carrier 4000 and the housing 1100 that face each other. For example, the carrier 4000 may include a first receiving groove, and the housing 1100 may include a second receiving groove.

[0124] The first receiving groove and the second receiving groove may extend in the direction of the optical axis (Z-axis). The first ball member B1 may be disposed between the first receiving groove and the second receiving groove.

[0125] The first ball member B1 may include a first ball group BG1 and a second ball group BG2, and each of the first ball group BG1 and the second ball group BG2 may include a plurality of balls arranged in the direction of the optical axis (Z-axis).

[0126] The first ball group BG1 and the second ball group BG2 may be spaced apart from each other in a direction perpendicular to the optical axis (Z-axis) (for example, the X-axis direction). The number of balls in the first ball group BG1 and the number of balls in the second ball group BG2 may be different.

[0127] For example, the first ball group BG1 may include two or more balls arranged in the direction of the optical axis (Z-axis), and the number of balls in the second ball group BG2 may be less than the number of balls included in the first ball group BG1.

[0128] On the premise that the number of balls included in the first ball group BG1 is different from the number of balls included in the second ball group BG2, the number of balls included in each ball member can vary. In the following description, for ease of description, the description will be based on an embodiment in which the first ball group BG1 can include three balls and the second ball group BG2 can include two balls.

[0129] Among the three balls included in the first ball group BG1, the two balls disposed on the outermost side in the direction parallel to the optical axis (Z-axis) can have the same diameter, and the ball disposed between them can have a diameter smaller than the diameter of the balls disposed on the outermost side.

[0130] The two balls included in the second ball group BG2 can have the same diameter.

[0131] Meanwhile, in the embodiment, the auxiliary yoke 5710 can be disposed at a position facing the first magnet 5100. For example, the auxiliary yoke 5710 can be disposed on the substrate 7000 to face the first magnet 5100. In addition, the auxiliary yoke 5710 can be disposed inside the first coil 5300.

[0132] The auxiliary yoke 5710 can be disposed closer to the first ball group BG1 than the second ball group BG2. The auxiliary yoke 5710 can be a material that can generate an attractive force on the first magnet 5100.

[0133] Therefore, the resultant force of the attractive force acting between the first magnet 5100 and the first yoke 5700 and the attractive force acting between the first magnet 5100 and the auxiliary yoke 5710 can be set to be closer to the first ball group BG1 than the second ball group BG2.

[0134] In the embodiment, the camera actuator 3 can detect the position of the carrier unit 4000 in the direction of the optical axis (Z-axis).

[0135] For this purpose, a first position sensor 5500 can be provided. The first position sensor 5500 can be disposed on the substrate 7000 to face the first magnet 5100. The first position sensor 5500 can be a Hall sensor.

[0136] Meanwhile, the camera actuator 3 can correct jitter during shooting by moving the lens module 2000 in a direction perpendicular to the optical axis (Z-axis). For this purpose, the camera actuator 3 can include a jitter driving unit 6000 that moves the lens module 2000 in a direction perpendicular to the optical axis (Z-axis).

[0137] The guiding frame 3000 and the lens module 2000 can be sequentially accommodated in the carrier part 4000. For example, the guiding frame 3000 can be disposed between the carrier part 4000 and the lens module 2000. The guiding frame 3000 can be in the shape of a quadrilateral plate having a hollow part therein.

[0138] The guiding frame 3000 and the lens module 2000 can be moved together in one direction perpendicular to the optical axis (Z-axis) by the driving force of the jitter driving unit 6000, and the lens module 2000 can move relative to the guiding frame 3000 in another direction perpendicular to the optical axis (Z-axis).

[0139] For example, the guiding frame 3000 and the lens module 2000 can be moved together in the direction of the first axis (X-axis) perpendicular to the optical axis (Z-axis). The lens module 2000 can move relative to the guiding frame 3000 in the direction of the second axis (Y-axis) perpendicular to both the optical axis (Z-axis) and the first axis (X-axis).

[0140] In addition, since the base 400 of the aperture module 2 is coupled to the lens module 2000, the aperture module 2 can also move together with the lens module 2000 in the direction of the first axis (X-axis) and the direction of the second axis (Y-axis).

[0141] The jitter driving unit 6000 can include a first sub-driving unit 6100 and a second sub-driving unit 6300. The first sub-driving unit 6100 can generate a driving force in the direction of the first axis (X-axis), and the second sub-driving unit 6300 can generate a driving force in the direction of the second axis (Y-axis).

[0142] The first sub-driving unit 6100 can include a second magnet 6110 and a second coil 6130. The second magnet 6110 and the second coil 6130 can be arranged to face each other in the direction of the first axis (X-axis).

[0143] The second magnet 6110 can be disposed on the lens module 2000. For example, the second magnet 6110 can be mounted on one side surface of the lens holder 2200.

[0144] The second magnet 6110 can be magnetized such that one surface thereof can have both an N pole and an S pole. For example, one surface of the second magnet 6110 can sequentially include an N pole, a neutral zone, and an S pole in the direction of the second axis (Y-axis). The second magnet 6110 can have a shape having a length in the direction of the second axis (Y-axis).

[0145] The other surface of the second magnet 6110 can be magnetized to have a polarity opposite to the polarity of one surface of the second magnet 6110.

[0146] The second coil 6130 may be arranged to face the second magnet 6110. For example, the second coil 6130 may be arranged to face the second magnet 6110 in the direction of the first axis (X-axis).

[0147] The second coil 6130 may include two coils, and each of the two coils of the second coil 6130 may have a hollow annular shape.

[0148] One of the two coils of the second coil 6130 may be arranged to face the N pole of one surface of the second magnet 6110, and the other of the two coils of the second coil 6130 may be arranged to face the S pole of one surface of the second magnet 6110.

[0149] Due to the polar arrangement of the second magnet 6110, magnetic field leakage can be prevented, and thus, sufficient driving force can be generated even in the case of low power.

[0150] During image stabilization, the second magnet 6110 may be a moving member mounted on the lens module 2000, and the second coil 6130 may be a fixed member fixed to the housing 1100.

[0151] When power is applied to the second coil 6130, the lens module 2000 and the guide frame 3000 may move in the direction of the first axis (X-axis) by the electromagnetic force between the second magnet 6110 and the second coil 6130.

[0152] The second magnet 6110 and the second coil 6130 may generate a driving force in the direction facing each other (e.g., the direction of the first axis (X-axis)).

[0153] The second sub-driving unit 6300 may include a third magnet 6310 and a third coil 6330. The third magnet 6310 and the third coil 6330 may be arranged to face each other in the direction of the second axis (Y-axis).

[0154] The third magnet 6310 may be arranged on the lens module 2000. For example, the third magnet 6310 may be mounted on the other surface of the lens holder 2200.

[0155] The third magnet 6310 may be magnetized such that one of its surfaces may have both an S pole and an N pole. For example, one surface of the third magnet 6310 may sequentially include an S pole, a neutral region, and an N pole in the direction of the first axis (X-axis). The third magnet 6310 may have a shape having a length in the direction of the first axis (X-axis).

[0156] The other surface of the third magnet 6310 may be magnetized to have a polarity opposite to that of one surface of the third magnet 6310.

[0157] The third coil 6330 may be arranged to face the third magnet 6310. For example, the third coil 6330 may be arranged to face the third magnet 6310 in the direction of the second axis (Y-axis).

[0158] The third coil 6330 may include two coils, and each of the two coils of the third coil 6330 may have a hollow annular shape.

[0159] One of the two coils of the third coil 6330 may be arranged to face the N pole of one surface of the third magnet 6310, and the other of the two coils of the third coil 6330 may be arranged to face the S pole of one surface of the third magnet 6310.

[0160] Due to the polarity arrangement of the third magnet 6310, magnetic field leakage can be prevented, and thus, sufficient driving force can be generated even in the case of low power.

[0161] The second coil 6130 and the third coil 6330 may be arranged on the substrate 7000. For example, the second coil 6130 and the third coil 6330 may be arranged on the substrate 7000 to face the second magnet 6110 and the third magnet 6310.

