Variable aperture device, camera module and electronic device

Abstract

A variable aperture device (32), a camera module (30), and an electronic device (100), which relate to the technical field of photography. The variable aperture device (32) comprises: a seat (1), a carrier (2), a plurality of aperture blades (4), and a shutter blade (5), wherein when the carrier (2) rotates relative to the seat (1), the plurality of aperture blades (4) and the shutter blade (5) slide relative to the carrier (2) and rotate relative to the seat (1); and movement positions of the plurality of aperture blades (4) comprise a first position and a second position, wherein when the aperture blades move from the first position toward the second position, a light entry opening (32a) defined by the plurality of aperture blades (4) becomes larger, and in the first position, the shutter blade (5) completely blocks the light entry opening (32a), and in the second position, the shutter blade (5) deviates from the light entry opening (32a). Global exposure is achieved by means of the cooperation of a plurality of aperture blades (4) and the shutter blade (5).

Description

Variable aperture device, camera module and electronic equipment

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on June 30, 2023, with application number 202310802495.9 and invention name “Variable aperture device, camera module and electronic device”, the entire contents of which are incorporated by reference into this application. Technical Field

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

[0003] The shutter is a mechanism used by camera equipment to control the exposure time of the film. Exposure modes include rolling shutter and total shutter.

[0004] In existing electronic devices, such as mobile phones, an electronic shutter is used to implement rolling shutter exposure. Rolling shutter exposure is performed by scanning line by line until all pixels are exposed.

[0005] However, if the subject is moving or vibrating rapidly relative to the camera, using an electronic shutter with rolling exposure may result in "tilt," "wobble," or "partial exposure" if the line-by-line scanning speed is insufficient. This phenomenon is known as the "jello effect" when shooting with a rolling shutter.

[0006] In addition, indoor lighting, preview and recording are prone to produce a time domain aliasing phenomenon caused by the power frequency 50Hz, 60Hz and rolling shutter exposure mechanism, resulting in stripe flicker (banding) phenomenon.

[0007] In contrast, global exposure utilizes the simultaneous exposure of all pixels to compensate for issues such as the jello effect and streaking. For example, mechanical shutters capable of global exposure are often integrated into camera equipment. However, these technologies can significantly increase the size and cost of the equipment.

[0008] Summary of the Invention

[0009] This application provides a variable aperture device, a camera module having the variable aperture device, and an electronic device including the camera module. The primary purpose is to integrate a mechanical shutter capable of controlling global exposure into the variable aperture device structure, thereby preventing the introduction of the mechanical shutter from significantly increasing the device size and cost.

[0010] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions:

[0011] On the one hand, the present application provides a variable aperture device. For example, the variable aperture device can be used in electronic devices with photo and video recording functions.

[0012] The variable aperture device includes a base and a carrier, as well as multiple aperture blades and at least one shutter blade. The carrier is rotatably connected to the base, and the multiple aperture blades are arranged around the circumference of the carrier to form a light inlet. The multiple aperture blades and the at least one shutter blade are all rotatably connected to the base, and the multiple aperture blades and the at least one shutter blade are all slidably connected to the carrier; when the carrier rotates relative to the base, the multiple aperture blades and the at least one shutter blade slide relative to the carrier and rotate relative to the base, and the multiple aperture blades rotate relative to the base and slide relative to the carrier to adjust the size of the light inlet; the movement positions of the multiple aperture blades include a first position and a second position, and when moving from the first position to the second position, the light inlet surrounded by the multiple aperture blades becomes larger; in the first position, the at least one shutter blade completely blocks the light inlet, and in the second position, the at least one shutter blade deviates from the light inlet. Alternatively, multiple aperture blades may move from the second position to the first position, and the light well formed by the multiple aperture blades becomes smaller; in the second position, the at least one shutter blade deviates from the light well, so that the light well can receive external light; in the first position, the at least one shutter blade blocks the light well, so that the light well cannot receive external light.

[0013] The variable aperture device provided in the present application not only includes multiple aperture blades that can adjust the size of the light entrance hole, but also includes shutter blades that can move with the aperture blades; when the aperture blades and the shutter blades move, and as the light entrance hole becomes larger at a certain stage, for example, when the above-mentioned multiple aperture blades move to the first position, the shutter blades can block the light entrance hole, and in the second position, the shutter blades blocking the light entrance hole can deviate from the light entrance hole, so that the light entrance hole is exposed and not blocked. In this way, the shutter blades move from the first position to the second position to achieve global exposure, and the shutter blades can be called a mechanical shutter capable of achieving global exposure.

[0014] This application integrates a mechanical shutter that achieves global exposure into a variable aperture device structure that can adjust the aperture size, and uses the coordination of multiple aperture blades and shutter blades to achieve global exposure. The variable aperture device involved in this application not only maintains the aperture variable function, but also can be used as a mechanical shutter to control global exposure. In this way, this application solution does not significantly increase the size and cost of the device due to the addition of shutter blades that can control global exposure.

[0015] In a possible implementation, the first position is a position where a plurality of aperture blades form a minimum light entrance hole.

[0016] In a possible implementation, the second position includes a position where a plurality of aperture blades form a maximum light entrance hole.

[0017] In this example, as the multiple aperture blades adjust the aperture from maximum to minimum, the shutter blades deviate from the aperture and do not block it, thus not affecting the continuously variable aperture function. Only when the aperture is at its minimum light intake do the shutter blades block it. Although this example integrates the mechanical shutter for global exposure control with the variable aperture mechanism, their respective functions are independent and do not affect each other.

[0018] In one possible implementation, at least one shutter blade includes a first shutter blade having a first side and a second side; multiple aperture blades include a first aperture blade having a third side and a fourth side; when the multiple aperture blades move to the second position, the first side is closer to the center of the light entrance hole than the second side, and the third side is closer to the center of the light entrance hole than the fourth side; the movement positions of the multiple aperture blades also include a third position located between the first position and the second position, when the multiple aperture blades move from the first position to the third position, the first side and the third side intersect, and when the multiple aperture blades move from the first position to the third position, the movement speed of the first shutter blade is greater than the movement speed of the first aperture blade.

[0019] It can be considered that when the edge of the shutter blade intersects the edge of the aperture blade, the movement speed of the shutter blade is greater than the movement speed of the aperture blade, so as to quickly block the light hole or quickly open the light hole.

[0020] In one possible implementation, the variable aperture device further includes a driving device, which is connected to the base and the carrier, and is used to drive the carrier to rotate relative to the base to drive the multiple aperture blades and the at least one shutter blade to move.

[0021] By using the same driving device, the aperture blades and shutter blades can be started and stopped synchronously. On the basis of realizing the variable aperture device and global exposure, the present application adopts a driving device and does not need to design a separate driving structure for driving the movement of the shutter blades. In this way, the present application can simplify the structure and realize the miniaturization and thinness of the equipment.

[0022] In a possible implementation, the driving device includes a coil and a magnet, one of the coil and the magnet is disposed on the carrier, and the other is disposed on the base.

[0023] In one example, the coil is disposed on the base and the magnet is disposed on the carrier; or, in another example, the magnet is disposed on the carrier and the coil is disposed on the base.

