Aperture module and camera module

Abstract

The aperture module comprises: a base; a rotating plate rotatably arranged on the base; and blades configured to form an incident hole and move by the rotation of the rotating plate to change the size of the incident hole. The blades are arranged in an opening arranged in the rotating plate.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of priority from Korean Patent Application No. 10-2020-0139601 filed on October 26, 2020, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein in its entirety for all purposes by reference. Technical Field

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

[0004] Recently, camera modules have been installed as standard in portable electronic devices such as tablet personal computers (PCs), notebooks, and smart phones. Conventional digital cameras include a mechanical aperture to change the amount of incident light according to the image capturing environment, but due to structural characteristics and space limitations, it is difficult for a camera module used in a small product such as a portable electronic device to include an aperture separately.

[0005] In the case of a smartphone camera, since the space in which the aperture can be installed is limited, the aperture installed in the smartphone camera module developed so far has fixed values ​​corresponding to two parts of a large size and a small size. Therefore, the range of selection is limited, and there is a limitation in obtaining the amount of light desired by the user when capturing an image.

[0006] Furthermore, a plurality of blades are required to implement the entrance hole size of the aperture to be various and close to a sphere, and therefore, there is a problem that the thickness of the aperture module may increase. Summary of the invention

[0007] The purpose of providing this summary is to introduce a selection of inventive concepts in a concise form, and these inventive concepts will be further described in the following detailed description. This summary is not intended to identify the key features or essential features of the subject matter claimed, nor is it intended to help determine the scope of the subject matter claimed.

[0008] In a general aspect, an aperture module includes: a base; a rotating plate rotatably disposed on the base; and blades configured to form an entrance aperture and moved by rotation of the rotating plate to change a size of the entrance aperture, wherein the blades are disposed in an opening disposed in the rotating plate.

[0009] The blades and the rotating plate may be disposed at substantially the same position in the optical axis direction.

[0010] The blades may be arranged to at least partially overlap each other in the direction of the optical axis.

[0011] The blades may include first type blades and second type blades, the second type blades at least partially overlapping the first type blades in the optical axis direction. The first type blades and the second type blades may be alternately arranged in the circumferential direction.

[0012] The first type blades may include two or more first type blades, and the second type blades may include two or more second type blades.

[0013] The first type blade may include a first portion and a second portion thinner than the first portion. At least a portion of the second portion may be configured to be selectively received in a receiving portion formed in the second type blade.

[0014] The aperture module may further include a link connected to at least one of the blades and the rotating plate.

[0015] The connecting rod may include a first hole and a second hole respectively disposed at one end of the connecting rod and the other end of the connecting rod. The rotating plate may include a first pin corresponding to the first hole. At least one of the blades may include a second pin corresponding to the second hole.

[0016] The rotating plate may include a recessed portion having a height lower than a height of a periphery of the rotating plate. The first pin may be disposed in the recessed portion.

[0017] At least one of the blades includes a recessed portion having a height lower than a height of a periphery of the blade. The second pin may be disposed in the recessed portion.

[0018] The aperture module may further include a guide plate fixedly disposed on the base and forming a seating surface at least partially in contact with the rotating plate and the blades.

[0019] The guide plate may include a protruding portion on the seating surface corresponding to at least one of the blades. At least one of the blades may include a guide groove configured to receive the protruding portion.

[0020] The guide groove may extend in a radial direction of the rotating plate in at least one of the blades.

[0021] At least one of the blades may include a protruding portion.The guide plate may include a guide groove provided on the seating surface and configured to receive the protruding portion.

[0022] In another general aspect, an aperture module includes: a base; a rotating plate rotatably disposed on the base; blades configured to form an incident aperture and moved by rotation of the rotating plate to change a size of the incident aperture; and a link connected to at least one of the blades and the rotating plate.

[0023] The link may be rotatably coupled to at least one of the blades and the rotating plate.

[0024] The blades may include two or more first type blades and two or more second type blades, the two or more second type blades respectively at least partially overlapping the two or more first type blades in the optical axis direction. The first type blades and the second type blades may be alternately arranged in the circumferential direction.

[0025] The blade may include a first blade and a second blade, the second blade at least partially overlapping the first blade in the optical axis direction. An end portion of the second blade may include a recess configured to receive the end portion of the first blade.

[0026] In another general aspect, a camera module includes: a housing; a lens module disposed in the housing and including at least one lens having an optical axis; and an aperture module disposed above the lens module in the direction of the optical axis. The aperture module includes: a base; a rotating plate rotatably disposed on the base and including an annular member surrounding an opening through which the optical axis extends; and a blade configured to form a hole through which light incident to the aperture module passes, and the blade is configured to move by rotation of the rotating plate to change the size of the hole. The blade is disposed in the opening and does not overlap with the annular member in the direction of the optical axis.

[0027] The camera module may further include: a guide plate forming a seating surface on which the blade and the rotating plate are disposed. The guide plate may be configured to guide movement of the blade in a radial direction relative to the optical axis.

[0028] The camera module may further include a rotatable link connecting the rotating plate to each of the blades.

[0029] The blade may include a first blade and a second blade, the second blade at least partially overlapping the first blade in the direction of the optical axis. An end portion of the second blade may include a recess configured to receive an end portion of the first blade.

[0030] The surface of the first blade may include a step portion configured to meet an end portion of the second blade.

[0031] In another general aspect, a portable electronic device may include the camera module described above.

[0032] Other features and aspects will become apparent from the following detailed description, the accompanying drawings, and the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a perspective view of a camera module according to an embodiment.

[0034] Figure 2is a schematic exploded perspective view of a camera module according to an embodiment.

[0035] Figure 3 is a combined stereogram according to an embodiment, wherein only Figure 2 The cover of the aperture module is shown.

[0036] Figure 4 is an exploded perspective view of an aperture module according to an embodiment.

[0037] Figure 5 It is along Figure 3 A cross-sectional view taken along line II'.

[0038] Figure 6 Blades included in an aperture module according to an embodiment are shown.

[0039] Figure 7 Another blade included in an aperture module according to an exemplary embodiment is shown.

[0040] Figure 8 is a plan view of the aperture module when the entrance hole has a minimum size in an embodiment.

[0041] Fig. 9 is a plan view of an aperture module when the entrance hole has an intermediate size in an embodiment.

[0042] Fig.10 is a plan view of the aperture module when the entrance hole has a maximum size in an embodiment.

[0043] Throughout the drawings and detailed description, the same reference numerals refer to the same elements. For purposes of clarity, illustration, and convenience, the drawings may not be drawn to scale, and the relative sizes, proportions, and depictions of elements in the drawings may be exaggerated. DETAILED DESCRIPTION

[0044] The following specific embodiments are provided to help the reader obtain a comprehensive understanding of the methods, devices and / or systems described in this application. However, various changes, modifications and equivalents of the methods, devices and / or systems described in this application will be apparent after understanding the present disclosure. For example, the order of operations described in this application is merely an example, and except for operations that must occur in a specific order, it is not limited to the order set forth in this application, but can be changed, which will be apparent after understanding the present disclosure. In addition, for greater clarity and brevity, the description of features known in the art may be omitted.

