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 from Korean Patent Application No. 10-2023-0146329 filed on October 30, 2023, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein in its entirety for all purposes by reference. 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] The mobile camera module may include an aperture module for controlling the amount of light.

[0006] The lens module of the camera module can be moved 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] Furthermore, when the aperture module is configured to move together with the lens module, coupling reliability of 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 with understanding the present disclosure. No determination has been made, and no assertion is made, as to whether any of the above might be applicable as prior art with respect to the present disclosure. Summary of the invention

[0009] The purpose of providing this summary is to introduce a selection of concepts in a concise form, and these concepts will be further described in the following detailed description. This summary is not intended to identify the key features or essential features of the claimed subject matter, nor is it intended to be used to help determine the scope of the claimed subject matter.

[0010] In a 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 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 groove and a second adhesive groove, the first adhesive groove is coupled to the lens barrel, and a portion of the aperture module is accommodated in the second adhesive groove. A blocking member is provided between the first adhesive groove and the second adhesive groove.

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

[0012] The aperture module may be coupled 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 may be bonded to the upper surface of the lens barrel by an adhesive.

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

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

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

[0017] Adhesive may be applied to the second adhesive groove and surround the support protrusion.

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

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

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

[0021] A portion of an outer side surface of the lens barrel may be opposite to the first adhesive groove and the second adhesive groove in a direction perpendicular to the optical axis.

[0022] The camera module may 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 supporting part connecting the moving part to the fixed part.

[0023] The camera module may further include a printed circuit board coupled to the housing, and the image sensor is disposed on the printed circuit board. The connection substrate may further include a connection portion connecting the fixing portion 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 portion disposed on one of the base and the rotating body; a coil portion disposed to face the magnet portion; and an aperture substrate on which the coil portion is disposed.

[0025] The camera module may further include: a printed circuit board coupled to the housing and having the image sensor disposed 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 an 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 from the appended claims, the accompanying drawings and the following detailed description. BRIEF 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 an aperture module and a lens holder.

[0034] Figure 7 2 is a cross-sectional perspective view and a partially 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 a camera actuator.

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

[0037] Fig.10 Observed from below Fig. 9A three-dimensional diagram of the connection substrate and the housing.

[0038] Fig.11 is along Fig. 9 A cross-sectional view of the connection substrate and the housing taken along line II'.

[0039] Fig.12 is a perspective view showing a state in which a connection substrate and a housing are coupled to each other.

[0040] Fig.13 Observed from below Fig.12 A three-dimensional diagram of the connection substrate and the housing.

[0041] Figures 14 to 16 is a diagram showing a modified example of a connection substrate.

[0042] Fig.17 is a perspective view illustrating a state in which an aperture module has a relatively small aperture according to an embodiment of the present disclosure.

[0043] Fig.18 is a perspective view illustrating a state in which an aperture module has a relatively large aperture according to an embodiment of the present disclosure.

[0044] Fig.19 is an exploded perspective view showing an aperture module according to an embodiment of the present disclosure.

[0045] Fig. 20 : is an exploded perspective view showing an example in which the aperture driving unit is provided on a base and a rotating body.

[0046] Fig.21 It is a plan view showing a state in which the rolling part is provided on the base.

[0047] Fig. 22 It is a perspective view showing a state where the pulling yoke portion and the auxiliary yoke are separated from the base.

[0048] Fig.23 2 is a diagram showing the arrangement of a magnet portion, a pulling yoke portion, and an auxiliary yoke.

[0049] Fig.24 is along Fig.17 A cross-sectional view of the aperture module taken along line II-II'.

[0050] Fig.25 is a plan view showing a guide groove in which a rolling portion is provided.

[0051] Throughout the drawings and detailed description, unless otherwise described, the same reference numerals refer to the same elements. For purposes of clarity, illustration, and convenience, the drawings may not be drawn to scale, and the relative sizes, proportions, and depictions of elements in the drawings may be exaggerated. DETAILED DESCRIPTION

[0052] Hereinafter, 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 specific embodiments are provided to help the reader gain a comprehensive understanding of the methods, devices and / or systems described herein. However, various changes, modifications and equivalents of the methods, devices 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, it is not limited to the order set forth herein, but can be changed, which will be apparent after understanding the present disclosure. In addition, for greater clarity and brevity, descriptions of features known in the art may be omitted.

[0054] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein are provided merely to illustrate some of the many possible ways to implement the methods, devices, 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, a region, or a substrate is described as being “on,” “connected to,” or “coupled to” another element, the element may be directly “on,” “connected to,” or “coupled to” the other element, or one or more other elements may be present between the element and the other element. Conversely, when an element is described as being “directly on,” “directly connected to,” or “directly coupled to” another element, no other elements may be present between the element and the other element.

