Aperture module and camera module

Abstract

An aperture module and a camera module are provided. The aperture module includes: a base; a rotor configured to rotate relative to the base; a plurality of blades configured to form incident holes having different sizes based on rotation of the rotor; a plurality of ball members disposed between the base and the rotor; a magnet portion disposed on one of the rotor and the base; and a coil portion provided on the other of the rotor and the base, in which an attractive force acts between the base and the rotor in a diagonal direction between a first axial direction parallel to the optical axis and a second axial direction perpendicular to the first axial direction.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority from Korean Patent Application No. 10-2023-0176736 filed on December 7, 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 following description relates to an aperture module and a camera module including the aperture module. Background Art

[0004] Camera modules are implemented for portable electronic devices such as, but not limited to, smartphones, tablet personal computers (PCs), and laptop computers.

[0005] Recently, an aperture module that controls the amount of light incident therein has been applied to mobile camera modules.

[0006] A conventional aperture module may have a plurality of blades forming an entrance aperture, and the size of the entrance aperture may be adjusted by adjusting positions of the plurality of blades using a driver.

[0007] However, in a conventional aperture module, a space for arranging blades may be limited due to a configuration structure of a driver that drives the aperture module. Utility Model Content

[0008] This summary is provided to introduce a selection of concepts in a simplified form that are further described in the following detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

[0009] In general terms, an aperture module includes: a base; a rotor configured to rotate relative to the base; a plurality of blades configured to form incident apertures having different sizes based on the rotation of the rotor; a plurality of ball members disposed between the base and the rotor; a magnet portion disposed on one of the rotor and the base; and a coil portion disposed on the other of the rotor and the base, wherein an attractive force acts between the base and the rotor in a diagonal direction between a first axial direction parallel to the optical axis and a second axial direction perpendicular to the first axial direction.

[0010] The first magnetic yoke can be set on the base; and the second magnetic yoke can be set opposite to the first magnetic yoke relative to the optical axis, wherein the magnet part includes a first aperture magnet and a second aperture magnet arranged on opposite sides of the optical axis, and wherein an attractive force acts between the first aperture magnet and the first magnetic yoke in the first axis direction and the second axis direction.

[0011] An attractive force may act between the second aperture magnet and the second yoke in the first axial direction.

[0012] The first magnetic yoke can be set on the base; and the second magnetic yoke can be set opposite to the first magnetic yoke relative to the optical axis, wherein the magnet part can include a first aperture magnet and a second aperture magnet set on opposite sides of the optical axis, and wherein the attraction acting between the first aperture magnet and the first magnetic yoke can be greater than the attraction acting between the second aperture magnet and the second magnetic yoke.

[0013] The base may include a yoke on which a magnetic attraction acting together with the magnet portion acts, wherein the yoke may include a first yoke and a second yoke arranged on opposite sides of the optical axis, and a cross-section of the first yoke may have an "L" shape.

[0014] The area of ​​the first yoke may be larger than the area of ​​the second yoke.

[0015] The magnet portion and the coil portion may be disposed so as to overlap with each other in the second axis direction.

[0016] The aperture module may further include a first magnetic yoke disposed on the base, wherein the magnet portion may include a first aperture magnet and a second aperture magnet disposed on opposite sides of the optical axis, wherein the coil portion may include a first aperture coil and a second aperture coil disposed on opposite sides of the optical axis, and wherein the first magnetic yoke, the first aperture magnet, and the first aperture coil may overlap with each other in the second axis direction.

[0017] The first portion of the plurality of ball members may support the rotor in the first axial direction and the second axial direction, and wherein the second portion of the plurality of ball members may support the rotor in the first axial direction.

[0018] The magnet portion may include a first aperture magnet and a second aperture magnet arranged on opposite sides of the optical axis, wherein the plurality of ball members may include a first rolling ball and a second rolling ball, wherein the first rolling ball and the second rolling ball are spaced apart from each other in a circumferential direction of the rotor or the base, and the first aperture magnet is located between the first rolling ball and the second rolling ball, and wherein the first rolling ball and the second rolling ball can support the rotor in the first axis direction and the second axis direction.

[0019] In general aspects, an aperture module includes a base, a rotor disposed to rotate with respect to the base, a plurality of vanes configured to form an incident aperture having different sizes based on rotation of the rotor, a plurality of ball members disposed between the base and the rotor, a magnet portion disposed on the rotor, a coil portion disposed on the base, and a first yoke disposed on the base, wherein the magnet portion includes a first aperture magnet and a second aperture magnet disposed on opposite sides of an optical axis, and wherein the first yoke overlaps the first aperture magnet in a direction of the optical axis and a direction perpendicular to the optical axis.

[0020] The aperture module can further include a second yoke disposed on an opposite side of the first yoke with respect to the optical axis, wherein an attractive force can act between the second aperture magnet and the second yoke in the direction of the optical axis.

[0021] The coil portion can include a first aperture coil facing the first aperture magnet, and wherein the first aperture coil and the first aperture magnet can be disposed to face each other in the direction perpendicular to the optical axis.

[0022] The first yoke can include a horizontal portion perpendicular to the direction of the optical axis, and a size of the second yoke can be smaller than a size of the horizontal portion of the first yoke.

[0023] A first portion of the plurality of ball members can support the rotor in the direction of the optical axis and the direction perpendicular to the optical axis, and a second portion of the plurality of ball members can support the rotor in the direction of the optical axis.

[0024] A portion of the plurality of ball members can include a first rolling ball and a second rolling ball spaced apart from each other in a circumferential direction of the rotor or the base, and the first aperture magnet is between the first rolling ball and the second rolling ball, and the first rolling ball and the second rolling ball can support the rotor in the direction perpendicular to the optical axis.

[0025] In general aspects, a camera module includes a lens module and an aperture module, the aperture module including a base, a rotor configured to rotate with respect to the base, a plurality of vanes configured to form an incident aperture having different sizes based on rotation of the rotor, a plurality of ball members disposed between the base and the rotor, a magnet portion disposed on one of the rotor and the base, and a coil portion disposed on the other of the rotor and the base, wherein an attractive force acts between the base and the rotor in a diagonal direction between a first axis direction parallel to an optical axis and a second axis direction perpendicular to the first axis direction.

[0026] Other features and aspects will be apparent from the following specific description, the drawings and the claims. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1is a perspective view showing an exemplary camera module coupled with an aperture module according to one or more embodiments.

[0028] Figure 2 is an exploded perspective view showing an exemplary camera module decoupled from an aperture module according to one or more embodiments.

[0029] Figure 3 is a perspective view showing a state in which the aperture module has a relatively narrow entrance aperture according to one or more embodiments.

[0030] Figure 4 is a perspective view showing a state in which the aperture module has a relatively wide entrance aperture according to one or more embodiments.

[0031] Figure 5 is an exploded perspective view showing an aperture module according to one or more embodiments.

[0032] Figure 6 is a diagram showing a configuration structure of a driver and a yoke of an aperture module according to one or more embodiments.

[0033] Figure 7 is a diagram showing an acting relationship of arrangement and attraction between a magnet portion and a yoke of an aperture module according to one or more embodiments.

[0034] Figure 8 is a plan view showing a portion of an aperture module according to one or more embodiments.

[0035] Figure 9 is an exploded perspective view showing a portion of an aperture module according to one or more embodiments.

[0036] Figure 10 is a cross-sectional view taken along line I-I' in Figure 8

[0037] Figure 11 is a cross-sectional view taken along line II-II' in Figure 8

[0038] Figure 12 is a cross-sectional view taken along line II-II' in Figure 8

[0039] Figure 13 is an exploded perspective view showing a camera actuator according to one or more embodiments.

[0040] Figure 14 is a plan view showing a connection plate of a camera actuator according to one or more embodiments. DETAILED DESCRIPTION​​​

[0041] Throughout the drawings and specific embodiments, identical reference numerals designate identical elements, unless otherwise described. The drawings can not be to scale and the dimensions, proportions, and shapes of the elements in the drawings can be exaggerated for clarity, illustration and convenience.

[0042] The following DETAILED DESCRIPTION is presented to help the reader understand the methods, apparatuses and / or systems described herein. However, the following DETAILED DESCRIPTION is not exhaustive of the methods, apparatuses and / or systems described herein. Rather, the following DETAILED DESCRIPTION serves merely as an example and is not limiting as to the scope, applicability, or configuration of the methods, apparatuses and / or systems described herein. Changes can be made in the DETAILED DESCRIPTION based on the teachings of the present disclosure, as well as changes can be made in the methods, apparatuses and / or systems described herein. For instance, the order of the operations described herein and / or within operations can be changed, except that the order of operations and / or within operations that must occur in a certain order, and / or at least portions of the order of operations and / or within operations that must occur in a certain order, can not be changed. As another example, the order of operations and / or within operations can be performed in parallel, except that at least portions of the order of operations and / or within operations that must occur in a certain order, and / or at least portions of the order of operations and / or within operations that must occur in a certain order (e.g., a particular order), can not be changed. Furthermore, descriptions of features known to exist throughout the art of the present disclosure can be omitted so as to not obscure the description of the aspects specifically addressed herein.

