Aperture module and camera module

Abstract

The utility model relates to an aperture module and a camera module. The aperture module includes: a base; a plurality of blades rotatably disposed on the base and forming an incidence hole; and a moving portion configured to move relative to the base, in which the moving portion includes a first moving frame and a second moving frame configured to move toward or away from each other, and a rotation shaft of each of the plurality of blades moves together with the first moving frame and the second moving frame.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority from Korean Patent Application No. 10-2023-0165174 filed on November 24, 2023, and Korean Patent Application No. 10-2024-0038723 filed on March 20, 2024, in the Korean Intellectual Property Office, the disclosures of which are incorporated herein by reference in their entirety for all purposes. Technical Field

[0003] The present disclosure relates to an aperture module and a camera module including the aperture module. Background Art

[0004] In recent years, an aperture module for controlling the amount of incident light has been applied to mobile camera modules. The aperture module forms an incident hole through which light passes through a plurality of blades, and changes the size of the incident hole by moving the plurality of blades.

[0005] In addition, in recent years, camera modules that bend the path of light using a reflective module (hereinafter referred to as "folded camera modules") have been adopted for use in mobile devices. In the case of folded camera modules, the diameter of the lens module provided in front of the image sensor is a factor that affects the thickness of the mobile device.

[0006] In addition, by applying the aperture module to the folding camera module, the configuration of the multiple blades forming the incident hole and the driving part that moves the multiple blades may also be factors affecting the thickness of the mobile device.

[0007] Therefore, in the case of a folding camera module, it is difficult to apply an aperture module due to limited space. 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 one general aspect, an aperture module includes: a base; a plurality of blades rotatably disposed on the base and forming an entrance aperture; and a moving portion configured to move relative to the base, wherein the moving portion includes a first moving frame and a second moving frame configured to move toward or away from each other, and a rotation axis of each of the plurality of blades moves together with the first moving frame and the second moving frame.

[0010] Rotation shafts of a portion of the plurality of blades may be provided on the first moving frame, and rotation shafts of the remaining portion of the plurality of blades may be provided on the second moving frame.

[0011] The first moving frame may include a first moving pin, the second moving frame may include a second moving pin, and the first moving pin and the second moving pin may form a rotation axis of each of the plurality of blades.

[0012] The first moving pin of the first moving frame and the second moving pin of the second moving frame may be disposed at respective positions that do not overlap with the incident aperture in a direction perpendicular to the moving direction of the moving portion.

[0013] The first moving pin of the first moving frame and the second moving pin of the second moving frame may be arranged at respective positions so as not to overlap with the incident hole in the moving direction of the moving part.

[0014] The first moving pin of the first moving frame and the second moving pin of the second moving frame may be disposed at respective positions spaced apart from each other in a moving direction of the moving part.

[0015] Each of the plurality of blades may include a rotation hole in which a corresponding one of the first moving pin and the second moving pin is disposed.

[0016] The base may include a fixing pin, and each of the plurality of blades may include a guide hole in which the fixing pin is disposed.

[0017] A distance between any one of the first moving pin and the second moving pin and the incident hole may be smaller than a distance between the guide hole and the incident hole.

[0018] The guide hole may have a curved shape.

[0019] The base may include a fixing pin, the plurality of blades may be an even number of blades, half of the even number of blades may be connected to the first moving pin of the first moving frame, the remaining half of the even number of blades may be connected to the second moving pin of the second moving frame, and each of the plurality of blades may include a guide hole in which the fixing pin is set.

[0020] The plurality of blades may include a first blade, a second blade, a third blade and a fourth blade, the first moving frame may include two first moving pins spaced apart from each other in a direction perpendicular to the moving direction of the first moving frame, the second moving frame may include two second moving pins spaced apart from each other in a direction perpendicular to the moving direction of the second moving frame, the two first moving pins may form a rotation axis of the first blade and a rotation axis of the second blade, and the two second moving pins may form a rotation axis of the third blade and a rotation axis of the fourth blade.

[0021] The aperture module may further include: a first driving part, including a first magnet arranged on a first moving frame or base and a first coil arranged to face the first magnet; and a second driving part, including a second magnet arranged on a second moving frame or base and a second coil arranged to face the second magnet.

[0022] The aperture module may further include: a first ball member disposed between the first moving frame and the base; a second ball member disposed between the second moving frame and the base; and a pulling yoke portion including a first pulling yoke facing the first magnet and a second pulling yoke facing the second magnet.

[0023] The plurality of blades may be configured to change a size of the entrance aperture as the plurality of blades rotate, and at a maximum size of the entrance aperture the entrance aperture may have an octagonal shape and at a minimum size of the entrance aperture the entrance aperture may have a hexagonal shape.

[0024] In another general aspect, a camera module includes: a lens module including a plurality of lenses; a reflection module arranged in front of or behind the lens module in an optical axis direction and including a reflection member configured to change a path of light; and an aperture module arranged between the lens module and the reflection module and including: a base; a plurality of blades rotatably arranged on the base and forming an incident aperture; and a first moving frame and a second moving frame configured to move relative to the base and toward or away from each other, wherein the first moving frame includes at least one first moving pin configured to move together with the first moving frame, the second moving frame includes at least one second moving pin configured to move together with the second moving frame, the at least one first moving pin forms a rotation axis for a portion of the plurality of blades, and the at least one second moving pin forms a rotation axis for the remaining portion of the plurality of blades.

[0025] The first moving pin and the second moving pin can be spaced apart from each other in the moving direction of the first moving frame and the moving direction of the second moving frame, and are arranged at corresponding positions that do not overlap with the incident hole in a direction perpendicular to both the moving direction of the first moving frame and the moving direction of the second moving frame.

[0026] Each of the plurality of blades may include a guide hole having a curved shape, the base may include a fixing pin inserted into the guide hole of each of the plurality of blades, and the first and second moving pins may be disposed closer to the incident hole than the fixing pin.

[0027] In another general aspect, an aperture module includes: a base; a plurality of blades rotatably disposed on the base and forming an entrance aperture; and a plurality of moving pins forming rotation axes of the plurality of blades and configured to move linearly relative to the base to rotate the plurality of blades, thereby changing a size of the entrance aperture.

