Camera module and electronic device

Abstract

Provided in the embodiments of the present application are a camera module and an electronic device. The camera module comprises a first lens set, a second lens set and a variable aperture assembly, wherein the variable aperture assembly comprises a base and a plurality of blades; the blades are rotatably connected to the base, and define an aperture that has an adjustable size; the first lens set is fixedly connected to the base; the aperture is located in the direction of an optical axis of the first lens set; the base and the first lens set are relatively fixed to an optical cover plate, in the electronic device, that covers an object side of the first lens set; and the second lens set is located on an image side of the first lens set and is movably arranged relative to the first lens set. The camera module of the present application can meet a requirement of people for the appearance properties of the electronic device and also meets a requirement of people for the photographing quality of the camera module.

Description

Camera modules and electronic equipment

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on April 7, 2023, with application number 202310398507.6 and application name “Camera module and electronic equipment”, the entire contents of which are incorporated by reference into this application. Technical Field

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

[0003] In recent years, people's pursuit of the experience of electronic devices such as mobile phones has become increasingly extreme, including the pursuit of the appearance and performance of electronic devices and the shooting quality of camera modules in electronic devices.

[0004] Taking a mobile phone as an example, the housing of the electronic device is equipped with an optical cover at the position corresponding to the camera module. The optical cover shields the camera module, allowing ambient light to enter the camera module's lens through the optical cover, enabling the camera module to capture the image. To meet people's pursuit of high-quality photography, camera modules are often equipped with a variable aperture assembly. The aperture of the variable aperture assembly is adjustable, allowing the aperture to be adjusted according to the intensity of the ambient light in the shooting environment, thereby achieving different shooting effects.

[0005] However, when the existing camera module realizes the shooting function, it will reduce the appearance performance of the electronic device at the optical cover, which makes it difficult to meet people's pursuit of the appearance performance of electronic devices.

[0006] Summary of the Invention

[0007] The present application provides a camera module and an electronic device, which can satisfy people's pursuit of the shooting quality of the camera module while satisfying people's pursuit of the appearance performance of the electronic device.

[0008] A first aspect of an embodiment of the present application provides a camera module for use in an electronic device. The camera module includes a first lens group, a second lens group, and a variable aperture assembly. The variable aperture assembly includes a base and multiple blades. Each blade is rotatably connected to the base and forms an aperture hole with adjustable size. The first lens group is fixed to the base, and the aperture hole is located in the optical axis direction of the first lens group. The base and the first lens group are both relatively fixed to an optical cover plate covering the object side of the first lens group in the electronic device. The second lens group is located on the image side of the first lens group and is movably arranged relative to the first lens group.

[0009] In the embodiment of the present application, by setting the variable aperture assembly in the camera module, since the size of the aperture hole surrounded by the blades in the variable aperture assembly is adjustable, the amount of light entering the lens in the camera module can be adjusted by adjusting the aperture hole, which is conducive to meeting people's pursuit of shooting quality of the camera module in the electronic device. Since the base of the variable aperture assembly and the first lens group in the camera module are relatively fixed to the optical cover plate covering the object side of the first lens group in the electronic device, the distance between the variable aperture assembly and the first lens group and the optical cover plate is always constant, so that the appearance of the electronic device at the optical cover plate is always consistent and has a good appearance effect, thereby meeting people's pursuit of the appearance performance of the electronic device and the shooting quality of the camera module. In addition, by moving the second lens group in the camera module relative to the first lens group, the anti-shake and / or autofocus functions of the camera module and the electronic device can be realized, thereby meeting people's pursuit of the appearance performance of the electronic device and the shooting quality of the camera module.

[0010] In some optional embodiments, the second lens group is arranged to move relative to the first lens group along the optical axis direction of the first lens group so that the second lens group is focused, thereby realizing the auto-focus function of the camera module;

[0011] And / or, the second lens group is arranged to move relative to the first lens group in a plane perpendicular to the optical axis direction of the first lens group, so that the second lens group provides shake compensation to achieve the anti-shake function of the camera module.

[0012] In some optional embodiments, the camera module includes a driving device, the driving device includes a driving motor, the second lens group is connected to the driving motor, and moves relative to the first lens group under the drive of the driving motor to achieve a moving setting of the second lens group relative to the first lens group, so that the second lens group can focus and / or provide shake compensation.

[0013] In some optional embodiments, the driving device also includes a driving shell having a cavity therein, the second lens group and the driving motor are both arranged in the cavity, and the driving shell has a light inlet on the side facing the first lens group, the light inlet is connected to the cavity, so that the ambient light emitted from the image side of the first lens group can pass through the light inlet and enter the second lens group, which is conducive to realizing the camera function of the camera module.

[0014] In some optional embodiments, the base is located on a side of the drive housing facing the optical cover, so as to achieve assembly and fixation of the variable aperture assembly and the first lens group on the camera module.

[0015] In some optional embodiments, the base includes a receiving space connected to the aperture, with at least a portion of the first lens group located within the receiving space and the second lens group located outside the receiving space. This allows the first lens group to be assembled within the base while ambient light from outside the electronic device enters or exits the first lens group due to the communication between the receiving space and the aperture. Furthermore, the second lens group's location outside the receiving space allows the second lens group to be moved.

[0016] In some optional embodiments, the blades are located on the object side or the image side of the first lens group, and the center of the aperture hole is located on the optical axis of the first lens group.

[0017] This makes the arrangement positions of the aperture hole and the variable aperture assembly in the camera module more diverse. At the same time, since the center of the aperture hole is located on the optical axis of the first lens group, the variable aperture assembly can better adjust the amount of light entering at least some lenses in the camera module when adjusting the size of the aperture hole.

[0018] In some optional embodiments, the variable aperture assembly further includes a rotor, which is rotatably disposed within the base and connected to each blade so that when the rotor rotates relative to the base, the blades are driven to rotate relative to the base around their own rotation axis to adjust the size of the aperture hole, thereby achieving the purpose of adjusting the aperture hole size through the rotation of the rotor.

[0019] In some optional embodiments, a mounting groove is provided in the base, and the rotor is fixed in the mounting groove and rotates relative to the base to realize the rotation setting of the rotor in the base. At the same time, since the rotor is fixed in the mounting groove, it can prevent the rotor from falling out of the mounting groove.

[0020] In some optional embodiments, the mounting groove is located on the peripheral side of the receiving space of the base, so that the rotor can be rotated in the base without affecting the accommodation of the first lens group in the base.

[0021] In some optional embodiments, the rotor has a sliding protrusion that is in sliding contact with the slot wall of the mounting slot, and the sliding protrusion is located on at least one of the circumferential side wall and the radial side wall of the rotor.

[0022] In this way, by providing the sliding protrusion, the friction area between the rotor and the base can be reduced when the rotor rotates, thereby relatively extending the service life of the rotor and the variable aperture assembly.

[0023] In some optional embodiments, the variable aperture assembly further includes at least one voice coil drive module, the voice coil drive module including a coil and a magnetic body, and the magnetic body is fixed to the circumferential side wall of the rotor;

[0024] The coil is located on the base at a position opposite to the magnetic body, and when energized, it induces mutual induction with the magnetic body to drive the rotor to rotate relative to the base.

[0025] In this way, through the interaction between the coil and the magnetic body, the rotor can be rotated in the base, so that the rotor drives the blades to rotate relative to the base, thereby adjusting the size of the aperture.

[0026] In some optional embodiments, the rotor has an assembly groove on its circumferential side wall, the magnetic body is embedded in the assembly groove, the circumferential side wall of the base has a notch at the position corresponding to the magnetic body, the coil is located in the notch, and there is a gap between the coil and the magnetic body.

[0027] The arrangement of the assembly groove enables the magnetic body to be assembled on the rotor. At the same time, the coil is located in the gap with a gap between the coil and the magnetic body, so that the coil and the magnetic body can sense each other and drive the rotor to rotate relative to the base.

[0028] In some optional embodiments, the voice coil drive module further includes a flexible circuit board provided on the base, and the coil is located on the side of the flexible circuit board facing the magnetic body, so that the flexible circuit board provides a fixed carrier for the coil on the base.

[0029] In some optional embodiments, the variable aperture assembly further includes a magnetic conductive sheet pressed onto the flexible circuit board. The magnetic conductive sheet is on the circumferential side wall of the base, located on the side of the magnetic body facing the blades. The magnetic conductive sheet is constructed to attract the magnetic body so that the rotor is suspended in the base.

[0030] By placing a magnetic sheet on the circumferential sidewall of the base, covering the side of the magnetic body facing the blades, the sheet is offset from the magnetic body along the thickness of the base. This allows the sheet to engage the magnetic body and generate an attractive force on the magnetic body. This attractive force suspends the rotor within the base, securing it within the base and preventing it from falling out of the mounting slot. It also simplifies the number of components in the variable aperture assembly, eliminating the need for a track groove between the base and rotor, resulting in a simpler structure for the variable aperture assembly. Furthermore, the pressing of the magnetic sheet enhances the stability of the flexible printed circuit board's fixation to the base.

[0031] In some optional embodiments, the attraction force of the magnetic conductive sheet on the magnetic body in the optical axis direction of the first lens group is greater than the total weight of the rotor and the magnetic body, so as to prevent the rotor from falling out of the mounting slot due to the weight of the rotor and the magnetic body.

[0032] In some optional embodiments, the magnetic body is located within the coverage range of the magnetic conductive sheet, and the geometric center of the magnetic conductive sheet is located on the side of the geometric center of the magnetic body facing the blade, so as to ensure that there is sufficient attraction between the magnetic conductive sheet and the magnetic body, while enabling the magnetic conductive sheet to be staggered with the magnetic body along the thickness direction of the base.

