A variable aperture, a camera module, and an electronic device

Abstract

An embodiment of the present application provides a variable aperture, a camera module, and an electronic device, relating to the field of imaging technology, and is used to alleviate the problem of complex variable aperture structure. The variable aperture includes a fixed seat, a rotating bracket, a plurality of blades, and at least one driving component. The driving component includes a magnet component and a coil. The rotating bracket is located inside the fixed seat, and the rotating bracket is rotatably connected to the fixed seat. In the driving component, the magnet component is disposed on a side of the rotating bracket facing away from the blades, and the magnet component is connected to the rotating bracket. The coil is disposed on a side of the magnet component facing the fixed seat. The variable aperture has a simple structure and a small size, which is beneficial to the miniaturized design of the entire camera module and improves the integration of the electronic device.

Description

[0001] This application claims the priority of the Chinese patent application filed with the State Intellectual Property Office on February 26, 2024, with application number 202410211375.6 and application name “A variable aperture, camera module and electronic device”, all contents of which are incorporated by reference in this application. Technical Field

[0002] The present application relates to the field of camera technology, and in particular to a variable aperture, a camera module and an electronic device. Background Art

[0003] With the continuous development of electronic equipment integration technology, taking photos and videos has become one of the common functions of electronic equipment, making the application of cameras in electronic equipment more and more extensive. The above-mentioned camera has a variable aperture, and the variable aperture has an aperture hole with an adjustable aperture. By changing the size of the aperture hole, the amount of external light entering the camera can be adjusted. At present, as the functions of electronic equipment become more and more complex, the integration requirements of electronic equipment are getting higher and higher. However, the structure of the variable aperture is relatively complex, which is not conducive to the miniaturization design of the camera, thereby reducing the integration of electronic equipment. Summary of the invention

[0004] The present application provides a variable aperture, a camera module and an electronic device, which are used to alleviate the problem of complex variable aperture structure.

[0005] In order to achieve the above purpose, this application adopts the following technical solutions:

[0006] In one aspect of the present application, a variable aperture is provided. The variable aperture includes a fixed seat, a rotating bracket, a plurality of blades and at least one driving assembly. The driving assembly includes a magnet assembly and a coil. The fixed seat has a first light-transmitting hole. The fixed seat includes a bottom plate and a side plate, the side plate is arranged on the bottom plate and is arranged around the first light-transmitting hole. A first opening is provided on the side plate, and the first opening penetrates the side plate in a direction perpendicular to the bottom plate. In addition, a rotating bracket is located in the fixed seat, and the rotating bracket is rotatably connected to the fixed seat. The rotating bracket includes an annular portion and a lug, the annular portion is arranged around the first light-transmitting hole, and the lug is arranged on the side wall of the annular portion. The lug is located in the first opening, and the first opening exposes the side of the lug. A plurality of blades are arranged on the rotating bracket, the blades are slidably connected to the annular portion, and are rotatably connected to the fixed seat. A plurality of blades are distributed in an annular shape to surround the aperture hole, and the aperture hole is connected to the first light-transmitting hole. In the driving assembly, the magnet assembly is arranged on the side of the lug away from the blade. The coil is arranged on the side of the magnet assembly facing the fixed seat.

[0007] In summary, the rotating bracket is located in the fixed seat and is rotatably connected to the fixed seat. In addition, the blade is slidably connected to the annular portion and is rotatably connected to the fixed seat. In this case, when the rotating bracket rotates relative to the fixed seat, the blade can be driven to slide relative to the rotating bracket while the blade can be rotated relative to the fixed seat. Based on this, the aperture size of the aperture hole surrounded by a plurality of annularly distributed blades can be changed with the rotation of the rotating bracket, which serves the purpose of adjusting the aperture size of the aperture hole. On this basis, in order to drive the rotating bracket to rotate, it can be known from the above that the above-mentioned driving component includes a magnet component and a coil. The magnet component is arranged on the side of the lug away from the blade. The coil is arranged on the side of the magnet component facing the fixed seat. In this case, by energizing the coil, a magnetic field is generated between the coil and the magnet component. Under the action of the magnetic field, the magnet component arranged on the mover (i.e., the rotating bracket) can be driven to move relative to the coil, and the rotating bracket and the fixed seat are rotatably connected, so that the rotating bracket can be driven to rotate relative to the fixed seat by the magnet component.

[0008] Thus, in the variable aperture provided by the embodiment of the present application, since the magnet assembly is arranged on the rotating bracket as the mover, the variable aperture can be a moving magnet variable aperture. Based on this, the coil that needs to be powered does not need to be arranged on the above-mentioned mover (i.e., a moving coil variable aperture), thereby simplifying the electrical connection structure of the variable aperture. In addition, the present application only rotates the rotating bracket as the mover and the fixed seat as the stator, that is, the rotating bracket can drive the movement of multiple blades to achieve the adjustment of the aperture aperture, thereby reducing the number of components used to adjust the aperture of the variable aperture and achieving the purpose of simplifying the variable aperture structure. On this basis, the rotating bracket is arranged in the fixed seat, which can reduce the thickness of the variable aperture. In addition, the magnet assembly is arranged on the side of the lug away from the blade, and the coil is arranged on the side of the magnet assembly facing the fixed seat. Compared with the scheme of arranging the magnet and the coil around the rotating bracket, the lateral area (perpendicular to the optical axis of the variable aperture) of the variable aperture can be reduced, thereby achieving the purpose of reducing the size of the variable aperture. Furthermore, the lug is embedded in the first opening on the side panel and connected to the magnet assembly, and the first opening exposes the side of the lug. By providing the first opening, not only can the side panel of the fixed seat be avoided from the lug of the rotating bracket and the magnet assembly connected to the lug, but also the weight of the fixed seat can be reduced. In this case, by simplifying the structure of the variable aperture, reducing the thickness, lateral area and weight of the variable aperture, it is beneficial to the miniaturized design of the entire camera module, thereby improving the integration of the electronic device.

[0009] In addition, when the image sensor in the camera module with the variable aperture has a larger target surface, the size of the lens assembly of the camera module along the optical axis is larger. Therefore, for an image sensor with a larger target surface, by adopting the variable aperture provided by the embodiment of the present application, the size of the entire camera module can be effectively reduced.

[0010] In an optional embodiment, the magnet assembly may include a plurality of magnets, and the plurality of magnets may be a Halbach array structure. The surface of the magnet assembly having the Halbach array structure facing the coil has a greater magnetic field strength, so that a very small current can drive a rotating bracket connected to the magnet assembly, thereby achieving the purpose of reducing power consumption.

[0011] In an optional embodiment, the fixing seat includes a boss. The boss is arranged on the bottom plate, and the first light-transmitting hole passes through the boss and the bottom plate. The side plate, the side wall of the boss and the bottom plate are surrounded by a first mounting groove, and at least a part of the rotating bracket is located in the first mounting groove. In this way, the side plate, the side wall of the boss and the bottom plate are surrounded by the first mounting groove, and the rotating bracket can be arranged in the fixing seat, so that the thickness of the rotating bracket and the fixing seat can overlap, thereby achieving the purpose of reducing the thickness of the variable aperture.

[0012] In an optional embodiment, the annular portion is located in the first mounting groove and is arranged around the periphery of the boss, and the first opening is communicated with the first mounting groove, thereby avoiding structural interference with the annular portion and the lug.

[0013] In an optional embodiment, there may be a travel gap between the side wall of the first opening and the lug. Therefore, along the rotation direction of the rotating bracket, a portion of the opening length of the first opening may be the rotation travel of the rotating bracket. When the rotating bracket abuts against the side wall of the first opening, the rotating bracket rotates to the maximum travel.

[0014] In an optional embodiment, the variable aperture also includes an FPC, and the FPC is arranged on the side of the fixed seat away from the blade, and the FPC is connected to the fixed seat. The coil passes through the fixed seat and is arranged on the side of the FPC facing the rotating bracket, and the coil is connected to the FPC. In this way, by arranging the FPC on the side of the fixed seat away from the blade, relative to the solution of arranging the FPC in an arc shape around the periphery of the mover, the FPC can be arranged as a flat plate structure, thereby simplifying the manufacturing process of the FPC. In addition, the coil is arranged through the fixed seat so that the thickness of the coil overlaps with part of the thickness of the fixed seat, which is beneficial to reducing the thickness of the variable aperture. In addition, the coil that needs to be powered is arranged on the side of the FPC facing the rotating bracket, and the coil is connected to the FPC, so that the coil can be arranged opposite to the above-mentioned magnet assembly, and the coil can be powered directly through the metal grounding trace on the FPC, thereby simplifying the electrical connection structure of the variable aperture.

[0015] In an alternative embodiment, the fixed seat includes a first plastic part and a first metal bracket. The first metal bracket is embedded in the first plastic part, and the first metal bracket is connected to the first plastic part to form a first integral structural member. In this way, the above-mentioned first integral structural member can be formed by insert molding. Since the fixed seat has a first metal bracket, the mechanical strength of the fixed seat can be increased. When the fixed seat is impacted during the reliability test (rolling or dropping test, etc.) of the variable aperture and the user's use, the probability of damage to the fixed seat can be reduced, achieving the purpose of extending the service life of the product. In addition, the above-mentioned first metal bracket can also be grounded on the FPC. For example, the first metal bracket can be electrically connected to the copper leakage area on the FPC through a conductive adhesive to achieve the grounding of the first metal bracket, thereby achieving the purpose of reducing electromagnetic interference.

[0016] In an alternative embodiment, the first plastic part has a first hollowed-out area, and the first hollowed-out area exposes a part of the surface of the first metal bracket, and the surface is used to make a product identification code. In this way, the product identification code for characterizing product-related information can be directly prepared on the first metal bracket, without separately setting a magnetic conductive sheet for making the product identification code, thereby achieving the purpose of simplifying the manufacturing process.

[0017] In an alternative embodiment, the coil is disposed on the fixed seat, and the coil is directly connected to the fixed seat. The fixed seat as the stator is in a stationary state relative to the rotating bracket during the process of the aperture change of the aperture hole of the variable aperture. In this way, the coil disposed on the fixed seat can be in a stationary state relative to the magnet assembly disposed on the rotating bracket, so that the above-mentioned variable aperture is a moving magnet type variable aperture.

[0018] In an alternative embodiment, the fixed base includes a first plastic part, a first metal bracket, a metal ground trace, a metal signal trace, a metal ground terminal, and a metal signal terminal. The first metal bracket, the metal ground trace, and the metal signal trace are embedded in the first plastic part, and the metal signal trace, the metal ground trace, the first metal bracket, and the first plastic part are connected to form a first integral structural member. As described above, the above-mentioned first integral structural member can be formed by insert molding. Among them, the technical effects of the first metal bracket are the same as those described above and will not be elaborated here. In addition, since the fixed base includes a metal ground trace, a metal signal trace, a metal ground terminal, and a metal signal terminal, the metal ground trace, the metal signal trace, the metal ground terminal, and the metal signal terminal can replace the above-mentioned FPC. The metal ground terminal is connected to the metal ground trace, so that the first metal bracket can be electrically connected to the main board of the camera module through the metal ground trace and the metal ground terminal to achieve the function of grounding the first metal bracket. In addition, the above variable aperture may further include a rotation control chip for controlling the rotation position of the rotation shaft bracket. The rotation control chip is electrically connected to the metal signal trace. Since the metal signal terminal is connected to the metal signal trace, the rotation control chip is electrically connected to the main board of the camera module through the metal signal terminal and the metal signal trace, so that the processor on the main board can transmit a control signal to the rotation control chip. In addition, the coil directly connected to the fixed base can also be electrically connected to the metal signal trace in the fixed base to supply power to the coil. At this time, the coil can be electrically connected to the entire fixed base through the above metal signal trace, so that there is no need to additionally provide a circuit board for supplying power to the coil.

[0019] In an alternative embodiment, the variable aperture further includes a cover plate disposed on a side of the plurality of blades facing away from the rotating bracket, and the cover plate covers the fixed seat. The cover plate includes a third plastic part, a third metal bracket, and a first gasket. Among them, the third metal bracket is embedded in the third plastic part, and the third metal bracket and the third plastic part are connected to form a third integral structural member. Similarly, the above-mentioned third integral structural member can be formed by insert molding. Since the cover plate has a third metal bracket, the mechanical strength of the cover plate can be increased. When the variable aperture is subjected to reliability tests (such as rolling or dropping tests) and during user use, when the cover plate is impacted, the probability of damage to the cover plate can be reduced, achieving the purpose of extending the service life of the product. In addition, the third metal bracket is connected to the first metal bracket. For example, the third metal bracket in the cover plate can be connected to the first metal bracket in the fixed seat by welding, thereby increasing the reliability of the connection between the cover plate and the fixed seat and reducing the probability of the cover plate falling off. In some embodiments of the present application, a plurality of welding positions can be provided on the above-mentioned cover plate, and the plurality of welding positions can be arranged around the circumference of the aperture hole, so as to improve the stability of the connection between the cover plate and the fixed seat. In addition, the above-mentioned first gasket is stacked on a side of the third integral structural member facing away from the blade. The first gasket can shield a part of the structure of the blade below the cover plate, so that the surface of the first gasket facing away from the above-mentioned third integral structure serves as the appearance surface visible to the user, achieving the effects of decoration and improving the appearance quality, and can maximize the control area of the external product appearance.

[0020] In addition, since the third metal bracket in the cover plate is located inside the third plastic part, and the cover plate is disposed on a side of the plurality of blades facing away from the rotating bracket. In this way, during the rotation of the blade, the component that directly contacts and rubs against the blade is the third plastic part in the cover plate. The surface of the third plastic part can have a relatively small friction coefficient compared to the surface of the metal material, so that the frictional force between the blade and the third plastic part can be reduced, further reducing the probability of blade wear.

[0021] In an alternative embodiment, the third metal bracket is electrically connected to the first metal bracket, and the third metal bracket is grounded through the first metal bracket. As described above, both the cover plate and the fixing base can be prepared by insert molding. In addition, in this case, by electrically connecting the third metal bracket and the first metal bracket, the third metal bracket can be grounded through the first metal bracket. In this way, the manufacturing process of grounding the cover plate can be simplified. In the related art, it is necessary to electrically connect and ground the part led out by the FPC through the cover plate mainly composed of a steel plate by means of dispensing, and then cover the dispensing position with a dispensing protective glue. Compared with the related art, the present application only needs to electrically connect the third metal bracket in the cover plate to the first metal bracket in the fixing base, for example, by welding or dispensing, so that there is no need to additionally provide a part led out by the FPC, as well as structures such as a dispensing layer and a dispensing protective glue for electrically connecting the part led out by the FPC to the cover plate, thereby achieving the purpose of simplifying the structure and reducing the manufacturing process.