[0028] The base may include a plurality of fixing pins, each of the plurality of blades may include a rotation hole in which one of the plurality of moving pins is disposed, and each of the plurality of blades may further include a guide hole in which one of the fixing pins is disposed.

[0029] The diameter of the rotating holes of the multiple blades can be substantially equal to the diameter of the multiple moving pins, the width of the guide holes of the multiple blades can be substantially equal to the diameter of the multiple fixing pins, and the length of the guide holes of the multiple blades can be greater than the diameter of the multiple fixing pins, so that when the multiple blades rotate to change the size of the incident hole, the multiple fixing pins can slide in the guide holes of the multiple blades.

[0030] The aperture module may further include a first moving frame and a second moving frame, which are configured to move in a straight line relative to the base and toward or away from each other, a portion of the plurality of moving pins may be set on the first moving frame, and the rest of the plurality of moving pins may be set on the second moving frame.

[0031] In another general aspect, an aperture module includes: a base; a plurality of blades rotatably disposed on the base and forming an entrance aperture; and a plurality of moving pins forming a rotation axis of the plurality of blades and configured to move relative to the base to rotate the plurality of blades, thereby changing a size of the entrance aperture, wherein a portion of the plurality of moving pins is disposed on one side of the entrance aperture in a moving direction of the plurality of moving pins, and a remaining portion of the plurality of moving pins is disposed on an opposite side of the entrance aperture in the moving direction of the plurality of moving pins.

[0032] The base may include a plurality of fixing pins, each of the plurality of blades may include a rotation hole in which one of the plurality of moving pins is disposed, and each of the plurality of blades may further include a guide hole in which one of the plurality of fixing pins is disposed.

[0033] The multiple blades may include a first blade, a second blade, a third blade and a fourth blade, the multiple moving pins may include two first moving pins and two second moving pins, the two first moving pins are arranged on one side of the incident hole in the moving direction of the multiple moving pins, and the two second moving pins are arranged on the opposite side of the incident hole in the moving direction of the multiple moving pins, the first of the two first moving pins may form the rotation axis of the first blade, the second of the two first moving pins may form the rotation axis of the second blade, the first of the two second moving pins may form the rotation axis of the third blade, and the second of the two second moving pins may form the rotation axis of the fourth blade, the two first moving pins may be spaced apart from each other in a direction perpendicular to the moving direction of the multiple moving pins, the two second moving pins may be spaced apart from each other in a direction perpendicular to the moving direction of the multiple moving pins, and the two first moving pins and the two second moving pins may not overlap with the incident hole in the moving direction of the multiple moving pins.

[0034] The multiple blades may include a first blade, a second blade, a third blade and a fourth blade, the multiple moving pins may include a first moving pin and a second moving pin, the first moving pin is arranged on one side of the incident hole in the moving direction of the multiple moving pins, and the second moving pin is arranged on the opposite side of the incident hole in the moving direction of the multiple moving pins, the first moving pin may form the rotation axis of the first blade and the rotation axis of the second blade, the second moving pin may form the rotation axis of the third blade and the rotation axis of the fourth blade, and the first moving pin and the second moving pin may not overlap with the incident hole in the moving direction of the multiple moving pins.

[0035] Other features and aspects will be apparent from the following detailed description, drawings, and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a perspective view of an aperture module according to an embodiment of the present disclosure.

[0037] Figure 2 It is observed from below Figure 1 A perspective view of the aperture module.

[0038] Figure 3 yes Figure 1 and Figure 2 Exploded perspective view of the aperture module.

[0039] Figure 4 yes Figures 1 to 3 A partially exploded perspective view of the aperture module.

[0040] Figure 5 It is observed from below Figures 1 to 3 A partially exploded perspective view of the aperture module.

[0041] Figure 6 It shows that Figures 1 to 5 A bottom view of the aperture module showing a state in which the entrance aperture is at its maximum size.

[0042] Figure 7 It shows that Figures 1 to 5 A bottom view of the aperture module showing a state in which the entrance aperture has a minimum size.

[0043] Figure 8 is an exploded perspective view of an aperture module according to another embodiment of the present disclosure.

[0044] Figure 9 It shows that Figure 8 A bottom view of the aperture module showing a state in which the entrance aperture is at its maximum size.

[0045] Figure 10 It shows that Figure 8 A bottom view of the aperture module showing a state in which the entrance aperture has a minimum size.

[0046] Figure 11 is a schematic diagram of a camera module according to an embodiment of the present disclosure.

[0047] Figure 12 is a schematic diagram of a camera module according to another embodiment of the present disclosure.

[0048] Throughout the drawings and detailed description, the same reference numerals denote the same elements. For clarity, illustration, and convenience, the drawings may not be drawn to scale, and the relative sizes, proportions, and depictions of elements in the drawings may be exaggerated. DETAILED DESCRIPTION

[0049] The following specific embodiments are provided to help the reader obtain a comprehensive understanding of the methods, devices and / or systems described herein. However, after understanding the disclosure of the present application, various changes, modifications and equivalents of the methods, devices and / or systems described herein will be apparent. For example, the order of operations described herein is merely an example and is not limited to the order set forth herein, but may be changed as will be apparent after understanding the disclosure of the present application, except for operations that must occur in a certain order. In addition, for the sake of clarity and brevity, descriptions of features known in the art may be omitted.

[0050] The features described herein may be implemented in different forms and are not to be construed as limited to the examples described herein. Rather, the examples described herein are provided merely to illustrate some of the many possible ways to implement the methods, devices, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0051] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being “on,” “connected to,” or “coupled to” another element, it may be directly “on,” directly “connected to,” or directly “coupled to” the other element, or one or more other elements may be present between them. In contrast, when an element is described as being “directly on,” “directly connected to,” or “directly coupled to” another element, there are no other elements present between them.

[0052] 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.