[0033] In some optional embodiments, the variable aperture assembly further includes a driver chip, which is located on the side of the flexible circuit board facing the rotor and is electrically connected to the voice coil driver module to control the voice coil driver module, so that the driver chip controls the voice coil driver module to drive the rotor to rotate relative to the base and adjust the size of the aperture hole.

[0034] In some optional embodiments, the driving chip includes a detection element, which is located on the side of the driving chip facing the rotor and is constructed to detect the rotational position of the rotor so that the driving chip can control the voice coil drive module to drive the rotor to rotate relative to the base based on the detection value of the detection element.

[0035] In some optional embodiments, there are at least two voice coil drive modules, which are evenly distributed along the circumference of the rotor. This arrangement of at least two voice coil drive modules not only facilitates rotation of the rotor relative to the base, but also enhances stability during rotation of the rotor relative to the base, driven by each voice coil drive module.

[0036] In some optional embodiments, the rotor slides relative to the blades when rotating relative to the base, and drives the blades to rotate relative to the base around their own rotation axis to adjust the size of the aperture hole, thereby achieving the purpose of adjusting the amount of light entering the lens in the camera module.

[0037] In some optional embodiments, the rotor is provided with a sliding portion at a position corresponding to each blade, the base is provided with an avoidance hole at a position corresponding to each sliding portion, and the blade is provided with a sliding hole at a position corresponding to the sliding portion;

[0038] The sliding portion passes through the avoidance hole and the sliding hole in sequence, and slides relative to the blade in the sliding hole when the rotor rotates relative to the base, so as to drive the blade to rotate relative to the base around its own rotation axis.

[0039] In this way, when the rotor rotates relative to the base, the sliding portion can drive the blades to rotate relative to the base around their own rotation axis, thereby adjusting the size of the aperture.

[0040] In some optional embodiments, the base is provided with a connecting post at a position corresponding to each blade, the first end of the blade is passed through the corresponding connecting post and rotates relative to the base around the connecting post, and the central axis of the connecting post forms the rotation axis of the blade;

[0041] The second ends of the blades form an aperture, and when the first ends of the blades rotate around the connecting column, the second ends of the blades rotate synchronously with the first ends of the blades to adjust the size of the aperture.

[0042] In this way, the size of the aperture can be adjusted by rotating the blades around the connecting column.

[0043] In some optional embodiments, the variable aperture assembly further includes a limiting cover plate, which is disposed on the blades and fixedly connected to the base to prevent the blades from falling out of the base when rotating relative to the base.

[0044] A second aspect of an embodiment of the present application provides an electronic device, which includes an optical cover and a camera module as described above. The optical cover is arranged on the object side of the first lens group in the camera module so that ambient light outside the electronic device can pass through the optical cover and enter the first lens group. While realizing the shooting function of the electronic device, the electronic device can have a better appearance effect at the optical cover, so as to meet people's pursuit of the appearance performance and shooting quality of electronic devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] FIG1 is a schematic structural diagram of an electronic device provided in an embodiment of the present application;

[0046] FIG2 is a schematic diagram of a partial disassembly of an electronic device provided in an embodiment of the present application;

[0047] FIG3 is a schematic diagram of partial assembly of the optical cover plate on the back cover of the electronic device in FIG2 ;

[0048] FIG4 is a schematic structural diagram of an electronic device provided in the related art at a camera module;

[0049] FIG5 is a schematic structural diagram of a camera module of an electronic device provided in an embodiment of the present application;

[0050] FIG6 is a schematic diagram of the interior of a camera module provided in an embodiment of the present application;

[0051] FIG7 is an exploded view of the camera module at the driving device in FIG6 ;

[0052] FIG8 is a schematic diagram of the external structure of a camera module provided in an embodiment of the present application;

[0053] FIG9 is an internal schematic diagram of another camera module provided in an embodiment of the present application;

[0054] FIG10 is an exploded view of the camera module in FIG8 ;

[0055] FIG11 is a structural view of the aperture of the variable aperture assembly in FIG8 at a first aperture;

[0056] FIG12 is a structural view of the aperture of the variable aperture assembly in FIG8 at a second aperture;

[0057] FIG13 is a schematic diagram of an assembly process of a rotor on a base provided in an embodiment of the present application;

[0058] FIG14 is a first internal schematic diagram of a variable aperture assembly provided in an embodiment of the present application;

[0059] FIG15 is an exploded view of a variable aperture assembly provided in an embodiment of the present application;

[0060] FIG16 is a schematic structural diagram of a variable aperture assembly provided in the related art;

[0061] FIG17 is a schematic diagram of the assembly of a rotor in a base provided by an embodiment of the present application;

[0062] FIG18 is an enlarged view of the variable aperture assembly at portion A in FIG14 ;

[0063] FIG19 is a schematic structural diagram of a rotor provided in an embodiment of the present application;

[0064] FIG20 is a second internal schematic diagram of a variable aperture assembly provided in an embodiment of the present application.

[0065] Explanation of Reference Numerals: 100 - electronic device; 1 - housing; 11 - middle frame; 111 - frame; 112 - middle plate; 12 - back cover; 2 - display screen; 3 - circuit board; 4 - camera module; 40 - lens; 41 - first lens group; 42 - second lens group; 43 - variable aperture assembly; 431 - base; 4311 - receiving space; 4312 - connecting column; 4313 - tank body; 4314 - partition; 4315 - mounting groove; 4316 - avoidance hole; 4317 - notch; 4318 - positioning protrusion; 432 - rotor; 4321 - sliding portion; 4322 - assembly groove; 4323 - sliding protrusion; 433 - blade; 4331 - first end; 4332 - second end; 4333 - arc-shaped notch; 4334 - through hole; 4335 - sliding hole; 434 - aperture hole; 435 - limit cover; 4351 - opening; 436 - voice coil drive module; 4361 - coil; 4362 - magnetic body; 4363 - magnet; 4364 - flexible circuit board; 437 - magnetic conductive sheet; 438 - drive chip; 44 - drive device; 441 - drive motor; 4411 - drive assembly; 4412 - drive coil; 4413 - drive magnet; 4414 - carrier; 442 - drive housing; 4421 - base; 4422 - fixing frame; 4423 - cover; 4424 - light inlet; 4425 - light outlet; 45 - image sensor; 46 - drive circuit board; 47 - ball bearing; 5-optical cover; 51-camera hole area; 52-non-camera hole area. DETAILED DESCRIPTION

[0066] The terms used in the implementation section of this application are only used to explain the specific embodiments of this application and are not intended to limit this application.

[0067] To facilitate understanding, the relevant technical terms involved in the embodiments of this application are first explained and illustrated.

[0068] The optical axis refers to the straight line passing through the centers of each lens in the lens. The lenses are stacked to form the lens.

[0069] The object side is the side where the object is located, divided by the lens groups in the lens.

[0070] The image side is the side where the image of the object is located, with the lens groups in the lens as the boundary.

[0071] An embodiment of the present application provides an electronic device, which may include but is not limited to a mobile phone, a tablet computer (i.e., a pad), a virtual reality (VR) device, a laptop computer, a personal computer (PC), an ultra-mobile personal computer (UMPC), a handheld computer, a smart wearable device, and other electronic devices with a shooting function.

[0072] FIG1 shows a schematic structural diagram of an electronic device 100 , and FIG2 shows a schematic partial disassembly diagram of the electronic device 100 .

[0073] Referring to Figures 1 and 2, the electronic device 100 provided in an embodiment of the present application may include a shell 1, the shell 1 includes a middle frame 11 and a back cover 12, wherein the back cover 12 is connected to one side of the middle frame 11 and provides a structural frame for the electronic device 100 together with the middle frame 11.

[0074] 2 , in some embodiments, the middle frame 11 includes a middle plate 112 and a frame 111 that are interconnected. The frame 111 is disposed around the peripheral edge of the middle plate 112 and together with the middle plate 112 constitutes the middle frame 11. The frame 111 is a square ring structure formed by connecting multiple frames 111 end to end. With reference to FIG2 , in some embodiments, when the electronic device 100 has a display function (for example, the electronic device 100 is a mobile phone), the electronic device 100 further includes a display screen 2, which is mounted on a side of the middle frame 11 opposite to the back cover 12 to realize the display function of the electronic device 100.

[0075] It should be noted that Figures 1 and 2 illustrate a middle frame 11. In some embodiments, the number of middle frames 11 can be two. The two middle frames 11 can be rotatably connected and equipped with a foldable display screen 2, so that the electronic device 100 can be folded and flattened through the relative rotation of the two middle frames 11. While meeting people's demand for a large display area of ​​the electronic device 100, it can also be convenient for users to carry.

[0076] The structure of the electronic device 100 of the present application is further described below by taking a middle frame 11 as an example.

[0077] The display screen 2 can be enclosed together with the middle frame 11 and the back cover 12 to form a housing space (not shown in the figure) for the electronic device 100. The housing space can be used to accommodate components of the electronic device 100, such as the circuit board 3, camera module 4a, battery, microphone, speaker, and receiver.

[0078] The circuit board 3 can be understood as the mainboard of the electronic device 100 (e.g., a mobile phone). The circuit board 3 typically carries electronic components such as a processor module, various controller modules, a storage module, a communication module, a radio frequency module, and a power management module. The display screen 2 can be electrically connected to the circuit board 3 to enable the display screen 2 to perform display or operation functions.

[0079] The camera module 4a can be disposed on the circuit board 3 and electrically connected to the circuit board 3, so that when a user inputs a shooting command, the circuit board 3 can control the camera module 4a to shoot a target object, thereby realizing the shooting function of the electronic device 100. The camera module 4a can be electrically connected to the circuit board 3 via an electrical connector (such as a board-to-board connector).