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

[0057] Although terms such as "first", "second" and "third" may be used herein to describe various members, components, regions, layers or portions, these members, components, regions, layers or portions are not limited by these terms. Rather, these terms are only used to distinguish one member, component, region, layer or portion from another member, component, region, layer or portion. Therefore, without departing from the teachings of the examples described herein, the first member, first component, first region, first layer or first portion mentioned in these examples may also be referred to as the second member, second component, second region, second layer or second portion.

[0058] Spatially relative terms such as "above", "above", "below", "below", etc. may be used herein for descriptive convenience to describe the relationship of one element relative to another element as shown in the accompanying drawings. In addition to covering the orientations depicted in the accompanying drawings, these spatially relative terms are intended to also cover different orientations of the device in use or operation. For example, if the device in the accompanying drawings is flipped, an element described as being "above" or "above" another element relative to the other element will be "below" or "below" the other element relative to the other element. Therefore, depending on the spatial orientation of the device, the term "above" covers both 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 spatially relative terms used herein should be interpreted accordingly.

[0059] The terms used herein are only used to describe various examples and are not used to limit the present disclosure. Unless the context clearly indicates otherwise, the terms "a", "an" and "the" are intended to include plural forms as well. The terms "include", "comprise" and "have" indicate the presence of the features, numbers, operations, components, elements and / or combinations thereof, but do not exclude the presence or addition of one or more other features, numbers, operations, components, elements and / or combinations thereof.

[0060] Variations in the shapes shown in the drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include variations in shapes that occur during manufacturing.

[0061] It should be noted that herein, use of the word “may” with respect to an example, such as regarding what an example may include or implement, means that there is at least one example in which such feature is included or implemented, and all examples are not limited thereto.

[0062] The features of the examples described herein may be combined in various ways that will be apparent after understanding the present disclosure. In addition, 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] Reference Figure 1 and Figure 2 , the camera module 1 according to the 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 can be moved in the direction of the optical axis (Z axis) for focus adjustment. In addition, the lens module 2000 can be moved 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 to the camera actuator 3. For example, the aperture module 2 may have an aperture 210 (see Fig.19 ), and the amount of light incident on the camera actuator 3 can be adjusted 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 are a cross-sectional perspective view and a partially enlarged view showing a camera module according to an embodiment.

[0071] Reference Figure 3 , the camera actuator 3 according to the embodiment may include a lens module 2000 and a housing 1100 accommodating the lens module 2000 .

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

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

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

[0075] Furthermore, the lens module 2000 may be moved in a direction perpendicular to the optical axis (Z-axis) direction, and may correct shaking during imaging.

[0076] The guide frame 3000 may be disposed between the carrier 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 a plurality of lenses are provided, the plurality of lenses may be installed in the lens barrel 2100 on the optical axis (Z axis).

[0078] The lens barrel 2100 may be coupled to the lens holder 2200. Therefore, 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 side surface of the lens barrel 2100 may contact an inner side 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 embodiment, an example in which the base 400 of the aperture module 2 can 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 can move together with the lens module 2000.

[0081] Reference Figure 4 and Figure 5The lens holder 2200 may have a first adhesive groove 2210 formed on an inner side surface thereof. When the lens barrel 2100 is received in the through hole of the lens holder 2200 , the outer side 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 securely coupled to the lens holder 2200. A plurality of first adhesive grooves 2210 may be spaced apart from each other on an inner side surface of the lens holder 2200.

[0083] At the same time, refer to Figure 6 and Figure 7 , the aperture module 2 may be coupled to the lens bracket 2200. For example, the base 400 of the aperture module 2 may be coupled to the lens bracket 2200.

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

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

[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. In the case where the support protrusion 430 is disposed in the second adhesive groove 2230, the support protrusion 430 may be spaced apart from the inner side surface of the second adhesive groove 2230 and the outer side surface of the lens barrel 2100. For example, the thickness of the support protrusion 430 may be less than the distance between the outer side surface of the lens barrel 2100 and the inner side surface of the second adhesive groove 2230.

[0087] In addition, the support protrusion 430 may be disposed such that a lower surface thereof may be spaced apart from a 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 side surface of the second adhesive groove 2230, the outer side surface of the support protrusion 430, and the outer side surface of the lens barrel 2100.

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

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

[0091] The 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] At the same time, the aperture module 2 can also be connected to the lens barrel 2100. For example, referring to Figure 7 , a lower surface of the base 400 of the aperture module 2 may be coupled to an upper surface of the lens barrel 2100. A portion where the aperture module 2 and the lens barrel 2100 are coupled to each other may be continuously formed in a circumferential direction of the lens barrel 2100.