[0043] Although terms such as “first,” “second,” and “third” or A, B, (a), (b), etc. can be used herein to describe various elements, components, regions, layers or sections, these elements, components, regions, layers or sections are not limited by these terms. Each of these terms is not used to define, for example, the nature, order or sequence of the corresponding elements, components, regions, layers or sections, but is used merely to distinguish the corresponding elements, components, regions, layers or sections from other elements, components, regions, layers or sections. Thus, a first element, component, region, layer or section referred to in the examples described herein can also be called a second element, component, region, layer or section without departing from the teachings of the examples.

[0044] Throughout this specification, when a component, element, or layer is described as being “on,” “connected to,” “coupled to,” or “engaged to” another component, element, or layer, it may be directly “on” (e.g., in contact with), directly “connected to,” directly “coupled to,” or directly “engaged to” the other component, element, or layer, or one or more other components, elements, or layers may reasonably be present between them. When a component, element, or layer is described as being “directly on,” “directly connected to,” “directly coupled to,” or “directly engaged to” another component, element, or layer, there are no other components, elements, or layers between them. Similarly, expressions such as “between” and “immediately between,” as well as “adjacent to” and “immediately adjacent to,” may also be interpreted as described above.

[0045] The terms used herein are only used to describe various examples and are not used to limit the present disclosure. The words "one", "a kind of" and "the" are intended to also include plural forms, unless the context clearly indicates otherwise. As non-limiting examples, the terms "include", "comprise" and "have" specify the existence of the stated features, quantities, operations, components, elements and / or their combinations, but do not exclude the existence or addition of one or more other features, quantities, operations, components, elements and / or their combinations, nor exclude the existence of alternatives that replace the features, quantities, operations, components, elements and / or their combinations. In addition, although an embodiment can set forth the existence of such terms "include", "comprise" and "have" specifying the stated features, quantities, operations, components, elements and / or their combinations, there can be other embodiments in which one or more of the stated features, quantities, operations, components, elements and / or their combinations are not present.

[0046] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more of the associated listed items. The phrases "at least one of A, B, and C," etc. are intended to have separate meanings, and these phrases "at least one of A, B, and C," etc. also include examples in which one or more of A, B, and C can be present (e.g., any combination of one or more of A, B, and C), unless the corresponding description and implementation require that such a list (e.g., "at least one of A, B, and C") be interpreted as having a combined meaning.

[0047] The features described herein can be implemented in different forms and are not to be construed as limited to the examples described herein. Rather, the examples described herein have been provided as an exemplification of the many possible forms that the methods, apparatuses, and / or systems described herein can take. In this regard, the examples described herein are non-limiting and should not be construed as limiting the disclosure in any way. The terminology used herein is for the purpose of describing particular examples only and is not intended to be limiting. The use herein of terms such as “may” or “can” with respect to what an example or embodiment can include or implement means that at least one example or embodiment includes or implements that feature, and that not all examples and embodiments are limited to that feature. The use herein of the term “example” or “embodiment” has the same meaning (e.g., the phrase “in one example” has the same meaning as “in one embodiment,” and “in one or more examples” has the same meaning as “in one or more embodiments”).

[0048] One or more examples relate to an aperture module and a camera module including the aperture module, and the camera module can be mounted on a portable electronic device such as, but not limited to, a mobile communication terminal, a smart phone, and a tablet PC.

[0049] One or more examples can provide an aperture module that can secure a wider installation space for a leaf.

[0050] Figure 1 FIG. 1 is a perspective view showing an exemplary camera module coupled with an aperture module according to an embodiment. Figure 2 FIG. 2 is an exploded perspective view showing a camera module separated from an aperture module according to an embodiment.

[0051] Referring to Figure 1 and Figure 2 , a camera module 1 according to one or more embodiments can include an aperture module 2 and a camera actuator 3.

[0052] The camera actuator 3 can include a lens module 200. The lens module 200 can move in the direction of an optical axis (Z-axis) to perform focus adjustment. In addition, the lens module 200 can move in a direction perpendicular to the optical axis (Z-axis) to perform optical image stabilization.

[0053] The aperture module 2 can be coupled to the camera actuator 3 and can control the amount of light incident to the camera actuator 3. In an example, the aperture module 2 can have an incident hole 21 (see Figure 3 ) through which light passes, and can adjust the amount of light incident to the camera actuator 3 by changing the size of the incident hole 21.

[0054] The aperture module 2 can be coupled to the lens module 200 and can be configured to move together with the lens module 200.

[0055] Figure 3is a perspective view illustrating an example in which the aperture module has a relatively narrow incident hole according to one or more embodiments. Figure 4 is a perspective view illustrating an example in which the aperture module has a relatively wide incident hole according to one or more embodiments. Figure 5 is an exploded perspective view illustrating the aperture module according to one or more embodiments. Figure 6 A configuration structure of a driver and a yoke of the aperture module according to one or more embodiments is illustrated. Figure 7 An acting relationship of arrangement and attraction between a magnet portion and a yoke of the aperture module according to one or more embodiments is illustrated. Figure 8 is a plan view illustrating a portion of the aperture module according to one or more embodiments.

[0056] Referring to Figures 3 to 5 , according to one or more embodiments, the aperture module 2 can include a base 40, a rotor 30, a plurality of vanes 20, and an aperture driver 50.

[0057] The base 40 can be coupled to the camera actuator 3. In an example, the base 40 can be coupled to the lens module 200 of the camera actuator 3. In this example, when the lens module 200 moves, the aperture module 2 can move together with the lens module 200.

[0058] The rotor 30 can rotate with respect to the base 40. In an example, the rotor 30 can be spaced apart from the base 40 in the optical axis (Z-axis) direction and can rotate with respect to the base 40. As the rotor 30 rotates, the size of the incident hole 21 of the aperture module 2 can change.

[0059] The plurality of vanes 20 can form the incident hole 21. Each vane can be disposed such that a portion thereof can overlap with other vanes in the optical axis (Z-axis) direction. In an example, one group of a plurality of vanes (e.g., three vanes) and another group of a plurality of vanes (e.g., three vanes) can be disposed in sequence in the optical axis (Z-axis) direction. In an example, a portion of one vane can be disposed to overlap with the other two vanes in the optical axis (Z-axis) direction.

[0060] In this embodiment, a total of six vanes can be provided, three vanes can form one group, and two groups of vanes can be stacked in two layers. However, the number of the plurality of vanes 20 is not limited thereto.

[0061] The incident hole 21 can be defined by the surface of each vane oriented in the optical axis (Z-axis) direction. The position of each vane can change based on the operation of the aperture driver 50. Accordingly, the size of the incident hole 21 can change according to the position of each vane.

[0062] In an example, as Figure 3 andFigure 4 As shown in the middle, the size of the entrance hole 21 can be reduced or increased based on the rotation of each vane.

[0063] The plurality of vanes 20 can be coupled to the base 40 and the rotor 30.

[0064] Each vane can include a through hole 22. For example, each vane can have a through hole 22 on the outer side end, and the through hole 22 can penetrate the vane in the optical axis (Z-axis) direction.

[0065] The through hole 22 of each vane can be coupled to the base 40. For example, a plurality of protrusions 41 protruding in the optical axis (Z-axis) direction can be provided on the base 40, and each protrusion 41 can be coupled to the through hole 22 of each corresponding vane. Each protrusion 41 can form a rotation axis of each vane. The protrusion 41 and the through hole 22 can have respective sizes.

[0066] In addition, each vane can include a guide hole 23. For example, each vane can have a guide hole 23 provided at a position spaced apart from the through hole 22.

[0067] The guide hole 23 of each vane can be coupled to the rotor 30. For example, a plurality of guide protrusions 31 protruding in the optical axis (Z-axis) direction can be provided on the rotor 30, and each guide protrusion 31 can be coupled to the guide hole 23 of each vane. The size of the guide hole 23 can be greater than the size of the guide protrusion 31. For example, the width of the guide hole 23 can correspond to the diameter of the guide protrusion 31, and the length of the guide hole 23 can be greater than the diameter of the guide protrusion 31.

[0068] The shape of the guide hole 23 is not limited thereto. For example, when the guide hole 23 is capable of moving the position of the vane in cooperation with the movement of the rotor 30, the shape of the guide hole 23 can change.

