Aperture, camera device, and electronic device

Abstract

The embodiments of the present application provide an aperture, a camera device and an electronic device. The aperture includes a housing, a polarization component and a drive component. The housing includes a accommodating cavity, a first light through hole and a second light through hole. The polarization component is arranged in the accommodating cavity and connected to the housing. The polarization component is arranged on the light path from the first light through hole to the second light through hole. The polarization component includes two or more stacked polarization elements. The polarization element includes a light-transmitting area and a circular polarization area. Along the axial direction of the first light through hole, the positive projections of the circular polarization areas of each polarization element at least partially overlap. At least one of the two or more polarization elements is rotatable. The drive component includes a first component and a second component, wherein one is connected to the housing and the other is connected to the rotatable polarization element. At least one of the first component and the second component is an electromagnetic unit. The first component and the second component generate a magnetic force for changing the relative position of the first component and the second component to drive the rotatable polarization element to rotate.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of terminal technology, and in particular to an aperture, a camera device, and an electronic device. Background Art

[0002] With the explosive growth of electronic devices such as smart phones or tablet computers, electronic devices have more and more functions. Since people expect electronic devices to meet more functional requirements, the functions that electronic devices themselves can realize are increasing. For example, the photo and video functions are more and more widely used on electronic products such as mobile phones, tablets, and televisions, and users have higher and higher requirements for the quality of photo and video. People expect that the camera device of the electronic device can shoot objects and have good image quality in scenes with different light brightness. The electronic device includes a camera device. If the aperture size of the camera device is fixed and cannot be adjusted, the amount of light entering the camera device cannot be adjusted, so that the camera device is difficult to adapt to scenes with different light brightness. With the development of science and technology, the aperture size of the camera device in the electronic device can be adjusted. For example, a plurality of blades are used to splice a nearly circular light hole and the size of the light hole can be adjusted by controlling the rotation amplitude of the blades through a driving device, that is, the size of the aperture is adjusted. However, the number of blades is large and the structure of the blades themselves is relatively complex, which increases the difficulty of the assembly process and affects the product yield of the camera device. Summary of the invention

[0003] The embodiments of the present application provide an aperture, a camera device, and an electronic device, which can help simplify the assembly process and improve the product yield of the camera device.

[0004] A first aspect of the present application provides an aperture, which includes a housing, a polarization component and a driving component.

[0005] The housing includes a housing cavity, a first light through hole and a second light through hole. The first light through hole and the second light through hole are respectively connected to the housing cavity. A polarization component is arranged in the housing cavity. The polarization component is connected to the housing. The polarization component is arranged on the light path from the first light through hole to the second light through hole. The polarization component includes more than two polarization elements. Along the axial direction of the first light through hole, more than two polarization elements are stacked. The polarization element includes a light-transmitting area and a circular polarization area. The circular polarization area is arranged around the light-transmitting area. Along the axial direction of the first light through hole, the positive projections of the circular polarization areas of each polarization element at least partially overlap. At least one of the more than two polarization elements is rotatable. The driving component includes a first component and a second component. One of the first component and the second component is connected to the housing, and the other is connected to the rotatable polarization element. At least one of the first component and the second component is an electromagnetic unit. A magnetic force is generated between the first component and the second component, which is used to change the relative position of the first component and the second component to drive the rotatable polarization element to rotate.

[0006] The aperture of the embodiment of the present application includes a housing, a polarization component and a driving component. The polarization component is arranged on the housing. The polarization component includes more than two polarization elements. The polarization element includes a light-transmitting area and a circular polarization area. The polarization elements are stacked and arranged, and the circular polarization areas of the polarization elements overlap. The polarization component includes a rotatable polarization element. After the rotatable polarization element is rotated, the angle between the polarization direction of the circular polarization area of ​​the polarization element and the polarization direction of the circular polarization area of ​​other polarization elements can be adjusted, so that the aperture size of the aperture can be adjusted by the mutual cooperation of the polarization elements, so that the structure for controlling the aperture size is relatively simple, which is conducive to reducing the difficulty of the assembly process. The driving component is used to make the rotatable polarization element generate torque to drive the rotatable polarization element to rotate. The relative position change between the first component and the second component of the driving component is achieved by adopting the magnetic force, and there is no need to additionally set a transmission mechanism between the first component and the second component, which is conducive to ensuring that the structure of the driving component itself is relatively simple and compact, and is conducive to reducing the difficulty of the assembly process. Therefore, the overall structure of the aperture of the embodiment of the present application is relatively simple, which is conducive to simplifying the assembly process and improving the product yield of the camera device.

[0007] In a possible implementation, the aperture further includes a limit bracket. The limit bracket is disposed in the accommodating cavity. The limit bracket is connected to the housing. The limit bracket includes a through hole. The polarization component is disposed in the limit bracket. At least part of the polarization component is located in the through hole.

[0008] The limiting bracket can provide limiting for the polarization component, ensuring that the position accuracy of the polarization component meets the requirements and the stability and reliability of the installation position.

[0009] In a possible embodiment, along the radial direction of the through hole, the driving assembly is arranged on the outer side of the limit bracket facing away from the polarization assembly. The limit bracket includes a avoidance portion. The avoidance portion penetrates the limit bracket along the radial direction of the through hole. The avoidance portion is connected to the through hole. The polarization assembly also includes a connecting arm. At least part of the connecting arm is located in the avoidance portion. One end of the connecting arm is connected to the rotatable polarization element, and the other end is connected to one of the first component and the second component.

[0010] In a possible implementation, the through hole is a stepped hole. The through hole includes a hole segment and a stepped surface connected between two adjacent hole segments. The number of polarizing elements is set in a one-to-one correspondence with the number of hole segments. The polarizing element is set in the hole segment. The polarizing element contacts the inner wall of the hole segment.

[0011] In the radial direction of the through hole, the limiting bracket can limit the polarizing element. During the rotation of the rotatable polarizing element, since the polarizing element contacts the inner wall of the hole segment, the position of the polarizing element in the limiting bracket can be kept stable and is not easily offset in the radial direction of the through hole.

[0012] In a possible implementation, a diameter of the first light passage hole is smaller than a diameter of the through hole.

[0013] Since the polarizing element with the smallest outer diameter is located in the hole segment with the smallest diameter, the edge of the polarizing element with the smallest outer diameter is located below the shell, so that there is an overlapping area between the polarizing element and the shell. The shell can limit the polarizing element arranged near the first light-transmitting hole, reducing the possibility of the polarizing element exiting from the through hole along the axial direction of the through hole.

[0014] In a possible implementation, the polarization component includes three polarization elements.

[0015] In a possible implementation, the diameter of the light-transmitting area of ​​the polarizing element near the first light-through hole and the diameter of the light-transmitting area of ​​the polarizing element near the second light-through hole are both smaller than the diameter of the light-transmitting area of ​​the polarizing element in the middle. The diameter of the light-transmitting area of ​​the polarizing element near the first light-through hole is equal to the diameter of the light-transmitting area of ​​the polarizing element near the second light-through hole. The polarizing element near the first light-through hole and the polarizing element in the middle are rotatable.

[0016] In a possible implementation, the first light hole is a light inlet hole, the second light hole is a light outlet hole, and the diameter of the first light hole is larger than the diameter of the light transmission area of ​​the polarizing element in the middle.

[0017] In a possible embodiment, the housing includes a first plate, an annular side plate, and a second plate. The first light through hole is provided in the first plate. The second light through hole is provided in the second plate. Along the axial direction of the first light through hole, the first plate and the second plate are respectively located on both sides of the annular side plate. At least one of the first plate and the second plate is connected to a limit bracket.

[0018] In a possible implementation, the aperture further includes a rolling body. At least the polarization element close to the first plate in the polarization assembly is rotatable. A rolling body is arranged between the polarization element close to the first plate and the first plate.

[0019] During the rotation of the polarizing element close to the first plate, rolling friction occurs between the polarizing element and the first plate, which is beneficial to reducing the rotation resistance of the polarizing element.

[0020] In a possible implementation, one of the polarizing element close to the first plate and the first plate is provided with an annular guide groove, and the other is provided with a limit groove. A rolling body is provided between the annular guide groove and the limit groove.

[0021] The limiting groove can limit the rolling body to prevent the rolling body from shifting in position due to the movement of the rotating polarizing element.

[0022] In a possible implementation, the driving assembly is disposed in the accommodating cavity. The limiting bracket is annular. The first component and the second component are disposed between the limiting bracket and the annular side plate.

[0023] In a possible implementation, the diaphragm further includes a rolling body. The rolling body is arranged between the rotatable polarization element and the adjacent polarization element.

[0024] During the rotation of the rotatable polarizing element, rolling friction occurs between two adjacent polarizing elements, which is beneficial to reducing the rotation resistance of the polarizing element.