[0045] The features described in this application may be implemented in different forms and should not be construed as being limited to the examples described in this application. More specifically, the examples described in this application are provided merely to illustrate some of the many possible ways of implementing the methods, devices and / or systems described in this application that will be apparent after understanding the present disclosure. Hereinafter, although embodiments of the present disclosure will be described in detail with reference to the accompanying drawings, it should be noted that the examples are not limited to the described embodiments.

[0046] Throughout the specification, when an element such as a layer, region, or substrate is described as being "on," "connected to," or "coupled to" another element, the element may be directly "on," "connected to," or "coupled 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 coupled to" another element, there are no other elements between the element and the other element. As used in this application, a "portion" of an element may include the entire element or less than the entire element.

[0047] As used in this application, 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.

[0048] Although the terms "first", "second" and "third" may be used in this application to describe various members, components, regions, layers or parts, these members, components, regions, layers or parts are not limited by these terms. More specifically, these terms are only used to distinguish one member, component, region, layer or part from another member, component, region, layer or part. Therefore, without departing from the teachings of the examples described in this application, the first member, first component, first region, first layer or first part mentioned in these examples may also be referred to as the second member, second component, second region, second layer or second part.

[0049] Spatially relative terms such as "above", "higher", "below", "lower", etc. may be used in this application for descriptive convenience to describe the relationship of one element relative to another element as shown in the accompanying drawings. In addition to covering the orientations depicted in the accompanying drawings, these spatially relative terms are intended to also cover different orientations of the device in use or operation. For example, if the device in the accompanying drawings is flipped, an element described as being "above" or "higher" relative to another element will be "below" or "lower" relative to the other element. Therefore, depending on the spatial orientation of the device, the term "above" covers both orientations of "above" and "below". The device may also be oriented in other ways (e.g., rotated 90 degrees or in other orientations), and the spatially relative terms used in this application should be interpreted accordingly.

[0050] The terms used in this application are only used to describe various examples and are not used to limit the present disclosure. Unless the context clearly indicates otherwise, the articles "a", "an" and "the" are intended to also include plural forms. The words "include", "comprise" and "have" indicate the presence of the features, numbers, operations, components, elements and / or their combinations, but do not exclude the presence or addition of one or more other features, numbers, operations, components, elements and / or their combinations.

[0051] Variations in the shapes shown in the drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described in the present application are not limited to the specific shapes shown in the drawings, but include variations in shapes that occur during manufacturing.

[0052] Features of the examples described in this application may be combined in various ways that will be apparent after understanding the present disclosure. In addition, although the examples described in this application have various configurations, other configurations that will be apparent after understanding the present disclosure are also possible.

[0053] It should be noted that in this application, the use of the word “may” with respect to an example, for example, regarding what an example may include or implement, means that there is at least one example in which such feature is included or implemented, and all examples are not limited thereto.

[0054] Figure 1 is a perspective view of a camera module 100 according to an embodiment. Figure 2 is a schematic exploded perspective view of the camera module 100 .

[0055] Reference Figure 1 and Figure 2The camera module 100 may include, for example, a lens barrel 210, an actuator configured to move the lens barrel 210, a housing 110 and a casing 120 in which the lens barrel 210 and the actuator are accommodated, an image sensor module 700 configured to convert light incident through the lens barrel 210 into an electrical signal, and an aperture module 800 configured to adjust the amount of light incident to the lens barrel 210.

[0056] The lens barrel 210 may have a hollow cylindrical shape so that a plurality of lenses configured to capture an image of a subject may be accommodated therein, and the plurality of lenses may be installed along an optical axis in the lens barrel 210. The number of lenses provided in the lens barrel 210 may depend on the design of the lens barrel 210, and the respective lenses may have optical characteristics such as the same refractive index, different refractive indexes, etc.

[0057] The actuator may move the lens barrel 210. As an example, the actuator may move the lens barrel 210 in the optical axis (Z axis) direction to focus the lens, and move the lens barrel 210 in a direction perpendicular to the optical axis (Z axis) to correct shaking when capturing an image. The actuator may include a focusing portion 400 configured to focus the lens and a shake correction portion 500 configured to correct shaking.

[0058] The image sensor module 700 can convert the light incident thereon through the lens barrel 210 into an electrical signal. As an example, the image sensor module 700 may include an image sensor 710 and a printed circuit board 720 connected to the image sensor 710, and may also include an infrared filter. The infrared filter may cut off the light in the infrared region of the light incident to the infrared filter through the lens barrel 210. The image sensor 710 may convert the light incident thereon through the lens barrel 210 into an electrical signal. As an example, the image sensor 710 may include a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS). The electrical signal converted by the image sensor 710 may be output as an image, for example, through a display unit of a portable electronic device. The image sensor 710 may be fixed to the printed circuit board 720 and may be electrically connected to the printed circuit board 720 by wire bonding.

[0059] The lens barrel 210 and the actuator may be accommodated in the housing 120. As an example, the housing 120 may have a shape in which the top and bottom of the housing 120 are open, and the lens barrel 210 and the actuator may be accommodated in the inner space of the housing 120. The image sensor module 700 may be disposed at the bottom of the housing 120.

[0060] The housing 110 may be coupled to the housing 120 to surround the outer surface of the housing 120, and may protect the internal components of the camera module 100. In addition, the housing 110 may shield electromagnetic waves. The housing 110 may be formed of metal, and thus may be grounded to a ground pad provided on the printed circuit board 720, thereby shielding electromagnetic waves.

[0061] The actuator may move the lens barrel 210 so as to focus the lens on the object. As an example, the actuator may include a focusing portion 400 configured to move the lens barrel 210 in an optical axis (Z-axis) direction.

[0062] The focusing portion 400 may include a magnet 410 and an integrated coil 420 configured to generate a driving force to move the lens barrel 210 and the carrier 300 accommodating the lens barrel 210 therein in an optical axis (Z-axis) direction.

[0063] The magnet 410 may be mounted on the carrier 300. As an example, the magnet 410 may be mounted on the first surface of the carrier 300. The coil 420 may be mounted on the housing 120 and may be disposed to face the magnet 410. As an example, the coil 420 may be disposed on the first surface of the substrate 600, and the substrate 600 may be mounted on the housing 120.

[0064] The magnet 410 may be mounted on the carrier 300 so as to move in the optical axis (Z axis) direction together with the carrier 300, and the coil 420 may be fixed to the housing 120. However, according to another embodiment, the positions of the magnet 410 and the coil 420 may be interchanged.

[0065] When a driving signal is applied to the coil 420 , the carrier 300 may move in the optical axis (Z-axis) direction by electromagnetic interaction between the magnet 410 and the coil 420 .