[0053] Although terms such as "first," "second," and "third" may be used herein to describe various members, components, regions, layers, or portions, these members, components, regions, layers, or portions are not limited by these terms. Instead, these terms are used solely to distinguish one member, component, region, layer, or portion from another member, component, region, layer, or portion. Thus, a first member, first component, first region, first layer, or first portion mentioned in the examples described herein may also be referred to as a second member, second component, second region, second layer, or second portion without departing from the teachings of the examples.

[0054] For ease of description, spatially relative terms such as "above," "upper," "below," and "lower" may be used herein to describe the relationship of one element to another element as shown in the accompanying drawings. In addition to the orientation depicted in the accompanying drawings, such spatially relative terms are intended to also include different orientations of the device in use or operation. For example, if the device in the accompanying drawings is turned over, an element described as being "above" or "upper" relative to another element will then be "below" or "lower" relative to the other element. Therefore, the term "above" includes both the orientations of above and below, depending on the spatial orientation of the device. The device may also be oriented in other ways (e.g., rotated 90 degrees or in other orientations), and the spatially relative terms used herein will be interpreted accordingly.

[0055] The terms used herein are only used to describe various examples and are not intended to limit the present disclosure. The terms "a", "an", and "the" are intended to include plural forms as well, unless the context clearly indicates otherwise. The terms "include", "comprising", and "having" specify the presence of 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.

[0056] The camera module according to the embodiment of the present disclosure may be installed in a portable electronic device. The portable electronic device may include a mobile communication terminal, a smart phone, a tablet computer, or other portable electronic devices.

[0057] In this specification, the optical axis (Z-axis) direction may refer to a direction in which light is incident on the aperture module.

[0058] In addition, the first axis (X-axis) direction and the second axis (Y-axis) direction are examples of two directions perpendicular to the optical axis (Z-axis) and intersecting with each other. In this specification, the first axis (X-axis) direction and the second axis (Y-axis) direction can be understood as two directions perpendicular to the optical axis (Z-axis) and intersecting with each other.

[0059] Figure 1 is a perspective view of an aperture module according to an embodiment of the present disclosure. Figure 2 It is observed from below Figure 1 A perspective view of the aperture module. Figure 3 yes Figure 1 and Figure 2 Exploded perspective view of the aperture module. Figure 4 yes Figures 1 to 3 A partially exploded perspective view of the aperture module. Figure 5 It is observed from below Figures 1 to 3 A partially exploded perspective view of the aperture module. Figure 6 It shows that Figures 1 to 5 A bottom view of the aperture module showing a state in which the entrance aperture is at its maximum size. Figure 7 It shows that Figures 1 to 5 A bottom view of the aperture module showing a state in which the entrance aperture has a minimum size.

[0060] See also Figures 1 to 7 , the aperture module 10 according to an embodiment of the present disclosure includes a base 100 , a plurality of blades 300 , and a moving part 200 .

[0061] The base 100 may have a rectangular plate shape having an incident hole 130 at the center. The incident hole 130 may have an octagonal shape.

[0062] The moving part 200 may be configured to be movable relative to the base 100. The moving part 200 may include a plurality of movable frames, and the plurality of movable frames may be spaced apart from one surface of the base 100. The moving part 200 may be movable relative to the base 100 in a first axis (X axis) direction.

[0063] The plurality of moving frames may include a first moving frame 210 and a second moving frame 230 .

[0064] The first moving frame 210 and the second moving frame 230 can move in a straight line relative to the base 100 and move toward or away from each other. For example, the first moving frame 210 and the second moving frame 230 can move toward or away from each other in the first axis (X axis) direction.

[0065] The plurality of blades 300 may be each rotatably provided on the base 100. The plurality of blades 300 may be provided on the other surface of the base 100 (a surface opposite to the one surface of the base 100).

[0066] The plurality of blades 300 may form the incident aperture 130. The plurality of blades 300 may include an even number of blades. In an embodiment, the plurality of blades 300 may include a first blade 310, a second blade 320, a third blade 330, and a fourth blade 340. In this embodiment, a total of four blades may be provided, but the number of the plurality of blades 300 is not limited thereto.

[0067] The entrance aperture 130 may be defined by surfaces of the plurality of blades 300 that face the optical axis (Z-axis) (or the center of the entrance aperture 130). The position of each of the plurality of blades 300 may be changed by the driving unit 400. Thus, the size of the entrance aperture 130 may vary depending on the position of each of the plurality of blades 300. For example, as each of the plurality of blades 300 rotates, the size of the entrance aperture 130 may decrease or increase.

[0068] like Figure 6 As shown in FIG, at its maximum dimension, the entrance aperture 130 may have an octagonal shape, and as shown in FIG. Figure 7 As shown in , at its smallest dimension, the entrance aperture 130 may have a hexagonal shape.

[0069] The plurality of blades 300 are each connected to the base 100 and the moving part 200 .

[0070] For example, the base 100 may include a plurality of fixing pins 110. The plurality of fixing pins 110 may protrude from the other surface of the base 100. The plurality of blades 300 may be respectively connected to the plurality of fixing pins 110 of the base 100. For example, the first blade 310, the second blade 320, the third blade 330, and the fourth blade 340 may be respectively connected to the plurality of fixing pins 110 of the base 100.

[0071] The number of the plurality of fixing pins 110 of the base 100 may be equal to the number of the plurality of blades 300. For example, when the aperture module 10 includes four blades, the base 100 may have four fixing pins 110. In an embodiment, the base 100 may include a first fixing pin, a second fixing pin, a third fixing pin, and a fourth fixing pin.

[0072] The first blade 310 may be connected to the first fixing pin of the base 100 , the second blade 320 may be connected to the second fixing pin of the base 100 , the third blade 330 may be connected to the third fixing pin of the base 100 , and the fourth blade 340 may be connected to the fourth fixing pin of the base 100 .

[0073] The moving part 200 may include a moving pin 211 and a moving pin 231. The moving pins 211 and 231 may protrude from one surface of the moving part 200 (the surface facing the one surface of the base 100). The moving pins 211 and 231 of the moving part 200 may form a rotation axis of the plurality of blades 300, so that the rotation axis of each blade can move together with the moving part 200. The plurality of blades 300 may be connected to the moving pins 211 and 231, respectively. For example, the first blade 310, the second blade 320, the third blade 330, and the fourth blade 340 may be connected to the moving pins 211 and 231 of the moving part 200, respectively.

