阅读说明：本技术 光圈组件、摄像模组和电子装置 (Aperture assembly, camera module and electronic device ) 是由 郭侲圻 游琮伟 杨承修 蔡振宏 谢泽余 于 2020-12-23 设计创作，主要内容包括：本发明公开了一种光圈组件、摄像模组和电子装置,光圈组件用于摄像模组,摄像模组具有光轴,光圈组件包括驱动结构和光圈结构,驱动结构包括活动部和固定部,活动部设有绕光轴对称布置的磁性件,固定部设有绕光轴对称布置的线圈,线圈包括第一段,第一段沿围绕光轴形成的径向方向延伸,磁性件对应第一段设置,光圈结构包括至少两个叶片,至少两个叶片绕光轴设置,至少两个叶片连接活动部,其中,在线圈通电的情况下,第一段用于产生对磁性件的推力,使得磁性件带动活动部绕光轴转动以驱动至少两个叶片转动并形成光圈。上述光圈组件,在对焦时不会产生明显倾斜而导致影像模糊,同时不容易增加摄像模组的总高,易于实现小型化。(The invention discloses an aperture assembly, a camera module and an electronic device, wherein the aperture assembly is used for the camera module, the camera module is provided with an optical axis, the aperture assembly comprises a driving structure and an aperture structure, the driving structure comprises a movable part and a fixed part, the movable part is provided with magnetic parts symmetrically arranged around the optical axis, the fixed part is provided with coils symmetrically arranged around the optical axis, each coil comprises a first section, each first section extends along the radial direction formed around the optical axis, each magnetic part is arranged corresponding to each first section, the aperture structure comprises at least two blades, the at least two blades are arranged around the optical axis, and the at least two blades are connected with the movable part, wherein under the condition that the coils are electrified, the first sections are used for generating thrust on the magnetic parts, so that the magnetic parts drive the movable part to rotate around the optical axis to drive the. Above-mentioned light ring subassembly can not produce obvious slope and lead to the image fuzzy when focusing, is difficult to increase the overall height of the module of making a video recording simultaneously, easily realizes the miniaturization.)

1. The utility model provides a light ring subassembly for the module of making a video recording, the module of making a video recording has the optical axis, its characterized in that, light ring subassembly includes:

the driving structure comprises a movable part and a fixed part, the movable part is provided with magnetic parts symmetrically arranged around the optical axis, the fixed part is provided with coils symmetrically arranged around the optical axis, each coil comprises a first section, the first section extends along the radial direction formed by surrounding the optical axis, and the magnetic parts are arranged corresponding to the first sections; and

an aperture structure comprising at least two blades disposed about the optical axis, the at least two blades connected to the movable portion;

under the condition that the coil is electrified, the first section is used for generating thrust on the magnetic part, so that the magnetic part drives the movable part to rotate around the optical axis to drive the at least two blades to rotate and form an aperture.

2. The iris assembly of claim 1, wherein the iris structure includes a limiting blade for defining a moving space of the at least two blades.

3. The diaphragm assembly of claim 1, wherein the diaphragm assembly comprises a ball, the fixed portion comprises a first stop portion, the movable portion comprises a second stop portion, and the first stop portion and the second stop portion together define a stop space for the ball to roll.

4. The diaphragm assembly according to claim 3, wherein the first position-limiting portions are provided in plural numbers symmetrically around the optical axis on the fixed portion, the second position-limiting portions are provided in plural numbers symmetrically around the optical axis on the movable portion, and one second position-limiting portion is matched to each first position-limiting portion.

5. The diaphragm assembly of claim 3, wherein the movable portion is an annular structure, the fixed portion comprises a third limiting portion, the movable portion comprises a fourth limiting portion, the third limiting portion is disposed along a radial direction of the annular structure in a direction away from the first limiting portion, the fourth limiting portion is disposed along the radial direction of the annular structure in a direction away from the second limiting portion, the first limiting portion has a first stopping portion, the second limiting portion has a second stopping portion, the third limiting portion has a third stopping portion, and the fourth limiting portion has a fourth stopping portion;

when the movable portion moves in the rotational direction, the first stopper portion and the second stopper portion abut against each other, and the third stopper portion and the fourth stopper portion abut against each other, thereby cooperatively defining a movable range of the movable portion in the rotational direction.

6. The diaphragm assembly of claim 3, wherein the movable portion is an annular structure, the fixed portion comprises a third position-limiting portion, the movable portion comprises a fourth position-limiting portion, the third position-limiting portion is disposed along a radial direction of the annular structure in a direction away from the first position-limiting portion, the fourth position-limiting portion is disposed along the radial direction of the annular structure in a direction away from the second position-limiting portion, the first position-limiting portion has a first receiving portion, the second position-limiting portion has a second receiving portion, the third position-limiting portion has a third receiving portion, and the fourth position-limiting portion has a fourth receiving portion;

in a case where the movable portion is movable in the rotational direction, the first receiving portion and the second receiving portion abut against each other, and the third receiving portion and the fourth receiving portion abut against each other, thereby cooperatively defining a movable range of the movable portion in the radial direction.