[0066] Since the lens barrel 210 is accommodated in the carrying portion 300, the lens barrel 210 can also move in the optical axis (Z axis) direction by the movement of the carrying portion 300. In addition, since the frame 310 and the lens holder 320 are accommodated in the carrying portion 300, the frame 310, the lens holder 320 and the lens barrel 210 can move together in the optical axis (Z axis) direction by the movement of the carrying portion 300.

[0067] The rolling member B1 may be disposed between the bearing portion 300 and the housing 120 to reduce friction between the bearing portion 300 and the housing 120 when the bearing portion 300 moves. The rolling member B1 may have a spherical form. The rolling member B1 may be disposed on opposite sides of the magnet 410.

[0068] The yoke 440 may be disposed on the housing 120. As an example, the yoke 440 may be mounted on the substrate 600 and disposed on the housing 120. The yoke 440 may be disposed on the first surface of the substrate 600. Therefore, the yoke 440 may be disposed to face the magnet 410, and the coil 420 is interposed between the magnet 410 and the yoke 440. An attractive force may act between the yoke 440 and the magnet 410 in a direction perpendicular to the optical axis (Z axis). Therefore, the rolling member B1 may be maintained in a state of contact with the bearing portion 300 and the housing 120 by the attractive force between the yoke 440 and the magnet 410. In addition, the yoke 440 may collect the magnetic force of the magnet 410 to prevent the generation of leaked magnetic flux. As an example, the yoke 440 and the magnet 410 may form a magnetic circuit.

[0069] In the disclosure of the present application, during the focusing process, a closed-loop control method for sensing and feeding back the position of the lens barrel 210 can be used. Therefore, the focusing part 400 can include a position detection element for closed-loop control. As an example, the position detection element can include an AF Hall element 430. The magnetic flux value detected by the AF Hall element 430 can change according to the movement of the magnet 410 facing the AF Hall element 430. The position detection element can detect the position of the lens barrel 210 from the change of the magnetic flux value of the AF Hall element 430 according to the movement of the magnet 410 in the optical axis (Z axis) direction.

[0070] The shake correction part 500 can be operated to correct image blur or moving picture shake caused by factors such as hand shake of the user when capturing images or moving pictures. For example, when a shake is generated due to hand shake of the user, etc. when capturing an image, the shake correction part 500 can apply a relative displacement corresponding to the shake to the lens barrel 210 to compensate for the shake. As an example, the shake correction part 500 can move the lens barrel 210 in a direction perpendicular to the optical axis (Z axis) to correct the shake.

[0071] The shake correction part 500 may include a first magnet 510a and a second magnet 520a configured to generate a driving force to move the guide member in a direction perpendicular to the optical axis (Z axis) and a first coil 510b and a second coil 520b. The frame 310 and the lens holder 320 may be inserted into the carrier 300, may be stacked in the optical axis (Z axis) direction, and may guide the movement of the lens barrel 210. The frame 310 and the lens holder 320 may have a space in which the lens barrel 210 may be inserted. The lens barrel 210 may be inserted and fixed to the lens holder 320.

[0072] The frame 310 and the lens holder 320 can be moved in a direction perpendicular to the optical axis (Z axis) relative to the bearing portion 300 by a driving force generated by electromagnetic interaction between the first magnet 510a and the second magnet 520a and the first coil 510b and the second coil 520b. The first magnet 510a is arranged on the second surface of the lens holder 320, and the first coil 510b is arranged on the second surface of the substrate 600, so that the first magnet 510a and the first coil 510b can generate a driving force in the direction of the first axis (Y axis) perpendicular to the optical axis (Z axis). In addition, the second magnet 520a is arranged on the third surface of the lens holder 320, and the second coil 520b is arranged on the third surface of the substrate 600, so that the second magnet 520a and the second coil 520b can generate a driving force in the direction of the second axis (X axis) perpendicular to the first axis (Y axis). Here, the second axis (X axis) refers to an axis perpendicular to both the optical axis (Z axis) and the first axis (Y axis). The first magnet 510 a and the second magnet 520 a may be disposed to be orthogonal to each other on a plane perpendicular to the optical axis (Z axis).

[0073] The first and second magnets 510 a and 520 a may be mounted on the lens holder 320 , and the first and second coils 510 b and 520 b facing the first and second magnets 510 a and 520 a , respectively, may be disposed on the substrate 600 and mounted on the housing 120 .

[0074] The first magnet 510a and the second magnet 520a may be moved in a direction perpendicular to the optical axis (Z axis) together with the lens holder 320, and the first coil 510b and the second coil 520b may be fixed to the housing 120. However, according to another embodiment, the positions of the first magnet 510a and the second magnet 520a and the first coil 510b and the second coil 520b may be interchanged.

[0075] In the present disclosure, during the shake correction process, a closed-loop control method for sensing and feeding back the position of the lens barrel 210 may be used. Therefore, the shake correction part 500 may include a position detection element for closed-loop control. The position detection element may include a first optical image stabilization (OIS) Hall element 510c and a second OIS Hall element 520c. The first OIS Hall element 510c and the second OIS Hall element 520c may be disposed on the substrate 600 and mounted on the housing 120. Therefore, the first OIS Hall element 510c and the second OIS Hall element 520c may face the first magnet 510a and the second magnet 520a, respectively, in a direction perpendicular to the optical axis (Z axis). As an example, the first OIS Hall element 510c may be disposed on the second surface of the substrate 600, and the second OIS Hall element 520c may be disposed on the third surface of the substrate 600.

[0076] The magnetic flux values ​​of the first OIS Hall element 510c and the second OIS Hall element 520c may change according to the movement of the first magnet 510a and the second magnet 520a, respectively. The position detection element may detect the position of the lens barrel 210 from the changes in the magnetic flux values ​​of the first OIS Hall element 510c and the second OIS Hall element 520c according to the movement of the first magnet 510a and the second magnet 520a in two directions (X-axis direction and Y-axis direction) perpendicular to the optical axis, respectively.

[0077] The camera module 100 may include a plurality of ball members supporting the shake correction portion 500. The plurality of ball members may be used to guide the movement of the frame 310, the lens holder 320, and the lens barrel 210 during the shake correction process. In addition, the plurality of ball members may also be used to maintain the intervals between the bearing portion 300, the frame 310, and the lens holder 320.

[0078] The plurality of ball members may include a first ball member B2 and a second ball member B3. The first ball member B2 may guide the movement of the frame 310, the lens holder 320 and the lens barrel 210 in the first axis (Y axis) direction, and the second ball member B3 may guide the movement of the lens holder 320 and the lens barrel 210 in the second axis (X axis) direction.

[0079] As an example, when a driving force is generated in the direction of the first axis (Y axis), the first ball component B2 can move in a rolling motion in the direction of the first axis (Y axis). Therefore, the first ball component B2 can guide the movement of the frame 310, the lens holder 320 and the lens barrel 210 in the direction of the first axis (Y axis). In addition, when a driving force is generated in the direction of the second axis (X axis), the second ball component B3 can move in a rolling motion in the direction of the second axis (X axis). Therefore, the second ball component B3 can guide the movement of the lens holder 320 and the lens barrel 210 in the direction of the second axis (X axis).