[0074] The first moving frame 210 and the second moving frame 230 each include a moving pin. In an embodiment, the first moving frame 210 may include one or more first moving pins 211 , and the second moving frame 230 may include one or more second moving pins 231 .

[0075] The first moving pins 211 of the first moving frame 210 may form a rotation axis for a portion of the plurality of blades 300. The second moving pins 231 of the second moving frame 230 may form a rotation axis for the remaining portion of the plurality of blades 300. For example, half of the plurality of blades 300 may be connected to the first moving pins 211 of the first moving frame 210, and the other half of the plurality of blades 300 may be connected to the second moving pins 231 of the second moving frame 230.

[0076] In an embodiment, the first moving frame 210 may include two first moving pins 211. The first blade 310 may be connected to one of the two first moving pins 211, and the second blade 320 may be connected to the other of the two first moving pins 211. The second moving frame 230 may include two second moving pins 231. The third blade 330 may be connected to one of the two second moving pins 231, and the fourth blade 340 may be connected to the other of the two second moving pins 231.

[0077] The two first moving pins 211 may be spaced apart from each other on the first moving frame 210 in a direction (second axis (Y axis) direction) perpendicular to the moving direction (first axis (X axis) direction) of the moving part 200, and the two second moving pins 231 may be spaced apart from each other on the second moving frame 230 in a direction (second axis (Y axis) direction) perpendicular to the moving direction (first axis (X axis) direction) of the moving part 200. The two first moving pins 211 and the two second moving pins 231 may be spaced apart from each other in the moving direction (first axis (X axis) direction) of the moving part 200.

[0078] A through hole 170 penetrating the base 100 may be formed in the base 100 , and two first moving pins 211 and two second moving pins 231 of the moving part 200 may pass through corresponding ones of the through holes 170 and protrude from the other surface of the base 100 .

[0079] The through hole 170 may also be provided at a more outer position in the second axis (Y-axis) direction than a guide groove 150 of the base 100 to be described later.

[0080] A plurality of blades 300 may be provided on the other surface of the base 100. Each of the plurality of blades 300 may be connected to a corresponding one of the fixing pins 110 on the other surface of the base 100 and a corresponding one of the moving pins 211 and 231 of the moving part 200 protruding from the other surface of the base 100, respectively.

[0081] Since each of the plurality of blades 300 may be connected to the base 100 and the moving part 200 in the same manner, connection of one of the plurality of blades 300 will be described below.

[0082] The first blade 310 may include a rotation hole 311. The rotation hole 311 may be a hole that penetrates the first blade 310. The first moving pin 211 of the first moving frame 210 may be disposed in the rotation hole 311. The first moving pin 211 may have a cylindrical shape. The diameter of the first moving pin 211 may be substantially equal to the diameter of the rotation hole 311.

[0083] When the first moving pin 211 moves together with the first moving frame 210, the first blade 310 can rotate using the first moving pin 211 as a rotation axis. In an embodiment, the first moving pin 211, which forms the rotation axis of the first blade 310, can be a moving member that moves linearly relative to the base 100. Therefore, as the first moving frame 210 moves, the first blade 310 can move together with the first moving frame 210.

[0084] The first blade 310 may include a guide hole 312. The guide hole 312 may be a hole that penetrates the first blade 310. The guide hole 312 may be provided at a position spaced apart from the rotation hole 311. The fixing pin 110 of the base 100 may be provided in the guide hole 312. The fixing pin 110 may have a cylindrical shape. The size of the guide hole 312 may be larger than the size of the fixing pin 110. For example, the width of the guide hole 312 may be substantially equal to the diameter of the fixing pin 110, and the length of the guide hole 312 may be larger than the diameter of the fixing pin 110, so that when the first blade 310 rotates to change the size of the incident aperture 130, the fixing pin 110 can slide in the guide hole 312 of the first blade 310. In addition, the guide hole 312 may have a curved shape.

[0085] The shape of the guide hole 312 is not limited to the shape shown in the drawings. For example, the shape of the guide hole 312 may be changed as long as it allows the first blade 310 to rotate in conjunction with the movement of the moving part 200.

[0086] As the first moving frame 210 and the first moving pin 211 move, the guide hole 312 of the first blade 310 may move while being guided by the first fixing pin of the base 100. Therefore, the first blade 310 may move while rotating around the first moving pin 211 as a rotation axis.

[0087] The first moving pin 211 may be disposed closer to the incident hole 130 than the fixing pin 110 .

[0088] The first moving pin 211 and the second moving pin 231 may be disposed at positions that do not overlap with the incident hole 130 in a direction perpendicular to the moving direction of the moving part 200 .

[0089] In addition, the first moving pin 211 and the second moving pin 231 may be disposed at positions that do not overlap with the incident hole 130 in the moving direction of the moving part 200 .

[0090] The aperture module 10 may include a driving unit 400 . The driving unit 400 may include a first driving part 410 and a second driving part 430 .

[0091] See also Figures 3 to 5 The first driving portion 410 may include a first magnet 411 and a first coil 413. The first magnet 411 and the first coil 413 may be disposed to face each other in the optical axis (Z axis) direction. The optical axis (Z axis) direction may be the direction in which light is incident on the incident hole 130.

[0092] The first magnet 411 may be provided on one of the base 100 and the moving part 200, and the first coil 413 may be provided on the other of the base 100 and the moving part 200. Hereinafter, a description will be given based on an embodiment in which the first magnet 411 may be provided on the first moving frame 210 and the first coil 413 may be provided on the base 100.

[0093] The first magnet 411 may be disposed on the first moving frame 210 , and the first coil 413 may be disposed on the base 100 .

[0094] The first magnet 411 may be magnetized so that one surface (the surface facing the first coil 413) may have both an N pole and an S pole. As an example, on one surface of the first magnet 411 facing the first coil 413, an N pole, a neutral region, and an S pole may be sequentially formed along a direction perpendicular to the optical axis (Z axis) (e.g., the direction of movement of the moving part 200).

