Diaphragm module and camera module including the same
阅读说明:本技术 光阑模块及包括该光阑模块的相机模块 (Diaphragm module and camera module including the same ) 是由 郑凤元 李敬勳 徐普盛 尹永复 李重锡 于 2019-02-27 设计创作,主要内容包括:本公开提供一种光阑模块及包括该光阑模块的相机模块。所述相机模块包括:壳体;镜头模块,包括磁轭并且设置在所述壳体中;光阑模块,包括多个叶片并且被构造为利用所述多个叶片形成具有不同尺寸的N个光圈,N是大于或等于2的整数,所述光阑模块在所述镜头模块的上方设置在所述壳体中;以及光阑驱动器,包括驱动线圈和磁体单元,所述磁体单元被构造为在线性方向上是可往复运动的并且包括与所述驱动线圈和所述磁轭相对的驱动磁体,其中,所述磁轭被构造为使所述磁体单元能够固定在沿所述磁体单元的运动路径的N个位置处。(The present disclosure provides a diaphragm module and a camera module including the same. The camera module includes: a housing; a lens module including a yoke and disposed in the housing; a diaphragm module including a plurality of blades and configured to form N apertures having different sizes using the plurality of blades, N being an integer greater than or equal to 2, the diaphragm module being disposed in the housing above the lens module; and a diaphragm driver including a driving coil and a magnet unit configured to be reciprocatable in a linear direction and including a driving magnet opposing the driving coil and the yoke, wherein the yoke is configured to enable the magnet unit to be fixed at N positions along a movement path of the magnet unit.)
1. A camera module, comprising:
a housing;
a lens module including a yoke and disposed in the housing;
a diaphragm module including a plurality of blades and configured to form N apertures having different sizes using the plurality of blades; and
a diaphragm driver, comprising:
a drive coil; and
a magnet unit configured to be reciprocatable in a linear direction and including a driving magnet opposed to the driving coil and the yoke,
wherein the yoke is configured to enable the magnet unit to be fixed at N positions along a movement path of the magnet unit, wherein N is an integer.
2. The camera module according to claim 1, wherein the yoke includes N extensions opposing the driving magnet at the N positions of the magnet unit, and
a width of each of the N extending portions in an optical axis direction is larger than a width of other portions of the yoke in the optical axis direction that are not opposed to the driving magnets at the N positions of the magnet unit.
3. The camera module according to claim 1, wherein the yoke comprises N yokes arranged at intervals along the movement path of the magnet unit.
4. A camera module according to claim 3, wherein the N yokes are arranged along the movement path of the magnet unit parallel to the direction of movement of the magnet unit.
5. The camera module of claim 1, wherein the yoke includes N-2 extensions, the N-2 extensions opposing the drive magnet at N-2 of the N locations between opposing end locations of the N locations,
a width in an optical axis direction of each of the N-2 extensions is larger than a width in the optical axis direction of other portions of the yoke that are not opposed to the drive magnets at the N-2 positions, and
the diaphragm module further includes two holding yokes respectively provided at opposite ends of the movement path of the magnet unit to face a side surface or a bottom surface of the driving magnet at the opposite end positions of the N positions.
6. The camera module of claim 5, wherein the diaphragm module further comprises:
a base; and
a movement guide unit protruding from the base in the optical axis direction,
wherein the magnet unit is movably mounted on the movement guide unit, and
the holding yokes are respectively provided at opposite ends of the movement guide unit.
7. The camera module according to claim 1, wherein the diaphragm module is further configured to form three apertures having different sizes with the plurality of blades, and
the size of the aperture changes in the order of medium aperture, maximum aperture, and minimum aperture as the magnet unit moves in one direction along the movement path of the magnet unit.
8. The camera module according to claim 1, wherein the yoke has a structure that enables the magnet unit to be fixed at the N positions along the movement path of the magnet unit by an attractive force between the yoke and the driving magnet.