[0080] The first ball member B2 may include a plurality of ball members disposed between the bearing portion 300 and the frame 310 , and the second ball member B3 may include a plurality of ball members disposed between the frame 310 and the lens holder 320 .

[0081] The first guide groove portion 301 in which the first ball member B2 is accommodated can be formed in the surfaces of the bearing portion 300 and the frame 310 facing each other in the optical axis (Z axis) direction. The first guide groove portion 301 may include a plurality of guide grooves corresponding to the plurality of ball members of the first ball member B2. The first ball member B2 can be accommodated in the first guide groove portion 301 and assembled between the bearing portion 300 and the frame 310. In the state where the first ball member B2 is accommodated in the first guide groove portion 301, the movement of the first ball member B2 in the optical axis (Z axis) direction and the second axis (X axis) direction can be limited, and the first ball member B2 can only move in the first axis (Y axis) direction. As an example, the first ball member B2 can only move in the first axis (Y axis) direction in a rolling motion. To this end, the planar shape of each of the plurality of guide grooves of the first guide groove portion 301 can be a rectangular shape having a length in the first axis (Y axis) direction.

[0082] The second guide groove portion 311 in which the second ball member B3 is accommodated may be formed in surfaces of the frame 310 and the lens holder 320 facing each other in the optical axis (Z axis) direction, respectively. The second guide groove portion 311 may include a plurality of guide grooves corresponding to the plurality of ball members of the second ball member B3.

[0083] The second ball member B3 can be accommodated in the second guide groove portion 311 and assembled between the frame 310 and the lens holder 320. In the state where the second ball member B3 is accommodated in the second guide groove portion 311, the movement of the second ball member B3 in the optical axis (Z axis) direction and the first axis (Y axis) direction can be limited, and the second ball member B3 can move only in the second axis (X axis) direction. As an example, the second ball member B3 can move only in the second axis (X axis) direction in a rolling motion. To this end, the planar shape of each of the multiple guide grooves of the second guide groove portion 311 can be a rectangular shape having a length in the second axis (X axis) direction.

[0084] A third ball member B4 supporting movement of the lens holder 320 may be disposed between the bearing portion 300 and the lens holder 320. The third ball member B4 may guide both movement of the lens holder 320 in the first axis (Y axis) direction and movement of the lens holder 320 in the second axis (X axis) direction.

[0085] As an example, when a driving force is generated in the first axis (Y axis) direction, the third ball member B4 may move in a rolling motion in the first axis (Y axis) direction. Therefore, the third ball member B4 may guide the movement of the lens holder 320 in the first axis (Y axis) direction.

[0086] In addition, when a driving force is generated in the second axis (X axis) direction, the third ball member B4 can move in a rolling motion in the second axis (X axis) direction. Therefore, the third ball member B4 can guide the movement of the lens holder 320 in the second axis (X axis) direction. At the same time, the second ball member B3 and the third ball member B4 can contact and support the lens holder 320.

[0087] The third guide groove portion 302 in which the third ball member B4 is accommodated can be formed in the surfaces of the bearing portion 300 and the lens holder 320 that face each other in the optical axis (Z axis) direction. The third ball member B4 can be accommodated in the third guide groove portion 302 and assembled between the bearing portion 300 and the lens holder 320. In a state where the third ball member B4 is accommodated in the third guide groove portion 302, the movement of the third ball member B4 in the optical axis (Z axis) direction can be limited, and the third ball member B4 can move in a rolling motion in the first axis (Y axis) direction and the second axis (X axis) direction. To this end, the planar shape of each of the third guide groove portions 302 can be a circular shape. Therefore, the third guide groove portion 302 can have a planar shape different from that of the first guide groove portion 301 and the second guide groove portion 311.

[0088] The first ball component B2 can move in a rolling motion in the first axis (Y axis) direction, the second ball component B3 can move in a rolling motion in the second axis (X axis) direction, and the third ball component B4 can move in a rolling motion in the first axis (Y axis) direction and the second axis (X axis) direction.

[0089] When a driving force is generated in the first axis (Y axis) direction, the frame 310, the lens holder 320 and the lens barrel 210 can move together in the first axis (Y axis) direction. Here, the first ball member B2 and the third ball member B4 can move in a rolling motion along the first axis (Y axis). In this case, the movement of the second ball member B3 can be limited.

[0090] In addition, when the driving force is generated in the second axis (X axis) direction, the lens holder 320 and the lens barrel 210 can move in the second axis (X axis) direction. The second ball member B3 and the third ball member B4 can move in a rolling motion along the second axis (X axis). In this case, the movement of the first ball member B2 can be limited.

[0091] A plurality of yokes 510d and 520d may be provided so that the shake correction part 500 and the first to third ball members B2, B3 and B4 are maintained in a state where they are in contact with each other. A plurality of yokes 510d and 520d may be fixed to the bearing part 300, and may be provided to face the first magnet 510a and the second magnet 520a, respectively, in the direction of the optical axis (Z axis). Therefore, an attractive force may be generated between the plurality of yokes 510d and 520d and the first magnet 510a and the second magnet 520a, respectively, in the direction of the optical axis (Z axis). Since the shake correction part 500 is pressed toward the plurality of yokes 510d and 520d by the attractive force between the plurality of yokes 510d and 520d and the first magnet 510a and the second magnet 520a, the frame 310 and the lens holder 320 of the shake correction part 500 may be maintained in a state where they are in contact with the first to third ball members B2, B3 and B4. The plurality of yokes 510d and 520d may be formed of a material that can generate an attractive force between the plurality of yokes 510d and 520d and the first and second magnets 510a and 520a. As an example, the plurality of yokes 510d and 520d may be formed of a magnetic material.

[0092] A plurality of yokes 510d and 520d may be provided so that the frame 310 and the lens holder 320 may be maintained in a state where they are in contact with the first to third ball members B2, B3, and B4, and a stopper 330 may be provided to prevent the first to third ball members B2, B3, and B4, the frame 310, and the lens holder 320 from being separated from the bearing portion 300 to the outside due to an external impact, etc. The stopper 330 may be coupled to the bearing portion 300 to cover at least a portion of an upper surface of the lens holder 320.

[0093] The camera module 100 may include an aperture module 800. The aperture module 800 may be coupled to the lens barrel 210 through the upper portion of the housing 110. As an example, the aperture module 800 may be mounted on a lens holder 320 into which the lens barrel 210 is fixedly inserted, and may be coupled to the lens barrel 210. Therefore, the aperture module 800 may move together with the lens barrel 210 and the lens holder 320.

[0094] According to an embodiment, the aperture module 800 may include a magnet 890 ( Figure 3 ). The magnet 890 is a part of a driving portion capable of adjusting an entrance hole of the aperture module 800. The magnet 890 may include two magnetic materials having different polarities.

[0095] According to an exemplary embodiment, the aperture driving part may include a coil 540 configured to electromagnetically interact with the magnet 890. The coil 540 may be disposed on the fourth surface of the substrate 600 to face the magnet 890. Since the coil 540 is disposed on the fourth surface of the substrate 600, the magnet 890 and the coil 540 may generate a driving force in the first axis (Y axis) direction.