[0080] The structure of the electronic device 100 according to the embodiment of the present application will be further described below using a mobile phone as an example.

[0081] Figure 2 shows a camera module 4a provided in the electronic device 100. It should be noted that in actual applications, the number of camera modules 4a is not limited to one, and the number of camera modules 4a may also be two or more than two. In order to enhance the shooting performance of the electronic device 100, a plurality of (such as three, four or five) camera modules 4a are usually provided in the electronic device 100. Among them, some camera modules 4a can be arranged on the side of the middle frame 11 facing the display screen 2 to form a front camera module. Other camera modules 4a can be arranged on the side of the middle frame 11 facing the back cover 12 to form a rear camera module. In this application, the specific positions of the front camera module and the rear camera module in the electronic device 100 are not further limited.

[0082] The structure of the electronic device 100 of the present application will be further described below by taking the rear camera module as an example.

[0083] The camera module 4a may include but is not limited to a variable focal length module such as an auto focus (AF) module, a fixed focus (FF) module, a wide-angle camera module, a telephoto camera module, a color camera module or a black and white camera module.

[0084] FIG3 is a schematic diagram of partial assembly of the optical cover plate 5 on the back cover 12 of the electronic device 100 in FIG2 .

[0085] As shown in Figure 3, when the camera module 4a is a rear-mounted camera module, in order to facilitate the shooting function of the camera module 4a, the back cover 12 is provided with an opening (not shown in the figure) at the position corresponding to the camera module 4a. The electronic device 100 also includes an optical cover 5. The optical cover 5 is arranged on the side of the back cover 12 away from the display screen 2 and covers the opening of the back cover 12 to cover the object side of the lens 40 in the camera module 4a. The optical cover 5 is usually a glass cover. A camera hole area 51 is provided on the optical cover 5 and at the position of the covered camera module 4a, so that light outside the electronic device 100 can pass through the camera hole area 51 and enter the lens 40, thereby realizing the shooting function of the camera module 4a. Among them, the camera hole area 51 is a light-transmitting area on the optical cover 5. The shape of the camera hole area 51 is adapted to the shape of the lens 40. Generally, in order to increase the amount of light entering the lens 40 , the shape of the camera aperture area 51 may be larger than the shape of the lens 40 .

[0086] The optical cover plate 5 may further include a non-camera aperture area 52, which is disposed around the peripheral edge of the camera aperture area 51. The non-camera aperture area 52 is a non-light-transmitting area on the optical cover plate 5. The camera module 4a may be located on the inner surface of the optical cover plate 5 and attached to the non-camera aperture area 52 of the optical cover plate 5 using a cushioning adhesive such as foam adhesive to secure the camera module 4a to the optical cover plate 5 and the rear cover 12. The inner surface of the optical cover plate 5 can be understood as the side of the optical cover plate 5 facing the camera module 4a.

[0087] FIG4 is a schematic structural diagram of an electronic device 100a at a camera module 4b provided in the related art, so as to facilitate understanding of the structure of the camera module 4b.

[0088] As shown in Figure 4, the camera module 4b includes a lens 40a and an image sensor 45a. The lens 40a is generally composed of one or more stacked lenses (such as lenses). The lens 40a can be assembled in a drive device (not shown in the figure), and the image sensor 45a is arranged on the image side of the lens 40a. The image sensor 45a is usually electrically connected to the circuit board 3. For example, the image sensor 45a can be electrically connected to the circuit board 3 through an electrical connector. For details, please refer to the relevant description of the electrical connection between the camera module 4 and the circuit board 3 above, which will not be further elaborated here.

[0089] The ambient light outside the electronic device 100a can pass through the camera hole area of ​​the optical cover (not shown in the figure) and the opening on the back cover 12a, enter the lens 40a, and after being emitted through the lens 40a, it can pass through the filter and image sensor 45a in sequence, and after being processed by the image sensor 45a, form an image, thereby realizing the shooting function of the camera module 4b.

[0090] When people use the handheld electronic device 100a to shoot a target area, it is inevitable that the device will shake. During the shaking process, the image sensor 45a may receive different light beams at the same position and superimpose them, resulting in a blurred image or reduced continuity and stability of the video image, or even making the video content unreadable.

[0091] To mitigate the effects of camera module 4b caused by body vibration during the filming process of electronic device 100a, most electronic devices 100a currently have an anti-shake function. This function improves filming quality. The anti-shake function of existing electronic devices 100a primarily utilizes optical image stabilization (OIS), also known as optical image stabilization.

[0092] The OIS optical image stabilization supported by most existing electronic devices 100 a is mainly achieved through the OIS optical image stabilization of the lens 40 a , and the OIS optical image stabilization of the lens 40 a is mainly achieved through the movable design of the lens 40 .

[0093] The lens 40a is designed to be movable in the driving device. Referring to Figure 4, the lens 40a is connected to the driving motor 441a in the driving device so that the lens 40a is driven to move by the driving motor 441a to realize the anti-shake and / or autofocus function of the camera module 4b, thereby improving the shooting quality. For example, if the body of the electronic device 100a shakes during the shooting process, the driving motor 441a can drive the lens 40a to translate or rotate in a plane perpendicular to the optical axis direction of the lens 40a to realize the anti-shake function of the camera module 4b and the electronic device 100a. For another example, during the shooting process, the driving motor 441a can also drive the lens 40a to move along the optical axis direction of the lens 40a to realize the autofocus function of the camera module 4b and the electronic device 100a.

[0094] In recent years, people have increasingly higher demands on the appearance and performance of the electronic device 100 a and the shooting quality of the camera module 4 b in the electronic device 100 a .

[0095] In order to meet people's pursuit of shooting quality, as shown in Figure 4, a variable aperture component 43a is usually provided in the camera module 4b, and the variable aperture component 43a is located on the object side of the lens 40a. The aperture hole of the variable aperture component 43a (not shown in the figure) is an adjustable design. In a shooting environment with a strong ambient light intensity, the aperture hole can be narrowed to reduce the amount of light entering the lens 40a, resulting in a deeper depth of field and a clearer picture. In a shooting environment with insufficient ambient light intensity, the aperture hole can be enlarged to increase the amount of light entering the lens 40a, resulting in less noise and a purer picture, highlighting the shallow depth of field (background blur) effect of the main body of the picture. In this way, when the user shoots the target area through the electronic device 100a, he can achieve better shooting effects, thereby satisfying people's pursuit of shooting quality of the camera module 4b in the electronic device 100a.

[0096] However, as shown in FIG4 , the conventional variable aperture assembly 43a is typically fixed to the lens 40a. When implementing at least one of the anti-shake and focus functions of the camera module 4b, the variable aperture assembly 43a moves synchronously with the lens 40a. This results in a variable distance between the variable aperture assembly 43a and the optical cover. When the variable aperture assembly 43a moves synchronously with the lens 40a, this affects and degrades the appearance of the electronic device 100a at the optical cover, making it difficult to meet the desired appearance and performance of the electronic device 100a.

[0097] In view of this, the present application provides a camera module 4, which can be applied to an electronic device 100 and realize the shooting function of the electronic device 100. Figure 5 shows a schematic structural diagram of a camera module 4 provided in an embodiment of the present application. Referring to Figure 5, the present application sets a first lens group 41 and a second lens group 42 with a movable design in the camera module 4, wherein the first lens group 41 is connected to the variable aperture assembly 43 in the camera module 4, and the distance between the variable aperture assembly 43 and the back cover 12 and the optical cover 5 (not shown in the figure) is relatively fixed. In this way, through the movable design of the second lens group 42, not only can the shooting quality of the camera module 4 be improved, but also the movement of the variable aperture assembly 43 in the camera module 4 can be avoided to affect the appearance performance of the electronic device 100 at the optical cover 5, thereby meeting people's pursuit of the appearance performance of the electronic device 100 and the shooting quality of the camera module 4.

[0098] The structure of the camera module 4 of the present application is further described below in conjunction with the accompanying drawings and embodiments.

[0099] FIG6 illustrates an internal schematic diagram of a camera module 4 provided in an embodiment of the present application.

[0100] As shown in Figure 6, the camera module 4 includes a first lens group 41, a second lens group 42, and a variable aperture assembly 43. The variable aperture assembly 43 includes a base 431 and a plurality of blades 433. Each blade 433 is rotatably connected to the base 431 and defines an adjustable aperture 434. The first lens group 41 is fixedly connected to the base 431 to facilitate assembly of the first lens group 41 on the base 431. The first lens group 41 can be fixedly connected to the base 431 by a snap connection, a threaded connection, or other removable means to facilitate removal of the first lens group 41.

[0101] The first lens group 41 and the second lens group 42 each include multiple lenses arranged in a stacked arrangement, and the first lens group 41 and the second lens group 42 form the lens 40 of the camera module 4. "Multiple" can be understood as meaning more than two, and the number of lenses in the first lens group 41 and the second lens group 42 can be the same or different. In some embodiments, while satisfying the desired quality of the camera module 4, the number of lenses in the first lens group 41 or the second lens group 42 can be one or two. In this application, the number and type of lenses in the first lens group 41 and the second lens group 42 are not further limited.

[0102] The aperture 434 is located along the optical axis of the first lens group 41. This allows ambient light from outside the electronic device 100 to pass through the aperture 434 and enter at least a portion of the lens of the camera module 4, thereby enabling the camera module 4 to capture images. Furthermore, the variable aperture assembly 43 can adjust the amount of light entering the lens 40 of the camera module 4 by adjusting the size of the aperture 434 according to the intensity of the ambient light, thereby helping to meet the high quality of the images captured by the camera module 4 in the electronic device 100. The optical axis of the first lens group 41 can be seen in the Z direction in FIG. 6 .