[0069] Accordingly, as the rotor 30 rotates, each guide protrusion 31 can move within each guide hole 23, and thus, each vane can rotate using the protrusion 41 of the base 40 as a rotation axis.

[0070] The aperture module 2 according to one or more embodiments can further include a cover 10. The cover 10 can be coupled to the base 40. The plurality of vanes 20 and the rotor 30 can be disposed in a space between the cover 10 and the base 40.

[0071] A first spacer 11 can be disposed between the plurality of vanes 20 and the cover 10. For example, the first spacer 11 can be coupled to the rotor 30 and can be disposed between the plurality of vanes 20 and the cover 10. The first spacer 11 can cover at least a portion of the upper surface of the plurality of vanes 20. In an example, the surface of the first spacer 11 can be painted black.

[0072] The first spacer 11 can have a through-hole 110 through which light passes, and the size of the through-hole 110 of the first spacer 11 can be greater than the maximum size of the incident hole 21 formed by the plurality of vanes 20.

[0073] The second spacer 12 can be disposed between the rotor 30 and the plurality of vanes 20. For example, the second spacer 12 can be coupled to the rotor 30 and can be disposed between the rotor 30 and the plurality of vanes 20. The second spacer 12 can cover at least a portion of the lower surface of the plurality of vanes 20. In an example, the surface of the second spacer 12 can be painted black.

[0074] The second spacer 12 can have a through-hole 120 through which light passes, and the size of the through-hole 120 of the second spacer 12 can be greater than the maximum size of the incident hole 21 formed by the plurality of vanes 20. In an example, the size of the through-hole 120 of the second spacer 12 can be smaller than the size of the through-hole 110 of the first spacer 11.

[0075] The aperture driver 50 can move the rotor 30 to change the size of the incident hole 21. For example, the aperture driver 50 can generate a driving force to rotate the rotor 30.

[0076] As the rotor 30 rotates, the guide protrusion 31 of the rotor 30 can move within the guide hole 23 of the plurality of vanes 20, and thus, the plurality of vanes 20 can rotate using the protrusion 41 of the base 40 as a rotation axis, and thus, the size of the incident hole 21 can be changed.

[0077] The aperture driver 50 can include a magnet portion 510 and a coil portion 520. The magnet portion 510 and the coil portion 520 can be disposed to face each other in a direction perpendicular to the optical axis (Z-axis).

[0078] The magnet portion 510 can be disposed on one of the rotor 30 and the base 40, and the coil portion 520 can be disposed on the other of the rotor 30 and the base 40.

[0079] In an example, the magnet portion 510 can be mounted on the rotor 30. As an example, the magnet portion 510 can be mounted on the side surface of the rotor 30.

[0080] The magnet portion 510 can include a plurality of aperture magnets spaced apart from each other. As an example, the magnet portion 510 can include a first aperture magnet 511 and a second aperture magnet 512 disposed on opposite sides of the optical axis (Z-axis).

[0081] 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 an N pole and an S pole. For example, one surface of the first aperture magnet 511 and the second aperture magnet 512 facing the coil portion 520 may have an N pole, a neutral region, and an S pole in that order in a direction perpendicular to the optical axis (Z axis).

[0082] 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 a direction perpendicular to the optical axis (Z axis).

[0083] The coil portion 520 may be disposed on an aperture substrate 530. The aperture substrate 530 may be disposed on the base 40. As an example, the aperture substrate 530 may be mounted on the upper surface of the base 40. The coil portion 520 may receive current through the aperture substrate 530. The coil portion 520 may include a plurality of aperture coils. As an example, the coil portion 520 may include a first aperture coil 521 and a second aperture coil 522 disposed on opposite sides of the optical axis (Z axis).

[0084] The magnet portion 510 may be configured as a moving member mounted on the rotor 30 and rotated together with the rotor 30 , and the coil portion 520 may be configured as a fixed member fixed to the base 40 .

[0085] In another embodiment, the positions of the magnet portion 510 and the coil portion 520 may be interchanged. In this example, since the coil portion 520 and the aperture substrate 530 are mounted on the rotor 30 and rotate together with the rotor 30, at least a portion of the aperture substrate 530 may be configured to be flexible.

[0086] When power is supplied to the coil part 520 , the rotor 30 may rotate based on electromagnetic force between the magnet part 510 and the coil part 520 .

[0087] You can refer to Figures 6 to 7 To describe the yoke.

[0088] Figure 6 The configuration structure of the driver and the yoke of the aperture module according to one or more embodiments is shown. Figure 7 The arrangement and the functional relationship of the attractive force between the magnet portion and the yoke of the aperture module according to one or more embodiments are shown.

[0089] The yoke 550 may be provided in the base 40. The yoke 550 may be a pulling yoke. The yoke 550 may be formed of metal or magnetic material. Therefore, a magnetic attraction (or attractive force) may act between the yoke 550 and the magnet portion 510.

[0090] The magnetic yoke 550 can be combined with the base 40. The magnetic yoke 550 can be coupled to a surface of the base 40. In this example, a groove or a space in which the magnetic yoke 550 is disposed can be formed on the surface of the base 40. The magnetic yoke 550 can be disposed in the base 40. In other words, the magnetic yoke 550 can be inserted into the base 40. In other words, the base 40 can be manufactured by an insert injection method in which the magnetic yoke 550 is disposed therein.

[0091] The magnetic yoke 550 can include a first magnetic yoke 551 and a second magnetic yoke 552. The first magnetic yoke 551 and the second magnetic yoke 552 can be disposed on opposite sides with the optical axis interposed therebetween.

[0092] The first magnetic yoke 551 can refer to a magnetic yoke having a size relatively greater than a size of the second magnetic yoke 552. Accordingly, an attractive force acting between the first magnetic yoke 551 and the first diaphragm magnet 511 can be greater than an attractive force acting between the second magnetic yoke 552 and the second diaphragm magnet 512.

[0093] The first magnetic yoke 551 can include a horizontal portion 551a and a vertical portion 551b. As an example, the first magnetic yoke 551 can have an "L" shape in which the horizontal portion 551a and the vertical portion 551b are coupled to each other. As another example, the horizontal portion 551a and the vertical portion 551b can be disposed as independent components and can be spaced apart from each other in directions perpendicular to each other.

[0094] The horizontal portion 551a can extend in a direction perpendicular to the optical axis, and the vertical portion 551b can extend in the optical axis direction. The size of the horizontal portion 551a can be configured to be greater than the size of the second magnetic yoke 552.

[0095] The first magnetic yoke 551 can be disposed to overlap the first diaphragm magnet 511 in two axial directions. Referring to Figure 7 , the first magnetic yoke 551 can overlap the first diaphragm magnet 511 in a first axial direction. In an example, the first axial direction can be a direction parallel to the optical axis. The first magnetic yoke 551 can overlap the first diaphragm magnet 511 in a second axial direction. In an example, the second axial direction can be an X-axis direction with respect to Figure 7 , and can be a direction perpendicular to the optical axis. With this structure, a magnetic attractive force can be formed between the first diaphragm magnet 511 and the first magnetic yoke 551 in two directions. Accordingly, the attractive force can act between the first diaphragm magnet 511 and the first magnetic yoke 551 in a diagonal direction between the first axial direction and the second axial direction.

[0096] The second magnetic yoke 552 may be a magnetic yoke having a relatively smaller size (e.g., area) than the first magnetic yoke 551. The area of ​​the second magnetic yoke 552 may be smaller than the area of ​​the horizontal portion 551a of the first magnetic yoke 551. The second magnetic yoke 552 may overlap with the second aperture magnet 512 in the first axis direction. In this example, the first axis direction may refer to the Z-axis direction and may refer to a direction parallel to the optical axis. Therefore, an attractive force may act between the second magnetic yoke 552 and the second aperture magnet 512 in the first axis direction.

[0097] Considering the attractive forces acting between the first yoke 551 and the first aperture magnet 511 and between the second yoke 552 and the second aperture magnet 512 , the attractive forces acting in the first axis direction and the second axis direction can act together between the base 40 and the rotor 30 .

[0098] Figure 8 is a plan view illustrating a portion of an aperture module according to one or more embodiments. Figure 9 is an exploded perspective view illustrating a portion of an aperture module according to one or more embodiments. Figure 10 It is along Figure 8 A cross-sectional view taken along line II' in FIG. Figure 11 It is along Figure 8 A cross-sectional view taken along line II-II'. Figure 12 It is along Figure 8 The rolling ball is not shown in the cross-sectional view taken along the line II-II' in FIG. 4 . The rolling ball disposed between the base 40 and the rotor 30 can be referred to as Figure 9 and Figure 12 Provide a description.

