Aperture module and camera module comprising an aperture module

Abstract

The present disclosure relates to an aperture module. The aperture module includes a base, a rotating member disposed on one side of the base, a plurality of blades disposed on one side of the rotating member and defining an entrance aperture, and a first spacer disposed on one side of the plurality of blades and coupled to the rotating member. The rotating member includes a plurality of guide protrusions, the plurality of blades are respectively coupled to the plurality of guide protrusions, and the first spacer overlaps with part of the plurality of guide protrusions in an optical axis direction. The present disclosure also relates to a camera module including the aperture module.

Description

[0001] Cross-reference to related applications

[0002] This application claims the benefit of priority to Korean Patent Application No. 10-2025-0049217, filed on April 16, 2025, with the Korean Intellectual Property Office, the entire disclosure of which is incorporated herein by reference for all purposes. Technical Field

[0003] This disclosure relates to an aperture module and a camera module including the aperture module. Background Technology

[0004] Recently, camera modules have been used in portable electronic devices such as smartphones, tablet PCs, and laptops.

[0005] The camera module may include an aperture module that adjusts the amount of light incident on the camera module.

[0006] The aperture module can have a structure in which blades and spacers are stacked sequentially on a movable pin disposed in a rotating component.

[0007] However, the aperture module can be opened from the top of the moving pin, and therefore there is a risk that the blades and spacers may detach from the moving pin.

[0008] The above information is presented as background information and is intended to aid in understanding this disclosure. No determination or assertion is made as to whether any of the above content can be used as prior art with respect to this disclosure. Summary of the Invention

[0009] The summary portion of this invention is intended to provide a brief overview of the chosen concepts, which will be further described in the detailed description portion below. This summary portion is not intended to identify key or essential features of the claimed subject matter, nor is it intended to help determine the scope of the claimed subject matter.

[0010] In one general aspect, the aperture module includes a base, a rotating member disposed on one side of the base, a plurality of blades disposed on one side of the rotating member and defining an entrance aperture, and a first spacer disposed on one side of the plurality of blades and connected to the rotating member. The rotating member includes a plurality of guide protrusions, the plurality of blades being respectively connected to the plurality of guide protrusions, and the first spacer overlapping a portion of the plurality of guide protrusions in the optical axis direction.

[0011] The first spacer may include a plurality of connecting holes formed at positions corresponding to the plurality of guide protrusions.

[0012] The number of multiple connecting holes can correspond to the number of multiple guide protrusions, or it can be less than the number of multiple guide protrusions.

[0013] The plurality of connecting holes may include a first connecting hole having a first diameter and a second connecting hole having a second diameter. The second diameter may be larger than the first diameter and may be larger than the diameter of each of the plurality of guide protrusions.

[0014] The first spacer may include an extension extending from the first spacer to one side of the guide protrusion, and the extension may overlap with a portion of the guide protrusion in the optical axis direction.

[0015] The plurality of connecting holes may also include a third connecting hole defined by an extension and having a third diameter, and the third diameter may be smaller than the first diameter and may be smaller than the diameter of each of the plurality of guide protrusions.

[0016] Among the first connecting hole, the second connecting hole, and the third connecting hole, the third connecting hole can be set to have the largest number, and the second connecting hole can be set to have the smallest number.

[0017] The extended portion can be formed to completely cover the guide protrusion.

[0018] The aperture module may also include a cover disposed on one side of the first spacer, wherein the distance between the cover and the first spacer in the optical axis direction may be less than the thickness of each of the plurality of blades in the optical axis direction.

[0019] Multiple blades may include an upper blade group and a lower blade group arranged at different heights along the optical axis, and a first spacer may be arranged on one side of the upper blade group.

[0020] The aperture module may also include a second spacer disposed between the lower blade assembly and the rotating component.

[0021] Multiple blades can be connected to the base and the rotating component respectively. The rotating component can be configured to rotate relative to the base about the optical axis, and the multiple blades can be configured to adjust the size of the incident aperture in response to the rotation of the rotating component.

[0022] In another general aspect, the aperture module includes a base, a rotating element supported by the base and configured to rotate relative to the base, a plurality of blades respectively connected to the base and the rotating element, and a first spacer connected to the rotating element and arranged to overlap with the plurality of blades. The rotating element includes a plurality of guide protrusions, the plurality of blades and the first spacer are connected to the plurality of guide protrusions, and the first spacer includes a plurality of connecting holes formed at positions corresponding to the plurality of guide protrusions and having different diameters.

[0023] The plurality of connecting holes may include a first connecting hole having a first diameter, a second connecting hole having a second diameter, and a third connecting hole having a third diameter. The second diameter may be larger than the first diameter and may be larger than the diameter of each of the plurality of guide protrusions, and the third diameter may be smaller than the first diameter and may be smaller than the diameter of each of the plurality of guide protrusions.

[0024] The camera module may include an aperture module and an actuator, the actuator including a lens module and configured to move in at least one direction, either in the optical axis direction or in a direction perpendicular to the optical axis.