[0096] The Hall element 530 may be fixedly disposed to face the magnet 890 on the fourth surface of the substrate 600. The Hall element 530 may include a first Hall element 531 and a second Hall element 532, which are disposed with the coil 540 interposed therebetween. The magnetic flux value of the Hall element 530 may vary according to the movement of the magnet 890. The position of the magnet 890 may be detected according to the magnetic flux value of the Hall element 530.

[0097] Figure 3 is an assembled perspective view according to an embodiment, in which only the cover 820 of the aperture module 800 is disassembled. Figure 4 is an exploded perspective view of an aperture module 800 according to an embodiment. Figure 5 It is along Figure 3 A cross-sectional view taken along line II'.

[0098] Reference Figure 3 and Figure 4 , the aperture module 800 may include a base 810 , a rotating plate 840 , and blades 860 and 870 .

[0099] In an embodiment, the rotating plate 840 is rotatably disposed on the base 810. In an embodiment, the rotating plate 840 may rotate in a plane perpendicular to the optical axis relative to the base 810. In an embodiment, the rotating plate 840 may have an annular shape, wherein the center of the rotating plate 840 coincides with the optical axis.

[0100] In an embodiment, the base 810 may include extensions 812, 813, and 814 that guide the rotation of the rotating plate 840. The base 810 may include extensions 812, 813, and 814 that extend in the optical axis direction to contact the outer peripheral surface of the rotating plate 840. The extensions 812, 813, and 814 may guide the rotation of the rotating plate 840. For example, the base 810 may have three extensions 812, 813, and 814 on one surface thereof, and one side surface 812a, 813a, and 814a of the extensions 812, 813, and 814 may contact the outer peripheral surface 844 of the rotating plate 840. There may be a gap between the extensions 812, 813, and 814 and the outer peripheral surface 844 of the rotating plate 840 so that the rotating plate 840 can rotate smoothly. When a force is applied to the rotating plate 840 by the moving portion 850 which will be described in more detail later, the extending portions 812 , 813 , and 814 may restrict the movement direction of the rotating plate 840 so that the rotation center of the rotating plate 840 does not deviate from the optical axis.

[0101] In an embodiment, the rotating plate 840 may include an opening 845. Blades 860 and 870 to be described later may be disposed in the opening 845 of the rotating plate 840.

[0102] In an embodiment, the aperture module 800 may include an aperture driving part capable of rotating the rotating plate 840. In an embodiment, the aperture driving part may include a moving part 850 attached to the base 810, the magnet 890, and the coil 540.

[0103] In an embodiment, the moving part 850 may be slidable in one direction relative to the base 810. In an embodiment, the base 810 may include a guide 815, and the moving part 850 may be mounted on the guide 815. The moving part 850 may slide on the guide 815.

[0104] In an embodiment, the ball member B5 may be disposed between the moving portion 850 and the guide 815 so as to reduce the friction between the moving portion 850 and the guide 815. The moving portion 850 and / or the guide 815 may include a guide groove partially accommodating the ball member B5, and the movement direction of the ball member B5 may be limited to the direction in which the guide groove extends. For example, the moving portion 850 and / or the guide 815 may include a guide groove extending parallel to the sliding direction of the moving portion 850.

[0105] In an embodiment, the moving part 850 may be driven by electromagnetic force. In an embodiment, a magnet 890 may be attached to the moving part 850. The magnet 890 may receive the electromagnetic force by interacting with the coil 540. According to the electromagnetic interaction between the magnet 890 and the coil 540, the moving part 850 may reciprocate relative to the base 810.

[0106] In an embodiment, the rotating plate 840 may interact with the moving portion 850. In an exemplary embodiment, a portion of the moving portion 850 may push the rotating plate 840 in a circumferential direction according to the movement of the moving portion 850, and the movement of the moving portion 850 may rotate the rotating plate 840. In an embodiment, the moving portion 850 may include a protruding portion 851 extending to the rotating plate 840. The rotating plate 840 may include an accommodating portion 848 configured to accommodate the protruding portion 851. When the moving portion 850 slides in a state where the protruding portion 851 is accommodated in the accommodating portion 848, the protruding portion 851 may rotate the rotating plate 840 while pushing one point of the rotating plate 840. For example, the moving portion 850 may include a pin extending toward the rotating plate 840, and the rotating plate 840 may have a recess configured to accommodate the pin.

[0107] In an embodiment, the aperture module 800 may include blades 860 and 870. The blades 860 and 870 may define an entrance aperture of the aperture. For example, the blades 860 and 870 may be arranged in a circumferential direction, and surfaces of the blades 860 and 870 facing the center thereof may define an entrance aperture of the aperture.

[0108] In an embodiment, the aperture module 800 may include blades 860 and 870 having different shapes. In an embodiment, the aperture module 800 may include first type blades 860 and second type blades 870. In an embodiment, the first type blades 860 and the second type blades 870 may be alternately arranged in a circumferential direction.

[0109] In an embodiment, two or more first type blades 860 and two or more second type blades 870 may be provided. Figure 3 In the illustrated embodiment, three first type blades 860 and three second type blades 870 may be alternately arranged in the circumferential direction.

[0110] In an embodiment, the first type blades 860 and the second type blades 870 may be arranged at equal intervals in a circumferential direction relative to the optical axis. In the illustrated embodiment, a total of six blades 860 and 870 may be arranged at equal intervals in a circumferential direction relative to the optical axis, and the entrance aperture may have a hexagonal shape. In an embodiment, the first type blades 860 and the second type blades 870 may be arranged so that the distances between the blades 860 and 870 and the optical axis are all the same or substantially the same. In another embodiment, when the aperture module 800 includes two first type blades 860 and two second type blades 870, the shape of the entrance aperture may be a quadrilateral shape. In another embodiment, when the aperture module 800 includes four first type blades 860 and four second type blades 870, the shape of the entrance aperture may be an octagonal shape.

[0111] In an embodiment, the first type blades 860 and the second type blades 870 may be disposed to at least partially overlap each other in the optical axis direction. The first type blades 860 may at least partially overlap adjacent second type blades 870 .

[0112] In an embodiment, the first type blade 860 and the second type blade 870 may be disposed in the opening 845 of the rotating plate 840. Since the first type blade 860 and the second type blade 870 are disposed in the opening 845 of the rotating plate 840, the first type blade 860 and the second type blade 870 may not overlap with the rotating plate 840. In an embodiment, when the aperture module 800 is viewed in the optical axis direction, the first type blade 860 and the second type blade 870 and the rotating plate 840 may be disposed in areas separated from each other. For example, when the aperture module 800 is viewed in the optical axis direction, the first type blade 860 and the second type blade 870 may be located only in the opening 845 of the rotating plate 840, and may not invade the area outside the opening 845. Since the first type blade 860 and the second type blade 870 are disposed so as not to overlap with the rotating plate 840, the aperture module 800 may be implemented to have a thin thickness.