[0162] The substrate 7000 may be mounted on the side surface of the housing 1100, and the second coil 6130 and the third coil 6330 may directly face the second magnet 6110 and the third magnet 6310 through the openings provided in the housing 1100.

[0163] During image stabilization, the third magnet 6310 may be a moving member mounted on the lens module 2000, and the third coil 6330 may be a fixed member fixed to the housing 1100.

[0164] When power is applied to the third coil 6330, the lens module 2000 may move in the direction of the second axis (Y-axis) by the electromagnetic force between the third magnet 6310 and the third coil 6330.

[0165] The third magnet 6310 and the third coil 6330 may generate a driving force in the direction facing each other (e.g., the direction of the second axis (Y-axis)).

[0166] The second magnet 6110 and the third magnet 6310 may be arranged perpendicular to each other in a plane perpendicular to the optical axis (Z-axis), and the second coil 6130 and the third coil 6330 may also be arranged perpendicular to each other in a plane perpendicular to the optical axis (Z-axis).

[0167] The camera actuator 3 according to an embodiment may include a plurality of ball members that support the guide frame 3000 and the lens module 2000. The plurality of ball members may be used to guide the movement of the guide frame 3000 and the lens module 2000 during the image stabilization process, and may also be used to maintain the distance between the carrier portion 4000, the guide frame 3000, and the lens module 2000.

[0168] The plurality of ball members may include a second ball member B2 and a third ball member B3.

[0169] The second ball member B2 may guide the movement of the guide frame 3000 and the lens module 2000 in the first axis (X-axis) direction, and the third ball member B3 may guide the movement of the lens module 2000 in the second axis (Y-axis) direction.

[0170] As an example, when a driving force occurs in the first axis (X-axis) direction, the second ball member B2 may roll in the first axis (X-axis) direction. Accordingly, the second ball member B2 may guide the movement of the guide frame 3000 and the lens module 2000 in the first axis (X-axis) direction.

[0171] When a driving force occurs in the second axis (Y-axis) direction, the third ball member B3 may roll in the second axis (Y-axis) direction. Accordingly, the third ball member B3 may guide the movement of the lens module 2000 in the second axis (Y-axis) direction.

[0172] The second ball member B2 may include a plurality of ball members disposed between the carrier portion 4000 and the guide frame 3000, and the third ball member B3 may include a plurality of ball members disposed between the guide frame 3000 and the lens module 2000.

[0173] For example, the second ball member B2 and the third ball member B3 may each include four ball members.

[0174] A third receiving groove 4100 for receiving the second ball member B2 may be formed on at least one surface of the carrier portion 4000 and the guide frame 3000 facing each other in the optical axis (Z-axis) direction. The third receiving groove 4100 may include a plurality of grooves corresponding to the plurality of ball members of the second ball member B2.

[0175] The second ball member B2 may be received in the third receiving groove 4100 and may be inserted between the carrier portion 4000 and the guide frame 3000.

[0176] When the second ball member B2 is received in the third receiving groove 4100, its movement in the optical axis (Z-axis) direction and the second axis (Y-axis) direction may be restricted, and it may move only in the first axis (X-axis) direction. For example, the second ball member B2 may roll only in the first axis (X-axis) direction.

[0177] For this purpose, the planar shape of each of the plurality of grooves of the third receiving groove 4100 may be a rectangular shape having a length in the first axis (X-axis) direction.

[0178] A fourth receiving groove 3100 for receiving the third ball member B3 may be formed on at least one surface where the guide frame 3000 and the lens module 2000 (e.g., the lens holder 2200) face each other in the optical axis (Z-axis) direction. The fourth receiving groove 3100 may include a plurality of grooves corresponding to the plurality of ball members of the third ball member B3.

[0179] The third ball member B3 may be received in the fourth receiving groove 3100 and may be inserted between the guide frame 3000 and the lens module 2000.

[0180] When the third ball member B3 is received in the fourth receiving groove 3100, its movement in the optical axis (Z-axis) direction and the first axis (X-axis) direction may be restricted, and it may only move in the second axis (Y-axis) direction. As an example, the third ball member B3 may only roll in the second axis (Y-axis) direction.

[0181] For this purpose, the planar shape of each of the plurality of grooves of the fourth receiving groove 3100 may be a rectangular shape having a length in the second axis (Y-axis) direction.

[0182] When a driving force occurs in the first axis (X-axis) direction, the guide frame 3000 and the lens module 2000 may move together in the first axis (X-axis) direction. In addition, the aperture module 2 may also move in the first axis (X-axis) direction together with the lens module 2000.

[0183] Here, the second ball member B2 may roll in the first axis (X-axis) direction. In this case, the movement of the third ball member B3 may be restricted.

[0184] In addition, when a driving force occurs in the second axis (Y-axis) direction, the lens module 2000 may move relative to the guide frame 3000 in the second axis (Y-axis) direction. In addition, the aperture module 2 may also move in the second axis (Y-axis) direction together with the lens module 2000.

[0185] Here, the third ball member B3 may roll in the second axis (Y-axis) direction. In this case, the movement of the second ball member B2 may be restricted.

[0186] In an embodiment, the camera actuator 3 may detect the position of the lens module 2000 in a direction perpendicular to the optical axis (Z-axis).

[0187] To this end, a second position sensor 6150 and a third position sensor 6350 can be provided. The second position sensor 6150 can be provided on the substrate 7000 to face the second magnet 6110, and the third position sensor 6350 can be provided on the substrate 7000 to face the third magnet 6310. The second position sensor 6150 and the third position sensor 6350 can be Hall sensors.

[0188] At least one of the second position sensor 6150 and the third position sensor 6350 can include two Hall sensors. For example, the third position sensor 6350 can include two Hall sensors arranged to face the third magnet 6310.

[0189] Whether the lens module 2000 rotates can be sensed by two Hall sensors facing the third magnet 6310. Since the third coil 6330 includes two coils facing the third magnet 6310, the rotational force applied to the lens module 2000 can be canceled by controlling the third coil 6330.

[0190] Rotation of the lens module 2000 can be prevented by the configuration of the third receiving groove 4100 in which the second ball member B2 is provided and the fourth receiving groove 3100 in which the third ball member B3 is provided. However, due to the influence of tolerances that occur during the manufacturing of the device, the lens module 2000 may rotate slightly.

[0191] However, the camera actuator 3 according to the embodiment can determine whether the lens module 2000 rotates through the third coil 6330 and the third position sensor 6350, and can cancel the rotational force accordingly.

[0192] Meanwhile, in the embodiment, the second yoke 4310 and the third yoke 4330 can be arranged such that the carrier portion 4000 and the guide frame 3000 can maintain a contact state with the second ball member B2, and the guide frame 3000 and the lens module 2000 can maintain a contact state with the third ball member B3.

[0193] The second yoke 4310 and the third yoke 4330 can be fixed to the carrier portion 4000, and can be arranged to face the second magnet 6110 and the third magnet 6310 in the optical axis (Z-axis) direction.

[0194] Therefore, an attractive force can be generated in the optical axis (Z-axis) direction between the second yoke 4310 and the second magnet 6110 and between the third yoke 4330 and the third magnet 6310.

[0195] The lens module 2000 and the guide frame 3000 can be pressed in the directions toward the second yoke 4310 and the third yoke 4330 by the attractive forces between the second yoke 4310 and the second magnet 6110 and between the third yoke 4330 and the third magnet 6310, such that the guide frame 3000 and the lens module 2000 can maintain the contact state with the third ball member B3.

[0196] The second yoke 4310 and the third yoke 4330 can be materials that can generate an attractive force between the second magnet 6110 and the third magnet 6310. As an example, the second yoke 4310 and the third yoke 4330 can be magnetic materials.

[0197] Meanwhile, the first stopper 2300 can be coupled to the carrier part 4000. The first stopper 2300 can be coupled to the carrier part 4000 to cover at least a part of the upper surface of the lens module 2000. For example, the first stopper 2300 can cover at least a part of the upper surface of the lens holder 2200.