[0024] In one possible implementation, the at least one shutter blade includes: a first shutter blade and a second shutter blade; the first shutter blade includes a first contact surface, and the second shutter blade includes a second contact surface; when the multiple aperture blades move from the second position toward the first position, the first contact surface and the second contact surface approach each other, and in the first position, the first contact surface and the first contact surface are in contact, so that the first shutter blade and the second shutter blade block the light entrance.

[0025] This implementation structure includes not only a first shutter blade but also a second shutter blade. When in the first position, the aperture is blocked by the first shutter blade and the second shutter blade that cooperate with each other.

[0026] In one possible implementation, the at least one shutter blade includes: a first shutter blade and a second shutter blade; the first shutter blade and the second shutter blade are arranged sequentially along a direction consistent with the axial direction of the light entrance hole; when the multiple aperture blades move to the first position, the positive projection of the first shutter blade on the second shutter blade overlaps with at least part of the second shutter blade.

[0027] The light entrance hole is blocked by the overlapping portion of the first shutter blade and the second shutter blade.

[0028] In a possible implementation, in addition to the first shutter blade and the second shutter blade, more shutter blades are included, and the shutter blades are arranged around the circumference of the carrier.

[0029] In one possible implementation, the multiple aperture blades include a first group of aperture blades and a second group of aperture blades, and the first group of aperture blades and the second group of aperture blades each include multiple aperture blades; the first group of aperture blades and the second group of aperture blades are stacked along a direction consistent with the axial direction of the light entrance hole. During the movement of the multiple aperture blades, there is a gap between every two adjacent aperture blades in the first group of aperture blades, and the aperture blades in the second group of aperture blades opposite to the gap block the gap.

[0030] In this example, the rotation and sliding of the stacked first and second groups of aperture blades are used to surround the light entrance hole; and during the movement of the first and second groups of aperture blades, the aperture blades in the second group of aperture blades will cover the gap. In this way, during the aperture adjustment process, no gap will appear between the aperture blades, allowing light to enter through the gap and affect the performance of the camera module.

[0031] In one possible implementation, the aperture hole surrounded by multiple aperture blades has a light entrance side and a light exit side, and the first group of aperture blades is closer to the light entrance side than the second group of aperture blades; at least one shutter blade is arranged between the first group of aperture blades and the second group of aperture blades; or, at least one shutter blade is arranged on the side of the first group of aperture blades close to the light entrance side; or, at least one shutter blade is arranged on the side of the second group of aperture blades close to the light exit side.

[0032] The above gives three different setting positions of the shutter blades. One is to be set between the first group of aperture blades and the second group of aperture blades, which can be understood as a center setting. Another is to be set close to the light input side, that is, a top setting. Another is to be set close to the light output side, that is, a bottom setting.

[0033] In one possible implementation, the at least one shutter blade is rotatably connected to the base body through a hinge structure; each hinge structure includes a first rotating hole, and a rotating shaft rotatably arranged in the first rotating hole, and the axial direction of the rotating shaft is consistent with the axial direction of the light entrance hole; the first rotating hole is opened on the at least one shutter blade, and the rotating shaft is arranged on the base body.

[0034] The shutter blade is connected to the base body in rotation by utilizing the rotating shaft and the rotating hole matched with the rotating shaft. The structure is simple and easy to implement.

[0035] In one possible implementation, multiple aperture blades include a first aperture blade, a second rotating hole is opened on the first aperture blade, at least one shutter blade includes a first shutter blade, a first rotating hole is opened on the first shutter blade, the first rotating hole and the second rotating hole are connected to each other, and the rotating shaft passes through the first rotating hole and the second rotating hole, so that the first shutter blade and the first aperture blade are both rotatably connected to the seat body.

[0036] That is, the first shutter blade and the first aperture blade share the same rotating shaft, which can simplify the structure and the assembly process.

[0037] In one possible implementation, the first shutter blade has a first edge away from the rotation axis, and the first aperture blade has a second edge away from the rotation axis; in the first position, the first edge is farther away from the rotation axis than the second edge.

[0038] Thus, when in the first position, the first shutter blade covers the aperture.

[0039] In one possible implementation, the at least one shutter blade is slidably connected to the carrier through a sliding structure; each sliding structure includes a first guide groove, and a sliding column slidingly arranged in the first guide groove; the first guide groove is opened on the at least one shutter blade, and the sliding column is arranged on the carrier.

[0040] The sliding post and the guide groove matched with the sliding post are used to realize the rotation connection between the aperture blades and the seat body, which has a simple structure and is easy to realize.

[0041] In one possible implementation, multiple aperture blades include a first aperture blade, a second guide groove is provided on the first aperture blade, at least one shutter blade includes a first shutter blade, a first guide groove is provided on the first shutter blade, and a sliding column passes through the first guide groove and the second guide groove, so that the first shutter blade and the first aperture blade are both slidably connected to the carrier.

[0042] That is, the first shutter blade and the first aperture blade can share the same slide post.

[0043] In a possible implementation manner, an orthographic projection of the first guide groove on the first aperture blade overlaps at least partially with that of the second guide groove.

[0044] On the other hand, the present application also provides a camera module, which includes a lens and a variable aperture device in any of the above implementation methods, and the lens is arranged on the light-emitting side of the aperture hole of the variable aperture device.

[0045] The camera module provided in the embodiment of the present application includes the variable aperture device involved above. In the variable aperture device, it not only includes multiple aperture blades that can form a light entrance hole, but also includes shutter blades. The shutter blades and the aperture blades are integrated into a variable aperture device, realizing the continuous variable aperture function and the full exposure function.

[0046] On the other hand, the present application also provides an electronic device, including a controller and a camera module in any of the above implementation methods, wherein the controller is electrically connected to the camera module.

[0047] The electronic device provided in the embodiment of the present application includes the above-mentioned camera module. Therefore, the electronic device provided in the embodiment of the present application and the camera module of the above-mentioned technical solution can solve the same technical problems and achieve the same expected effects.

[0048] In yet another aspect, the present application further provides a method for controlling a variable aperture device, wherein the variable aperture device includes a plurality of aperture blades and a shutter blade;

[0049] Control methods include:

[0050] receiving a first instruction;

[0051] According to a first instruction, controlling the plurality of aperture blades and the shutter blade to move to a first position;

[0052] Controlling the plurality of aperture blades and the shutter blade to move from the first position to the second position;

[0053] Wherein, in the first position, the shutter blades completely block the light entrance hole surrounded by the multiple aperture blades; in the second position, the shutter blades deviate from the light entrance hole surrounded by the multiple aperture blades.

[0054] In the control method of the variable aperture device provided in the present application, the movement of multiple aperture blades and shutter blades is controlled, and global exposure is achieved by utilizing the coordination of the multiple aperture blades and shutter blades.

[0055] In one possible implementation, the control method further includes:

[0056] receiving a second instruction;

[0057] According to the second instruction, the plurality of aperture blades and the shutter blade are controlled to move to a target position between the first position and the second position. At the target position, the plurality of aperture blades form a target aperture hole, and the shutter blade deviates from the target aperture hole.