[0094] In a structure in which the aperture module 2 moves 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] Reference Figure 3 , the lens module 2000 may be accommodated in the housing 1100 . As an example, the housing 1100 may have a shape in which the upper and lower parts are opened, the carrier 4000 may be disposed in the inner space of the housing 1100 , and the lens module 2000 may be accommodated in the carrier 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 shaking 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 focus driving unit 5000 that moves the lens module 2000 in an optical axis (Z axis) direction and a dither driving unit 6000 that moves the lens module 2000 in a direction perpendicular to the optical axis (Z axis) direction.

[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 further include an infrared filter.

[0101] The infrared filter may block light in an infrared region of 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 a 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 through wire bonding.

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

[0106] The housing 1300 may be coupled to the housing 1100 to surround an outer surface of the housing 1100 , and may play a role in protecting internal components of the camera actuator 3 .

[0107] The focus driving unit 5000 may move the lens module 2000 to focus on the object. For example, the focus driving unit 5000 may move the carrier 4000 by generating a driving force in the optical axis (Z axis) direction. Since the lens module 2000 is disposed in the carrier 4000, the carrier 4000 and the lens module 2000 may move together in the optical axis (Z axis) direction by the driving force of the focus driving 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 focus driving 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 may be mounted on the carrier 4000. As an example, the first magnet 5100 may be mounted on one side surface of the carrier 4000.

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

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

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

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

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

[0116] When power is applied to the first coil 5300 , the carrier 4000 may 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 4000, the lens module 2000 can also move in the optical axis (Z axis) direction by the movement of the carrier 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 may be disposed between the bearing portion 4000 and the housing 1100. For example, the first ball member B1 may be disposed between the bearing portion 4000 and the housing 1100, and may reduce friction when the bearing portion 4000 moves.

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

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

[0121] The first magnet 5100 and the first yoke 5700 may generate an attraction force between each other. For example, the first yoke 5700 may be a magnetic material. The attraction 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 come into contact with each of the bearing portion 4000 and the housing 1100 by the attraction force of the first magnet 5100 and the first yoke 5700 .

[0123] The receiving groove may be provided on the surface where the carrying portion 4000 and the housing 1100 may face each other. For example, the carrying portion 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 optical axis (Z axis) direction. 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 an optical axis (Z-axis) direction.

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

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

[0129] Among the three balls included in the first ball group BG1, two balls disposed on the outermost sides in a direction parallel to the optical axis (Z axis) may have the same diameter, and a ball disposed therebetween may have a smaller diameter than that of the balls disposed on the outermost sides.

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

[0131] Meanwhile, in an embodiment, the auxiliary yoke 5710 may be disposed in a position facing the first magnet 5100. For example, the auxiliary yoke 5710 may be disposed on the substrate 7000 to face the first magnet 5100. In addition, the auxiliary yoke 5710 may be disposed on the inner side of the first coil 5300.

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

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

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

[0135] To this end, a first position sensor 5500 may be provided. The first position sensor 5500 may be provided on the substrate 7000 to face the first magnet 5100. The first position sensor 5500 may be a Hall sensor.

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

[0137] The guide frame 3000 and the lens module 2000 may be sequentially received in the carrier 4000. For example, the guide frame 3000 may be disposed between the carrier 4000 and the lens module 2000. The guide frame 3000 may be in a quadrangular plate shape having a hollow portion therein.

[0138] The guide frame 3000 and the lens module 2000 may move together in one direction perpendicular to the optical axis (Z axis) by the driving force of the shake driving unit 6000, and the lens module 2000 may move relative to the guide frame 3000 in another direction perpendicular to the optical axis (Z axis).

[0139] For example, the guide frame 3000 and the lens module 2000 may move together in a first axis (X axis) direction perpendicular to the optical axis (Z axis). The lens module 2000 may move relative to the guide frame 3000 in a second axis (Y axis) direction 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 may also move together with the lens module 2000 in the first axis (X axis) direction and the second axis (Y axis) direction.

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

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

[0143] The second magnet 6110 may be provided on the lens module 2000. For example, the second magnet 6110 may be installed on one side surface of the lens holder 2200.

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

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

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

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

[0148] One of the two coils of the second coil 6130 may be disposed 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 disposed to face the S pole of one surface of the second magnet 6110 .

[0149] Due to the polarity arrangement of the second magnet 6110, magnetic field leakage can be prevented, and therefore, sufficient driving force can be generated even under low power conditions.

[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 first axis (X axis) direction by an 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 a direction facing each other (eg, a first axis (X-axis) direction).

[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 disposed to face each other in the second axis (Y axis) direction.

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

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

[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 disposed to face the third magnet 6310. For example, the third coil 6330 may be disposed to face the third magnet 6310 in the second axis (Y axis) direction.

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

[0159] One of the two coils of the third coil 6330 may be disposed 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 disposed 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 therefore, sufficient driving force can be generated even under low power conditions.