9. A diaphragm module comprising:
a base;
a plurality of blades disposed above the base and overlapping each other, the plurality of blades configured to form N apertures having different sizes;
a magnet unit provided on the base and configured to be movable in a direction perpendicular to an optical axis direction, the magnet unit including a driving magnet; and
a yoke configured to provide N positions at which the magnet unit is fixed along a movement path of the magnet unit by an attractive force between the yoke and the driving magnet, wherein N is an integer.
10. The diaphragm module of claim 9, wherein the yoke comprises N yokes arranged at intervals along the movement path of the magnet unit.
11. The diaphragm module of claim 9, wherein the yoke comprises N-2 extensions, the N-2 extensions opposing the drive magnet at N-2 of the N positions between opposing end positions of the N positions,
a width in the optical axis direction of each of the N-2 extensions is larger than a width in the optical axis direction of the other portion of the yoke that is not opposed to the drive magnet at the N-2 positions, and
the yoke further includes two first holding units protruding from opposite end portions of the yoke in directions perpendicular to the optical axis direction and a moving direction of the magnet unit, respectively, to face side surfaces of the driving magnet at the opposite end portions of the N positions, respectively.
12. The diaphragm module of claim 9, wherein the yoke comprises N-2 extensions, the N-2 extensions opposing the drive magnet at N-2 of the N positions between two end positions of the N positions,
a width in an optical axis direction of each of the N-2 extensions is larger than a width in the optical axis direction of other portions of the yoke that are not opposed to the drive magnets at the N-2 positions, and
the yoke further includes two second holding units respectively protruding from opposite end portions of the yoke in the optical axis direction to be opposed to the driving magnet at the opposite end portions of the N positions.
13. The diaphragm module of claim 12, wherein the yoke further comprises two third holding units extending from ends of the two second holding units, respectively, to face a bottom surface of the driving magnet at the opposite end positions of the N positions.
14. A camera module, comprising:
a lens module; and
a diaphragm module fixed to an upper portion of the lens module, the diaphragm module including:
a base;
a plurality of blades each including N holes having different sizes and communicating with each other; and
a driving magnet provided on the base and configured to be movable in a direction perpendicular to an optical axis direction,
wherein the plurality of blades are configured to rotationally move in response to the linear movement of the driving magnet to form N apertures having different sizes, wherein N is an integer.
15. The camera module of claim 14, wherein the plurality of blades is two blades.
16. The camera module of claim 14, further comprising a position sensor configured to sense a position of the drive magnet.
17. The camera module of claim 14, further comprising a yoke opposing the drive magnet,
wherein the yoke has a structure that enables the driving magnet to be fixed at N positions along a movement path of the driving magnet by an attractive force between the yoke and the driving magnet.
18. The camera module of claim 14, further comprising a gap spacer including a through hole having a center aligned with a center of the N apertures formed by the plurality of blades,
wherein the through hole has a size smaller than a size of a maximum aperture formed by the plurality of blades and larger than a size of a next largest aperture formed by the plurality of blades.
19. A diaphragm module comprising:
a drive coil configured to generate a magnetic field;
a magnet unit comprising a drive magnet and configured to be movable relative to the drive coil along a linear path by interaction between a magnetic field of the drive magnet and the magnetic field generated by the drive coil;
a yoke configured to hold the magnet unit at N positions along the linear path; and
a plurality of blades configured to rotate in response to movement of the magnet unit along the linear path to form N apertures having different sizes, the N apertures corresponding to different ones of the N positions, respectively, wherein N is an integer.
20. The diaphragm module of claim 19, further comprising a base,
wherein the magnet unit is mounted on the base such that the magnet unit is movable relative to the base along the linear path,
the plurality of blades mounted on the base such that the plurality of blades are rotatable relative to the base,
the base is configured to be coupled to a lens module mounted in a housing of a camera module such that the base is movable with the lens module relative to the housing,
the drive coil is configured to be mounted on the housing, and
the yoke is configured to be mounted on the lens module.