[0103] The base 431 and the first lens group 41 are both fixed relative to the optical cover plate 5 that covers the object side of the first lens group 41 in the electronic device 100. That is, during the camera module 4 shooting process, the distance between the base 431 and the first lens group 41 and the optical cover plate 5 remains constant. Because the base 431 serves as an assembly carrier for the blades 433 and other structures within the variable aperture assembly 43, the distance between the variable aperture assembly 43 and the optical cover plate 5 remains constant during the camera module 4 shooting process.

[0104] In this way, ambient light outside the electronic device 100 can pass through the optical cover 5 and enter the first lens group 41 and aperture 434, thereby enabling the camera module 4 to capture images and the variable aperture assembly 43 to adjust the amount of light entering the lens 40 of the camera module 4. Furthermore, because the distance between the variable aperture assembly 43 and the first lens group 41 and the optical cover 5 is always constant, the appearance of the electronic device 100 at the optical cover 5 remains consistent and has a good appearance, thus satisfying people's pursuit of the appearance performance of the electronic device 100 and the shooting quality of the camera module 4.

[0105] The first lens group 41 can be located in the corresponding camera aperture area 51 on the optical cover plate 5, so that external ambient light can pass through the camera aperture area 51 and enter the first lens group 41, thereby realizing the shooting function of the camera module 4. The structure of the optical cover plate 5 and its assembly on the electronic device 100 can be found in the relevant description above and will not be further described here.

[0106] As shown in FIG6 , the second lens group 42 is located on the image side of the first lens group 41 and is movable relative to the first lens group 41 so that ambient light emitted by the first lens group 41 can enter the second lens group 42. During the camera module 4 shooting process, the movement of the second lens group 42 relative to the first lens group 41 can facilitate the anti-shake and / or autofocus functions (at least one of the anti-shake function and the autofocus function) of the camera module 4 and the electronic device 100, thereby meeting people's pursuit of the appearance and performance of the electronic device 100 and the shooting quality of the camera module 4.

[0107] The base 431 defines a receiving space 4311 that communicates with the aperture 434. At least a portion of the first lens group 41 is located within the receiving space 4311. This allows the first lens group 41 to be assembled within the base 431. Because the receiving space 4311 communicates with the aperture 434, ambient light from outside the electronic device 100 can enter or exit the first lens group 41. Both ends of the receiving space 4311 along the optical axis of the first lens group 41 are open, allowing the aperture 434 to communicate with the receiving space 4311, allowing ambient light to enter or exit.

[0108] The end of the first lens group 41 away from the second lens group 42 is the top end, and the end of the first lens group 41 closer to the second lens group 42 is the bottom end. When the top end of the first lens group 41 is completely accommodated in the receiving space 4311 and the bottom end is partially accommodated in the receiving space 4311, the peripheral edge of the bottom end of the first lens group 41 can be connected to the end of the base 431 facing the second lens group 42 by snapping, threading, or other detachable means to facilitate the removal of the first lens group 41.

[0109] Alternatively, when the first lens group 41 is completely accommodated in the receiving space 4311, the peripheral side of the first lens group 41 can also be connected to the end of the base 431 facing the second lens group 42 by snap connection, thread connection, or other detachable means. In this application, the method for fixing the first lens group 41 in the base 431 is not further limited.

[0110] The second lens group 42 is located outside the receiving space 4311 so as to realize the movable setting of the second lens group 42 .

[0111] In some embodiments, the second lens group 42 can be moved relative to the first lens group 41 along the optical axis direction of the first lens group 41 to focus the second lens group 42, so that the automatic focus function of the camera module 4 and the electronic device 100 can be realized through the movement of the second lens group 42.

[0112] Alternatively, in other embodiments, the second lens group 42 can also be moved relative to the first lens group 41 in a plane perpendicular to the optical axis direction of the first lens group 41, so that the second lens group 42 provides shake compensation, so that the anti-shake function of the camera module 4 and the electronic device 100 can be achieved through the movement of the second lens group 42.

[0113] Alternatively, in some embodiments, the second lens group 42 can not only be moved relative to the first lens group 41 along the optical axis direction of the first lens group 41, but can also be moved relative to the first lens group 41 in a plane perpendicular to the optical axis direction of the first lens group 41, so that the camera module 4 and the electronic device 100 have both autofocus function and anti-shake function.

[0114] In order to realize the movement of the second lens group 42, as shown in Figure 6, the camera module 4 also includes a driving device 44, the driving device 44 includes a driving motor 441, the second lens group 42 is connected to the driving motor 441, and moves relative to the first lens group 41 under the drive of the driving motor 441 to realize the movement setting of the second lens group 42 relative to the first lens group 41, so that the second lens group 42 can focus and / or provide shake compensation, thereby realizing the anti-shake function and autofocus function of the camera module 4 and the electronic device 100.

[0115] As shown in FIG6 , the drive device 44 may further include a drive housing 442 having a cavity (not shown) therein, in which the second lens group 42 and the drive motor 441 are disposed, so as to enable the second lens group 42 and the drive motor 441 to be assembled in the drive housing 442 and the camera module 4. The drive housing 442 has a light inlet 4424 on the side facing the first lens group 41, and the light inlet 4424 is connected to the cavity so that ambient light emitted from the image side of the first lens group 41 can pass through the light inlet 4424 and enter the second lens group 42, thereby facilitating the camera function of the camera module 4.

[0116] FIG7 illustrates an exploded view of the camera module 4 at the driving device 44 in FIG6 , so as to understand the arrangement of the second lens group 42 in the driving device 44 .

[0117] As shown in FIG7 , the drive housing 442 may include a base 4421, a fixed frame 4422, and a cover 4423. The fixed frame 4422 is mounted on the base 4421 and forms a cavity with the base 4421 for accommodating the second lens group 42 and the drive motor 441, thereby facilitating the assembly of the drive assembly 4411 within the drive housing 442. The cover 4423 is mounted on the circumferential outer side of the base 4421 and the fixed frame 4422 and is pressed against the fixed frame 4422 and the carrier 4414. A light inlet 4424 is located on the side of the cover 4423 facing the first lens group 41 to allow ambient light to enter the second lens group 42. A light outlet 4425 is provided on the base 4421 facing the image side of the second lens group 42 to allow ambient light to exit from the image side of the second lens group 42.

[0118] 7 in conjunction with FIG6 , the drive motor 441 may include a drive assembly 4411 and a carrier 4414. The carrier 4414 may be connected to the lens 40 so as to drive the second lens group 42 to move synchronously via the carrier 4414. For example, the second lens group 42 may be located within a mounting hole of the lens 40 within the carrier 4414 and connected to the carrier 4414 by means of a snap connection, a threaded connection, or an adhesive connection.

[0119] The driving assembly 4411 can be located on the circumferential side of the carrier 4414 and between the carrier 4414 and the cover 4423. If the body of the electronic device 100 shakes during shooting, the driving assembly 4411 can drive the carrier 4414 to translate or rotate in a plane perpendicular to the optical axis of the first lens group 41, so as to drive the second lens group 42 to translate or rotate synchronously in a plane perpendicular to the optical axis of the first lens group 41 through the carrier 4414, thereby compensating for the shaking of the body of the electronic device 100 and realizing the anti-shake function of the camera module 4 and the electronic device 100.

[0120] During the shooting process, the driving component 4411 can also drive the carrier 4414 to move along the optical axis direction of the first lens group 41, so as to drive the second lens group 42 to move synchronously along the optical axis direction of the first lens group 41 through the carrier 4414, so as to realize the autofocus function of the camera module 4 and the electronic device 100.

[0121] 7 , in some embodiments, the driving assembly 4411 may be a voice coil driving structure, which may include a driving coil 4412 and a driving magnet 4413, wherein the driving magnet 4413 is typically a magnet 4363. The driving coil 4412 may be disposed on the circumference of the carrier 4414, and the driving magnet 4413 may be disposed on the inner wall of the cover 4423 and disposed opposite the driving coil 4412, so that when the driving coil 4412 is energized, it can sense the driving magnet 4413 and generate an electromagnetic force, thereby driving the carrier 4414 through the electromagnetic force to move along the optical axis of the first lens group 41 or in a plane perpendicular to the optical axis of the lens 40 (e.g., translation or rotation), thereby achieving the anti-shake function and the autofocus function of the camera module 4 and the electronic device 100.

[0122] Alternatively, in other embodiments, the driving coil 4412 can also be arranged on the inner wall of the cover body 4423, and the driving magnet 4413 can also be arranged on the peripheral side of the carrier 4414. Through the mutual induction between the driving coil 4412 and the driving magnet 4413, the carrier 4414 can also be driven to move along the optical axis direction of the first lens group 41 or move in a plane perpendicular to the optical axis direction of the lens 40, thereby realizing the anti-shake function and autofocus function of the camera module 4 and the electronic device 100.

[0123] Alternatively, in some embodiments, the drive assembly 4411 may be a conventional shape memory alloy drive assembly, so as to achieve a movable design of the second lens group 42 through the shape memory alloy drive assembly. The structure of the shape memory alloy drive assembly and its driving principle for the second lens group 42 can be found in the relevant descriptions of the prior art and will not be further elaborated here.

[0124] 7 in conjunction with FIG6 , to enhance the stability of the carrier 4414 during movement, the number of drive assemblies 4411 may be two, and the two drive assemblies 4411 may be symmetrically arranged around the circumference of the carrier 4414. Alternatively, in some embodiments, the number of drive assemblies 4411 may be multiple, and the multiple drive assemblies 4411 may be evenly distributed around the circumference of the carrier 4414.