[0025] In a possible implementation, one of the rotatable polarization element and the adjacent polarization element is provided with an annular guide groove, and the other is provided with a limiting groove. A rolling body is provided between the annular guide groove and the limiting groove.

[0026] The limiting groove can limit the rolling body to prevent the rolling body from shifting in position due to the movement of the rotating polarizing element.

[0027] In a possible implementation, the first component is an electromagnetic unit, the second component is a magnet, the first component is connected to the housing, and the second component is connected to a rotatable polarization element.

[0028] In a possible implementation, the electromagnetic unit includes a magnetic core and a coil. The magnetic core is located inside the coil.

[0029] In a possible implementation, the polarization assembly includes three polarization elements. One polarization element is fixed, and two polarization elements are rotatable. The two first components are symmetrically arranged relative to the axis of the first light-through hole. The two rotatable polarization elements are each connected to a second component. The first components and the second components are alternately arranged along the circumference of the first light-through hole.

[0030] In a possible implementation manner, the first component is an arc-shaped structure.

[0031] In a possible implementation, the aperture further includes a flexible circuit board. At least part of the flexible circuit board is disposed on the outer peripheral surface of the annular side plate. The electromagnetic unit is electrically connected to the flexible circuit board.

[0032] At least part of the flexible circuit board is arranged on the outer peripheral surface of the annular side plate, so that the outer peripheral surface of the shell can be utilized, which is beneficial to reducing the space occupation rate of the flexible circuit board.

[0033] In a possible implementation, the polarizing element is a polarizer.

[0034] The second aspect of the present application provides a camera device, which includes a lens group and an aperture. The aperture is arranged on at least one side of the lens group.

[0035] A third aspect of the present application provides an electronic device, which includes a camera device. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

[0037] Figure 2 A schematic diagram of a partial exploded structure of an electronic device provided in an embodiment of the present application;

[0038] Figure 3 A schematic diagram of a partial structure of a camera device provided in an embodiment of the present application;

[0039] Figure 4 A schematic diagram of a partial cross-sectional structure of an electronic device provided in an embodiment of the present application;

[0040] Figure 5 A schematic diagram of a partial structure of an aperture provided in an embodiment of the present application;

[0041] Figure 6 A schematic diagram of a partial decomposition structure of an aperture provided in an embodiment of the present application;

[0042] Figure 7 A schematic diagram of the structure of a housing provided in one embodiment of the present application;

[0043] Figure 8 A schematic diagram of a partial cross-sectional structure of an aperture provided in an embodiment of the present application;

[0044] Fig. 9 A schematic diagram of a partial structure of a polarization element provided in one embodiment of the present application;

[0045] Fig.10 A schematic diagram of a partial decomposition structure of a polarization component provided in an embodiment of the present application;

[0046] Fig.11 A schematic diagram of a partial decomposition structure of a polarization component provided in an embodiment of the present application;

[0047] Fig.12 A schematic diagram of a partial decomposition structure of a polarization component provided in another embodiment of the present application;

[0048] Fig.13 A schematic diagram of a partial decomposition structure of a polarization component provided in another embodiment of the present application;

[0049] Fig.14 A schematic diagram of a partial decomposition structure of a polarization component provided in another embodiment of the present application;

[0050] Fig.15 A schematic diagram of a partial decomposition structure of an aperture provided in an embodiment of the present application;

[0051] Fig.16 A schematic cross-sectional view of a position limiting bracket provided in one embodiment of the present application;

[0052] Fig.17 A schematic diagram of the structure of a first plate body provided in one embodiment of the present application;

[0053] Fig.18 A schematic diagram of a partial structure of an aperture provided in an embodiment of the present application;

[0054] Fig.19 A schematic diagram of a partial structure of an aperture provided in an embodiment of the present application;

[0055] Fig. 20 A schematic diagram of a partial structure of an aperture provided in an embodiment of the present application;

[0056] Fig.21 A schematic diagram of a partial structure of an aperture provided in an embodiment of the present application;

[0057] Fig. 22 A schematic diagram of a partial structure of an aperture provided in an embodiment of the present application;

[0058] Fig.23 A schematic diagram of a partial structure of an aperture provided in an embodiment of the present application;

[0059] Fig.24 A schematic diagram of a partial structure of an aperture provided in an embodiment of the present application;

[0060] Fig.25 A schematic diagram of the partial structure of an aperture provided in one embodiment of the present application.

[0061] Reference numerals:

[0062] 10. Electronic equipment;

[0063] 20. Display component;

[0064] 30. Shell; 31. Back cover; 32. Middle frame;

[0065] 40. Motherboard;

[0066] 50. Electronic devices;

[0067] 60. Camera device;

[0068] 70. Lens group;

[0069] 80. Image sensor;

[0070] 90. Aperture;

[0071] 91, housing; 91a, accommodating cavity; 91b, first light through hole; 91c, second light through hole; 911, first plate body; 912, annular side plate; 913, second plate body;

[0072] 92, polarization component; 921, polarization element; 921a, light-transmitting area; 921b, circular polarization area; 921c, connecting arm;

[0073] 93, driving assembly; 931, first component; 932, second component; 933, magnetic core; 934, coil; 935, conductive lead;

[0074] 94, limit bracket; 941, through hole; 941a, hole section; 941b, step surface; 942, avoidance portion;

[0075] 95. Rolling element;

[0076] 96. Flexible circuit board;

[0077] 100, annular guide groove;

[0078] 110, limit slot;

[0079] 120. Guidance space;

[0080] Z, axial direction. DETAILED DESCRIPTION

[0081] The electronic device in the embodiment of the present application can be called user equipment (UE) or terminal, etc. For example, the electronic device can be a tablet computer (portable android device, PAD), a personal digital assistant (personal digital assistant, PDA), a handheld device with wireless communication function, a computing device, a vehicle-mounted device, a wearable device, a virtual reality (virtual reality, VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self-driving, a wireless terminal in remote medical, a wireless terminal in smart grid (smartgrid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smartcity), a wireless terminal in smart home (smart home) and other mobile terminals or fixed terminals. In the embodiment of the present application, the form of the terminal device is not specifically limited.

[0082] In the embodiment of the present application, Figure 1 The structure of an electronic device 10 according to an embodiment is schematically shown. Figure 1 As shown, the electronic device 10 is taken as a handheld device with a wireless communication function as an example for description. The handheld device with a wireless communication function may be, for example, a mobile phone.

[0083] Figure 2 The partially exploded structure of the electronic device 10 is schematically shown. Figure 1 and Figure 2 As shown, the electronic device 10 of the embodiment of the present application includes a display assembly 20 , a housing 30 , a mainboard 40 and an electronic device 50 .

[0084] The display assembly 20 has a display area for displaying image information. The display assembly 20 presents image information to the user through the display area. The display assembly 20 is installed in the housing 30.

[0085] The mainboard 40 may be connected to the housing 30 and located in the housing 30. The mainboard 40 may be located between the display assembly 20 and the housing 30, so that the user cannot easily observe the mainboard 40 from the outside of the electronic device 10. Exemplarily, the housing 30 includes a back cover and a middle frame. The back cover is connected to the middle frame. Exemplarily, the mainboard 40 may be disposed in a space formed by the back cover and the middle frame.

[0086] The electronic device 50 is disposed on the mainboard 40. The mainboard 40 may be a printed circuit board (PCB). The electronic device 50 is soldered to the mainboard 40 by a soldering process. The electronic device 50 includes, but is not limited to, a radio frequency integrated circuit (RFIC), a radio frequency power amplifier (RFPA), a wireless fidelity (WIFI) chip, a central processing unit (CPU), an intelligent algorithm chip or a power management chip (PMIC). Since the internal space of the electronic device 10 is relatively small, the electronic device 50 is integrated on the mainboard 40 to fully reduce the volume of the mainboard 40 and reduce the space occupancy rate of the mainboard 40.

[0087] The electronic device 10 may further include a battery. The battery may be disposed in the housing 30. The battery is a structural member that can convert chemical energy into electrical energy. The battery is used to provide electrical energy to the electronic device 10 to ensure that the electronic device 10 operates normally. For example, the battery may provide electrical energy to the display component 20 so that the display component 20 displays image information or completes corresponding operation instructions, or the battery may provide electrical energy to the mainboard 40 to ensure that the electronic device 50 on the mainboard 40 operates normally. Exemplarily, the battery may be a lithium-ion battery, such as a lithium iron phosphate battery.

[0088] Figure 3 A partial structure of the imaging device 60 is schematically shown. Figure 4 The partial cross-sectional structure of the electronic device 10 is schematically shown. Figures 2 to 4 As shown, the electronic device 10 may include a camera device 60. The camera device 60 may be electrically connected to the mainboard 40 to achieve signal interaction. The housing 30 has a light-transmitting hole. Along the axial direction of the light-transmitting hole, the light-inlet portion of the camera device 60 is arranged corresponding to the light-transmitting hole. External light can reach the light-inlet portion. Exemplarily, the cross-sectional shape of the light-transmitting hole may be circular, elliptical or polygonal, which is not limited in the present application. The camera device 60 may be a rear-mounted camera or a front-mounted camera, which is not limited in the present application.