21. The diaphragm module of claim 19, further comprising a base,
wherein the magnet unit is mounted on the base such that the magnet unit is movable relative to the base along the linear path,
the plurality of blades mounted on the base such that the plurality of blades are rotatable relative to the base,
the yoke is mounted on the base portion,
the base is configured to be mounted in a housing of a camera module such that the base is movable relative to the housing, an
The drive coil is configured to be mounted on the housing.
22. The diaphragm module of claim 21, wherein the base is further configured to be coupled to a lens module of the camera module such that the base is movable with the lens module relative to the housing.
Technical Field
The present application relates to a diaphragm module and a camera module including the same.
Background
For some time, camera modules have become a standard feature of portable electronic devices such as smartphones, tablet PCs and laptop computers. A typical digital camera is equipped with a mechanical stop to change the amount of incident light reaching the image sensor according to a shooting environment. However, since a camera module used in a small product such as a portable electronic device has structural features and space limitations, it is difficult for the camera module to be equipped with a separate diaphragm.
Since various components of the diaphragm module required to drive the diaphragm cause an increase in weight of the camera module, an autofocus function of the camera module may be deteriorated. Further, when the diaphragm module itself includes a power connector (such as a coil for driving the diaphragm), during auto-focusing, the power connector may catch something during vertical movement of the lens.
Further, since the diaphragm module having various apertures should be installed in a narrow space, it is difficult to precisely fix the position of the driver setting the apertures. Accordingly, an accurate aperture cannot be realized.
Disclosure of Invention
This summary is provided to introduce a selection of concepts in a simplified form that are further described below in the 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.
In one general aspect, a camera module includes: a housing; a lens module including a yoke and disposed in the housing; a diaphragm module including a plurality of blades and configured to form N apertures having different sizes using the plurality of blades; and a diaphragm driver including a driving coil and a magnet unit configured to be reciprocatable in a linear direction and including a driving magnet opposing the driving coil and the yoke, wherein the yoke is configured to enable the magnet unit to be fixed at N positions along a movement path of the magnet unit, where N is an integer.
The yoke may include N extending portions that oppose the driving magnet at the N positions of the magnet unit, and a width in an optical axis direction of each of the N extending portions may be larger than a width in the optical axis direction of other portions of the yoke that do not oppose the driving magnet at the N positions of the magnet unit.
The yoke may include N yokes arranged at intervals along the moving path of the magnet unit.
The N yokes may be arranged in parallel to a direction in which the magnet unit moves along the movement path of the magnet unit.
The yoke may include N-2 extensions that are opposed to the driving magnet at N-2 positions among the N positions at opposite end positions of the N positions, each of the N-2 extensions may have a width in an optical axis direction greater than that of other portions of the yoke that are not opposed to the driving magnet at the N-2 positions, and the diaphragm module may further include two holding yokes that are respectively disposed at opposite ends of the movement path of the magnet unit to face a side surface or a bottom surface of the driving magnet at the opposite end positions of the N positions.
The diaphragm module may further include: a base; and a movement guide unit protruding from the base in the optical axis direction, wherein the magnet unit may be movably mounted on the movement guide unit, and the holding yokes may be disposed at opposite ends of the movement guide unit, respectively.
The diaphragm module may be further configured to form three apertures having different sizes using the plurality of blades, and the sizes of the apertures may be changed in the order of a medium aperture, a maximum aperture, and a minimum aperture as the magnet unit moves in one direction along the movement path of the magnet unit.
The yoke may have a structure that enables the magnet unit to be fixed at the N positions along the movement path of the magnet unit by an attractive force between the yoke and the driving magnet.
In another general aspect, a diaphragm module includes: a base; a plurality of blades disposed above the base and overlapping each other, the plurality of blades configured to form N apertures having different sizes; a magnet unit provided on the base and configured to be movable in a direction perpendicular to an optical axis direction, the magnet unit including a driving magnet; and a yoke configured to provide N positions at which the magnet unit is fixed along a movement path of the magnet unit by an attractive force between the yoke and the driving magnet, wherein N is an integer.