[0025] The aperture module can be attached to the actuator and configured to move with the actuator.

[0026] Other features and aspects will become apparent from the following detailed description and accompanying drawings. Attached Figure Description

[0027] Figure 1 This is a perspective view of a camera module according to an exemplary embodiment of the present disclosure.

[0028] Figure 2 It is to move the aperture module from Figure 1 A stereoscopic view showing the camera module after it has been separated.

[0029] Figure 3A It is a 3D view of an aperture module with a relatively small entrance aperture, and Figure 3B It is a three-dimensional view of an aperture module with a relatively large entrance aperture.

[0030] Figure 4 This is an exploded perspective view of an aperture module according to an exemplary embodiment of the present disclosure.

[0031] Figure 5 yes Figure 4 A 3D view of the driver section of the aperture module.

[0032] Figure 6 yes Figure 4 A plan view of the ball bearing section of the aperture module.

[0033] Figure 7 It is to move the traction yoke part from Figure 4 A three-dimensional view showing the base after it has been separated.

[0034] Figure 8 It is shown Figure 4 A diagram showing the direction of attraction of the aperture module.

[0035] Figure 9 It is a plan view of the ball rolling part and the guide groove therein.

[0036] Figure 10 This is a plan view of an aperture module (without the cover) according to an exemplary embodiment of the present disclosure.

[0037] Figure 11 It is along Figure 10 The cross-sectional view taken from line I-I'.

[0038] Figure 12 This is a plan view of an aperture module (without the cover) according to another exemplary embodiment of the present disclosure.

[0039] Figure 13 It is along Figure 12 The cross-sectional view taken from line II-II'.

[0040] Figure 14 yes Figure 12 A cross-sectional view of the modified example.

[0041] Throughout the accompanying drawings and detailed embodiments, 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 dimensions, scale, and depiction of elements in the drawings may be exaggerated. Detailed Implementation

[0042] In the following description, although examples of this disclosure will be described in detail with reference to the accompanying drawings, it should be noted that the examples are not limited thereto.

[0043] The following detailed embodiments are provided to aid the reader in gaining a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will become apparent upon understanding this disclosure. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein, except for operations that must occur in a specific order, as will become apparent upon understanding this disclosure. Furthermore, for clarity and brevity, descriptions of features well-known in the art may be omitted.

[0044] 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 in which the methods, apparatuses, and / or systems described herein will be apparent upon understanding this disclosure.

[0045] Throughout this specification, when an element such as a layer, region, or substrate is described as being "on," "connected to," or "attached to" another element, the element may be directly "on," directly "connected to," or directly "attached to" the other element, or there may be one or more other elements between the element and the other element. Conversely, when an element is described as being "directly on," "directly connected to," or "directly attached to" another element, there are no other elements between the element and the other element.

[0046] 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.

[0047] Although terms such as “first,” “second,” and “third” may be used herein to describe various components, parts, regions, layers, or sections, these components, parts, regions, layers, or sections are not limited by these terms. Rather, these terms are used only to distinguish one component, part, region, layer, or section from another. Therefore, without departing from the teachings of the examples described herein, the first component, first part, first region, first layer, or first section mentioned in these examples may also be referred to as a second component, second part, second region, second layer, or second section.

[0048] Spatial relative terms such as “above,” “above,” “below,” and “under” may be used herein for descriptive convenience to describe the relationship of one element relative to another, as shown in the accompanying drawings. In addition to covering the orientation depicted in the drawings, these spatial relative terms are intended to also cover different orientations of the device in use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “above” another element would be located “below” or “under” that other element. Thus, 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 spatial relative terms used herein should be interpreted accordingly.

[0049] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the terms “a,” “an,” and “the” are intended to include the plural form as well. The terms “comprising,” “including,” and “having” indicate the presence of the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0050] Due to manufacturing techniques and / or tolerances, the shapes shown in the accompanying drawings may vary. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include shape variations that occur during manufacturing.

[0051] It should be noted that in this document, the term "may" is used relative to examples, such as regarding what an example may include or implement, meaning that there exists at least one example that includes or implements such a feature, but not all examples are limited to this.

[0052] The features of the examples described herein can be combined in various ways that will become apparent upon understanding this disclosure. Furthermore, although the examples described herein have multiple configurations, other configurations that will become apparent upon understanding this disclosure are also possible.

[0053] This disclosure provides an aperture module that reduces or eliminates the risk of component detachment, and a camera module that includes the aperture module.

[0054] This disclosure relates to camera modules, and more specifically, to camera modules installed in portable electronic devices such as smartphones or tablet PCs.

[0055] Figure 1 This is a perspective view of a camera module according to exemplary embodiments of the present disclosure, and Figure 2 It is to move the aperture module from Figure 1 A stereoscopic view showing the camera module after it has been separated.

[0056] Reference Figure 1 and Figure 2 The camera module 1 may include an aperture module 2 and an actuator 3.