7. The aperture assembly according to claim 1, wherein the coil includes a second segment connected to the first segment, the second segment being arranged tangentially to the direction of rotation of the movable portion, the first segment and the second segment being perpendicular to each other and the first segment having a length greater than the second segment,

the movable part is of an annular structure, a first length is formed on the first section along the radial direction of the annular structure, a second length is formed on the magnetic part along the radial direction of the annular structure, and the second length is smaller than the first length.

8. The aperture assembly of claim 1, wherein the aperture assembly comprises a magnetic conductor configured to attract the magnetic member when the magnetic member is proximate to the magnetic conductor such that the at least two blades maintain the formation of the aperture.

9. A camera module having an optical axis, wherein the camera module comprises an aperture assembly according to any one of claims 1-8.

10. The camera module of claim 9, wherein the camera module comprises:

a first lens;

a second lens, the first lens and the second lens being disposed along the optical axis,

wherein the aperture assembly is disposed between the first lens and the second lens along the optical axis, or

The aperture assembly is arranged on the object side of the first lens along the optical axis.

11. An electronic device, characterized in that the electronic device comprises a camera module according to any one of claims 9-10.

Technical Field

The invention relates to the field of optical equipment, in particular to a diaphragm assembly, a camera module and an electronic device.

Background

In the existing camera module, the iris diaphragm structure is arranged in front of the lens, and in order to realize the function, the structure of the iris diaphragm structure must be highly integrated, if the driving structure is arranged on the side edge, the iris diaphragm structure cannot be replaced by other types of motor structures, the gravity center is seriously deviated to one side, extra correction needs to be carried out, the total height of the camera module is easily increased, and the miniaturization is difficult to realize.

Disclosure of Invention

The embodiment of the invention provides an aperture assembly, a camera module and an electronic device, which can realize miniaturization, improve the collocating property of a motor structure and ensure that a lens cannot be obviously inclined to cause image blurring when being focused.

The embodiment of the invention provides a diaphragm assembly, which is used for a camera module, wherein the camera module is provided with an optical axis, and the diaphragm assembly comprises:

the driving structure comprises a movable part and a fixed part, the movable part is provided with magnetic parts symmetrically arranged around the optical axis, the fixed part is provided with coils symmetrically arranged around the optical axis, each coil comprises a first section, the first section extends along the radial direction formed by surrounding the optical axis, and the magnetic parts are arranged corresponding to the first sections; and

an aperture structure comprising at least two blades disposed about the optical axis, the at least two blades connected to the movable portion;

under the condition that the coil is electrified, the first section is used for generating thrust on the magnetic part, so that the magnetic part drives the movable part to rotate around the optical axis to drive the at least two blades to rotate and form an aperture.

Above-mentioned light ring subassembly sets the structure of complete symmetry through the optical axis with the drive structure around the module of making a video recording, can not produce obvious slope and lead to the image fuzzy when focusing, is difficult to increase the total height of the module of making a video recording simultaneously, easily realizes the miniaturization.

In some embodiments, the aperture structure comprises a limiting blade for defining a movement space of the at least two blades. Therefore, the phenomenon that the light transmission effect is influenced by deformation or sagging of the blades during rotation can be avoided.

In some embodiments, the aperture assembly includes a ball, the fixed portion includes a first position-limiting portion, the movable portion includes a second position-limiting portion, and the first position-limiting portion and the second position-limiting portion jointly define a position-limiting space for the ball to roll. Thus, the friction force generated can be minimized, and the miniaturization can be easily realized.

In some embodiments, the first position-limiting portions are symmetrically disposed on the fixed portion around the optical axis, the second position-limiting portions are symmetrically disposed on the movable portion around the optical axis, and each of the first position-limiting portions is matched with one of the second position-limiting portions. Therefore, the difference between the movable part and the fixed part can be avoided to influence the rotation of the movable part, and the manufacturing process of the whole structure is facilitated.

In some embodiments, the movable portion is an annular structure, the fixed portion includes a third limiting portion, the movable portion includes a fourth limiting portion, the third limiting portion is disposed along a radial direction of the annular structure in a direction away from the first limiting portion, the fourth limiting portion is disposed along the radial direction of the annular structure in a direction away from the second limiting portion, the first limiting portion has a first stopping portion, the second limiting portion has a second stopping portion, the third limiting portion has a third stopping portion, and the fourth limiting portion has a fourth stopping portion;

when the movable portion moves in the rotational direction, the first stopper portion and the second stopper portion abut against each other, and the third stopper portion and the fourth stopper portion abut against each other, thereby cooperatively defining a movable range of the movable portion in the rotational direction. Thus, collision between the movable part and the fixed part can be prevented, and the structural reliability is improved.