[0022] In an alternative embodiment, the cover plate has a second light-transmitting hole, and the second light-transmitting hole communicates with the aperture hole. The third metal bracket has a plurality of hollow portions penetrating through the third metal bracket, and the hollow portions are arranged around the second light-transmitting hole. In this way, the second light-transmitting hole communicating with the aperture hole can be used to allow external light to enter the aperture hole through the second light-transmitting hole. In addition, by providing a plurality of hollow portions on the third metal bracket, the weight of the entire third metal bracket can be reduced, achieving the purpose of reducing the weight of the variable aperture.

[0023] In an alternative embodiment, the variable aperture further includes a second gasket, and the second gasket is stacked on one side of the plurality of blades facing the fixing base. The second gasket is provided with a third light-transmitting hole, and the third light-transmitting hole communicates with the aperture hole. The third light-transmitting hole communicating with the aperture hole can be used to allow external light to enter the aperture hole through the third light-transmitting hole.

[0024] In an alternative embodiment, the second gasket, the first gasket, and the blades are made of the same material. The specular reflectance G, the optical density value OD, the L value, the a value, and the b value in the material color triple of the material are respectively: G≤0.3%; OD value≥5.0; L≤8; |a|≤1; |b|≤1. In this way, the materials of the second gasket, the first gasket, and the blades can all be super black materials, so that during the movement of the blades, the colors and glossiness of the parts of the first gasket, the second gasket, and the blades that the user can see are all the same, reducing the probability of color difference between the above three components and improving the appearance quality.

[0025] In an alternative embodiment, the moduli of the materials of the second gasket, the first gasket, and the blade are greater than or equal to 3000 MPa, the yield strength is greater than or equal to 80 MPa, and the elongation at break is greater than or equal to 10%. In this way, during the reliability test, it is possible to pass 2 or 5 rounds of drop tests and 500 rounds of drum tests. There is a certain risk for more than 1000 rounds of drum tests. In addition, the lifespan can reach 250,000 times.

[0026] In an alternative embodiment, the portion of the fixed seat surrounding the rotating bracket protrudes from the surface of the cover plate facing away from the blade. In this way, the portion of the fixed seat surrounding the rotating bracket, such as the side plate described above, can contact the lens covering the camera module or other decorative components on the rear shell, so that during product testing or user use, the probability of direct contact and deformation between the cover plate and the lens or other device components can be reduced, and the lifespan and reliability of the product can be improved.

[0027] In an alternative embodiment, the drive assembly may further include a first magnetic conductive sheet, which can be disposed on the side of the bottom plate of the fixed seat facing the rotating bracket. The first magnetic conductive sheet is used to adsorb the magnet assembly. The magnetic conductive sheet is also called a magnetic absorption sheet, which has a high magnetic permeability, a low resistivity, and a small iron loss. Based on this, along the thickness direction of the variable aperture, the first magnetic conductive sheet can adsorb the magnet assembly. In addition, the vertical projection of the first opening on the side wall of the boss overlaps with the vertical projection of the first magnetic conductive sheet on the side wall of the boss. As described above, along the rotation direction of the rotating bracket, the opening length of the first opening can be the rotation stroke of the rotating bracket. Therefore, when the vertical projection of the first opening on the side wall of the boss overlaps with the vertical projection of the first magnetic conductive sheet on the side wall of the boss, the first magnetic conductive sheet can be disposed within the stroke range of the rotating bracket. In this way, when the rotating bracket rotates, the first magnetic conductive sheet adsorbs the magnet assembly along the thickness direction of the variable aperture, which can reduce the separation of the rotating bracket from the fixed seat during the rotation of the camera module and improve the reliability of the variable aperture.

[0028] In addition, when adjusting the number, position of the first magnetic conduction sheet and the distance between the first magnetic conduction sheet and the magnet assembly, the adsorption force between the first magnetic conduction sheet and the magnet assembly can be adjusted. In this case, when the adsorption force between all the first magnetic conduction sheets in the variable aperture and the magnet assembly can reach about 10 times the self-weight of the rotating bracket and the magnet assembly, the friction force between the rotating bracket and the fixed seat can be increased. In this case, when the rotating bracket rotates to drive the blades to move to form an aperture hole at an aperture position, such as the maximum aperture position, due to the large friction force between the rotating bracket and the fixed seat, it is difficult for the rotating bracket to rotate further relative to the fixed seat, so that the power supply to the coil can be terminated, making the positions of the rotating bracket and the fixed seat relatively fixed, achieving the purpose of aperture self-locking. In this way, when the user takes a photo or shoots a video in a fixed scenario and does not need to change the aperture, since the aperture is self-locked and the coil is powered off, the purpose of reducing power consumption can be achieved.

[0029] In an alternative embodiment, a second mounting groove is formed in a part of the bottom plate that serves as the bottom of the first mounting groove, and the first magnetic conduction sheet is located in the second mounting groove. The second mounting groove is provided at one end of the coil facing the convex platform. By providing the second mounting groove on the bottom plate, the first magnetic conduction sheet located in the second mounting groove can be embedded in the bottom plate of the fixed seat, so that the thickness of the first magnetic conduction sheet coincides with a part of the thickness of the bottom plate, which is beneficial to reducing the thickness of the variable aperture. In addition, by providing the second mounting groove at one end of the coil facing the convex platform, the first magnetic conduction sheet located in the second mounting groove can be located at one end of the coil facing the convex platform, closer to the magnetic attraction assembly.

[0030] In an alternative embodiment, the driving assembly includes two first magnetic conduction sheets, and one end of the coil facing the convex platform is located between the two first magnetic conduction sheets. In this way, by increasing the number of the first magnetic conduction sheets, the adsorption force between all the first magnetic conduction sheets and the magnetic attraction assembly can be increased, which is beneficial to achieving the purpose of aperture self-locking after the coil is powered off as described above.

[0031] In an alternative embodiment, the side wall of the convex platform includes a connected first semi-circular side wall and a second semi-circular side wall. In addition, the variable aperture further includes a second magnetic conduction sheet and a first rolling member. Among them, the second magnetic conduction sheet is provided on the first semi-circular side wall, and the second magnetic conduction sheet is used for adsorbing with the magnet assembly. The vertical projection of the first opening on the first semi-circular side wall overlaps with the vertical projection of the first magnetic conduction sheet on the first semi-circular side wall. The first rolling member is provided between the rotating bracket and the bottom plate, and the first rolling member is located on the side where the second semi-circular side wall is located. The rotating bracket and the fixed seat are in contact with the first rolling member, and the rotating bracket is rotatably connected to the fixed seat through the first rolling member.

[0032] In this way, since the second magnetic conductive sheet is arranged on the side wall of the first half ring, when the second magnetic conductive sheet is adsorbed by the magnet assembly, the rotating bracket will move towards the position where the second half ring side wall of the fixed seat is located. Since the first rolling member is located on the side where the second half ring side wall is located, the rotating bracket and the fixed seat can be in contact with the first rolling member, that is, the first rolling member is in a zero-fit state with both the rotating bracket and the fixed seat. In this case, when the rotating bracket is rotatably connected to the fixed seat through the first rolling member, since the rotating bracket and the fixed seat can be in contact with the first rolling member, the rotating bracket can always lean on the first rolling member during the rotation process and rotate relative to the fixed seat, thereby improving the stability of the rotating bracket during the rotation process and the consistency when the rotating bracket rotates to various angles, achieving the improvement of the reliability of the product.

[0033] In an alternative embodiment, the first rolling member may include a ball or a roller. Or the first rolling member may further include a plurality of balls or a plurality of rollers. Taking the first rolling member including a plurality of balls as an example, the above-mentioned plurality of balls may be arranged along the thickness direction of the variable aperture.

[0034] In an alternative embodiment, the variable aperture further includes a second rolling member. The second rolling member may be arranged between the rotating bracket and the bottom plate, and the second rolling member is located on the side where the first half ring side wall is located. There is an adjustment gap H1 between the second rolling member and the rotating bracket, and 30μm ≤ H1 ≤ 70μm. As can be seen from the above, when the second magnetic conductive sheet is adsorbed by the magnet assembly, the rotating bracket will move towards the position where the second half ring side wall of the fixed seat is located. In this case, the second rolling member located on the side where the first half ring side wall is located can have the above-mentioned adjustment gap H1 with the rotating bracket. In this way, during the reliability test (such as rolling or dropping test, etc.) of the variable aperture and the process of user use, when the rotating bracket has a large displacement in the horizontal plane (perpendicular to the optical axis of the variable aperture), the side of the rotating bracket close to the second rolling member can be in contact with the second rolling member, so that the second rolling member limits the further displacement of the rotating bracket, reducing the displacement amount of the rotating bracket, thereby avoiding the phenomenon that the blades slidably connected to the rotating bracket are pulled when the rotating bracket has a large displacement, resulting in blade damage.

[0035] In an alternative embodiment, the second rolling member may include a ball or a roller. Or the second rolling member may further include a plurality of balls or a plurality of rollers. Taking the second rolling member including a plurality of balls as an example, the above-mentioned plurality of balls may be arranged along the thickness direction of the variable aperture.

[0036] In an alternative embodiment, the variable aperture includes two driving components, two first rolling members, and two second rolling members. Among them, the two driving components are a first driving component and a second driving component respectively. The first driving component is disposed on one side where the first half-ring sidewall is located, and the second driving component is disposed on one side where the second half-ring sidewall is located. The first driving component is located between the two second rolling members. The second driving component is located between the two first rolling members. In this way, by disposing the first driving component on one side where the first half-ring sidewall of the boss is located and the second driving component on one side where the second half-ring sidewall is located, the force on the rotating bracket can be made uniform during rotation. In addition, by disposing the second driving component between the two first rolling members and increasing the number of first rolling members, the rotating bracket can be in contact with the first rolling members on both sides of the first driving component, which is beneficial to further improving the consistency, stability, and reliability of the movement. In addition, by disposing the first driving component between the two second rolling members and increasing the number of second rolling members, during the reliability test (such as rolling or drop test) of the variable aperture and the user's use process, the displacement of the rotating bracket can be further limited, effectively reducing the displacement amount of the rotating bracket.

[0037] In an alternative embodiment, the rotating bracket includes a second plastic part and a second metal bracket. The second metal bracket is embedded in the second plastic part, and the second metal bracket and the second plastic part are connected to form a second integral structural part. In this way, the above-mentioned second integral structural part can be formed by the insert injection molding process. Since the rotating bracket has a second metal bracket, the mechanical strength of the rotating bracket can be increased. When the variable aperture is subjected to a reliability test (such as rolling or drop test) and during the user's use process, when the rotating bracket is impacted, the probability of damage to the rotating bracket can be reduced, achieving the purpose of extending the service life of the product. In addition, the magnet assembly is connected to and adsorbed by the second metal bracket. In this way, for example, glue can be applied to the side of the second metal bracket facing the magnet assembly to connect the magnet assembly to the second metal bracket. On this basis, since the second metal bracket can be adsorbed by the magnet assembly, the reliability of the connection between the magnet assembly and the second metal bracket is increased. In addition, the separate magnetic conductive sheet for connecting the rotating bracket and the magnet assembly can be avoided, achieving the purpose of simplifying the manufacturing process.

[0038] In an alternative embodiment, in the same driving component, the vertical projection of the magnet assembly on the rotating bracket overlaps with the vertical projection of the coil on the rotating bracket, so that in the same driving component, the positions of the magnet assembly and the coil correspond to each other, facilitating the coil after being energized to more easily generate a magnetic field with the magnet assembly.

[0039] In an alternative embodiment, the fixed seat further includes an adhesive structure disposed on the surface of the bottom plate facing away from the side plate. Both the adhesive structure and the surface of the bottom plate facing away from the side plate can be connected to the lens assembly located below the variable aperture. In this way, the connection surface between the variable aperture and the lens assembly can be an uneven surface, so as to improve the bonding stability.

[0040] In an alternative embodiment, the vertical projection of the adhesive structure on the bottom plate is a sector, and the sector has a first arc side and a second arc side, and the arc length of the first arc side is greater than the arc length of the second arc side. Among them, the first arc side is disposed away from the boss relative to the second arc side. In this way, the adhesive structure can be a dovetail structure, and the adhesive groove of the lens assembly cooperating with the adhesive structure can be a dovetail groove matching the above dovetail structure. In this case, when the camera module is working, the variable aperture can prevent shear in the horizontal plane (the surface perpendicular to the optical axis of the variable aperture) in both the X and Y directions. In addition, along the rotation direction of the blades in the variable aperture, the contact area between the side wall of the dovetail structure and the dovetail groove is relatively large, which can effectively limit the variable aperture to achieve the limitation of the position of the variable aperture.

[0041] On the other hand, the present application provides a camera module, including a lens assembly and any one of the variable apertures as described above, and the variable aperture is disposed on the light incident side of the lens assembly. The above camera module has the same technical effects as the variable aperture provided in the foregoing embodiments, and will not be elaborated herein.

[0042] On the other hand, the present application provides an electronic device, which includes a rear case and the camera module as described above, and the camera module is disposed on the rear case. The electronic device has the same technical effects as the variable aperture in the camera module provided in the foregoing embodiments, and will not be elaborated herein. Description of the Drawings

[0043] Figure 1 It is a schematic structural diagram of an electronic device provided by an embodiment of the present application;

[0044] Figure 2 is Figure 1 a schematic structural diagram of a camera module in

[0045] Figure 3 is Figure 2 an exploded structural diagram of a camera module in

[0046] Figure 4 is Figure 3 a schematic structural diagram of a variable aperture in

[0047] Figure 5 is Figure 4A schematic diagram of an exploded structure of a variable aperture;

[0048] Figure 6A A schematic diagram of a partial structure of a variable aperture provided in an embodiment of the present application;

[0049] Figure 6B for Figure 6A A schematic diagram of a structure in which a rotating bracket is installed on a fixed seat;

[0050] Figure 7 A schematic diagram of another partial structure of a variable aperture provided in an embodiment of the present application;

[0051] Figure 8 for Figure 7 A schematic diagram of a structure in which the blades are mounted on a fixed seat and a rotating bracket;

[0052] Figure 9 For along Figure 8 A cross-sectional view obtained by cutting along the dotted line O3-O4 in FIG.