[0095] The first coil 413 may be disposed to face the first magnet 411. For example, the first coil 413 may be disposed to face the first magnet 411 in the optical axis (Z-axis) direction.

[0096] The first coil 413 may be provided on a substrate 450, and the substrate 450 may be mounted on the base 100 such that the first magnet 411 and the first coil 413 face each other in the optical axis (Z-axis) direction. As an example, the first coil 413 may be provided on one surface of the substrate 450. The substrate 450 may be mounted on the base 100.

[0097] The first magnet 411 may be a moving member mounted on the moving part 200 and moving together with the moving part 200 , and the first coil 413 may be a fixed member fixed to the base 100 .

[0098] When power is supplied to the first coil 413 , the first moving frame 210 may be moved by electromagnetic force generated between the first magnet 411 and the first coil 413 .

[0099] The second driving part 430 may include a second magnet 431 and a second coil 433. The second magnet 431 and the second coil 433 may be disposed to face each other in the optical axis (Z axis) direction. The optical axis (Z axis) direction may be the direction in which light is incident on the incident hole 130.

[0100] The second magnet 431 may be provided on one of the base 100 and the moving part 200, and the second coil 433 may be provided on the other of the base 100 and the moving part 200. Hereinafter, a description will be given based on an embodiment in which the second magnet 431 is provided on the second moving frame 230 and the second coil 433 is provided on the base 100.

[0101] The second magnet 431 may be disposed on the second moving frame 230 , and the second coil 433 may be disposed on the base 100 .

[0102] The second magnet 431 may be magnetized so that one surface (the surface facing the second coil 433) may have both an N pole and an S pole. As an example, on one surface of the second magnet 431 facing the second coil 433, an N pole, a neutral region, and an S pole may be sequentially formed along a direction perpendicular to the optical axis (Z axis) (e.g., the direction of movement of the moving part 200).

[0103] The second coil 433 may be disposed to face the second magnet 431. For example, the second coil 433 may be disposed to face the second magnet 431 in the optical axis (Z-axis) direction.

[0104] The second coil 433 may be provided on a substrate 450, and the substrate 450 may be mounted on the base 100 such that the second magnet 431 and the second coil 433 face each other in the optical axis (Z-axis) direction. As an example, the second coil 433 may be provided on one surface of the substrate 450. The substrate 450 may be mounted on the base 100.

[0105] The second magnet 431 may be a moving member mounted on the moving part 200 and moving together with the moving part 200 , and the second coil 433 may be a fixed member fixed to the base 100 .

[0106] When power is supplied to the second coil 433 , the second moving frame 230 may be moved by electromagnetic force generated between the second magnet 431 and the second coil 433 .

[0107] The first magnet 411 and the second magnet 431 may be spaced apart in a direction perpendicular to the optical axis (Z axis) (e.g., the moving direction of the moving part 200). In addition, the first coil 413 and the second coil 433 may be spaced apart in a direction perpendicular to the optical axis (Z axis) (e.g., the moving direction of the moving part 200).

[0108] The first moving frame 210 and the second moving frame 230 may be moved toward or away from each other by the driving unit 400 .

[0109] A plurality of ball members may be provided between the base 100 and the moving part 200 to reduce friction when the moving part 200 moves. The plurality of ball members may include a first ball member 510 and a second ball member 530.

[0110] The first ball member 510 may be disposed between the base 100 and the first moving frame 210, and the second ball member 530 may be disposed between the base 100 and the second moving frame 230. The first ball member 510 and the second ball member 530 each include a plurality of balls. In an embodiment, the first ball member 510 may include three or more balls, and the second ball member 530 may include three or more balls. Figure 3 and Figure 4 An embodiment is shown in which the first ball member 510 and the second ball member 530 each include four balls.

[0111] The guide grooves may be formed in surfaces facing each other of the base 100 and the moving part 200. For example, the guide groove 150 may be formed in one surface of the base 100, the guide grooves 213a and 213b may be formed in one surface of the first moving frame 210, and the guide grooves 233a and 233b may be formed in one surface of the second moving frame 230.

[0112] The guide groove 150 of the base 100 and the guide grooves 213 a , 213 b , 233 a , and 233 b of the moving portion 200 may face each other in the optical axis (Z-axis) direction.

[0113] A plurality of ball members are provided between the guide groove 150 of the base 100 and the guide grooves 213a, 213b, 233a, and 233b of the moving part 200. Each guide groove 150 may have a shape having a length in the moving direction of the moving part 200. When the moving part 200 moves, the plurality of ball members may roll.

[0114] The first moving frame 210 may include a plurality of guide grooves 213a and 213b spaced apart in the direction of the second axis (Y axis). Among the plurality of guide grooves 213a and 213b, the guide groove 213a arranged along the positive direction (+Y axis direction) of the second axis (Y axis) may make two-point contact with two of the plurality of balls of the first ball member 510. Among the plurality of guide grooves 213a and 213b, the guide groove 213b arranged along the negative direction (-Y axis direction) of the second axis (Y axis) may make single-point contact with the remaining two of the plurality of balls of the first ball member 510. In addition, each of the plurality of balls of the first ball member 510 may make two-point contact with a corresponding one of the guide grooves 150 of the base 100.

[0115] In another embodiment, four guide grooves 150 may be formed in the first moving frame 210 , and a plurality of guide grooves 213 a and 213 b may be formed in the base 100 .

[0116] The second moving frame 230 may include a plurality of guide grooves 233a and 233b spaced apart in the direction of the second axis (Y axis). Among the plurality of guide grooves 233a and 233b, the guide groove 233a arranged along the positive direction (+Y axis direction) of the second axis (Y axis) may make single-point contact with two of the plurality of balls of the second ball member 530. Among the plurality of guide grooves 233a and 233b, the guide groove 233b arranged along the negative direction (-Y axis direction) of the second axis (Y axis) may make two-point contact with the remaining two of the plurality of balls of the second ball member 530. In addition, the plurality of balls of the second ball member 530 may each make two-point contact with a corresponding one of the guide grooves 150 of the base 100.

