Variable aperture device, camera module and electronic equipment

Abstract

The embodiment of the invention provides a variable aperture device, a camera module and electronic equipment. Relates to the technical field of electronic equipment shooting. Mainly aims to provide a structure capable of integrating a mechanical shutter for controlling global exposure in a variable aperture device. The variable aperture device comprises a seat body, a carrier, a plurality of aperture blades and a plurality of shutter blades, when the carrier rotates relative to the seat body, the aperture blades and the shutter blades slide relative to the carrier and rotate relative to the seat body; the movement positions of the multiple aperture blades comprise a first position and a second position, and when the multiple aperture blades move from the first position to the second position, a light inlet hole defined by the multiple aperture blades becomes large; at the first position, the shutter blade completely shields the light inlet hole, and at the second position, the shutter blade deviates from the light inlet hole. According to the invention, global exposure is realized through cooperation of a plurality of aperture blades and shutter blades.

Description

Technical Field

[0001] 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

[0002] The shutter is a structure used by the camera to control the exposure time of the photosensitive film. The exposure modes include rolling shutter and total shutter.

[0003] 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.

[0004] However, if the object being photographed is moving or vibrating at high speed relative to the camera, and the electronic shutter method for controlling rolling exposure is used to shoot, the line-by-line scanning speed may not be fast enough, and the shooting result may appear "tilted", "wobbly" or "partially exposed". This phenomenon of shooting with the rolling shutter method is defined as the jello effect.

[0005] In addition, indoor lighting, preview and recording are prone to produce a time domain aliasing phenomenon caused by the industrial frequency 50Hz, 60Hz and rolling shutter exposure mechanism, resulting in stripe flicker (banding) phenomenon.

[0006] On the contrary, global exposure uses the characteristics of all pixels being exposed at the same time to compensate for the above-mentioned jelly effect and streak flickering. For example, a mechanical shutter capable of global exposure is usually integrated into the camera device, but these technologies will lead to problems such as significantly increasing the size of the device and significantly increasing the cost. Summary of the invention

[0007] The present application provides a variable aperture device, a camera module having the variable aperture device, and an electronic device including the camera module. The main purpose is to integrate a mechanical shutter that can control global exposure into the variable aperture device structure, so that the introduction of the mechanical shutter will not significantly increase the size of the device and significantly increase the cost.

[0008] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions:

[0009] 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.

[0010] The variable aperture device includes a seat body and a carrier, as well as a plurality of aperture blades and at least one shutter blade. The carrier is rotatably connected to the seat body, and the plurality of aperture blades are arranged around the circumference of the carrier to form a light inlet. The plurality of aperture blades and the at least one shutter blade are both rotatably connected to the seat body, and the plurality of aperture blades and the at least one shutter blade are both slidably connected to the carrier. When the carrier rotates relative to the seat body, the plurality of aperture blades and the at least one shutter blade slide relative to the carrier and rotate relative to the seat body, and 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. The movement positions of the plurality of aperture blades include a first position and a second position. When moving from the first position to the second position, the light inlet formed by the plurality of 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, and in the first position, the at least one shutter blade blocks the light well, so that the light well cannot receive external light.

[0011] The variable aperture device provided in the present application includes not only a plurality of aperture blades capable of adjusting the size of the light entrance hole, but also a shutter blade capable of moving 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 plurality of aperture blades move to a first position, the shutter blades can block the light entrance hole, and when in a 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 can 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.

[0012] This application integrates a mechanical shutter that realizes global exposure into a variable aperture device structure that can adjust the aperture size, and realizes global exposure by using the cooperation of multiple aperture blades and shutter blades. The variable aperture device involved in this application can not only maintain the aperture variable function, but also be used as a mechanical shutter to control global exposure. In this way, the application scheme will not significantly increase the device size and cost due to the addition of shutter blades that can control global exposure.

[0013] In a possible implementation, the first position is a position where a plurality of aperture blades form a minimum light intake hole.

[0014] In a possible implementation, the second position includes a position where a plurality of aperture blades form a maximum light intake hole.

[0015] In the example, when multiple aperture blades adjust the aperture from the maximum aperture to the minimum aperture, the shutter blades are all deviated and do not block the aperture, which does not affect the aperture continuous variable function. Only when it is at the minimum light intake hole, the shutter blades block the minimum light intake hole. Although the example integrates the mechanical door opening that controls the global exposure with the variable aperture device, their respective functions are independent of each other and do not affect each other.

[0016] In one possible implementation, at least one shutter blade includes a first shutter blade, the first shutter blade has a first side and a second side; multiple aperture blades include a first aperture blade, the first aperture blade has 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.

[0017] 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.

[0018] In a 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.

[0019] By using the same driving device, the synchronous start and stop of the aperture blades and the shutter blades are achieved. On the basis of realizing the variable aperture device and global exposure, the present application adopts a driving device and does not need a separately designed 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.

[0020] 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.

[0021] In one example, when the coil is disposed on the base, the magnet is disposed on the carrier; or, in another example, when the magnet is disposed on the carrier, the coil is disposed on the base.

[0022] 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 to 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 hole.

[0023] The implementation structure includes not only a first shutter blade but also a second shutter blade. When in the first position, the aperture hole is blocked by the matched first shutter blade and the second shutter blade.

[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 and the second shutter blade are arranged in sequence 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.

[0025] The light-inlet hole is shielded by the overlapping portion of the first shutter blade and the second shutter blade.