The yoke may include N yokes arranged at intervals along the moving path of the magnet unit.
The yoke may include N-2 extending portions that are opposed to the driving magnet at N-2 positions among the N positions at opposite end positions of the N positions, a width of each of the N-2 extending portions in the optical axis direction may be larger than a width of other portions of the yoke that are not opposed to the driving magnet at the N-2 positions in the optical axis direction, and the yoke may further include two first holding units that protrude from opposite ends of the yoke in directions perpendicular to the optical axis direction and a moving direction of the magnet unit, respectively, to face side surfaces of the driving magnet at the opposite end positions of the N positions, respectively.
The yoke may include N-2 extending portions that are opposed to the driving magnet at N-2 positions among two end positions of the N positions, each of the N-2 extending portions may have a width in an optical axis direction larger than a width in the optical axis direction of other portions of the yoke that are not opposed to the driving magnet at the N-2 positions, and the yoke may further include two second holding units that protrude from opposed ends of the yoke in the optical axis direction, respectively, to be opposed to the driving magnet at the opposed end positions of the N positions.
The yoke may further include two third holding units respectively extending from ends of the two second holding units to face the bottom surface of the driving magnet at the opposite end positions of the N positions.
In another general aspect, a camera module includes: a lens module; and a diaphragm module fixed to an upper portion of the lens module, the diaphragm module including: a base; a plurality of blades each including N holes having different sizes and communicating with each other; and a driving magnet disposed on the base and configured to be movable in a direction perpendicular to an optical axis direction, wherein the plurality of blades are configured to rotationally move in response to a linear movement of the driving magnet to form N apertures having different sizes, wherein N is an integer.
The plurality of blades may be two blades.
The camera module may further include a position sensor configured to sense a position of the driving magnet.
The camera module may further include a yoke opposite to the driving magnet, wherein the yoke may have a structure that enables the driving magnet to be fixed at N positions along a movement path of the driving magnet by an attractive force between the yoke and the driving magnet.
The camera module may further include a gap spacer including a through hole having a center aligned with a center of the N apertures formed by the plurality of blades, wherein the through hole may have a size smaller than a size of a largest aperture formed by the plurality of blades and larger than a size of a next largest aperture formed by the plurality of blades.
In another general aspect, a diaphragm module includes: a drive coil configured to generate a magnetic field; a magnet unit comprising a drive magnet and configured to be movable relative to the drive coil along a linear path by interaction between a magnetic field of the drive magnet and the magnetic field generated by the drive coil; a yoke configured to hold the magnet unit at N positions along the linear path; and a plurality of blades configured to rotate in response to movement of the magnet unit along the linear path to form N apertures having different sizes, the N apertures corresponding to different ones of the N positions, respectively, where N is an integer.
The diaphragm module may further include a base, wherein the magnet unit may be mounted on the base such that the magnet unit is movable relative to the base along the linear path, the plurality of blades may be mounted on the base such that the plurality of blades are rotatable relative to the base, the base may be configured to be coupled to a lens module mounted in a housing of a camera module such that the base is movable relative to the housing together with the lens module, the driving coil may be configured to be mounted on the housing, and the yoke may be configured to be mounted on the lens module.
The diaphragm module may further include a base, wherein the magnet unit may be mounted on the base such that the magnet unit is movable relative to the base along the linear path, the plurality of blades may be mounted on the base such that the plurality of blades are rotatable relative to the base, the yoke may be mounted on the base, the base may be configured to be mounted in a housing of a camera module such that the base is movable relative to the housing, and the driving coil may be configured to be mounted on the housing.
The base may also be configured to be coupled to a lens module of the camera module such that the base is movable with the lens module relative to the housing.
Other features and aspects will be apparent from the following detailed description, the accompanying drawings, and the claims.
Drawings
Fig. 1 is a perspective view of an example of a camera module.