[0117] In another embodiment, four guide grooves 150 may be formed in the second moving frame 230 , and a plurality of guide grooves 233 a and 233 b may be formed in the base 100 .

[0118] In an embodiment, the first magnet 411 may be disposed closer to the guide groove 213a disposed in the positive direction (+Y-axis direction) of the second axis (Y-axis) among the plurality of guide grooves 213a and 213b of the first moving frame 210. In addition, the second magnet 431 may be disposed closer to the guide groove 233b disposed in the negative direction (-Y-axis direction) of the second axis (Y-axis) among the plurality of guide grooves 233a and 233b of the second moving frame 230.

[0119] That is, when viewed from the first axis (X-axis) direction, the center of the first magnet 411 and the center of the second magnet 431 may be spaced apart.

[0120] The pulling yoke portion 600 may be disposed on the base 100. The pulling yoke portion 600 may be disposed at a position facing the first magnet 411 and the second magnet 431 in the optical axis (Z-axis) direction.

[0121] The pulling yoke portion 600 may be disposed on the other surface of the substrate 450 .

[0122] An attractive force may be generated between the pulling yoke portion 600 and the first magnet 411 , and between the pulling yoke portion 600 and the second magnet 431 .

[0123] The pulling yoke portion 600 may include a first pulling yoke 610 and a second pulling yoke 630. The first pulling yoke 610 may face the first magnet 411 in the optical axis (Z axis) direction, and the second pulling yoke 630 may face the second magnet 431 in the optical axis (Z axis) direction. The first pulling yoke 610 and the second pulling yoke 630 may be made of a magnetic material.

[0124] An attractive force may act between the first pulling yoke 610 and the first magnet 411 and between the second pulling yoke 630 and the second magnet 431 in the optical axis (Z-axis) direction.

[0125] Therefore, by the attraction between the first traction yoke 610 and the first magnet 411 and the attraction between the second traction yoke 630 and the second magnet 431, the moving part 200 is pressed in the direction toward the base 100, and the base 100 and the moving part 200 can maintain contact with multiple ball members of the first ball member 510 and the second ball member 530.

[0126] The aperture module 10 can detect the position of the moving part 200. To this end, the aperture module 10 can include a position sensor part. The position sensor part can include a first position sensor 415 and a second position sensor 435.

[0127] The first position sensor 415 may be disposed on the substrate 450 to face the first magnet 411 , and the second position sensor 435 may be disposed on the substrate 450 to face the second magnet 431 .

[0128] The first position sensor 415 and the second position sensor 435 may each be a Hall sensor.

[0129] Figure 8 is an exploded perspective view of an aperture module according to another embodiment of the present disclosure. Figure 9 It shows that Figure 8 A bottom view of the aperture module in a state where the entrance aperture has a maximum size, and Figure 10 It shows that Figure 8 A bottom view of the aperture module showing a state in which the entrance aperture has a minimum size.

[0130] refer to Figure 8 According to another embodiment of the present disclosure, the aperture module 10' is Figures 1 to 7 The embodiment shown in FIG. 1 is different in that the first moving pin 211 of the first moving frame 210 and the second moving pin 231 of the second moving frame 230 .

[0131] Figure 8 The first moving frame 210 in the embodiment shown in FIG may have one first moving pin 211 instead of Figures 1 to 7 The two first moving pins 211 in the embodiment shown in FIG, and Figure 8 The second moving frame 230 in the embodiment shown in FIG may have one second moving pin 231 instead of Figures 1 to 7 There are two second moving pins 231 in the embodiment shown in FIG. The first moving pin 211 and the second moving pin 231 may be spaced apart in the first axis (X axis) direction with the incident hole 130 interposed therebetween.

[0132] The first moving pin 211 and the second moving pin 231 may be disposed at respective positions that do not overlap with the incident hole 130 in the second axis (Y axis) direction.

[0133] The first moving pins 211 of the first moving frame 210 may form a rotation axis for a portion of the plurality of blades 300. The second moving pins 231 of the second moving frame 230 may form a rotation axis for the remaining portion of the plurality of blades 300. For example, half of the plurality of blades 300 may be connected to the first moving pins 211 of the first moving frame 210, and the other half of the plurality of blades 300 may be connected to the second moving pins 231 of the second moving frame 230.

[0134] The first moving pin 211 of the first moving frame 210 may be connected to the first blade 310 and the second blade 320. In addition, the second moving pin 231 of the second moving frame 230 may be connected to the third blade 330 and the fourth blade 340. Figure 8 The rotation axis of the first blade 310 may be the same as the rotation axis of the second blade 320. In addition, the rotation axis of the third blade 330 may be the same as the rotation axis of the fourth blade 340.

[0135] A through-hole 170 passing through the base 100 may be formed in the base 100 , and the first and second moving pins 211 and 231 may pass through corresponding ones of the through-holes 170 and protrude from the other surface of the base 100 .

[0136] As the first moving frame 210 and the first moving pin 211 move, the first blade 310 and the second blade 320 can move while rotating around the first moving pin 211 as a rotation axis. In addition, as the second moving frame 230 and the second moving pin 231 move, the third blade 330 and the fourth blade 340 can move while rotating around the second moving pin 231 as a rotation axis.

[0137] The entrance aperture 130 may be defined by surfaces of the plurality of blades 300 that face the optical axis (Z-axis) (or the center of the entrance aperture 130). The position of each of the plurality of blades 300 may be changed by the driving unit 400. Thus, the size of the entrance aperture 130 may vary depending on the position of each of the plurality of blades 300. For example, as each of the plurality of blades 300 rotates, the size of the entrance aperture 130 may decrease or increase.

[0138] like Figure 9 As shown in FIG, at its maximum dimension, the entrance aperture 130 may have an octagonal shape, and as shown in FIG. Figure 10 As shown in , at its smallest dimension, the entrance aperture 130 may have a hexagonal shape.

[0139] Figure 11 is a schematic diagram of a camera module according to an embodiment of the present disclosure.

[0140] See also Figure 11 The camera module 1 according to an embodiment of the present disclosure may include a reflection module 20, a lens module 30, and an aperture module 10 or 10', and may further include a housing 40. In addition, the camera module 1 may further include an image sensor 50 disposed in the housing 40.