[0026] In a possible implementation manner, in addition to the first shutter blade and the second shutter blade, more shutter blades are included, and the shutter blades are circumferentially arranged around the carrier.

[0027] 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 in a direction consistent with the axial direction of the light entrance hole, and 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.

[0028] In this example, the stacked first group of aperture blades and second group of aperture blades are rotated and slid to surround the light entrance hole; and, during the movement of the first group of aperture blades and the second group 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.

[0029] In one possible implementation, an aperture hole surrounded by multiple aperture blades has a light entrance side and a light exit side, and a first group of aperture blades are closer to the light entrance side than a 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 a side of the first group of aperture blades close to the light entrance side; or, at least one shutter blade is arranged on a side of the second group of aperture blades close to the light exit side.

[0030] Three different setting positions of the shutter blades are given above. 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 incident side, which is a top setting. Another is to be set close to the light exiting side, which is a bottom setting.

[0031] In one possible implementation, the at least one shutter blade is rotatably connected to the base body via 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 input hole; the first rotating hole is opened on the at least one shutter blade, and the rotating shaft is arranged on the base body.

[0032] The rotating shaft and the rotating hole matched with the rotating shaft are used to realize the rotating connection between the shutter blade and the seat body, and the structure is simple and easy to realize.

[0033] In one possible implementation, multiple aperture blades include a first aperture blade, the first aperture blade is provided with a second rotating hole, at least one shutter blade includes a first shutter blade, the first shutter blade is provided with a first rotating hole, the first rotating hole and the second rotating hole are interconnected, and a 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.

[0034] 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.

[0035] In a 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.

[0036] Thus, when in the first position, the first shutter blade covers the aperture.

[0037] In one possible implementation, the at least one shutter blade is slidably connected to the carrier via a sliding structure; each sliding structure includes a first guide groove, and a sliding column slidably 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.

[0038] The sliding column and the guide groove matched with the sliding column are used to realize the rotation connection between the aperture blade and the seat body, and the structure is simple and easy to realize.

[0039] 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.

[0040] That is, the first shutter blade and the first aperture blade may share the same slide post.

[0041] In a possible implementation manner, an orthographic projection of the first guide groove on the first aperture blade overlaps at least a portion of the second guide groove.

[0042] 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-mentioned implementations, and the lens is arranged on the light-emitting side of the aperture hole of the variable aperture device.

[0043] The camera module provided in the embodiment of the present application includes the variable aperture device involved above. In the variable aperture device, not only a plurality of aperture blades that can form a light entrance hole are included, but also shutter blades are included. The shutter blades and the aperture blades are integrated in a variable aperture device, thereby realizing the continuous variable aperture function and the full exposure function.

[0044] On the other hand, the present application also provides an electronic device, including a controller and a camera module in any of the above implementations, wherein the controller is electrically connected to the camera module.

[0045] 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.

[0046] In yet another aspect, the present application further provides a control method for a variable aperture device, wherein the variable aperture device comprises a plurality of aperture blades and a shutter blade;

[0047] Control methods include:

[0048] receiving a first instruction;

[0049] According to the first instruction, controlling the plurality of aperture blades and the shutter blade to move to a first position;

[0050] Controlling a plurality of aperture blades and shutter blades to move from the first position to a second position;

[0051] Wherein, in the first position, the shutter blade completely blocks the light inlet formed by the plurality of aperture blades; and in the second position, the shutter blade deviates from the light inlet formed by the plurality of aperture blades.

[0052] 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 cooperation of multiple aperture blades and shutter blades.

[0053] In a possible implementation, the control method further includes:

[0054] receiving a second instruction;

[0055] 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, wherein the plurality of aperture blades surround a target aperture hole and the shutter blade deviates from the target aperture hole at the target position.

[0056] This control method reflects that the aperture value can be controlled, and when adjusting the aperture value, 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

[0057] Figure 1 A perspective view of an electronic device provided for some embodiments of the present application;

[0058] Figure 2 for Figure 1 an exploded view of the electronic device shown;

[0059] Figure 3 A stereoscopic diagram of a camera module provided in some embodiments of the present application;

[0060] Figure 4 for Figure 3 An exploded view of the camera module shown;

[0061] Figure 5 A three-dimensional diagram of a variable aperture device provided in an embodiment of the present application;

[0062] Figure 6 An exploded diagram of a variable aperture device provided in an embodiment of the present application;

[0063] Figure 7 An exploded diagram of a variable aperture device provided in an embodiment of the present application;

[0064] Figure 8 An exploded diagram of a variable aperture device provided in an embodiment of the present application;

[0065] Fig. 9 A three-dimensional diagram of a seat body in a variable aperture device provided in an embodiment of the present application;

[0066] Fig.10 A three-dimensional diagram of a driving device, a carrier and a seat body in a variable aperture device provided in an embodiment of the present application;

[0067] Fig.11 A structural diagram of a driving device in a variable aperture device provided in an embodiment of the present application;

[0068] Fig. 12A An exploded diagram of a variable aperture device provided in an embodiment of the present application;

[0069] Fig. 12B A structural diagram of multiple aperture blades provided in an embodiment of the present application;

[0070] Fig.13A , Fig. 13B , Fig. 13C , Fig.13D and Fig.13E is a structural diagram of a plurality of aperture blades and shutter blades moving to different positions according to an embodiment of the present application;

[0071] Fig.14A and Fig. 14B is a structural diagram of a plurality of aperture blades and shutter blades moving to different positions according to an embodiment of the present application;

[0072] Fig.15 An exploded diagram of a variable aperture device provided in an embodiment of the present application;