In some embodiments, the movable portion is an annular structure, the fixed portion includes a third position-limiting portion, the movable portion includes a fourth position-limiting portion, the third position-limiting portion is disposed along a radial direction of the annular structure in a direction away from the first position-limiting portion, the fourth position-limiting portion is disposed along the radial direction of the annular structure in a direction away from the second position-limiting portion, the first position-limiting portion has a first receiving portion, the second position-limiting portion has a second receiving portion, the third position-limiting portion has a third receiving portion, and the fourth position-limiting portion has a fourth receiving portion;

in a case where the movable portion is movable in the rotational direction, the first receiving portion and the second receiving portion abut against each other, and the third receiving portion and the fourth receiving portion abut against each other, thereby cooperatively defining a movable range of the movable portion in the radial direction. Thus, collision between the movable part and the fixed part can be prevented, and the structural reliability is improved.

In some embodiments, the coil includes a second segment connecting the first segments, the second segments being distributed tangentially to the direction of rotation of the movable portion, the first and second segments being perpendicular to each other, and the first segment having a length greater than the second segment,

the movable part is of an annular structure, a first length is formed on the first section along the radial direction of the annular structure, a second length is formed on the magnetic part along the radial direction of the annular structure, and the second length is smaller than the first length. In this way, the thrust force generated by the coil on the magnetic member can be maximized, and the weight of the magnetic member can be minimized.

In some embodiments, the aperture assembly includes a magnetic conductor for attracting the magnetic member to cause the at least two blades to maintain the formation of the aperture when the magnetic member is proximate to the magnetic conductor. In this way, the aperture can be kept open in the event of a coil failure.

The camera module provided by the embodiment of the invention is provided with an optical axis and comprises the aperture assembly in any one of the embodiments.

Above-mentioned module of making a video recording sets the structure of complete symmetry to through the optical axis with the drive structure around the module of making a video recording, can not produce obvious slope and lead to the image fuzzy when focusing, is difficult to increase the total height of the module of making a video recording simultaneously, easily realizes the miniaturization.

In some embodiments, the camera module comprises:

a first lens;

a second lens, the first lens and the second lens being disposed along the optical axis,

wherein the aperture assembly is disposed between the first lens and the second lens along the optical axis, or

The aperture assembly is arranged on the object side of the first lens along the optical axis.

An electronic device provided by an embodiment of the present invention includes the camera module according to any one of the above embodiments.

Above-mentioned electronic device sets the structure of complete symmetry through the optical axis with the drive structure around the module of making a video recording, can not produce obvious slope and lead to the image fuzzy when focusing, is difficult to increase the total height of the module of making a video recording simultaneously, easily realizes the miniaturization.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a perspective view of an aperture assembly according to an embodiment of the present invention;

FIG. 2 is an exploded view of an aperture assembly according to an embodiment of the present invention;

FIG. 3 is another exploded view of an aperture assembly according to an embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view of the aperture assembly of FIG. 1 taken along the line A-A;

FIG. 5 is a schematic view of an aperture configuration according to an embodiment of the present invention;

FIG. 6 is a schematic view of another state of an aperture structure according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a fixing portion according to an embodiment of the present invention;

FIG. 8 is a schematic structural view of a movable section of an embodiment of the present invention;

FIG. 9 is a schematic view of the structure of the magnetic member and coil according to the embodiment of the present invention;

FIG. 10 is a schematic view of another state of the magnetic member and the coil according to the embodiment of the present invention;

FIG. 11 is a schematic view of a further state of the magnetic member and coil according to the embodiment of the present invention;

FIG. 12 is a schematic view of a further state of the magnetic member and coil according to the embodiment of the present invention;

FIG. 13 is a block diagram of a camera module according to an embodiment of the present invention;

FIG. 14 is a schematic block diagram of a camera module according to an embodiment of the present invention;

fig. 15 is a schematic view of an electronic device according to an embodiment of the present invention.

Description of the main element symbols:

an aperture assembly 1000, a camera module 2000, an electronic device 3000;

the driving structure 110, the movable part 111, the fixed part 113, the diaphragm structure 130, the blades 131, the limiting blades 131, the magnetic member 150, the coil 170 and the upper shell 190;

the first connecting piece 211, the second connecting piece 213, the groove 215, the first through hole 217, the second through hole 219, and the movable space 237;

the ball 311, the first limiting part 330, the first surface 331, the second surface 333, the first stopping part 335, the first receiving part 337, the second limiting part 350, the third surface 351, the fourth surface 353, the second stopping part 355, the second receiving part 357, the limiting space 360, the third limiting part 370, the third stopping part 375, the third receiving part 377, the fourth limiting part 390, the interval 391, the protruding structure 393, the fourth stopping part 395, and the fourth receiving part 397;

the first section 410, the second section 430, the fixing plate 450, the protrusion 470, the magnetic conducting member 490, the annular body 491, the first magnetic part 493, and the second magnetic part 495;

a first lens 510 and a second lens 530.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited. Either mechanically or electrically. Either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The disclosure herein provides many different embodiments or examples for implementing different configurations of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.