[0089] The camera device 60 may include a lens group 70 and an image sensor 80. The lens group 70 may include a plurality of lenses. The lens group 70 may change the propagation direction of light. By adjusting the spacing between the plurality of lenses, the focal length of the lens group 70 may be adjusted. When shooting using the camera device 60, light on the object side may pass through the lens group 70 and then be incident on the photosensitive surface of the image sensor 80. The photosensitive surface of the image sensor 80 refers to the surface that receives light. The lens group 70 has a virtual imaging surface. The imaging surface of the lens group 70 may coincide with the photosensitive surface of the image sensor 80. The image sensor 80 may be a sensor that converts light signals incident on the photosensitive surface into electrical signals. For example, the image sensor 80 may be a complementary metal oxide semiconductor (CMOS) sensor or a charge coupled device (CCD).

[0090] Figure 5 The partial structure of the aperture 90 is schematically shown. Figure 5As shown, the camera device 60 may include an aperture 90. The aperture 90 may be used as the aperture of the camera device 60. The aperture size of the aperture 90 may affect the amount of light entering the camera device 60. If the aperture of the aperture 90 is small, less light passes through the aperture 90, resulting in less light entering the camera device 60. If the aperture of the aperture 90 is large, more light passes through the aperture 90, resulting in more light entering the camera device 60. In some achievable ways, the aperture 90 may be provided on at least one side of the lens group 70. The lens group 70 includes a light-entering side and a light-exiting side. The aperture 90 may be provided on the light-entering side of the lens group 70. The light on the object side passes through the aperture 90 and reaches the lens group 70. Alternatively, the aperture 90 may be provided on the light-exiting side of the lens group 70. The light on the object side passes through the lens group 70 and reaches the aperture 90. Alternatively, the aperture 90 may be provided on the light-entering side and the light-exiting side of the lens group 70, respectively. The light on the object side passes through the aperture 90 and reaches the lens group 70 , and the light emitted from the lens group 70 can pass through the aperture 90 again.

[0091] The aperture size of the diaphragm 90 can be adjusted to control the amount of light entering the camera device 60 and improve the scene adaptability of the camera device 60, so that in scenes with different light brightness, the camera device 60 of the electronic device 10 can shoot objects with good image quality.

[0092] In the related art, the diaphragm 90 includes blades and a driving device. A plurality of blades are used to splice a nearly circular light-passing hole. Light can pass through the light-passing hole. The driving device can control the rotation amplitude of the blades to adjust the size of the light-passing hole, that is, to adjust the size of the aperture. When the driving device drives each blade to close close to the axis of the light-passing hole, the aperture of the light-passing hole spliced ​​by the plurality of blades becomes smaller, that is, the aperture of the diaphragm 90 becomes smaller. When the driving device drives each blade to expand away from the axis of the light-passing hole, the aperture of the light-passing hole spliced ​​by the plurality of blades becomes larger, that is, the aperture of the diaphragm 90 becomes larger. The installation position accuracy of each blade will affect the shape and aperture of the light-passing hole formed by splicing, so the accuracy of the blade installation position is required to be high. At the same time, due to the large number of blades and the relatively complex structure of the blades themselves, the difficulty of the assembly process increases, which affects the product yield of the camera device 60.

[0093] The camera device 60 of the present application includes an aperture 90. The aperture 90 includes a polarization component. The polarization component includes more than two polarization elements. The annular polarization zone of the polarization element has a polarization direction. The annular polarization zone of the polarization element allows polarized light parallel to the polarization direction to pass through, while absorbing polarized light perpendicular to the polarization direction. At least one of the more than two polarization elements is rotatable. By rotating the rotatable polarization element, the polarization direction of the annular polarization zone on the polarization element can be adjusted accordingly, and by changing the light transmittance of the annular polarization zones between the polarization elements, the aperture size of the aperture 90 can be changed to adjust the amount of light entering the camera device 60. The structure of the aperture 90 of the present application is relatively simple, which is conducive to simplifying the assembly process and improving the product yield of the camera device 60.

[0094] Figure 6 The partial exploded structure of the aperture 90 is schematically shown. Figure 5 and Figure 6 As shown, the aperture 90 of the embodiment of the present application includes a housing 91 , a polarization component 92 and a driving component 93 .

[0095] Figure 7 The structure of the housing 91 is schematically shown. Figure 6 and Figure 7 As shown, the housing 91 can provide a mounting base for other structural parts. The housing 91 includes a housing cavity 91a, a first light hole 91b and a second light hole 91c. The first light hole 91b and the second light hole 91c are respectively connected to the housing cavity 91a. In some examples, the first light hole 91b and the second light hole 91c can be coaxially arranged, that is, the axis of the first light hole 91b coincides with the axis of the second light hole 91c. In some examples, the first light hole 91b can be a light inlet hole, and the second light hole 91c can be a light outlet hole. Exemplarily, the overall thickness of the housing 91 of the aperture 90 can range from 0.9 millimeters (mm) to 1.5 millimeters.

[0096] The polarization component 92 is arranged in the accommodating cavity 91a of the housing 91. The housing 91 can provide protection and installation basis for the polarization component 92. The polarization component 92 is connected to the housing 91. The polarization component 92 is arranged on the optical path from the first light hole 91b to the second light hole 91c, so that the light entering the housing 91 from the outside needs to pass through the polarization component 92 before being emitted from the housing 91. The polarization component 92 can block the opening of the first light hole 91b facing the second light hole 91c, so that when observing from the outside of the first light hole 91b, the polarization component 92 can be observed, but the second light hole 91c is not easy to observe. Exemplarily, the first light hole 91b can be a light inlet hole, and the second light hole 91c can be a light outlet hole. The light passing through the first light hole 91b can reach the polarization component 92, and the light passing through the polarization component 92 can reach the second light hole 91c.

[0097] Figure 8 The partial cross-sectional structure of the aperture 90 is schematically shown. Fig. 9 The partial structure of the polarization element 921 is schematically shown. Figure 8 and Fig. 9 As shown, the polarization component 92 includes more than two polarization elements 921. The polarization element 921 includes a light-transmitting area 921a and an annular polarization area 921b. The central area of ​​the polarization element 921 can be set as the light-transmitting area 921a. Exemplarily, the light-transmitting area 921a in the center of the polarization element 921 can be a solid structure, not a hole structure. When light passes through the light-transmitting area 921a, the light can pass completely through the light-transmitting area 921a. The annular polarization area 921b is arranged around the light-transmitting area 921a. The annular polarization area 921b of the polarization element 921 has a polarization direction. When light passes through the annular polarization area 921b, the part of the light whose vibration direction is the same as the polarization direction of the annular polarization area 921b can pass through the annular polarization area 921b, while the part of the light whose vibration direction is different from the polarization direction of the annular polarization area 921b cannot pass through the annular polarization area 921b. Exemplarily, the annular polarization region 921 b of the polarization element 921 may be provided with a polarization structure, for example, the annular polarization region 921 b of the polarization element 921 may be provided with a grating structure.

[0098] For example, the polarizing element 921 may be a sheet-like structure. The polarizing element 921 has good rigidity and is not prone to distortion.

[0099] Exemplarily, the light-transmitting area 921a of the polarizing element 921 may be coaxially arranged with the first light-transmitting hole 91b, that is, the axis of the light-transmitting area 921a coincides with the axis of the first light-transmitting hole 91b. The light-transmitting area 921a of the polarizing element 921 may be, but is not limited to, circular. The annular polarizing area 921b may be, but is not limited to, a circular ring.

[0100] Along the axial direction Z of the first light through hole 91b, more than two polarization elements 921 are stacked. Among the more than two polarization elements 921, one of the polarization elements 921 located on opposite sides is arranged facing the first light through hole 91b, and the other is arranged facing the second light through hole 91c. After the light propagating along the axial direction Z of the first light through hole 91b reaches the polarization component 92, the light can pass through the more than two polarization elements 921 in sequence. Along the axial direction Z of the first light through hole 91b, the orthographic projections of the annular polarization zones 921b of each polarization element 921 at least partially overlap. At least one of the more than two polarization elements 921 can rotate.

[0101] For the overlapping parts of the positive projections of the annular polarization zones 921b of each polarization element 921, if the rotatable polarization element 921 is rotated so that the polarization directions of the annular polarization zones 921b of each polarization element 921 are parallel to each other, then the overlapping parts of the positive projections of the annular polarization zones 921b of each polarization element 921 can allow light to pass through the polarization component 92. At this time, the annular polarization zone 921b and the light-transmitting zone 921a of each polarization element 921 in the polarization component 92 allow light to pass through, so that the aperture of the diaphragm 90 is in a large aperture state and the amount of light transmitted is in a large mode.