[0053] Figure 10 A schematic diagram of the structure of a magnet assembly provided in an embodiment of the present application;

[0054] Figure 11 Another structural schematic diagram of a magnet assembly provided in an embodiment of the present application;

[0055] Figure 12 For along Figure 6A A top view obtained in the Z direction;

[0056] Figure 13 For along Figure 6A Another top view obtained in the Z direction;

[0057] Figure 14 A schematic diagram of another partial structure of a variable aperture provided in an embodiment of the present application;

[0058] Figure 15 A schematic diagram of another partial structure of a variable aperture provided in an embodiment of the present application;

[0059] Figure 16 For along Figure 6A Another top view obtained in the Z direction;

[0060] Figure 17 For along Figure 16 A cross-sectional view obtained by cutting along the dotted line O1-O2 in FIG.

[0061] Figure 18 A schematic diagram of another partial structure of a variable aperture provided in an embodiment of the present application;

[0062] Figure 19 Another cross-sectional view obtained by cutting along the dashed line O1 - O2 in Figure 16 ;

[0063] Figure 20 Another top view obtained by looking along the Z - direction in Figure 6A ;

[0064] Figure 21 Another exploded structural schematic diagram of the variable aperture in Figure 4 ;

[0065] Figure 22 Another bottom view obtained by looking along the Z - direction in Figure 21 ;

[0066] Figure 23 Another top view obtained by looking along the Z - direction in Figure 21 ;

[0067] Figure 24 Schematic diagram of another partial structure of the variable aperture provided by the embodiment of the present application;

[0068] Figure 25 Exploded structural schematic diagram of a fixed seat provided by the embodiment of the present application;

[0069] Figure 26 Structural schematic diagram of a fixed seat provided by the embodiment of the present application;

[0070] Figure 27 Another structural schematic diagram of a fixed seat provided by the embodiment of the present application;

[0071] Figure 28 Schematic diagram of a partial structure of a fixed seat provided by the embodiment of the present application;

[0072] Figure 29 Schematic diagram of another partial structure of the variable aperture provided by the embodiment of the present application;

[0073] Figure 30 Another exploded structural schematic diagram of a fixed seat provided by the embodiment of the present application;

[0074] Figure 31 Another structural schematic diagram of a fixed seat provided by the embodiment of the present application;

[0075] Figure 32 Another schematic diagram of a partial structure of a fixed seat provided by the embodiment of the present application;

[0076] Figure 33 Another structural schematic diagram of the variable aperture in Figure 3 ;

[0077] Figure 34 Exploded structural schematic diagram of a rotating bracket provided by an embodiment of the present application;

[0078] Figure 35 Structural schematic diagram of a rotating bracket provided by an embodiment of the present application;

[0079] Figure 36 Along Figure 35 An upward view obtained in the Z direction in;

[0080] Figure 37 Another exploded structural schematic diagram of a variable aperture provided by an embodiment of the present application;

[0081] Figure 38 Exploded structural schematic diagram of a cover plate provided by an embodiment of the present application;

[0082] Figure 39 For Figure 38 Partial structural schematic diagram of the cover plate in;

[0083] Figure 40 Schematic diagram of another partial structure of a variable aperture provided by an embodiment of the present application;

[0084] Figure 41 Structural schematic diagram of a variable aperture provided by the related art;

[0085] Figure 42 For Figure 3 Another structural schematic diagram of the variable aperture in;

[0086] Figure 43 For Figure 3 Another structural schematic diagram of the variable aperture in;

[0087] Figure 44 Connection schematic diagram of the variable aperture and the lens assembly provided by an embodiment of the present application.

[0088] Reference numerals:

[0089] 01 - Electronic device; 02 - Display screen; 04 - Middle frame; 03 - Rear case; 06 - Opening; 05 - Processor; 10 - Camera module; 07 - Lens cover; 08 - Camera hole; 20 - Variable aperture; 40 - Lens assembly; 41 - Motor; 801 - Filter; 802 - Image sensor; 80 - Circuit board; 21 - Fixed seat; 22 - Rotating bracket; 23 - Blade; 24 - Driving component; 241 - Magnet component; 242 - Coil; 25 - Cover plate; 26 - Second gasket; 100 - Aperture hole; 101 - First light-transmitting hole; 103 - Third light-transmitting hole; 28 - Rotation control chip; 121 - First limiting post; 122 - Second limiting post; 211 - Bottom plate; 212 - Boss; 213 - Side plate; 130 - First opening; 110 - First mounting groove; 221 - Ring part; 222 - Lug; 123 - Coil mounting hole; 1210 - Rotating connection hole; 1220 - Sliding guide groove; 2410 - Magnet; 27 - FPC; 2101 - First plastic part; 2102 - First metal bracket; 214 - First metal part; 215 - Second metal part; 2151 - Metal plate; 2152 - Metal rod; 2153 - Welding part; 2100 - First integral structure; 140 - First hollow area; 124 - Coil mounting groove; 2103 - Metal grounding trace; 2104 - Metal signal trace; 2105 - Metal grounding terminal; 2106 - Metal signal terminal; 243 - First magnetic conduction sheet; 111 - Second mounting groove; 2121 - First semi-circular side wall; 2122 - Second semi-circular side wall; 29 - Second magnetic conduction sheet; 31 - First rolling part; 310 - First rolling groove; 32 - Second rolling part; 320 - Second rolling groove; 2401 - First driving component; 2402 - Second driving component; 2201 - Second plastic part; 2202 - Second metal bracket; 2200 - Second integral structure; 2501 - Third plastic part; 2502 - Third metal bracket; 2503 - First gasket; 102 - Second light-transmitting hole; 2500 - Third integral structure; 25011 - Hollow part; 34 - Anti-collision structure; 35 - Bonding structure; 351 - First arc edge; 352 - Second arc edge; 36 - Bonding groove. Detailed implementation manners

[0090] Next, the technical solutions in the embodiments of the present application will be described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments.

[0091] Hereinafter, terms such as "first", "second", etc. are only used for convenience of description and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0092] In addition, in the embodiments of the present application, orientation terms such as "upper", "lower", "lateral", "longitudinal", "horizontal", and "vertical" may include but are not limited to being defined relative to the orientation of the components shown in the drawings. It should be understood that these directional terms may be relative concepts, which are used for relative description and clarification and may change correspondingly according to the change of the orientation of the components shown in the drawings.

[0093] In the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" may be a fixed mechanical connection, a detachable mechanical connection, or integrated; or, "connection" may be a direct connection or an indirect connection through an intermediate medium.

[0094] In addition, unless otherwise clearly specified and limited, the term "electrical connection" should be understood in a broad sense. For example, "electrical connection" may be a direct electrical connection. For example, physical contact and electrical conduction occur between two components. It can also be understood that in a circuit structure, electrical connection is achieved between different components through physical lines such as copper foils or wires of a printed circuit board (PCB) that can transmit electrical signals for electrical signal transmission; or, "electrical connection" may be an indirect electrical connection between two components through an intermediate medium; or, "electrical connection" may be an electrical connection between two components in an air-spaced / non-contact manner. For example, electrical connection is achieved between two components by means of capacitive coupling for electrical signal transmission.

[0095] In the embodiments of the present application, the descriptions of "perpendicular" and "parallel" respectively indicate approximate perpendicularity and approximate parallelism within a certain error range. The error range may be a range where the deviation angles relative to absolute perpendicularity and absolute parallelism are less than or equal to 5°, 8°, or 10° respectively, and no specific limitation is made here.

[0096] In the embodiments of the present application, orientation terms such as "upper", "lower", "left", "right", etc. may include but are not limited to being defined relative to the orientation of the components shown in the drawings. It should be understood that these directional terms may be relative concepts, which are used for relative description and clarification and may change correspondingly according to the change of the orientation of the components shown in the drawings.

[0097] In the drawings of the embodiments of the present application, components are represented by guiding lines with arrows; parts are only represented by guiding lines; hollow structures such as openings and holes are represented by guiding lines with wavy lines at the ends.

[0098] Embodiments of the present application provide an electronic device, which may have a display function. The electronic device may be applied to various communication systems or communication protocols, such as: Bluetooth (BT) communication technology, Global Positioning System (GPS) communication technology, Global System of Mobile Communication (GSM) communication technology, Wireless Fidelity (WiFi) communication technology, Wideband Code Division Multiple Access Wireless (WCDMA) communication technology, Long Term Evolution (LTE), 5G communication technology, and other future communication technologies. The electronic device in the embodiments of the present application may be a mobile phone, a tablet computer (pad), a notebook computer, a smart home, a smart wearable device (such as a smart watch, a smart bracelet, smart glasses, a smart helmet), a Virtual Reality (VR) electronic device, an Augmented Reality (AR) electronic device, etc. The electronic device may also be a handheld device with wireless communication function, a computing device, or other processing devices connected to a wireless modem, a vehicle-mounted device, an electronic device in a 5G network, or an electronic device in a future evolved Public Land Mobile Network (PLMN). The embodiments of the present application are not limited thereto.

[0099] In some embodiments, in order to enable the above-mentioned electronic device to achieve a display function, as Figure 1 shown, the electronic device 01 provided by the embodiments of the present application may include a display screen 02, a rear case 03 located on the back of the display screen 02 (opposite to the display surface of the display screen 02), and a middle frame 04 located between the display screen 02 and the rear case 03. The middle frame 04 can support the display screen 02.

[0100] The display screen 02 can be a liquid crystal display (LCD), or an organic light emitting diode (OLED) display screen, or a micro (or mini) light-emitting diode display screen, or a quantum dot light-emitting diode (QLED) display screen, etc. The present application does not limit the type of the above display screens.

[0101] The above electronic device 01 may further include a processor 05 electrically connected to the display screen 02. The processor 05 may be disposed on a side of the middle frame 04 away from the display screen 02. The rear case 03 is fastened to the middle frame 04, so that an installation space is formed between the rear case 03 and the middle frame 04 for accommodating the above-mentioned processor 05, battery and other components. The processor 05 can provide display data to the display screen 02 to drive the display screen 02 to display images.

[0102] Exemplarily, the above processor 05 may include one or more processing units. For example, the processor may include an application processor (AP), a modulation and demodulation processor, a graphics processing unit (GPU), an image signal processor (ISP), a controller, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural-network processing unit (NPU), etc. Among them, different processing units may be independent devices or integrated in one or more processors.

[0103] In addition, the above electronic device 01 may further include a gyro sensor, a hall sensor, an external memory interface, an internal memory, a universal serial bus (USB) interface, a charging management module, a power management module, a battery, an antenna, a mobile communication module, a wireless communication module, an audio module, a speaker, a receiver, a microphone, a headphone interface, a sensor module, keys, and a camera, etc., which are electrically connected to the processor 05. The sensor module may include a pressure sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a distance sensor, a proximity light sensor, a fingerprint sensor, a temperature sensor, a touch sensor, an ambient light sensor, and a bone conduction sensor, etc.

[0104] In some embodiments, in order for the above-mentioned electronic device 01 to implement a shooting function, the electronic device 01 provided in the embodiments of the present application may further include a camera module 10, which may be a front camera module or a rear camera module. The front camera module may be disposed on Figure 1 the back of the display screen 02 as shown, and the photosensitive surface of the front camera module is located on the display surface side of the display screen 02. The rear camera module may be disposed on the side of the middle frame 04 away from the display screen 02, that is, within the installation space formed between the middle frame 04 and the rear shell 03, and the photosensitive surface of the rear camera module is located on the back of the electronic device 01.

[0105] Exemplarily, the front camera module or the rear camera module may include a plurality of camera modules 10 as Figure 1 shown. Taking the rear camera module as an example, an opening 06 for exposing a part of the camera module 10 is formed on the rear shell 03. In addition, the electronic device 01 further includes a lens cover 07, which is buckled on the camera module 10 to protect the camera module 10. The lens cover 07 has a camera hole 08 for exposing the lens of the camera module 10.

[0106] Among them, the above-mentioned camera module 10 may be one or more of a standard camera module, a telephoto camera module, a wide-angle camera module, an ultra-telephoto camera module, and an ultra-wide-angle camera module. The present application does not limit the number of the camera modules 10, Figure 1 and an example is given with the rear camera module including 3 camera modules 10.

[0107] The following gives an example of the structure of the camera module 10. In some embodiments of the present application, as Figure 2 shown, the camera module 10 may include a lens assembly 40, a motor 41, and a variable aperture 20. For ease of description, an XYZ coordinate axis is established in the drawings. Among them, the Z direction may be the optical axis O1-O2 direction of the lens assembly 40, that is, the thickness direction of the camera module 10 and each component in the camera module 10. The XY plane formed by the X direction and the Y direction may be perpendicular to the optical axis O1-O2 direction of the lens assembly 40.

[0108] It should be noted that the optical axis O1-O2 direction may refer to the direction in which the optical system of the lens assembly 40 conducts light. Exemplarily, for a symmetric lens assembly 40, the optical axis O1-O2 may coincide with the rotation center line of the optical system of the lens assembly 40. Among them, the optical axis O1-O2 of the above-mentioned lens assembly 40 may be used as the optical axis of the camera module 10, and the optical axis of the above-mentioned variable aperture 20 may overlap with the optical axis of the camera module 10.

[0109] Based on this, the above lens assembly 40 may include one or more optical lenses. The above optical lenses may be convex lenses or concave lenses, so that the lens assembly 40 with the above optical lenses can utilize the refraction principle of the optical lenses to converge the light of the object to be photographed onto the focal plane of the camera module 10 for imaging. The above variable aperture 20 is arranged on the light incident side of the lens assembly 40. The variable aperture 20 has an aperture hole 100 with adjustable aperture. By changing the aperture size of the aperture hole 100, the amount of external light entering the camera module 10 can be adjusted. For example, when the diameter of the aperture hole 100 is the largest, the most external light enters the camera module 10. When the diameter of the aperture hole 100 is the smallest, the least external light enters the camera module 10.