Referring to fig. 1-3 and 9, an embodiment of an aperture assembly 1000 according to the invention provides an aperture assembly 1000, where the aperture assembly 1000 is used in a camera module, and the camera module has an optical axis L. Aperture assembly 1000 includes a drive structure 110 and an aperture structure 130. The driving structure 110 includes a movable portion 111 and a fixed portion 113. The movable portion 111 is provided with magnetic members 150 arranged symmetrically about the optical axis L. The fixing portion 113 is provided with coils 170 arranged symmetrically about the optical axis L. The coil 170 includes a first segment 410. The first segment 410 extends in a radial direction formed around the optical axis L. The magnetic member 150 is disposed corresponding to the first segment 410. The aperture structure 130 includes at least two blades 131. At least two blades 131 are disposed about the optical axis L. At least two blades 131 are connected to the movable portion 111. Under the condition that the coil 170 is energized, the first segment 410 is used for generating a thrust force on the magnetic member 150, so that the magnetic member 150 drives the movable portion 111 to rotate around the optical axis L to drive the at least two blades 131 to rotate and form an aperture.

Above-mentioned diaphragm subassembly 1000 sets the structure to the complete symmetry through the optical axis L with drive structure 110 around the module 2000 of making a video recording, can not produce obvious slope and lead to the image fuzzy when focusing, is difficult to increase the total height of the module of making a video recording simultaneously, easily realizes the miniaturization.

Specifically, the driving structure 110 has an annular shape, and the optical axis L passes through the center of the annular shape, so that the movable portion 111 can rotate along the optical axis L. At least two blades 131 are disposed around the optical axis L and are each connected to the movable portion 111. When the movable portion 111 rotates around the optical axis L, the blades 131 are driven by the movable portion 111 to rotate, so that at least two blades 131 can rotate relatively in a matched manner to adjust the size of the aperture. In the embodiment shown in fig. 2 and 3, the number of the blades 131 is 2. It will be appreciated that the number of blades 131 may be adjusted on a case-by-case basis, or calibrated through actual testing. In other embodiments, the number of the blades 131 is two or more.

It will be appreciated that, with the coil 170 energized, a corresponding magnetic field is generated around the first segment 410. When the first segment 410 is moved away, the magnetic member 150 in the magnetic field is pushed by the magnetic field generated by the first segment 410, so that the magnetic member 150 can move in the direction of the magnetic field. In the case where the magnetic members 150 are symmetrically arranged around the optical axis L, since the thrust force applied to each magnetic member 150 is directed to the tangential direction along the rotation direction of the movable portion 111, the movable portion 111 can be driven to rotate along the rotation direction when the magnetic members 150 are moved by the thrust force. In the embodiment shown in fig. 9, the magnetic member 150 and the projected portion of the first segment 410 are overlapped in the direction of the optical axis L such that the magnetic member 150 is disposed corresponding to the first segment 410. In other embodiments, the magnetic member 150 may be a single magnet, a combination of two magnets with opposite polarities, or an electromagnet.

In the embodiment shown in fig. 2 and 3, the number of coils 170 is 4, and the number of magnetic members 150 is 4. It should be noted that, the arrangement and number of the magnetic members 150 and the coils 170 can be selected according to the above-mentioned embodiment, where the non-magnetic members 150 and the coils 170 are symmetrically arranged around the optical axis L, and the number of the coils 170 is matched with the number of the magnetic members 150, so that each magnetic member 150 can be subjected to the same magnitude of thrust in the tangential direction along the rotation direction of the movable portion 111, thereby ensuring that the movable portion 111 is uniformly stressed to rotate smoothly. In other embodiments, the magnets are expanded in detail.

Further, in the embodiment shown in fig. 1-3, aperture assembly 1000 includes upper housing 190. The fixing portion 113 is connected by the upper case 190 such that the upper case 190 and the fixing portion 113 form an outer case of the diaphragm assembly 1000, thereby protecting the internal structure of the diaphragm assembly 1000.

Referring to fig. 4, in the embodiment shown in fig. 4, the movable portion 111 is provided with a first connecting member 211. The fixing portion 113 is provided with a second connector 213. The blade 131 is provided with a first through hole 217 and a second through hole 219. The first connecting member 211 is connected to the first through hole 217. The second connecting member 213 is connected to the second through hole 219. When the movable portion 111 rotates, the blade 131 is driven to rotate by the first connecting member 211, and since the position of the fixed portion 113 relative to the blade 131 is unchanged, the blade 131 rotates along the rotating shaft formed by the second connecting member 213 (as shown in fig. 5 and 6, in which the blade 131 in fig. 5 is in a state before being energized, and the blade 131 in fig. 6 is in a state after being energized). In some embodiments, the first through hole 217 is a kidney hole, so that the first connecting member 211 is prevented from being structurally pressed against the sidewall of the first through hole 217 while being moved.