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

[0162] The substrate 7000 may be mounted on a 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 an opening 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 second axis (Y axis) direction by an 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 a direction facing each other (eg, a second axis (Y-axis) direction).

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

[0167] The camera actuator 3 according to the embodiment may include a plurality of ball members supporting 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 bearing 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 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 movement of the lens module 2000 in the second axis (Y axis) direction.

[0170] As an example, when the driving force occurs in the first axis (X axis) direction, the second ball member B2 may roll in the first axis (X axis) direction. Therefore, 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 the driving force occurs in the second axis (Y axis) direction, the third ball member B3 may roll in the second axis (Y axis) direction. Therefore, 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 bearing 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] The third receiving groove 4100 receiving the second ball member B2 may be formed on at least one surface of the bearing 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 bearing portion 4000 and the guide frame 3000 .

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

[0177] To this end, a 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] The fourth receiving groove 3100 for receiving the third ball member B3 may be formed on at least one surface of the guide frame 3000 and the lens module 2000 (e.g., the lens holder 2200) facing 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 accommodated in the fourth accommodation groove 3100, its movement in the optical axis (Z axis) direction and the first axis (X axis) direction can be restricted, and it can only move in the second axis (Y axis) direction. As an example, the third ball member B3 can only roll in the second axis (Y axis) direction.

[0181] To this end, a 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 the driving force occurs in the first axis (X axis), the guide frame 3000 and the lens module 2000 may move together in the first axis (X axis). In addition, the aperture module 2 may also move together with the lens module 2000 in the first axis (X axis).

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

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

[0185] Here, the third ball member B3 can roll in the second axis (Y axis) direction. In this case, the movement of the second ball member B2 can 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 may be provided. The second position sensor 6150 may be provided on the substrate 7000 to face the second magnet 6110, and the third position sensor 6350 may be provided on the substrate 7000 to face the third magnet 6310. The second position sensor 6150 and the third position sensor 6350 may be Hall sensors.

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

[0189] Whether the lens module 2000 rotates may 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 may be offset by controlling the third coil 6330.

[0190] The rotation of the lens module 2000 can be prevented by the configuration of the third accommodating groove 4100 in which the second ball member B2 is disposed and the fourth accommodating groove 3100 in which the third ball member B3 is disposed, but the lens module 2000 may rotate slightly due to the influence of tolerances occurring during the manufacturing process of the equipment.

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

[0192] Meanwhile, in an embodiment, the second yoke 4310 and the third yoke 4330 may be configured such that the bearing portion 4000 and the guide frame 3000 may maintain contact with the second ball member B2, and the guide frame 3000 and the lens module 2000 may maintain contact with the third ball member B3.

[0193] The second yoke 4310 and the third yoke 4330 may be fixed to the carrier 4000 , and may be disposed 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 direction toward the second yoke 4310 and the third yoke 4330 by the attraction between the second yoke 4310 and the second magnet 6110 and the attraction between the third yoke 4330 and the third magnet 6310, so that the guide frame 3000 and the lens module 2000 can maintain a contact state with the third ball member B3.

[0196] The second yoke 4310 and the third yoke 4330 may be a material that may 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 may be a magnetic material.

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

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

[0199] A buffer member having elastic force may be coupled to an edge portion of the first stopper 2300 .

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

[0201] The second stopper 2400 may prevent the bearing portion 4000 from being separated from the first ball member B1 due to an external impact.

[0202] Figure 8 is a plan view showing a connection substrate of a camera actuator. Fig. 9 is a perspective view showing a state in which a connection substrate and a housing are coupled to each other. Fig.10 Observed from below Fig. 9 A three-dimensional diagram of the connection substrate and the housing.

[0203] Fig.11 It is along Fig. 9 A cross-sectional view of the connection substrate and the housing taken along line II'. Fig.12 is a perspective view showing a state in which a connection substrate and a housing are coupled to each other. Fig.13 Observed from below Fig.12 A three-dimensional diagram of the connection substrate and the housing.

[0204] Reference 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 Fig.19 ) is connected to a 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 moving portion 8300, and a supporting portion 8500. The connection substrate 8000 may be a rigid flexible printed circuit board (RFPCB).

[0207] The moving portion 8300 may be disposed on an inner side of the fixed portion 8100 , and the supporting portion 8500 may be disposed between the fixed portion 8100 and the moving portion 8300 .

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

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

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

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

[0212] A connection pad may be provided on one side of the moving portion 8300 , and the aperture substrate 540 may be coupled to the connection pad of the moving portion 8300 .

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

[0214] In another embodiment, the connection pad may be provided on one of the moving portion 8300 and the first extending portion 541, and the connector may be provided on the other. The connection pad and the connector may be connected to each other.