[0058] This control method reflects that the aperture value can be controlled, and when the aperture value is adjusted, the shutter blade is deviated from the aperture hole, so that the shutter blade does not affect the continuously variable aperture function. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] FIG1 is a perspective view of an electronic device provided in some embodiments of the present application;

[0060] FIG2 is an exploded view of the electronic device shown in FIG1 ;

[0061] FIG3 is a perspective view of a camera module provided in some embodiments of the present application;

[0062] FIG4 is an exploded view of the camera module shown in FIG3 ;

[0063] FIG5 is a perspective view of a variable aperture device provided in an embodiment of the present application;

[0064] FIG6 is an exploded view of a variable aperture device provided in an embodiment of the present application;

[0065] FIG7 is an exploded view of a variable aperture device provided in an embodiment of the present application;

[0066] FIG8 is an exploded view of a variable aperture device provided in an embodiment of the present application;

[0067] FIG9 is a perspective view of a base body in a variable aperture device provided in an embodiment of the present application;

[0068] FIG10 is a perspective view of a driving device, a carrier, and a base in a variable aperture device provided in an embodiment of the present application;

[0069] FIG11 is a structural diagram of a driving device in a variable aperture device provided in an embodiment of the present application;

[0070] FIG12A is an exploded view of a variable aperture device provided in an embodiment of the present application;

[0071] FIG12B is a structural diagram of multiple aperture blades provided in an embodiment of the present application;

[0072] 13A, 13B, 13C, 13D, and 13E are structural diagrams of multiple aperture blades and shutter blades moving to different positions according to an embodiment of the present application;

[0073] 14A and 14B are structural diagrams of multiple aperture blades and shutter blades moving to different positions according to an embodiment of the present application;

[0074] FIG15 is an exploded view of a variable aperture device provided in an embodiment of the present application;

[0075] 16A, 16B, 16C, 16D, and 16E are structural diagrams of multiple aperture blades and shutter blades moving to different positions according to an embodiment of the present application;

[0076] FIG17 is an exploded view of a variable aperture device provided in an embodiment of the present application;

[0077] 18A, 18B, 18C, 18D, and 18E are structural diagrams of multiple aperture blades and shutter blades moving to different positions according to an embodiment of the present application;

[0078] FIG19 is a top view of shutter blades and aperture blades in a variable aperture device provided in an embodiment of the present application;

[0079] FIG20 is an exploded view of a variable aperture device provided in an embodiment of the present application;

[0080] 21A, 21B, 21C, 21D, and 21E are structural diagrams of multiple aperture blades and shutter blades moving to different positions according to an embodiment of the present application;

[0081] FIG22 is an exploded view of a variable aperture device provided in an embodiment of the present application;

[0082] 23A, 23B, 23C, 23D, and 23E are structural diagrams of multiple aperture blades and shutter blades moving to different positions according to an embodiment of the present application;

[0083] FIG24 is an exploded view of a variable aperture device provided in an embodiment of the present application;

[0084] 25A, 25B, 25C, 25D, and 25E are structural diagrams of multiple aperture blades and shutter blades moving to different positions according to an embodiment of the present application;

[0085] FIG26 is a top view of a variable aperture device provided in an embodiment of the present application;

[0086] FIG27 is a perspective view of a partial structure of a variable aperture device provided in an embodiment of the present application;

[0087] FIG28 is an exploded view of a portion of the structure of a variable aperture device provided in an embodiment of the present application;

[0088] 29A, 29B, and 29C are structural diagrams of aperture blades and shutter blades according to an embodiment of the present application;

[0089] FIG30 is an internal circuit diagram of an electronic device according to an example of the present application;

[0090] FIG31 is a perspective view of a partial structure of a variable aperture device provided in an embodiment of the present application;

[0091] FIG32 is a three-dimensional diagram of a carrier in a variable aperture device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0092] An embodiment of the present application provides an electronic device having a camera function. Specifically, the electronic device may be a portable electronic device or other suitable electronic device. For example, the electronic device may be a mobile phone, a tablet personal computer, a laptop computer, a personal digital assistant (PDA), a camera, a personal computer, a notebook computer, an in-vehicle device, a wearable device, augmented reality (AR) glasses, an AR helmet, virtual reality (VR) glasses, or a VR helmet.

[0093] Please refer to Figures 1 and 2. Figure 1 is a perspective view of an electronic device provided in some embodiments of the present application, and Figure 2 is an exploded view of the electronic device shown in Figure 1. In this embodiment, the electronic device is a mobile phone. The electronic device includes a housing 10, a camera decorative cover 20, a camera module 30, and a mainboard 40.

[0094] The housing 10 is a housing structure formed by splicing a front cover (not shown in the figure), a frame 11 and a back cover 12, and is used to protect the internal electronic devices and circuits of the electronic device.

[0095] The back cover 12 defines a mounting opening 50, which is covered by a decorative camera cover 20. The decorative camera cover 20 is used to protect the camera module of the electronic device. In some embodiments, the decorative camera cover 20 protrudes from the exterior of the housing 10. This allows for increased mounting space for the camera module within the electronic device along the thickness direction (i.e., direction Z) of the electronic device.

[0096] At least one light-transmitting window 21 is provided on the camera decorative cover 20 , and the at least one light-transmitting window 21 is used to allow scene light to enter the rear camera module.

[0097] The camera module 30 is disposed in the housing 10 and is used to take photos and videos.

[0098] The camera module 30 integrates a variable aperture (VA) device and a drive motor. The VA device is used to adjust the amount of light entering the camera. The drive motor is used to achieve automatic focusing (AF) and / or optical image stabilization (OIS).

[0099] 3 and 4 , FIG3 is a perspective view of the camera module 30 within the electronic device 100 shown in FIG1 and FIG2 , and FIG4 is an exploded view of the camera module 30 shown in FIG3 . In this embodiment, the camera module 30 includes an optical lens 31 , a variable aperture device 32 , a drive motor 33 , and a photosensitive structure 34 .

[0100] The optical lens 31 is used to image the scene being photographed and may include a light incident surface and a light exit surface. The light incident surface is the surface of the optical lens 31 facing the scene being photographed when in use. Scene light enters the optical lens 31 through this light incident surface. The light exit surface of the optical lens 31 is the surface of the optical lens 31 facing away from the scene being photographed when in use. Scene light exits through this light exit surface.

[0101] The variable aperture device 32 includes a light inlet hole 32a of variable size. This light inlet hole 32a is located on the light-entering side of the optical lens 31. Scene light enters the optical lens 31 through the light inlet hole 32a. Thus, the variable aperture device 32 can adjust the amount of light entering the optical lens 31 by adjusting the size of the light inlet hole 32a.

[0102] Some electronic devices use an electronic shutter with rolling exposure for photos and videos. In some scenarios, this method no longer meets the desired shooting results. For example, when shooting fast-moving or vibrating objects, rolling exposure can produce jello effects such as tilt, wobbling, or partial exposure.

[0103] In order to overcome the above difficulties, the embodiments of the present application provide some achievable structures, and the structures can be integrated with the variable aperture structure. The specific implementation structures are shown below.

[0104] Figure 5 is a three-dimensional diagram of a variable aperture device provided in an embodiment of the present application. Figure 6 is an exploded diagram of the variable aperture device shown in Figure 5 . Figure 6 is a partial decomposition of the structure shown in Figure 5 , but not a complete decomposition. Figure 7 shows a structural diagram of the carrier and the base in the variable aperture device.