[0099] Reference Figure 8 The rolling portion may include a plurality of ball members, including a first rolling ball B1 and a second rolling ball B2, and may further include a third rolling ball B3 and a fourth rolling ball B4. The first rolling ball B1, the second rolling ball B2, the third rolling ball B3, and the fourth rolling ball B4 may be spaced apart from each other in the circumferential direction of the rotor 30 or the base 40.

[0100] The first and second rolling balls B1 and B2 may be disposed closer to the first aperture magnet 511 than to the second aperture magnet 512. The third rolling ball B3 may be disposed closer to the second aperture magnet 512 than to the first aperture magnet 511. The relative position of the fourth rolling ball B4 with respect to the magnet portion 510 is not limited to any particular example.

[0101] Reference Figure 9The guide groove portions can be provided on surfaces of the stator 40 and the rotor 30 facing each other. For example, a first guide groove portion 420 can be provided on the stator 40, and a second guide groove portion 320 can be provided on the rotor 30.

[0102] The first, second, third, and fourth rolling balls B1, B2, B3, and B4 can be respectively provided between the first and second guide groove portions 420 and 320.

[0103] The first guide groove portion 420 can 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 to 1-4 guide grooves 421 to 424 can be spaced apart from each other in a circumferential direction of the stator 40.

[0104] The 1-1 to 1-4 guide grooves 421 to 424 can include a bottom surface formed on one surface (e.g., an upper surface) of the stator 40 and a side surface extending from the bottom surface in an optical axis direction.

[0105] The second guide groove portion 320 can 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 to 2-4 guide grooves 321 to 324 can be spaced apart from each other in a circumferential direction of the rotor 30.

[0106] The 2-1 to 2-4 guide grooves 321 to 324 can include a bottom surface formed on one surface (e.g., a lower surface) of the rotor 30 and a side surface extending from the bottom surface in an optical axis direction, respectively.

[0107] The 1-1 guide groove 421 and the 2-1 guide groove 321 can be disposed to face each other, and the first rolling ball B1 can be disposed in a space between the 1-1 guide groove 421 and the 2-1 guide groove 321.

[0108] The 1-2 guide groove 422 and the 2-2 guide groove 322 can be disposed to face each other, and the second rolling ball B2 can be disposed in a space between the 1-2 guide groove 422 and the 2-2 guide groove 322.

[0109] The bottom surface of the 1-1 guide groove 421 and the bottom surface of the 2-1 guide groove 321 can face each other in an 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 can face each other in a direction perpendicular to the optical axis (Z-axis).

[0110] The bottom surface of the 1-2 guide groove 422 and the bottom surface of the 2-2 guide groove 322 can 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 can face each other in a direction perpendicular to the optical axis (Z-axis).

[0111] The first rolling ball B1 can make two-point contact with each of the 1-1 guide groove 421 and the 2-1 guide groove 321.

[0112] The second rolling ball B2 can make two-point contact with each of the 1-2 guide groove 422 and the 2-2 guide groove 322.

[0113] The first rolling ball B1, the 1-1 guide groove 421, the 1-2 guide groove 422, the second rolling ball B2, the 2-1 guide groove 321, and the 2-2 guide groove 322 can operate as a main guide to guide the rotation of the rotor 30.

[0114] The 1-3 guide groove 423 and the 2-3 guide groove 323 can be disposed to face each other, and the third rolling ball B3 can be disposed in a space between the 1-3 guide groove 423 and the 2-3 guide groove 323.

[0115] The bottom surface of the 1-3 guide groove 423 and the bottom surface of the 2-3 guide groove 323 can 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 can face each other in a direction perpendicular to the optical axis (Z-axis).

[0116] The third rolling ball B3 can be in contact with the 1-3 guide groove 423 and the 2-3 guide groove 323. The number of contact points between the third rolling ball B3 and the 1-3 guide groove 423 and the 2-3 guide groove 323 can be two or three.

[0117] When the number of contact points between the third rolling ball B3 and the 1-3 guide groove 423 and the 2-3 guide groove 323 is two, the third rolling ball B3 can be in contact with the bottom surface of the 1-3 guide groove 423 and the bottom surface of the 2-3 guide groove 323.

[0118] When the number of contact points between the third rolling ball B3 and the 1-3 guide groove 423 and the 2-3 guide groove 323 is three, the third rolling ball B3 can be in contact with the bottom surface of the 1-3 guide groove 423 and the bottom surface of the 2-3 guide groove 323, and can be in contact with the side surface of the 1-3 guide groove 423 or the side surface of the 2-3 guide groove 323.

[0119] A distance between the side surfaces of the 1-3 guide groove 423 and the 2-3 guide groove 323, which face each other in a direction perpendicular to the optical axis (Z-axis) direction, can be greater than the diameter of the third rolling ball B3.

[0120] The third rolling ball B3, the 1-3 guide groove 423, and the 2-3 guide groove 323 can operate as auxiliary guides to support the rotation of the rotor 30.

[0121] The rotor 30 can be supported on the base 40 by the first rolling ball B1, the second rolling ball B2, and the third rolling ball B3 when viewed in the optical axis (Z-axis) direction.

[0122] The 1-4 guide groove 424 and the 2-4 guide groove 324 can be disposed to face each other, and the fourth rolling ball B4 can be disposed in a space between the 1-4 guide groove 424 and the 2-4 guide groove 324.

[0123] A bottom surface of the 1-4 guide groove 424 and a bottom surface of the 2-4 guide groove 324 can face each other in the optical axis (Z-axis) direction, and a side surface of the 1-4 guide groove 424 and a side surface of the 2-4 guide groove 324 can face each other in a direction perpendicular to the optical axis (Z-axis).

[0124] The fourth rolling ball B4 can be in contact with at least one of the 1-4 guide groove 424 and the 2-4 guide groove 324. The number of contact points between the fourth rolling ball B4 and the 1-4 guide groove 424 and the 2-4 guide groove 324 can be one or two.

[0125] In an example, when the number of contact points between the fourth rolling ball B4 and the 1-4 guide groove 424 and the 2-4 guide groove 324 is one, the fourth rolling ball B4 can be in contact with the bottom surface of the 1-4 guide groove 424 or the bottom surface of the 2-4 guide groove 324.

[0126] When the number of contact points between the fourth rolling ball B4 and the 1-4 guide groove 424 and the 2-4 guide groove 324 is two, the fourth rolling ball B4 can be in single-point contact with one of the bottom surface of the 1-4 guide groove 424 and the bottom surface of the 2-4 guide groove 324, and can be in single-point contact with the side surface of the 1-4 guide groove 424 or the side surface of the 2-4 guide groove 324.

[0127] A distance between the bottom surface of the 1-4 guide groove 424 and the bottom surface of the 2-4 guide groove 324 in the optical axis (Z-axis) direction can be greater than a 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.

[0128] In an example, a diameter of the fourth rolling ball B4 can be smaller than diameters of the first rolling ball B1, the second rolling ball B2, and the third rolling ball B3.

[0129] The fourth rolling ball B4 can operate to prevent the rotor 30 from tilting with respect to the base 40 in the case of an external impact. In other words, by preventing the rotor 30 from tilting with respect to the base 40 in the case of an external impact, it is possible to prevent the rolling portion from being separated from the base 40 and the rotor 30.

[0130] The fourth rolling ball B4 can be an optional component, and when the fourth rolling ball B4 is not provided, it is possible to prevent tilting of the rotor 30 by adjusting the positions of the first rolling ball B1, the second rolling ball B2, and the third rolling ball B3.

[0131] When viewed in the direction of the optical axis (Z-axis), the rotor 30 can be supported on the base 40 by the first rolling ball B1, the second rolling ball B2, and the third rolling ball B3.

[0132] In this example, in order to stably rotate the rotor 30, the center point CP of the attractive force acting between the magnet portion 510 and the magnetic yoke 550 can need to be disposed in a support region formed by connecting the contact points between the first rolling ball B1 and the base 40 (or the rotor 30), the contact points between the second rolling ball B2 and the base 40 (or the rotor 30), and the contact points between the third rolling ball B3 and the base 40 (or the rotor 30).

[0133] Since the support region widens toward the first rolling ball B1 and the second rolling ball B2, it can be necessary to dispose the center point CP of the attractive force closer to the first rolling ball B1 and the second rolling ball B2.

[0134] Accordingly, by configuring the first magnetic yoke 551 and the second magnetic yoke 552 to have different sizes, the center point CP of the attractive force can be disposed closer to the first rolling ball B1 and the second rolling ball B2. The area of the first magnetic yoke 551 facing the first aperture magnet 511 can be greater than the area of the second magnetic yoke 552 facing the second aperture magnet 512.