[0141] In this embodiment, the optical axis (Z axis) of the lens module 30 is perpendicular to the thickness direction (direction from the front surface to the rear surface of the portable electronic device or the reverse direction) of the portable electronic device in which the camera module 1 is mounted.

[0142] For example, the optical axis (Z axis) of the lens module 30 can be oriented in the width direction or the length direction of the portable electronic device. In the camera module 1 of this embodiment, the optical axis (Z axis) of the lens module 30 is oriented in the width direction or the length direction of the portable electronic device, thereby reducing the thickness of the portable electronic device.

[0143] The reflection module 20 and the lens module 30 can be arranged in the housing 40, as shown in FIG. Figure 11 However, it is also possible to provide the reflection module 20 and the lens module 30 in separate housings and combine these housings with each other.

[0144] The reflective module 20 may be disposed in front of the lens module 30. The reflective module 20 may be configured to redirect light. For example, the direction of light incident on the housing 40 may be redirected by the reflective module 20 so as to be directed toward the lens module 30. The reflective module 20 may include a reflective member that reflects light or changes the path of light. The reflective member may be a reflector, or more preferably, a prism.

[0145] Figures 1 to 7The aperture module 10 shown in Figures 8 to 10 The aperture module 10' shown in FIG can be disposed between the reflection module 20 and the lens module 30. Figure 11 In the embodiment, the reflection module 20, the aperture module 10 or 10' and the lens module 30 may be arranged in sequence along the direction in which light travels.

[0146] Figure 12 is a schematic diagram of a camera module according to another embodiment of the present disclosure.

[0147] See also Figure 12 A camera module 1' according to another embodiment of the present disclosure may include a reflection module 20, a lens module 30, and an aperture module 10 or 10', and may further include a housing 40. In addition, an image sensor 50 disposed in the housing 40 may be further included.

[0148] In this embodiment, the optical axis (Z axis) of the lens module 30 may be oriented in the thickness direction of the portable electronic device in which the camera module 1 ′ is mounted (direction from the front surface to the rear surface of the portable electronic device or the opposite direction).

[0149] The lens module 30 and the reflection module 20 may be provided in the housing 40. However, it is also possible to provide the lens module 30 and the reflection module 20 in separate housings and combine these housings with each other.

[0150] The reflection module 20 may be disposed behind the lens module 30. Figure 12 The embodiment shown in can reduce the Fno (f-number) of the camera module 1 ′.

[0151] The reflective module 20 can be configured to change the direction of light. For example, the direction of light passing through the lens module 30 can be changed by the reflective module 20. The reflective module 20 can include a reflective member that reflects light or changes the path of light. The reflective member can be a reflector, and more preferably, a prism.

[0152] Figures 1 to 7 The aperture module 10 shown in Figures 8 to 10 The aperture module 10 ′ shown in FIG. 1 may be disposed between the lens module 30 and the reflection module 20 .

[0153] That is, in Figure 12 In the embodiment, the lens module 30, the aperture module 10 or 10' and the reflection module 20 may be arranged sequentially in the direction in which light travels.

[0154] Although this disclosure includes specific examples, it will be apparent after understanding the disclosure of this 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 description of the 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 the components in the described systems, architectures, devices or circuits are combined in different ways and / or replaced or supplemented by other components or their equivalents. Therefore, the scope of the disclosure is not limited by the specific embodiments, but by the claims and their equivalents, and all changes within the scope of the claims and their equivalents are to be construed as included in this disclosure.

Claims

1. An aperture module, characterized in that: include: base; a plurality of blades rotatably disposed on the base and forming an entrance hole; as well as a moving portion configured to move relative to the base, wherein the moving portion includes a first moving frame and a second moving frame configured to move toward or away from each other, and A rotation shaft of each of the plurality of blades moves together with the first moving frame and the second moving frame.

2. The aperture module according to claim 1, wherein: Rotation shafts of a portion of the plurality of blades are provided on the first moving frame, and rotation shafts of the remaining portion of the plurality of blades are provided on the second moving frame.

3. The aperture module according to claim 1, wherein: The first moving frame includes a first moving pin, The second moving frame includes a second moving pin, and The first moving pin and the second moving pin form the rotation axis of each of the plurality of blades.

4. The aperture module according to claim 3, wherein: The first moving pin of the first moving frame and the second moving pin of the second moving frame are disposed at respective positions that do not overlap with the incident aperture in a direction perpendicular to a moving direction of the moving portion.

5. The aperture module according to claim 4, characterized in that: The corresponding positions at which the first moving pin of the first moving frame and the second moving pin of the second moving frame are arranged do not overlap with the incident hole in the moving direction of the moving part.

6. The aperture module according to claim 3, wherein: The first moving pin of the first moving frame and the second moving pin of the second moving frame are provided at respective positions spaced apart from each other in a moving direction of the moving portion.

7. The aperture module according to claim 3, wherein: Each of the plurality of blades includes a rotation hole in which a corresponding one of the first moving pin and the second moving pin is disposed.

8. The aperture module according to claim 3, wherein: The base includes a fixing pin, and each of the plurality of blades includes a guide hole in which the fixing pin is disposed.

9. The aperture module according to claim 8, characterized in that: A distance between any one of the first moving pin and the second moving pin and the incident hole is smaller than a distance between the guide hole and the incident hole.

10. The aperture module according to claim 8, wherein: The guide hole has a curved shape.

11. The aperture module according to claim 3, wherein: The base includes a fixing pin, The plurality of blades is an even number of blades, Half of the even-numbered blades are connected to the first moving pins of the first moving frame, The remaining half of the even-numbered blades are connected to the second moving pins of the second moving frame, and Each of the plurality of blades includes a guide hole in which the fixing pin is disposed.