It should be noted that in other embodiments, by adjusting the position reached by the movable portion 111 after rotation, at least two blades 131 may be rotated to corresponding positions, so that the size of the aperture may also be adjusted.

In addition, in the embodiment shown in fig. 3, the movable portion 111 is further provided with a groove 215 for accommodating the magnetic member 150, and the magnetic member 150 is fixed in the groove 215, so that the contact area between the magnetic member 150 and the movable portion 111 can be increased, the connection firmness between the magnetic member 150 and the movable portion 111 can be further increased, and the magnetic member 150 is prevented from falling off from the movable portion 111 when receiving a pushing force. The embodiment of the magnetic member 150 disposed on the fixing portion 113 can refer to the above-mentioned embodiment.

In other embodiments, the magnetic member 150 may be a permanent magnet or an electromagnet.

Referring to fig. 2, 3, 4-6, in some embodiments, the aperture structure 130 includes a position limiting blade 231. The restricting blade 231 serves to define a moving space 237 of at least two blades 131. Therefore, the deformation or sagging of the blade 131 during rotation can be avoided to affect the light transmission effect.

Specifically, in the embodiment shown in fig. 5 and 6, at least two blades 131 are sequentially staggered in the axial direction of the optical axis L. It will be appreciated that in order to ensure that each blade 131 is capable of movement, it is necessary to provide the blades 131 in a laminar configuration to accommodate the narrow movement space 237. The blade 131 may be deformed by being pressed when rotating, or the rotating direction thereof may be deviated to cause a problem that the blade 131 sags, thereby affecting the formation of the diaphragm. In this case, by limiting the moving space 237 for the rotation of the blade 131 by the vane 231, it is possible to secure a sufficient rotation range of the blade 131 while preventing the blade 131 from sagging while rotating. In one embodiment, the thickness of the gap in the activity space 237 for the movement of the blades 131 is 0.082 mm.

More specifically, in the embodiment shown in fig. 2 and 3, the number of the restricting blades 133 is two. Two spacing blades all are cyclic annular and are parallel arrangement along optical axis L's axial. One of the limiting blades 133 is disposed at the same side of all the blades 131, and the other limiting blade 133 is disposed at the other side of all the blades 131, so that a moving space 237 of the blades 131 can be defined. In one embodiment, the thickness of the active space 237 (corresponding to the distance between the first limiting vane 233 and the second limiting vane 235) is 0.36mm, and the RSS (Root-Sum-Square-error) tolerance is 0.302mm at the minimum.

In other embodiments, the thickness of the blade 131 may be 0.055mm, 0.033mm, or 0.022 mm. The thickness of each blade 131 may or may not be identical. In such an embodiment, the number of the blades 131 is 4, and the thicknesses of the 4 blades 131 may be all 0.055mm, or may be 0.055mm, 0.022mm, and 0.022mm, respectively. Other embodiments are not limited thereto.

In the illustrated embodiment, the two stopper blades 133 have the same structure. In other embodiments, the two limiting blades 133 may have different structures, provided that the limitation of the activity space 237 is achieved. In such an embodiment, the two retaining blades 133 form a ring structure having different dimensions.

Referring to fig. 3 and 4, in some embodiments, the aperture assembly 1000 includes a ball 311. Referring to fig. 7 and 8, the fixing portion 113 includes a first position-limiting portion 330. The movable portion 111 includes a second stopper portion 350. The first and second position-limiting portions 330 and 350 together define a position-limiting space 360 for the rolling ball 311 to roll. Thus, the friction force generated can be minimized, and the miniaturization can be easily realized.

Specifically, in the illustrated embodiment, the first position-limiting portion 330 is disposed to protrude from the surface of the fixing portion 113, and the second position-limiting portion 350 is disposed to be recessed from the surface of the movable portion 111. Referring to fig. 4, 7 and 8, the first position-limiting portion 330 has a first surface 331 and a second surface 333, and the second position-limiting portion 350 has a third surface 351 and a fourth surface 353. In the case where the fixed part 113 connects the movable part 111, the first and third faces 331 and 351 are parallel to each other, and the second and fourth faces 333 and 353 are parallel to each other, so that the first, second, third and fourth faces 331, 333, 351 and 353 collectively define the spacing space 360. When the movable portion 111 rotates, the balls 311 may roll between the second surface 333 and the fourth surface 353, and between the first surface 331 and the third surface 351, so that the friction force received by the movable portion 111 from the fixed portion 113 during rotation may be reduced. Parallel to each other means that the two faces are completely parallel to each other or that the angle formed between the two faces is within an allowable range (for example, less than 5 °).