[0057] The aperture module 2 can adjust the amount of light incident on the camera module 1, and the actuator 3 can perform focus adjustment and image stabilization of the camera module 1. The actuator 3 can be configured to be movable in at least one direction, either in the optical axis direction (Z-axis direction) or in a direction perpendicular to the optical axis (Z-axis).

[0058] In an exemplary embodiment, the actuator 3 may include a lens module 2000. The lens module 2000 can be moved in the optical axis direction (Z-axis direction) by the actuator 3 during focus adjustment, and can be moved in directions perpendicular to the optical axis (Z-axis) (X-axis and Y-axis directions) during image stabilization.

[0059] The aperture module 2 can be positioned on the upper side of the actuator 3 to adjust the amount of light incident on the lens module 2000 of the actuator 3.

[0060] Figure 3A It is a 3D view of an aperture module with a relatively small entrance aperture, and Figure 3B It is a three-dimensional view of an aperture module with a relatively large entrance aperture.

[0061] In an exemplary embodiment, the aperture module 2 may include an entrance aperture 210 through which light passes and may be configured to adjust the amount of light incident on the lens module 2000 by changing the size of the entrance aperture 210.

[0062] Figure 4 This is an exploded perspective view of an aperture module according to an exemplary embodiment of the present disclosure.

[0063] Reference Figure 4 According to an exemplary embodiment of the present disclosure, the aperture module 2 may include a base 400, a rotating member 300, a blade 200, and a driving portion 500 (hereinafter referred to as the aperture driving portion).

[0064] The base 400 can be connected to the actuator 3 of the camera module 1. For example, the base 400 can be connected to the lens module 2000. Therefore, when the lens module 2000 moves, the aperture module 2 can also move together.

[0065] The base 400 can be a movable component that moves together with the lens module 2000 during focus adjustment and image stabilization of the camera module 1. Conversely, the base 400 can be a fixed component that does not move during operation of the aperture module 2.

[0066] The rotating member 300 can be spaced apart from the base 400 in the optical axis direction (Z-axis direction) and can rotate relative to the base 400. The rotating member 300 can rotate relative to the base 400 about the optical axis (Z-axis).

[0067] The size of the entrance aperture 210 can be changed due to the rotation of the rotating part 300.

[0068] The blade 200 can be configured as multiple blades 200, and can form an entrance aperture 210.

[0069] In an exemplary embodiment, blade 200 may include six blades, and the six blades may be divided into three upper blades and three lower blades.

[0070] Three blades can form a group.

[0071] The upper blade group 200-1 and the lower blade group 200-2 can be arranged along the optical axis (Z-axis direction). Each blade included in the upper blade group 200-1 can be offset relative to each blade included in the lower blade group 200-2. For example, one blade included in the upper blade group 200-1 can overlap with two blades included in the lower blade group 200-2.

[0072] In another exemplary embodiment, the number of blades 200 can be changed, and the arrangement of the blades 200 can also be changed according to the number of blades 200.

[0073] The blade 200 can define the entrance aperture 210. That is, in an exemplary embodiment, the entrance aperture 210 can be defined by six blades.

[0074] The position of the blade 200 can be changed while the blade 200 rotates due to the driving force generated by the aperture drive section 500. The size of the entrance aperture 210 can be determined based on the position of the blade 200.

[0075] The blade 200 can be connected to the base 400 and the rotating part 300.

[0076] The blade 200 may include a through hole 220 passing through the blade 200 in the optical axis direction (Z-axis direction). The through hole 220 may be formed at the outer end of the blade 200 and connected to the base 400.

[0077] The base 400 may include a protrusion 410 that protrudes in the optical axis direction (Z-axis direction).

[0078] The through-hole 220 of the blade 200 can be connected to the protrusion 410 of the base 400. The number of protrusions 410 along the circumferential direction of the base 400 can be equal to the number of blades 200. Therefore, the protrusions 410 and the blades 200 can be connected to each other in a one-to-one correspondence.

[0079] The protrusion 410 can form the rotation axis of the blade 200. That is, the blade 200 can rotate using the protrusion 410 as the rotation axis, so that the through hole 220 and the protrusion 410 can be firmly connected to each other.

[0080] Furthermore, the blade 200 may include a guide hole 230 passing through the blade 200 in the optical axis direction (Z-axis direction). The guide hole 230 may be formed at a position spaced apart from the position of the through hole 220.

[0081] The rotating component 300 may include a guide protrusion 310 protruding in the optical axis direction (Z-axis direction).

[0082] The guide hole 230 of the blade 200 can be connected to the guide protrusion 310 of the rotating member 300. The number of guide protrusions 310 along the circumferential direction of the rotating member 300 can be equal to the number of blades 200. Therefore, the guide protrusions 310 and the blades 200 can be connected to each other in a one-to-one correspondence.

[0083] The guide hole 230 can have a certain length. Therefore, when the rotating part 300 rotates, the guide protrusion 310 can move within the guide hole 230, and the blade 200 can use the protrusion 410 as a rotation axis to rotate.