[0073] Fig.16A , Fig. 16B , Fig. 16C , Fig.16D and Fig.16E is a structural diagram of a plurality of aperture blades and shutter blades moving to different positions according to an embodiment of the present application;

[0074] Fig.17 An exploded diagram of a variable aperture device provided in an embodiment of the present application;

[0075] Fig.18A , Fig.18B , Fig.18C , Fig.18D and Fig.18E is a structural diagram of a plurality of aperture blades and shutter blades moving to different positions according to an embodiment of the present application;

[0076] Fig.19 A top view of a shutter blade and an aperture blade in a variable aperture device provided in an embodiment of the present application;

[0077] Fig. 20 An exploded diagram of a variable aperture device provided in an embodiment of the present application;

[0078] Fig.21A , Fig.21B , Fig. 21C , Fig.21D and Fig.21E is a structural diagram of a plurality of aperture blades and shutter blades moving to different positions according to an embodiment of the present application;

[0079] Fig. 22 An exploded diagram of a variable aperture device provided in an embodiment of the present application;

[0080] Fig.23A , Fig. 23B , Fig.23C , Fig.23D and Fig.23E is a structural diagram of a plurality of aperture blades and shutter blades moving to different positions given in an embodiment of the present application;

[0081] Fig.24 An exploded diagram of a variable aperture device provided in an embodiment of the present application;

[0082] Fig.25A , Fig.25B , Fig.25C , Fig.25D and Fig.25E is a structural diagram of a plurality of aperture blades and shutter blades moving to different positions according to an embodiment of the present application;

[0083] Fig.26 A top view of a variable aperture device provided in an embodiment of the present application;

[0084] Fig. 27 A three-dimensional diagram of a partial structure of a variable aperture device provided in an embodiment of the present application;

[0085] Fig.28 An exploded view of a part of the structure of a variable aperture device provided in an embodiment of the present application;

[0086] Fig.29A , Fig.29B and Fig.29C is a structural diagram of aperture blades and shutter blades given in an embodiment of the present application;

[0087] Fig.30 An internal circuit diagram of an electronic device used as an example in this application;

[0088] Fig.31 A three-dimensional diagram of a partial structure of a variable aperture device provided in an embodiment of the present application;

[0089] Fig.32 A three-dimensional diagram of a carrier in a variable aperture device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0090] The embodiment of the present application provides an electronic device, which is a type of electronic device with a shooting function, specifically, the electronic device can be a portable electronic device or other suitable electronic device. For example, the electronic device can be a mobile phone, a tablet personal computer, a laptop computer, a personal digital assistant (PDA), a camera, a personal computer, a notebook computer, a vehicle-mounted device, a wearable device, augmented reality (AR) glasses, an AR helmet, virtual reality (VR) glasses or a VR helmet, etc.

[0091] See also Figure 1 and Figure 2 , Figure 1 A three-dimensional diagram of an electronic device provided in some embodiments of the present application, Figure 2 for Figure 1 The exploded view of the electronic device is shown. In this embodiment, the electronic device is a mobile phone as an example. The electronic device includes a housing 10, a camera decorative cover 20, a camera module 30 and a mainboard 40.

[0092] The housing 10 is a housing structure formed by splicing a front cover plate (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.

[0093] The back cover 12 is provided with an installation opening 50, and the camera decorative cover 20 covers the installation opening 50. The camera decorative cover 20 is used to protect the camera module of the electronic device. In some embodiments, the camera decorative cover 20 protrudes to the outside of the housing 10, so that the camera decorative cover 20 can increase the installation space of the camera module in the electronic device along the thickness direction of the electronic device (that is, direction Z).

[0094] 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.

[0095] The camera module 30 is disposed in the housing 10 , and is used for taking photos and videos.

[0096] The camera module 30 integrates a variable aperture device (VA) and a drive motor. The variable aperture device is used to adjust the amount of incoming light. The drive motor is used to achieve automatic focusing (AF) and / or optical image stabilization (OIS).

[0097] See also Figure 3 and Figure 4 , Figure 3 for Figure 1 and Figure 2 The stereogram of the camera module 30 in the electronic device 100 is shown. Figure 4 for Figure 3 The exploded view of the camera module 30 is shown. In this embodiment, the camera module 30 includes an optical lens 31, a variable aperture device 32, a driving motor 33 and a photosensitive structure 34.

[0098] The optical lens 31 is used to image the scene being photographed, and the optical lens 31 may include a light incident surface and a light emitting surface. The light incident surface is the surface of the optical lens 31 facing the scene being photographed when in use. Scene light is incident into the optical lens 31 from the light incident surface. The light emitting 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 is emitted from the light emitting surface.

[0099] The variable aperture device 32 has a light inlet hole 32a of variable size. The light inlet hole 32a is located at the light entrance side of the optical lens 31. The scene light enters the optical lens 31 through the light inlet hole 32a. In this way, 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.

[0100] In some electronic devices, electronic shutter rolling exposure is used to take photos and videos. In some usage scenarios, the electronic shutter rolling exposure can no longer meet the requirements for shooting results. For example, when shooting high-speed moving or fast-vibrating objects, the electronic shutter rolling exposure will show jello effects such as "tilting", "wobbling" or "partial exposure".

[0101] 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.

[0102] Figure 5 is a three-dimensional diagram of a variable aperture device provided in an embodiment of the present application, Figure 6 for Figure 5 An exploded view of the variable aperture device shown, and Figure 6 Yes Figure 5The structure shown is partially decomposed, not fully decomposed. Figure 7 The structure diagram of the carrier and the seat body in the variable aperture device is shown.