[0110] As Figure 3 shown, for example, the motor 41 can drive the lens assembly 40 to move in the Z direction to achieve auto focus (AF). Or, for another example, the motor 41 can also drive the lens assembly 40 to move in the XY plane or rotate around the optical axis O-O of the lens assembly 40 to achieve optical image stabilization. Or, when the above camera module 10 is a fixed-focus camera, the motor 41 may not need to be provided in the camera module 10.

[0111] On this basis, in order to enable the camera module 10 to perform photoelectric conversion on the light incident into the camera module 10 to generate image information, continue as Figure 3 shown, the camera module 10 may further include a filter 801, an image sensor 802, and a circuit board 80. Among them, the image sensor 802 is arranged on the circuit board 80, and the image sensor 802 is electrically connected to the circuit board 80.

[0112] For example, the image sensor 802 may be a charge coupled device (CCD), or may also be a complementary metal-oxide semiconductor device (CMOS). The image sensor 802 is arranged at the focal plane position of the camera module 10, so as to be able to receive the light image of the object to be photographed converged by the lens assembly 40. The image sensor 802 may include a plurality of photosensitive units (not shown in the figure), and each photosensitive unit converts the received light amount into an electrical signal corresponding to the light amount in a proportional relationship.

[0113] In addition, to improve the effective resolution and color reducibility of the image sensor 802, the filter 801 can be disposed on the light incident side of the image sensor 802. By way of example, the above-mentioned filter 801 can be an infrared filter 801, which can filter out the infrared light in the ambient light and transmit visible light. Or, as another example, the filter 801 can be a dual-bandpass filter 801, which can select the bands within two regions of the ambient light to pass through, such as visible light and infrared light, or visible light and ultraviolet light, or ultraviolet light and infrared light, etc.

[0114] As can be seen from the above, Figure 3 the variable aperture 20 shown can adjust the amount of incident light of external light entering the camera module 10. The structure of the variable aperture 20 will be described by way of example below. In some embodiments of the present application, as Figure 4 shown, the variable aperture 20 includes a fixed base 21 (base) 21, a rotating bracket (carrier) 22, a plurality of blades 23, at least one driving component 24, and a cover plate (cover) 25. By way of example, the above-mentioned driving component 24 can include a magnet component 241 and a coil 242. The above-mentioned cover plate 25 is covered on the fixed base 21, and a receiving space can be formed between the cover plate 25 and the fixed base 21. The above-mentioned rotating bracket 22, blades 23, and at least one driving component 24 are located in the receiving space.

[0115] Based on this, as Figure 5 (as shown in the exploded view of the variable aperture 20 in Figure 4 ), the rotating bracket 22 can be located within the fixed base 21, and the rotating bracket 22 is rotatably connected to the fixed base 21. In this case, the rotating bracket 22 can serve as the mover in the variable aperture 20, and the rotating bracket 22 can rotate relative to the fixed base 21 about the optical axis O1 - O2. The fixed base 21 can serve as the stator in the variable aperture 20 and is in a stationary state relative to the rotating bracket 22.

[0116] By way of example, in order to dispose the rotating bracket 22 within the fixed base 21, as Figure 6A shown, the fixed base 21 can include a bottom plate 211, a boss 212, and a side plate 213. Among them, the boss 212 can be disposed on the bottom plate 211, and the fixed base 21 has a first light-transmitting hole 101, which can penetrate through the boss 212 and the bottom plate 211. In addition, the side plate 213 is disposed on the bottom plate 211, and the side plate 213 can be disposed around the periphery of the boss 212. The above-mentioned bottom plate 211, boss 212, and side plate 213 can be formed by a single manufacturing process, such as an injection molding process. In this case, the bottom plate 211, boss 212, and side plate 213 are connected as an integral structure.

[0117] Based on this, the side plate 213, the side wall of the boss 212, and the bottom plate 211 can enclose a first installation groove 110. At least a part of the rotating bracket 22 can be located within the first installation groove 110, and the rotating bracket 22 located within the first installation groove 110 can be arranged around the periphery of the first light-transmitting hole 101.

[0118] In this way, by providing the first installation groove 110 on the fixed seat 21, the rotating bracket 22 located within the first installation groove 110 can be accommodated within the fixed seat 21, so that the thicknesses (in the Z direction) of the rotating bracket 22 and the fixed seat 21 can overlap, achieving the purpose of reducing the thickness of the variable aperture 20.

[0119] On this basis, continue as Figure 6A shown, the rotating bracket 22 can include an annular portion 221 and a lug 222. The lug 222 is provided on the side wall of the annular portion 221, and the lug 222 can be connected to the annular portion 221. For example, the lug 222 and the annular portion 221 are connected as an integral structural member through an injection molding process. In addition, the magnet assembly 241 can be provided on the lug 222, and the magnet assembly 241 is connected to the lug 222, so that the magnet assembly 241 can be carried by the lug 222. And, a first opening 130 is formed on the side plate 213 of the fixed seat 21. The first opening 130 penetrates the side plate 213 in a direction perpendicular to the bottom plate 211, and the first opening 130 communicates with the first installation groove 110.

[0120] In this case, as Figure 6B shown, the annular portion 221 of the rotating bracket 22 is located within the first installation groove 110 (as Figure 6A shown), and the annular portion 221 can be arranged around the periphery of the boss 212 of the fixed seat 21. In addition, the lug 222 of the rotating bracket 22 and the magnet assembly 241 connected to the lug 222 can be located within the first opening 130 (as Figure 6A shown), and the first opening 130 can also expose the side surface of the lug 222. In this way, by providing the first opening 130 on the side plate 213 of the fixed seat 21, not only can the position of the side plate 213 of the fixed seat 21 be avoided from the lug 222 of the rotating bracket 22 and the magnet assembly 241 connected to the lug 222, but also the weight of the fixed seat can be reduced.

[0121] Based on this, there can be a continuation as Figure 6A shown between the side wall of the first opening 130 (as Figure 6BThe stroke clearance L shown in the figure. Therefore, along the rotation direction of the rotating bracket 22, a part of the opening length of the first opening 130 can be the rotation stroke of the rotating bracket 22. When the rotating bracket 22 abuts against the side wall of the first opening 130, the rotating bracket 22 rotates to the maximum stroke.

[0122] In addition, continuing as Figure 5 shown in the figure, the cover plate 25 is arranged on the side of the plurality of blades 23 away from the rotating bracket 22. The plurality of blades 23 are arranged on the rotating bracket 22. The blades 23 can be slidably connected to the rotating bracket 22, and the blades 23 can also be rotatably connected to the fixed seat 21. The plurality of blades 23 are annularly distributed to enclose the aperture 100.

[0123] Exemplarily, the variable aperture 20 may further include a first limiting post 121 arranged on the fixed seat 21 as Figure 7 shown in the figure, and a second limiting post 122 arranged on the rotating bracket 22. When the rotating bracket 22 includes Figure 6A the annular part 221 and the lug 222 shown in the figure, the second limiting post 122 can be arranged on the annular part 221.

[0124] In addition, continuing as Figure 7 shown in the figure, the blade 23 is provided with a rotation connection hole 1210 and a sliding guide groove 1220 penetrating through the blade 23. As Figure 8 shown in the figure, one blade 23 is connected with one first limiting post 121 and one second limiting post 122. Specifically, as Figure 9 (the cross-sectional view obtained by cutting along the dotted line O3 - O4 in Figure 8 ) shown in the figure. By arranging the first limiting post 121 on the fixed seat 21 in the rotation connection hole 1210 (as Figure 7 shown in the figure) on the blade 23, the blade 23 can be rotatably connected to the fixed seat 21. By arranging the second limiting post 122 on the rotating bracket 22 in the sliding guide groove 1220 on the blade 23, the blade 23 can be slidably connected to the rotating bracket 22.

[0125] In this case, during the process of the rotating bracket 22 rotating relative to the fixed seat 21 along the Figure 8 arc-shaped arrow direction in the figure, the second limiting post 122 on the rotating bracket 22 will move along the sliding guide groove 1220 on the blade, so as to push the blade 23 to rotate along the axis direction of the first limiting post 121. During the movement of the plurality of blades 23, the size of the aperture 100 changes accordingly. The two ends of the sliding guide groove 1220 are respectively the limit positions of the second limiting post 122. When the second limiting post 122 slides to any one of the two limit positions, the aperture of the aperture 100 can change to the maximum aperture or the minimum aperture.

[0126] In addition, continuing as shown in Figure 7 shown, the above-mentioned aperture hole 100 can communicate with the first light-transmitting hole 101, so that the light of the light-transmitting aperture hole 100 can enter the lens assembly 40 as shown in Figure 3 after passing through the first light-transmitting hole 101. Based on this, the minimum aperture of the aperture hole 100 can be matched with the first limit aperture gear of the variable aperture 20, such as the minimum aperture gear. At this time, the light flux entering the lens assembly 40 through the variable aperture 20 can be minimized. On the contrary, in some embodiments of the present application, the maximum aperture of the aperture hole 100 can be matched with the second limit aperture gear of the variable aperture 20, such as the maximum aperture gear. At this time, the light flux entering the lens assembly 40 through the variable aperture 20 can be maximized.

[0127] Alternatively, in some other embodiments of the present application, continuing as shown in Figure 5 shown, the variable aperture 20 may further include a second spacer (soma) 26, and the second spacer 26 is stacked on the side of the plurality of blades 23 facing the fixed seat 21. A third light-transmitting hole 103 is formed in the second spacer 26, and the third light-transmitting hole 103 communicates with the aperture hole 100. The light passing through the aperture hole 100 can first pass through the third light-transmitting hole 103 and then enter the lens assembly 40 through the first light-transmitting hole 101 on the fixed seat 21 (as shown in Figure 3 shown).

[0128] Therefore, the aperture of the third light-transmitting hole 103 can be matched with the second limit aperture gear of the variable aperture 20, such as the maximum aperture gear. At this time, the edge shape of the third light-transmitting hole 103 is closer to an ideal circle compared to the edge shape of the aperture hole 100 with the largest aperture surrounded by the plurality of blades 23. When the aperture hole 100 is in the state of the largest aperture, the above-mentioned blades 23 can be located outside the edge of the third light-transmitting hole 103, so as to avoid blocking the third light-transmitting hole 103.

[0129] In addition, continuing as shown in Figure 5 shown, in order to drive the rotating bracket 22 to rotate relative to the fixed seat 21 along the optical axis O1-O2, as can be seen from the above, the variable aperture 20 may further include a driving component 24. Among them, the magnet component 241 in the driving component 24 can be arranged on the side of the rotating bracket 22 facing away from the blades 23, and the magnet component 241 is connected to the rotating bracket 22. Based on this, in order to enable the coil 242 in the driving component 24 to be relatively arranged with the above-mentioned magnet component 241, the coil 242 can be arranged on the side of the magnet component 241 facing the fixed seat 21.

[0130] In this way, since the magnet assembly 241 is connected to the rotating bracket 22 which serves as a mover, when an electric current is applied to the coil 242, the magnetic field generated by the coil 242 interacts with the magnetic field generated by the magnet assembly 241 to generate a force. This force enables the magnet assembly 241 to rotate relative to the coil 242, and further drives the rotating bracket 22 connected to the magnet assembly 241 to rotate relative to the fixed base 21.

[0131] On this basis, in some embodiments of the present application, in the same drive assembly 24, the vertical projection of the magnet assembly 241 on the rotating bracket 22 overlaps with the vertical projection of the coil 242 on the rotating bracket 22. In this way, the positions of the rotating bracket 22 and the coil 242 in the same drive assembly 24 correspond to each other, so that the magnetic field generated by the energized coil 242 can more easily interact with the magnetic field generated by the magnet assembly 241.

[0132] In some embodiments of the present application, as Figure 10 shown, the above-mentioned magnet assembly 241 may include a plurality of magnets 2410, and the magnetic fields generated by the plurality of magnets 2410 can all interact with the magnetic field generated by the energized coil 242 (as Figure 5 shown), thereby increasing the intensity of the magnetic field generated by the above-mentioned magnet assembly 241. By way of example, the directions of the N poles pointing to the S poles of the plurality of magnets 241 in the above-mentioned magnet assembly 241 may all be arranged along the Z direction. Among them, Figure 10 the N poles and S poles of the magnets 241 are not shown, and the upper and lower surfaces of the magnet 2410 along the Z direction may be the N pole and S pole of the magnet 2410 respectively.

[0133] Alternatively, by way of another example, the plurality of magnets in the above-mentioned magnet assembly 241 may be arranged in a Halbach array structure as Figure 11 shown. Among them, in the above-mentioned Halbach array structure, the directions of the N poles pointing to the S poles of some magnets 2410a are arranged along the Z direction, and the directions of the N poles pointing to the S poles (the N poles and S poles of the magnet 2410b are not shown in the figure) of some other magnets 2410b are arranged along the horizontal plane (XY plane). The magnets 2410a and the magnets 2410b are alternately arranged. In this way, the surface A of the magnet assembly 241 with the above-mentioned Halbach array structure facing the coil 242 has a relatively large magnetic field intensity. Thus, when a very small current flows through the coil 242, it can push the rotating bracket 22 connected to the magnet assembly 241, achieving the purpose of increasing the driving force on the rotating bracket 22 and reducing power consumption.

[0134] In summary, in the variable aperture 20 provided by the embodiments of the present application, as Figure 7 shown, the rotating bracket 22 is located inside the fixed base 21, and the rotating bracket 22 is rotatably connected to the fixed base 21. In addition,Figure 5 The shown blade 23 is slidably connected to the rotating bracket 22, and the blade 23 is also rotatably connected to the fixed seat 21. In this case, when the rotating bracket 22 rotates relative to the fixed seat 21, the rotating bracket 22 can drive the blade 23 to slide relative to the rotating bracket 22 while causing the blade 23 to rotate relative to the fixed seat 21. Based on this, during the rotation of the rotating bracket 22, the aperture of the aperture hole 100 surrounded by the plurality of annularly distributed blades 23 can be changed as the rotating bracket 22 rotates, so as to adjust the aperture size of the aperture hole 100 and ultimately achieve the purpose of adjusting the aperture position of the variable aperture 20.