[0105] 5 and 6 , in this embodiment, the variable aperture device includes a base 1 and a carrier 2. As shown in FIG7 , the base 1 includes an outer ring structure 101 and an inner ring structure 102 . The outer ring structure 101 and the inner ring structure 102 divide the space within the base 1 into a first mounting cavity 103 and a second mounting cavity 104 , with the first mounting cavity 103 surrounding the second mounting cavity 104 .

[0106] For example, as shown in FIG7 , the carrier 2 can be rotatably disposed in the first mounting cavity 103 , and the optical lens 31 mentioned in FIG5 can be disposed in the second mounting cavity 104 .

[0107] 8 , the variable aperture device further includes a driving device 3 for driving the carrier 2 to rotate relative to the base 1. For example, the rotation axis of the carrier 2 is consistent with the optical axis of the optical lens 31 mentioned above.

[0108] The driving device 3 has a variety of possible structures. For example, it may include a coil and a magnet; for another example, it may include a piezoelectric structure made of piezoelectric material; for another example, it may include a shape memory alloy (SMA) driving structure.

[0109] Continuing to refer to FIG8 , the exemplary driving device 3 includes a coil 301 and a magnet 302 . One of the coil 301 and the magnet 302 is disposed on the base 1 , and the other is disposed on the carrier 2 .

[0110] For example, in the example of FIG8 , the magnet 302 is provided on the base 1 , and the coil 301 is provided on the carrier 2 ; for another example, in the example of FIG10 , the magnet 302 is provided on the carrier 2 , and the coil 301 is provided on the base 1 .

[0111] There are many ways to arrange the coil 301. For example, in FIG8 , an inlay groove 201 is provided on the carrier 2, and the coil 301 is arranged in the inlay groove 201.

[0112] There are also various ways to position the magnet 302. For example, as shown in Figures 8 and 9, a mounting groove 105 is provided on the base 1, and the magnet 302 is positioned within the mounting groove 105. For example, the mounting groove 105 can be provided on the outer ring structure 101 of the base 1, and the magnet 302 can be fixed within the mounting groove 105.

[0113] There needs to be electromagnetic induction between the coil 301 and the magnet 302 , so the orthographic projection of the magnet 302 on the coil 301 overlaps with at least a portion of the coil 301 .

[0114] A plurality of driving devices 3 including coils 301 and magnets 302 may be provided. As shown in FIG8 , the plurality of driving devices 3 may be arranged at intervals along the circumference of the carrier 2 to improve the stability of the carrier 2 in rotating relative to the base 1 .

[0115] To ensure the stability of electromagnetic induction between the coil 301 and the magnet 302, as shown in FIG11 , which illustrates a protective structure for protecting the drive device 3, the variable aperture device further includes a magnetic shielding structure 7, in which the magnet 301 is fixed. Returning to FIG9 , the magnetic shielding structure 7 can also be disposed within the inlay groove 105 of the base 1.

[0116] The magnetic shielding structure 7 can reduce interference from other structures on the electromagnetic induction between the coil 301 and the magnet 302. For example, when other electromagnetic components are disposed around the variable aperture device, the magnetic shielding structure 7 can be used to reduce electromagnetic interference between the electromagnetic components and the driving device 3 in the embodiment of the present application.

[0117] Referring to Figure 12A , which is an exploded view of a portion of the structure of an exemplary variable aperture device of the present application, the variable aperture device further includes a plurality of aperture blades 4 disposed circumferentially around a carrier 2 , each of which is slidably connected to the carrier 2 and rotatably connected to the base 1 .

[0118] Then, when the carrier 2 rotates relative to the base 1 under the Ampere force of the coil 301 and the magnet 302, each aperture blade 4 is driven to rotate relative to the base 1 and slide relative to the carrier 2, thereby adjusting the size of the light inlet 6 formed by the multiple aperture blades 4 as shown in FIG12B . For example, the central axis of the light inlet 6 is aligned with the optical axis of the optical lens 31.

[0119] The size of the light hole 6 involved in the embodiments of the present application can be understood as the area of ​​the light hole 6 as shown in FIG12B , or can also be understood as the aperture size of the light hole 6. For example, in FIG12B , the light hole 6 is a substantially circular structure surrounded by multiple sides, and the aperture size of the light hole 6 can be the distance D1 between two opposite sides, or the distance D2 between two opposite corners.

[0120] 12A , the variable aperture device further includes at least one shutter blade 5 , each shutter blade 5 being slidably connected to the carrier 2 and rotatably connected to the base 1 . FIG12A shows one shutter blade 5 as an example.

[0121] Thus, when the carrier 2 rotates relative to the base 1 under the Ampere force of the coil 301 and the magnet 302 , the plurality of aperture blades 4 and the shutter blades 5 are driven to slide relative to the carrier 2 and rotate relative to the base 1 .

[0122] 13A , 13B, 13C, 13D, and 13E illustrate structures of the plurality of aperture blades 4 and the shutter blade 5 when they move to different positions.

[0123] From Figures 13A to 13E , the multiple aperture blades 4 move along the P direction, gradually reducing the diameter of the enclosed light inlet 6. Furthermore, in Figures 13A , 13B , 13C , and 13D , the end of the shutter blade 5 deviates from the light inlet 6 formed by the multiple aperture blades 4 , meaning that the end of the shutter blade 5 does not block the light inlet 6. However, in Figure 13E , the end of the shutter blade 5 has moved to the position of the light inlet 6, completely blocking it.

[0124] On the contrary, when the multiple aperture blades 4 and the shutter blades 5 move from Figure 13E toward Figure 13A, in Figure 13E, the end of the shutter blade 5 completely blocks the light entrance 6. As the multiple aperture blades 4 and the shutter blade 5 continue to move, the shutter blade 5 blocking the light entrance 6 will deviate from the light entrance 6, exposing the light entrance 6 to collect light.

[0125] In the state shown in FIG13E where the shutter blade 5 completely blocks the light hole 6, global exposure can be achieved by switching to a state where the shutter blade 5 does not block the light hole 6.

[0126] Based on the above-described structure, in this application example, full exposure is achieved by the coordination of shutter blade 5 and multiple aperture blades 4. For example, when this structure is used to capture high-speed motion or rapid vibration, all pixels of the photosensitive device are exposed simultaneously, which can reduce the "tilt", "wobble" or "partial exposure" of the shooting structure, thereby improving the shooting effect and enhancing the user experience.

[0127] Furthermore, the variable aperture device of the present application maintains the aperture adjustment function without affecting the aperture's continuous variable function. Compared to some existing technologies, the present application integrates shutter blades, which function as a mechanical shutter, into the variable aperture structure, utilizing the mechanical shutter and multiple aperture blades to achieve global exposure. This avoids excessively increasing the size of the camera device or manufacturing costs due to the introduction of a mechanical shutter.

[0128] In addition, the above description describes how the multiple aperture blades 4 and shutter blades 5 are driven by the same drive device 3 to achieve movement. For example, the multiple aperture blades 4 and shutter blades 5 start and stop synchronously. Compared to using a separate drive device to drive the shutter blades 5, this example can simplify the device, making the entire device lighter and more compact. For example, when used in a mobile phone or tablet computer, it meets the design requirements of a small, lightweight and thin design.

[0129] In the example of the present application, the shutter blade 5 blocks the light inlet 6. This can be understood as follows: the shutter blade 5 completely blocks the light inlet 6, so that the light inlet 6 cannot enter.