Fig. 2 is an exploded perspective view of the camera module of fig. 1.
Fig. 3 is a partial perspective view of the camera module of fig. 1.
Fig. 4 is an exploded perspective view of an example of a diaphragm module.
Fig. 5A to 5C are plan views showing an example of how the diaphragm module of fig. 4 is driven to change the size of the aperture.
Fig. 6 to 8 are diagrams illustrating an example of a yoke of the diaphragm module of fig. 4.
Fig. 9 is an exploded perspective view of another example of the diaphragm module.
Fig. 10 and 11 are diagrams illustrating an example of a yoke of the diaphragm module of fig. 9.
Like reference numerals refer to like elements throughout the drawings and detailed description. The figures may not be drawn to scale and the relative sizes, proportions and depictions of the elements in the figures may be exaggerated for clarity, illustration and convenience.
Detailed Description
The following detailed description is provided to assist the reader in obtaining a thorough understanding of the methods, devices, and/or systems described herein. However, various alternatives, modifications, and equivalents of the methods, apparatus, and/or systems described herein will be apparent to those skilled in the art in view of the disclosure of the present application. For example, the order of operations described herein is merely an example, and is not limited to the order set forth herein, but rather, variations may be made in addition to operations which must occur in a particular order, as will be apparent upon understanding the disclosure of the present application. Moreover, descriptions of features known in the art may be omitted for the sake of clarity and conciseness.
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 have been provided merely to illustrate some of the many possible ways to implement the methods, devices, and/or systems described herein that will be apparent after understanding the disclosure of the present application.
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 can be directly on, "connected to or" coupled to the other element or one or more other elements may be present therebetween. In contrast, when an element is referred to as being "directly on," "directly connected to" or "directly coupled to" another element, there may be no intervening elements present.
Although terms such as "first", "second", and "third" may be used herein to describe various elements, components, regions, layers or sections, these elements, components, regions, layers or sections are not limited by these terms. Rather, these terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section discussed in the examples described herein could be termed a second element, component, region, layer or section without departing from the teachings of the examples.
Spatially relative terms, such as "above … …," "upper," "below … …," and "lower," may be used herein for ease of description to describe one element's relationship to another element as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "upper" relative to another element would then be "below" or "lower" relative to the other element. Thus, the term "above … …" includes both an orientation of "above … …" and "below … …" depending on the spatial orientation of the device. The device may be otherwise oriented (e.g., rotated 90 degrees or at other orientations) and the spatially relative terms used herein interpreted accordingly.
The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of the disclosure. The singular is intended to include the plural unless the context clearly dictates otherwise. The terms "comprises," "comprising," and "having" specify the presence of stated features, quantities, operations, elements, components, 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.
Variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, may occur. Thus, the examples described herein are not limited to the particular shapes shown in the figures, but include variations in shapes that occur during manufacturing.
The features of the examples described herein may be combined in various ways as will be apparent after understanding the disclosure of the present application. Further, while the examples described herein have various configurations, other configurations are possible as will be apparent after understanding the disclosure of the present application.
Examples of the camera module described herein may be installed in portable electronic devices such as mobile communication terminals, smart phones, and tablet PCs.
Fig. 1 is a perspective view of an example of a camera module. Figure 2 is an exploded perspective view of the camera module of figure 1,
fig. 3 is a partial perspective view of the camera module of fig. 1.
Referring to fig. 1 to 3, the
The lens module 200 includes: a lens barrel 210 including a plurality of lenses configured to capture an image of a subject; and a holder 220 configured to hold the lens barrel 210. A plurality of lenses are disposed inside the lens barrel 210. The lens module 200 is accommodated in the carrier 300.
The lens module 200 is configured to be movable in the optical axis direction to perform auto-focusing. In the example shown in fig. 2, the lens module 200 is moved in the optical axis direction together with the carrier 300 by the autofocus unit.