[0135] On this basis, in order to drive the rotation of the rotating bracket 22, as can be seen from the above, the driving assembly 24 includes Figure 5 the magnet assembly 241 and the coil 242 as shown. The magnet assembly 241 is arranged on the side of the rotating bracket 22 facing away from the blade 23. The coil 242 is arranged on the side of the magnet assembly 241 facing the fixed seat 21. In this case, by energizing the coil 242, an interaction force is generated between the magnetic field generated by the coil 242 and the magnetic field generated by the magnet assembly 241, and this interaction force can drive the magnet assembly 241 to drive the rotating bracket 22 to rotate relative to the fixed seat 21.

[0136] In this way, in the variable aperture 20 provided by the embodiment of the present application, since the magnet assembly 241 is arranged on the rotating bracket 22 serving as the mover, the variable aperture 20 can be a moving-magnet variable aperture 20. Based on this, the coil 242 that needs to be powered does not need to be arranged on the above-mentioned mover (i.e., a moving-coil variable aperture), thereby simplifying the electrical connection structure of the variable aperture 20. In addition, in the embodiment provided by the present application, only by the rotational cooperation of the rotating bracket 22 serving as the mover and the fixed seat 21 serving as the stator, the rotating bracket 22 can drive the plurality of blades 23 to move to adjust the aperture of the aperture hole 100, reducing the number of components for adjusting the aperture of the variable aperture 20 and achieving the purpose of simplifying the structure of the variable aperture 20.

[0137] On this basis, as Figure 7As shown, by disposing the rotating bracket 22 within the fixed base 21, the thickness (dimension along the Z direction) of the variable aperture 20 can be reduced. Additionally, by disposing the magnet assembly 241 on the side of the rotating bracket 22 facing away from the blade 23 and the coil 242 on the side of the magnet assembly 241 facing the fixed base 21, as compared with the solution of disposing the magnet and the coil on the periphery of the rotating bracket, the area of the variable aperture 20 within the XY plane (i.e., laterally) can be reduced, thereby achieving the purpose of reducing the size of the variable aperture 20. In this case, by simplifying the structure of the variable aperture 20, reducing the thickness and lateral area of the variable aperture 20, it is beneficial to the miniaturized design of the entire camera module 10 and improves the integration of the electronic device.

[0138] In addition, when the image sensor 802 (as Figure 3 shown) in the above camera module 10 has a relatively large target surface (i.e., the size of the image sensor), the dimension of the lens assembly 40 of the camera module 10 along the Z direction is relatively large so that the size of the lens assembly 40 matches the target surface of the sensor 802. Based on this, when the image sensor 802 with a relatively large target surface is adopted in the camera module 10, although it is difficult to further reduce the dimension of the lens assembly 40 along the Z direction, by adopting the variable aperture 20 provided by the embodiments of the present application, since the dimension of the variable aperture 20 along the Z direction is small, the size of the entire camera module 10 can be effectively reduced.

[0139] On this basis, the above driving assembly 24 may further include a first magnetic conductive sheet 243 as Figure 12 (top view obtained along the Figure 6A Z direction in Figure 6A shown), and the first magnetic conductive sheet 243 may be disposed on the side of the bottom plate 211 of the fixed base 21 facing the rotating bracket 22 (as Figure 6A shown), and the first magnetic conductive sheet 243 is used to adsorb to the magnet assembly 241 on the rotating bracket 22 as Figure 6A shown. Among them, the magnetic conductive sheet can also be called a magnetic adsorption sheet, and the above magnetic conductive sheet has a relatively high magnetic permeability, low resistivity, and small iron loss. Based on this, along the thickness direction of the variable aperture 20 ( Z direction in

[0140] shown), the first magnetic conductive sheet 243 can adsorb the magnet assembly 241. Since the first magnetic conductive sheet 243 adsorbs the magnet assembly 241 along the Z direction, the above first magnetic conductive sheet 243 can also be called a Z-direction magnetic conductive sheet.

[0140] Exemplarily, the above first magnetic conductive sheet 243 may include substances capable of attracting ferromagnetic substances, such as metals like iron, nickel, and cobalt. For example, the above first magnetic conductive sheet 243 may be a stainless steel sheet, simply referred to as a steel sheet. The setting manner of the metal materials capable of being adsorbed by magnetic substances in the following embodiments of the present application is the same as that described above, and will not be elaborated here.

[0141] In addition, continuing as Figure 12 shown, the vertical projection of the first opening 130 on the side wall of the boss 212 overlaps with the vertical projection of the first magnetic conductive sheet 243 on the side wall of the boss 212. As can be seen from the above, along the rotation direction of the rotating bracket 22, the opening length of the first opening 130 (the dimension in the Y direction) can be the rotation stroke of the rotating bracket 22. Therefore, when the vertical projection of the first opening 130 on the side wall of the boss 212 overlaps with the vertical projection of the first magnetic conductive sheet 243 on the side wall of the boss, the first magnetic conductive sheet 243 can be arranged within the stroke range of the rotating bracket 22.

[0142] In this way, when the rotating bracket 22 rotates, the first magnetic conductive sheet 243 adsorbs the magnet assembly 241 along the thickness direction of the variable aperture 20, which can reduce the separation of the rotating bracket 22 from the fixed seat 21 during the rotation of the camera module 10 and improve the reliability of the variable aperture 20.

[0143] In addition, when adjusting the number, position of the first magnetic conductive sheet 243 and the distance between the first magnetic conductive sheet 243 and the magnet assembly 241, the adsorption force between the first magnetic conductive sheet 243 and the magnet assembly 241 can be adjusted. For example, as Figure 12 shown, each driving component 24 can include two first magnetic conductive sheets 243. When the variable aperture 20 has two driving components 24, the above variable aperture 20 can have four first magnetic conductive sheets 243 (the black filled parts).

[0144] In this case, the adsorption force between all the first magnetic conductive sheets 243 in the variable aperture 20 and the magnet assembly 241 can reach about 10 times the self-weight of the rotating bracket 22 and the magnet assembly 241. At this time, the friction force between the rotating bracket 22 and the fixed seat 21 in Figure 6A can be increased.

[0145] Based on this, continuing as Figure 6A shown, when the rotating bracket 22 rotates to drive the aperture hole 100 formed by the movement of multiple vanes 23 to reach an aperture position, such as the maximum aperture position (for example, four-aperture position), due to the large friction force between the rotating bracket 22 and the fixed seat 21, it is difficult for the rotating bracket 22 to rotate further relative to the fixed seat 21. Thus, the power supply to the coil 242 can be terminated, making the positions of the rotating bracket 22 and the fixed seat 21 relatively fixed (in a steady state), achieving the purpose of aperture self-locking. In this way, when the user takes pictures or shoots videos in a fixed scene and does not need to change the aperture, since the aperture is self-locked and the coil 242 is in a de-energized state (the current in the coil 242 can be 0), the purpose of reducing power consumption can be achieved.

[0146] For example, as Figure 13(Top view obtained along the Z direction in Figure 6A ), in the bottom plate 211 of the fixed seat 21, a second mounting groove 111 is formed in the part that serves as the bottom of the first mounting groove 110. The first magnetic sheet 243 ( Figure 12 shown) is located in the second mounting groove 111. In this way, by forming the second mounting groove 111 on the bottom plate 211, the first magnetic sheet 243 located in the second mounting groove 111 Figure 12 shown) can be embedded in the bottom plate of the fixed seat 21, so that the thickness of the first magnetic sheet 243 coincides with part of the thickness of the bottom plate 211, which is beneficial to reducing the thickness of the variable aperture 20. In addition, the second mounting groove 111 is arranged at one end of the coil mounting hole 123 for accommodating the coil 242 facing the boss 212, which can make the first magnetic sheet 243 located in the second mounting groove 111 closer to the magnetic attraction assembly 241 ( Figure 6A shown).

[0147] In some embodiments of the present application, the driving assembly 24 may include two first magnetic sheets 243, as Figure 14 shown, one end of the coil 242 facing the boss is located between the two first magnetic sheets 243. In this way, by increasing the number of the first magnetic sheets 243, the adsorption force between all the first magnetic sheets 243 and the magnetic attraction assembly can be improved, which is beneficial to achieving the purpose of self-locking of the aperture after the coil 242 is powered off as described above.

[0148] As can be seen from the above, as Figure 11 shown, the magnet assembly 241 with the above Halbach array structure can provide a large driving force to the rotating bracket 22. Therefore, the magnet assembly 241 with the above Halbach array structure can also be called a large-thrust magnet assembly 241. Therefore, by arranging the magnet assembly 241 with the above Halbach array structure, the problem that the rotation of the rotating bracket 22 relative to the fixed seat 21 is stuck due to excessive friction during the rotation process caused by the adsorption of the first magnetic sheet 243 (as Figure 14 shown) to the magnet assembly 241 can be solved, which is beneficial to increasing the fault tolerance of the product.

[0149] On this basis, as Figure 15 shown, the side wall of the boss 212 of the fixed seat 21 may include a connected first half-ring side wall 2121 and a second half-ring side wall 2122, and the above first half-ring side wall 2121 and the second half-ring side wall 2122 are spliced end to end to form the complete side wall of the boss 212. Figure 15The dashed line on the middle boss 212 serves as the demarcation line between the first half-ring side wall 2121 and the second half-ring side wall 2122. This dashed line is only an illustrative example of the division of the first half-ring side wall 2121 and the second half-ring side wall 2122, and does not constitute a limitation on the division method of the first half-ring side wall 2121 and the second half-ring side wall 2122. Moreover, the above-mentioned dashed line is not a structure actually existing on the boss 212. For example, when the boss 212 is a frustum of a cone, the arc lengths of the above-mentioned first half-ring side wall 2121 and the second half-ring side wall 2122 can be the same.

[0150] In addition, continuing as Figure 15 shown, the variable aperture 20 further includes a second magnetic conductive sheet 29 and a first rolling member 31. Among them, the second magnetic conductive sheet 29 is disposed on the first half-ring side wall 2121, and the second magnetic conductive sheet 29 is used for adsorption with the magnet assembly 241. Since the second magnetic conductive sheet 29 adheres to a partial side wall of the boss, for example, on the first half-ring side wall 2121, therefore, the above-mentioned second magnetic conductive sheet 29 can also be called a side magnetic conductive sheet.

[0151] And, continuing as Figure 15 shown, the vertical projection of the first opening 130 on the first half-ring side wall 2121 overlaps with the vertical projection of the second magnetic conductive sheet 29 on the first half-ring side wall 2121. As can be seen from the above, the coil 242 can be accommodated in the first opening 130, and the magnet assembly 241 is located on the side of the coil 242 facing the rotating bracket 22. Therefore, the magnet assembly 241 and the coil 242 are arranged in the Z direction layer. So at this time, a part of the assembly 241 can also be located in the above-mentioned first opening 130. In this way, when the vertical projection of the first opening 130 on the first half-ring side wall 2121 overlaps with the vertical projection of the second magnetic conductive sheet 29 on the first half-ring side wall 2121, the second magnetic conductive sheet 29 can be located near the magnet assembly 241, so that the second magnetic conductive sheet 29 can be more easily adsorbed by the magnet assembly 241.

[0152] In addition, continuing as Figure 15 shown, the first rolling member 31 is disposed between the rotating bracket 22 and the bottom plate 211, and the first rolling member 31 is located on the side where the second half-ring side wall 2122 is located. The rotating bracket 22 and the fixed seat 21 are in contact with the first rolling member 31, and the rotating bracket 22 is rotatably connected to the fixed seat 21 through the first rolling member 31. For example, a first rolling groove 310 for accommodating the first rolling member 31 can be provided on the fixed seat 21.

[0153] In this way, as Figure 16 (top view obtained along Figure 6A the Z direction in Figure 6AWhen adsorbed as shown, the rotating bracket 22 will move along the Y direction towards the position of the second half-ring side wall 2122 of the fixed seat 21 (for example, towards the right). Since the first rolling member 31 is located on the side where the second half-ring side wall 2122 is located, that is, the second magnetic conductive sheet 29 and the first rolling member 31 can be located on opposite sides of the boss 212, so as Figure 17 (in the sectional view obtained by cutting along the dashed line O1 - O2 in Figure 16 ) as shown, the rotating bracket 22 and the fixed seat 21 can be in contact with the first rolling member 31, that is, the first rolling member 31 is in a zero-fit (or tight-fit) state with both the rotating bracket 22 and the fixed seat 21.

[0154] In this case, continuing as shown in Figure 17 , when the rotating bracket 22 is rotatably connected to the fixed seat 21 through the first rolling member 31, since the rotating bracket 22 and the fixed seat 21 can be in contact with the first rolling member 31, the rotating bracket 22 can always lean on the first rolling member 31 during the rotation process, rotate relative to the fixed seat 21, thereby improving the stability of the rotating bracket 22 during the rotation process and the consistency when the rotating bracket 22 rotates to various angles, achieving the improvement of the reliability of the product.

[0155] For example, the first rolling member 31 can include a ball or a roller. Or the first rolling member 31 can also include multiple balls or multiple rollers. Taking the first rolling member 31 including multiple balls as an example, the above-mentioned multiple balls can be arranged along the thickness direction (i.e., the Z direction) of the variable aperture 20.

[0156] In addition, in some other embodiments of the present application, the variable aperture 20 further includes a second rolling member 32 as shown in Figure 18 . The second rolling member 32 can be arranged between the rotating bracket 22 (as shown in Figure 6A ) and the bottom plate 211 of the fixed seat 21, and the second rolling member 32 is located on the side where the first half-ring side wall 2121 is located. For example, a first rolling groove 320 for accommodating the second rolling member 32 can be provided on the fixed seat 21. There is an adjustment gap H1 between the second rolling member 32 and the rotating bracket 22 as shown in Figure 19 (in the sectional view obtained by cutting along the dashed line O1 - O2 in Figure 16 ), 30μm ≤ H1 ≤ 70μm.

[0157] As can be seen from the above, continuing as shown in Figure 19 , the second rolling member 32 and the second magnetic conductive sheet 29 are located on the same side of the boss 212, and the second magnetic conductive sheet 29 is connected to the magnet assembly 241 (as shown in Figure 6AWhen adsorbed to the object shown in the figure, the rotating bracket 22 will move towards the position where the second half-ring side wall 2122 of the fixed seat is located. In this case, the second rolling member 32 located on the side where the first half-ring side wall 2121 is located can have the above-mentioned adjustment gap H1 with the rotating bracket 22.