[0103] Combination Figure 5 and Figure 6 In this embodiment, the variable aperture device includes a base 1 and a carrier 2. Figure 7 The seat body 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 inside the seat body 1 into a first installation cavity 103 and a second installation cavity 104 , and the first installation cavity 103 is arranged around the second installation cavity 104 .

[0104] For example, Figure 7 The carrier 2 can be rotatably arranged in the first installation cavity 103, and the second installation cavity 104 can be arranged as described above. Figure 5 The optical lens 31 is involved.

[0105] In order to make the carrier 2 rotate relative to the base 1, Figure 8 As shown, the variable aperture device further includes a driving device 3, and the driving device 3 is used to drive 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.

[0106] The driving device 3 has a variety of structures that can be realized. For example, it can include a coil and a magnet; for another example, it can include a piezoelectric structure made of piezoelectric material; for another example, it can include a shape memory alloy (SMA) driving structure.

[0107] 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 .

[0108] For example, in Figure 8 In the example, the magnet 302 is arranged on the base 1, and the coil 301 is arranged on the carrier 2; Fig.10 In the example, the magnet 302 is disposed on the carrier 2 , and the coil 301 is disposed on the base 1 .

[0109] There are many ways to set the coil 301. For example, Figure 8 In the embodiment, an embedding groove 201 is provided on the carrier 2 , and the coil 301 is arranged in the embedding groove 201 .

[0110] The magnet 302 can also be arranged in a variety of ways. Figure 8 and Fig. 9, an inlay groove 105 is provided on the seat body 1, and the magnet 302 is arranged in the inlay groove 105. For example, the inlay groove 105 can be provided on the outer ring structure 101 of the seat body 1, and the magnet 302 can be fixed in the inlay groove 105.

[0111] 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 part of the coil 301 .

[0112] The driving device 3 including the coil 301 and the magnet 302 may be provided in plurality, such as Figure 8 , multiple driving devices 3 can be arranged at intervals along the circumference of the carrier 2 to improve the stability of the rotation of the carrier 2 relative to the base 1.

[0113] In order to ensure the stability of electromagnetic induction between the coil 301 and the magnet 302, Fig.11 , Fig.11 , a protective structure for protecting the driving device 3 is shown, and the variable aperture device further includes a magnetic shielding structure 7, in which the magnet 301 is fixed. Return to Fig. 9 In the embodiment, the magnetic blocking structure 7 can also be arranged in the embedding groove 105 of the base body 1.

[0114] The magnetic shielding structure 7 can weaken the interference of other structures on the electromagnetic induction between the coil 301 and the magnet 302. For example, when other electromagnetic devices are arranged around the variable aperture device, the magnetic shielding structure 7 can be used to weaken the electromagnetic interference between the electromagnetic device and the driving device 3 in the embodiment of the present application.

[0115] See also Fig. 12A , Fig. 12A : is an exploded view of a part of the structure of the variable aperture device of the present application. The variable aperture device further comprises a plurality of aperture blades 4, the plurality of aperture blades 4 are arranged around the circumference of the carrier 2, each aperture blade 4 is slidably connected to the carrier 2, and each aperture blade 4 is rotatably connected to the seat body 1.

[0116] 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 will be driven to rotate relative to the base 1 and slide relative to the carrier 2 to adjust the aperture. Fig. 12B The size of the light inlet hole 6 surrounded by the plurality of aperture blades 4 is shown. For example, the central axis of the light inlet hole 6 is consistent with the optical axis of the optical lens 31 .

[0117] The size of the light-entry hole 6 involved in the embodiment of the present application can be understood as follows: Fig. 12B The area size of the light-entering hole 6 shown in FIG. 1 may also be understood as the aperture size of the light-entering hole 6. For example, Fig. 12BIn the embodiment, the light inlet hole 6 is surrounded by a plurality of sides to form a nearly circular structure, and the aperture of the light inlet hole 6 can be the distance D1 between two opposite sides, or the distance D2 between two opposite corners.

[0118] In addition, continue to read Fig. 12A The variable aperture device also includes at least one shutter blade 5, each shutter blade 5 is slidably connected to the carrier 2 and rotatably connected to the base body 1. Fig. 12A The example shows a shutter blade 5 .

[0119] In this way, when the carrier 2 rotates relative to the base body 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 body 1 .

[0120] Fig.13A , Fig. 13B , Fig. 13C , Fig.13D and Fig.13E It shows the structure when a plurality of aperture blades 4 and shutter blades 5 move to different positions.

[0121] Depend on FIG. 13A to FIG. 13E , the plurality of aperture blades 4 move along the P direction, so that the aperture of the light-inlet hole 6 formed by them gradually becomes smaller. Fig.13A , Fig. 13B , Fig. 13C and Fig.13D In the embodiment, the end of the shutter blade 5 deviates from the light-inlet hole 6 formed by the plurality of aperture blades 4, which can be understood as follows: the end of the shutter blade 5 does not block the light-inlet hole 6. Fig.13E In the embodiment of the present invention, the end of the shutter blade 5 moves to the position of the light inlet hole 6 to completely block the light inlet hole 6.

[0122] On the contrary, when the plurality of aperture blades 4 and shutter blades 5 are Fig.13E towards Fig.13A When exercising, Fig.13E In the embodiment, the end of the shutter blade 5 completely blocks the light inlet 6. As the multiple aperture blades 4 and the shutter blade 5 continue to move, the shutter blade 5 blocking the light inlet 6 will deviate from the light inlet 6, exposing the light inlet 6 to collect light.