[0198] The first stopper 2300 can prevent the guide frame 3000 and the lens module 2000 from being separated from the carrier part 4000 due to an external impact.

[0199] A buffer member having elasticity can be coupled to an edge portion of the first stopper 2300.

[0200] In addition, the second stopper 2400 can be coupled to the housing 1100. The second stopper 2400 can include a buffer protrusion provided at a position facing the first ball member B1 in the optical axis (Z-axis) direction.

[0201] The second stopper 2400 can prevent the carrier part 4000 and the first ball member B1 from being separated due to an external impact.

[0202] Figure 8 is a plan view showing a connection substrate of a camera actuator. Figure 9 is a perspective view showing a state where the connection substrate and the housing are coupled to each other. Figure 10 is viewed from below Figure 9 a perspective view of the connection substrate and the housing in

[0203] Figure 11 is along Figure 9 a cross-sectional view of the connection substrate and the housing taken along line I-I'. Figure 12 is a perspective view showing a state where the connection substrate and the housing are coupled to each other. Figure 13 is viewed from below Figure 12 a perspective view of the connection substrate and the housing in

[0204] Refer to Figure 3and Figure 8 , the camera actuator 3 may include a connection substrate 8000. The connection substrate 8000 may connect the aperture substrate 540 (see Figure 19 ) of the aperture module 2 to the printed circuit board 9200 of the image sensor module 9000.

[0205] In other words, the aperture substrate 540 may receive power through the connection substrate 8000.

[0206] The connection substrate 8000 may include a fixed portion 8100, a movable portion 8300, and a support portion 8500. The connection substrate 8000 may be a rigid flexible printed circuit board (RFPCB).

[0207] The movable portion 8300 may be disposed inside the fixed portion 8100, and the support portion 8500 may be disposed between the fixed portion 8100 and the movable portion 8300.

[0208] The fixed portion 8100 may be coupled to the housing 1300 of the camera actuator 3. For example, the fixed portion 8100 may be mounted on the inner surface of the housing 1300. The fixed portion 8100 may be a fixing member fixed to the housing 1300. The fixed portion 8100 may be a rigid PCB. In addition, the fixed portion 8100 may have a quadrilateral frame shape.

[0209] A connection portion 8700 extending in the optical axis (Z-axis) direction may be disposed on one side of the fixed portion 8100. The connection portion 8700 may be connected to the printed circuit board 9200 of the image sensor module 9000.

[0210] The movable portion 8300 may be coupled to the aperture module 2. For example, the movable portion 8300 may be mounted on the base 400 of the aperture module 2. The movable portion 8300 may be a movable member that can move together with the aperture module 2. The movable portion 8300 may be a rigid PCB. In addition, the movable portion 8300 may have an annular shape.

[0211] A part of the movable portion 8300 may be coupled to the aperture substrate 540 of the aperture module 2. For example, a part of the movable portion 8300 may be coupled to the first extension portion 541 (see Figure 19 ) of the aperture substrate 540.

[0212] Connection pads may be disposed on one side of the movable portion 8300, and the aperture substrate 540 may be coupled to the connection pads of the movable portion 8300.

[0213] For example, connection pads can be provided on each of the moving part 8300 and the first extension part 541 of the aperture substrate 540, and the connection pads of the first extension part 541 and the connection pads of the moving part 8300 can be welded and joined to each other.

[0214] In another embodiment, connection pads can be provided on one of the moving part 8300 and the first extension part 541, and connectors can be provided on the other. The connection pads and the connectors can be connected to each other.

[0215] The support part 8500 can be provided between the moving part 8300 and the fixed part 8100, and the moving part 8300 and the fixed part 8100 can be connected to each other. For example, one side of the support part 8500 can be connected to the moving part 8300, and the other side of the support part 8500 can be connected to the fixed part 8100.

[0216] The support part 8500 can be a flexible PCB. When the moving part 8300 moves, the support part 8500 provided between the moving part 8300 and the fixed part 8100 can bend.

[0217] The support part 8500 can extend along the periphery of at least a part of the moving part 8300. The support part 8500 can have a single bridge shape or multiple bridge shapes.

[0218] The support part 8500 can have a bent shape that bends at least once.

[0219] Since the support part 8500 is configured to be bendable, power can be stably supplied to the aperture module 2 even when the aperture module 2 moves together with the lens module 2000.

[0220] At the same time, since the aperture module 2 can move together with the lens module 2000, the magnet part 510 and the coil part 520 (see Figure 19 ) included in the aperture module 2 can also move together with the lens module 2000.

[0221] Therefore, even when the lens module 2000 moves, the distance between the magnet part 510 and the coil part 520 of the aperture module 2 can be maintained, so that the driving stability of the aperture module 2 can be improved.

[0222] The fixed part 8100 can be coupled to the housing 1300. For example, the fixed part 8100 can be mounted on the upper inner surface of the housing 1300.

[0223] The housing 1300 may include a stepped portion 1310. The stepped portion 1310 may be disposed at a position that covers at least a part of the support portion 8500 of the connection substrate 8000 in the direction of the optical axis (Z-axis).

[0224] The stepped portion 1310 may extend from the upper surface of the housing 1300 in the direction of the optical axis (Z-axis), and may have a shape that curves and extends toward the optical axis (Z-axis).

[0225] The stepped portion 1310 (e.g., the surface that curves and extends toward the optical axis (Z-axis)) and the support portion 8500 of the connection substrate 8000 may face each other in the direction of the optical axis (Z-axis).

[0226] As Figure 9 shown, the stepped portion 1310 may have a shape that faces a part of the support portion 8500 in the direction of the optical axis (Z-axis). Alternatively, as Figure 12 shown, the stepped portion 1310 may have a shape that faces the entire support portion 8500 in the direction of the optical axis (Z-axis).

[0227] When the aperture module 2 moves together with the lens module 2000, the support portion 8500 of the connection substrate 8000 may bend. In this case, the stepped portion 1310 may limit the range of bending of the support portion 8500 of the connection substrate 8000. Therefore, excessive deformation of the support portion 8500 of the connection substrate 8000 can be prevented.

[0228] The connection substrate 8000 may include a connection portion 8700 and a bending portion 8710. The connection portion 8700 may be connected to the fixed portion 8100 through the bending portion 8710, and may extend in the direction of the optical axis (Z-axis). The connection portion 8700 of the connection substrate 8000 may be mounted on the inner surface of the housing 1300. In addition, one end of the connection portion 8700 may be connected to the printed circuit board 9200 of the image sensor module 9000.

[0229] The bending portion 8710 may be configured to connect the connection portion 8700 to the fixed portion 8100, and at least a part of the bending portion 8710 may have a curvature. The bending portion 8710 may be spaced apart from the housing 1300.

[0230] Figures 14 to 16 is a diagram showing a modified example of the connection substrate.

[0231] Referring to Figure 14 , the connection substrate 8000' may include a fixed portion 8100, a moving portion 8300, and a support portion 8500'. The connection substrate 8000' may be an RFPCB.

[0232] The moving part 8300 can be disposed inside the fixed part 8100, and the supporting part 8500' can be disposed between the fixed part 8100 and the moving part 8300.

[0233] Connection pads can be respectively disposed on one side and the other side of the moving part 8300, and the aperture substrate 540 can be coupled to the connection pads of the moving part 8300.

[0234] The supporting part 8500' can be disposed between the moving part 8300 and the fixed part 8100, and can connect the moving part 8300 to the fixed part 8100. The supporting part 8500' can be a flexible PCB. When the moving part 8300 moves, the supporting part 8500' disposed between the moving part 8300 and the fixed part 8100 can bend.

[0235] The supporting part 8500' can extend along the periphery of the inside of the fixed part 8100. The supporting part 8500' can have a single bridge shape or multiple bridge shapes.

[0236] A part of the supporting part 8500' can be connected to the moving part 8300, and another part of the supporting part 8500' can be connected to the fixed part 8100.