[0158] In this way, during the reliability test (such as rolling or dropping test, etc.) of the variable aperture 20 and the process of user use, when the rotating bracket 22 undergoes a large displacement in the horizontal plane (perpendicular to the optical axis of the variable aperture 20), the side of the rotating bracket 22 close to the second rolling member 32 can contact the second rolling member 32, so that the second rolling member 32 limits the further displacement of the rotating bracket 22, reduces the displacement amount of the rotating bracket 22, and thus avoids the phenomenon that when the rotating bracket 22 undergoes a large displacement, it pulls on the plurality of blades 23 that are slidably connected to the rotating bracket 22, resulting in damage to the blades 23.

[0159] Exemplarily, the second rolling member 32 can include a ball or a roller. Or the second rolling member 32 can also include a plurality of balls or a plurality of rollers. Taking the second rolling member 32 including a plurality of balls as an example, the above-mentioned plurality of balls can be arranged along the thickness direction (i.e., the Z direction) of the variable aperture 20.

[0160] On this basis, as shown in Figure 20 (the top view obtained by looking along the Z direction in Figure 6A ), the variable aperture 20 can include two driving components, two first rolling members 31, and two second rolling members 32. Among them, the two driving components are respectively the first driving component 2401 and the second driving component 2402. The first driving component 2401 is arranged on the side where the first half-ring side wall 2121 is located, and the second driving component 2402 is arranged on the side where the second half-ring side wall 2122 is located. The first driving component 2401 is located between the two second rolling members 32. The second driving component 2402 is located between the two first rolling members 31. In this way, by arranging the first driving component 2401 on the side where the first half-ring side wall 2121 of the boss 212 is located and arranging the second driving component 2402 on the side where the second half-ring side wall 2122 is located, the rotating bracket 22 can be evenly stressed during the rotation process.

[0161] In addition, by disposing the first driving component 2401 between the two second rolling members 32 and increasing the number of the second rolling members 32, during the reliability test (such as rolling or dropping test, etc.) of the variable aperture 20 and the user's use process, the displacement of the rotating bracket 22 can be further limited, effectively reducing the displacement amount of the rotating bracket 22. Moreover, by disposing the second driving component 2402 between the two first rolling members 31 and increasing the number of the first rolling members 31, the rotating bracket 22 can be in contact with the first rolling members 31 on both sides of the first driving component 2401, which is beneficial to further improve the consistency, stability and reliability of the movement.

[0162] The above takes the variable aperture 20 having two driving components, namely the first driving component 2401 and the second driving component 2402 (which can also be called the driving component 24 with bilateral setting) as an example for illustration. In some other embodiments of the present application, a driving component 24 (which can also be called the driving component 24 with unilateral setting) can also be provided.

[0163] As can be seen from the above, Figure 6A the magnet assembly 241 in the middle is connected to the rotating bracket 22 as the stator. Based on this, in some embodiments of the present application, the coil 242 can be indirectly or directly connected to the fixed seat 21 as the stator. The following takes examples to illustrate the connection manner between the coil 242 and the fixed seat 21.

[0164] For example, as Figure 21 shown, the variable aperture 20 may further include a flexible printed circuit (FPC) 27. The FPC 27 is disposed on the side of the fixed seat 21 facing away from the blade 23, and the FPC 27 is connected to the fixed seat 21. The coil 242 passes through the fixed seat 21 and is disposed on the side of the FPC 27 facing the rotating bracket 22, and the coil 242 is connected to the FPC 27. For example, during the assembly process of the variable aperture 20, the coil 242 can be first assembled with the whole FPC 27, and then the FPC 27 assembled with the coil 242 is bonded to the lower surface (i.e., the surface facing away from the cover plate 25) of the fixed seat 21 through a dispensing process. Based on this, the coil 242 can be indirectly connected to the fixed seat 21 through the FPC 27. In this way, compared with the solution of bending the FPC around the circumference of the mover into an arc shape, the FPC 27 of the present application does not need to be bent. As Figure 22 (the upward view obtained along the Figure 21 Z direction in

[0165] In addition, as described above, during the rotation of the rotating bracket 22 relative to the fixed base 21, it can drive the movement of multiple blades 23 to adjust the aperture of the aperture hole 100 surrounded by the multiple blades 23. Based on this, in order to control the rotation position of the rotating bracket 22 to achieve precise control of the aperture size of the aperture hole 100, the variable aperture 20 may further include, for example, Figure 23 (a top view obtained along Figure 21 the Z direction in

[0166] ) a rotation control chip (integrated circuit, IC) 28, which is used to control the rotation position of the rotating bracket 22. Figure 23 In some embodiments of the present application, continuing as Figure 3 shown, the rotation control chip 28 may be electrically connected to the FPC 27, so that the rotation control chip 28 is electrically connected to the circuit board 80 of the camera module 10 (such as Figure 23 shown) through the FPC 27, so that the processor on the circuit board 80 can transmit a control signal to the rotation control chip 28, and further enable the rotation control chip 28 to control the rotation position of the rotating shaft bracket. By way of example, the rotation control chip 28 may be a Hall chip. As described above,

[0167] the coil 242 shown in Figure 24 is connected to the FPC 27. Therefore, in some embodiments, both the coil 242 and the rotation control chip 28 may be disposed on the FPC 27. For example, the rotation control chip 28 is mounted (fixed) inside the coil 242, so as to save the layout space on the FPC 27. Figure 6A On this basis, as

[0168] shown, when the FPC 27 provided with the coil 242 is connected to the lower surface of the fixed base 21, in order to reduce the thickness of the variable aperture 20, a coil mounting hole 123 penetrating the bottom plate 211 (such as Figure 24 shown) may be opened on the bottom plate 211 of the fixed base 21, and the coil 242 may be disposed in the coil mounting hole 123, so that the coil 242 can pass through the fixed base 21. In this way, the thickness of the coil 242 overlaps with part of the thickness of the fixed base 21, achieving the purpose of reducing the thickness of the variable aperture 20.

[0169] Based on this, as described above, the lower surface of the coil 242 (parallel to the XY plane) is connected to the FPC 27, and the upper surface of the magnet assembly 241 (parallel to the XY plane) is connected to the rotating bracket 22. Therefore, the above-mentioned coil 242 and magnet assembly 241 are arranged horizontally (parallel to the XY plane) on the side of the rotating bracket 22 away from the blade 23. Therefore, compared with the solution of arranging the coil and magnet on the circumferential side of the rotating bracket 22, the size of the variable aperture 20 in the XY plane can be reduced.

[0170] In addition, a coil mounting hole 123 for accommodating the coil 242 is formed on the bottom plate 211 of the fixed seat 21 (as Figure 6A shown), and a first opening 130 for accommodating the magnet assembly 241 is formed on the side plate 213 of the fixed seat 21 (as Figure 6A shown). Therefore, along the Figure 24 Z direction shown, the thickness of the coil 242 overlaps with that of the fixed seat 21, and the thickness of the magnet assembly 241 overlaps with that of the fixed seat 21, so that the thickness of the variable aperture 20 in the Z direction can be reduced.

[0171] In summary, the variable aperture 20 provided by the embodiment of the present application is a moving magnet type structure in which the FPC 27 is attached to the bottom of the fixed seat 21, and the coil 242 and the magnet assembly 241 are arranged horizontally, having the advantages of few components, simple structural process, small size, light weight, good reliability and low cost.

[0172] On this basis, in order to improve the reliability of the variable aperture 20, in some embodiments of the present application, the fixed seat 21 may include a first plastic part 2101 and a first metal bracket 2102 as Figure 25 shown. Among them, the material of the first plastic part 2101 includes plastic materials, such as polyester, polyethylene, etc. The first plastic part 2101 may include the above-mentioned bottom plate 211, boss 212 and side plate 213. In addition, the material of the first metal bracket 2102 may include at least one metal element. For example, the first metal bracket 2102 may be a stainless steel bracket. The first metal bracket 2102 may include a first metal part 214 and a second metal part 215.

[0173] Based on this, as Figure 26As shown, the first metal bracket 2102 can be embedded in the first plastic part 2101, and the first metal bracket 2102 and the first plastic part 2101 are connected to form a first integral structural member 2100. In this way, the above-mentioned first integral structural member 2100 can be formed by an insert molding process. Among them, the first metal part 214 can be located in the bottom plate 211 to strengthen the stiffness of the part of the fixing seat 21 located in the bottom plate 211. The second metal part 215 is disposed in the side plate 213 to strengthen the stiffness of the part of the fixing seat 21 located in the side plate 213.

[0174] Since the fixing seat 21 has the first metal bracket 2102, the mechanical strength of the fixing seat 21 can be increased. When the fixing seat 21 is impacted during the reliability test (such as rolling or dropping test, etc.) of the variable aperture 20 and the user uses it, the probability of damage to the fixing seat 21 can be reduced, achieving the purpose of extending the service life of the product. As can be seen from the above, the material of the first metal bracket 2102 can include stainless steel. In the following embodiments, the material of the metal component located in the plastic part formed by the insert molding process can also include the above-mentioned stainless steel.

[0175] On this basis, as Figure 27 shown, the first plastic part 2101 can have a first hollow area 140, and the first hollow area 140 can expose a part of the surface of the first metal bracket 2102. By way of example, as Figure 25 shown, the second metal part 215 of the first metal bracket 2102 can include a metal plate 2151. Figure 27 The first hollow area 140 in

[0176] can expose at least a part of the metal plate 2151. The exposed surface of the metal plate 2151 is used to make a product identification code. In this way, the product identification code for characterizing product-related information can be directly prepared on the first metal bracket 2102 without separately setting a steel sheet for making and attaching the product identification code, thereby reducing the number of components and achieving the purpose of simplifying the manufacturing process. By way of example, the above-mentioned product identification code can be a two-dimensional code, numbers, letters, or character codes, etc., and the present application does not limit this. Figure 28 shown, the first metal bracket 2102 can also be grounded to the FPC 27. By way of example, a part of the first metal part 214 of the first metal bracket 2102 ( Figure 28The part circled by the dotted line (not shown in the figure) can be electrically connected to the exposed copper area on the FPC 27 (not shown in the figure) through conductive adhesive to ground the first metal bracket 2102, thereby achieving the purpose of reducing electromagnetic interference. The material of the above-mentioned conductive adhesive is not limited in this application, as long as it can ensure that the conductive adhesive can ground the first metal bracket 2102 to the FPC 27.

[0177] The above takes the coil 242 in the driving component 24 being arranged on the FPC 27, and the FPC 27 being connected to the bottom of the fixing base 21, so that the coil 242 is indirectly connected to the fixing base 21 through the FPC 27 as an example to illustrate the setting method of the coil 242.

[0178] Or, in some other embodiments of the present application, as Figure 29 shown, the coil 242 is directly arranged on the fixing base 21, and the coil 242 is connected to the fixing base 21. For example, a coil mounting groove 124 can be arranged on the bottom plate 211 of the fixing base 21, and the above-mentioned coil 242 can be located in the coil mounting groove 124, and the bottom of the coil mounting groove 124 can carry the coil 242. Similarly, the fixing base 21 as the stator is in a stationary state relative to the rotating bracket 22 during the process of the aperture 100 of the variable aperture 20 changing. In this way, the coil 242 arranged on the fixing base 21 can be in a stationary state relative to the magnet assembly 241 arranged on the rotating bracket 22, so that the above-mentioned variable aperture 20 is still the above-mentioned moving magnet type variable aperture 20.

[0179] Similarly, Figure 29 the fixing base 21 shown can also be prepared by the above-mentioned insert injection molding process. In this case, as Figure 30 shown, the fixing base 21 can include a first plastic part 2101 and a first metal bracket 2102. The structures and technical effects of the first plastic part 2101 and the first metal bracket 2102 are the same as those described above, and will not be repeated here.

[0180] On this basis, continuing as Figure 29 shown, the above-mentioned rotation control chip 28 can be arranged in the coil 242. Based on this, in some embodiments of the present application, the FPC electrically connected to the rotation control chip 28 may not need to be arranged in the variable aperture 20. In order to electrically connect Figure 3 the circuit board 80 shown to the rotation control chip 28, as Figure 30As shown, the above-mentioned fixed seat 21 may further include a metal ground trace 2103, a metal signal trace 2104, a metal ground terminal 2105, and a metal signal terminal 2106. The materials of the above-mentioned metal ground trace 2103, metal signal trace 2104, metal ground terminal 2105, and metal signal terminal 2106 may be the same as or different from the material of the first metal bracket 2102, and the present application does not limit this.

[0181] Among them, as Figure 31 shown, the metal signal trace 2104 may be electrically connected to the rotation control chip 28 and the metal signal terminal 2106, and the metal ground trace 2103 may be electrically connected to the rotation control chip 28 and the metal ground terminal 2105. The metal signal terminal 2106 and the metal ground terminal 2105 may be electrically connected to Figure 3 the circuit board 80 shown.

[0182] In this way, the metal ground trace 2103, the metal signal trace 2104, the metal ground terminal 2105, and the metal signal terminal 2106 can replace the above-mentioned FPC27, so that the control signal sent by the processor on the circuit board 80 can be transmitted to the rotation control chip 28 through the above-mentioned metal ground trace 2103, metal signal trace 2104, metal ground terminal 2105, and metal signal terminal 2106. The present application does not limit the number of the above-mentioned metal ground terminal 2105 and metal signal terminal 2106, Figure 31 and the example illustration is given with two metal ground terminals 2105 and two metal signal terminals 2106.

[0183] In addition, the metal ground terminal 2105 may be grounded to Figure 3 the circuit board 80 shown. Therefore, as Figure 31 shown, the above-mentioned metal ground trace 2103 may also be electrically connected to the first metal bracket 2102, so that the first metal bracket 2102 can be grounded to the circuit board 80 through the metal ground trace 2103 and the metal ground terminal 2105.

[0184] In this case, as Figure 32 shown, the first metal bracket 2102, the metal ground trace 2103, and the metal signal trace 2104 are embedded in the first plastic part 2101, and the metal signal trace 2104, the metal ground trace 2103, the first metal bracket 2102, and the first plastic part 2101 are connected into a first integral structural member 2100. As described above, the above-mentioned first integral structural member 2100 can be formed by an insert molding process. Among them, the technical effects of the first integral structural member 2100 are the same as those described above and will not be elaborated here. At least a part of the metal ground terminal 2105 and the metal signal terminal 2106 is exposed outside the first plastic part 2101.