[0130] In the example of the present application, the shutter blade 5 deviates from the light intake hole 6. This can be understood as follows: as shown in Figures 13A to 13D, the shutter blade 5 deviates from the light intake hole 6, and the light intake hole 6 is completely open; alternatively, the shutter blade 5 deviates from the light intake hole 6 can also be understood as: the light intake hole 6 is partially blocked by the shutter blade 5, while the light is not blocked by the shutter blade 5. Light can still enter through the part of the light intake hole 6 that is not blocked by the shutter blade 5.

[0131] Referring again to Figures 13A to 13E , during the movement of the multiple aperture blades 4, the movement positions may include a first position and a second position. Furthermore, when the multiple aperture blades 4 move from the first position to the second position, the aperture of the light inlet 6 formed by the multiple aperture blades 4 increases in diameter. For example, in the first position shown in Figure 13E , the aperture of the light inlet 6 is smaller than in any of the second positions shown in Figures 13A to 13D . Furthermore, in the first position shown in Figure 13E , the shutter blade 5 blocks the light inlet 6, while in any of the second positions shown in Figures 13D to 13A , the shutter blade 5 does not block the light inlet 6.

[0132] In some examples, the first position of the shutter blade 5 when blocking the light aperture 6 may be the position of the smallest light aperture as shown in FIG. 13E .

[0133] In other examples, the second position of the shutter blade 5 when it deviates from the light hole 6 and does not block the light hole 6 can be any position including the maximum light hole shown in FIG. 13A and other positions except the minimum light hole.

[0134] In some examples involved in the present application, as mentioned above, multiple aperture blades 4 and shutter blades 5 are driven by the same driving device to move, start and stop at the same time, and the movement time is also the same.

[0135] For example, when moving from FIG. 13A toward the first position shown in FIG. 13E , the shutter blade 5 may intersect with one of the aperture blades 41, as shown in FIG. 14A . Specifically, as shown in FIG. 14A , the shutter blade 5 has a first side A and a second side B, with the first side A being closer to the center of the light entrance aperture than the second side B. The aperture blade 41 has a third side C and a fourth side D, with the third side C being closer to the center of the light entrance aperture than the fourth side D. When the first side A intersects the third side C, it can be understood that the aperture blade and the shutter blade have moved to a third position, which is between the first and second positions. As the aperture blade 41 and the shutter blade 5 continue to move from the third position toward the first position, as shown in FIG. 14B , when the shutter blade 5 completely blocks the light entrance aperture 6, it is apparent that the travel of the shutter blade 5 is greater than that of the aperture blade 41, resulting in a travel difference, as shown in FIG. 14B . In this way, when moving from the third position to the first position as shown in FIG14A , the movement speed of the shutter blade 5 is greater than the movement speed of the aperture blade 41. Thus, after the same movement time, the shutter blade 5 can completely block the light entrance 6. It can be understood that, from FIG14B to FIG14A , when the multiple aperture blades 4 move from the first position to the second position to achieve global exposure, the movement speed of the shutter blade 5 is greater than the movement speed of the aperture blade 4 when the multiple aperture blades 4 are in or near the first position. The movement speed here can be a linear velocity.

[0136] When the aperture blade 41 and the shutter blade 5 move from the third position toward the second position, in some examples, the movement speed of the shutter blade 5 may be less than the movement speed of the aperture blade 41; in other examples, the movement speed of the shutter blade 5 may be equal to the movement speed of the aperture blade 41; in still other examples, the movement speed of the shutter blade 5 may be greater than the movement speed of the aperture blade 41.

[0137] In short, when the aperture blade 41 and the shutter blade 5 move from the third position to the second position, the shutter blade 5 cannot block the light-inlet hole, and the light-inlet hole can be used as an aperture hole with a specific aperture.

[0138] The following, in conjunction with Figures 14A and 14B , illustrates the light inlet 6 formed by multiple aperture blades 4 according to an embodiment of the present application. It is understood that in some cases, the light inlet 6 can be used as an aperture with an aperture value (for example, a light inlet formed at a specific location can correspond to a specific aperture value, thereby serving as an aperture with a specific aperture); in other cases, the light inlet 6 will not be used as an aperture. Generally speaking, the smallest aperture is larger than the smallest light inlet 6, that is, when the light inlet 6 is used as an aperture, there is a minimum aperture diameter (maximum aperture value), after which the light inlet 6 can be further reduced until the minimum light inlet is reached.

[0139] For example, as shown in FIG14A , when the shutter blades and the plurality of aperture blades move, and the light inlet 6 formed by the plurality of aperture blades gradually shrinks until the side A of the aperture blade 41 intersects the side B of the shutter blade 5, the shutter blade 5 does not block the light inlet 6. In other words, the light inlet 6 is completely open. The light inlet 6 thus formed can serve as the aperture of the variable aperture device. The light inlet 6 shown in FIG14A can be the minimum aperture of the variable aperture device.

[0140] In some examples, when the shutter blades and multiple aperture blades continue to move in the position shown in Figure 14A, if the rotation angle of the shutter blades is small, for example, the rotation angle is less than or equal to 5°, the enclosed light inlet 6 can also be considered to be able to serve as the aperture hole of the variable aperture device.

[0141] For another example, from FIG14A to FIG14B , as the multiple aperture blades and shutter blades continue to move, the light inlet 6 formed by the multiple aperture blades further shrinks, and the shutter blades 5 partially block the light inlet 6, until it completely blocks the light inlet 6. In this state, the shutter blades 5 partially block the light inlet 6, or completely block the light inlet 6. In this state, the light inlet 6 cannot function as the aperture of the variable aperture device.

[0142] Returning to Figure 12A, in some examples, the multiple aperture blades 4 may include a first group of aperture blades Q1 and a second group of aperture blades Q2, and either group of the first group of aperture blades Q1 and the second group of aperture blades Q2 includes multiple aperture blades 4. For example, in the example of Figure 12A, it is shown that each group includes three surrounding aperture blades 4.

[0143] Also, the first group of diaphragm blades Q1 and the second group of diaphragm blades Q2 are stacked in a direction parallel to the optical axis.

[0144] In the example shown in Figure 12A , as the multiple aperture blades 4 move to enclose the light intake aperture 6, as shown in Figure 14A , a gap exists between each adjacent pair of aperture blades in the first group of aperture blades Q1, for example, between aperture blade 42 and aperture blade 43. However, aperture blade 44 in the second group of aperture blades can obstruct this gap. This way, returning to the top views shown in Figures 13A to 13E , when the multiple aperture blades move to adjust the size of the light intake aperture, there are no gaps between the multiple aperture blades, and light leakage will not occur, thus improving imaging performance.

[0145] FIG12A is only one example of the arrangement of multiple aperture blades. In other examples, one group of aperture blades or more groups of aperture blades may be included.

[0146] There are many situations for setting the positions of the shutter blades 5. This application takes the first group of aperture blades Q1 and the second group of aperture blades Q2 as examples to provide several situations for setting the shutter blades 5.

[0147] 12A , the shutter blades 5 are disposed between the first group of aperture blades Q1 and the second group of aperture blades Q2 , which can be understood as the shutter blades 5 being centrally disposed.