[0237] The fixed part 8100 can include a first coupling part 8110 and a second coupling part 8120, and the moving part 8300 can include a third coupling part 8310 and a fourth coupling part 8320.

[0238] The first coupling part 8110 and the second coupling part 8120 can be disposed on opposite sides of each other with respect to the optical axis (Z-axis), and the third coupling part 8310 and the fourth coupling part 8320 can be disposed on opposite sides of each other with respect to the optical axis (Z-axis).

[0239] Connection pads can be respectively disposed in the third coupling part 8310 and the fourth coupling part 8320.

[0240] The first coupling part 8110 and the second coupling part 8120 can have a shape protruding from the fixed part 8100 toward the moving part 8300, and the third coupling part 8310 and the fourth coupling part 8320 can have a shape protruding from the moving part 8300 toward the fixed part 8100.

[0241] The conceptual line connecting the first coupling part 8110 to the second coupling part 8120 and the conceptual line connecting the third coupling part 8310 to the fourth coupling part 8320 can be perpendicular to each other.

[0242] The support portion 8500' can be connected to the fixed portion 8100 through the first coupling portion 8110 and the second coupling portion 8120. In addition, the support portion 8500' can be connected to the moving portion 8300 through the third coupling portion 8310 and the fourth coupling portion 8320.

[0243] For example, the first coupling portion 8110 and the second coupling portion 8120 can protrude and extend from the fixed portion 8100 and can be spaced apart from the moving portion 8300. In addition, the third coupling portion 8310 and the fourth coupling portion 8320 can protrude and extend from the moving portion 8300 and can be spaced apart from the fixed portion 8100.

[0244] The support portion 8500' can extend along the perimeter of the inner side of the fixed portion 8100 and can be connected to the first coupling portion 8110 to the fourth coupling portion 8320.

[0245] For example, the support portion 8500' can have a shape that connects the first coupling portion 8110 to the third coupling portion 8310, connects the second coupling portion 8120 to the third coupling portion 8310, connects the first coupling portion 8110 to the fourth coupling portion 8320, and connects the second coupling portion 8120 to the fourth coupling portion 8320.

[0246] In an embodiment, the first coupling portion 8110 and the second coupling portion 8120 can be spaced apart from each other in the second axis (Y-axis) direction. In addition, the third coupling portion 8310 and the fourth coupling portion 8320 can be spaced apart from each other in the first axis (X-axis) direction.

[0247] Therefore, the moving portion 8300 can move while being elastically supported by the support portion 8500'.

[0248] Referring to Figure 15 , the support portion 8500'' of the connection substrate 8000'' can include a first support portion 8510 and a second support portion 8520.

[0249] The first support portion 8510 can extend between the first coupling portion 8110 and the third coupling portion 8310. For example, one side of the first support portion 8510 can be connected to the first coupling portion 8110, and the other side of the first support portion 8510 can be connected to the third coupling portion 8310.

[0250] The second support portion 8520 can extend between the second coupling portion 8120 and the fourth coupling portion 8320. For example, one side of the second support portion 8520 can be connected to the second coupling portion 8120, and the other side of the second support portion 8520 can be connected to the fourth coupling portion 8320.

[0251] Reference Figure 16 Figure 16 , the first coupling portion 8110 connecting the substrate 8000”’ can be disposed adjacent to the fourth coupling portion 8320. In addition, the second coupling portion 8120 can be disposed adjacent to the third coupling portion 8310.

[0252] For example, at least a part of the first coupling portion 8110 and the fourth coupling portion 8320 can overlap in the first axis (X-axis) direction or the second axis (Y-axis) direction.

[0253] In addition, at least a part of the second coupling portion 8120 and the third coupling portion 8310 can overlap in the first axis (X-axis) direction or the second axis (Y-axis) direction.

[0254] The first support portion 8510 can extend between the first coupling portion 8110 and the third coupling portion 8310. For example, one side of the first support portion 8510 can be connected to the first coupling portion 8110, and the other side of the first support portion 8510 can be connected to the third coupling portion 8310.

[0255] The second support portion 8520 can extend between the second coupling portion 8120 and the fourth coupling portion 8320. For example, one side of the second support portion 8520 can be connected to the second coupling portion 8120, and the other side of the second support portion 8520 can be connected to the fourth coupling portion 8320.

[0256] Figure 17 is a perspective view showing a state where the aperture module according to an embodiment has a relatively small aperture. Figure 18 is a perspective view showing a state where the aperture module according to an embodiment has a relatively large aperture.

[0257] Figure 19 is an exploded perspective view showing the aperture module according to an embodiment. Figure 20 is an exploded perspective view showing an example in which the aperture driving unit is disposed on the base and the rotating body.

[0258] Reference Figures 17 to 20 Figures 17 to 20 , the aperture module 2 according to an embodiment can include a base 400, a rotating body 300, a plurality of blades 200, and an aperture driving unit 500.

[0259] The base 400 can be coupled to the camera actuator 3. For example, the base 400 can be coupled to the lens module 2000 of the camera actuator 3. In this case, when the lens module 2000 moves, the aperture module 2 can move together with the lens module 2000.

[0260] The rotating body 300 can rotate relative to the base 400. For example, the rotating body 300 can be spaced apart from the base 400 in the optical axis (Z-axis) direction and can rotate relative to the base 400. When the rotating body 300 rotates, the size of the aperture 210 of the aperture module 2 can change.

[0261] A plurality of blades 200 can form the aperture 210. A part of each blade can be arranged to overlap with other blades in the optical axis (Z-axis) direction. For example, a group of a plurality of blades (e.g., three blades) and another group of a plurality of blades (e.g., three blades) can be sequentially arranged in the optical axis (Z-axis) direction. Here, a part of one blade can be arranged to overlap with the other two blades in the optical axis (Z-axis) direction.

[0262] In an embodiment, a total of six blades can be provided, three blades can form a group, and two groups of blades can be stacked into two layers, but the number of the plurality of blades 200 is not limited thereto.

[0263] The aperture 210 can be defined by the surface of each blade facing the optical axis (Z-axis). The position of each blade can be changed by the aperture driving unit 500. Therefore, the size of the aperture 210 can vary according to the position of each blade.

[0264] For example, as Figure 17 and Figure 18 shown, the size of the aperture 210 can be reduced or increased by the rotation of each blade.

[0265] The plurality of blades 200 can be connected to the base 400 and the rotating body 300. Since each of the blades can have the same shape, a single blade will be described below.

[0266] The blade can include a through hole 220. For example, the blade can have a through hole 220 at the outer end, and the through hole 220 can have a shape that penetrates the blade in the optical axis (Z-axis) direction.

[0267] The through hole 220 of the blade can be connected to the base 400. For example, a protrusion 410 protruding in the optical axis (Z-axis) direction can be provided on the base 400, and the protrusion 410 can be connected to the through hole 220 of the blade. Similar to the plurality of blades 200, a plurality of protrusions 410 can be provided.

[0268] The protrusion 410 can form the rotation axis of the blade. The protrusion 410 and the through hole 220 can have corresponding sizes.

[0269] In addition, the blade can include a guide hole 230. For example, the blade can have a guide hole 230 provided at a position spaced apart from the through hole 220.

[0270] The guiding hole 230 of the blade can be coupled to the rotating body 300. For example, guiding protrusions 310 protruding in the optical axis (Z-axis) direction can be provided on the rotating body 300, and the guiding protrusions 310 can be coupled to the guiding hole 230 of the blade. Similar to the plurality of blades 200, a plurality of guiding protrusions 310 can be provided.

[0271] The size of the guiding hole 230 can be larger than the size of the guiding protrusion 310. For example, the width of the guiding hole 230 can correspond to the diameter of the guiding protrusion 310, and the length of the guiding hole 230 can be larger than the diameter of the guiding protrusion 310.

[0272] The shape of the guiding hole 230 is not limited thereto. For example, when the structure can move the position of the blade in combination with the movement of the rotating body 300, the shape of the guiding hole 230 can be changed.