[0113] In an embodiment, the first type blades 860 and the second type blades 870 may be disposed on the same surface as the rotating plate 840 in the optical axis direction. For example, the upper surface 841 of the rotating plate 840 and the upper surfaces of the first type blades 860 and the second type blades 870 (eg, Figure 6 861 and Figure 7 871) in may be consistent or substantially consistent.

[0114] In an embodiment, at least one of the first type blade 860 and the second type blade 870 may interact with the rotating plate 840 through a connecting rod 880. In an embodiment, at least one of the first type blade 860 and the second type blade 870 may be connected to the rotating plate 840 through a connecting rod 880. One end of the connecting rod 880 may be connected to at least one of the first type blade 860 and the second type blade 870, and the other end of the connecting rod 880 may be connected to the rotating plate 840.

[0115] Reference Figure 6 and Figure 7 In an embodiment, the link 880 may be rotatably coupled to at least one of the first type blade 860 and the second type blade 870 and the rotating plate 840. In an embodiment, the link 880 may include a first hole 884 at one end thereof and a second hole 883 at the other end thereof. The rotating plate 840 may include a first pin 846 corresponding to the first hole 884, and at least one of the first type blade 860 and the second type blade 870 may include second pins 865 and 875 corresponding to the second hole 883, respectively. The first hole 884 and the second hole 883 may be attached to the first pin 846 and the second pins 865 and 875, respectively.

[0116] Reference Figure 4 In an embodiment, the first pin 846 may be disposed in a recessed portion 847 whose height is lower than the upper surface 841 of the rotating plate 840 .

[0117] In an embodiment, the size of the entrance aperture can be adjusted by the interaction of the first type blades 860 and the second type blades 870. The first type blades 860 and the second type blades 870 arranged in the circumferential direction interact together to become closer to or farther from the optical axis, and thus, the size of the entrance aperture can be reduced or increased.

[0118] In an embodiment, the first type blade 860 and the second type blade 870 may interact with the rotating plate 840. When the first type blade 860 and the second type blade 870 move according to the rotation of the rotating plate 840, the size of the incident hole may be adjusted.

[0119] In an embodiment, the first type blade 860 and the second type blade 870 can move in a direction away from or toward the optical axis. In an embodiment, the first type blade 860 and the second type blade 870 can move radially around the optical axis. When the blades 860 and 870 interact with the rotating plate 840, the first type blade 860 and the second type blade 870 can move closer to the optical axis or away from the optical axis at the same time. Therefore, the size of the incident hole defined by the first type blade 860 and the second type blade 870 can be adjusted.

[0120] In an embodiment, the aperture module 800 may include a structure that guides the first type blades 860 and the second type blades 870 to move along a specific path according to the rotation of the rotating plate 840. In an embodiment, the aperture module 800 may further include a guide plate 830 disposed below the first type blades 860 and the second type blades 870. Figure 5 , the guide plate 830 may be disposed on the base 810 , and the blades 860 and 870 may be disposed on the guide plate 830 .

[0121] In an embodiment, the guide plate 830 may be fixedly attached to the base 810. In an embodiment, the base 810 may include a seating surface 811 for the guide plate 830, and a lower surface 832 of the guide plate 830 may be disposed on the seating surface 811 of the base 810.

[0122] In an embodiment, the base 810 may include an opening 816 for light passing through an incident hole defined by the first type blade 860 and the second type blade 870. In an embodiment, the guide plate 830 may have a ring shape.

[0123] In an embodiment, the first type blade 860 and the second type blade 870 and the rotating plate 840 may be disposed on areas of the guide plate 830 that are separated from each other and may not overlap each other. In an embodiment, the inner diameter of the guide plate 830 may be smaller than the inner diameter of the rotating plate 840. In an embodiment, the upper surface 831 of the guide plate 830 may be divided into two areas based on the inner diameter of the rotating plate 840. The rotating plate 840 may be placed on a portion of the guide plate 830 that is larger than the inner diameter of the rotating plate 840. The first type blade 860 and the second type blade 870 may be placed on a portion of the guide plate 830 that is smaller than the inner diameter of the rotating plate 840.

[0124] Reference Figure 4 and Figure 5 , the guide plate 830 may include a protrusion 834 extending toward the first type blade 860 and the second type blade 870. The first type blade 860 and the second type blade 870 may be disposed on the upper surface 831 of the guide plate 830, and the protrusion 834 corresponding to at least one of the first type blade 860 and the second type blade 870 may be provided on the upper surface 831 of the guide plate 830.

[0125] Reference Figure 6 and Figure 7At least one of the first type blade 860 and the second type blade 870 may include guide grooves 869 and 879, respectively, configured to receive at least a portion of the protrusion 834. Since the protrusion 834 has a fixed position relative to the base 810, the movement direction of the first type blade 860 and the second type blade 870 relative to the base 810 may be limited to the direction in which the guide grooves 869 and 879 extend.

[0126] In an embodiment, the first type blade 860 and the second type blade 870 may be linearly movable relative to the guide plate 830. In an embodiment, the guide grooves 869 and 879 and the protrusion 834 may be shaped such that the blades 860 and 870 may be linearly movable relative to the guide plate 830.

[0127] In an embodiment, the guide grooves 869 and 879 may extend linearly, and the protrusion 834 may extend in a direction parallel to the direction in which the guide grooves 869 and 879 extend. For example, the protrusion 834 may have a square column shape extending in a direction parallel to the direction in which the guide grooves 869 and 879 extend, or may have an elliptical column shape including a major axis parallel to the direction in which the guide grooves 869 and 879 extend. In another embodiment, the guide grooves 869 and 879 may extend linearly, and the protrusion 834 may include two or more protrusions aligned in the direction in which the guide grooves 869 and 879 extend.

[0128] In an embodiment, the guide grooves 869 and 879 may extend radially from the optical axis. In an embodiment, the guide grooves 869 and 879 may extend parallel to the radial direction from the rotation center of the rotating plate 840. Therefore, the first type blade 860 and the second type blade 870 may move in a direction toward or away from the optical axis.

[0129] In an embodiment, the first type blade 860 may include a first guide groove 869 that accommodates the protrusion 834. Due to the interaction between the first guide groove 869 and the protrusion 834, the first type blade 860 may move parallel to the direction in which the first guide groove 869 extends. In an embodiment, the first guide groove 869 may extend in a direction toward the optical axis. In an embodiment, the first guide groove 869 may extend in a radial direction from the optical axis. For example, an imaginary extension line of the first guide groove 869 may intersect with the optical axis.

[0130] In an embodiment, the second type blade 870 may include a second guide groove 879 that accommodates the protrusion 834. Due to the interaction between the second guide groove 879 and the protrusion 834, the second type blade 870 may move parallel to the direction in which the second guide groove 879 extends. In an embodiment, the second guide groove 879 may extend in a direction toward the optical axis. In an embodiment, the second guide groove 879 may extend in a radial direction from the optical axis. For example, an imaginary extension line of the second guide groove 879 may intersect with the optical axis.