[0102] For the overlapping parts of the positive projections of the annular polarization zones 921b of each polarization element 921, if the rotatable polarization element 921 is rotated so that the polarization directions of the annular polarization zones 921b of the polarization element 921 are perpendicular to each other, the overlapping parts of the positive projections of the annular polarization zones 921b of each polarization element 921 will block the light, so that the overlapping parts of the positive projections of the annular polarization zones 921b of each polarization element 921 do not allow the light to pass through the polarization component 92, while the light can be allowed to pass through the polarization component 92 in the area within the overlapping parts. At this time, the aperture of the diaphragm 90 becomes relatively smaller and the amount of light passing through is relatively reduced.

[0103] Therefore, by rotating the rotatable polarizing element 921, the light flux of the polarizing component 92 can be adjusted, thereby adjusting the size of the aperture of the diaphragm 90. The light flux of the diaphragm 90 is the light flux of the polarizing component 92.

[0104] See also Figure 6 As shown, the driving assembly 93 includes a first component 931 and a second component 932. One of the first component 931 and the second component 932 is connected to the housing 91, and the other is connected to the rotatable polarization element 921. At least one of the first component 931 and the second component 932 is an electromagnetic unit. A magnetic force can be generated between the first component 931 and the second component 932 to change the relative position of the first component 931 and the second component 932 to drive the rotatable polarization element 921 to rotate. The electromagnetic unit can generate a corresponding magnetic field when it is powered on. The electromagnetic unit does not generate a magnetic field when it is powered off. Exemplarily, the first component 931 and the second component 932 can attract or repel each other under the action of the magnetic field, thereby changing the relative position of the two. One of the first component 931 and the second component 932 can be fixed on the housing 91, that is, the relative position with the housing 91 does not change, and the other is connected to the rotatable polarization element 921, so when the relative position between the first component 931 and the second component 932 changes, the polarization element 921 can be driven to rotate synchronously.

[0105] The aperture 90 of the embodiment of the present application includes a housing 91, a polarization component 92 and a driving component 93. The polarization component 92 is arranged on the housing 91. The polarization component 92 includes more than two polarization elements 921. The polarization element 921 includes a light-transmitting area 921a and an annular polarization area 921b. The polarization elements 921 are stacked on each other, and the annular polarization areas 921b of each polarization element 921 overlap. The polarization component 92 includes a rotatable polarization element 921. After the rotatable polarization element 921 is rotated, the angle between the polarization direction of the annular polarization area 921b of the polarization element 921 and the polarization direction of the annular polarization area 921b of other polarization elements 921 can be adjusted, so that the aperture size of the aperture 90 can be adjusted by the mutual cooperation of the polarization elements 921, so that the structure for controlling the aperture size is relatively simple, which is conducive to reducing the difficulty of the assembly process. The driving component 93 is used to make the rotatable polarization element 921 generate torque to drive the rotatable polarization element 921 to rotate. The relative position change between the first component 931 and the second component 932 of the driving assembly 93 is achieved by using magnetic force, and there is no need to set up an additional transmission mechanism between the first component 931 and the second component 932, which is conducive to ensuring that the structure of the driving assembly 93 itself is relatively simple and compact, and is conducive to reducing the difficulty of the assembly process. Therefore, the overall structure of the aperture 90 of the embodiment of the present application is relatively simple, which is conducive to simplifying the assembly process and improving the product yield of the camera device 60.

[0106] In some possible implementations, see Figure 5 and Figure 6 As shown, the aperture 90 also includes a flexible printed circuit board 96 (Flexible Printed Circuit Board, FPCB). At least part of the flexible printed circuit board 96 is arranged on the outer peripheral surface of the annular side plate 912, so that the outer peripheral surface of the housing 91 can be utilized, which is conducive to reducing the space occupancy rate of the flexible printed circuit board 96. Exemplarily, the flexible printed circuit board 96 and the annular side plate 912 can be bonded using an adhesive. For example, the adhesive can be a double-sided tape or an adhesive. The electromagnetic unit is electrically connected to the flexible printed circuit board 96. The electromagnetic unit includes two conductive leads 935. The conductive leads 935 can pass through the housing 91 and be electrically connected to the flexible printed circuit board 96. Exemplarily, both ends of the coil 934 in the electromagnetic unit can be electrically connected to the conductive leads 935. For example, the coil 934 and the conductive leads 935 can be an integrally formed structure.

[0107] In some achievable ways, Fig.10 The partially exploded structure of the polarization component 92 is schematically shown. Fig.10As shown, the polarization component 92 may include two polarization elements 921. One polarization element 921 is rotatably disposed on the housing 91, and the relative position of the other polarization element 921 to the housing 91 is fixed. The initial state of the aperture 90 is described by taking the polarization directions of the annular polarization areas 921b of the rotatable polarization element 921 and the fixed polarization element 921 as an example. When the polarization directions of the annular polarization areas 921b of the rotatable polarization element 921 and the fixed polarization element 921 are parallel to each other, light can pass through the annular polarization area 921b and the light-transmitting area 921a of the polarization element 921. At this time, the aperture of the aperture 90 is the largest and the amount of light passing is the largest. Fig.11 The partially exploded structure of the polarization component 92 is schematically shown. Fig.11 As shown, a torque is applied to the rotatable polarization element 921 to rotate the rotatable polarization element 921. For example, the rotation angle of the rotatable polarization element 921 can be 90°, and the polarization directions of the annular polarization zones 921b of the rotatable polarization element 921 and the fixed polarization element 921 are in a mutually perpendicular state. At this time, the overlapping portion of the annular polarization zones 921b of the polarization element 921 blocks the light and does not allow the light to pass through the polarization component 92, while the area within the overlapping portion allows the light to pass through, so that the aperture of the diaphragm 90 becomes smaller and the amount of light passing is reduced. In some examples, along the axial direction Z of the first light hole 91b, the orthographic projections of the annular polarization zones 921b of the two polarization elements 921 can completely overlap.

[0108] In some achievable ways, Fig.12 The partially exploded structure of the polarization component 92 is schematically shown. Fig.12 As shown, the polarization component 92 may include three polarization elements 921. The relative position of one polarization element 921 and the housing 91 is fixed, and the other two polarization elements 921 are rotatable polarization elements 921. The two rotatable polarization elements 921 may be arranged on one side of the fixed polarization element 921. Along the axial direction Z of the first light through hole 91b, the annular polarization area 921b of the fixed polarization element 921 and the outermost rotatable polarization element 921 may be completely overlapped, while the annular polarization area 921b of the polarization element 921 located in the middle and the outermost rotatable polarization element 921 may be partially overlapped. The diameters of the light-transmitting areas 921a of the fixed polarization element 921 and the outermost rotatable polarization element 921 are equal. The diameter of the light-transmitting area 921a of the polarization element 921 located in the middle is larger than the diameter of the light-transmitting area 921a of the outermost rotatable polarization element 921.

[0109] For the convenience of illustration, the fixed polarization element 921 is taken as the first element, the polarization direction of the annular polarization zone 921b of the fixed polarization element 921 is the first polarization direction, the middle polarization element 921 is the second element, the polarization direction of the annular polarization zone 921b of the middle polarization element 921 is the second polarization direction, the outermost rotatable polarization element 921 is the third element, and the polarization direction of the annular polarization zone 921b of the outermost rotatable polarization element 921 is the third polarization direction.

[0110] See also Fig.12 As shown, when the first polarization direction, the second polarization direction and the third polarization direction are parallel to each other, the light can pass through the annular polarization area 921b and the light transmission area 921a of each polarization element 921. At this time, the aperture of the diaphragm 90 is the largest and the light transmission amount is the largest.

[0111] Fig.13 The partially exploded structure of the polarization component 92 is schematically shown. Fig.13 As shown, the second element is rotated, when the first polarization direction and the third polarization direction are parallel to each other, and the first polarization direction and the third polarization direction are respectively perpendicular to the second polarization direction, the area on the polarization component 92 corresponding to the annular polarization area 921b of the second element can block light, while the area within the annular polarization area 921b of the second element can allow light to pass through, that is, the light-transmitting area 921a of the second element, the area on the first element corresponding to the light-transmitting area 921a of the second element, and the area on the third element corresponding to the light-transmitting area 921a of the second element can allow light to pass through, at this time, the aperture of the diaphragm 90 becomes smaller, and the amount of light passing through is reduced. Exemplarily, the rotation angle of the second element can be 90°.