[0273] Therefore, when the rotating body 300 rotates, the guiding protrusion 310 can move in the guiding hole 230, and thus, the blade can rotate using the protrusion 410 of the base 400 as a rotation axis.

[0274] The aperture module 2 according to an embodiment may further include a cover 100. The cover 100 can be coupled to the base 400. The plurality of blades 200 and the rotating body 300 can be provided in the space between the cover 100 and the base 400.

[0275] The first spacer 110 can be provided between the plurality of blades 200 and the cover 100. For example, the first spacer 110 can be coupled to the rotating body 300 and can be provided between the plurality of blades 200 and the cover 100. The first spacer 110 can cover at least a part of the upper surface of the plurality of blades 200. The surface of the first spacer 110 can be coated with black.

[0276] The first spacer 110 can have through holes through which light passes, and the size of the through holes of the first spacer 110 can be larger than the maximum size of the aperture 210 formed by the plurality of blades 200.

[0277] The second spacer 120 can be provided between the rotating body 300 and the plurality of blades 200. For example, the second spacer 120 can be coupled to the rotating body 300 and can be provided between the rotating body 300 and the plurality of blades 200. The second spacer 120 can cover at least a part of the lower surface of the plurality of blades 200. The surface of the second spacer 120 can be coated with black.

[0278] The second spacer 120 can have through holes through which light passes, and the size of the through holes of the second spacer 120 can be larger than the maximum size of the aperture 210 formed by the plurality of blades 200. In addition, the size of the through holes of the second spacer 120 can be smaller than the size of the through holes of the first spacer 110.

[0279] The aperture driving unit 500 may move the rotating body 300 to change the size of the aperture 210. For example, the aperture driving unit 500 may rotate the rotating body 300 by generating a driving force.

[0280] When the rotating body 300 rotates, the guiding protrusions 310 of the rotating body 300 may move in the guiding holes 230 of the plurality of blades 200, and thus, the plurality of blades 200 may rotate using the protrusions 410 of the base 400 as a rotation axis, so that the size of the aperture 210 may be changed.

[0281] The aperture driving unit 500 may include a magnet part 510 and a coil part 520. The magnet part 510 and the coil part 520 may be arranged to face each other in the optical axis (Z-axis) direction.

[0282] The magnet part 510 may be provided on one of the rotating body 300 and the base 400, and the coil part 520 may be provided on the other of the rotating body 300 and the base 400.

[0283] For example, the magnet part 510 may be mounted on the rotating body 300. As an example, the magnet part 510 may be mounted on the lower surface of the rotating body 300.

[0284] The magnet part 510 may include a plurality of aperture magnets spaced apart from each other. As an example, the magnet part 510 may include a first aperture magnet 511 and a second aperture magnet 512 provided on opposite sides with respect to the optical axis (Z-axis).

[0285] Each of the first aperture magnet 511 and the second aperture magnet 512 may be magnetized such that one surface (e.g., the surface facing the coil part 520) may have both N and S poles. As an example, an N pole, a neutral zone, and an S pole may be sequentially provided on one surface of the first aperture magnet 511 and the second aperture magnet 512 that faces the coil part 520 in a direction perpendicular to the optical axis (Z-axis) (e.g., the rotation direction of the rotating body 300).

[0286] The coil part 520 may be arranged to face the magnet part 510. For example, the coil part 520 may be arranged to face the magnet part 510 in the optical axis (Z-axis) direction.

[0287] The coil part 520 may be provided on the aperture substrate 540, and the aperture substrate 540 may be mounted on the base 400 such that the magnet part 510 and the coil part 520 may face each other in the optical axis (Z-axis) direction. As an example, the coil part 520 may be provided on one surface of the aperture substrate 540. The aperture substrate 540 may be mounted on the upper surface of the base 400.

[0288] In addition, the aperture substrate 540 may include a first extension portion 541 that extends from the upper surface side of the base 400 to the side surface of the base 400. The first extension portion 541 may be connected to the connection substrate 8000, which will be described later.

[0289] The coil portion 520 may include a plurality of aperture coils. As an example, the coil portion 520 may include a first aperture coil 521 and a second aperture coil 522 that are disposed on opposite sides with respect to the optical axis (Z-axis).

[0290] The magnet portion 510 may be a moving member that is mounted on the rotating body 300 and rotates together with the rotating body 300, and the coil portion 520 may be a fixed member that is fixed to the base 400.

[0291] In another embodiment, the magnet portion 510 and the coil portion 520 may be arranged conversely and differently from the above example. In this case, since the coil portion 520 and the aperture substrate 540 are mounted on the rotating body 300 and rotate together with the rotating body 300, at least a part of the aperture substrate 540 may be configured to be flexible.

[0292] When power is applied to the coil portion 520, the rotating body 300 may rotate by the electromagnetic force between the magnet portion 510 and the coil portion 520.

[0293] In an embodiment, the aperture driving unit 500 (e.g., the magnet portion 510) may rotate to rotate the rotating body 300.

[0294] When the magnet linearly moves and the linear motion of the magnet is changed to the rotational motion of the rotating body, the rotating body may rotate by an external force without power being applied, and the size of the aperture may change, which may be problematic.

[0295] However, in this embodiment, the center of gravity of the aperture driving unit 500 (e.g., the magnet portion 510) may be set inside the rotation radius of the rotating body 300 so that the rotating body 300 does not rotate even when an external force is applied.

[0296] The rolling portion RB may be provided between the base 400 and the rotating body 300. For example, the rolling portion RB may be provided between the base 400 and the rotating body 300 so that friction can be reduced when the rotating body 300 rotates.

[0297] The rolling part RB may include a plurality of rolling balls spaced apart from each other in the circumferential direction of the rotating body 300. When the rotating body 300 rotates, the plurality of rolling balls may roll in the rotating direction of the rotating body 300. The rolling part RB may include three or more rolling balls. In this embodiment, the rolling part RB may include four rolling balls, but the number of the plurality of rolling balls is not limited when three or more rolling balls are included.

[0298] The traction yoke part 550 may be provided on the base 400. The traction yoke part 550 may be provided at a position facing the magnet part 510 in the optical axis (Z-axis) direction.

[0299] The traction yoke part 550 may be integrally coupled to the base 400 by insert injection. In this case, the traction yoke part 550 may be manufactured integrally with the base 400 by injecting a resin material into the mold while the traction yoke part 550 is fixed in the mold.

[0300] The traction yoke part 550 and the magnet part 510 may generate an attractive force between each other. For example, the traction yoke part 550 may be a magnetic material. The attractive force may act between the magnet part 510 and the traction yoke part 550 in the optical axis (Z-axis) direction.

[0301] The rolling part RB may be in contact with the base 400 and the rotating body 300 respectively by the attractive force of the magnet part 510 and the traction yoke part 550.

[0302] The traction yoke part 550 may include a first traction yoke 551 and a second traction yoke 552. The first traction yoke 551 may face the first aperture magnet 511 in the optical axis (Z-axis) direction, and the second traction yoke 552 may face the second aperture magnet 512 in the optical axis (Z-axis) direction.

[0303] Figure 21 It is a plan view showing a state in which a rolling part is provided on a base. Figure 22 It is a perspective view showing a state in which a traction yoke part and an auxiliary yoke are separated from a base. Figure 23 It is a view showing an arrangement form of a magnet part, a traction yoke part, and an auxiliary yoke.

[0304] Figure 24 is along Figure 17 A cross-sectional view of the aperture module taken along line II-II'. Figure 25 It is a plan view showing a guide groove in which a rolling part is provided.

[0305] Refer to Figure 21, the rolling part RB may include a first rolling member RB1 and a second rolling member RB2, and may further include a third rolling member RB3. The first rolling member RB1, the second rolling member RB2, and the third rolling member RB3 may be spaced apart from each other in the circumferential direction of the base 400.

[0306] Each of the first rolling member RB1, the second rolling member RB2, and the third rolling member RB3 may include one or more rolling balls.