[0131] Although not shown, in another embodiment, a guide groove may be provided in the guide plate 830, and a protrusion may be provided on the first type blade 860 and the second type blade 870. In this case, the first type blade 860 and the second type blade 870 may move in a direction in which the guide groove provided in the guide plate 830 extends. The guide grooves 869 and 879 provided in the guide plate 830 may extend radially around the optical axis.

[0132] In an embodiment, the first type blade 860 and the second type blade 870 may be arranged to at least partially overlap each other. The first type blade 860 and the second type blade 870 may at least partially overlap each other in the optical axis direction. For example, when the aperture module 800 is viewed in the optical axis direction, the first type blade 860 and the second type blade 870 may be arranged to overlap each other. Since the first type blade 860 and the second type blade 870 are arranged to overlap each other, the aperture module 800 may be implemented to have a thin thickness.

[0133] In an embodiment, the aperture module 800 may include an aperture cover 820. In an embodiment, the aperture cover 820 may form a part of the appearance of the aperture module 800. The aperture cover 820 may protect internal components of the aperture module 800.

[0134] A portion of the aperture cover 820 may be disposed on the rotating plate 840 and the first type blades 860 and the second type blades 870. The aperture cover 820 may restrict the rotating plate 840 and the blades 860 and 870 from moving on a specified plane. For example, the aperture cover 820 may be used to press the rotating plate 840 and / or the first type blades 860 and the second type blades 870 in the optical axis direction so that the rotating plate 840 and / or the first type blades 860 and the second type blades 870 may move in a state adjacent to the upper surface 831 of the guide plate 830. However, in order to smoothly drive the rotating plate 840 and / or the first type blades 860 and the second type blades 870, when the aperture cover 820 is attached to the base 810, a predetermined gap may exist between the rotating plate 840 and / or the first type blades 860 and the second type blades 870 and the aperture cover 820.

[0135] Figure 6 A first type of blades 860 is shown according to an embodiment. Figure 7 A second type of blades 870 is shown according to an embodiment.

[0136] In an embodiment, the first type blade 860 may include a second pin 865 that may be connected to the link 880. In an embodiment, the first type blade 860 may include a recessed portion 866 whose height is lower than that of an upper surface 861 of the first type blade 860, and the second pin 865 may extend from the recessed portion 866. A lower surface 882 of the link 880 may be seated on the recessed portion 866. Therefore, even if the link 880 is attached to overlap with the first type blade 860, the overall thickness of the aperture module 800 may be reduced. For example, when the link 880 is attached to the first type blade 860, the upper surface 881 of the link 880 and the upper surface 861 of the first type blade 860 may be consistent or substantially consistent.

[0137] In an embodiment, the first type blade 860 may include a first guide groove 869 configured to receive at least a portion of the protrusion 834 of the guide plate 830 on the lower surface 862 of the first type blade 860 .

[0138] In an embodiment, the first type blade 860 may include a thin portion 867 having a thin thickness. The thin portion 867 may be defined by surfaces 868a and 868b having a height lower than the upper surface 861 and the lower surface 862 of the first type blade 860. Based on the step portion S, the first type blade 860 may have a thick portion (or a first portion) at a central region thereof, and a thin portion 867 (or a second portion) at an end region thereof.

[0139] In an embodiment, the second type blade 870 may include a second pin 875 that may be connected to the link 880. In an embodiment, the second type blade 870 may include a recessed portion 876 whose height is lower than that of an upper surface 871 of the second type blade 870, and the second pin 875 may extend from the recessed portion 876. A lower surface 882 of the link 880 may be seated on the recessed portion 876. Therefore, even if the link 880 is attached to overlap with the second type blade 870, the overall thickness of the aperture module 800 may be reduced. For example, when the link 880 is attached to the second type blade 870, the upper surface 881 of the link 880 and the upper surface 871 of the second type blade 870 may be consistent or substantially consistent.

[0140] In an embodiment, the second type blade 870 may include a second guide groove 879 configured to receive at least a portion of the protrusion 834 of the guide plate 830 on the lower surface 872 of the second type blade 870 .

[0141] In an embodiment, the second type blade 870 may include a receiving groove 877 at an end region thereof, into which a portion of the first type blade 860 may be inserted. In an embodiment, the thin portion 867 of the first type blade 860 may be received in the receiving groove 877 of the second type blade 870. The thin portion 867 of the first type blade 860 may be located between two surfaces 878a and 878b that each define the receiving groove 877.

[0142] In an embodiment, a portion of the first type blades 860 may be selectively accommodated in the second type blades 870 according to the driving of the aperture. Figures 8 to 10 As the size of the entrance aperture decreases, the overlapping area between the first type blade 860 and the second type blade 870 may increase. As the size of the entrance aperture increases, the overlapping area between the first type blade 860 and the second type blade 870 may decrease. That is, a portion of the thin portion 867 of the first type blade 860 may be selectively accommodated in the accommodation groove 877 of the second type blade 870 according to the size of the entrance aperture.

[0143] In an embodiment, the shape of the step portion S of the first type blade 860 may correspond to the shape of the edge of the second type blade 870. Figure 8 When the size of the incident hole is the minimum size, the edge of the second type blade 870 may contact the step portion S of the adjacent first type blade 860 (eg, be connected to the step portion of the adjacent first type blade 860 ).

[0144] According to an embodiment, the inner side surfaces 863 and 873 of the blades 860 and 870 facing the optical axis may have a flat surface. In an embodiment, the outer side surfaces 864 and 874 of the first type blade 860 and the second type blade 870 facing the rotating plate 840, respectively, may have a curved surface. Fig.10 When the size of the incident hole is the maximum size, the outer side surface 864 of the first type blade 860 and the outer side surface 874 of the second type blade 870 may be adjacent to the inner circumferential surface 843 of the rotating plate 840 , respectively.

[0145] Figure 8 is a plan view of the aperture module 800 when the entrance hole has a minimum size in an embodiment. Fig. 9 is a plan view of the aperture module 800 when the entrance hole has an intermediate size in an embodiment. Fig.10is a plan view of the aperture module 800 when the entrance hole has a maximum size in an embodiment.

[0146] Reference Figures 8 to 10 In an embodiment, the aperture module 800 may provide an entrance aperture having various sizes. The entrance aperture may be defined by the side surfaces of the first type blade 860 and the second type blade 870 in the optical axis direction, and in an embodiment, the size of the entrance aperture may be continuously changed according to the movement of the moving part 850.

[0147] For example, when the moving portion 850 moves to the right, the protruding portion 834 may rotate the rotating plate 840 in a counterclockwise direction. When the rotating plate 840 rotates, the first type blade 860 and the second type blade 870 may move away from the optical axis, and the size of the incident aperture may be expanded. As another example, when the moving portion 850 moves to the left, the rotating plate 840 may rotate in a clockwise direction, and the first type blade 860 and the second type blade 870 may move toward the optical axis. Therefore, the size of the incident aperture may be reduced.