[0135] In other words, by configuring the size of the first magnetic yoke 551 to be greater than the size of the second magnetic yoke 552, the center point CP of the attractive force can be disposed closer to the first rolling ball B1 and the second rolling ball B2.

[0136] As another example, the size of the first aperture magnet 511 can be configured to be greater than the size of the second aperture magnet 512, such that the center point CP of the attractive force can be disposed closer to the first rolling ball B1 and the second rolling ball B2.

[0137] As another example, by configuring the distance between the first aperture magnet 511 and the first yoke 551 in the optical axis (Z-axis) direction to be narrower than the distance between the second aperture magnet 512 and the second yoke 552 in the optical axis (Z-axis) direction, the center point CP of the attractive force can be disposed closer to the first rolling ball B1 and the second rolling ball B2.

[0138] Since the first yoke 551 includes the horizontal portion 551a and the vertical portion 551b, the attractive force can be exerted in the optical axis (Z-axis) direction by the first aperture magnet 511 and the first yoke 551, and the attractive force can act in a direction intersecting the optical axis (e.g., a direction perpendicular to the optical axis) or a direction intersecting the optical axis and inclined downward.

[0139] In other words, the attractive force can act on the first aperture magnet 511 in at least two directions intersecting each other.

[0140] Due to the attractive force in the optical axis direction acting between the first aperture magnet 511 and the horizontal portion 551a of the first yoke 551, the rotor 30 including the first aperture magnet 511 can be drawn toward the base 40 including the first yoke 551 in the optical axis direction.

[0141] Therefore, due to the attractive force acting between the first aperture magnet 511 and the first yoke 551, the first rolling ball B1 can 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.

[0142] In addition, due to the attractive force acting between the first aperture magnet 511 and the first yoke 551, the second rolling ball B2 can 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.

[0143] Due to the attractive force perpendicular to the optical axis direction acting between the first aperture magnet 511 and the vertical portion 551b of the first yoke 551, the rotor 30 including the first aperture magnet 511 can be drawn toward the base 40 including the first yoke 551 in a direction intersecting the optical axis.

[0144] Therefore, due to the attractive force perpendicular to the optical axis direction acting between the first aperture magnet 511 and the vertical portion 551b, the first rolling ball B1 can 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.

[0145] Due to the attractive force perpendicular to the optical axis direction acting between the first aperture magnet 511 and the vertical portion 551b, the second rolling ball B2 can 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.

[0146] The side surfaces of the 1-1 guide groove 421, the side surfaces of the 1-2 guide groove 422, the side surfaces of the 2-1 guide groove 321, and the side surfaces of the 2-2 guide groove 322 can be configured to be curved. For example, the curvature radius of the side surface of the 1-1 guide groove 421, the curvature radius of the side surface of the 1-2 guide groove 422, 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 can be the same.

[0147] 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 and 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 may be concentric.

[0148] When driving force is generated by the aperture driver 50 , the first rolling ball B1 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 B2 may roll along the side surfaces of the 1-2 guide groove 422 and the 2-2 guide groove 322 .

[0149] Therefore, the rotor 30 may rotate by being guided by the first and second rolling balls B1 and B2 .

[0150] When the rotor 30 rotates, the third rolling ball B3 may maintain a state of contact with the bottom surfaces of the 1-3 guide groove 423 and the 2-3 guide groove 323, and the rotor 30 may maintain a three-point support form with respect to the rolling portion.

[0151] In an embodiment, the aperture module 2 may sense the position of the rotor 30 .

[0152] Therefore, an aperture position sensor can be provided. The aperture position sensor can be provided on the aperture substrate 530 so as to face the magnet portion 510. For example, the aperture position sensor can face at least one of the first aperture magnet 511 and the second aperture magnet 512 in the optical axis direction. The aperture position sensor can be configured as a Hall sensor.

[0153] Figure 13 is an exploded perspective view illustrating an exemplary camera actuator according to one or more embodiments. Figure 14 is a plan view illustrating a connection plate of an exemplary camera actuator according to one or more embodiments.

[0154] Reference Figure 13 , the camera actuator 3 according to one or more embodiments may include a lens module 2000 and a housing 1100 accommodating the lens module 2000 .

[0155] 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.

[0156] In the following described embodiments, an example in which the mount 40 of the aperture module 2 is coupled to the lens module 2000 of the camera actuator 3 can be described. In this example, the aperture module 2 can move together with the lens module 2000 when the lens module 2000 moves.

[0157] The carrier 4000 can be disposed in the housing 1100 and can move in the optical axis (Z-axis) direction with respect to the housing 1100.

[0158] The lens module 2000 can be disposed on the carrier 4000, and the carrier 4000 and the lens module 2000 can move together in the optical axis direction. Accordingly, the distance between the lens module 2000 and the image sensor module can be changed to adjust the focus.

[0159] The guide frame 3000 can be disposed between the carrier 4000 and the lens module 2000. The guide frame 3000 can be used to guide the lens module 2000 to move in a direction perpendicular to the optical axis (Z-axis) direction.

[0160] The lens module 2000 can move in a direction perpendicular to the optical axis direction in order to correct the shake at the time of photographing.

[0161] The lens module 2000 can include a lens barrel 2100 and a lens holder 2200. The lens barrel 2100 can have a hollow cylindrical shape, and at least one lens for imaging an object can be accommodated in the lens barrel 2100. When a plurality of lenses are disposed in the lens barrel 2100, the plurality of lenses can be mounted in the lens barrel 2100 along the optical axis.

[0162] The lens barrel 2100 can be coupled to the lens holder 2200. Accordingly, the lens barrel 2100 and the lens holder 2200 can move together.

[0163] The mount 40 of the aperture module 2 can be coupled to the lens holder 2200.

[0164] The lens module 2000 can be accommodated in the housing 1100. For example, the housing 1100 can have a shape with an open upper portion and an open bottom portion, the carrier 4000 can be disposed in the internal space of the housing 1100, and the lens module 2000 can be accommodated in the carrier 4000.

[0165] The camera actuator 3 can adjust the focus by moving the lens module 2000 in the optical axis (Z-axis) direction, and can correct the shake at the time of photographing by moving the lens module 2000 in a direction perpendicular to the optical axis (Z-axis).

[0166] The camera actuator 3 can include a focus driver 5000 that moves the lens module 2000 in an optical axis direction and a stabilization driver 6000 that moves the lens module 2000 in a direction perpendicular to the optical axis direction.

[0167] The image sensor module can be configured as a device that converts incident light through the lens module 2000 into an electrical signal.

[0168] In an example, the image sensor module can include an image sensor and a printed circuit board connected to the image sensor, and can further include an infrared cut filter.

[0169] The infrared cut filter can block light in an infrared region among light incident to the lens module 2000.

[0170] The image sensor can convert incident light through the lens module 2000 into an electrical signal. As an example, the image sensor can be implemented as a charge-coupled device (CCD) or a complementary metal-oxide semiconductor (CMOS).

[0171] The electrical signal converted by the image sensor can be output as an image through a display device of the portable electronic device.

[0172] The image sensor can be fixed to the printed circuit board and can be electrically connected to the printed circuit board through a wiring.

[0173] The image sensor module can be disposed below the housing 1100.

[0174] The outer case 1300 can be coupled to the housing 1100 to surround an outer surface of the housing 1100 and can operate to protect internal components of the camera actuator 3.

[0175] The focus driver 5000 can move the lens module 2000 to focus on an object. For example, the focus driver 5000 can move the carrier 4000 by generating a driving force in the optical axis direction. Since the lens module 2000 is disposed in the carrier 4000, the carrier 4000 and the lens module 2000 can move together in the optical axis direction based on the driving force of the focus driver 5000.

[0176] In addition, since the base 40 of the aperture module 2 is coupled to the lens module 2000, the aperture module 2 can also move together with the lens module 2000 in the optical axis direction.

[0177] The focus driver 5000 can include a first magnet 5100 and a first coil 5300. The first magnet 5100 and the first coil 5300 can be disposed to face each other in a direction perpendicular to the optical axis.

[0178] The first magnet 5100 can be mounted on the bearing part 4000. In an example, the first magnet 5100 can be mounted on one side surface of the bearing part 4000.

[0179] The first magnet 5100 can be magnetized such that one surface (e.g., a surface facing the first coil 5300) can have both N and S poles. In an example, one surface of the first magnet 5100 facing the first coil 5300 can include an N pole, a neutral region, and an S pole in order in the optical axis direction.

[0180] The first coil 5300 can be disposed to face the first magnet 5100. For example, the first coil 5300 can be disposed to face the first magnet 5100 in a direction perpendicular to the optical axis (Z axis).