[0307] The number of rolling balls included in the first rolling member RB1 may be greater than the number of rolling balls included in the second rolling member RB2. In addition, the number of rolling balls included in the first rolling member RB1 may be greater than the number of rolling balls included in the third rolling member RB3.

[0308] In an embodiment, the first rolling member RB1 may include at least two rolling balls spaced apart from each other in the circumferential direction of the base 400. For example, the first rolling member RB1 may include a first rolling ball RB1a and a second rolling ball RB1b. The second rolling member RB2 may include a rolling ball (e.g., a third rolling ball), and the third rolling member RB3 may include at least one rolling ball (e.g., a fourth rolling ball).

[0309] The first rolling member RB1 may be arranged closer to the first aperture magnet 511 than to the second aperture magnet 512. The second rolling member RB2 may be arranged closer to the second aperture magnet 512 than to the first aperture magnet 511. There is no limitation on the relative position of the third rolling member RB3 with respect to the magnet portion 510.

[0310] The guide groove portion may be provided on the surfaces of the base 400 and the rotating body 300 that face each other. For example, the first guide groove portion 420 may be provided on the base 400, and the second guide groove portion 320 may be provided on the rotating body 300.

[0311] The rolling part RB may be provided between the first guide groove portion 420 and the second guide groove portion 320.

[0312] The first guide groove portion 420 may include a 1-1 guide groove 421, a 1-2 guide groove 422, a 1-3 guide groove 423, and a 1-4 guide groove 424. The 1-1 guide groove 421 to the 1-4 guide groove 424 may be spaced apart in the circumferential direction of the base 400.

[0313] Each of the first guiding grooves 421 to 424 may include a bottom surface formed on one surface (e.g., the upper surface) of the base 400 and side surfaces extending from the bottom surface in the direction of the optical axis (Z-axis). For example, each of the first guiding grooves 421 to 424 may have an "L"-shaped cross section.

[0314] The second guiding groove portion 320 may include a 2-1 guiding groove 321, a 2-2 guiding groove 322, a 2-3 guiding groove 323, and a 2-4 guiding groove 324. The 2-1 guiding groove 321 to the 2-4 guiding groove 324 may be spaced apart in the circumferential direction of the rotating body 300.

[0315] Each of the 2-1 guiding groove 321 to the 2-4 guiding groove 324 may include a bottom surface formed on one surface (e.g., the lower surface) of the rotating body 300 and side surfaces extending from the bottom surface in the direction of the optical axis (Z-axis). For example, each of the 2-1 guiding groove 321 to the 2-4 guiding groove 324 may have an "L"-shaped cross section.

[0316] The first guiding groove 421 and the 2-1 guiding groove 321 may be arranged to face each other, and one of the two rolling balls of the first rolling member RB1 (e.g., the first rolling ball RB1a) may be disposed in the space between the first guiding groove 421 and the 2-1 guiding groove 321.

[0317] The bottom surface of the first guiding groove 421 and the bottom surface of the 2-1 guiding groove 321 may face each other in the direction of the optical axis (Z-axis), and the side surface of the first guiding groove 421 and the side surface of the 2-1 guiding groove 321 may face each other in a direction perpendicular to the optical axis (Z-axis).

[0318] In addition, the first guiding groove 422 and the 2-2 guiding groove 322 may be arranged to face each other, and the other of the two rolling balls of the first rolling member RB1 (e.g., the second rolling ball RB1b) may be disposed in the space between the first guiding groove 422 and the 2-2 guiding groove 322.

[0319] The bottom surface of the first guiding groove 422 and the bottom surface of the 2-2 guiding groove 322 may face each other in the direction of the optical axis (Z-axis), and the side surface of the first guiding groove 422 and the side surface of the 2-2 guiding groove 322 may face each other in a direction perpendicular to the optical axis (Z-axis).

[0320] The first rolling ball RB1a of the first rolling member RB1 may be in two-point contact with each of the first guiding groove 421 and the 2-1 guiding groove 321.

[0321] For example, the first rolling ball RB1a can be in two-point contact with the 1-1 guide groove 421 and in two-point contact with the 2-1 guide groove 321. As an example, the first rolling ball RB1a can contact the bottom surface and the side surface of the 1-1 guide groove 421, and can contact the bottom surface and the side surface of the 2-1 guide groove 321.

[0322] The contact point on the bottom surface of the 1-1 guide groove 421 and the contact point on the bottom surface of the 2-1 guide groove 321 can face each other in the optical axis (Z-axis) direction, and the contact point on the side surface of the 1-1 guide groove 421 and the contact point on the side surface of the 2-1 guide groove 321 can face each other in a direction perpendicular to the optical axis (Z-axis).

[0323] For example, the conceptual line connecting the contact point on the bottom surface of the 1-1 guide groove 421 to the contact point on the bottom surface of the 2-1 guide groove 321 and the conceptual line connecting the contact point on the side surface of the 1-1 guide groove 421 to the contact point on the side surface of the 2-1 guide groove 321 can form a "+" shape.

[0324] The second rolling ball RB1b of the first rolling member RB1 can be in two-point contact with each of the 1-2 guide groove 422 and the 2-2 guide groove 322.

[0325] For example, the second rolling ball RB1b can be in two-point contact with the 1-2 guide groove 422 and can be in two-point contact with the 2-2 guide groove 322. As an example, the second rolling ball RB1b can contact the bottom surface and the side surface of the 1-2 guide groove 422, and can contact the bottom surface and the side surface of the 2-2 guide groove 322.

[0326] The contact point on the bottom surface of the 1-2 guide groove 422 and the contact point on the bottom surface of the 2-2 guide groove 322 can face each other in the optical axis (Z-axis) direction, and the contact point on the side surface of the 1-2 guide groove 422 and the contact point on the side surface of the 2-2 guide groove 322 can face each other in a direction perpendicular to the optical axis (Z-axis).

[0327] For example, the conceptual line connecting the contact point on the bottom surface of the 1-2 guide groove 422 to the contact point on the bottom surface of the 2-2 guide groove 322 and the conceptual line connecting the contact point on the side surface of the 1-2 guide groove 422 to the contact point on the side surface of the 2-2 guide groove 322 can form a "+" shape.

[0328] The first rolling member RB1, the 1-1 guide groove 421, the 1-2 guide groove 422, the 2-1 guide groove 321, and the 2-2 guide groove 322 can be used as main guides for guiding the rotation of the rotating body 300.

[0329] The 1-3 guide groove 423 and the 2-3 guide groove 323 can be arranged to face each other, and the second rolling member RB2 can be arranged in the space between the 1-3 guide groove 423 and the 2-3 guide groove 323.

[0330] The bottom surfaces of the 1-3 guide groove 423 and the 2-3 guide groove 323 can face each other in the direction of the optical axis (Z-axis), and the side surfaces of the 1-3 guide groove 423 and the 2-3 guide groove 323 can face each other in a direction perpendicular to the optical axis (Z-axis).

[0331] The second rolling member RB2 can be in contact with the 1-3 guide groove 423 and the 2-3 guide groove 323. The number of contact points between the second rolling member RB2 and the 1-3 guide groove 423 and the 2-3 guide groove 323 can be two or three.

[0332] For example, when the number of contact points between the second rolling member RB2 and the 1-3 guide groove 423 and the 2-3 guide groove 323 is two, the second rolling member RB2 can be in contact with the bottom surfaces of the 1-3 guide groove 423 and the 2-3 guide groove 323.

[0333] When the number of contact points between the second rolling member RB2 and the 1-3 guide groove 423 and the 2-3 guide groove 323 is three, the second rolling member RB2 can be in contact with the bottom surfaces of the 1-3 guide groove 423 and the 2-3 guide groove 323, and can be in contact with one of the side surfaces of the 1-3 guide groove 423 and the 2-3 guide groove 323.

[0334] The distance between the surfaces of the 1-3 guide groove 423 and the 2-3 guide groove 323 that face each other in a direction perpendicular to the optical axis (Z-axis) (for example, the side surfaces of the 1-3 guide groove 423 and the 2-3 guide groove 323) can be greater than the diameter of the second rolling member RB2.