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

[0216] The support portion 8500 may be a flexible PCB. When the moving portion 8300 moves, the support portion 8500 disposed between the moving portion 8300 and the fixed portion 8100 may be bent.

[0217] The supporting portion 8500 may extend along a circumference of at least a portion of the moving portion 8300. The supporting portion 8500 may have a single bridge shape or a plurality of bridge shapes.

[0218] The support portion 8500 may have a bent shape bent at least once.

[0219] Since the support portion 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] Meanwhile, since the aperture module 2 can move together with the lens module 2000, the magnet part 510 and the coil part 520 (see Fig.19 ) 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 may be maintained, so that the driving stability of the aperture module 2 may be improved.

[0222] The fixing portion 8100 may be coupled to the housing 1300. For example, the fixing portion 8100 may be mounted on an upper inner surface of the housing 1300.

[0223] The housing 1300 may include a step portion 1310. The step portion 1310 may be provided in a position covering at least a portion of the support portion 8500 of the connection substrate 8000 in the optical axis (Z-axis) direction.

[0224] The step portion 1310 may extend from the upper surface of the housing 1300 in the optical axis (Z axis) direction (up and down direction), and may have a shape bent and extended toward the optical axis (Z axis).

[0225] The step portion 1310 (eg, a surface that bends and extends toward the optical axis (Z axis)) and the support portion 8500 of the connection substrate 8000 may face each other in the optical axis (Z axis) direction.

[0226] like Fig. 9 As shown in , the step portion 1310 may have a shape facing a portion of the support portion 8500 in the optical axis (Z axis) direction. Fig.12 As shown, the step portion 1310 may have a shape facing the entire support portion 8500 in the optical axis (Z-axis) direction.

[0227] When the aperture module 2 moves together with the lens module 2000, the support portion 8500 of the connection substrate 8000 may be bent. In this case, the step portion 1310 may limit the range of bending of the support portion 8500 of the connection substrate 8000. Therefore, the support portion 8500 of the connection substrate 8000 may be prevented from being excessively deformed.

[0228] The connection substrate 8000 may include a connection portion 8700 and a bent portion 8710. The connection portion 8700 may be connected to the fixed portion 8100 through the bent portion 8710 and may extend in the optical axis (Z axis) direction. 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 bent portion 8710 may be configured to connect the connection portion 8700 to the fixed portion 8100 , and at least a portion of the bent portion 8710 may have a curvature. The bent portion 8710 may be spaced apart from the housing 1300 .

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

[0231] Reference Fig.14 , the connection substrate 8000' may include a fixed portion 8100, a moving portion 8300, and a supporting portion 8500'. The connection substrate 8000' may be an RFPCB.

[0232] The moving portion 8300 may be disposed on an inner side of the fixed portion 8100 , and the supporting portion 8500 ′ may be disposed between the fixed portion 8100 and the moving portion 8300 .

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

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

[0235] The supporting portion 8500' may extend along the circumference of the inner side of the fixing portion 8100. The supporting portion 8500' may have a single bridge shape or a plurality of bridge shapes.

[0236] A portion of the support portion 8500 ′ may be connected to the moving portion 8300 , and another portion of the support portion 8500 ′ may be connected to the fixed portion 8100 .

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

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

[0239] The connection pads may be respectively provided in the third coupling portion 8310 and the fourth coupling portion 8320 .

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

[0241] A conceptual line connecting the first coupling portion 8110 to the second coupling portion 8120 and a conceptual line connecting the third coupling portion 8310 to the fourth coupling portion 8320 may be perpendicular to each other.

[0242] The support portion 8500 ′ may 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 ′ may be connected to the moving portion 8300 through the third coupling portion 8310 and the fourth coupling portion 8320 .

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

[0244] The supporting portion 8500 ′ may extend along the circumference of the inner side of the fixing portion 8100 , and may be connected to the first to fourth coupling portions 8110 to 8320 .

[0245] For example, the supporting portion 8500 ′ may have a shape connecting the first connecting portion 8110 to the third connecting portion 8310 , connecting the second connecting portion 8120 to the third connecting portion 8310 , connecting the first connecting portion 8110 to the fourth connecting portion 8320 , and connecting the second connecting portion 8120 to the fourth connecting portion 8320 .

[0246] In an embodiment, the first coupling portion 8110 and the second coupling portion 8120 may 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 may 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 supporting portion 8500 ′.

[0248] Reference Fig.15 , the supporting portion 8500 ″ of the connection substrate 8000 ″ may include a first supporting portion 8510 and a second supporting portion 8520 .

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

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

[0251] Reference Fig.16 , the first coupling portion 8110 of the connection substrate 8000 ″′ may be disposed adjacent to the fourth coupling portion 8320 . In addition, the second coupling portion 8120 may be disposed adjacent to the third coupling portion 8310 .