Referring to fig. 7 and 8, in some embodiments, the first position-limiting part 330 is symmetrically disposed on the fixing part 113 around the optical axis L. The second stopper portion 350 is provided in plurality on the movable portion 111 symmetrically around the optical axis L. Each first position-limiting portion 330 is matched with a second position-limiting portion 350. Thus, the difference between the movable portion 111 and the fixed portion 113 can be prevented from affecting the rotation of the movable portion 111, which is also beneficial to the manufacturing process of the whole structure.

Specifically, in the embodiment shown in fig. 7 and 8, the number of the first stopper portions 330 is 4, and the number of the second stopper portions 350 is 4. The first position-limiting portion 330 and the second position-limiting portion 350 are both arranged around the optical axis L, and the first position-limiting portion 330 corresponds to one second position-limiting portion 350, so that 4 independent position-limiting spaces 360 can be defined. It can be understood that, in the case that one ball 311 is disposed in each of the limiting spaces 360, since the limiting spaces 360 are independent from each other, the balls 311 disposed inside roll in the corresponding limiting spaces 360 in a manner of not affecting each other. Thus, even if there is a difference between each of the stopper spaces 360, the corresponding balls 311 do not affect the operation between the movable portion 111 and the fixed portion 113 due to the difference in the rolling trajectories.

In addition, in other embodiments, the number of the first limiting part 330 and the second limiting part 350 may be selected according to specific situations, or may be calibrated through actual tests. In some embodiments, the number of the first and second position-limiting parts 330 and 350 may be three or five or more. Will not be described in detail herein.

Referring to fig. 1, 7 and 8, in some embodiments, the movable portion 111 has a ring structure. The fixing portion 113 includes a third stopper 370. The movable portion 111 includes a fourth position-limiting portion 390. The third position-limiting portion 370 is disposed along the radial direction of the annular structure and faces away from the first position-limiting portion 330. The fourth position-limiting portion 390 is disposed along the radial direction of the annular structure and faces away from the second position-limiting portion 350. The first position-limiting portion 330 has a first stopping portion 335, the second position-limiting portion 350 has a second stopping portion 355, the third position-limiting portion 370 has a third stopping portion 375, and the fourth position-limiting portion 390 has a fourth stopping portion 395. In the case where the movable part 111 is movable in the rotational direction, the first stopper 335 and the second stopper 355 abut against each other, and the third stopper 375 and the fourth stopper 395 abut against each other, thereby cooperatively defining the movable range of the movable part 111 in the rotational direction. Thus, collision between the movable portion 111 and the fixed portion 113 can be prevented, and the structural reliability is improved.

Specifically, referring to fig. 7 and 8, two ends of the first limiting portion 330 along the rotation direction of the movable portion 111 are respectively provided with a first stopping portion 335, two ends of the second limiting portion 350 along the rotation direction of the movable portion 111 are respectively provided with a second stopping portion 355, two ends of the third limiting portion 370 along the rotation direction of the movable portion 111 are respectively provided with a third stopping portion 375, and two ends of the fourth limiting portion 390 along the rotation direction of the movable portion 111 are respectively provided with a fourth stopping portion 395. In the case where the movable part 111 rotates in one of the clockwise and counterclockwise directions, the first stopper 335 and the second stopper 355 on the same side in the direction may abut against each other, and the third stopper 375 and the fourth stopper 395 on the same side in the direction may abut against each other; and vice versa. That is, the movable range of the movable portion 111 in the rotating direction during rotation can be limited, and thus a large degree of collision between the fixed portion 113 and the movable portion 111 can be avoided, which is beneficial to improving the reliability of the structure.

In other embodiments, the first blocking portion 335 and the second blocking portion 355 on the same side may be parallel to each other or may form a certain angle with each other. The third stopping portion 375 and the fourth stopping portion 395 on the same side may be parallel to each other or may form a certain angle with each other.

Referring to fig. 1, 7 and 8, in some embodiments, the movable portion 111 has a ring structure. The fixing portion 113 includes a third stopper 370. The movable portion 111 includes a fourth position-limiting portion 390. The third position-limiting portion 370 is disposed along the radial direction of the annular structure and faces away from the first position-limiting portion 330. The fourth position-limiting portion 390 is disposed along the radial direction of the annular structure and faces away from the second position-limiting portion 350. The first position-limiting portion 330 has a first receiving portion 337. The second limiting portion 350 has a second receiving portion 357. The third limiting portion 370 has a third receiving portion 377. The fourth limiting portion 390 has a fourth receiving portion 397. In the case where the movable portion 111 is movable in the rotational direction, the first receiving portion 337 and the second receiving portion 357 abut against each other, and the third receiving portion 377 and the fourth receiving portion 397 abut against each other, thereby cooperatively defining the movable range of the movable portion 111 in the radial direction.