[0335] The second rolling member RB2, the 1-3 guide groove 423 and the 2-3 guide groove 323 can be used as auxiliary guides for supporting the rotation of the rotating body 300.

[0336] When observed in the direction of the optical axis (Z-axis), the rotating body 300 can be in three-point contact with the base 400 through the first rolling member RB1 and the second rolling member RB2 (for example, a triangular support area).

[0337] The 1-4 guide groove 424 and the 2-4 guide groove 324 can be arranged to face each other, and the third rolling member RB3 can be arranged in the space between the 1-4 guide groove 424 and the 2-4 guide groove 324.

[0338] The bottom surface of the 1-4 guide groove 424 and the bottom surface of the 2-4 guide groove 324 can face each other in the optical axis (Z-axis) direction, and the side surface of the 1-4 guide groove 424 and the side surface of the 2-4 guide groove 324 can face each other in a direction perpendicular to the optical axis (Z-axis).

[0339] The third rolling member RB3 can be in contact with at least one of the 1-4 guide groove 424 and the 2-4 guide groove 324. The number of contact points between the third rolling member RB3 and the 1-4 guide groove 424 and the 2-4 guide groove 324 can be one or two.

[0340] For example, when the number of contact points between the third rolling member RB3 and the 1-4 guide groove 424 and the 2-4 guide groove 324 is one, the third rolling member RB3 can be in contact with the bottom surface of the 1-4 guide groove 424 or the bottom surface of the 2-4 guide groove 324.

[0341] When the number of contact points between the third rolling member RB3 and the 1-4 guide groove 424 and the 2-4 guide groove 324 is two, the third rolling member RB3 can be in one-point contact with one of the bottom surfaces of the 1-4 guide groove 424 and the 2-4 guide groove 324, and in one-point contact with one of the side surfaces of the 1-4 guide groove 424 and the 2-4 guide groove 324.

[0342] In an embodiment, the distance between the bottom surface of the 1-4 guide groove 424 and the bottom surface of the 2-4 guide groove 324 in the optical axis (Z-axis) direction can be greater than the distance between the bottom surface of the 1-1 guide groove 421 and the bottom surface of the 2-1 guide groove 321 in the optical axis (Z-axis) direction.

[0343] In an embodiment, the distance between the bottom surface of the 1-4 guide groove 424 and the bottom surface of the 2-4 guide groove 324 in the optical axis (Z-axis) direction can be greater than the diameter of the rolling ball of the third rolling member RB3.

[0344] In an embodiment, the diameter of the rolling ball of the third rolling member RB3 can be smaller than the diameter of the rolling ball of the first rolling member RB1 and the diameter of the rolling ball of the second rolling member RB2.

[0345] The third rolling member RB3 can be used to prevent the rotating body 300 from tilting relative to the base 400 during an external impact. That is, by preventing the rotating body 300 from tilting relative to the base 400 during an external impact, separation of the rolling part RB from the base 400 and the rotating body 300 can be prevented.

[0346] However, the third rolling member RB3 can be an optional component, and when the third rolling member RB3 is not provided, the inclination of the rotating body 300 can be prevented by adjusting the positions of the first rolling member RB1 and the second rolling member RB2.

[0347] When viewed in the optical axis (Z-axis) direction, the rotating body 300 can be in three-point contact with the base 400 through the first rolling member RB1 and the second rolling member RB2.

[0348] In this case, in order to enable the rotating body 300 to rotate stably, the center point CP of the attractive force acting between the magnet portion 510 and the traction yoke portion 550 may need to be set in the support area connecting the contact point of the first rolling member RB1 and the base 400 (or the rotating body 300) and the contact point of the second rolling member RB2 and the base 400 (or the rotating body 300).

[0349] In addition, since the width of the support area increases toward the first rolling member RB1, it may be desirable to set the center point CP of the attractive force toward the first rolling member RB1.

[0350] For this purpose, by configuring the sizes of the first traction yoke 551 and the second traction yoke 552 differently, the center point CP of the attractive force can be set closer to the first rolling member RB1.

[0351] In an embodiment, the area of the first traction yoke 551 facing the first aperture magnet 511 can be larger than the area of the second traction yoke 552 facing the second aperture magnet 512.

[0352] In other words, by configuring the size of the first traction yoke 551 to be larger than the size of the second traction yoke 552, the center point CP of the attractive force can be set closer to the first rolling member RB1.

[0353] As another example, by configuring the size of the first aperture magnet 511 to be larger than the size of the second aperture magnet 512, the center point CP of the attractive force can be set closer to the first rolling member RB1.

[0354] As another example, by configuring the distance between the first aperture magnet 511 and the first traction yoke 551 in the optical axis (Z-axis) direction to be smaller than the distance between the second aperture magnet 512 and the second traction yoke 552 in the optical axis (Z-axis) direction, the center point CP of the attractive force can be set closer to the first rolling member RB1.

[0355] The area of a part of the first traction yoke 551 can be configured to be larger than that of another part. For example, the first traction yoke 551 can have a rectangular shape and a protrusion protruding from the long side of the rectangular shape. Therefore, when power is not applied to the aperture driving unit 500, the relative position of the first aperture magnet 511 with respect to the first traction yoke 551 can be kept constant.

[0356] In an embodiment, the first traction yoke 551 can have an asymmetric shape with respect to the center of the first traction yoke 551. For example, with respect to a conceptual line passing through the optical axis (Z-axis) and intersecting the center of the first traction yoke 551, one area can be larger than the other area.

[0357] As another example, the width of the first traction yoke 551 can be configured to increase from one end on the length direction side to the other end on the length direction side.

[0358] As another example, the first traction yoke 551 can be provided as two yokes arranged adjacent to each other. In this case, the size of one of the yokes can be larger than the size of the other yoke.

[0359] Meanwhile, referring to Figure 22 , the aperture module 2 according to an embodiment may further include an auxiliary yoke 560.

[0360] The auxiliary yoke 560 can be arranged to be closer to the first aperture magnet 511 than to the second aperture magnet 512.

[0361] When viewed in the optical axis (Z-axis) direction, the first aperture magnet 511, the first traction yoke 551, and the auxiliary yoke 560 can be arranged in the space between the first rolling ball RB1a and the second rolling ball RB1b.

[0362] The auxiliary yoke 560 can be arranged on the inner surface of the surface of the base 400 that extends in the optical axis (Z-axis) direction. For example, the auxiliary yoke 560 can be arranged such that at least a part of it can face the first aperture magnet 511 in a direction perpendicular to the optical axis (Z-axis). The auxiliary yoke 560 can be a magnetic material.

[0363] The auxiliary yoke 560 can be integrally coupled to the base 400 by insert injection. In this case, the auxiliary yoke 560 can be manufactured to be integrated into the base 400 by injecting a resin material into a mold while the auxiliary yoke 560 is fixed in the mold.

[0364] In an embodiment, the position of the upper end of the auxiliary yoke 560 in the optical axis (Z-axis) direction can be set between the upper surface and the lower surface of the first aperture magnet 511.

[0365] The attractive force can act in the direction of the optical axis (Z-axis) through the first aperture magnet 511 and the first traction yoke 551, and the attractive force can act in a direction intersecting the optical axis (Z-axis) (for example, a direction perpendicular to the optical axis (Z-axis) or a direction inclined downward while intersecting the optical axis (Z-axis)) through the first aperture magnet 511 and the auxiliary yoke 560.

[0366] In other words, the attractive force can act on the first aperture magnet 511 in at least two directions intersecting each other.

[0367] Due to the attractive force acting between the first aperture magnet 511 and the first traction yoke 551, the rotating body 300 including the first aperture magnet 511 mounted on the rotating body 300 can move toward the base 400 including the first traction yoke 551 mounted on the base 400 in the direction of the optical axis (Z-axis).