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

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

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

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

[0256] Fig.17 is a perspective view illustrating a state in which an aperture module according to an embodiment has a relatively small aperture. Fig.18 is a perspective view illustrating a state in which an aperture module according to an embodiment has a relatively large aperture.

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

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

[0259] The base 400 may be coupled to the camera actuator 3. For example, the base 400 may 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 may move together with the lens module 2000.

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

[0261] A plurality of blades 200 may form an aperture 210. A portion of each blade may be arranged to overlap with other blades in the optical axis (Z axis) direction. For example, a group of multiple blades (e.g., three blades) and another group of multiple blades (e.g., three blades) may be arranged sequentially in the optical axis (Z axis) direction. Here, a portion of one blade may 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 may be provided, three blades may form one group, and two groups of blades may be stacked in two layers, but the number of the plurality of blades 200 is not limited thereto.

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

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

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

[0266] The blade may include a through hole 220. For example, the blade may have the through hole 220 on the outer side end, and the through hole 220 may have a shape penetrating the blade in the optical axis (Z-axis) direction.

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

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

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

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

[0271] The size of the guide hole 230 may be greater than the size of the guide protrusion 310. For example, the width of the guide hole 230 may correspond to the diameter of the guide protrusion 310, and the length of the guide hole 230 may be greater than the diameter of the guide protrusion 310.

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

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

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

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

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

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

[0278] The second spacer 120 may have a through hole through which light passes, and the size of the through hole of the second spacer 120 may be larger than the maximum size of the aperture 210 formed by the plurality of blades 200. In addition, the size of the through hole of the second spacer 120 may be smaller than that 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 guide protrusion 310 of the rotating body 300 may move in the guide hole 230 of the plurality of blades 200, and thus, the plurality of blades 200 may rotate using the protrusion 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 portion 510 and a coil portion 520. The magnet portion 510 and the coil portion 520 may be disposed to face each other in an optical axis (Z-axis) direction.

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

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

[0284] The magnet portion 510 may include a plurality of aperture magnets spaced apart from each other. As an example, the magnet portion 510 may include a first aperture magnet 511 and a second aperture magnet 512 disposed 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 so that one surface (e.g., the surface facing the coil portion 520) may have both N and S poles. As an example, an N pole, a neutral region, and an S pole may be sequentially provided on one surface of the first aperture magnet 511 and the second aperture magnet 512 facing the coil portion 520 in a direction perpendicular to the optical axis (Z axis) (e.g., the rotation direction of the rotating body 300).

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

[0287] The coil part 520 may be disposed on the aperture substrate 540, and the aperture substrate 540 may be mounted on the base 400 so 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 disposed 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 extending portion 541 extending from an upper surface side of the base 400 to a side surface of the base 400. The first extending portion 541 may be connected to a connection substrate 8000, which will be described later.

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

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

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

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

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

[0294] When the magnet moves linearly and the linear motion of the magnet is changed into the rotational motion of the rotating body, the rotating body may be rotated by external force without applying power, and the size of the aperture may be changed, which may be problematic.

[0295] However, in this embodiment, the center of weight of the aperture driving unit 500 (eg, the magnet portion 510 ) may be disposed on the inside of 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 may be reduced when the rotating body 300 rotates.

[0297] The rolling portion 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 rotation direction of the rotating body 300. The rolling portion RB may include three or more rolling balls. In this embodiment, the rolling portion RB may include four rolling balls, but when three or more rolling balls are included, the number of the plurality of rolling balls is not limited.

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

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

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

[0301] The rolling portion RB may contact the base 400 and the rotating body 300 by attractive forces of the magnet portion 510 and the pulling yoke portion 550 , respectively.

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

[0303] Fig.21 It is a plan view showing a state in which the rolling part is provided on the base. Fig. 22 It is a perspective view showing a state where the pulling yoke portion and the auxiliary yoke are separated from the base. Fig.23 2 is a diagram showing the arrangement of a magnet portion, a pulling yoke portion, and an auxiliary yoke.

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

[0305] Reference Fig.21The rolling portion 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 a 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 disposed closer to the first aperture magnet 511 than the second aperture magnet 512. The second rolling member RB2 may be disposed closer to the second aperture magnet 512 than the first aperture magnet 511. The relative position of the third rolling member RB3 with respect to the magnet portion 510 is not limited.

[0310] The guide groove portion may be provided on surfaces where the base 400 and the rotating body 300 may 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 portion 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 a circumferential direction of the base 400 .