[0123] exist Fig.13E The state in which the shutter blade 5 completely blocks the light inlet 6 is switched to a state in which the shutter blade 5 does not block the light inlet 6, thereby achieving global exposure.

[0124] Based on the above structure, in the example of the present application, full exposure is achieved by using the coordination of the shutter blade 5 and the plurality of aperture blades 4. For example, when the structure is used to shoot high-speed motion or rapid vibration, all pixels of the photosensitive device are exposed at the same time, which can reduce the "tilt", "sway" or "partial exposure" of the shooting structure, so as to improve the shooting effect and enhance the user experience.

[0125] In addition, the variable aperture device of the example of the present application can also maintain the function of adjusting the aperture without affecting the aperture continuously variable function. Compared with some existing technologies, the present application integrates the shutter blades as a mechanical shutter into the variable aperture structure, and uses the cooperation of the mechanical shutter and multiple aperture blades to achieve global exposure. In this way, the volume of the camera device will not be excessively increased due to the introduction of the mechanical shutter, and the manufacturing cost will not be increased.

[0126] In addition, the above description states that the multiple aperture blades 4 and shutter blades 5 are moved under the action of the same driving device 3, for example, the multiple aperture blades 4 and shutter blades 5 are started and stopped synchronously. Compared with using a separate driving device to drive the shutter blades 5 to move, the present application example can simplify the device, making the entire device lighter and smaller, for example, when used in a mobile phone or tablet computer, it meets the design requirements of miniaturization and lightness.

[0127] In the example of the present application, the shutter blade 5 blocks the light inlet 6. It can be understood that the shutter blade 5 completely blocks the light inlet 6, so that the light inlet 6 cannot enter.

[0128] In this example, the shutter blade 5 deviates from the light inlet hole 6. FIG. 13A to FIG. 13D As shown, the shutter blade 5 deviates from the light hole 6, and the light hole 6 is completely open; alternatively, the shutter blade 5 deviates from the light hole 6 can also be understood as: part of the light hole 6 is blocked by the shutter blade 5, and part of it is not blocked by the shutter blade 5, and light can still enter through the part of the light hole 6 that is not blocked by the shutter blade 5.

[0129] Recombination FIG. 13A to FIG. 13E During the movement of the plurality of aperture blades 5, the movement positions may include a first position and a second position, and when the plurality of aperture blades 5 move from the first position to the second position, the aperture of the light inlet 6 formed by the plurality of aperture blades 5 becomes larger. For example, Fig.13E The first position of display, compared to FIG. 13A to FIG. 13D In any of the second positions shown, the aperture of the light inlet hole 6 is small. And, Fig.13E In the first position of the example, the shutter blade 5 blocks the light inlet 6. FIG. 13D to FIG. 13A In any second position of the example, the shutter blade 5 does not block the light hole 6 .

[0130] In some examples, the first position of the shutter blade 5 when covering the light-entering hole 6 may be as follows: Fig.13E The position of the minimum light aperture is shown.

[0131] In some other examples, the second position of the shutter blade 5, when it deviates from the light inlet hole 6 and does not block the light inlet hole 6, may include: Fig.13A The largest light aperture shown, and any other position except the smallest light aperture.

[0132] 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.

[0133] For example, by Fig.13A towards Fig.13E When the first position of the display moves, there will be Fig.14A The phenomenon shown in FIG. 5 is that the shutter blade 5 meets one of the aperture blades 41, that is, Fig.14A In the figure, the shutter blade 5 has a first side A and a second side B, and the first side A is closer to the center of the light entrance hole than the second side B, and the aperture blade 41 has a third side C and a fourth side D, and the third side C is closer to the center of the light entrance hole than the fourth side D. When the first side A intersects with the third side C, it can be understood that the aperture blade and the shutter blade move to the third position, and the third position is between the first position and the second position. As the aperture blade 41 and the shutter blade 5 continue to move from the third position to the first position, as shown in FIG. Fig. 14B When the shutter blade 5 completely blocks the light-entry hole 6, it is obvious that the stroke of the shutter blade 5 is greater than the stroke of the aperture blade 41. Fig. 14B The shown will have a travel difference. In this case, Fig.14A When the shutter blade 5 moves from the third position to the first position, the movement speed of the shutter blade 5 is greater than the movement speed of the aperture blade 41. Therefore, after the same movement time, the shutter blade 5 can completely cover the light inlet 6. FIG. 14B to FIG. 14A In the process where the plurality of aperture blades 4 move from the first position to the second position to achieve global exposure, when the plurality of aperture blades 4 are at or near the first position, the movement speed of the shutter blade 5 is greater than the movement speed of the aperture blade 4. The movement speed here may be a linear speed.

[0134] 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 yet other examples, the movement speed of the shutter blade 5 may be greater than the movement speed of the aperture blade 41.

[0135] 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.

[0136] Combine the following Fig.14A and Fig. 14B , illustrating the light inlet hole 6 surrounded by multiple aperture blades 4 involved in the embodiment of the present application. It can be understood that the light inlet hole 6 can be used as an aperture hole with an aperture value in some cases (for example, the light inlet hole formed at a specific position can correspond to a specific aperture value, and thus can be used as an aperture hole with a specific aperture); in other cases, the light inlet hole 6 will not be used as an aperture hole. Generally speaking, the smallest aperture hole is larger than the smallest light inlet hole 6, that is, when the light inlet hole 6 is used as an aperture hole, there is a minimum aperture diameter (maximum aperture value), after which the light inlet hole 6 can be further reduced until the minimum light inlet hole is reached.