[0125] FIG8 shows a schematic diagram of the external structure of a camera module 4 .

[0126] As shown in Figures 7 and 8, the camera module 4 also includes a photosensitive component (not shown), which may include a filter and an image sensor 45. The image sensor 45 may be electrically connected to the circuit board 3 of the electronic device 100 via an electrical connector. The assembly of the image sensor 45 on the drive device 44 is shown in Figure 8. The filter and image sensor 45 are sequentially arranged on the image side of the second lens group 42 along the optical axis of the second lens group 42. This allows ambient light emitted from the second lens group 42 to pass through the filter and image sensor 45 in sequence, and ultimately be processed by the image sensor 45 to form an image, thereby realizing the capture function of the camera module 4.

[0127] To electrically connect the camera module 4 to the circuit board 3, the camera module 4 may further include a driver circuit board 46. The image sensor 45 may be electrically connected to the circuit board 3 of the electronic device 100 via the driver circuit board 46, thereby enabling signal transmission between the image sensor 45 in the camera module 4 and the circuit board 3. The driver circuit board 46 may be electrically connected to the circuit board 3 via an electrical connector (e.g., a board-to-board electrical connector).

[0128] As shown in FIG. 8 , the base 431 is located on the side of the drive housing 442 facing the optical cover 5 , so as to achieve assembly and fixation of the variable aperture assembly 43 and the first lens group 41 on the camera module 4 .

[0129] 8 , in some embodiments, blades 433 may be located on the object side of first lens group 41, such that aperture 434 is located on the object side of first lens group 41, thereby adjusting the amount of light entering each lens in first lens group 41 and second lens group 42. In this case, each blade 433 may be located on a side of base 431 away from second lens group 42.

[0130] FIG9 is an internal schematic diagram of another camera module 4 provided in an embodiment of the present application.

[0131] As shown in Figure 9, in other embodiments, the blades 433 can also be located on the image side of the first lens group 41, so that the aperture 434 is located on the image side of the first lens group 41 to adjust the amount of light entering each lens in the second lens group 42. In this case, each blade 433 can be located on the side of the base 431 near the second lens group 42. In this application, the position of the aperture 434 relative to the first lens group 41 is not further limited. This allows for more diverse placement of the aperture 434 and the variable aperture assembly 43 within the camera module 4.

[0132] Regardless of whether the aperture hole 434 can be located on the object side or the image side of the first lens group 41, the center of the aperture hole 434 is located on the optical axis of the first lens group 41. In this way, the center of the aperture hole 434 can be aligned with the center of each lens in the first lens group 41, so that when the variable aperture assembly 43 adjusts the size of the aperture hole 434, it can better adjust the amount of light entering at least some of the lenses in the camera module 4 to meet people's pursuit of shooting quality of the camera module 4.

[0133] The structure of the camera module 4 of the present application is further described below by taking the example of the aperture hole 434 being located on the object side of the first lens group 41 .

[0134] FIG10 illustrates an exploded view of the camera module 4 in FIG8 , so as to better understand the structure of the camera module 4 . In this figure, the aperture hole 434 is located on the object side of the first lens group 41 .

[0135] 10 , six blades 433 are shown. In some embodiments, the number of blades 433 may be eight, ten, etc. In this application, there is no further limitation on the number of blades 433. Each blade 433 is rotatably connected to the base 431 and forms an aperture 434.

[0136] The base 431 is provided with connecting posts 4312 at positions corresponding to the blades 433. In other words, the number of connecting posts 4312 corresponds to the number of blades 433. The first ends 4331 of the blades 433 are inserted through the corresponding connecting posts 4312 and rotate relative to the base 431 around the connecting posts 4312, thereby forming an axial fit between the blades 433 and the base 431. The central axis of the connecting posts 4312 forms the rotation axis of the blades 433. The connection between the first ends 4331 of the blades 433 and the connecting posts 4312 enables the blades 433 to be rotatably connected to the base 431.

[0137] A through hole 4334 is defined on the first end 4331 of the blade 433 . The connecting post 4312 can pass through the through hole 4334 and has a clearance fit with the through hole 4334 , so that the blade 433 can rotate around the connecting post 4312 .

[0138] FIG11 illustrates a structural view of the aperture hole 434 of the variable aperture assembly 43 in FIG8 at a first aperture. In the first aperture, the aperture hole 434 has a larger aperture. FIG12 illustrates a structural view of the aperture hole 434 of the variable aperture assembly 43 in FIG8 at a second aperture. In the second aperture, the aperture hole 434 has a smaller aperture.

[0139] 11 and 12 , the second ends 4332 of the blades 433 form an aperture 434 and rotate synchronously with the first ends 4331 of the blades 433 when the first ends 4331 of the blades 433 rotate around the connecting post 4312 to adjust the size of the aperture 434. The purpose of adjusting the size of the aperture 434 is achieved by rotating the blades 433 around the connecting post 4312.

[0140] For example, when the first end 4331 of each blade 433 rotates relative to the base 431 about the connecting post 4312 in the W1 direction, the second end 4332 of each blade 433 will also rotate relative to the base 431 in the W1 direction, adjusting the aperture 434 from the first aperture shown in FIG. 11 to the second aperture, thereby reducing the aperture 434's diameter. For another example, when the first end 4331 of each blade 433 rotates relative to the base 431 about the connecting post 4312 in the W2 direction, the second end 4332 of each blade 433 will also rotate relative to the base 431 in the W2 direction, thereby adjusting the aperture 434 from the second aperture shown in FIG. 11 to the first aperture, thereby increasing the aperture 434's diameter. The W2 direction is opposite to the W1 direction. Therefore, by changing the rotational direction of the blades 433, the aperture 434's diameter can be increased or decreased.

[0141] It should be noted that the aperture hole 434 does not only refer to a traditional circular hole. In addition to the circular hole, the aperture hole 434 may also include a non-circular hole as shown in FIG. 12 .

[0142] As shown in Figures 11 and 12, the base 431 is provided with a groove body 4313 on the end face perpendicular to the optical axis direction of the first lens group 41, the connecting column 4312 is located at the bottom of the groove body 4313, and the blade 433 is embedded in the groove body 4313 to achieve the rotational connection of the blade 433 on the base 431. At the same time, the rotation angle of the blade 433 relative to the base 431 can be limited by the groove body 4313 to avoid excessive rotation of the blade 433.

[0143] Furthermore, by embedding the blades 433 in the groove 4313 , the thickness of the variable aperture assembly 43 and the camera module 4 can be reduced, thereby saving the assembly space of the camera module 4 in the housing 1 and contributing to the reduction in weight and thickness of the electronic device 100 .

[0144] The plurality of blades 433 are evenly distributed on the base 431 along the circumference of the first lens group 41 and are all located in a plane perpendicular to the optical axis direction of the first lens group 41 , so that a closed aperture 434 is formed on the base 431 by the plurality of blades 433 .

[0145] The second ends 4332 of the blades 433 may have arcuate notches 4333 that match the circumferential sidewalls of the first lens group 41. The center of the arcuate notches 4333 is located on the optical axis of the first lens group 41. The second ends 4332 of two adjacent blades 433 along the circumference of the first lens group 41 may be alternately stacked together along the optical axis of the first lens group 41. When the plurality of blades 433 are evenly distributed on the base 431 along the circumference of the first lens group 41, the second ends 4332 of the blades 433 together form a closed aperture 434 at the arcuate notches 4333.

[0146] In some embodiments, the variable aperture assembly 43 further includes a limiting cover 435, which can be covered on the blade 433 (as shown in FIG10 ) and fixedly connected to the base 431 so as to limit the movement of the blade 433 along the optical axis of the first lens group 41 through the limiting cover 435 to prevent the blade 433 from falling off the base 431 when rotating relative to the base 431.

[0147] Among them, the limiting cover 435 can be provided with an opening 4351 at the position corresponding to the aperture hole 434, and the aperture of the opening 4351 can be larger than the maximum aperture of the aperture hole 434, so that the ambient light outside the electronic device 100 can enter the aperture hole 434 through the opening 4351, while achieving the purpose of the variable aperture assembly 43 adjusting the amount of incoming light.

[0148] As shown in Figure 10, the variable aperture assembly 43 includes a rotor 432, which is rotatably set in the base 431 and connected to each blade 433. When it rotates relative to the base 431, it drives the blade 433 to rotate around its own rotation axis (the rotation axis of the blade 433) relative to the base 431 to adjust the size of the aperture hole 434. Therefore, under the drive of the rotor 432, the size of the aperture hole 434 can be adjusted by rotating the blade 433 around its own rotation axis relative to the base 431, so as to meet people's pursuit of shooting quality of the camera module 4.

[0149] Figure 13 shows a schematic diagram of the assembly process of the rotor 432 on the base 431. The structure fixed to the base 431 and the rotor 432 is omitted in the figure to simplify the structure of the figure. Figure 14 shows a schematic diagram of the interior of the variable aperture assembly 43.

[0150] 13 and 14 , a mounting slot 4315 is provided in the base 431, and the rotor 432 is fixed in the mounting slot 4315 and rotates relative to the base 431. In other words, the rotor 432 is dynamically fixed in the mounting slot 4315 so that when the rotor 432 rotates relative to the base 431, it can drive the blades 433 to rotate relative to the base 431 about the connecting post 4312, thereby achieving the purpose of adjusting the size of the aperture 434. At the same time, the rotor 432 can also be fixed in the base 431 to prevent the rotor 432 from dislodging from the notch of the mounting slot 4315 and detaching from the base 431, thereby enhancing the stability of the connection between the rotor 432 and the blades 433 and making the shooting quality of the camera module 4 more stable.