[0148] Figure 15 is an exploded view of a portion of the structure of another example variable aperture device in this application. In this example, the first set of aperture blades Q1 is closer to the light-entering side than the second set of aperture blades Q2, and the shutter blades 5 are positioned on the side of the second set of aperture blades Q2 closer to the light-exiting side. It can be considered that the shutter blades 5 are positioned at the bottom.

[0149] 16A , 16B, 16C, 16D and 16E show the structures of the plurality of aperture blades 4 and the shutter blade 5 when the shutter blade 5 is positioned at the bottom in FIG. 15 .

[0150] From Figures 16A to 16E , the multiple aperture blades 4 move along the P direction, gradually reducing the diameter of the light inlet 6 and increasing the aperture value. Furthermore, in Figures 16A , 16B , 16C , and 16D , the end of the shutter blade 5 deviates from the light inlet 6 formed by the multiple aperture blades 4 . In Figure 16E , the end of the shutter blade 5 has moved to the position of the light inlet 6, blocking it.

[0151] Figure 17 is an exploded view of a portion of the structure of another example variable aperture device in this application. In this example, the first set of aperture blades Q1 is closer to the light entrance side than the second set of aperture blades Q2, and the shutter blades 5 are positioned on the side of the first set of aperture blades Q1 closer to the light entrance side. It can be considered that the shutter blades 5 are positioned at the top in this example.

[0152] 18A , 18B, 18C, 18D and 18E show the structures of the plurality of aperture blades 4 and the shutter blade 5 moving to different positions when the shutter blade 5 is set at the top in FIG. 17 .

[0153] From Figures 18A to 18E , the multiple aperture blades 4 move along the P direction, gradually reducing the diameter of the light inlet 6 and increasing the aperture value. Furthermore, in Figures 18A , 18B , 18C , and 18D , the end of the shutter blade 5 deviates from the light inlet 6 formed by the multiple aperture blades 4 . In Figure 18E , the end of the shutter blade 5 has moved to the position of the light inlet 6, blocking it.

[0154] In the examples shown in Figures 12A, 15, and 17, a single shutter blade 5 is included. The end of this single shutter blade 5 blocks the light entrance aperture. For example, in Figure 19, the aperture blade 41 has an N1 side, and the shutter blade 5 has an N2 side. When the shutter blade 5 and the aperture blade 41 move to reduce the aperture of the light entrance aperture, both the N1 side and the N2 side move toward the center of the light entrance aperture. Furthermore, when the shutter blade 5 and the aperture blade 41 move to the first position (where the shutter blade 5 blocks the light entrance aperture), the N1 side and the N2 side can be located on either side of the center of the light entrance aperture. In this manner, the shutter blade 5 blocks the light entrance aperture.

[0155] In some other examples, more shutter blades may be included, and some possible implementation methods are given below.

[0156] As shown in the three examples shown in Figures 20, 22, and 24, a first shutter blade 51 and a second shutter blade 52 are included. The first shutter blade 51 and the second shutter blade 52 can be arranged along the circumference of the carrier 2, and the first shutter blade 51 and the second shutter blade 52 are respectively connected to the carrier 2 in a sliding manner and are respectively connected to the base 1 in a rotational manner.

[0157] When the multiple aperture blades 4 move from the first position to the second position, the aperture of the light entrance hole surrounded by the multiple aperture blades 4 becomes larger. In the first position, the first shutter blade 51 and the second shutter blade 52 block the light entrance hole. In the second position, the first shutter blade 51 and the second shutter blade 52 both deviate from the light entrance hole.

[0158] In the examples shown in Figures 20 to 24 , the movement of two shutter blades is used to block or open the light aperture. In other examples, more shutter blades may be included, for example, three or four. These shutter blades are arranged at intervals along the circumference of the carrier 2, and full exposure is achieved by using the shutter blades to block or open the light aperture in coordination.

[0159] 20 , the first shutter blade 51 and the second shutter blade 52 are both disposed between the first group of aperture blades Q1 and the second group of aperture blades Q2 , which can be understood as the first shutter blade 51 and the second shutter blade 52 being disposed in the center.

[0160] 21A , 21B , 21C , 21D and 21E illustrate the structures of the plurality of aperture blades 4 , the first shutter blade 51 and the second shutter blade 52 when the first shutter blade 51 and the second shutter blade 52 are centrally arranged in FIG. 20 , and when the plurality of aperture blades 4 , the first shutter blade 51 and the second shutter blade 52 move to different positions.

[0161] From Figures 21A to 21E , the multiple aperture blades 4 move along the P direction, gradually reducing the diameter of the enclosed light intake aperture 6 and increasing the aperture value. Furthermore, in Figures 21A , 21B , 21C , and 21D , the ends of the first and second shutter blades 51 , 52 are offset from the light intake aperture 6 and do not block it. However, in Figure 21E , the ends of the first and second shutter blades 51 , 52 have both moved to the position of the light intake aperture 6, collectively blocking it.

[0162] Figure 22 is an exploded view of a portion of the structure of another example variable aperture device in this application. In this example, the first set of aperture blades Q1 is closer to the light-entering side than the second set of aperture blades Q2. The first shutter blade 51 and the second shutter blade 52 are located on the side of the second set of aperture blades Q2 closer to the light-exiting side. It can be considered that the first shutter blade 51 and the second shutter blade 52 are located at the bottom.

[0163] 23A , 23B , 23C , 23D and 23E show the structures of the plurality of aperture blades 4 and shutter blades 5 moving to different positions when the first shutter blade 51 and the second shutter blade 52 are positioned at the bottom in FIG. 22 .

[0164] From Figures 23A to 23E , the multiple aperture blades 4 move along the P direction, gradually reducing the diameter of the enclosed light intake hole 6 and increasing the aperture value. Furthermore, in Figures 23A , 23B , 23C , and 23D , the bottom-positioned ends of the first and second shutter blades 51 , 52 are offset from the light intake hole 6 formed by the multiple aperture blades 4 . In Figure 23E , the bottom-positioned ends of the first and second shutter blades 51 , 52 move to the position of the light intake hole 6, thereby collectively blocking the light intake hole 6.

[0165] Figure 24 is an exploded view of a portion of the structure of another example of a variable aperture device in this application. In this example, the first set of aperture blades Q1 is closer to the light-entering side than the second set of aperture blades Q2. The first shutter blade 51 and the second shutter blade 52 are positioned on the side of the first set of aperture blades Q1 closer to the light-entering side. In this example, the first shutter blade 51 and the second shutter blade 52 can be considered to be positioned at the top.

[0166] Figures 25A, 25B, 25C, 25D and 25E show the structures of the first shutter blade 51 and the second shutter blade 52, and the multiple aperture blades 4 when they move to different positions when the first shutter blade 51 and the second shutter blade 52 are set at the top in Figure 24 above.

[0167] From Figures 25A to 25E , the multiple aperture blades 4 move along the P direction, gradually reducing the diameter of the light inlet 6 and increasing the aperture value. Furthermore, in Figures 25A , 25B , 25C , and 25D , the ends of the first and second shutter blades 51 , 52 are offset from the light inlet 6 formed by the multiple aperture blades 4 . In Figure 25E , the ends of the first and second shutter blades 51 , 52 have moved to the position of the light inlet 6, blocking it.