[0181] The first coil 5300 can be disposed on the substrate 7000, and the substrate 7000 can be mounted on the housing 1100 such that the first magnet 5100 and the first coil 5300 can face each other in a direction perpendicular to the optical axis. In an example, the first coil 5300 can be disposed on one surface of the substrate 7000. The substrate 7000 can be mounted on the side surface of the housing 1100 such that the first magnet 5100 and the first coil 5300 can face each other in a direction perpendicular to the optical axis (Z axis).

[0182] The housing 1100 can include an opening, and the first coil 5300 disposed on the substrate 7000 can directly face the first magnet 5100 through the opening.

[0183] The first magnet 5100 can be configured as a moving member mounted on the bearing part 4000 and moving together with the bearing part 4000 in the optical axis (Z axis) direction, and the first coil 5300 can be configured as a fixed member fixed to the substrate 7000.

[0184] When power is supplied to the first coil 5300, the bearing part 4000 can move in the optical axis direction based on electromagnetic force between the first magnet 5100 and the first coil 5300.

[0185] Since the lens module 2000 is accommodated in the bearing part 4000, the lens module 2000 can also move in the optical axis direction by moving the bearing part 4000. The aperture module 2 can also move in the optical axis direction together with the lens module 2000.

[0186] The first ball member Ba1 can be disposed between the bearing part 4000 and the housing 1100. For example, the first ball member Ba1 can be disposed between the bearing part 4000 and the housing 1100 and can reduce friction when the bearing part 4000 moves.

[0187] The first ball member Ba1 can include a plurality of balls disposed in the optical axis direction. The plurality of balls can roll in the optical axis direction when the carrier 4000 moves in the optical axis direction.

[0188] The first traction yoke 5700 can be disposed in the housing 1100. The first traction yoke 5700 can be disposed at a position facing the first magnet 5100. For example, the first coil 5300 can be disposed on one surface of the substrate 7000, and the first traction yoke 5700 can be disposed on the other surface of the substrate 7000.

[0189] An attractive force can be generated between the first magnet 5100 and the first traction yoke 5700. For example, the first traction yoke 5700 can be formed of a magnetic material. The attractive force can act between the first magnet 5100 and the first traction yoke 5700 in a direction perpendicular to the optical axis.

[0190] The first ball member Ba1 can be in contact with each of the carrier 4000 and the housing 1100 by the attractive force between the first magnet 5100 and the first traction yoke 5700.

[0191] Accommodation grooves can be disposed on surfaces of the carrier 4000 and the housing 1100 facing each other. For example, the carrier 4000 can include a first accommodation groove, and the housing 1100 can include a second accommodation groove.

[0192] Each of the first accommodation groove and the second accommodation groove can extend in the optical axis direction. The first ball member Ba1 can be disposed between the first accommodation groove and the second accommodation groove.

[0193] The first ball member Ba1 can include a first ball group BG1 and a second ball group BG2, and the first ball group BG1 and the second ball group BG2 can include a plurality of balls disposed in the optical axis (Z-axis) direction.

[0194] The first ball group BG1 and the second ball group BG2 can be spaced apart from each other in a direction perpendicular to the optical axis, for example, the X-axis direction. The number of balls in the first ball group BG1 and the number of balls in the second ball group BG2 can be different.

[0195] For example, the first ball group BG1 can include three or more balls disposed in the optical axis direction, and the second ball group BG2 can include fewer balls than the number of balls included in the first ball group BG1.

[0196] Assuming 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 group can vary. Hereinafter, for convenience of description, an embodiment in which the first ball group BG1 includes three balls and the second ball group BG2 includes two balls will be described.

[0197] In an example, among the three balls included in the first ball group BG1, the two balls disposed at the outermost sides in the direction parallel to the optical axis can have the same diameter, and the one ball disposed therebetween can have a diameter smaller than that of the balls disposed at the outermost sides.

[0198] In an example, the two balls included in the second ball group BG2 can have the same diameter.

[0199] In an embodiment, the camera actuator 3 can sense the position of the carrying part 4000 in the direction of the optical axis (Z axis).

[0200] Accordingly, the first position sensor 5500 can be provided. The first position sensor 5500 can be disposed on the substrate 7000 to face the first magnet 5100. The first position sensor 5500 can be configured as a Hall sensor.

[0201] The camera actuator 3 can correct the shake at the time of photographing by moving the lens module 2000 in the direction perpendicular to the optical axis (Z axis). Accordingly, the camera actuator 3 can include a stabilization driver 6000 to move the lens module 2000 in the direction perpendicular to the optical axis (Z axis).

[0202] The guide frame 3000 and the lens module 2000 can be sequentially accommodated in the carrying part 4000. For example, the guide frame 3000 can be disposed between the carrying part 4000 and the lens module 2000. The guide frame 3000 can have a quadrilateral plate shape having a hollow therein.

[0203] Based on the driving force of the stabilization driver 6000, the guide frame 3000 and the lens module 2000 can move together in one direction perpendicular to the optical axis (Z axis), and the lens module 2000 can move relative to the guide frame 3000 in the direction perpendicular to the optical axis (Z axis).

[0204] In an example, the guide frame 3000 and the lens module 2000 can move together in the second axis (X axis) direction perpendicular to the optical axis, and the lens module 2000 can move relative to the guide frame 3000 in the third axis (Y axis) direction perpendicular to both the optical axis and the second axis perpendicular to the optical axis.

[0205] In addition, since the base 40 of the aperture module 2 is coupled to the lens module 2000, the aperture module 2 can also move together with the lens module 2000 in the second axis (X axis) direction and the third axis (Y axis) direction.

[0206] The stabilizing driver 6000 may include a first sub-driver 6100 and a second sub-driver 6300. The first sub-driver 6100 may generate a driving force in the second axis (X axis) direction, and the second sub-driver 6300 may generate a driving force in the third axis (Y axis) direction.

[0207] The first sub-driver 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 second axis (X-axis) direction.

[0208] The second magnet 6110 may be provided on the lens module 2000. In an example, the second magnet 6110 may be mounted on one side surface of the lens holder 2200.

[0209] The second magnet 6110 may be magnetized so that one surface (e.g., the surface facing the second coil 6130) may have both an N pole and an S pole. In an example, the one surface of the second magnet 6110 facing the second coil 6130 may include an N pole, a neutral region, and an S pole in sequence along the third axis (Y axis). The second magnet 6110 may have a shape having a length along the third axis (Y axis).

[0210] 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 second axis (X axis) direction.

[0211] The second coil 6130 may have a hollow annular shape and a length in the third axis (Y axis) direction. The second coil 6130 may include a plurality of coils. For example, the second coil 6130 may include two coils spaced apart from each other in the third axis (Y axis) direction, and each coil may be arranged to face the second magnet 6110.

[0212] During image stabilization, the second magnet 6110 may be configured as a moving member mounted on the lens module 2000 , and the second coil 6130 may be configured as a fixed member fixed to the housing 1100 .

[0213] When power is supplied to the second coil 6130 , the lens module 2000 and the guide frame 3000 may move in the second axis (X-axis) direction based on the electromagnetic force between the second magnet 6110 and the second coil 6130 .

[0214] The second magnet 6110 and the second coil 6130 may generate a driving force in a direction in which the second magnet 6110 and the second coil 6130 face each other (eg, a second axis (X-axis) direction).

[0215] The second sub driver 6300 can include a third magnet 6310 and a third coil 6330. The third magnet 6310 and the third coil 6330 can be disposed to face each other in a third axis (Y axis) direction.

[0216] The third magnet 6310 can be disposed on the lens module 2000. For example, the third magnet 6310 can be mounted on the other side surface of the lens holder 2200.

[0217] The third magnet 6310 can be magnetized such that one surface (for example, a surface facing the third coil 6330) can have both an S pole and an N pole. For example, one surface of the third magnet 6310 facing the third coil 6330 can sequentially include an S pole, a neutral region, and an N pole in the second axis (X axis) direction. The third magnet 6310 can have a shape having a length in the second axis (X axis) direction.

[0218] The third coil 6330 can be disposed to face the third magnet 6310. For example, the third coil 6330 can be disposed to face the third magnet 6310 in the third axis (Y axis) direction.

[0219] The second coil 6130 and the third coil 6330 can be disposed on the substrate 7000. In an example, the second coil 6130 and the third coil 6330 can be disposed on the substrate 7000 to face the second magnet 6110 and the third magnet 6310.

[0220] The substrate 7000 can be mounted on a side surface of the housing 1100, and the second coil 6130 and the third coil 6330 can directly face the second magnet 6110 and the third magnet 6310 through an opening included in the housing 1100.