[0137] For example, Fig.14A When the shutter blades and multiple aperture blades move, and the light inlet 6 surrounded by the multiple aperture blades gradually shrinks, until the side A of the aperture blade 41 intersects with the side B of the shutter blade 5, the shutter blade 5 does not block the light inlet 6, that is, the light inlet 6 is completely open. The light inlet 6 formed in this way can be used as the aperture hole of the variable aperture device. Fig.14A The light inlet hole 6 shown may be the smallest aperture hole of the variable aperture device.

[0138] In some examples, the shutter blade and the plurality of aperture blades are Fig.14A When the position shown continues to move, if the shutter blades rotate at a small angle, for example, the rotation angle is less than or equal to 5°, the enclosed light inlet hole 6 can also be considered to be able to serve as the aperture hole of the variable aperture device.

[0139] For example, by FIG. 14A to FIG. 14B As the multiple aperture blades and the shutter blades continue to move, the light inlet hole 6 surrounded by the multiple aperture blades is further reduced, and the shutter blades 5 partially block the light inlet hole 6 until it is completely blocked. Then, the shutter blades 5 partially block the light inlet hole 6, or completely block the light inlet hole 6, and the light inlet hole 6 in this state cannot be used as the aperture hole of the variable aperture device.

[0140] Back to Fig. 12A In some examples, the plurality of aperture blades 4 may include a first group of aperture blades Q1 and a second group of aperture blades Q2, and either of the first group of aperture blades Q1 and the second group of aperture blades Q2 includes a plurality of aperture blades 4. For example, Fig. 12A In the example shown, each group comprises three surrounding aperture blades 4 .

[0141] Also, the first group of aperture blades Q1 and the second group of aperture blades Q2 are stacked in a direction parallel to the optical axis.

[0142] exist Fig. 12A In the example shown, during the movement of the plurality of aperture blades 4 to form the light inlet hole 6, as shown in FIG. Fig.14A As shown, there is a gap between each two adjacent aperture blades in the first group of aperture blades Q1, for example, there is a gap between the aperture blade 42 and the aperture blade 43, but the aperture blade 44 in the second group of aperture blades can block the gap. FIG. 13A to FIG. 13E The top view shows that when multiple aperture blades are moving to adjust the size of the light entrance hole, there will be no gaps between the multiple aperture blades and no light leakage, which can improve the shooting performance.

[0143] Above Fig. 12A This 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.

[0144] There are many situations for setting the positions of the shutter blades 5 . The present application takes the first group of aperture blades Q1 and the second group of aperture blades Q2 as examples and gives several situations for setting the shutter blades 5 .

[0145] like Fig. 12A The shutter blade 5 is disposed between the first group of aperture blades Q1 and the second group of aperture blades Q2, which can be understood as the shutter blade 5 being disposed in the center.

[0146] like Fig.15 , Fig.15 This is a partial exploded view of another variable aperture device in the present application. In this example, the first group of aperture blades Q1 is closer to the light-entering side than the second group of aperture blades Q2, and the shutter blades 5 are arranged on the side of the second group of aperture blades Q2 close to the light-exiting side. It can be considered that the shutter blades 5 are arranged at the bottom.

[0147] Fig.16A , Fig. 16B , Fig. 16C , Fig.16D and Fig.16E The above Fig.15 In the figure, when the shutter blade 5 is set at the bottom, the plurality of aperture blades 4 and the shutter blade 5 move to different positions.

[0148] Depend on FIG. 16A to FIG. 16E , the plurality of aperture blades 4 move along the P direction, so that the aperture of the light-entering hole 6 formed by them gradually decreases, and the aperture value gradually increases. Fig.16A , Fig. 16B , Fig. 16C and Fig.16D In the embodiment, the end of the shutter blade 5 deviates from the light inlet hole 6 formed by the plurality of aperture blades 4, and Fig.16E In the embodiment of the present invention, the end of the shutter blade 5 moves to the position of the light inlet hole 6 to block the light inlet hole 6.

[0149] like Fig.17 , Fig.17 This is a partial exploded view of another variable aperture device in the example of the present application. In this example, the first group of aperture blades Q1 is closer to the light-entering side than the second group of aperture blades Q2, and the shutter blades 5 are arranged on the side of the first group of aperture blades Q1 close to the light-entering side. It can be considered that the shutter blades 5 are set at the top in this example.

[0150] Fig.18A , Fig.18B , Fig.18C , Fig.18D and Fig.18E The above Fig.17 In the figure, when the shutter blade 5 is placed at the top, the plurality of aperture blades 4 and the shutter blade 5 move to different positions.

[0151] Depend on FIG. 18A to FIG. 18E , the plurality of aperture blades 4 move along the P direction, so that the aperture of the light-entering hole 6 formed by them gradually decreases, and the aperture value gradually increases. Fig.18A , Fig.18B , Fig.18C and Fig.18D In the embodiment, the end of the shutter blade 5 deviates from the light inlet hole 6 formed by the plurality of aperture blades 4, and Fig.18E In the embodiment of the present invention, the end of the shutter blade 5 moves to the position of the light inlet hole 6 to block the light inlet hole 6.