The automatic focusing unit includes: a magnet 710 configured to generate a driving force in an optical axis direction; and a coil (AF drive coil) 730. The autofocus unit further includes a position sensor 750 (e.g., a hall sensor) to sense the optical axis direction position of the lens module 200 by sensing the optical axis direction position of the carrier 300 accommodating the lens module 200.
The magnet 710 is mounted on the carrier 300. In the example shown in fig. 2, the magnet 710 is mounted on one surface of the carrier 300.
The coil 730 and the position sensor 750 are mounted in the
The magnet 710 is a movable member mounted on the carrier 300 to move in the optical axis direction together with the carrier 300, and the coil 730 and the position sensor 750 are fixed members fixed to the
When power is applied to the coil 730, the coil 730 generates a magnetic field, the carrier 300 moves in the optical axis direction by the interaction between the magnetic field of the magnet 710 and the magnetic field generated by the coil 730, and the position sensor 750 senses the optical axis direction position of the carrier 300.
Since the lens module 200 is accommodated in the carrier 300, the lens module 200 moves in the optical axis direction together with the carrier 300 by the movement of the carrier 300.
When the carrier 300 moves, the rolling members B provided between the carrier 300 and the
Rolling members B are disposed at both sides of the magnet 710 and the coil 730.
Although not shown in fig. 2, the yoke may be mounted on the board 900. For example, the yoke may be mounted on the plate 900 to face the magnet 710 in such a manner that the coil 730 is interposed between the yoke and the magnet 710.
An attractive force acts between the yoke and the magnet 710 in a direction perpendicular to the optical axis direction.
Accordingly, the rolling members B may be maintained in a state of contact with the carrier 300 and the
The yoke serves to concentrate the magnetic force of the magnet 710. Therefore, generation of leakage magnetic flux is prevented.
The yoke and the magnet 710 form a magnetic circuit.
The lens module 200 moves in a first direction perpendicular to the optical axis and a second direction perpendicular to the optical axis and the first direction to correct an image blur caused by hand shake generated by a hand of a user when capturing an image.
The shake correction unit compensates for shake caused by hand shake when capturing an image by applying a relative displacement corresponding to the shake to the lens module 200.
The guide unit 400 is accommodated in the carrier 300 and disposed at a position in the optical axis direction. The holder 220 is placed on the guide unit 400. The ball members C are provided to function as rolling bearings between the carrier 300 and the guide unit 400 in the optical axis direction and between the guide unit 400 and the holder 220 in the optical axis direction.
The guide unit 400 guides the lens module 200 when the lens module 200 moves in a first direction and a second direction perpendicular to the optical axis.
In the example shown in fig. 2, the lens module 200 is configured to move relative to the guide unit 400 in a first direction, and the guide unit 400 and the lens module 200 are configured to move together within the carrier 300 in a second direction.
The shake correction unit includes: a plurality of magnets 810a and 830a configured to generate a driving force for shake correction; and a plurality of
Among the plurality of magnets 810a and 830a and the plurality of
A plurality of magnets 810a and 830a are mounted on the lens module 200, and a plurality of
The plurality of magnets 810a and 830a are movable members that move in the first and second directions together with the lens module 200, and the plurality of
The ball member C is provided to support the guide unit 400 and the lens module 200. The ball member C guides the guide unit 400 and the lens module 200 during shake correction.
The ball members C are disposed between the carrier 300 and the guide unit 400, between the carrier 300 and the lens module 200, and between the guide unit 400 and the lens module 200.
When the driving force is generated in the first direction, the ball member C disposed between the lens module 200 and the guide unit 400 rolls in the first direction. Accordingly, the ball member C guides the movement of the lens module 200 in the first direction.
When the driving force is generated in the second direction, the ball member C disposed between the guide unit 400 and the carrier 300 and the ball member C disposed between the carrier 300 and the lens module 200 roll in the second direction. Accordingly, the ball member C guides the lens module 200 and the guide unit 400 to move together in the second direction.