[0112] Fig.14 The partially exploded structure of the polarization component 92 is schematically shown. Fig.14 As shown, the third element is rotated, when the first polarization direction and the third polarization direction are perpendicular to each other, and one of the first polarization direction and the third polarization direction is parallel to the second polarization direction, and the other is perpendicular to the second polarization direction, the area corresponding to the annular polarization area 921b of the first element on the polarization component 92 can block light, and the area within the annular polarization area 921b of the first element can allow light to pass through, that is, the light-transmitting area 921a of the first element, the partial light-transmitting area 921a of the second element, and the light-transmitting area 921a of the third element can allow light to pass through, at this time, the aperture of the diaphragm 90 becomes smaller, and the amount of light passing through is reduced. Exemplarily, the rotation angle of the third element can be 90°.

[0113] Fig.15 The partial exploded structure of the aperture 90 is schematically shown. Figure 6 and Fig.15As shown, the aperture 90 also includes a limit bracket 94. The limit bracket 94 is arranged in the accommodating cavity 91a of the housing 91. The limit bracket 94 is connected to the housing 91. The polarization component 92 is arranged on the limit bracket 94. The limit bracket 94 includes a through hole 941. The through hole 941 penetrates the limit bracket 94 along the axial direction Z of the first light through hole 91b. The first light through hole 91b, the through hole 941 and the second light through hole 91c are correspondingly arranged. Exemplarily, the axis of the through hole 941 can coincide with the axis of the first light through hole 91b. At least part of the polarization component 92 is located in the through hole 941 of the limit bracket 94. When the rotatable polarization element 921 is subjected to torque, the rotatable polarization element 921 can rotate relative to the limit bracket 94. The limit bracket 94 can provide a limit for the polarization component 92 to ensure that the position accuracy of the polarization component 92 meets the requirements and the stability and reliability of the installation position. Exemplarily, the limiting bracket 94 is detachably connected to the housing 91. For example, the limiting bracket 94 and the housing 91 can be connected using fasteners such as screws.

[0114] Along the radial direction of the through hole 941, the driving component 93 is arranged on the outer side of the limiting bracket 94 facing away from the polarization component 92, that is, the first component 931 and the second component 932 are located on the outer side of the limiting bracket 94. The radial direction of the through hole 941 refers to the direction perpendicular to the axial direction of the through hole 941. The limiting bracket 94 includes an escape portion 942. The escape portion 942 penetrates the limiting bracket 94 along the radial direction of the through hole 941. The escape portion 942 is connected to the through hole 941. Exemplarily, the escape portion 942 can be an escape hole or an escape groove. The polarization component 92 also includes a connecting arm 921c. At least part of the connecting arm 921c is located in the escape portion 942. One end of the connecting arm 921c is connected to the rotatable polarization element 921, and the other end is connected to one of the first component 931 and the second component 932. The polarization element 921 and the connecting arm 921c both have good rigidity so that they are not easily deformed when bearing torque. Exemplarily, the connecting arm 921c and the rotatable polarizing element 921 may be an integrally formed structure. Exemplarily, the connecting arm 921c is bonded to one of the first component 931 and the second component 932, which is beneficial to reduce the number of parts used.

[0115] Fig.16 The cross-sectional structure of the limiting bracket 94 is schematically shown. Figure 8 and Fig.16As shown, the through hole 941 of the limiting bracket 94 can be a stepped hole. The through hole 941 includes a hole segment 941a and a step surface 941b connected between two adjacent hole segments 941a. The diameters of the hole segments 941a in the through hole 941 are different. The number of polarizing elements 921 is set in a one-to-one correspondence with the number of hole segments 941a. The polarizing element 921 is set in the hole segment 941a. A polarizing element 921 is correspondingly set in each hole segment 941a. The polarizing element 921 contacts the inner wall of the hole segment 941a, so that the limiting bracket 94 can limit the polarizing element 921 in the radial direction of the through hole 941. During the rotation of the rotatable polarizing element 921, since the polarizing element 921 contacts the inner wall of the hole segment 941a, the position of the polarizing element 921 in the limiting bracket 94 can remain stable and is not easy to deviate along the radial direction of the through hole 941.

[0116] Exemplarily, the outer diameter of the polarizing element 921 is equal to the diameter of the corresponding hole segment 941a. Exemplarily, in the direction away from the first light-through hole 91b, the diameter of each hole segment 941a of the through hole 941 increases. Accordingly, the outer diameter of each polarizing element 921 gradually increases. Along the axial direction of the through hole 941, the step surface 941b between two adjacent hole segments 941a can be used to provide a limit for the polarizing element 921 located in the hole segment 941a with a larger diameter, thereby reducing the possibility of mutual extrusion of each polarizing element 921 along the axial direction of the through hole 941.

[0117] In some examples, the diameter of the first light-through hole 91b is smaller than the diameter of the through hole 941. The hole segment 941a with the smallest diameter in the through hole 941 is arranged facing the first light-through hole 91b, and the diameter of the first light-through hole 91b is smaller than the diameter of the hole segment 941a. Since the polarizing element 921 with the smallest outer diameter is located in the hole segment 941a with the smallest diameter, the edge portion of the polarizing element 921 with the smallest outer diameter is located below the housing 91, so that there is an overlapping area between the polarizing element 921 and the housing 91. The housing 91 can limit the polarizing element 921 arranged near the first light-through hole 91b, reducing the possibility of the polarizing element 921 exiting from the through hole 941 along the axial direction of the through hole 941.

[0118] In some examples, the polarization component 92 may include three polarization elements 921. The diameter of the light-transmitting area 921a of the polarization element 921 near the first light hole 91b and the diameter of the light-transmitting area 921a of the polarization element 921 near the second light hole 91c are both smaller than the diameter of the light-transmitting area 921a of the middle polarization element 921. The diameter of the light-transmitting area 921a of the polarization element 921 near the first light hole 91b may be equal to the diameter of the light-transmitting area 921a of the polarization element 921 near the second light hole 91c. The polarization element 921 near the first light hole 91b and the middle polarization element 921 are rotatable. The polarization element 921 near the second light hole 91c may be connected to the limiting bracket 94 and keep the position fixed. By rotating at least one of the polarization element 921 near the first light hole 91b and the middle polarization element 921, the aperture size of the diaphragm 90 can be adjusted.

[0119] Exemplarily, the first light hole 91b is a light inlet hole, and the second light hole 91c is a light outlet hole, so that external light is incident from the first light hole 91b of the housing 91, passes through the polarization component 92, and then exits from the second light hole 91c. The diameter of the first light hole 91b is greater than the diameter of the light-transmitting area 921a of the middle polarizing element 921. Exemplarily, for the middle polarizing element 921, at least part of the annular polarizing area 921b is arranged corresponding to the first light hole 91b.

[0120] Exemplarily, the outer diameter of the annular polarization zone 921b of the polarization element 921 near the first light through hole 91b may be equal to the diameter of the first light through hole 91b. The outer diameter of the annular polarization zone 921b of the middle polarization element 921 may be equal to the diameter of the first light through hole 91b. The outer diameter of the annular polarization zone 921b of the polarization element 921 near the second light through hole 91c may be equal to the diameter of the first light through hole 91b.

[0121] See also Figure 6 and Fig.15As shown, the housing 91 includes a first plate 911, an annular side plate 912 and a second plate 913. The first light-through hole 91b is provided in the first plate 911. Along the axial direction Z of the first light-through hole 91b, the first plate 911 and the second plate 913 are respectively located on both sides of the annular side plate 912. At least one of the first plate 911 and the second plate 913 is connected to the limiting bracket 94. Exemplarily, the first plate 911 can limit the polarizing element 921 provided near the first light-through hole 91b, thereby reducing the possibility that the polarizing element 921 exits from the through hole 941 along the axial direction of the through hole 941. The second light-through hole 91c is provided in the second plate 913. Exemplarily, the diameter of the first light-through hole 91b is smaller than the diameter of the second light-through hole 91c. Exemplarily, the diameter of the second light-through hole 91c can be smaller than the diameter of the hole section 941a in the through hole 941 near the second light-through hole 91c. Since the polarizing element 921 with the largest outer diameter is located in the hole segment 941a with the largest diameter, the edge portion of the polarizing element 921 with the largest outer diameter is located on the inner side of the second plate 913, so that there is an overlapping area between the polarizing element 921 and the second plate 913. The second plate 913 can limit the polarizing element 921 disposed near the second light-through hole 91c, thereby reducing the possibility of the polarizing element 921 exiting from the through hole 941 along the axial direction of the through hole 941.

[0122] In some examples, the limiting bracket 94 is connected to the first plate 911. Exemplarily, the limiting bracket 94 is detachably connected to the first plate 911. For example, the limiting bracket 94 and the first plate 911 can be connected using fasteners such as screws.

[0123] In some examples, the annular side plate 912 and the second plate body 913 may be an integrally formed structure. The first plate body 911 and the annular side plate 912 may be connected by bonding.