[0221] The third coil 6330 can have a ring shape having a hollow therein, and have a length in the second axis (X axis) direction. The third coil 6330 can include a plurality of coils. For example, the third coil 6330 can include two coils spaced apart from each other in the second axis (X axis) direction, and each coil can be disposed to face the third magnet 6310.

[0222] During image stabilization, the third magnet 6310 can be configured as a moving member mounted on the lens module 2000, and the third coil 6330 can be configured as a fixed member fixed to the housing 1100.

[0223] When power is supplied to the third coil 6330, the lens module 2000 can move in the third axis (Y axis) direction with respect to the guide frame 3000 based on electromagnetic force between the third magnet 6310 and the third coil 6330.

[0224] The third magnet 6310 and the third coil 6330 can generate a driving force in a direction (e.g., a third axis (Y-axis) direction) in which the third magnet 6310 and the third coil 6330 face each other.

[0225] The second magnet 6110 and the third magnet 6310 can be disposed perpendicularly to each other on a plane perpendicular to an optical axis (Z-axis), and the second coil 6130 and the third coil 6330 can also be disposed perpendicularly to each other on a plane perpendicular to the optical axis (Z-axis).

[0226] The camera actuator 3 according to one or more embodiments can include a plurality of ball members that support the guide frame 3000 and the lens module 2000. The plurality of ball members can operate to guide movement of the guide frame 3000 and the lens module 2000 during an image stabilization process, and can also operate to maintain a distance between the carrier 4000, the guide frame 3000, and the lens module 2000.

[0227] The plurality of ball members can include a second ball member Ba2 and a third ball member Ba3.

[0228] The second ball member Ba2 can guide movement of the guide frame 3000 and the lens module 2000 in a second axis (X-axis) direction, and the third ball member Ba3 can guide movement of the lens module 2000 in a third axis (Y-axis) direction.

[0229] In an example, when a driving force is generated in the second axis (X-axis) direction, the second ball member Ba2 can roll in the second axis (X-axis) direction. Accordingly, the second ball member Ba2 can guide movement of the guide frame 3000 and the lens module 2000 in the second axis (X-axis) direction.

[0230] When a driving force is generated in the third axis (Y-axis) direction, the third ball member Ba3 can roll in the third axis (Y-axis) direction. Accordingly, the third ball member Ba3 can guide movement of the lens module 2000 in the third axis (Y-axis) direction.

[0231] The second ball member Ba2 can include a plurality of ball members disposed between the carrier 4000 and the guide frame 3000, and the third ball member Ba3 can include a plurality of ball members disposed between the guide frame 3000 and the lens module 2000.

[0232] In an example, each of the second ball member Ba2 and the third ball member Ba3 can include four ball members.

[0233] A third accommodation groove 4100 to accommodate the second ball member Ba2 can be formed on at least one of surfaces of the bearing part 4000 and the guide frame 3000 facing each other in the optical axis direction. The third accommodation groove 4100 can include a plurality of grooves corresponding to a plurality of ball members of the second ball member Ba2.

[0234] The second ball member Ba2 can be accommodated in the third accommodation groove 4100 and can be interposed between the bearing part 4000 and the guide frame 3000.

[0235] When the second ball member Ba2 is accommodated in the third accommodation groove 4100, movement of the second ball member Ba2 in the optical axis and third axis (Y-axis) directions can be restricted, and the second ball member Ba2 can move only in the second axis (X-axis) direction. For example, the second ball member Ba2 can roll only in the second axis (X-axis) direction.

[0236] Accordingly, a plane of each of the plurality of grooves of the third accommodation groove 4100 can have a rectangular shape having a length in the second axis (X-axis) direction.

[0237] A fourth accommodation groove 3100 to accommodate the third ball member Ba3 can be formed on at least one of surfaces of the guide frame 3000 and the lens module 2000 (for example, the lens holder 2200) facing each other in the optical axis (Z-axis) direction. The fourth accommodation groove 3100 can include a plurality of grooves corresponding to a plurality of ball members of the third ball member Ba3.

[0238] The third ball member Ba3 can be accommodated in the fourth accommodation groove 3100 and can be interposed between the guide frame 3000 and the lens module 2000.

[0239] When the third ball member Ba3 is accommodated in the fourth accommodation groove 3100, movement of the third ball member Ba3 in the optical axis and second axis (X-axis) directions can be restricted, and the third ball member Ba3 can move only in the third axis (Y-axis) direction. In an example, the third ball member Ba3 can roll only in the third axis (Y-axis) direction.

[0240] Accordingly, a plane of each of the plurality of grooves of the fourth accommodation groove 3100 can have a rectangular shape having a length in the third axis (Y-axis) direction.

[0241] When a driving force is generated in the second axis (X-axis) direction, the guide frame 3000 and the lens module 2000 can move together in the second axis (X-axis) direction. The aperture module 2 can also move in the second axis (X-axis) direction together with the lens module 2000.

[0242] In an example, the second ball member Ba2 can roll along the second axis (X-axis) direction. In this example, movement of the third ball member Ba3 can be restricted.

[0243] In addition, when a driving force is generated in the third axis (Y-axis) direction, the lens module 2000 can move in the third axis (Y-axis) direction with respect to the guide frame 3000. The aperture module 2 can also move in the third axis (Y-axis) direction together with the lens module 2000.

[0244] In an example, the third ball member Ba3 can roll along the third axis (Y-axis) direction. In this case, movement of the second ball member Ba2 can be restricted.

[0245] In an embodiment, the camera actuator 3 can sense a position of the lens module 2000 in a direction perpendicular to the optical axis (Z-axis).

[0246] Accordingly, a second position sensor 6150 and a third position sensor 6350 can be provided. The second position sensor 6150 can be disposed on the substrate 7000 to face the second magnet 6110, and the third position sensor 6350 can be disposed on the substrate 7000 to face the third magnet 6310. The second position sensor 6150 and the third position sensor 6350 can be configured as Hall sensors.

[0247] At least one of the second position sensor 6150 and the third position sensor 6350 can include two Hall sensors. For example, the third position sensor 6350 can include two Hall sensors disposed to face the third magnet 6310.

[0248] Whether the lens module 2000 is rotated can be sensed by the two Hall sensors facing the third magnet 6310. Since the third coil 6330 includes two coils facing the third magnet 6310, by controlling the third coil 6330, a rotational force applied to the lens module 2000 can be canceled.

[0249] Rotation of the lens module 2000 can be prevented by the third accommodation groove 4100 and the fourth accommodation groove 3100 in which the second ball member Ba2 and the third ball member Ba3 are disposed, but the lens module 2000 can be slightly rotated due to the influence of tolerances that occur during the process of manufacturing equipment.

[0250] However, the camera actuator 3 according to an embodiment can determine whether the lens module 2000 is rotated by the third coil 6330 and the third position sensor 6350, and thereby cancel the rotational force.

[0251] In an embodiment, a second yoke and a third yoke can be provided so that the bearing part 4000 and the guide frame 3000 can maintain contact with the second ball member Ba2, and the guide frame 3000 and the lens module 2000 can maintain contact with the third ball member Ba3.

[0252] The second yoke and the third yoke can be fixed to the bearing part 4000 and can face the second magnet 6110 and the third magnet 6310 in the optical axis (Z-axis) direction.

[0253] Accordingly, an attractive force can be generated between the second yoke and the second magnet 6110 and between the third yoke and the third magnet 6310 in the optical axis (Z-axis) direction.

[0254] The lens module 2000 and the guide frame 3000 can be pressed in a direction toward the second yoke and the third yoke by the attractive force between the second yoke and the second magnet 6110 and between the third yoke and the third magnet 6310, so that the guide frame 3000 and the lens module 2000 can maintain contact with the second ball member Ba2 and the third ball member Ba3.

[0255] The second yoke and the third yoke can be formed of a material that generates an attractive force with the second magnet 6110 and the third magnet 6310. In an example, the second yoke and the third yoke can be formed of a magnetic material.

[0256] The OIS stopper 2300 can be coupled to the bearing part 4000. The OIS stopper 2300 can be coupled to the bearing part 4000 to cover at least a portion of an upper surface of the lens module 2000. For example, the OIS stopper 2300 can cover at least a portion of an upper surface of the lens holder 2200.

[0257] The OIS stopper 2300 can prevent the guide frame 3000 and the lens module 2000 from being separated from the bearing part 4000 due to an external impact.

[0258] In addition, the AF stopper 2400 can be coupled to the housing 1100. The AF stopper 2400 can include a buffer protrusion disposed at a position facing the first ball member Ba1 in the optical axis (Z-axis) direction.

[0259] The AF stopper 2400 can prevent the bearing part 4000 and the first ball member Ba1 from being released to the outside due to an external impact.