[0151] The mounting groove 4315 is located on the circumference of the receiving space 4311 of the base, so as to achieve the rotation of the rotor 432 in the base 431 without affecting the accommodation of the first lens group 41 in the base 431 .

[0152] To facilitate connection between rotor 432 and blade 433, mounting groove 4315 can be provided in the end of base 431 facing blade 433. Base 431 has an assembly cavity (not shown) with both ends open. A partition 4314 is provided on the cavity wall of the assembly cavity facing blade 433. Partition 4314 is disposed around the open end of base 431 to divide the assembly cavity into a receiving space 4311 and mounting groove 4315.

[0153] To facilitate the secure connection between the first lens group 41 and the base 431, the height of the partition 4314 can be less than the depth of the assembly cavity, so that the mounting groove 4315 communicates with the receiving space 4311, allowing the end of the first lens group 41 to extend to one side of the mounting groove 4315 and securely connect to the end of the base 431. The height of the partition 4314 and the depth of the assembly cavity are both parallel to the optical axis of the first lens group 41, specifically see the Z direction in Figure 6.

[0154] As shown in FIG14 , the variable aperture assembly 43 further includes at least one voice coil drive module 436. The voice coil drive module 436 includes a coil 4361 and a magnetic body 4362. The magnetic body 4362 is fixedly attached to the circumferential sidewall of the rotor 432 to ensure that the magnetic body 4362 is fixedly assembled on the rotor 432. For example, the magnetic body 4362 can be fixedly attached to the circumferential sidewall of the rotor 432 by bonding, clamping, or other means.

[0155] The coil 4361 is located on the base 431 at a position opposite to the magnetic body 4362, and when powered on, it senses the magnetic body 4362 to drive the rotor 432 to rotate relative to the base 431. Through the interaction between the coil 4361 and the magnetic body 4362, the rotation setting of the rotor 432 in the base 431 can be realized, so that the rotor 432 can be dynamically fixed in the base 431, and at the same time, the rotor 432 can drive the blade 433 to rotate around the connecting column 4312 relative to the base 431, thereby adjusting the size of the aperture hole 434.

[0156] When coil 4361 is located on base 431 opposite magnetic body 4362, the orthographic projection of coil 4361 on magnetic body 4362 overlaps with magnetic body 4362. Consequently, when coil 4361 is energized, the magnetic field generated by magnetic body 4362 causes mutual induction between coil 4361 and magnetic body 4362, generating an electromagnetic force tangential to the circumference of rotor 432. This electromagnetic force drives rotor 432 to rotate relative to base 431. It should be noted that by varying the strength and polarity of the current in coil 4361, the magnitude and direction of the electromagnetic force can be altered, thereby changing the direction of rotation of rotor 432 on base 431. This allows rotor 432 to drive blades 433 to rotate, thereby widening or narrowing aperture 434.

[0157] FIG. 15 is an exploded view of a variable aperture assembly 43 provided in an embodiment of the present application, so as to facilitate understanding of the structure of the variable aperture assembly 43 .

[0158] As shown in FIG. 15 , magnetic body 4362 is generally a magnet 4363. The number of magnets 4363 in magnetic body 4362 can be one or two. When magnetic body 4362 includes two magnets 4363, the magnetization directions of the two magnets 4363 are opposite, that is, the north and south poles of the two magnets 4363 are arranged in opposite directions. This allows coil 4361 to induce mutual induction with the two magnets 4363 when energized, driving rotor 432 to rotate relative to base 431. In this application, the number of magnets 4363 in magnetic body 4362 and their magnetization directions are not further limited.

[0159] When the rotor 432 rotates relative to the base 431, it slides relative to the blade 433 and drives the blade 433 to rotate around its own rotation axis (the central axis of the connecting column 4312) relative to the base 431 to adjust the size of the aperture hole 434, thereby achieving the purpose of adjusting the amount of light entering at least part of the lens 40 in the camera module 4.

[0160] As shown in FIG15 , the rotor 432 is provided with a sliding portion 4321 at a position corresponding to each blade 433. The sliding portion 4321 may be a columnar structure or a protrusion on the rotor 432. In this application, the structure of the sliding portion 4321 is not further defined. The base 431 is provided with a clearance hole 4316 at a position corresponding to each sliding portion 4321, and the blade 433 is provided with a sliding hole 4335 at a position corresponding to the sliding portion 4321. The sliding portion 4321 passes through the clearance hole 4316 and the sliding hole 4335 in sequence. As the rotor 432 rotates relative to the base 431, the sliding portion 4321 slides relative to the blade 433 within the sliding hole 4335, thereby driving the blade 433 to rotate about its own rotation axis (the central axis of the connecting column 4312) relative to the base 431. The rotation of the blade 433 thereby adjusts the size of the aperture 434.

[0161] As shown in FIG15 , the sliding hole 4335 may be a bar-shaped hole with an end extending toward the aperture 434. This allows the sliding portion 4321 to slide within the sliding hole 4335 along the direction of the end of the sliding hole 4335 when the rotor 432 rotates relative to the base 431, pushing the blade 433 to rotate relative to the base 431 about the connecting post 4312, thereby adjusting the size of the aperture 434. The bar-shaped hole extending along the length of the sliding hole 4335 may include, but is not limited to, an oblong hole as shown in FIG15 . The sliding hole 4335 may be located on the side of the through-hole 4334 of the blade 433 that faces the aperture 434. The sliding portion 4321 is inserted into the sliding hole 4335 and has a clearance fit therewith, facilitating movement of the sliding portion 4321 within the sliding hole 4335.

[0162] In some embodiments, the sliding hole 4335 may also be an arc-shaped hole with its end extending toward one side of the aperture hole 434. In the present application, the shape of the sliding hole 4335 is not further limited.

[0163] The structure of the camera module 4 of the present application is further explained below by taking the strip-shaped hole as an example.

[0164] As shown in FIG15 , the avoidance hole 4316 is an arcuate hole disposed along the rotational trajectory of the sliding portion 4321. The length of the arcuate hole is greater than the outer diameter of the sliding portion 4321. This allows the sliding portion 4321 to move with the rotor 432 within the avoidance hole 4316 when the rotor 432 rotates relative to the base 431, thereby driving the blade 433 to rotate about the central axis of the connecting post 4312, thereby adjusting the size of the aperture 434. The avoidance hole 4316 is connected to the mounting slot 4315 on the base 431, so that when the rotor 432 is within the mounting slot 4315, the sliding portion 4321 can pass through the avoidance hole 4316 and into the sliding hole 4335.

[0165] The adjustment process of the aperture hole 434 is further described below in combination with different application scenarios.

[0166] When shooting in an environment with strong ambient light, the voice coil drive module 436 can be used to control the rotor 432 to rotate relative to the base 431 along the V1 direction in FIG. 11 around the central axis of the rotor 432. During the rotation of the rotor 432, the sliding portion 4321 will also rotate along the V1 direction within the avoidance hole 4316 with the rotor 432. During the rotation, the sliding portion 4321 will slide along the sliding hole 4335, contacting and pushing the first end 4331 of the blade 433 to rotate relative to the base 431 along the W1 direction around the central axis of the connecting post 4312. As the first end 4331 of the blade 433 rotates relative to the base 431 about the central axis of the connecting post 4312, the second end 4332 of the blade 433 will also rotate relative to the base 431 along the W1 direction. After the rotor 432 rotates to a preset angle, the second end 4332 of the blade 433 will also stop rotating, and the aperture hole 434 will be adjusted from the first aperture shown in FIG11 to the second aperture shown in FIG12 to reduce the aperture of the aperture hole 434 so as to reduce the amount of light entering the lens 40 in the camera module 4, resulting in a deeper depth of field and a clearer picture, thereby obtaining better shooting quality.

[0167] Similarly, when shooting in an environment with low or insufficient ambient light intensity, the voice coil drive module 436 can control the rotor 432 to rotate relative to the base 431 in the direction V2 shown in FIG12 about its central axis. During the rotation of the rotor 432, the sliding portion 4321 drives the blades 433 provided therein to rotate relative to the base 431 in the direction W2. The direction V2 is opposite to the direction V1. After the rotor 432 rotates to a predetermined angle, the aperture 434 is adjusted from the second aperture shown in FIG12 to the first aperture shown in FIG11, thereby increasing the aperture of the aperture 434 and thereby increasing the amount of light entering the lens 40 in the camera module 4. This results in less noise and a cleaner image, highlighting the shallow depth of field (background blur) effect of the main subject of the image, and achieving better image quality.

[0168] As shown in Figure 15, the rotor 432 has an assembly groove 4322 on the circumferential side wall, and the magnetic body 4362 is embedded in the assembly groove 4322, so that the magnetic body 4362 can be fixed to the rotor 432 in the assembly groove 4322 by bonding, clamping or other means, while also reducing the radial length of the variable aperture assembly 43 in the rotor 432, which is conducive to the miniaturization of the variable aperture assembly 43 and the camera module 4.

[0169] The shape of the assembly groove 4322 is the same as that of the magnetic body 4362 , so that when the magnetic body 4362 is embedded in the assembly groove 4322 , the assembly groove 4322 can limit the installation of the magnetic body 4362 on the rotor 432 .