[0185] In this way, as shown in Figure 33 , components such as the rotating bracket 22, the magnet assembly 241, the coil 242, and the blade 23 are arranged in the accommodation space between the cover plate 25 and the fixed seat 21 to form a variable aperture 20. The variable aperture 20 can be electrically connected to the Figure 3 shown circuit board 30 through the metal ground terminal 2105 and the metal signal terminal 2106 exposed outside the above accommodation space, so that there is no need to set an FPC inside the variable aperture 20, achieving the purpose of simplifying the structure. In addition, the coil 242 directly connected to the fixed seat 21 can also be electrically connected to the metal signal trace 2104 in the fixed seat 21 to supply power to the coil 242. At this time, the coil 242 can be electrically connected to the entire fixed seat 21 through the above metal signal trace 2104, so that there is no need to additionally set a circuit board for supplying power to the coil 242.

[0186] In summary, the above is an example of the setting method of the coil 242 in the variable aperture 20. Among them, Figure 4 in the shown variable aperture 20, the coil 242 is arranged on the FPC 27, and the FPC 27 is connected to the fixed seat 21. Figure 33 in the shown variable aperture 20, there is no need to set an FPC, and the coil 242 is directly connected to the fixed seat 21. For any of the above variable apertures 20, the rotating bracket 22 can be rotatably connected to the fixed seat 21. For the convenience of description below, an example is given with the Figure 4 shown variable aperture 20 with an FPC 27 as an example.

[0187] In some embodiments of the present application, as shown in Figure 34 , the rotating bracket 22 may include a second plastic part 2201 and a second metal bracket 2202. The materials of the second plastic part 2201 and the second metal bracket 2202 can be obtained in the same way and will not be elaborated here. As shown in Figure 35 , the second metal bracket 2202 is embedded in the second plastic part 2201, and the second metal bracket 2202 and the second plastic part 2201 are connected to form a second integral structural part 2200.

[0188] Similarly, the above second integral structural part 2200 can be formed by the above insert molding process. Since the rotating bracket 22 has the second metal bracket 2202, the mechanical strength of the rotating bracket 22 can be increased. When the variable aperture 20 is subjected to reliability tests (such as rolling or dropping tests, etc.) and during user use, when the rotating bracket 22 is impacted, the probability of damage to the rotating bracket 22 can be reduced, achieving the purpose of extending the service life of the product.

[0189] In addition, continuing as shown in Figure 35As shown, the magnet assembly 241 is connected to and adsorbed by the second metal bracket 2202. In this way, for example, as Figure 36 (elevation view obtained along the Figure 35 Z direction in

[0190] shown), a part of the second metal bracket 2202 can be used as the bearing part of the magnet assembly 241, and the side surface of this bearing part facing the magnet assembly 241 is dot-glued, so that the magnet assembly 241 is connected to the second metal bracket 2202. Figure 36 On this basis, continue as

[0191] In some embodiments of the present application, the variable aperture 20 further includes a cover plate 25 as Figure 37 shown. The cover plate 25 is arranged on the side of the plurality of blades 23 away from the rotating bracket 22, and the cover plate 25 covers the fixed seat 21. A second light-transmitting hole 102 is provided on the cover plate 25. When the cover plate 25 covers the fixed seat 21, the second light-transmitting hole 102 can communicate with the aperture hole 100.

[0192] In addition, in some embodiments of the present application, as Figure 38 shown, the cover plate 25 may include a third plastic part 2501, a third metal bracket 2502, and a first gasket 2503 (soma). The materials of the third plastic part 2501 and the third metal bracket 2502 can be obtained in the same way and will not be elaborated here. As Figure 39 shown, the third metal bracket 2502 is embedded in the third plastic part 2501, and the third metal bracket 2502 and the third plastic part 2501 are connected to form a third integral structural part 2500.

[0193] Similarly, the above-mentioned third integral structural part 2500 can be formed by the above-mentioned insert injection molding process. Since the cover plate 25 has the third metal bracket 2502, the mechanical strength of the cover plate 25 can be increased. When the variable aperture 20 undergoes reliability tests (such as rolling or dropping tests, etc.) and during user use, when the cover plate 25 is impacted, the probability of damage to the cover plate 25 can be reduced, achieving the purpose of extending the service life of the product.

[0194] In some embodiments of the present application, continue as Figure 38As shown, the third metal bracket 2502 has a plurality of hollow portions 25011 penetrating through the third metal bracket 2502, and the hollow portions 25011 are arranged around the second light-transmitting hole 102. In this way, the second light-transmitting hole 102 that is connected to the aperture hole 100 can be used to allow external light to enter the aperture hole 100 through the second light-passing hole. In addition, by providing a plurality of hollow portions 25011 on the third metal bracket 2502, compared with the cover plate 25 made entirely of metal, the weight of the entire third metal bracket 2502 can be reduced, achieving the purpose of reducing the weight of the cover plate 25 and the entire variable aperture 20.

[0195] In addition, as Figure 40 shown, the third metal bracket 2502 is connected to the first metal bracket 2102. For example, the third metal bracket 2502 in the cover plate 25 can be connected to the first metal bracket 2102 in the fixed seat 21 by welding, so as to increase the reliability of the connection between the cover plate 25 and the fixed seat 21 and reduce the probability of the cover plate 25 falling off.

[0196] In some embodiments of the present application, a plurality of welding positions a1 can be provided on the cover plate 25 (as Figure 38 shown, taking 6 welding positions a1 as an example), and the plurality of welding positions a1 can be arranged around the circumference of the aperture hole 100. In addition, as Figure 25 shown, the second metal portion 215 of the first metal bracket 2102 can further include a plurality of metal rods 2152 and a plurality of welding portions 2153, and one metal rod 2152 is connected to one welding portion 2153. When the cover plate 25 has 6 welding positions a1 (as Figure 40 shown), the first metal bracket 2102 can have 6 metal rods 2152 and 6 welding portions 2153. In this case, one welding portion 2153 of the first metal bracket 2102 can be welded to one welding position a1 of the cover plate 25, so as to improve the connection stability between the cover plate 25 and the fixed seat 21. Moreover, the riveting and dispensing processes can be avoided, enhancing the reliability strength while reducing the process flow of the motor 41 and lowering the overall cost.

[0197] On this basis, continuing as Figure 40 shown, after the third metal bracket 2502 is welded to the first metal bracket 2102, the third metal bracket 2502 can be electrically connected to the first metal bracket 2102, so that the third metal bracket 2502 can be grounded to the above-mentioned FPC 27 through the first metal bracket 2102 (as Figure 37 shown).

[0198] In this way, the manufacturing process of grounding the cover plate 25 can be simplified. In the related art, as Figure 41As shown, it is necessary to electrically connect and ground the part led out by the FPC from the metal cover plate mainly composed of steel plates through dotting glue, and then cover the dotting glue protection glue at the dotting glue position. Compared with the related art, in this application, only the Figure 40 third metal bracket 2502 in the cover plate 25 shown in FIG. is electrically connected to the first metal bracket 2102 in the fixed seat 21, for example, by welding or dotting glue, so that there is no need to additionally provide the part led out by the FPC, and the two processes of the dotting glue layer and the dotting glue protection glue for electrically connecting the part led out by the FPC and the metal cover plate are not required, thereby achieving the purpose of simplifying the structure, reducing the manufacturing process, and reducing the cost of the variable aperture 20.

[0199] Or, in some other embodiments of this application, Figure 40 grounding can be achieved between the third metal bracket 2502 in the cover plate 25 shown in FIG. and the first metal bracket 2102 in the fixed seat 21 by dotting glue (for example, dotting silver glue) or the like.

[0200] In addition, continuing as shown in Figure 38 FIG., the above-mentioned first gasket 2503 is stacked on one side of the third integral structure 2500 (including the third plastic part 2501 and the third metal bracket 2502) facing away from the blade 23 (as shown in Figure 37 FIG.). The first gasket 2503 is located on the top surface of the variable aperture 20. The first gasket 2503 can block a part of the structure of the blade 23 below the cover plate 25, so that the surface of the first gasket 2503 facing away from the above-mentioned third integral structure serves as the appearance surface visible to the user, achieving the effects of decoration, improving the appearance quality and appearance delicacy, and being able to increase the control area of the external product appearance to the greatest extent, meeting the design requirements of industrial design (ID).

[0201] In addition, since the third metal bracket 2502 in the cover plate 25 is located inside the third plastic part 2501, and the cover plate 25 is arranged on one side of the plurality of blades 23 facing away from the rotating bracket 22. In this way, during the rotation of the blade 23, the component that comes into direct contact with and rubs against the blade 23 is the third plastic part 2501 in the cover plate 25. The surface of the third plastic part 2501 can have a relatively small friction coefficient compared with the surface of the metal material, so that the friction force between the blade 23 and the third plastic part 2501 can be reduced, and further the probability of wear (for example, the appearance of whitening due to abrasion) of the blade 23 during the reliability test or use process can be reduced.

[0202] In some embodiments of this application, Figure 21 the second gasket 26 in Figure 38 the first gasket 2503 in Figure 37The blades 23 therein can be made of the same material. The specular reflectance G (Gloss), optical density value OD, L value, a value, and b value in the material color triple of the above materials can be respectively: R ≤ 0.3%; OD value ≥ 5.0; L ≤ 8; |a| ≤ 1; |b| ≤ 1.

[0203] Among them, the specular reflectance G can be measured by a multi-angle gloss meter (for example, measured at the common visual angle of 60°). The lower the specular reflectance G, the more matte. The smaller the L value, the higher the blackness. The a value and b value represent chromaticity indices, representing the degree of color deviation. The higher the numerical values of the a value and b value, the deeper the hue. In addition, the higher the above optical density value OD, the lower the transmittance and the higher the absorption rate. When the optical density value OD is higher than 5, the light transmittance is much less than 1%.

[0204] In this way, when the specular reflectance G, optical density value OD, L value, a value, and b value in the material color triple of the second gasket 26, the first gasket 2503, and the blade 23 can be respectively: R ≤ 0.3%; OD value ≥ 5.0; L ≤ 8; |a| ≤ 1; |b| ≤ 1, the materials of the above second gasket 26, the first gasket 2503, and the blade 23 can all be super-black materials, so that during the movement of the blade 23, the colors and glossiness of the parts of the first gasket 2503, the second gasket 26, and the blade 23 that the user can see are all the same, reducing the probability of color difference between the above three components and improving the appearance quality.

[0205] Moreover, when the materials used for the second gasket 26, the first gasket 2503, and the blade 23 are all the above super-black materials, the blackness of the super-black materials is good, meeting the requirements of the appearance design, and the wear resistance is good. Or the second gasket 26, the first gasket 2503, and the blade 23 can adopt a base material, and the above super-black materials can be coated or attached to the surface of the base material, which can also meet the requirements of appearance consistency.

[0206] In addition, the mechanical properties of the second gasket 26, the first gasket 2503, and the blade 23 using the same material can meet the following requirements: modulus ≥ 3000 MPa, yield strength / fracture strength ≥ 80 MPa (wherein, if there is no obvious yield phenomenon, only the fracture strength needs to be concerned), and elongation at break ≥ 10%. In this way, during the reliability test, 2 rounds or 5 rounds of drop tests can be passed, and 500 times of drum tests can be passed. Among them, when the variable aperture 20 passes through the drum test more than 1000 times, there is a certain risk. And the service life of the variable aperture 20 can reach 250,000 times.

[0207] In some embodiments of the present application, such as Figure 42As shown, the fixed seat 21 may further include an anti-collision structure 34. The anti-collision structure 34 may be wound around the periphery of the rotating bracket 22 and protrude from the surface of the cover plate 25 facing away from the blade 23. For example, the height D of the anti-collision structure 34 may be about 0.08 mm. Exemplarily, the anti-collision structure is as follows Figure 40 As shown, the anti-collision structure 34 may be disposed on the side plate 213 of the fixed seat 21 on the side facing away from the bottom plate 211, and the fixed seat 21 may have four anti-collision structures 34. The present application does not limit the number of the anti-collision structures 34.

[0208] In this way, the part of the fixed seat 21 around the periphery of the rotating bracket 22 and protruding from the cover plate 25, such as the above-mentioned anti-collision structure 34, may contact the lens covering the camera module 10 or other decorative components on the rear shell 03 of the electronic device 01 (as shown in Figure 1 ) Thus, during product testing (for example, rolling reliability testing) or user use, it is possible to reduce the direct contact friction between the cover plate 25 and the above-mentioned lens or other device components, so as to avoid the appearance defect caused by the wear of the top surface of the cover plate 25, and improve the appearance, life and reliability of the product.

[0209] In addition, as can be seen from the above, the variable aperture 20 may be connected to the lens assembly 40 in Figure 3 . Based on this, in order to improve the connection reliability between the variable aperture 20 and the lens assembly 40, in some embodiments of the present application, as shown in Figure 43 , the fixed seat 21 further includes an adhesive structure 35. The adhesive structure 35 may be disposed on the surface of the bottom plate 211 of the fixed seat 21 facing away from the side plate 213. The bottom surface A1 of the above-mentioned adhesive structure 35 and the surface A2 of the bottom plate 211 facing away from the side plate 213 may both be connected to the lens assembly 40 located below the variable aperture 20.

[0210] In this way, the surfaces (i.e., the surfaces A1 and A2 of the fixed seat 21) where the variable aperture 20 is connected to the lens assembly 40 can be uneven surfaces. On this basis, as shown in Figure 44 , the lens assembly 40 may have an adhesive groove 36 that cooperates with the adhesive structure 35. Therefore, the surface where the lens assembly 40 is connected to the variable aperture 20 can also be an uneven surface that matches the above-mentioned surfaces A1 and A2, so as to improve the connection stability between the variable aperture 20 and the lens assembly 40 when the variable aperture 20 is adhered to the lens assembly 40.

[0211] Exemplarily, continuing as shown in Figure 43As shown, the vertical projection of the bonding structure 35 on the bottom plate 211 is a sector, which has a first arc edge 351 and a second arc edge 352, and the arc length of the first arc edge 351 can be greater than that of the second arc edge 352. Among them, the first arc edge 351 is arranged away from the boss 212 relative to the second arc edge 352. At this time, the bonding structure 35 can be a dovetail structure. As Figure 44 shown, the bonding groove 36 where the lens assembly 40 cooperates with the bonding structure 35 can be a dovetail groove matching the above dovetail structure.