[0313] Each of the 1-1 guide grooves 421 to 1-4 guide grooves 424 may include a bottom surface formed on one surface (e.g., an upper surface) of the base 400 and a side surface extending from the bottom surface in the optical axis (Z axis) direction. For example, each of the 1-1 guide grooves 421 to 1-4 guide grooves 424 may have an "L"-shaped cross-section.

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

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

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

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

[0318] Furthermore, the 1-2 guide groove 422 and the 2-2 guide groove 322 may be disposed to face each other, and the other of the two rolling balls of the first rolling member RB1 (eg, the second rolling ball RB1 b ) may be disposed in a space between the 1-2 guide groove 422 and the 2-2 guide groove 322 .

[0319] The bottom surface of the 1-2 guide groove 422 and the bottom surface of the 2-2 guide groove 322 may face each other in the optical axis (Z axis) direction, and the side surface of the 1-2 guide groove 422 and the side surface of the 2-2 guide groove 322 may face each other in a direction perpendicular to the optical axis (Z axis).

[0320] The first rolling ball RB1 a of the first rolling member RB1 may make two-point contact with each of the 1-1 guide groove 421 and the 2-1 guide groove 321 .

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

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

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

[0324] The second rolling ball RB1 b of the first rolling member RB1 may make 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 may contact the 1-2 guide groove 422 at two points and may contact the 2-2 guide groove 322 at two points. As an example, the second rolling ball RB1b may contact the bottom surface and the side surface of the 1-2 guide groove 422 and may contact the bottom surface and the side surface of the 2-2 guide groove 322.

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

[0327] For example, a conceptual line connecting the contact point of the bottom surface of the 1-2 guide groove 422 to the contact point of the bottom surface of the 2-2 guide groove 322 and a conceptual line connecting the contact point of the side surface of the 1-2 guide groove 422 to the contact point of the side surface of the 2-2 guide groove 322 may 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 may serve as a main guide for guiding the rotation of the rotating body 300 .

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

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

[0331] The second rolling member RB2 may 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 may 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 may contact the bottom surface of the 1-3 guide groove 423 and the bottom surface of 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 contact the bottom surface of the 1-3 guide groove 423 and the bottom surface of the 2-3 guide groove 323, and can contact the side surface of the 1-3 guide groove 423 and one of the side surfaces of the 2-3 guide groove 323.

[0334] The distance between surfaces facing each other in a direction perpendicular to the optical axis (Z axis) direction (eg, side surfaces of the 1-3 guide groove 423 and the 2-3 guide groove 323) may 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 may serve as auxiliary guides that support the rotation of the rotating body 300 .

[0336] When viewed in the optical axis (Z-axis) direction, the rotating body 300 may be in three-point contact with the base 400 through the first rolling member RB1 and the second rolling member RB2 (eg, a triangular supporting area).

[0337] The 1-4 guide groove 424 and the 2-4 guide groove 324 may be disposed to face each other, and the third rolling member RB3 may be disposed in a 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 may 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 may face each other in a direction perpendicular to the optical axis (Z axis).

[0339] The third rolling member RB3 may contact 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 may 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 may contact 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 contact one point of the bottom surface of the 1-4 guide groove 424 and the bottom surface of the 2-4 guide groove 324, and contact one point of the side surface of the 1-4 guide groove 424 and the side surface of 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 may 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, a distance between a bottom surface of the 1-4 guide groove 424 and a bottom surface of the 2-4 guide groove 324 in the optical axis (Z-axis) direction may be greater than a diameter of a rolling ball of the third rolling member RB3 .

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

[0345] The third rolling member RB3 may 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, the rolling portion RB may be prevented from being separated from the base 400 and the rotating body 300.

[0346] However, the third rolling member RB3 may be an optional component, and when the third rolling member RB3 is not provided, the rotating body 300 may be prevented from tilting 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 may 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 make the rotating body 300 rotate stably, the center point CP of the attraction acting between the magnet part 510 and the traction yoke part 550 may need to be set in the supporting 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] Furthermore, since the width of the bearing 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 reason, by differently configuring the sizes of the first and second traction yokes 551 and 552 , the center point CP of the attraction force may be disposed closer to the first rolling member RB1 .

[0351] In an embodiment, an area of ​​the first pulling yoke 551 facing the first aperture magnet 511 may be greater than an area of ​​the second pulling 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 attraction force can be disposed 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 disposed 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 attraction can be set to be closer to the first rolling member RB1.

[0355] The area of ​​a portion of the first pulling yoke 551 may be configured to be larger than the area of ​​another portion. For example, the first pulling yoke 551 may have a rectangular shape and a protrusion protruding from a 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 pulling yoke 551 may remain constant.

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

[0357] As another example, the width of the first pulling yoke 551 may be configured to increase from an end portion on one side in the length direction to an end portion on the other side in the length direction.

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

[0359] At the same time, refer to Fig. 22 According to the embodiment, the aperture module 2 may further include an auxiliary yoke 560 .