[0084] The above descriptions related to blade 200 are equally applicable to all blades.

[0085] The aperture module 2 according to an exemplary embodiment of the present disclosure may further include a cover 100.

[0086] The cover 100 can be connected to the base 400, and the blade 200 and the rotating member 300 can be disposed in the space between the cover 100 and the base 400.

[0087] Furthermore, the aperture module 2 according to an exemplary embodiment of the present disclosure may include spacers disposed on the upper and lower sides of the blade 200.

[0088] Reference Figure 4 The first spacer (or top spacer) 110 may be disposed between the blade 200 and the cover 100, and the second spacer (or bottom spacer) 120 may be disposed between the blade 200 and the rotating member 300.

[0089] In an exemplary embodiment, the first spacer 110 may be disposed between the upper blade assembly 200-1 and the cover 100.

[0090] The first spacer 110 may have a through hole 111 through which light passes, and the peripheral portion of the through hole 111 may overlap with the blade included in the upper blade assembly 200-1.

[0091] The through hole 111 of the first spacer 110 may have a diameter greater than the maximum diameter of the incident aperture 210 formed by the blade 200.

[0092] In an exemplary embodiment, the second spacer 120 may be disposed between the lower blade assembly 200-2 and the rotating member 300.

[0093] The second spacer 120 may have a through hole 121 through which light passes, and the peripheral portion of the through hole 121 may overlap with the blades included in the lower blade group 200-2.

[0094] The through-hole 121 of the second spacer 120 may have a diameter larger than the maximum diameter of the entrance aperture 210 formed by the blade 200. In addition, the diameter of the through-hole 121 of the second spacer 120 may be smaller than the diameter of the through-hole 111 of the first spacer 110.

[0095] The first spacer 110 and the second spacer 120 may have surfaces coated with a black coating.

[0096] Furthermore, the first spacer 110 and the second spacer 120 can be connected to the rotating member 300. Specifically, according to an exemplary embodiment of the present disclosure, the first spacer 110 can be securely connected to the rotating member 300.

[0097] In this disclosure, the connection structure between the first spacer 110 and the rotating member 300 prevents the first spacer 110 and the blade 200 from moving upward and disengaging from the rotating member 300. A detailed description thereof is provided below.

[0098] Figure 5 yes Figure 4 A 3D view of the driver section of the aperture module.

[0099] The aperture drive section 500 can generate a driving force for rotating the rotating member 300. Due to the rotation of the rotating member 300, the guide protrusion 310 can move within the guide hole 230, and the blade 200 can rotate using the protrusion 410 as a rotation axis. Through this operation, the size of the entrance aperture 210 defined by the blade 200 can be changed.

[0100] The aperture driving section 500 may include a magnet section 510 and a coil section 520 that are opposite to each other in the optical axis direction (Z-axis direction).

[0101] The magnet portion 510 and the coil portion 520 can be respectively disposed on the rotating member 300 and the base 400. For example, the magnet portion 510 can be disposed on the lower surface of the rotating member 300 facing the base 400, and the coil portion 520 can be disposed on the upper surface of the base 400 facing the rotating member 300.

[0102] In an exemplary embodiment, the magnet portion 510 may be a movable member that moves together with the rotating member 300, and the coil portion 520 may be a fixed member. In another exemplary embodiment, the positions of the magnet portion 510 and the coil portion 520 may be interchanged.

[0103] The magnet portion 510 may include a plurality of magnets spaced apart from each other. For example, the magnet portion 510 may include a first magnet 511 and a second magnet 512 arranged to be opposite each other about the optical axis (Z-axis).

[0104] The coil portion 520 may include a plurality of coils spaced apart from each other. For example, the coil portion 520 may include a first coil 521 and a second coil 522 arranged to be opposite each other about the optical axis (Z-axis). The first coil 521 may be opposite to the first magnet 511 in the optical axis direction (Z-axis direction), and the second coil 522 may be opposite to the second magnet 512 in the optical axis direction (Z-axis direction).

[0105] The surface of the first magnet 511 opposite to the first coil 521 may have both an N pole and a S pole. For example, in the rotation direction of the rotating member 300, the surface of the first magnet 511 opposite to the first coil 521 may sequentially have an N pole, a neutral region, and an S pole. The second magnet 512 may also be configured in the same manner.

[0106] The first coil 521 and the second coil 522 can be disposed on the base 400 via the substrate 540. For example, the substrate 540 can be disposed on the upper surface of the base 400, and the first coil 521 and the second coil 522 can be mounted on a surface of the substrate 540 facing the rotating member 300.

[0107] The substrate 540 may include an extension 541 extending from the upper surface of the base 400 to the side surface of the base 400. The extension 541 may be connected to the actuator 3 of the camera module 1, and more specifically, may be connected to the substrate disposed in the actuator 3.

[0108] When power is supplied to the coil portion 520, an electromagnetic force can be generated between the magnet portion 510 and the coil portion 520. This electromagnetic force can be used as a driving force for rotating the rotating component 300.