The lens module 200 and the carrier 300 are accommodated in the
Although not shown in fig. 2, a Printed Circuit Board (PCB) on which the image sensor is mounted is disposed below the
The
As an example, the
Since not only the camera module but also other various electronic components are mounted in the portable electronic device, the
The
The
As an example, the
Fig. 4 is an exploded perspective view of an example of a diaphragm module, and fig. 5A to 5C are plan views showing an example of how the diaphragm module of fig. 4 is driven to change the size of an aperture.
The
The
The
The
Referring to fig. 4, the
The
The
The first and second guide holes 533 and 543 have a circular shape, and the third and fourth guide holes 535 and 545 have an elongated shape and are inclined in the moving direction of the
The linear motion of the
The first and second through
The first and second through
The
Further, the first through
A portion of the first through
Accordingly, light is incident through one of the plurality of apertures according to a photographing environment.
In the example shown in fig. 4, the maximum size of the aperture formed by the first and
For ease of description, the
Accordingly, the aperture of the maximum size achieved by the
Referring to fig. 5A, when the
Referring to fig. 5B, when the
Referring to fig. 5C, when the
The diaphragm driver includes: a
The examples shown in fig. 4 and 5A-5C use a closed loop control scheme to sense and feedback the position of the
The
Since the
For example, since the
Further, since the
As a result, the autofocus function is prevented from deteriorating.
A
The
The
The
When only the
The
The
The
The third and fourth guide holes 535 and 545 are formed to be inclined in the direction in which the
Accordingly, when the
In the example shown in fig. 4, the
The lens module 200 (more specifically, the holder 220) includes a yoke 225 (see fig. 2) disposed opposite to the
Due to the attractive force between the yoke 225 and the
The
As described above, when the
Fig. 6 to 8 are diagrams illustrating an example of a yoke of the diaphragm module of fig. 4.
For example, as shown in fig. 6, the yoke 225 includes three (N) extensions 225a, 225b, and 225c having a width wider than other portions of the yoke 225 in the optical axis direction, so that the
Alternatively, as shown in fig. 7, the
Alternatively, as shown in FIG. 8, one (N-2)
Fig. 9 is an exploded perspective view of another example of the diaphragm module.
Referring to fig. 9, the
When the
Fig. 10 and 11 are diagrams illustrating an example of a yoke of the diaphragm module of fig. 9.
As shown in fig. 10, the
Alternatively, as shown in fig. 11, the yoke 518 includes one (N-2) extension portion 518a and two second holding units 518b and 518c, which are disposed such that the
Further, two third holding units 518d and 518e are additionally provided. Two third holding units 518d and 518e extend from the two second holding units 518b and 518c to face the bottom surface of the
The above-described examples of the diaphragm module enable the camera module to selectively change the amount of incident light passing through the diaphragm module when the diaphragm module is mounted in the camera module, and prevent the autofocus function from deteriorating. Furthermore, the weight increase caused by the use of the diaphragm module can be significantly reduced.
In the above-described example of the diaphragm module, even when the diaphragm module is mounted in the camera module, the weight increase of the driver is significantly reduced to prevent the auto-focusing and hand-shake correction functions from deteriorating.
Further, the above-described examples of the diaphragm module accurately implement various apertures.
While the present disclosure includes specific examples, it will be apparent, upon an understanding of the present disclosure, that various changes in form and detail may be made in these examples without departing from the spirit and scope of the claims and their equivalents. The examples described herein are to be considered merely as illustrative and not for purposes of limitation. The description of features or aspects in each example is deemed applicable to similar features or aspects in other examples. Suitable results may be obtained if the described techniques are performed in a different order and/or if components in the described systems, architectures, devices, or circuits are combined in a different manner and/or replaced or supplemented by other components or their equivalents. Therefore, the scope of the present disclosure is defined not by the detailed description but by the claims and their equivalents, and all changes within the scope of the claims and their equivalents are to be construed as being included in the present disclosure.
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