[0152] In the above Fig. 12A , Fig.15 and Fig.17 In the example, a shutter blade 5 is included. The light inlet hole is blocked by the end of the shutter blade 5. Fig.19 In the embodiment, the aperture blade 41 has an N1 side surface, and the shutter blade 5 has an N2 side surface. When the shutter blade 5 and the aperture blade 41 move to reduce the aperture of the light-entering hole, the N1 side surface and the N2 side surface both move toward the center of the light-entering hole, and when the shutter blade 5 and the aperture blade 41 move to the first position (the position where the shutter blade 5 blocks the light-entering hole), the N1 side surface and the N2 side surface can be located on both sides of the center of the light-entering hole. In this way, the shutter blade 5 can block the light-entering hole.

[0153] In some other examples, more shutter blades may be included, and some possible implementation methods are given below.

[0154] like Fig. 20 , Fig. 22 and Fig.24 The three examples provided include a first shutter blade 51 and a second shutter blade 52. 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.

[0155] When the multiple aperture blades 4 move from the first position to the second position and 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, and in the second position, the first shutter blade 51 and the second shutter blade 52 both deviate from the light entrance hole.

[0156] exist Figure 20 to Figure 24 In the example shown, the movement of two shutter blades is used to block or open the light inlet. In other examples, more shutter blades may be included, such as three or four. These shutter blades are arranged at intervals along the circumference of the carrier 2, and the light inlet is blocked or not blocked by the cooperation of these shutter blades to achieve full exposure.

[0157] exist Fig. 20 In the example shown, 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 middle.

[0158] Fig.21A , Fig.21B , Fig. 21C , Fig.21D and Fig.21E The above Fig. 20 In the figure, when the first shutter blade 51 and the second shutter blade 52 are centrally arranged, a plurality of aperture blades 4, the first shutter blade 51 and the second shutter blade 52 move to different positions.

[0159] Depend on FIG. 21A to FIG. 21E , the plurality of aperture blades 4 move along the P direction, so that the aperture of the light-entering hole 6 formed by them gradually decreases, and the aperture value gradually increases. Fig.21A , Fig.21B , Fig. 21C and Fig.21D In the embodiment, the ends of the first shutter blade 51 and the second shutter blade 52 are both offset from the light inlet hole 6 and do not block the light inlet hole 6. Fig.21E In the embodiment, the ends of the first shutter blade 51 and the second shutter blade 52 both move to the position of the light inlet hole 6 and cover the light inlet hole 6 together.

[0160] like Fig. 22 , Fig. 22 This is a partial exploded view of another variable aperture device in the present application. In this example, the first group of aperture blades Q1 is closer to the light-entering side than the second group of aperture blades Q2, and the first shutter blade 51 and the second shutter blade 52 are arranged on the side of the second group of aperture blades Q2 close to the light-exiting side. It can be considered that the first shutter blade 51 and the second shutter blade 52 are arranged at the bottom.

[0161] Fig.23A , Fig. 23B , Fig.23C , Fig.23D and Fig.23E The above Fig. 22 In the figure, when the first shutter blade 51 and the second shutter blade 52 are arranged at the bottom, the plurality of aperture blades 4 and the shutter blade 5 move to different positions.

[0162] Depend on FIG. 23A to FIG. 23E , the plurality of aperture blades 4 move along the P direction, so that the aperture of the light-entering hole 6 formed by them gradually decreases, and the aperture value gradually increases. Fig.23A , Fig. 23B , Fig.23C and Fig.23D In the embodiment, the ends of the first shutter blade 51 and the second shutter blade 52 are arranged at the bottom and deviate from the light inlet hole 6 formed by the plurality of aperture blades 4. Fig.23E In the embodiment, the ends of the first shutter blade 51 and the second shutter blade 52 disposed at the bottom move to the position of the light inlet hole 6 to cover the light inlet hole 6 together.

[0163] like Fig.24 , Fig.24 This is a partial exploded view of another variable aperture device in the example of the present application. In this example, the first group of aperture blades Q1 is closer to the light-entering side than the second group of aperture blades Q2, and the first shutter blade 51 and the second shutter blade 52 are arranged on the side of the first group of aperture blades Q1 close to the light-entering side. It can be considered that the first shutter blade 51 and the second shutter blade 52 are arranged at the top in this example.

[0164] Fig.25A , Fig.25B , Fig.25C , Fig.25D and Fig.25E The above Fig.24 In the figure, when the first shutter blade 51 and the second shutter blade 52 are placed at the top, the first shutter blade 51 and the second shutter blade 52, and the plurality of aperture blades 4 move to different positions.

[0165] Depend on FIG. 25A to FIG. 25E , the plurality of aperture blades 4 move along the P direction, so that the aperture of the light-entering hole 6 formed by them gradually decreases, and the aperture value gradually increases. Fig.25A , Fig.25B , Fig.25C and Fig.25D In the embodiment, the ends of the first shutter blade 51 and the second shutter blade 52 are offset from the light-entering hole 6 formed by the plurality of aperture blades 4, and Fig.25E In the embodiment, the ends of the first shutter blade 51 and the second shutter blade 52 move to the position of the light inlet hole 6 to block the light inlet hole 6 .

[0166] See also Fig.26 , the variable aperture device includes Fig.26 When the first shutter blade 51 and the second shutter blade 52 are in the first position, when the multiple aperture blades 4 move, making the surrounded light inlet gradually 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 inlet. In the first position, the first contact surface 511 is in contact with the second contact surface 521, so that the first shutter blade 51 and the second shutter blade 52 completely block the light inlet.

[0167] On the contrary, when the multiple aperture blades 4 move to make the enclosed light entrance hole gradually larger, the first contact surface 511 of the first shutter blade 51 that blocks the light entrance hole and the second contact surface 521 of the second shutter blade 52 move away from each other until the light entrance hole is opened to achieve global exposure.