[0170] The circumferential sidewall of the base 431 has a notch 4317 at a position corresponding to the magnetic body 4362. The coil 4361 is located within the notch 4317, with a gap between it and the magnetic body 4362. The notch 4317 allows the coil 4361 and the magnetic body 4362 to be positioned relative to each other, thereby inducing mutual induction between the coil 4361 and the magnetic body 4362 to drive the rotor 432 to rotate relative to the base 431. Furthermore, the notch 4317 can also limit the installation of the coil 4361 on the base 431.

[0171] The shape of the notch 4317 is the same as the outer edge contour of the coil 4361, so that the coil 4361 can be accommodated in the notch 4317. While limiting the coil 4361 through the notch 4317, the size of the notch 4317 can be reduced to avoid the notch 4317 being too large and affecting the structural strength of the base 431.

[0172] FIG16 is a schematic structural diagram of a variable aperture assembly 43 a provided in the related art, wherein the figure only illustrates the fixing of the rotor 432 a of the variable aperture assembly 43 a on the base 431 a.

[0173] As shown in FIG16 , the variable aperture assembly 43a in related art typically includes multiple balls 47. Strip grooves (not shown) are provided on the circumference of the rotor 432a and the inner wall of the base 431a facing each other. A track groove (not shown) is formed between the two strip grooves, which allows the balls 47 to roll. The multiple balls 47 are embedded in the track groove to connect and secure the rotor 432a within the base 431a. Alternatively, in related art, the rotor 432a can be secured to the base 431a using spring clips. This complicates the assembly of the rotor 432a within the base 431a, complicating the structure of the variable aperture assembly 43a and increasing the manufacturing cost of the variable aperture assembly 43a.

[0174] FIG17 shows a schematic diagram of assembling a rotor 432 in a base 431 .

[0175] To this end, the embodiment of the present application improves the fixation of the variable aperture assembly 43 in the base 431. As shown in Figure 17, the present application fixes the rotor 432 in the base 431 through the attractive force between the magnetic conductive sheet 437 in the variable aperture assembly 43 and the magnetic body 4362 on the rotor 432, so as to achieve the fixation of the rotor 432 in the base 431 without affecting the rotation of the rotor 432 in the base 431, and at the same time, enable the variable aperture assembly 43 to have the characteristics of simple structure.

[0176] FIG. 18 is an enlarged view of the variable aperture assembly 43 at portion A in FIG. 14 .

[0177] 18 and 17 , the voice coil drive module 436 further includes a flexible circuit board 4364 disposed on the base 431 , and the coil 4361 is located on the side of the flexible circuit board 4364 facing the magnetic body 4362 , so that the flexible circuit board 4364 provides a fixed carrier for the coil 4361 on the base 431 .

[0178] The variable aperture assembly 43 also includes a magnetic sheet 437 pressed onto the flexible circuit board 4364. The magnetic sheet 437 is located on the circumferential sidewall of the base 431, on the side of the magnetic body 4362 facing the blades 433. The magnetic sheet 437 is configured to attract the magnetic body 4362, thereby suspending the rotor 432 within the base 431. The magnetic sheet 437 may include, but is not limited to, a sheet-like structure made of a magnetically conductive material (such as iron, silicon, etc.). This allows the magnetic sheet 437 to be offset from the magnetic body 4362 along the optical axis of the first lens group 41. The optical axis of the first lens group 41 can be seen in the Z direction in FIG. 18 .

[0179] After the magnetic sheet 437 and the magnetic body 4362 are attracted to each other, the magnetic sheet 437 generates an attractive force F1 on the magnetic body 4362 in the direction of the optical axis of the first lens group 41, as well as an attractive force F2 in the radial direction of the rotor 432. The combined attractive forces F1 and F2 cause the magnetic sheet 437 to generate an upward, oblique attractive force F on the magnetic body 4362. This attractive force F can also be referred to as the pulling force exerted by the magnetic sheet 437 on the magnetic body 4362.

[0180] Since the magnetic sheet 437 is fixed on the base 431 and the magnetic body 4362 is fixed to the rotor 432, the rotor 432 can be kept fixed under the oblique force under the action of the magnetic sheet 437 through the attraction force F, so that the magnetic body 4362 and the rotor 432 are suspended in the base 431 by the attraction force F, so that the rotor 432 is fixed in the base 431 to prevent the rotor 432 from escaping from the mounting groove 4315. At the same time, the number of structural parts in the variable aperture assembly 43 can be simplified (for example, the number of balls 47 is reduced), and the setting of the track groove between the base 431 and the rotor 432 is avoided, so that the variable aperture assembly 43 has the characteristics of simple structure, thereby making the assembly of the variable aperture assembly 43 easier and having lower manufacturing costs.

[0181] Typically, the rotation angle of the rotor 432 relative to the base 431 is relatively small (e.g., 2 or 3 degrees). This does not significantly affect the relative position of the magnetic sheet 437 and the magnetic body 4362 during the rotor 432's rotation relative to the base 431. Therefore, when the magnetic body 4362 rotates with the rotor 432 relative to the base 431, it does not affect the attractive force F exerted by the magnetic sheet 437 on the rotor 432. In other words, during the rotor 432's rotation, the magnetic sheet 437 can still secure the rotor 432 within the base 431, preventing the rotor 432 from falling out of the mounting slot 4315.

[0182] The attraction force F1 of the magnetic conductive sheet 437 on the magnetic body 4362 in the optical axis direction of the first lens group 41 is greater than the total weight of the rotor 432 and the magnetic body 4362 to prevent the rotor 432 from escaping from the mounting slot 4315 due to the weight of the rotor 432 and the magnetic body 4362.

[0183] It should be noted that in order to achieve force balance of the rotor 432, in some embodiments, the number of voice coil drive modules 436 can be at least two, and at least two voice coil drive modules 436 are evenly distributed along the circumference of the rotor 432. This not only facilitates the rotation of the rotor 432 relative to the base 431, but also, under the drive of each voice coil drive module 436, can enhance the stability of the rotor 432 when rotating relative to the base 431.

[0184] FIG15 takes two voice coil drive modules 436 as an example to illustrate the distribution of the voice coil drive modules 436 along the circumference of the rotor 432. When the number of voice coil drive modules 436 is greater than two, the voice coil drive modules 436 can be evenly distributed along the circumference of the rotor 432 in the manner shown in FIG15 .

[0185] The number of magnetic conductive sheets 437 in the camera module 4 is equal to and corresponds to the number of magnetic bodies 4362. This allows the magnetic conductive sheets 437 to stably secure the rotor 432 within the base 431, ensuring that the rotor 432 can always rotate about its own rotation axis relative to the base 431. The rotation axis of the rotor 432 can be collinear with the optical axis of the first lens group 41.

[0186] At this time, the sum of the attractive forces F1 of each magnetic conductive sheet 437 on the magnetic body 4362 in the optical axis direction of the first lens group 41 is greater than the total weight of the rotor 432 and the magnetic body 4362, so as to prevent the rotor 432 from escaping from the mounting slot 4315 due to the weight of the rotor 432 and the magnetic body 4362.

[0187] The magnetic body 4362 is located within the coverage range of the magnetic conductive sheet 437, and the geometric center of the magnetic conductive sheet 437 is located on the side of the geometric center of the magnetic body 4362 toward the blade 433, so as to ensure that there is sufficient attraction between the magnetic conductive sheet 437 and the magnetic body 4362, while enabling the geometric center of the magnetic conductive sheet 437 to be offset relative to the side of the magnetic body 4362 toward the blade 433, so as to realize the staggered setting of the magnetic conductive sheet 437 and the magnetic body 4362 along the thickness direction of the base 431.

[0188] The flexible circuit board 4364 and the magnetic conductive sheet 437 may be fixed to the base 431 by bonding, riveting, or other connection methods. Taking bonding as an example, the base 431 may be provided with at least two positioning protrusions 4318 (as shown in FIG. 15 ) around the notch 4317. The flexible circuit board 4364 and the magnetic conductive sheet 437 may each be provided with through holes (not shown) at positions corresponding to the positioning protrusions 4318 for the positioning protrusions 4318 to pass through. This allows the positioning protrusions 4318 to sequentially pass through the through holes in the flexible circuit board 4364 and the magnetic conductive sheet 437, thereby limiting the installation position of the flexible circuit board 4364 and the magnetic conductive sheet 437 on the base 431. In addition, the flexible circuit board 4364 can be bonded to the base 431, and the magnetic conductive sheet 437 can be bonded to the flexible circuit board 4364, so that the flexible circuit board 4364 and the magnetic conductive sheet 437 can be fixed on the base 431 while being pressed onto the flexible circuit board 4364 through the magnetic conductive sheet 437.

[0189] As shown in Figure 18, the camera module 4 also includes a driving chip 438. The driving chip 438 is located on the side of the flexible circuit board 4364 facing the rotor 432 and is electrically connected to the voice coil driving module 436 to control the voice coil driving module 436, so that the voice coil driving module 436 is controlled by the driving chip 438 to drive the rotor 432 to rotate relative to the base 431, thereby adjusting the size of the aperture hole 434.

[0190] Specifically, the driver chip 438 and the coil 4361 can both be fixed to a flexible circuit board 4364, so that the driver chip 438 can be electrically connected to the coil 4361 via the flexible circuit board 4364, thereby electrically connecting the driver chip 438 to the voice coil driver module 436. Furthermore, the flexible circuit board 4364 can be electrically connected to the driver circuit board 46 in the photosensitive assembly, so that the driver circuit board 46 can transmit control signals to the driver chip 438, thereby enabling the driver chip 438 to control the voice coil driver module 436.

[0191] In some embodiments, the driving chip 438 may also include a detection element (not shown in the figure), which is located on the side of the driving chip 438 facing the rotor 432 and is constructed to detect the rotation position of the rotor 432, so that the driving chip 438 can control the voice coil driving module 436 to drive the rotor 432 to rotate relative to the base 431 based on the detection value of the detection element.