[0168] Referring to Figure 26, when the variable aperture device includes the first shutter blade 51 and the second shutter blade 52 in Figure 26, when the multiple aperture blades 4 move, causing the enclosed light entrance hole to gradually become smaller, the first contact surface 511 of the first shutter blade 51 and the second contact surface 521 of the second shutter blade 52 approach each other. In some examples, the first contact surface 511 and the second contact surface 521 can be planes parallel to the axial direction of the light entrance hole. In the first position, the first contact surface 511 contacts the second contact surface 521, so that the first shutter blade 51 and the second shutter blade 52 completely block the light entrance hole.

[0169] On the contrary, when the multiple aperture blades 4 move, causing the enclosed light hole to gradually become larger, the first contact surface 511 of the first shutter blade 51 that blocks the light hole and the second contact surface 521 of the second shutter blade 52 move away from each other until the light hole is opened, thereby achieving global exposure.

[0170] In some other examples, the first shutter blade 51 and the second shutter blade 52 can be arranged in sequence along a direction consistent with the axial direction of the light entrance. When the multiple aperture blades 4 move, causing the enclosed light entrance to gradually become smaller, the first shutter blade 51 and the second shutter blade 52 approach each other. When the multiple aperture blades move to the first position, the positive projection of the first shutter blade 51 on the second shutter blade 52 overlaps with at least part of the second shutter blade 52, and the overlapping part can completely block the light entrance.

[0171] In the embodiment of the present application, the shutter blade 5 is rotatably connected to the base 1 and is slidably connected to the carrier 2; and the aperture blade 4 is rotatably connected to the base 1 and is slidably connected to the carrier 2.

[0172] There are various ways to rotatably connect either the shutter blade 5 or the aperture blade 4 to the base 1. Figures 27 and 28 illustrate one such method. Figure 28 is an exploded view of Figure 27 . A rotating shaft 81 is provided on the base 1. For example, the rotating shaft 81 can be disposed on the inner ring structure 102 of the base 1. The shutter blade 5 has a rotating hole 82 (referred to as a first rotating hole), and the aperture blade 41 has a rotating hole 83 (referred to as a second rotating hole). The rotating shaft 81 passes through the rotating holes 82 and 83 and can rotate within the rotating holes 82 and 83, thereby rotatably connecting the shutter blade 5 and the aperture blade 41 to the base 1.

[0173] In the examples shown in FIG. 27 and FIG. 28 , the shutter blade 5 and the aperture blade 41 share the same rotating shaft 81 . This simplifies the structure and reduces the difficulty of assembly process.

[0174] There are various ways to achieve a sliding connection between the shutter blades 5 and the diaphragm blades 4 and the carrier 2. Figures 27 and 28 illustrate one such sliding connection. A slide post 71 is provided on the carrier 2. A guide groove 72 (referred to as a first guide groove) is defined on the shutter blade 5, and a guide groove 73 (referred to as a second guide groove) is defined on the diaphragm blade 41. The slide post 71 passes through the guide grooves 72 and 73 and can slide within the guide grooves 72 and 73 along the directions in which the corresponding guide grooves extend, thereby achieving a sliding connection between the shutter blades 5 and the diaphragm blades 41 and the carrier 2.

[0175] FIG29A shows a structural diagram of the aperture blades 41, FIG29B shows a structural diagram of the shutter blades 5, and FIG29C shows a structural diagram when the shutter blades 5 and the aperture blades 41 move until the shutter blades 5 block the light entrance hole.

[0176] In the example of this application, when the aperture blade 41 and the shutter blade 5 move to and approach the minimum light entrance hole, the movement speed of the shutter blade 5 is greater than the movement speed of the aperture blade 41. Therefore, during the design, the trajectory of the guide groove 73 shown in Figure 29A and the trajectory of the guide groove 72 shown in Figure 29B can be adjusted to ensure that when multiple aperture blades move to the minimum light entrance hole, the shutter blade 5 can block the minimum light entrance hole.

[0177] Alternatively, in other examples, the shape of the aperture blade 41 shown in FIG. 29A or the shape of the shutter blade 5 shown in FIG. 29B can be adjusted to ensure that when the plurality of aperture blades move to the minimum light entrance aperture, the shutter blade 5 can block the minimum light entrance aperture.

[0178] 29C , when the plurality of aperture blades move to the minimum light entrance hole and the shutter blade 5 can block the minimum light entrance hole, the orthographic projection of the guide groove 73 on the guide groove 72 overlaps with at least a portion of the guide groove 72 .

[0179] Please refer to Figure 30, which is an internal circuit diagram of an electronic device 100 according to an example of the present application. The electronic device 100 further includes a controller 9. For example, the controller 9 can be provided on a mainboard.

[0180] Controller 9 is electrically connected to camera module 30. Controller 9 is configured to receive and process electrical signals containing image information from camera module 30. Controller 9 is also configured to control the variable aperture device and drive motor of camera module 30 to adjust the amount of light entering the camera module 30, perform AF operation, and / or perform OIS operation.

[0181] The present application also provides a method for controlling the variable aperture device. The method for controlling the variable aperture device by the controller 9 includes:

[0182] A first instruction is received, where the first instruction may be a global exposure instruction.

[0183] According to the first instruction, the plurality of aperture blades and the shutter blade in the variable aperture device are controlled to move to the first position;

[0184] controlling the plurality of aperture blades and the shutter blade to move to a second position;

[0185] In the first position, the shutter blade blocks the light-entering hole formed by the plurality of aperture blades; in the second position, the shutter blade deviates from the light-entering hole formed by the plurality of aperture blades.

[0186] In this way, global exposure can be achieved by moving the plurality of aperture blades and the shutter blades from the first position to the second position.

[0187] In some examples, when a driving device in a variable aperture device for driving the movement of multiple aperture blades and shutter blades includes a coil and a magnet, or includes a piezoelectric structure, or includes an SMA driving structure, a first current can be applied to the driving device to cause the multiple aperture blades and shutter blades to move to a first position, and then a second current can be applied to the driving device to cause the multiple aperture blades and shutter blades to move to a second position.

[0188] In addition, the control method may further include:

[0189] A second instruction is received, where the second instruction may be a target aperture value instruction.

[0190] According to the second instruction, the plurality of aperture blades and the shutter blade are controlled to move to a target position between the first position and the second position. At the target position, the plurality of aperture blades form a target aperture, and the shutter blade is offset from the target aperture. Thus, a target aperture value is obtained.

[0191] When the plurality of aperture blades and the shutter blades move to a target position, the light entrance hole formed may correspond to a specific aperture value, and thus may serve as an aperture hole with a specific aperture.

[0192] In some examples, the target position includes the position shown in FIG. 14A (referred to as the third position), i.e., the position where side edge A of aperture blade 41 intersects side edge B of shutter blade 5, which may also form an aperture opening of a specific aperture. In other examples, the target position may include any position between the maximum light entrance aperture and the third position shown in FIG. 14A .

[0193] In some implementation structures, when the driving device in the variable aperture device for driving the movement of multiple aperture blades and shutter blades includes a coil and a magnet, or includes a piezoelectric structure, or includes an SMA driving structure, the multiple aperture blades and shutter blades can be moved to a third position by applying a third current to the driving device.