[0124] In some examples, the first plate body 911 and the second plate body 913 may both be circular structures. The annular side plate 912 may be a circular ring structure.

[0125] In some examples, there is a distance between the limiting bracket 94 and the annular side plate 912 along the radial direction of the through hole 941. The driving assembly 93 is disposed in the accommodating cavity 91a of the housing 91, so that the housing 91 can provide protection for the driving assembly 93. The first component 931 and the second component 932 of the driving assembly 93 can be disposed between the limiting bracket 94 and the annular side plate 912. Exemplarily, the limiting bracket 94 can be annular. For example, the limiting bracket 94 can be a circular ring structure.

[0126] In some examples, the polarization assembly 92 may include three polarization elements 921. The polarization element 921 near the first light through hole 91b and the middle polarization element 921 are rotatable. The limiting bracket 94 is provided with an avoidance portion 942 in a region corresponding to the polarization element 921 near the first light through hole 91b. For example, the avoidance portion 942 may be an avoidance groove. The limiting bracket 94 is provided with an avoidance portion 942 in a region corresponding to the middle polarization element 921. For example, the avoidance portion 942 may be an avoidance hole.

[0127] The polarizing element 921 near the second light through hole 91c can be mounted and fixed on the limiting bracket 94, so that the relative position of the polarizing element 921 near the second light through hole 91c and the limiting bracket 94 is fixed and does not rotate. Exemplarily, a limiting recess (not shown in the figure) is provided on the inner wall of the hole segment 941a with the largest diameter on the limiting bracket 94. The limiting recess is connected to the hole segment 941a with the largest diameter. The polarization component 92 also includes a limiting convex portion (not shown in the figure). The polarizing element 921 near the second light through hole 91c is connected to the limiting convex portion. At least part of the limiting convex portion is located in the limiting recess of the limiting bracket 94, so that the limiting bracket 94 and the limiting convex portion can constrain and limit the polarizing element 921 near the second light through hole 91c, so that the position of the polarizing element 921 near the second light through hole 91c is fixed and not easy to rotate.

[0128] For some examples, see Fig.15 As shown, the aperture 90 further includes a rolling body 95. At least the polarization element 921 close to the first plate 911 in the polarization assembly 92 is rotatable. A rolling body 95 is provided between the polarization element 921 close to the first plate 911 and the first plate 911. Exemplarily, the rolling body 95 may be a ball. During the rotation of the polarization element 921 close to the first plate 911, there is rolling friction between the polarization element 921 and the first plate 911, which is beneficial to reducing the rotation resistance of the polarization element 921. Along the axial direction Z of the first light-through hole 91b, there is a spacing between the polarization element 921 close to the first plate 911 and the first plate 911, so that the polarization element 921 close to the first plate 911 will not come into direct contact with the first plate 911, which is beneficial to reducing the possibility of wear of the polarization element 921 due to friction between the polarization element 921 and the first plate 911 during the reciprocating rotation of the polarization element 921.

[0129] For example, Fig.17 The structure of the first plate 911 is schematically shown. Fig.15 and Fig.17As shown, one of the polarizing element 921 near the first plate 911 and the first plate 911 is provided with an annular guide groove 100, and the other is provided with a limiting groove 110. A rolling body 95 is arranged between the annular guide groove 100 and the limiting groove 110. The limiting groove 110 can limit the rolling body 95 to prevent the rolling body 95 from shifting in position following the movement of the rotating polarizing element 921. The number of limiting grooves 110 can be more than three. Along the circumference of the first light-through hole 91b, more than three limiting grooves 110 are arranged around the first light-through hole 91b. More than three limiting grooves 110 can be evenly distributed, which is conducive to ensuring that the polarizing element 921 is balanced in force. The number of limiting grooves 110 can be arranged in a one-to-one correspondence with the number of rolling bodies 95, that is, each limiting groove 110 can be arranged with a corresponding rolling body 95. For example, the number of limiting grooves 110 can be the same as the number of rolling bodies 95, but is not limited to three. Exemplarily, an annular guide groove 100 is disposed on the polarization element 921 close to the first plate body 911 , and a limiting groove 110 is correspondingly disposed on the first plate body 911 .

[0130] For some examples, see Fig.15 As shown, in the polarization component 92, a rolling body 95 is arranged between the rotatable polarization element 921 and the adjacent polarization element 921. Exemplarily, the rolling body 95 can be a ball. During the rotation of the rotatable polarization element 921, there is rolling friction between two adjacent polarization elements 921, which is conducive to reducing the rotation resistance of the polarization element 921. Along the axial direction Z of the first light-through hole 91b, there is a spacing between two adjacent polarization elements 921, so that the two adjacent polarization elements 921 will not come into direct contact, which is conducive to reducing the possibility of wear of the polarization element 921 caused by friction between the two adjacent polarization elements 921 during the reciprocating rotation of the rotatable polarization element 921.

[0131] Exemplarily, one of the rotatable polarizing element 921 and the adjacent polarizing element 921 is provided with an annular guide groove 100, and the other is provided with a limiting groove 110. A rolling body 95 is provided between the annular guide groove 100 and the limiting groove 110. The number of limiting grooves 110 may be more than three. Along the circumference of the first light-through hole 91b, more than three limiting grooves 110 are provided around the first light-through hole 91b. More than three limiting grooves 110 may be evenly distributed, so as to help ensure that the rotatable polarizing element 921 is subjected to balanced force. For example, the number of limiting grooves 110 may be the same as the number of rolling bodies 95, but not limited to three. Exemplarily, the limiting groove 110 is provided on the polarizing element 921 close to the first plate body 911, and the annular guide groove 100 is provided on the polarizing element 921 away from the first plate body 911. The opening of the annular guide groove 100 may face the first plate body 911, and the opening of the limiting groove 110 may face away from the first plate body 911.

[0132] In some achievable ways, the first component 931 is an electromagnetic unit, and the second component 932 is a magnet. The electromagnetic unit can generate a corresponding magnetic field when powered on, so that a magnetic force, such as a repulsive force or an attractive force, can be generated between the first component 931 and the second component 932. The electromagnetic unit does not generate a magnetic field when powered off. The first component 931 can be connected to the housing 91. Exemplarily, the first component 931 can be connected to the housing 91 by bonding. For example, the first component 931 can be connected to at least one of the annular side plate 912 and the second plate body 913 of the housing 91 by bonding. The second component 932 can be connected to the rotatable polarizing element 921. The second component 932 can be connected to the rotatable polarizing element 921 through a connecting arm 921c. For example, the connecting arm 921c can be connected to the second component 932 by bonding. The second component 932 can be a permanent magnet, for example, including but not limited to a neodymium iron boron magnet or an aluminum nickel cobalt magnet. By controlling the current in the electromagnetic unit, the magnetic force generated by the electromagnetic unit can be controlled, thereby generating a driving force to drive the second component 932 to drive the second component 932 to rotate around the axis of the first light hole 91b, and the second component 932 synchronously drives the polarization element 921 to rotate.

[0133] In some examples, Fig.18 The partial structure of the aperture 90 is schematically shown. Fig.15 and Fig.18 As shown, the electromagnetic unit includes a magnetic core 933 and a coil 934. The magnetic core 933 is located inside the coil 934. The coil 934 is wound around the magnetic core 933. The second component 932 is a permanent magnet, so that after the second component 932 contacts the magnetic core 933, the second component 932 can be adsorbed on the magnetic core 933. For example, the material of the coil 934 can be, but not limited to, copper or copper alloy. The magnetic core 933 can be, but not limited to, an iron core.

[0134] After the electromagnetic unit is powered on, suction can be generated between the electromagnetic unit and the second component 932, so that the second component 932 rotates toward the electromagnetic unit. After the second component 932 contacts the magnetic core 933 of the electromagnetic unit, the second component 932 stops rotating, and the polarization element 921 connected to the second component 932 rotates to a predetermined position. Since the second component 932 can be adsorbed on the magnetic core 933, the electromagnetic unit can be powered off, so that when the electromagnetic unit is in a powered-off state, the position of the second component 932 will not change, so that the polarization element 921 can be stably maintained at the current position, and the aperture 90 can be maintained in the current aperture state.

[0135] In some examples, the polarization assembly 92 may include three polarization elements 921. One polarization element 921 is fixed, and the other two polarization elements 921 are rotatable. The two first components 931 are symmetrically arranged relative to the axis of the first light-through hole 91b. The two rotatable polarization elements 921 are each connected to a second component 932. The first components 931 and the second components 932 are alternately arranged along the circumference of the first light-through hole 91b.

[0136] An arc-shaped guide space 120 is formed between the limiting bracket 94 and the housing 91. The two guide spaces 120 are symmetrically arranged relative to the axis of the first light-through hole 91b. The second component 932 is arranged in the guide space 120. A second component 932 can be arranged in each guide space 120. When the second component 932 is subjected to a torque, the second component 932 can move from one of the first components 931 to another first component 931 along the corresponding guide space 120.