[0192] When there are at least two voice coil driving modules 436 , there are correspondingly at least two flexible circuit boards 4364 . In this case, the driving chip 438 can be located on a side of one of the flexible circuit boards 4364 facing the magnetic body 4362 .

[0193] The detection element may be a Hall element or other element capable of detecting the rotational position of the rotor 432. Taking the Hall element as an example, the Hall element can detect the rotation angle of the rotor 432 relative to the base 431 by sensing the change in the magnetic field of the adjacent magnetic element.

[0194] Among them, the driver chip 438 can be located in the enclosed space of the coil 4361 (not marked in the figure), so that the detection element can better detect the changes in the magnetic field, while also being able to reasonably utilize the space occupied by the coil 4361 on the flexible circuit board 4364 to realize the assembly of the driver chip 438 in the variable aperture assembly 43.

[0195] FIG19 shows a schematic structural diagram of a rotor 432 , and FIG20 shows a second schematic internal diagram of a variable aperture assembly 43 .

[0196] As shown in Figures 19 and 20 , rotor 432 has sliding protrusions 4323 that slide in contact with the walls of mounting slot 4315. Sliding protrusions 4323 are located on at least one of the circumferential sidewall or radial sidewall of rotor 432. As rotor 432 rotates relative to base 431, sliding protrusions 4323 slide within mounting slot 4315 and contact the walls of mounting slot 4315. This reduces the friction area between rotor 432 and base 431 during rotation, thereby relatively extending the service life of rotor 432 and variable aperture assembly 43.

[0197] As shown in Figure 19, the sliding protrusion 4323 can be set on the circumferential side wall and radial side wall of the rotor 432 at the same time, so as to further reduce the friction area between the rotor 432 and the base 431 when the rotor 432 rotates compared to the setting of the sliding protrusion 4323 on the circumferential side wall or radial side wall of the rotor 432.

[0198] It should be noted that the sliding protrusion 4323 may include but is not limited to a circular protrusion or a block-shaped protrusion on the base 431. In this application, the shape of the sliding protrusion 4323 is not further limited.

[0199] The electronic device 100 of the present application may include any of the camera modules 4 described above. As described above, the electronic device 100 may further include an optical cover plate 5, which may be disposed on the object side of the first lens group 41 in the camera module 4 so that ambient light outside the electronic device 100 can pass through the optical cover plate 5 and enter the first lens group 41. This enables the electronic device 100 to have a better appearance at the optical cover plate 5 while realizing the shooting function of the electronic device 100, thereby satisfying people's pursuit of the appearance performance and shooting quality of the electronic device 100.

[0200] It should be noted that the camera module 4 can replace the camera module 4a mentioned above and be applied in the electronic device 100. Similarly, the camera module 4 may include but is not limited to a variable focal length module such as an auto focus (AF) module, a fixed focus (FF) module, a wide-angle camera module, a telephoto camera module, a color camera module or a black and white camera module. For the assembly of the camera module 4 in the electronic device 100, please refer to the relevant description of the camera module 4a above, which will not be further described here. For the assembly of the optical cover 5 in the electronic device 100, please refer to the relevant description above, which will not be further described here.

[0201] In the description of the embodiments of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to a fixed connection, an indirect connection via an intermediate medium, internal communication between two components, or an interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on specific circumstances.

[0202] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the embodiments of this application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

Claims

1. A camera module, applied to electronic equipment, characterized in that: The invention comprises a first lens group, a second lens group and a variable aperture assembly, wherein the variable aperture assembly comprises a base and a plurality of blades, each of the blades being rotatably connected to the base and surrounding an aperture hole of adjustable size, the first lens group being fixedly connected to the base, and the aperture hole being located in the optical axis direction of the first lens group; the base and the first lens group are both relatively fixed to an optical cover plate covering the object side of the first lens group in the electronic device; the second lens group is located on the image side of the first lens group and is movably arranged relative to the first lens group.

2. The camera module according to claim 1, characterized in that: The second lens group is arranged to move relative to the first lens group along the optical axis direction of the first lens group so that the second lens group can be focused; And / or, the second lens group is movably arranged relative to the first lens group in a plane perpendicular to the optical axis direction of the first lens group, so that the second lens group provides jitter compensation.

3. The camera module according to claim 1 or 2, characterized in that: It comprises a driving device, which comprises a driving motor. The second lens group is connected to the driving motor and moves relative to the first lens group under the drive of the driving motor, so that the second lens group can focus and / or provide jitter compensation.

4. The camera module according to claim 3, characterized in that: The driving device also includes a driving shell having a cavity therein, the second lens group and the driving motor are both arranged in the cavity, and the driving shell has a light inlet on a side facing the first lens group, and the light inlet is connected to the cavity.

5. The camera module according to claim 4, characterized in that: The base is located on a side of the driving housing facing the optical cover.

6. The camera module according to claim 1, characterized in that: The base has a receiving space in communication with the aperture hole, at least a portion of the first lens group is located in the receiving space, and the second lens group is located outside the receiving space.

7. The camera module according to claim 1, characterized in that: The blades are located on the object side or the image side of the first lens group, and the center of the aperture hole is located on the optical axis of the first lens group.

8. The camera module according to any one of claims 1 to 7, characterized in that: The variable aperture assembly also includes a rotor, which is rotatably disposed in the base and connected to each of the blades. When the rotor rotates relative to the base, it drives the blades to rotate relative to the base around their own rotation axis to adjust the size of the aperture hole.

9. The camera module according to claim 8, characterized in that: The base is provided with a mounting groove, and the rotor is fixed in the mounting groove and rotates relative to the base.

10. The camera module according to claim 9, characterized in that: The mounting groove is located on the peripheral side of the receiving space of the base.

11. The camera module according to claim 9, characterized in that: The rotor is provided with a sliding protrusion which is in sliding contact with the groove wall of the installation groove, and the sliding protrusion is located on at least one of the circumferential side wall and the radial side wall of the rotor.

12. The camera module according to claim 8, characterized in that: The variable aperture assembly further comprises at least one voice coil drive module, wherein the voice coil drive module comprises a coil and a magnetic body, and the magnetic body is fixedly connected to the circumferential side wall of the rotor; The coil is located at a position on the base opposite to the magnetic body, and senses the magnetic body when powered on, so as to drive the rotor to rotate relative to the base.

13. The camera module according to claim 12, characterized in that: The circumferential side wall of the rotor is provided with an assembly groove, the magnetic body is embedded in the assembly groove, the circumferential side wall of the base is provided with a notch at a position corresponding to the magnetic body, the coil is located in the notch and has a gap between the coil and the magnetic body.

14. The camera module according to claim 12, characterized in that: The voice coil driving module further includes a flexible circuit board arranged on the base, and the coil is located on a side of the flexible circuit board facing the magnetic body.

15. The camera module according to claim 14, characterized in that: The variable aperture assembly also includes a magnetic conductive sheet pressed onto the flexible circuit board, the magnetic conductive sheet is on the circumferential side wall of the base and is located on the side of the magnetic body facing the blades, and the magnetic conductive sheet is constructed to attract the magnetic body so that the rotor is suspended in the base.

16. The camera module according to claim 15, characterized in that: The attraction force of the magnetic conductive sheet on the magnetic body in the optical axis direction of the first lens group is greater than the total weight of the rotor and the magnetic body.

17. The camera module according to claim 15, characterized in that: The magnetic body is located within the coverage of the magnetic conductive sheet, and the geometric center of the magnetic conductive sheet is located on a side of the geometric center of the magnetic body facing the blade.

18. The camera module according to claim 14, characterized in that: The variable aperture assembly further includes a driving chip, which is located on a side of the flexible circuit board facing the rotor and is electrically connected to the voice coil driving module to control the voice coil driving module.

19. The camera module according to claim 18, characterized in that: The driving chip includes a detection element, which is located on a side of the driving chip facing the rotor and is configured to detect a rotation position of the rotor.

20. The camera module according to claim 12, characterized in that: The number of the voice coil drive modules is at least two, and the at least two voice coil drive modules are evenly distributed along the circumference of the rotor.

21. The camera module according to any one of claims 8 to 20, characterized in that: The rotor slides relative to the blades when rotating relative to the base, and drives the blades to rotate relative to the base around their own rotation axis, so as to adjust the size of the aperture hole.

22. The camera module according to claim 21, characterized in that: The rotor is provided with a sliding part at a position corresponding to each of the blades, the base is provided with an avoidance hole at a position corresponding to each of the sliding parts, and the blade is provided with a sliding hole at a position corresponding to the sliding part; The sliding portion passes through the avoidance hole and the sliding hole in sequence, and slides in the sliding hole relative to the blade when the rotor rotates relative to the base, so as to drive the blade to rotate relative to the base around its own rotation axis.

23. The camera module according to any one of claims 1 to 22, characterized in that: The base is provided with a connecting column at a position corresponding to each of the blades, the first end of the blade is passed through the corresponding connecting column and rotates relative to the base around the connecting column, and the central axis of the connecting column forms the rotation axis of the blade; The second end of each blade forms an aperture hole, and when the first end of the blade rotates around the connecting column, the second end rotates synchronously with the first end of the blade to adjust the size of the aperture hole.

24. The camera module according to any one of claims 1 to 22, characterized in that: The variable aperture assembly further comprises a limiting cover plate, which is disposed on the blades and is fixedly connected to the base.

25. An electronic device, characterized in that: It comprises an optical cover plate and a camera module as described in any one of claims 1 to 24, wherein the optical cover plate covers the object side of a first lens group in the camera module.

Images