[0109] The position sensor 530 can be mounted on the substrate 540 together with the coil portion 520.

[0110] The position sensor 530 can be configured to be opposite at least one of the first magnet 511 and the second magnet 512 in the optical axis direction (Z-axis direction), and can detect changes in the magnetic field to detect the position of the rotating member 300. For example, the position sensor 530 can be configured as a Hall sensor.

[0111] Figure 6 yes Figure 4 A plan view of the ball bearing section of the aperture module. Figure 7 It is to move the traction yoke part from Figure 4 A three-dimensional view showing the base after it has been separated. Figure 8 It is shown Figure 4 A diagram showing the direction of attraction of the aperture module. Figure 9 It is a plan view of the ball rolling part and the guide groove therein.

[0112] The ball rolling part RB can be set between the rotating part 300 and the base 400.

[0113] During the rotation of the rotating component 300, the ball rolling portion RB can reduce friction by rolling in the rotation direction of the rotating component 300.

[0114] The ball rolling portion RB may include a plurality of ball members spaced apart from each other in the circumferential direction of the base 400 (or the rotating member 300). For example, the ball rolling portion RB may include three or more ball members. In an exemplary embodiment, the ball rolling portion RB may include four ball members, such as... Figure 6 As shown in the image.

[0115] The traction yoke portion 550 may be disposed on the base 400. For example, the traction yoke portion 550 may be disposed on the base 400 in an insert manner.

[0116] The traction yoke portion 550 can be positioned opposite the magnet portion 510 in the optical axis direction (Z-axis direction). For example, the traction yoke portion 550 may include a first traction yoke 551 opposite the first magnet 511 in the optical axis (Z-axis direction) and a second traction yoke 552 opposite the second magnet 512 in the optical axis (Z-axis direction).

[0117] The traction yoke portion 550 can be formed of a magnetic material and can generate an attractive force with the magnet portion 510. Due to the attractive force between the traction yoke portion 550 and the magnet portion 510, the ball rolling portion RB can maintain contact with the rotating member 300 and the base 400.

[0118] The ball rolling portion RB may include a first ball member RB1, a second ball member RB2 and a third ball member RB3 spaced apart from each other in the circumferential direction of the base 400.

[0119] The first ball component RB1 to the third ball component RB3 may each include one or more balls. For example, the number of balls included in the first ball component RB1 may be greater than the number of balls included in each of the second ball component RB2 and the third ball component RB3.

[0120] The first ball component RB1 may include two balls (hereinafter referred to as the first ball RB1a and the second ball RB1b), and the second ball component RB2 and the third ball component RB3 may each include one ball.

[0121] The first ball component RB1, namely the first ball RB1a and the second ball RB1b, can be disposed around the first magnet 511, and the second ball component RB2 can be disposed around the second magnet 512. The position of the third ball component RB3 is not limited.

[0122] The base 400 and the rotating member 300 may include guide groove portions in which the ball rolling portion RB is disposed. For example, the base 400 may include a first guide groove portion 420, and the rotating member 300 may include a second guide groove portion 320.

[0123] The first guide groove portion 420 and the second guide groove portion 320 can be opposite each other in the optical axis direction (Z-axis direction), and the ball rolling portion RB can be disposed between the first guide groove portion 420 and the second guide groove portion 320.

[0124] The number of the first guide groove portion 420 and the second guide groove portion 320 can respectively correspond to the number of balls included in the ball rolling portion RB.

[0125] In an exemplary embodiment, the first guide groove portion 420 and the second guide groove portion 320 may each include four guide grooves. The balls included in the first ball members RB1 to the third ball members RB3 may be respectively accommodated in these guide grooves.

[0126] The first ball bearing member RB1, namely the first ball RB1a and the second ball RB1b, disposed around the first magnet 511, can be used as a main guide. The first ball RB1a and the second ball RB1b can respectively make two-point contact with the corresponding guide groove.

[0127] The second ball bearing component RB2 can be used as an auxiliary guide. The second ball bearing component RB2 can make one or two-point contact with the corresponding guide groove.

[0128] The third ball bearing component RB3 can be used to prevent the rotating part 300 from tilting. The third ball bearing component RB3 can be in contact with the corresponding guide groove at one or two points. The third ball bearing component RB3 can be selectively configured.

[0129] Reference Figure 6 The rotating component 300 can be supported at three points on the base 400 by the first ball bearing component RB1 and the second ball bearing component RB2.

[0130] The center point CP of the attraction force acting on the space between the magnet part 510 and the traction yoke part 550 can be located in the support area formed by the contact point connecting the first ball member RB1, the second ball member RB2 and the rotating member 300 (or the base 400), so that the rotating member 300 can be stably driven.

[0131] Furthermore, the dimensions of the first traction yoke 551 and the second traction yoke 552 can be configured to be different from each other, and the center point CP of the attraction force can be positioned close to the first ball member RB1, which serves as the main guide.