[0137] The first component 931 is an arc-shaped structure. The size of the first component 931 is one-quarter of the circumference. The size of the guide space 120 is one-quarter of the circumference. Therefore, when the second component 932 moves from one of the first components 931 to the other first component 931, the rotation angle of the second component 932 can be 90°. In the embodiment of the present application, the two first components 931 are symmetrically arranged, and the rotation angle of the second component 932 can be accurately limited by the first component 931, and there is no need to set an additional angle detection structure to detect the rotation angle of the second component 932. At the same time, the second component 932 can be adsorbed on the magnetic core 933, so that the position can be kept stable and the current aperture state can be ensured to be stable. On the one hand, there is no need to set an additional limit structure to fix the position of the second component 932. Therefore, the first component 931 is an electromagnetic unit, and the second component 932 is a magnet. The arrangement method is conducive to simplifying the overall structure of the aperture 90; on the other hand, the limit position of the second component 932 after rotation can be accurately controlled, which is conducive to improving the control accuracy of the aperture size.

[0138] In some examples, the second component 932 has an S pole and an N pole. Along the circumference of the first light-through hole 91b, the two second components 932 may be arranged such that the S pole of one second component 932 faces the S pole of the other second component 932, and correspondingly, the N pole of one second component 932 faces the N pole of the other second component 932. When the two first components 931 are powered on, the first component 931 has an S pole and an N pole.

[0139] For example, Fig.19 The local structure of the aperture 90 is schematically shown. Fig.18 and Fig.19 The structure shown is used as an example. Fig.18As shown, the two first components 931 at the upper left corner and the lower right corner are in a power-off state, and one end of the magnetic core 933 in the first component 931 at the upper left corner is attracted to the second component 932 on the left, and the other end is attracted to the second component 932 on the right.

[0140] See also Fig.19 As shown, the two first components 931 are switched to the power-on state, and the N pole of the first component 931 in the upper left corner corresponds to the S pole of the second component 932 on the left side, so that an attraction is generated between the first component 931 in the upper left corner and the second component 932 on the left side, ensuring that one end of the magnetic core 933 and the second component 932 on the left side maintain a state of mutual adsorption, and the S pole of the first component 931 in the upper left corner corresponds to the S pole of the second component 932 on the right side, so that a repulsive force is generated between the first component 931 in the upper left corner and the second component 932 on the right side. Under the action of the repulsive force, the first component 931 in the upper left corner pushes the second component 932 on the right side to separate from the magnetic core 933, and the second component 932 moves clockwise in the guide space 120 toward the first component 931 in the lower right corner. When the second component 932 on the right side moves to the predetermined position, suction is generated between the first component 931 at the lower right corner and the second component 932 on the right side, so that the first component 931 at the lower right corner pulls the second component 932 on the right side to move until the second component 932 on the right side and the magnetic core 933 of the first component 931 at the lower right corner are attracted to each other to complete the rotation process of the corresponding polarization element 921.

[0141] For example, Fig. 20 The local structure of the aperture 90 is schematically shown. Fig.18 and Fig. 20 The structure shown is used as an example. Fig.18 As shown, the two first components 931 at the upper left corner and the lower right corner are in a power-off state, and one end of the magnetic core 933 in the first component 931 at the upper left corner is attracted to the second component 932 on the left, and the other end is attracted to the second component 932 on the right.

[0142] See also Fig.18 and Fig. 20As shown, the first component 931 in the upper left corner is switched to the power-on state, while the first component 931 in the lower right corner remains in the power-off state. The N pole of the first component 931 in the upper left corner corresponds to the S pole of the second component 932 on the left side, so that an attraction force is generated between the first component 931 in the upper left corner and the second component 932 on the left side, ensuring that one end of the magnetic core 933 and the second component 932 on the left side remain in a state of mutual adsorption. The S pole of the first component 931 in the upper left corner corresponds to the S pole of the second component 932 on the right side, so that a repulsive force is generated between the first component 931 in the upper left corner and the second component 932 on the right side. Under the action of the repulsive force, the first component 931 in the upper left corner pushes the second component 932 on the right side to separate from the magnetic core 933, and the second component 932 moves clockwise toward the first component 931 in the lower right corner in the guide space 120. When the second component 932 on the right side moves to the predetermined position, suction is generated between the magnetic core 933 of the first component 931 at the lower right corner and the second component 932 on the right side, so that the first component 931 at the lower right corner pulls the second component 932 on the right side to move until the second component 932 on the right side and the magnetic core 933 of the first component 931 at the lower right corner are attracted to each other to complete the rotation process of the corresponding polarization element 921.

[0143] For example, Fig.21 as well as Fig. 22 The local structures of the aperture 90 are schematically shown respectively. Fig.21 and Fig. 22 The structure shown is used as an example. Fig.21 and Fig. 22 As shown, the magnetic core 933 in the first component 931 in the upper left corner and the second component 932 on the left side are mutually adsorbed. The magnetic core 933 in the first component 931 in the lower right corner and the second component 932 on the right side are mutually adsorbed. The first component 931 in the lower right corner is switched to the power-on state, while the first component 931 in the upper left corner remains in the power-off state. The N pole of the first component 931 in the lower right corner corresponds to the N pole of the second component 932 on the right side, so that a repulsive force is generated between the first component 931 in the lower right corner and the second component 932 on the right side. Under the action of the repulsive force, the first component 931 in the lower right corner pushes the second component 932 on the right side to separate from the magnetic core 933, and the second component 932 moves counterclockwise toward the first component 931 in the upper left corner in the guide space 120. When the second component 932 on the right side moves to the predetermined position, suction is generated between the magnetic core 933 of the first component 931 at the upper left corner and the second component 932 on the right side, so that the first component 931 at the upper left corner pulls the second component 932 on the right side to move until the second component 932 on the right side and the magnetic core 933 of the first component 931 at the upper left corner are attracted to each other to complete the rotation process of the corresponding polarization element 921.

[0144] For example, Fig.23The local structure of the aperture 90 is schematically shown. Fig.18 and Fig.23 The structure shown is used as an example. Fig.18 As shown, the two first components 931 at the upper left corner and the lower right corner are in a power-off state, and one end of the magnetic core 933 in the first component 931 at the upper left corner is attracted to the second component 932 on the left, and the other end is attracted to the second component 932 on the right.

[0145] See also Fig.23 As shown, the two first components 931 are switched to the power-on state, and the N pole of the first component 931 in the upper left corner corresponds to the S pole of the second component 932 on the right side, so that an attraction is generated between the first component 931 in the upper left corner and the second component 932 on the right side, ensuring that one end of the magnetic core 933 and the second component 932 on the right side maintain a state of mutual adsorption, and the S pole of the first component 931 in the upper left corner corresponds to the S pole of the second component 932 on the left side, so that a repulsive force is generated between the first component 931 in the upper left corner and the second component 932 on the left side. Under the action of the repulsive force, the first component 931 in the upper left corner pushes the second component 932 on the left side to separate from the magnetic core 933, and the second component 932 moves counterclockwise in the guide space 120 toward the first component 931 in the lower right corner. When the second component 932 on the left side moves to a predetermined position, suction is generated between the first component 931 at the lower right corner and the second component 932 on the left side, so that the first component 931 at the lower right corner pulls the second component 932 on the left side to move until the second component 932 on the left side and the magnetic core 933 of the first component 931 at the lower right corner are attracted to each other to complete the rotation process of the corresponding polarization element 921.

[0146] For example, Fig.24 The local structure of the aperture 90 is schematically shown. Fig.18 and Fig.24 The structure shown is used as an example. Fig.18 As shown, the two first components 931 at the upper left corner and the lower right corner are in a power-off state, and one end of the magnetic core 933 in the first component 931 at the upper left corner is attracted to the second component 932 on the left, and the other end is attracted to the second component 932 on the right.

[0147] See also Fig.24As shown, the first component 931 in the upper left corner is switched to the power-on state, while the first component 931 in the lower right corner remains in the power-off state. The N pole of the first component 931 in the upper left corner corresponds to the S pole of the second component 932 on the right side, so that an attraction force is generated between the first component 931 in the upper left corner and the second component 932 on the right side, ensuring that one end of the magnetic core 933 and the second component 932 on the right side remain in a state of mutual adsorption. The S pole of the first component 931 in the upper left corner corresponds to the S pole of the second component 932 on the left side, so that a repulsive force is generated between the first component 931 in the upper left corner and the second component 932 on the left side. Under the action of the repulsive force, the first component 931 in the upper left corner pushes the second component 932 on the left side to separate from the magnetic core 933, and the second component 932 moves counterclockwise in the guide space 120 toward the first component 931 in the lower right corner. When the second component 932 on the left side moves to the predetermined position, suction is generated between the magnetic core 933 of the first component 931 at the lower right corner and the second component 932 on the left side, so that the first component 931 at the lower right corner pulls the second component 932 on the left side to move until the second component 932 on the left side and the magnetic core 933 of the first component 931 at the lower right corner are attracted to each other to complete the rotation process of the corresponding polarization element 921.