Specifically, referring to fig. 7 and 8, the first limiting portion 330 is provided with a first receiving portion 337 along the radial direction of the movable portion 111, the second limiting portion 350 is provided with a second receiving portion 357 along the radial direction of the movable portion 111, the third limiting portion 370 is provided with a third receiving portion 377 along the radial direction of the movable portion 111, and the fourth limiting portion 390 is provided with a fourth receiving portion 397 along the radial direction of the movable portion 111.

It is understood that in the case where the movable portion 111 rotates in one of the clockwise and counterclockwise directions, the movable portion 111 may jump while rotating, thereby colliding with the fixed portion 113. In this case, the first receiving portion 337 and the second receiving portion 357 are in contact with each other to prevent the movable portion 111 from jumping in a direction approaching the optical axis L, and the third receiving portion 377 and the fourth receiving portion 397 are in contact with each other to prevent the movable portion 111 from jumping in a direction away from the optical axis L. That is, the movable range of the movable portion 111 in the radial direction when rotating can be limited, and thus a large degree of collision between the fixed portion 113 and the movable portion 111 can be avoided, which is advantageous for improving the reliability of the structure.

In addition, in other embodiments, the first receiving portion 337 may be disposed as a curved surface around the optical axis L, and the second receiving portion 357 may be disposed as a curved surface corresponding to the first receiving portion 337, so that a contact area between the first limiting portion 337 and the second limiting portion 357 may be increased, so that the contact is more sufficient. A similar arrangement may be provided between the third and fourth bays 377, 397. And will not be described in detail herein.

Furthermore, in the illustrated embodiment, the third stopping portion 370 is disposed away from the first stopping portion 330, such that a space 391 is formed between the first stopping portion 330 and the third stopping portion 370. The fourth stopping portion 390 is disposed away from the second stopping portion 350, so that the protruding structure 393 of the movable portion 111 formed between the second stopping portion 350 and the fourth stopping portion 390 can be received in the gap 391. In the illustrated embodiment, the movable range of the convex structures 393 is radially limited by the intervals 391, so that the movable range of the movable part 111 can be further limited, a large degree of collision between the movable part 111 and the fixed part 113 is avoided, and the structural reliability is improved.

Referring to fig. 9, in some embodiments, the coil 170 includes a second segment 430 connected to the first segment 410. The second segments 430 are distributed tangentially to the direction of rotation of the movable portion 111. The first section 410 and the second section 430 are perpendicular to each other and the length of the first section 410 is greater than the length of the second section 430. The movable portion 111 has a ring-shaped structure. The first segment 410 is formed with a first length L1 in a radial direction of the annular structure. The magnetic member 150 is formed with a second length L2 along a radial direction of the ring structure. The second length L2 is less than the first length L1. Thus, the thrust force generated by the coil 170 to the magnetic member 150 can be increased, and the weight of the magnetic member 150 can be reduced.

Specifically, in the illustrated embodiment, aperture assembly 1000 includes a fixed plate 450. The fixing plate 450 is provided with a projection 470 for receiving the coil 170. Referring to fig. 2, the position of the protrusion 470 on the fixing plate 450 corresponds to the position of the magnetic element 150 on the movable portion 111, so that the coil 170 is disposed corresponding to the magnetic element 150 to provide sufficient pushing force to the magnetic element 150. In one embodiment, the coil 170 and the fixing plate 450 are a unitary structure.

It can be understood that, when the coil 170 is energized, the thrust force provided to the magnetic member 150 by the magnetic field generated by the second segment 430 distributed tangentially to the direction of rotation of the movable portion 111 is oriented in the radial direction of the annular structure, and the thrust force provided to the magnetic member 150 by the magnetic field generated by the first segment 410 perpendicular to the second segment 430 (i.e., distributed radially to the direction of rotation of the movable portion 111) is oriented in the radial direction of the annular structure. Since the thrust force in the radial direction of the annular structure cannot be used to drive the movable portion 111 to rotate, by setting the coil 170 such that the length of the first section 410 is greater than that of the second section 430, the coil 170 can be miniaturized while providing a greater thrust force for the magnetic member 150, which is beneficial to optimizing the space structure.

In addition, referring to fig. 9, since the coil 170 forms a closed loop by the two first segments 410 and the two second segments 430, the directions of the currents in the two second segments 430 are opposite to each other, so that the tangential thrust to the magnetic element 150 along the ring structure cannot be generated. In this case, the second length L2 is smaller than the first length L1, so that the magnetic element 150 is located between the two second sections 430, and the thrusts generated by the two second sections 430 to the magnetic element 150 are opposite to each other, so that the thrust in the radial direction of the annular structure received by the magnetic element 150 is offset, and the self weight of the magnetic element 150 can be reasonably configured, thereby preventing the magnetic element 150 from being too heavy to reduce the moving speed of the magnetic element 150 when receiving the thrust. In one embodiment, the magnetic member 150 has an N-pole polarity near one of the first segments 410 and an S-pole polarity near the other first segment 410, so that the two first segments 410 can generate thrust in the same direction to the magnetic member 150 when being energized because the current directions of the two first segments 410 are opposite.