[0132] When the attractive force between the first magnet 511 and the first traction yoke 551 is greater than the attractive force between the second magnet 512 and the second traction yoke 552, the center point CP of the attractive force can be located on the side of the first ball bearing member RB1.

[0133] Therefore, in addition to the above examples, by configuring the dimensions of the first magnet 511 and the second magnet 512 to be different from each other, or by configuring the distance between the first magnet 511 and the first traction yoke 551 to be different from the distance between the second magnet 512 and the second traction yoke 552, the center point CP of the attraction force can be positioned on the side of the first ball member RB1.

[0134] Reference Figure 7 The traction yoke portion 550 may also include an auxiliary yoke 553 disposed on one side of the first magnet 511.

[0135] The auxiliary yoke 553 can also be inserted into the base 400 and can be formed of a magnetic material.

[0136] The first magnet 511 can be opposite to the first traction yoke 551 in the optical axis direction (Z-axis direction), and can be opposite to the auxiliary yoke 553 in the direction intersecting the optical axis (Z-axis).

[0137] In other words, the attractive force can act on the first magnet 511 in the direction opposite to the first traction yoke 551 and in the direction opposite to the auxiliary yoke 553.

[0138] The auxiliary yoke 553 can assist the functions of the first traction yoke 551 and the second traction yoke 552.

[0139] The description of the aperture driving section 500 and related components is not limited to the exemplary embodiments described above.

[0140] As described above, the feature of this disclosure may lie in the connection structure between the first spacer 110 and the rotating member 300.

[0141] Figure 10 This is a plan view of an aperture module (without the cover) according to an exemplary embodiment of the present disclosure. Figure 11 It is along Figure 10 The cross-sectional view taken from line I-I'.

[0142] The first spacer 110 may be an annular member having an inner diameter and an outer diameter. The outer diameter of the first spacer 110 may determine the size of the first spacer 110, and the inner diameter of the first spacer 110 may define the through hole 111.

[0143] The first spacer 110 can overlap with the blade 200 in the region between the outer diameter and the inner diameter.

[0144] The first spacer 110 may include a plurality of connecting holes. The plurality of connecting holes may be provided at positions spaced apart from each other along the circumferential direction of the first spacer 110, and may be formed at positions corresponding to the positions of the guide protrusions 310.

[0145] The number of multiple connecting holes may correspond to the number of guide protrusions 310, or may be less than the number of guide protrusions 310.

[0146] According to exemplary embodiments of the present disclosure, the number of connecting holes included in the first spacer 110 may correspond to the number of guide protrusions 310. For example, the rotator 300 may include six guide protrusions 310, and the first spacer 110 may include six connecting holes.

[0147] The first spacer 110 may include connecting holes of different sizes. For example, the first spacer 110 may include a first connecting hole 113, a second connecting hole 114, and a third connecting hole 115 with different diameters.

[0148] Reference Figure 10 The diameter of the first connecting hole 113 (the first diameter) can be approximately equal to the diameter of the guide protrusion 310. Therefore, the guide protrusion 310 can be fitted into the first connecting hole 113. Multiple first connecting holes 113 can be provided.

[0149] The diameter of the second connecting hole 114 (the second diameter) can be smaller than the diameter of the guide protrusion 310. Therefore, the guide protrusion 310 does not need to pass through the second connecting hole 114. Multiple second connecting holes 114 can be provided.

[0150] Reference Figure 11 The first spacer 110 may include an extension 112 extending to the upper side of the guide protrusion 310, and thus may be positioned on the guide protrusion 310.

[0151] The extension 112 may define a second connecting hole 114. The extension 112 may be configured to overlap with the guide protrusion 310 in the optical axis direction (Z-axis direction). Therefore, the diameter of the second connecting hole 114 defined by the extension 112 may be smaller than the diameter of the guide protrusion 310.

[0152] The extension 112 may contact the guide protrusion 310. For example, the lower surface of the extension 112 may contact the upper surface of the guide protrusion 310.

[0153] An adhesive (not shown) may be applied to the space between the extension 112 and the guide protrusion 310.

[0154] At the location where the second connecting hole 114 is formed, the first spacer 110 and the guide protrusion 310 may have a certain distance in a direction perpendicular to the optical axis (Z-axis). A partition space 117 may be formed along the outer circumference of the guide protrusion 310 between the guide protrusion 310 and the first spacer 110. The aforementioned distance corresponds to this partition space 117.

[0155] The adhesive applied in the space between the extension 112 and the guide protrusion 310 can be contained in the partition space 117. The partition space 117 can prevent the adhesive from overflowing.

[0156] The diameter of the third connecting hole 115 (the third diameter) can be larger than the diameter of the guide protrusion 310. Therefore, the guide protrusion 310 can pass through the third connecting hole 115, and in a direction perpendicular to the optical axis (Z-axis), a certain distance can be formed between the guide protrusion 310 and the first spacer 110 at the edge of the third connecting hole 115. The third connecting hole 115 can be configured as one or more third connecting holes 115.