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

[0361] The first aperture magnet 511 , the first pulling yoke 551 , and the auxiliary yoke 560 may be disposed in a space between the first rolling ball RB1 a and the second rolling ball RB1 b when viewed in the optical axis (Z-axis) direction.

[0362] The auxiliary yoke 560 may be disposed on an inner side surface extending in the optical axis (Z axis) direction among the surfaces of the base 400. For example, the auxiliary yoke 560 may be disposed so that at least a portion thereof may face the first aperture magnet 511 in a direction perpendicular to the optical axis (Z axis). The auxiliary yoke 560 may be a magnetic material.

[0363] The auxiliary yoke 560 may be integrally coupled to the base 400 by insert injection. In this case, the auxiliary yoke 560 may be manufactured to be integrated into the base 400 by injecting a resin material into the 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 may be disposed 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, attractive forces may act on the first aperture magnet 511 in at least two directions that intersect with each other.

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

[0368] Therefore, due to the attractive force acting between the first aperture magnet 511 and the first pulling yoke 551 , the first rolling ball RB1 a may come into contact with the bottom surface of the 1-1 guide groove 421 and the bottom surface of the 2-1 guide groove 321 .

[0369] Due to the attractive force acting between the first aperture magnet 511 and the first pulling yoke 551 , the second rolling ball RB1 b may come into contact with the bottom surface of the 1-2 guide groove 422 and the bottom surface of 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 may 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 RB1 a may come into contact with the side surface of the 1-1 guide groove 421 and the side surface of 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 RB1 b may come into contact with the side surface of the 1-2 guide groove 422 and the side surface of the 2-2 guide groove 322 .

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

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

[0375] A conceptual circle passing through the side surface of the 1-1 guide groove 421 and the side surface of the 1-2 guide groove 422 may be concentric with a conceptual circle passing through the side surface of the 2-1 guide groove 321 and the side surface of the 2-2 guide groove 322 .

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

[0377] When 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 maintain contact with the bottom surface of the 1-3 guide groove 423 and the bottom surface of 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 aforementioned embodiments, the camera module can improve driving reliability.

[0384] Although 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 understood in a descriptive sense only and not for limiting purposes. The description of the features or aspects in each example should be considered to be applicable to similar features or aspects in other examples. If the described techniques are performed in a different order, and / or if the components in the described system, architecture, device or circuit are replaced or supplemented in a different manner and / or by other components or their equivalents, appropriate results can still be achieved. Therefore, the scope of the present disclosure is not limited by 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. Camera module, including: case; 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 comprising a lens barrel and a lens holder coupled together, wherein the lens holder has a through hole at the center to accommodate the lens barrel; and an aperture module coupled to the lens module and configured to move together with the lens module, wherein the lens holder comprises a first adhesive groove and a second adhesive groove, the first adhesive groove is coupled to the lens barrel, a portion of the aperture module is accommodated 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, wherein: The aperture module is coupled 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: A lower surface of the aperture module is bonded to an upper surface of the lens barrel by the adhesive.

5. The camera module according to claim 4, wherein: The aperture module includes a supporting protrusion received in the second adhesive groove, and wherein the support protrusion is spaced apart from a bottom surface of the second adhesive groove in an 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 supporting protrusion received in the second adhesive groove, and wherein the supporting protrusion is spaced apart from an inner side surface of the second adhesive groove and an outer side surface of the lens barrel while being received in the second adhesive groove.

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

8. The camera module according to claim 6, wherein: 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 is in contact with the inner side surface of the second adhesive groove, the outer side surface of the support protrusion, and the outer side surface of the lens barrel.

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

11. The camera module according to claim 1, wherein: 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, wherein: A portion of an outer side surface of the lens barrel is opposed to 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, further comprising: A connection substrate is configured to supply power to the aperture module and includes a moving portion coupled to the aperture module, a fixed portion fixed to the housing, and a supporting portion connecting the moving portion to the fixed portion.

14. The camera module according to claim 13, further comprising: a printed circuit board coupled to the housing and having an image sensor disposed thereon, Wherein, the connection substrate further includes a connection portion for connecting the fixing portion to the printed circuit board.

15. The camera module according to claim 1, wherein: The aperture module comprises: Pedestal; a rotating body configured to rotate relative to the base; a plurality of blades configured to move with the rotation of the rotating body to form an aperture; A magnet portion, disposed on one of the base and the rotating body; a coil portion disposed to face the magnet portion; and An aperture substrate, wherein the coil portion is arranged on the aperture substrate.

16. The camera module according to claim 15, further comprising: a printed circuit board coupled to the housing and having an image sensor disposed thereon; as well as A connection substrate having one side connected to the aperture substrate and another side 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 an 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