[0368] Therefore, due to the attractive force acting between the first aperture magnet 511 and the first traction yoke 551, the first rolling ball RB1a can contact the bottom surfaces of the 1-1 guide groove 421 and the 2-1 guide groove 321.

[0369] Due to the attractive force acting between the first aperture magnet 511 and the first traction yoke 551, the second rolling ball RB1b can contact the bottom surfaces of the 1-2 guide groove 422 and the 2-2 guide groove 322.

[0370] Due to the attractive force acting between the first aperture magnet 511 and the auxiliary yoke 560, the rotating body 300 including the first aperture magnet 511 thereon can be pulled toward the base 400 including the auxiliary yoke 560 thereon in a direction intersecting the optical axis (Z-axis).

[0371] Therefore, due to the attractive force acting between the first aperture magnet 511 and the auxiliary yoke 560, the first rolling ball RB1a can contact the side surfaces of the 1-1 guide groove 421 and the 2-1 guide groove 321.

[0372] Due to the attractive force acting between the first aperture magnet 511 and the auxiliary yoke 560, the second rolling ball RB1b can contact the side surfaces of the 1-2 guide groove 422 and the 2-2 guide groove 322.

[0373] Each of the side surfaces of the 1-1 guide groove 421, the side surfaces of the 1-2 guide groove 422, the side surfaces of the 2-1 guide groove 321, and the side surfaces of the 2-2 guide groove 322 can be curved surfaces.

[0374] For example, the radius of curvature of the side surface of the 1-1 guide groove 421 and the radius of curvature of the side surface of the 1-2 guide groove 422 may be the same. In addition, the radius of curvature of the side surface of the 2-1 guide groove 321 and the radius of curvature of the side surface of the 2-2 guide groove 322 may be the same.

[0375] The conceptual circles passing through the side surfaces of the 1-1 guide groove 421 and the 1-2 guide groove 422 and the conceptual circles passing through the side surfaces of the 2-1 guide groove 321 and the 2-2 guide groove 322 may be concentric.

[0376] The auxiliary yoke 560 may be disposed on the outer side with respect to the conceptual circle passing through the side surfaces of the 1-1 guide groove 421 and the 1-2 guide groove 422 in a direction perpendicular to the optical axis (Z-axis). In addition, the auxiliary yoke 560 may be disposed on the outer side with respect to the imaginary circle passing through the side surfaces of the 2-1 guide groove 321 and the 2-2 guide groove 322 in a direction perpendicular to the optical axis (Z-axis).

[0377] When a driving force is generated by the aperture driving unit 500, the first rolling ball RB1a may roll along the side surfaces of the 1-1 guide groove 421 and the 2-1 guide groove 321, and the second rolling ball RB1b may roll along the side surfaces of the 1-2 guide groove 422 and the 2-2 guide groove 322.

[0378] Therefore, the rotating body 300 may rotate by being guided by the first rolling ball RB1a and the second rolling ball RB1b.

[0379] When the rotating body 300 rotates, the second rolling member RB2 may remain in contact with the bottom surfaces of the 1-3 guide groove 423 and the 2-3 guide groove 323, and the rotating body 300 may maintain three-point contact with the rolling portion RB.

[0380] In an embodiment, the aperture module 2 may detect the position of the rotating body 300.

[0381] To this end, an aperture position sensor 530 may be provided. The aperture position sensor 530 may be provided on the aperture substrate 540 to face the magnet portion 510. For example, the aperture position sensor 530 may face at least one of the first aperture magnet 511 and the second aperture magnet 512 in the optical axis (Z-axis) direction.

[0382] The aperture position sensor 530 may be a Hall sensor.

[0383] According to the foregoing embodiments, the camera module may improve driving reliability.

[0384] While specific examples have been shown and described above, it will be apparent after understanding the present disclosure that various changes in form and detail may be made to these examples without departing from the spirit and scope of the claims and their equivalents. The examples described herein are to be understood in a descriptive sense only and not for purposes of limitation. The description of a feature or aspect in each example should be considered as applicable to similar features or aspects in other examples. Appropriate results may still be achieved if the described techniques are performed in a different order, and / or if the components in the described systems, architectures, devices, or circuits are combined in a different manner and / or replaced or supplemented by other components or their equivalents. Accordingly, the scope of the present disclosure is not limited by the specific embodiments, but by the claims and their equivalents, and all variations within the scope of the claims and their equivalents should be understood to be included in the present disclosure.

Claims

1. A camera module, characterized in that, The camera module includes: a housing; a lens module disposed in the housing and configured to move in one or more axial directions among three axes intersecting each other, the lens module including a lens barrel and a lens holder coupled together; and an aperture module coupled to the lens module and configured to move together with the lens module, wherein the lens holder includes a first adhesive groove and a second adhesive groove, the first adhesive groove is bonded to the lens barrel, and a part of the aperture module is received in the second adhesive groove, and wherein a blocking member is disposed between the first adhesive groove and the second adhesive groove.

2. The camera module according to claim 1, wherein The lens barrel is bonded to the lens holder by an adhesive applied to the first adhesive groove.

3. The camera module according to claim 1, characterized in that, The aperture module is bonded to the lens barrel and the lens holder by an adhesive applied to the second adhesive groove.

4. The camera module according to claim 3, wherein The lower surface of the aperture module is bonded to the upper surface of the lens barrel by the adhesive.

5. The camera module according to claim 4, characterized in that, The aperture module includes a support protrusion received in the second adhesive groove, and wherein the support protrusion is spaced apart from the bottom surface of the second adhesive groove in the optical axis direction while being received in the second adhesive groove.

6. The camera module according to claim 1, wherein The aperture module includes a support protrusion received in the second adhesive groove, and wherein the support protrusion is spaced apart from the inner surface of the second adhesive groove and the outer surface of the lens barrel while being received in the second adhesive groove.

7. The camera module according to claim 6, wherein The distance between the inner surface of the second adhesive groove and the outer surface of the lens barrel in a direction perpendicular to the optical axis is greater than the width of the support protrusion in the direction perpendicular to the optical axis.

8. The camera module according to claim 6, characterized in that, An adhesive is applied to the second adhesive groove, and the adhesive surrounds the support protrusion.

9. The camera module according to claim 8, wherein, The adhesive contacts the inner surface of the second adhesive groove, the outer surface of the support protrusion, and the outer surface of the lens barrel.

10. The camera module according to claim 1, characterized in that, The blocking member extends in the optical axis direction to separate the first adhesive groove and the second adhesive groove.

11. The camera module according to claim 1, characterized in that, The length of the second adhesive groove in the circumferential direction is longer than the length of the first adhesive groove in the circumferential direction.

12. The camera module according to claim 1, characterized in that, A part of the outer surface of the lens barrel faces the first adhesive groove and the second adhesive groove in a direction perpendicular to the optical axis.

13. The camera module according to claim 1, characterized in that, The camera module further includes: a connection substrate configured to supply power to the aperture module, and including a moving part coupled to the aperture module, a fixed part fixed to the housing, and a support part connecting the moving part to the fixed part.

14. The camera module according to claim 13, characterized in that, The camera module further includes: a printed circuit board coupled to the housing and having an image sensor disposed thereon, wherein the connection substrate further includes a connection part connecting the fixed part to the printed circuit board.

15. The camera module according to claim 1, characterized in that, The aperture module includes: a base; a rotating body configured to rotate relative to the base; a plurality of blades configured to move together with the rotation of the rotating body to form an aperture; a magnet part disposed on one of the base and the rotating body; A coil part, arranged to face the magnet part; and An aperture substrate, on which the coil part is arranged.

16. The camera module according to claim 15, wherein The camera module further includes: A printed circuit board, connected to the housing and having an image sensor arranged thereon; and A connection substrate, one side of which is connected to the aperture substrate and the other side of which is connected to the printed circuit board.

17. The camera module according to claim 1, wherein The aperture module and the lens module are configured to move together in the optical axis direction, a first axis direction perpendicular to the optical axis direction, and a second axis direction perpendicular to both the optical axis direction and the first axis direction.

Images