[0157] According to an exemplary embodiment, among the connecting holes provided in the first spacer 110, the third connecting hole 115 may have the largest diameter, and the second connecting hole 114 may have the smallest diameter. Furthermore, among the connecting holes provided in the first spacer 110, the second connecting holes 114 may be provided in the largest number, and the third connecting holes 115 may be provided in the smallest number.

[0158] For example, the first spacer 110 may include three second connecting holes 114, two first connecting holes 113, and one third connecting hole 115. The second connecting holes 114 may be spaced apart from each other, and the first connecting holes 113 and the third connecting hole 115 may be located between the second connecting holes 114.

[0159] According to an exemplary embodiment of this disclosure, the first connecting hole 113 of the first spacer 110 can precisely engage with the guide protrusion 310 to limit the movement of the first spacer 110 in a direction perpendicular to the optical axis (Z-axis). The second connecting hole 114 of the first spacer 110 can overlap with the guide protrusion 310 in the optical axis direction (Z-axis direction) to limit the movement of the first spacer 110 in the optical axis direction (Z-axis direction). The third connecting hole 115 of the first spacer 110 can be at a certain distance from the guide protrusion 310 in a direction perpendicular to the optical axis (Z-axis direction) to compensate for the assembly tolerance between the first spacer 110 and the rotating member 300.

[0160] In the optical axis direction (Z-axis direction), a distance D can be formed between the first spacer 110 and the cover 100, and this distance D can be less than the thickness T of each blade in the upper blade group 200-1 and the lower blade group 200-2.

[0161] For example, when the surface of the first spacer 110 facing the cover 100 includes a stepped portion, the distance D can refer to the shortest distance between the first spacer 110 and the cover 100. Furthermore, the thickness T of the blade 200 can refer to the thickness of the blade 200 in the optical axis direction (Z-axis direction).

[0162] According to an exemplary embodiment, even when the first spacer 110 separates from the guide protrusion 310, the distance formed between the first spacer 110 and the guide protrusion 310 due to the separation of the first spacer 110 and the guide protrusion 310 can still be less than the thickness T of the blade 200 itself, so that the blade 200 does not detach from the guide protrusion 310.

[0163] When the first spacer 110 and the guide protrusion 310 are separated, the distance between the first spacer 110 and the guide protrusion 310 in the optical axis direction (Z-axis direction) can be approximately equal to the distance D between the first spacer 110 and the cover 100 in the optical axis direction (Z-axis direction) when the first spacer 110 is placed on the guide protrusion 310.

[0164] Figure 12 This is a plan view of an aperture module (without the cover) according to another exemplary embodiment of the present disclosure. Figure 13 It is along Figure 12 The cross-sectional view taken from line II-II'.

[0165] Reference Figure 12 The number of connecting holes included in the first spacer 110 may be less than the number of guide protrusions 310.

[0166] According to the exemplary embodiments described above, the first spacer 110 may include a first connecting hole 113 and a third connecting hole 115, wherein the diameter of the first connecting hole 113 is substantially equal to the diameter of the guide protrusion 310, and the diameter of the third connecting hole 115 is larger than the diameter of the guide protrusion 310. For example, the first spacer 110 may include two first connecting holes 113 and one third connecting hole 115, and these connecting holes may be formed at positions corresponding to the positions of the guide protrusion 310.

[0167] According to another exemplary embodiment of the present disclosure, the first spacer 110 may include an extension 112' located at the position where the second connection hole 114 is disposed according to the above exemplary embodiment.

[0168] In another exemplary embodiment, the extension portion 112' may be formed to cover the entire guide protrusion 310.

[0169] Adhesive 130 can be applied to the space between the extension 112' and the guide protrusion 310.

[0170] Reference Figure 13 The lower surface of the extension 112' opposite to the guide protrusion 310 in the optical axis direction (Z-axis direction) may include a connecting protrusion 112a protruding toward the guide protrusion 310. The upper surface of the guide protrusion 310 opposite to the extension 112' in the optical axis (Z-axis direction) may include a connecting groove 310a. The connecting protrusion 112a may be accommodated in the connecting groove 310a.

[0171] The width and depth of the connecting groove 310a can be greater than the width and height of the connecting protrusion 112a, respectively. Therefore, when the connecting protrusion 112a is accommodated in the connecting groove 310a, a separation space can be formed between the connecting groove 310a and the connecting protrusion 112a in the optical axis direction (Z-axis direction) and in the direction perpendicular to the optical axis (Z-axis).

[0172] The adhesive 130 used to connect the first spacer 110 and the rotating member 300 to each other can be disposed in the partition space. For example, after the adhesive 130 is applied to the connecting groove 310a, the connecting protrusion 112a can be positioned in the connecting groove 310a and can be heat-cured.

[0173] Compared to the connecting protrusion 112a, the connecting groove 310a can have a relatively sufficient width and depth so that the adhesive 130 does not overflow into its surroundings.

[0174] In the modified example, the position of the connecting protrusion 112a and the position of the connecting groove 310a can be interchanged.