[0212] Based on this, when the camera module 10 is working, the dovetail-shaped bonding structure 35 and the bonding groove 36 that cooperate with each other in the horizontal plane (the surface perpendicular to the optical axis of the variable aperture 20) can prevent shear in the horizontal plane along the X and Y directions. In addition, along the rotation direction of the blades 23 in the variable aperture 20, the contact area between the side wall of the above dovetail structure and the above dovetail groove is relatively large, which can effectively limit the variable aperture 20 to achieve the limitation of the position of the variable aperture 20.

[0213] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any change or replacement within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claimed rights.

Claims

1. A variable aperture (20), characterized in that: include: A fixing seat (21) having a first light-transmitting hole (101); the fixing seat (21) comprises a bottom plate (211) and a side plate (213); the side plate (213) is arranged on the bottom plate (211) and surrounds the first light-transmitting hole (101); a first opening (130) is provided on the side plate (213); a rotating bracket (22), located in the fixing seat (21) and rotatably connected to the fixing seat (21); the rotating bracket (22) comprises an annular portion (221) and a lug (222); the annular portion (221) is arranged around the periphery of the first light-transmitting hole (101), and the lug (222) is arranged on the side wall of the annular portion (221); the lug (222) is located in the first opening (130); A plurality of blades (23) are arranged on the rotating bracket (22); the blades (23) are slidably connected to the annular portion (221) and are rotatably connected to the fixing seat (21); the plurality of blades (23) are distributed in an annular shape to surround an aperture hole (100); the aperture hole (100) is connected to the first light-transmitting hole (101); At least one drive assembly (24), the drive assembly (24) comprising: A magnet assembly (241) is arranged on a side of the lug (222) facing away from the blade (23); A coil (242) is arranged on a side of the magnet assembly (241) facing the fixing seat (21); The variable aperture (20) further comprises a flexible circuit board FPC (27), and the FPC (27) is connected to the fixing seat (21); The coil (242) is arranged on the surface of the FPC (27) facing the rotating bracket (22), the lower surface of the coil (242) is connected to the metal wiring of the FPC (27), and the FPC (27) is used to supply power to the coil (242) through the metal wiring.

2. The variable aperture (20) according to claim 1, characterized in that: The fixing seat (21) further comprises: The boss (212) is arranged on the bottom plate (211), and the first light-transmitting hole (101) passes through the boss (212) and the bottom plate (211); the side plate (213) is arranged around the periphery of the boss (212); the side plate (213), the side wall of the boss (212) and the bottom plate (211) surround a first installation groove (110), and at least a part of the rotating bracket (22) is located in the first installation groove (110).

3. The variable aperture (20) according to claim 2, characterized in that: The annular portion (221) is located in the first mounting groove (110) and is arranged around the periphery of the boss (212); Wherein, the first opening (130) is communicated with the first installation groove (110).

4. The variable aperture (20) according to any one of claims 1 to 3, characterized in that: A travel gap is provided between the lug (222) and the side wall of the first opening (130).

5. The variable aperture (20) according to any one of claims 1 to 3, characterized in that: The FPC (27) is arranged on a side of the fixing seat (21) away from the blade (23); The coil (242) passes through the fixing seat (21).

6. The variable aperture (20) according to claim 1, characterized in that: The fixing seat (21) comprises: A first plastic part (2101); The first metal bracket (2102) is embedded in the first plastic part (2101), and the first metal bracket (2102) and the first plastic part (2101) are connected to form a first integrated structural part (2100); the first metal bracket (2102) is grounded on the FPC (27).

7. The variable aperture (20) according to claim 6, characterized in that: The first plastic part (2101) has a first hollow area (140), and the first hollow area (140) exposes a portion of the surface of the first metal bracket (2102), and the surface is used to make a product identification code.

8. The variable aperture (20) according to any one of claims 1 to 3, 6 or 7, characterized in that: The variable aperture (20) further comprises a cover plate (25), wherein the cover plate (25) is arranged on a side of the plurality of blades (23) away from the rotating bracket (22), and the cover plate (25) is covered on the fixing seat (21); The cover plate (25) comprises: The third plastic part (2501); A third metal bracket (2502) is embedded in the third plastic part (2501), and the third metal bracket (2502) and the third plastic part (2501) are connected to form a third integrated structural part (2500); The first gasket (2503) is stacked on a side of the third integral structural member (2500) facing away from the blade (23).

9. The variable aperture (20) according to claim 8, characterized in that: The fixing seat (21) comprises a first plastic part (2101) and a first metal bracket (2102); the first metal bracket (2102) is embedded in the first plastic part (2101); The third metal bracket (2502) is connected to the first metal bracket (2102).

10. The variable aperture (20) according to claim 9, characterized in that: The third metal bracket (2502) is electrically connected to the first metal bracket (2102), and the third metal bracket (2502) is grounded through the first metal bracket (2102).

11. The variable aperture (20) according to claim 8, characterized in that: The cover plate (25) has a second light-transmitting hole (102), and the second light-transmitting hole (102) is connected to the aperture hole (100); The third metal bracket (2502) has a plurality of hollow portions (25011) penetrating the third metal bracket (2502), and the hollow portions (25011) are arranged around the second light-transmitting hole (102).

12. The variable aperture (20) according to claim 8, characterized in that: The variable aperture (20) further comprises: The second gasket (26) is stacked on a side of the plurality of blades (23) facing the fixing seat (21); a third light-transmitting hole (103) is provided on the second gasket (26), and the third light-transmitting hole (103) is connected to the aperture hole (100).

13. The variable aperture (20) according to claim 12, characterized in that: The second gasket (26), the first gasket (2503) and the blade (23) are made of the same material; the specular reflectance G, optical density value OD, L value, a value and b value in the material color triplet are respectively: G≤0.3%; OD value≥5.0; L≤8; |a|≤1; |b|≤1.

14. The variable aperture (20) according to claim 13, characterized in that: The modulus of the material of the second gasket (26), the first gasket (2503) and the blade (23) is greater than or equal to 3000 MPa, the yield strength is greater than or equal to 80 MPa, and the elongation at break is greater than or equal to 10%.

15. The variable aperture (20) according to claim 8, characterized in that: The fixed seat (21) is arranged around the periphery of the rotating bracket (22) and protrudes from the surface of the cover plate (25) away from the blade (23).

16. The variable aperture (20) according to any one of claims 1 to 3, 6 or 7, characterized in that: The fixing seat (21) further comprises a boss (212), wherein the boss (212) is arranged on the bottom plate (211); The drive assembly (24) further comprises: A first magnetic conductive sheet (243) is arranged on a side of the bottom plate (211) facing the rotating bracket (22), and the first magnetic conductive sheet (243) is used to be adsorbed with the magnet assembly (241); a vertical projection of the first opening (130) on the side wall of the boss (212) overlaps with a vertical projection of the first magnetic conductive sheet (243) on the side wall of the boss (212).

17. The variable aperture (20) according to claim 16, characterized in that: A second mounting groove (111) is provided on the bottom plate (211), and the first magnetic conductive sheet (243) is located in the second mounting groove (111); the second mounting groove (111) is arranged at one end of the coil (242) away from the side plate (213).

18. The variable aperture (20) according to claim 16, characterized in that: The driving component (24) comprises two first magnetic conductive sheets (243), and one end of the coil (242) facing the boss (212) is located between the two first magnetic conductive sheets (243).

19. The variable aperture (20) according to any one of claims 2, 3, 6 or 7, characterized in that: The fixing seat (21) further comprises a boss (212), wherein the boss (212) is arranged on the bottom plate (211); the side wall of the boss (212) comprises a first semi-ring side wall (2121) and a second semi-ring side wall (2122) connected to each other; The variable aperture (20) further comprises: a second magnetic conductive sheet (29) disposed on the first semi-ring side wall (2121), the second magnetic conductive sheet (29) being used to be adsorbed with the magnet assembly (241); a vertical projection of the first opening (130) on the first semi-ring side wall (2121) overlaps with a vertical projection of the second magnetic conductive sheet (29) on the first semi-ring side wall (2121); A first rolling member (31) is arranged between the rotating bracket (22) and the bottom plate (211), and the first rolling member (31) is located on the side where the second semi-ring side wall (2122) is located; the rotating bracket (22) and the fixed seat (21) are in contact with the first rolling member (31), and the rotating bracket (22) is rotatably connected to the fixed seat (21) via the first rolling member (31).

20. The variable aperture (20) according to claim 19, characterized in that: The variable aperture (20) further comprises: A second rolling member (32) is arranged between the rotating bracket (22) and the bottom plate (211), and the second rolling member (32) is located on the side where the first semi-ring side wall (2121) is located; an adjustable gap H1 is provided between the second rolling member (32) and the rotating bracket (22), and 30 μm≤H1≤70 μm.

21. The variable aperture (20) according to claim 20, characterized in that: The variable aperture (20) comprises: The two driving components (24) are respectively a first driving component (2401) and a second driving component (2402); the first driving component (2401) is arranged on the side where the first semi-ring side wall (2121) is located; the second driving component (2402) is arranged on the side where the second semi-ring side wall (2122) is located; Two of the first rolling members (31), the second driving assembly (2402) being located between the two of the first rolling members (31); Two of the second rolling members (32), and the first driving component (2401) is located between the two of the second rolling members (32).

22. The variable aperture (20) according to any one of claims 1 to 3, 6 or 7, characterized in that: The rotating support (22) comprises: A second plastic part (2201); The second metal bracket (2202) is embedded in the second plastic part (2201), and the second metal bracket (2202) and the second plastic part (2201) are connected to form a second integrated structural part (2200); the magnet assembly (241) and the second metal bracket (2202) are connected and adsorbed to each other.

23. The variable aperture (20) according to any one of claims 1 to 3, 6 or 7, characterized in that: In the same driving component (24), a vertical projection of the magnet component (241) on the rotating bracket (22) overlaps with a vertical projection of the coil (242) on the rotating bracket (22).

24. The variable aperture (20) according to any one of claims 1 to 3, 6 or 7, characterized in that: The fixing seat (21) further comprises: The bonding structure (35) is arranged on the surface of the bottom plate (211) facing away from the side plate (213).

25. The variable aperture (20) according to claim 24, characterized in that: The fixing seat (21) further comprises a boss (212), wherein the boss (212) is arranged on the bottom plate (211); The vertical projection of the bonding structure (35) on the bottom plate (211) is a fan-shaped shape, the fan-shaped shape has a first arc-shaped edge (351) and a second arc-shaped edge (352), and the arc length of the first arc-shaped edge (351) is greater than the arc length of the second arc-shaped edge (352); Wherein, the first arc-shaped edge (351) is arranged away from the boss (212) relative to the second arc-shaped edge (352).

26. A variable aperture (20), characterized in that: include: A fixing seat (21) having a first light-transmitting hole (101); the fixing seat (21) comprises a bottom plate (211) and a side plate (213); the side plate (213) is arranged on the bottom plate (211) and surrounds the first light-transmitting hole (101); a first opening (130) is formed on the side plate (213), and the first opening (130) penetrates the side plate (213) in a direction perpendicular to the bottom plate (211); a rotating bracket (22), located in the fixing seat (21) and rotatably connected to the fixing seat (21); the rotating bracket (22) comprises an annular portion (221) and a lug (222); the annular portion (221) is arranged around the periphery of the first light-transmitting hole (101), and the lug (222) is arranged on the side wall of the annular portion (221); the lug (222) is located in the first opening (130), and the first opening (130) exposes the side surface of the lug (222); A plurality of blades (23) are arranged on the rotating bracket (22); the blades (23) are slidably connected to the annular portion (221) and are rotatably connected to the fixing seat (21); the plurality of blades (23) are distributed in an annular shape to surround an aperture hole (100); the aperture hole (100) is connected to the first light-transmitting hole (101); At least one drive assembly (24), the drive assembly (24) comprising: A magnet assembly (241) is arranged on a side of the lug (222) facing away from the blade (23); A coil (242) is arranged on a side of the magnet assembly (241) facing the fixing seat (21); The coil (242) is disposed on the fixing seat (21) and is directly connected to the fixing seat (21); The fixing seat (21) comprises: A first plastic part (2101); A first metal bracket (2102) embedded in the first plastic part (2101); A metal grounding wire (2103) is embedded in the first plastic part (2101), and the metal grounding wire (2103) is connected to the first metal bracket (2102); A metal signal trace (2104) is embedded in the first plastic part (2101), and the metal signal trace (2104), the metal ground trace (2103), the first metal bracket (2102) and the first plastic part (2101) are connected to form a first integrated structural part (2100); the metal signal trace (2104) is electrically connected to the coil (242); A metal grounding terminal (2105) is disposed outside the first plastic part (2101), and the metal grounding terminal (2105) is connected to the metal grounding trace (2103); The metal signal terminal (2106) is disposed outside the first plastic part (2101), and the metal signal terminal (2106) is connected to the metal signal trace (2104).

27. The variable aperture (20) according to claim 26, characterized in that The variable aperture (20) further comprises a cover plate (25), wherein the cover plate (25) is arranged on a side of the plurality of blades (23) away from the rotating bracket (22), and the cover plate (25) is covered on the fixing seat (21); The cover plate (25) comprises: The third plastic part (2501); A third metal bracket (2502) is embedded in the third plastic part (2501), and the third metal bracket (2502) and the third plastic part (2501) are connected to form a third integrated structural part (2500); the third metal bracket (2502) is connected to the first metal bracket (2102); The first gasket (2503) is stacked on a side of the third integral structural member (2500) facing away from the blade (23).

28. The variable aperture (20) according to claim 27, characterized in that The third metal bracket (2502) is electrically connected to the first metal bracket (2102), and the third metal bracket (2502) is grounded through the first metal bracket (2102).

29. A camera module (10), characterized in that: include: Lens assembly (40); The variable aperture (20) according to any one of claims 1 to 25, or the variable aperture (20) according to any one of claims 26 to 28, wherein the variable aperture (20) is arranged on the light incident side of the lens assembly (40).

30. An electronic device (01), characterized in that: include: A rear shell (03) and a camera module (10) as claimed in claim 29, wherein the camera module (10) is arranged on the rear shell (03).

Images