In addition, in other embodiments, the direction of the thrust of the coil 170 against the magnetic member 150 may be further changed by changing the direction of the current through the coil 170.

Referring to fig. 2, 10-12, in some embodiments, the aperture assembly 1000 includes a magnetic conducting member 490. In the case that the magnetic member 150 is close to the magnetic conductive member 490, the magnetic conductive member 490 serves to attract the magnetic member 150 so that the at least two blades 131 maintain the formation of the aperture. In this manner, the aperture can be kept open with the coil 170 de-energized.

Specifically, the magnetic conductive member 490 includes an annular body 491, a first magnetic portion 493, and a second magnetic portion 495. The first and second magnetic parts 493 and 495 are disposed corresponding to positions of the coil 170 and have magnetism. In the illustrated embodiment, the first magnetic portion 493 is disposed on the left side of the coil 170 in the counterclockwise direction of the loop 491, and the second magnetic portion 495 is disposed on the right side of the coil 170 in the clockwise direction of the loop 491. In one embodiment, the magnetic conducting member 490 and the fixing portion 113 are an integral structure.

Referring to fig. 11 and 12, in an embodiment, when the coil 170 is not energized, the magnetic member 150 is close to the first magnetic portion 493, and the first magnetic portion 493 and the magnetic member 150 can attract each other because the attraction force of the first magnetic portion 493 to the magnetic member 150 is greater than the attraction force of the second magnetic portion 495 to the magnetic member 150. When the coil 170 is energized, the magnetic member 150 is pushed to move toward the second magnetic portion 495 and finally to be close to the second magnetic portion 495, so that the diaphragm is opened. In the case that the coil 170 is powered off, since the attraction force of the second magnetic portion 495 to the magnetic element 150 is greater than the attraction force of the first magnetic portion 493 to the magnetic element 150, the second magnetic portion 495 and the magnetic element 150 can attract each other, so that the magnetic element 150 is maintained at the position before the power off, and the movable portion 111 is maintained at the state before the power off, so that the aperture is maintained to be opened.

In addition, the magnetic conducting member 490 may be a permanent magnet or an electromagnet. In one embodiment, the magnetic conductor is metal, and in the case where the magnetic conductor and the magnetic member 150 are attracted to each other by magnetic force, the movable portion 111 and the fixed portion 113 can be made to approach each other in the axial direction of the optical axis L.

Referring to fig. 13 and 14, in an embodiment of the invention, a camera module 2000 is provided, where the camera module 2000 has an optical axis L. The camera module 2000 includes the aperture assembly 1000 according to any of the above embodiments.

Above-mentioned camera module 2000 sets the structure of complete symmetry through the optical axis L with drive structure 110 around camera module 2000, can not produce obvious slope and lead to the image fuzzy when focusing, is difficult to increase camera module 2000's total height simultaneously, easily realizes the miniaturization.

Referring to fig. 13 and 14, in some embodiments, the camera module 2000 includes a first lens 510 and a second lens 530. The first lens 510 and the second lens 530 are disposed along the optical axis L. The aperture assembly 1000 is disposed between the first lens 510 and the second lens 530 along the optical axis L, or the aperture assembly 1000 is disposed on the object side of the first lens 510 along the optical axis L. Thus, the applicability of the aperture assembly 1000 can be improved.

Specifically, the aperture assembly 1000 may be disposed between the first lens 510 and the second lens 530, or the aperture assembly 1000 may be disposed on the object side of the first lens 510 along the optical axis L according to different requirements, and the aperture assembly 1000 has a lower overall height, which is also beneficial to realizing the miniaturization of the camera module 2000.

Referring to fig. 15, an electronic device 3000 according to an embodiment of the present invention includes the camera module 2000 according to any one of the above embodiments.

The electronic device 3000 is configured to be completely symmetrical about the optical axis L of the camera module 2000 by the driving structure 110, so that the image blur caused by the obvious tilt is not generated during focusing, and the total height of the camera module 2000 is not easily increased, thereby being easy to realize miniaturization.

The electronic device 3000 according to the embodiment of the present invention includes, but is not limited to, an information terminal device such as a camera, a car recorder, a smart phone, a Personal Digital Assistant (PDA), a tablet computer, a Personal Computer (PC), and a smart wearable device, or an electronic device 3000 having a photographing function.

Specifically, in the embodiment shown in fig. 15, the electronic device 3000 is a mobile phone. The camera module 2000 is a front camera of a mobile phone. It is understood that in other embodiments, the camera module 2000 may be disposed at any position of the electronic device 3000 to achieve the effect of the camera module 2000 used for shooting in the foregoing embodiments.

In the description of the specification, references to the terms "one embodiment", "some embodiments", "certain embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.