[0175] Reference Figure 14The lower surface of the extension 112' opposite the guide protrusion 310 in the optical axis direction (Z-axis direction) may include a connecting groove 112'a. The guide protrusion 310 may be accommodated in the connecting groove 112'a.

[0176] The partition space 117' can be formed between the connecting groove 112'a and the guide protrusion 310, and an adhesive can be applied to the partition space 117'.

[0177] According to this disclosure, the risk of component detachment can be reduced or eliminated.

[0178] While specific examples have been shown and described above, it will be apparent upon understanding this disclosure that various changes in form and detail may be made to these examples without departing from the spirit and scope of the claims and their equivalents. The examples described herein are to be understood in a descriptive sense only and not for limiting purposes. The description of features or aspects in each example should be considered applicable to similar features or aspects in other examples. Suitable results may still be achieved if the described techniques are performed in a different order, and / or if components in the described system, architecture, device, or circuit are combined in different ways and / or replaced or supplemented by other components or their equivalents. Therefore, the scope of this disclosure is not limited by the specific embodiments but by the claims and their equivalents, and all variations within the scope of the claims and their equivalents should be understood to be included in this disclosure.

Claims

1. Aperture module, including: Base; A rotating component is disposed on one side of the base; Multiple blades are arranged on one side of the rotating component and define the entrance aperture; as well as A first spacer is disposed on one side of the plurality of blades and connected to the rotating member. The rotating component includes multiple guide protrusions, and the multiple blades are respectively connected to the multiple guide protrusions. The first spacer overlaps with a portion of the plurality of guide protrusions in the optical axis direction.

2. The aperture module according to claim 1, wherein, The first spacer includes a plurality of connecting holes formed at positions corresponding to the plurality of guide protrusions.

3. The aperture module according to claim 2, wherein, The number of the plurality of connecting holes corresponds to the number of the plurality of guide protrusions, or is less than the number of the plurality of guide protrusions.

4. The aperture module according to claim 2, wherein, The plurality of connection holes include: A first connecting hole having a first diameter; and The second connecting hole has a second diameter, and The second diameter is larger than the first diameter and larger than the diameter of each of the plurality of guide protrusions.

5. The aperture module according to claim 4, wherein, The first spacer includes an extension extending from the first spacer to one side of the guide protrusion, and The extended portion overlaps with a portion of the guide protrusion in the direction of the optical axis.

6. The aperture module according to claim 5, wherein, The plurality of connecting holes further includes: a third connecting hole, defined by the extension portion and having a third diameter, and The third diameter is smaller than the first diameter and smaller than the diameter of each of the plurality of guide protrusions.

7. The aperture module according to claim 6, wherein, Among the first connecting hole, the second connecting hole, and the third connecting hole, the third connecting hole is provided in the largest number, and the second connecting hole is provided in the smallest number.

8. The aperture module according to claim 5, wherein, The extension portion is formed to completely cover the guide protrusion.

9. The aperture module according to claim 1, further comprising: The cover is disposed on one side of the first spacer. Wherein, the distance between the cover and the first spacer in the optical axis direction is less than the thickness of each of the plurality of blades in the optical axis direction.

10. The aperture module according to claim 1, wherein, The plurality of blades includes an upper blade group and a lower blade group arranged at different heights along the optical axis, and The first spacer is disposed on one side of the upper blade assembly.

11. The aperture module according to claim 10, further comprising: The second spacer is disposed between the lower blade assembly and the rotating component.

12. The aperture module according to claim 1, wherein, The plurality of blades are respectively connected to the base and the rotating component. The rotating component is configured to rotate about an optical axis relative to the base, and The plurality of blades are configured to adjust the size of the incident aperture in response to rotation of the rotating member.

13. Aperture module, including: Base; A rotating component, supported by the base and configured to rotate relative to the base; Multiple blades are respectively connected to the base and the rotating component; as well as A first spacer is connected to the rotating member and configured to overlap with the plurality of blades. The rotating component includes multiple guide protrusions, and the multiple blades and the first spacer are connected to the multiple guide protrusions. The first spacer includes a plurality of connecting holes, which are formed at positions corresponding to the plurality of guide protrusions and have different diameters.

14. The aperture module according to claim 13, wherein, The number of the plurality of connecting holes corresponds to the number of the plurality of guide protrusions, or is less than the number of the plurality of guide protrusions.

15. The aperture module according to claim 13, wherein, The plurality of connection holes include: The first connecting hole has a first diameter; A second connecting hole having a second diameter; and The third connecting hole has a third diameter. Wherein, the second diameter is larger than the first diameter and larger than the diameter of each of the plurality of guide protrusions, and The third diameter is smaller than the first diameter and smaller than the diameter of each of the plurality of guide protrusions.

16. A camera module, including: The aperture module according to any one of claims 1 to 15; as well as The actuator includes a lens module and is configured to move in at least one direction, either the optical axis direction or a direction perpendicular to the optical axis.

17. The camera module according to claim 16, wherein, The aperture module is connected to the actuator and configured to move together with the actuator.

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