[0148] In an embodiment, the protruding portion 851 of the moving portion 850 may be located between the first point P1 and the second point P2. The moving portion 850 may be positioned at any point Pa between the first point P1 and the second point P2 by the electromagnetic force acting on the magnet 890.

[0149] When the moving part 850 is located at the first point P1, the aperture module 800 may provide an incident hole 801 having a minimum size. When the moving part 850 is located at the second point P2, the aperture module 800 may provide an incident hole 803 having a maximum size.

[0150] In an embodiment, the position of the moving part 850 and the size of the incident hole may correspond one to one. When the moving part 850 moves from the first point P1 to the second point P2, the size of the incident hole may increase continuously. Conversely, when the moving part 850 moves from the second point P2 to the first point P1, the size of the incident hole may decrease continuously. For example, when the moving part 850 is located between the first point P1 and the second point P2, the aperture module 800 may provide an incident hole 802 with an intermediate size.

[0151] When the moving part 850 moves from the first point P1 to the second point P2, the first type blades 860 and the second type blades 870 move in unison, and thus the shape of the entrance aperture can remain constant. For example, the shape of the entrance aperture can remain a regular hexagon regardless of the size of the entrance aperture.

[0152] In a camera module according to an embodiment disclosed in the present application, the amount of incident light can be selectively changed by an aperture module, and even if the aperture module is installed in the camera module, the performance of the autofocus function can be prevented from being deteriorated, and the increase in weight of the camera module caused by the inclusion of the aperture module can be significantly reduced.

[0153] Additionally, the aperture module is able to consistently achieve precise aperture diameters while reducing current usage.

[0154] In addition, according to the embodiments disclosed in the present application, it is possible to prevent the thickness of the aperture module from increasing while forming an incident hole using a plurality of blades.

[0155] Although specific examples have been shown and described above, it will be apparent after understanding the present disclosure that various changes in form and detail may be made to these examples without departing from the spirit and scope of the claims and their equivalents. The examples described in this application should be understood in a descriptive sense only, and not for limiting purposes. The description of the features or aspects in each example should be understood to be applicable to similar features or aspects in other examples. If the described techniques are performed in a different order, and / or if the components in the described systems, architectures, devices, or circuits are combined in different ways and / or replaced or supplemented by other components or their equivalents, appropriate results can still be achieved. Therefore, the scope of the present disclosure will not be limited by specific embodiments, but by the claims and their equivalents, and all variations within the scope of the claims and their equivalents should be understood to be included in the present disclosure.

Claims

1. Aperture module, including: Pedestal; A rotating plate, rotatably disposed on the base; a blade configured to form an entrance aperture and to move by the rotation of the rotating plate to change the size of the entrance aperture; as well as an aperture cover, a portion of which is disposed on the rotating plate and the blades, wherein the blades are arranged in openings arranged in the rotating plate, and The blades and the rotating plate are arranged at the same position in the optical axis direction.

2. The aperture module according to claim 1, wherein: The blades are arranged to at least partially overlap each other in the optical axis direction.

3. The aperture module according to claim 1, wherein: The blades include first-type blades and second-type blades, the second-type blades at least partially overlapping the first-type blades in the optical axis direction, and The first type blades and the second type blades are arranged alternately in the circumferential direction.

4. The aperture module according to claim 3, wherein: The first type blades include two or more first type blades, and the second type blades include two or more second type blades.

5. The aperture module according to claim 3, wherein: The first type of blade comprises a first portion and a second portion thinner than the first portion, and At least a portion of the second portion is configured to be selectively received in a receiving portion formed in the second type blade. 6 . The aperture module of claim 1 , further comprising a link connected to at least one of the blades and the rotating plate.

7. The aperture module according to claim 6, wherein: The connecting rod comprises a first hole and a second hole respectively disposed at one end of the connecting rod and the other end of the connecting rod, wherein the rotating plate comprises a first pin corresponding to the first hole, and Wherein, at least one of the blades comprises a second pin corresponding to the second hole.

8. The aperture module according to claim 7, wherein: The rotating plate includes a recessed portion, the height of the recessed portion being lower than the height of the periphery of the rotating plate, and Wherein, the first pin is arranged in the recessed portion.

9. The aperture module according to claim 7, wherein: At least one of the blades includes a recessed portion having a height lower than a height of a periphery of the blade, and The second pin is disposed in the recessed portion. 10 . The aperture module according to claim 1 , further comprising a guide plate fixedly disposed on the base and forming a seating surface at least partially in contact with the rotating plate and the blades.

11. The aperture module according to claim 10, wherein: The guide plate includes a protruding portion on the seating surface corresponding to at least one of the blades, and Wherein, at least one of the blades comprises a guide slot configured to receive the protruding portion.

12. The aperture module according to claim 11, wherein: The guide groove extends in the radial direction of the rotation plate in the at least one of the blades.

13. The aperture module according to claim 10, wherein: At least one of the blades includes a protruding portion, and Wherein, the guide plate includes a guide groove, which is disposed on the seating surface and configured to accommodate the protruding portion.

14. The aperture module according to claim 6, wherein: The link is rotatably coupled to the at least one of the blades and the rotating plate.

15. The aperture module according to claim 6, wherein: The blades include two or more first-type blades and two or more second-type blades, the two or more second-type blades respectively at least partially overlapping the two or more first-type blades in the optical axis direction, and The first type blades and the second type blades are arranged alternately in the circumferential direction.

16. The aperture module according to claim 6, wherein: The blades include a first blade and a second blade, the second blade at least partially overlapping the first blade in the optical axis direction, and Wherein, the end portion of the second blade includes a recess configured to receive the end portion of the first blade.

17. Camera module, including: shell; a lens module disposed in the housing and comprising at least one lens having an optical axis; as well as An aperture module is arranged above the lens module in the direction of the optical axis and comprises: Pedestal; a rotating plate rotatably disposed on the base and comprising an annular member surrounding an opening through which the optical axis extends; and blades configured to form a hole through which light incident to the aperture module passes, and the blades configured to move by rotation of the rotating plate to change a size of the hole; and an aperture cover, a portion of which is disposed on the rotating plate and the blades, The blade is disposed in the opening and the blade and the rotating plate are disposed at the same position in the direction of the optical axis.

18. The camera module according to claim 17, further comprising: A guide plate forming a placement surface, on which the blades and the rotating plate are arranged; as well as Wherein, the guide plate is configured to guide the movement of the blade in a radial direction relative to the optical axis.

19. The camera module of claim 18, further comprising a rotatable link connecting the rotating plate to each of the blades.

20. The camera module according to claim 17, wherein: The blades include a first blade and a second blade, the second blade at least partially overlapping the first blade in the direction of the optical axis, and Wherein, the end portion of the second blade includes a recess configured to receive the end portion of the first blade.

21. The camera module according to claim 20, wherein: A surface of the first blade includes a step portion configured to meet an end portion of the second blade.

22. A portable electronic device comprising the camera module according to claim 17.

Images