[0260] Referring to Figure 13 and Figure 14 The camera actuator 3 can include a connection plate 8000. The connection plate 8000 can connect the aperture substrate 530 of the aperture module 2 to a printed circuit board of the image sensor module.

[0261] In other words, the aperture substrate 530 may receive power through the connection board 8000 .

[0262] The connection board 8000 may include a fixed portion 8100, a moving portion 8300, and a connection portion 8500. In an example, the connection board 8000 may be configured as an RFPCB.

[0263] The moving portion 8300 may be disposed inside the fixed portion 8100 , and the connecting portion 8500 may be disposed between the fixed portion 8100 and the moving portion 8300 .

[0264] 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 configured as a rigid PCB. The fixing portion 8100 may have a quadrilateral frame shape.

[0265] A connector substrate extending in the optical axis direction may be provided at one side of the fixing portion 8100. The connector substrate may be connected to a printed circuit board of the image sensor module.

[0266] The moving part 8300 can be coupled to the aperture module 2. For example, the moving part 8300 can be mounted on the base 40 of the aperture module 2. The moving part 8300 can be configured as a moving member that moves together with the aperture module 2. The moving part 8300 can be configured as a rigid PCB. The moving part 8300 can have a ring shape.

[0267] A portion of the moving portion 8300 may be coupled to the aperture substrate 530 of the aperture module 2. For example, a connection pad may be provided on one side of the moving portion 8300, and the aperture substrate 530 may be coupled to the connection pad of the moving portion 8300.

[0268] The connecting portion 8500 may be provided between the moving portion 8300 and the fixed portion 8100 and may connect the moving portion 8300 to the fixed portion 8100. For example, one side of the connecting portion 8500 may be connected to the moving portion 8300, while the other side of the connecting portion 8500 may be connected to the fixed portion 8100.

[0269] The connection portion 8500 may be configured as a flexible PCB. When the moving portion 8300 moves, the connection portion 8500 disposed between the moving portion 8300 and the fixed portion 8100 may be bent.

[0270] The connecting portion 8500 may extend along a circumference of at least a portion of the moving portion 8300. The connecting portion 8500 may have a shape of a single bridge-shaped member or a plurality of bridges.

[0271] Since the connection portion 8500 is configured to be bent, power can be stably supplied to the aperture module 2 even when the aperture module 2 moves together with the lens module 2000.

[0272] Since the aperture module 2 can move together with the lens module 2000, the magnet portion 510 and the coil portion 520 included in the aperture module 2 can also move together with the lens module 2000.

[0273] Therefore, even when the lens module 2000 moves, the distance between the magnet portion 510 and the coil portion 520 can be maintained, thereby improving the driving stability of the aperture module 2.

[0274] According to the foregoing embodiment, the aperture module can secure a wider configuration space for the blades, thereby providing an aperture module that operates stably.

[0275] While the present disclosure includes specific examples, it will be apparent after understanding the disclosure of the present application that various changes in form and detail can be made in these examples without departing from the spirit and scope of the claims and their equivalents. The examples described herein are considered to be merely descriptive, not for the purpose of limitation. The description of features or aspects in each example is considered to be applicable to similar features or aspects in other examples. Suitable results can also be obtained if the described techniques are performed in a different order, and / or if components in the described systems, architectures, devices, or circuits are combined and / or replaced or supplemented by other components or their equivalents.

[0276] Therefore, in addition to the disclosure of the above and all the drawings, the scope of the present disclosure also includes the claims and their equivalents, i.e., all variations within the scope of the claims and their equivalents will be interpreted as included in the present disclosure.

Claims

1. An aperture module, characterized in that: include: base; a rotor configured to rotate relative to the base; Multiple blades form an entrance hole; a plurality of ball members disposed between the base and the rotor; a magnet portion, disposed on one of the rotor and the base; as well as a coil portion provided on the other of the rotor and the base, The attractive force acts between the base and the rotor in a diagonal direction between a first axis direction parallel to the optical axis and a second axis direction perpendicular to the first axis direction.

2. The aperture module according to claim 1, wherein: Also includes: a first magnetic yoke, disposed on the base; as well as a second magnetic yoke disposed opposite to the first magnetic yoke relative to the optical axis; wherein the magnet portion includes a first aperture magnet and a second aperture magnet disposed on opposite sides of the optical axis, and Here, an attractive force acts between the first aperture magnet and the first yoke in the first axis direction and the second axis direction.

3. The aperture module according to claim 2, wherein: An attractive force acts between the second aperture magnet and the second yoke in the first axis direction.

4. The aperture module according to claim 1, wherein: Also includes: a first magnetic yoke, disposed on the base; as well as a second magnetic yoke disposed opposite to the first magnetic yoke relative to the optical axis; wherein the magnet portion includes a first aperture magnet and a second aperture magnet disposed on opposite sides of the optical axis, and The attractive force acting between the first aperture magnet and the first magnetic yoke is greater than the attractive force acting between the second aperture magnet and the second magnetic yoke.

5. The aperture module according to claim 1, wherein: The base includes a yoke on which a magnetic attraction force acting together with the magnet portion acts, wherein the magnetic yoke includes a first magnetic yoke and a second magnetic yoke disposed on opposite sides of the optical axis, and Wherein, the cross section of the first magnetic yoke has an "L" shape.

6. The aperture module according to claim 5, characterized in that: An area of ​​the first yoke is larger than an area of ​​the second yoke.

7. The aperture module according to claim 1, wherein: The magnet portion and the coil portion are arranged to overlap each other in the second axis direction.

8. The aperture module according to claim 1, wherein: Also includes: a first magnetic yoke, disposed on the base, wherein the magnet portion includes a first aperture magnet and a second aperture magnet disposed on opposite sides of the optical axis, wherein the coil portion includes a first aperture coil and a second aperture coil disposed on opposite sides of the optical axis, and The first yoke, the first aperture magnet, and the first aperture coil overlap with each other in the second axis direction.

9. The aperture module according to claim 1, wherein: first portions of the plurality of ball members support the rotor in the first axial direction and the second axial direction, and The second portions of the plurality of ball members support the rotor in the first axial direction.

10. The aperture module according to claim 1, wherein: The magnet portion includes a first aperture magnet and a second aperture magnet disposed on opposite sides of the optical axis, wherein the plurality of ball members include a first rolling ball and a second rolling ball, wherein the first rolling ball and the second rolling ball are spaced apart from each other in a circumferential direction of the rotor or the base, and the first aperture magnet is located between the first rolling ball and the second rolling ball, and The first rolling ball and the second rolling ball support the rotor in the first axial direction and the second axial direction.

11. An aperture module, characterized in that: include: base; a rotor configured to rotate relative to the base; Multiple blades form an entrance hole; a plurality of ball members disposed between the base and the rotor; a magnet portion, disposed on the rotor; A coil portion is provided on the base; as well as a first magnetic yoke, disposed on the base, wherein the magnet portion includes a first aperture magnet and a second aperture magnet disposed on opposite sides of the optical axis, and The first magnetic yoke overlaps with the first aperture magnet in the optical axis direction and in a direction perpendicular to the optical axis.

12. The aperture module according to claim 11, wherein: Also includes: a second yoke disposed on an opposite side of the first yoke relative to the optical axis, An attractive force acts between the second aperture magnet and the second yoke in the optical axis direction.

13. The aperture module according to claim 11, wherein: The coil portion includes a first aperture coil facing the first aperture magnet, and The first aperture coil and the first aperture magnet are arranged to face each other in a direction perpendicular to the optical axis.

14. The aperture module according to claim 12, wherein: The first magnetic yoke includes a horizontal portion perpendicular to the optical axis direction, and The second magnetic yoke has a smaller size than the horizontal portion of the first magnetic yoke.

15. The aperture module according to claim 11, wherein: The first portions of the plurality of ball members support the rotor in the optical axis direction and in a direction perpendicular to the optical axis, and The second portions of the plurality of ball members support the rotor in the optical axis direction.

16. The aperture module according to claim 11, wherein: A portion of the plurality of ball members includes a first rolling ball and a second rolling ball spaced apart from each other in a circumferential direction of the rotor or the base, and the first aperture magnet is located between the first rolling ball and the second rolling ball, and The first rolling ball and the second rolling ball support the rotor in a direction perpendicular to the optical axis.

17. A camera module, characterized in that: include: lens module; as well as Aperture module, Wherein, the aperture module includes: base; a rotor configured to rotate relative to the base; Multiple blades form an entrance hole; a plurality of ball members disposed between the base and the rotor; a magnet portion provided on one of the rotor and the base; and a coil portion provided on the other of the rotor and the base, The attractive force acts between the base and the rotor in a diagonal direction between a first axis direction parallel to the optical axis and a second axis direction perpendicular to the first axis direction.

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