[0148] For example, Fig.25 The local structure of the aperture 90 is schematically shown. Fig.25 The structure shown is used as an example. The magnetic core 933 in the first component 931 in the upper left corner and the second component 932 on the right side are mutually attracted. The magnetic core 933 in the first component 931 in the lower right corner and the second component 932 on the left side are mutually attracted. The first component 931 in the lower right corner is switched to the power-on state, while the first component 931 in the upper left corner remains in the power-off state. The N pole of the first component 931 in the lower right corner corresponds to the N pole of the second component 932 on the left side, so that a repulsive force is generated between the first component 931 in the lower right corner and the second component 932 on the left side. Under the action of the repulsive force, the first component 931 in the lower right corner pushes the second component 932 on the left side to separate from the magnetic core 933, and the second component 932 moves clockwise toward the first component 931 in the upper left corner in the guide space 120. When the second component 932 on the left side moves to the predetermined position, suction is generated between the magnetic core 933 of the first component 931 at the upper left corner and the second component 932 on the left side, so that the first component 931 at the upper left corner pulls the second component 932 on the left side to move until the second component 932 on the left side and the magnetic core 933 of the first component 931 at the upper left corner are attracted to each other to complete the rotation process of the corresponding polarization element 921.

[0149] The second component 932 on the left side can be connected to the polarizing element 921 in the middle through the connecting arm 921c. The limiting bracket 94 is provided with a avoidance portion 942 corresponding to the second component 932 on the left side, for example, the avoidance portion 942 is a avoidance hole. The second component 932 on the right side can be connected to the polarizing element 921 near the first light-through hole 91b through the connecting arm 921c. The limiting bracket 94 is provided with a avoidance portion 942 corresponding to the second component 932 on the right side, for example, the avoidance portion 942 is a avoidance groove. Through the mutual cooperation of the first component 931 and the second component 932, different polarizing elements 921 can be rotated, so that the aperture size of the diaphragm 90 can be adjusted and the amount of light passing through the diaphragm 90 can be changed.

[0150] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0151] The embodiments of the present application do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise precisely and specifically specified.

[0152] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the embodiments of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0153] The term "plurality" in this article refers to two or more than two. The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the previous and next associated objects are in an "or" relationship; in a formula, the character " / " indicates that the previous and next associated objects are in a "division" relationship.

[0154] It should be understood that the various numerical numbers involved in the embodiments of the present application are only used for the convenience of description and are not used to limit the scope of the embodiments of the present application.

[0155] It can be understood that in the embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

Claims

1. A diaphragm, characterized in that: At least: A housing, comprising a housing cavity, a first light through hole and a second light through hole, wherein the first light through hole and the second light through hole are respectively connected to the housing cavity; A polarization component is disposed in the accommodating cavity, the polarization component is connected to the housing, the polarization component is disposed on the optical path from the first light through hole to the second light through hole, the polarization component comprises more than two polarization elements, and along the axial direction of the first light through hole, the more than two polarization elements are stacked and arranged, the polarization element comprises a light-transmitting area and an annular polarization area, the annular polarization area is arranged around the light-transmitting area, and along the axial direction of the first light through hole, the orthographic projections of the annular polarization areas of each polarization element at least partially overlap, and at least one of the more than two polarization elements is rotatable; A driving assembly, comprising a first component and a second component, one of the first component and the second component is connected to the housing, and the other is connected to the rotatable polarization element, at least one of the first component and the second component is an electromagnetic unit, and a magnetic force is generated between the first component and the second component to change the relative position of the first component and the second component to drive the rotatable polarization element to rotate; The diaphragm further comprises a limiting bracket, the limiting bracket is arranged in the accommodating cavity, the limiting bracket is connected to the housing, the limiting bracket comprises a through hole, the polarization component is arranged in the limiting bracket, and at least a part of the polarization component is located in the through hole; The driving assembly is arranged on the outer side of the limiting bracket facing away from the polarization assembly along the radial direction of the through hole, the limiting bracket comprises a avoiding portion, the avoiding portion penetrates the limiting bracket along the radial direction of the through hole, the avoiding portion is communicated with the through hole, the polarization assembly further comprises a connecting arm, at least a part of the connecting arm is located in the avoiding portion, one end of the connecting arm is connected to the rotatable polarization element, and the other end is connected to one of the first component and the second component; The housing comprises a first plate, an annular side plate and a second plate, the first light-through hole is arranged in the first plate, the second light-through hole is arranged in the second plate, along the axial direction of the first light-through hole, the first plate and the second plate are respectively located on both sides of the annular side plate, and at least one of the first plate and the second plate is connected to the limit bracket; The aperture also includes a rolling body. At least the polarization element close to the first plate body in the polarization assembly is rotatable, and the rolling body is arranged between the polarization element close to the first plate body and the first plate body. Along the axial direction of the first light-transmitting hole, there is a distance between the polarization element close to the first plate body and the first plate body.

2. The aperture according to claim 1, characterized in that The through hole is a stepped hole, comprising a hole segment and a stepped surface connected between two adjacent hole segments. The number of the polarization elements is arranged in one-to-one correspondence with the number of the hole segments. The polarization element is arranged in the hole segment and contacts the inner wall of the hole segment.

3. The aperture according to claim 2, characterized in that The diameter of the first light-transmitting hole is smaller than the diameter of the through hole.

4. The diaphragm according to any one of claims 1 to 3, characterized in that The polarization component includes three polarization elements.

5. The diaphragm according to claim 4, characterized in that The diameter of the light-transmitting area of ​​the polarization element near the first light hole and the diameter of the light-transmitting area of ​​the polarization element near the second light hole are both smaller than the diameter of the light-transmitting area of ​​the polarization element in the middle, the diameter of the light-transmitting area of ​​the polarization element near the first light hole is equal to the diameter of the light-transmitting area of ​​the polarization element near the second light hole, and the polarization element near the first light hole and the polarization element in the middle are rotatable.

6. The diaphragm according to claim 5, characterized in that The first light hole is a light inlet hole, the second light hole is a light outlet hole, and the diameter of the first light hole is larger than the diameter of the light-transmitting area of ​​the polarizing element in the middle.

7. The diaphragm according to any one of claims 1 to 3, 5 and 6, characterized in that: One of the polarizing element close to the first plate and the first plate is provided with an annular guide groove, and the other is provided with a limiting groove, and the rolling body is provided between the annular guide groove and the limiting groove.

8. The diaphragm according to any one of claims 1 to 3, 5 and 6, characterized in that: The driving assembly is arranged in the accommodating cavity, the limiting bracket is annular, and the first component and the second component are arranged between the limiting bracket and the annular side plate.

9. The diaphragm according to any one of claims 1 to 3, 5 and 6, characterized in that: The aperture further includes a rolling body, and the rolling body is arranged between the rotatable polarization element and the adjacent polarization element.

10. The aperture according to claim 9, characterized in that One of the rotatable polarizing element and the adjacent polarizing element is provided with an annular guide groove, and the other is provided with a limiting groove, and the rolling body is provided between the annular guide groove and the limiting groove.

11. The diaphragm according to any one of claims 1 to 3, 5, 6, and 10, characterized in that: The first component is the electromagnetic unit, the second component is a magnet, the first component is connected to the housing, and the second component is connected to the rotatable polarization element.

12. The aperture according to claim 11, characterized in that The electromagnetic unit comprises a magnetic core and a coil, wherein the magnetic core is located inside the coil.

13. The aperture according to claim 12, characterized in that The polarization component includes three polarization elements, wherein one polarization element is fixed in position, two polarization elements are rotatable, and the two first components are symmetrically arranged relative to the axis of the first light-transmitting hole. The two rotatable polarization elements are each connected to a second component, and the first components and the second components are alternately arranged along the circumference of the first light-transmitting hole.

14. The diaphragm according to claim 11, characterized in that The first component is an arc-shaped structure.

15. The diaphragm according to any one of claims 1 to 3, 5, 6, 10, 12 to 14, characterized in that The aperture further includes a flexible circuit board, at least a portion of which is disposed on the outer peripheral surface of the annular side plate, and the electromagnetic unit is electrically connected to the flexible circuit board.

16. The diaphragm according to any one of claims 1 to 3, 5, 6, 10, 12 to 14, characterized in that The polarizing element is a polarizer.

17. A camera device, characterized in that: include: A lens group and an aperture as claimed in any one of claims 1 to 16, wherein the aperture is arranged on at least one side of the lens group.

18. An electronic device, characterized in that: Comprising the camera device as claimed in claim 17.

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