12. The aperture module according to claim 1, wherein: The plurality of blades include a first blade, a second blade, a third blade, and a fourth blade, The first moving frame includes two first moving pins spaced apart from each other in a direction perpendicular to a moving direction of the first moving frame, The second moving frame includes two second moving pins spaced apart from each other in a direction perpendicular to a moving direction of the second moving frame, The two first moving pins form a rotation axis of the first blade and a rotation axis of the second blade, and The two second moving pins form a rotation axis of the third blade and a rotation axis of the fourth blade.

13. The aperture module according to claim 1, wherein: Also includes: a first driving part including a first magnet provided on the first moving frame or the base and a first coil provided to face the first magnet; as well as The second driving part includes a second magnet provided on the second moving frame or the base and a second coil provided to face the second magnet.

14. The aperture module according to claim 13, wherein: Also includes: a first ball member disposed between the first moving frame and the base; a second ball member disposed between the second moving frame and the base; as well as The pulling yoke portion includes a first pulling yoke facing the first magnet and a second pulling yoke facing the second magnet.

15. The aperture module according to claim 1, wherein: The plurality of blades are configured to change the size of the entrance aperture as the plurality of blades rotate, At its largest dimension, the entrance aperture has an octagonal shape, and At its smallest dimension, the entrance aperture has a hexagonal shape.

16. A camera module, characterized in that: include: A lens module comprising a plurality of lenses; a reflection module disposed in front of or behind the lens module in the optical axis direction and including a reflection member configured to change a path of light; as well as An aperture module is provided between the lens module and the reflection module and includes: base; a plurality of blades rotatably disposed on the base and forming an incident aperture; and The first moving frame and the second moving frame are configured to move relative to the base and move toward or away from each other, wherein the first moving frame comprises at least one first moving pin, and the at least one first moving pin is configured to move together with the first moving frame, The second moving frame includes at least one second moving pin configured to move together with the second moving frame, and The at least one first moving pin forms a rotation axis of a portion of the plurality of blades, and the at least one second moving pin forms a rotation axis of the remaining portion of the plurality of blades.

17. The camera module according to claim 16, wherein: The first movable pin and the second movable pin: are spaced apart from each other in a moving direction of the first moving frame and a moving direction of the second moving frame, and The first moving frame and the second moving frame are disposed at corresponding positions that do not overlap with the incident hole in a direction perpendicular to both the moving directions of the first moving frame and the second moving frame.

18. The camera module according to claim 16, wherein: Each of the plurality of blades includes a guide hole having a curved shape, The base includes a fixing pin inserted into the guide hole of each of the plurality of blades, and The first movable pin and the second movable pin are disposed closer to the incident hole than the fixed pin.

19. An aperture module, characterized in that: include: base; a plurality of blades rotatably disposed on the base and forming an entrance hole; as well as A plurality of moving pins form rotation axes of the plurality of blades and are configured to move linearly relative to the base to rotate the plurality of blades, thereby changing the size of the incident aperture.

20. The aperture module according to claim 19, wherein: The base includes a plurality of fixing pins, Each of the plurality of blades includes a rotation hole in which one of the plurality of moving pins is disposed, and Each of the plurality of blades further includes a guide hole in which one of the fixing pins is disposed.

21. The aperture module according to claim 20, wherein: The diameter of the rotating holes of the plurality of blades is equal to the diameter of the plurality of moving pins, The guide holes of the plurality of blades have a width equal to the diameter of the plurality of fixing pins, and The guide holes of the plurality of blades have lengths greater than diameters of the plurality of fixing pins, so that when the plurality of blades rotate to change the size of the incident hole, the plurality of fixing pins slide in the guide holes of the plurality of blades.

22. The aperture module according to claim 19, wherein: Also included are a first moving frame and a second moving frame, wherein the first moving frame and the second moving frame are configured to move in a straight line relative to the base and move toward or away from each other, A portion of the plurality of moving pins is provided on the first moving frame, and The remaining portion of the plurality of moving pins is provided on the second moving frame.

23. An aperture module, characterized in that: include: base; a plurality of blades rotatably disposed on the base and forming an entrance hole; as well as a plurality of movable pins forming rotation axes of the plurality of blades and configured to move relative to the base to rotate the plurality of blades, thereby changing the size of the incident aperture; Part of the plurality of moving pins is arranged on one side of the incident hole in the moving direction of the plurality of moving pins, and the rest of the plurality of moving pins is arranged on the opposite side of the incident hole in the moving direction of the plurality of moving pins.

24. The aperture module according to claim 23, wherein: The base includes a plurality of fixing pins, Each of the plurality of blades includes a rotation hole in which one of the plurality of moving pins is disposed, and Each of the plurality of blades further includes a guide hole in which one of the plurality of fixing pins is disposed.

25. The aperture module according to claim 23, wherein: The plurality of blades include a first blade, a second blade, a third blade, and a fourth blade, The plurality of movable pins include two first movable pins and two second movable pins, the two first movable pins being arranged on one side of the incident hole in a moving direction of the plurality of movable pins, and the two second movable pins being arranged on an opposite side of the incident hole in the moving direction of the plurality of movable pins. The first of the two first moving pins forms the rotation axis of the first blade, The second of the two first moving pins forms the rotation axis of the second blade, The first of the two second moving pins forms the rotation axis of the third blade, The second of the two second moving pins forms the rotation axis of the fourth blade, The two first moving pins are spaced apart from each other in a direction perpendicular to a moving direction of the plurality of moving pins, The two second moving pins are spaced apart from each other in a direction perpendicular to a moving direction of the plurality of moving pins, and The two first moving pins and the two second moving pins do not overlap with the incident hole in a moving direction of the plurality of moving pins.

26. The aperture module according to claim 23, wherein: The plurality of blades include a first blade, a second blade, a third blade, and a fourth blade, The plurality of movable pins include a first movable pin and a second movable pin, wherein the first movable pin is disposed on one side of the incident hole in a moving direction of the plurality of movable pins, and the second movable pin is disposed on an opposite side of the incident hole in the moving direction of the plurality of movable pins. The first moving pin forms a rotation axis of the first blade and a rotation axis of the second blade, The second moving pin forms a rotation axis of the third blade and a rotation axis of the fourth blade, and The first moving pin and the second moving pin do not overlap with the incident hole in a moving direction of the plurality of moving pins.

Images