[0194] In some examples, FIG31 is an exploded view of a variable aperture device according to an embodiment of the present application. The device includes a sensing magnet 11 and a Hall sensor 12. The sensing magnet 11 and the Hall sensor 12 can detect the movement position of the carrier 2. Based on the movement position of the carrier 2, a calculation control unit calculates the movement amount of the aperture blades 4 and the shutter blades 5, thereby controlling the current applied to the drive device.

[0195] Continuing to refer to FIG. 31 , the variable aperture device further includes a circuit board 13 , and the Hall sensor 12 can be disposed on the circuit board 13 . Referring to FIG. 32 , an inlay groove 202 can be opened on the carrier 2 , and the sensing magnet 11 is disposed in the inlay groove 202 .

[0196] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0197] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A variable aperture device, characterized in that: include: seat body; A carrier, the carrier being rotatably connected to the base; A plurality of aperture blades and at least one shutter blade, wherein the plurality of aperture blades are arranged around the circumference of the carrier to form a light inlet hole, the plurality of aperture blades and the at least one shutter blade are rotatably connected to the seat body, and the plurality of aperture blades and the at least one shutter blade are slidably connected to the carrier; When the carrier rotates relative to the seat body, the plurality of aperture blades rotate relative to the seat body and slide relative to the carrier to adjust the size of the light inlet hole; The movement positions of the multiple aperture blades include a first position and a second position. When moving from the first position to the second position, the light entrance hole surrounded by the multiple aperture blades becomes larger; wherein, in the first position, the at least one shutter blade completely blocks the light entrance hole, and in the second position, the at least one shutter blade deviates from the light entrance hole.

2. The variable aperture device according to claim 1, characterized in that: The first position is the position where the plurality of aperture blades form a minimum light entrance hole.

3. The variable aperture device according to claim 1 or 2, characterized in that: The second position includes a position where the plurality of aperture blades form a maximum light entrance hole.

4. The variable aperture device according to any one of claims 1 to 3, characterized in that: The at least one shutter blade includes a first shutter blade having a first side and a second side; The plurality of aperture blades includes a first aperture blade having a third side and a fourth side; When the plurality of aperture blades move to the second position, the first side edge is closer to the center of the light inlet hole than the second side edge, and the third side edge is closer to the center of the light inlet hole than the fourth side edge; The movement positions of the multiple aperture blades also include a third position located between the first position and the second position. When the multiple aperture blades move from the first position to the third position, the first side edge intersects with the third side edge. When the multiple aperture blades move from the first position toward the third position, the movement speed of the first shutter blade is greater than the movement speed of the first aperture blade.

5. The variable aperture device according to any one of claims 1 to 4, characterized in that: The variable aperture device also includes: A driving device is connected to the base and the carrier, and is used to drive the carrier to rotate relative to the base to drive the multiple aperture blades and the at least one shutter blade to move.

6. The variable aperture device according to claim 5, characterized in that: The driving device comprises: A coil and a magnet, one of the coil and the magnet is arranged on the carrier, and the other is arranged on the seat.

7. The variable aperture device according to any one of claims 1 to 6, characterized in that: The at least one shutter blade includes: a first shutter blade and a second shutter blade; The first shutter blade includes a first contact surface, and the second shutter blade includes a second contact surface; When the multiple aperture blades move from the second position toward the first position, the first contact surface and the second contact surface approach each other. At the first position, the first contact surface and the first contact surface contact each other, so that the first shutter blade and the second shutter blade block the light entrance hole.

8. The variable aperture device according to any one of claims 1 to 6, characterized in that: The at least one shutter blade includes: a first shutter blade and a second shutter blade; The first shutter blade and the second shutter blade are sequentially arranged along a direction consistent with the axial direction of the light entrance hole; When the plurality of aperture blades move to the first position, the orthographic projection of the first shutter blade on the second shutter blade overlaps at least part of the second shutter blade.

9. The variable aperture device according to any one of claims 1 to 8, characterized in that: The plurality of aperture blades include a first group of aperture blades and a second group of aperture blades; The first group of aperture blades and the second group of aperture blades are stacked along a direction consistent with the axial direction of the light inlet; during the movement of the multiple aperture blades, there is a gap between every two adjacent aperture blades in the first group of aperture blades, and the second group of aperture blades includes aperture blades opposite to the gap and blocks the gap.

10. The variable aperture device according to claim 9, characterized in that: The light inlet hole surrounded by the plurality of aperture blades has a light inlet side and a light outlet side, and the first group of aperture blades is closer to the light inlet side than the second group of aperture blades; The at least one shutter blade is disposed between the first group of aperture blades and the second group of aperture blades; or, The at least one shutter blade is arranged on a side of the first group of aperture blades close to the light incident side; or, The at least one shutter blade is arranged on a side of the second group of aperture blades close to the light exiting side.

11. The variable aperture device according to any one of claims 1 to 10, characterized in that: The at least one shutter blade is rotatably connected to the base body via a hinge structure; Each of the hinge structures comprises a first rotating hole and a rotating shaft rotatably disposed in the first rotating hole, wherein the axial direction of the rotating shaft is consistent with the axial direction of the light inlet hole; The first rotating hole is opened on the at least one shutter blade, and the rotating shaft is arranged on the seat body.

12. The variable aperture device according to claim 11, characterized in that: The multiple aperture blades include a first aperture blade, the first aperture blade is provided with a second rotating hole, the at least one shutter blade includes a first shutter blade, the first shutter blade is provided with the first rotating hole, the first rotating hole and the second rotating hole are interconnected, and the rotating shaft passes through the first rotating hole and the second rotating hole, so that the first shutter blade and the first aperture blade are both rotatably connected to the seat body.

13. The variable aperture device according to any one of claims 1 to 12, characterized in that: The at least one shutter blade is slidably connected to the carrier via a sliding structure; Each of the sliding structures comprises a first guide groove and a sliding post slidably disposed in the first guide groove; The first guide groove is formed on the at least one shutter blade, and the slide column is arranged on the carrier.

14. The variable aperture device according to claim 13, characterized in that: The multiple aperture blades include a first aperture blade, the first aperture blade is provided with a second guide groove, the at least one shutter blade includes a first shutter blade, the first shutter blade is provided with the first guide groove, the sliding column passes through the first guide groove and the second guide groove, so that the first shutter blade and the first aperture blade are both slidably connected to the carrier.

15. A camera module, characterized in that: include: The variable aperture device according to any one of claims 1 to 14; A lens is arranged on the light-emitting side of the aperture hole of the variable aperture device.

16. An electronic device, characterized in that: include: The camera module according to claim 15; A controller is electrically connected to the camera module.

17. A method for controlling a variable aperture device, characterized in that: The variable aperture device includes a plurality of aperture blades and shutter blades; The control method comprises: receiving a first instruction; According to the first instruction, controlling the plurality of aperture blades and the shutter blade to move to a first position, and controlling the plurality of aperture blades and the shutter blade to move from the first position to a second position; Wherein, in the first position, the shutter blade completely blocks the light inlet formed by the multiple aperture blades; in the second position, the shutter blade deviates from the light inlet formed by the multiple aperture blades.

18. The control method of the variable aperture device according to claim 17, characterized in that: The control method further comprises: receiving a second instruction; According to the second instruction, the multiple aperture blades and the shutter blades are controlled to move to a target position between the first position and the second position, at which the light inlet hole surrounded by the multiple aperture blades serves as a target aperture hole, and the shutter blades deviate from the target aperture hole.

Images