[0168] 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 hole. When the multiple aperture blades 4 move to make the surrounded light entrance hole gradually 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 hole.

[0169] In the embodiment of the present application, the shutter blade 5 is rotatably connected to the base 1, and the shutter blade 5 is slidably connected to the carrier 2; and the aperture blade 4 is rotatably connected to the base 1, and the aperture blade 4 is slidably connected to the carrier 2.

[0170] There are many ways to connect the shutter blade 5 and the aperture blade 4 to the base 1. Fig. 27 and Fig.28 An exemplary rotation method is given. Fig.28 yes Fig. 27, wherein the base body 1 is provided with a rotating shaft 81, for example, the rotating shaft 81 can be provided on the inner ring structure 102 of the base body 1. The shutter blade 5 is provided with a rotating hole 82 (which can be called a first rotating hole), and the aperture blade 41 is provided with a rotating hole 83 (which can be called a second rotating hole). The rotating shaft 81 passes through the rotating hole 82 and the rotating hole 83, and the rotating shaft 81 can rotate in the rotating hole 82 and the rotating hole 83, so that the shutter blade 5 and the aperture blade 41 are rotatably connected to the base body 1.

[0171] Fig. 27 and Fig.28 In the example shown, the shutter blade 5 and the aperture blade 41 share the same rotating shaft 81, so that the structure can be simplified and the assembly difficulty can be reduced from the perspective of the assembly process.

[0172] There are many ways to slide the shutter blade 5 and the aperture blade 4 with the carrier 2. Fig. 27 and Fig.28 An exemplary sliding method is given. A slide post 71 is provided on the carrier 2. A guide groove 72 (which may be referred to as a first guide groove) is provided on the shutter blade 5, and a guide groove 73 (which may be referred to as a second guide groove) is provided on the aperture blade 41. The slide post 71 passes through the guide groove 72 and the guide groove 73, and the slide post 71 can slide in the guide groove 72 and the guide groove 73 along the extension direction of the corresponding guide groove, so that the shutter blade 5 and the aperture blade 41 are slidably connected to the carrier 2.

[0173] Fig.29A The structure diagram of the aperture blade 41 is shown in FIG. Fig.29B The structure diagram of the shutter blade 5 is shown. Fig.29C The structure diagram shows the shutter blade 5 and the aperture blade 41 when they move until the shutter blade 5 blocks the light entrance hole.

[0174] In the present application example, when the aperture blade 41 and the shutter blade 5 move to, close to the minimum light entrance hole, the movement speed of the shutter blade 5 is greater than the movement speed of the aperture blade 41. Then, in the design, it can be adjusted Fig.29A The trajectory of the guide groove 73 is shown, and the adjustment Fig.29B The trajectory of the guide groove 72 is shown to ensure that when the plurality of aperture blades move to the minimum light intake hole, the shutter blade 5 can cover the minimum light intake hole.

[0175] Or, in other examples, you can adjust Fig.29A The shape of the aperture blades 41 is shown, or Fig.29B The shape of the shutter blade 5 is shown to ensure that when the multiple aperture blades move to the minimum light entrance hole, the shutter blade 5 can cover the minimum light entrance hole.

[0176] Continue reading Fig.29C When the plurality of aperture blades move to the minimum light entrance hole, the shutter blade 5 can block the minimum light entrance hole, and the orthographic projection of the guide groove 73 on the guide groove 72 overlaps with at least a portion of the guide groove 72 .

[0177] See also Fig.30 , Fig.30 1 is an internal circuit diagram of an electronic device 100 of the present application. The electronic device 100 further includes a controller 9. For example, the controller 9 may be disposed on a mainboard.

[0178] The controller 9 is electrically connected to the camera module 30. The controller 9 is used to receive and process electrical signals containing image information from the camera module 30. The controller 9 is also used to control the variable aperture device and the drive motor movement of the camera module 30 to achieve light input amount adjustment, AF movement and / or OIS movement of the camera module 30.

[0179] The embodiment of the present application also provides a control method of the above variable aperture device. The control method of the variable aperture device by the controller 9 includes:

[0180] A first instruction is received, where the first instruction may be a global exposure instruction.

[0181] According to the first instruction, controlling a plurality of aperture blades and a shutter blade in the variable aperture device to move to a first position;

[0182] Controlling the plurality of aperture blades and the shutter blade to move to a second position;

[0183] 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.

[0184] In this way, global exposure can be achieved by moving multiple aperture blades and shutter blades from the first position to the second position.

[0185] 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 move the multiple aperture blades and shutter blades to a first position, and a second current can be applied to the driving device to move the multiple aperture blades and shutter blades to a second position.

[0186] In addition, the control method may further include:

[0187] A second instruction is received, where the second instruction may be a target aperture value instruction.

[0188] According to the second instruction, the plurality of aperture blades and the shutter blade are controlled to move to a target position, the target position being between the first position and the second position, at which the plurality of aperture blades form a target aperture hole and the shutter blade deviates from the target aperture hole, thereby obtaining a target aperture value.

[0189] When the plurality of aperture blades and the shutter blades move to the target position, the formed light intake hole can correspond to a specific aperture value, and thus can be used as an aperture hole with a specific aperture.

[0190] In some examples, the target location includes the above Fig.14A The position shown in FIG. 1 (referred to as the third position above), that is, the position where the side edge A of the aperture blade 41 intersects the side edge B of the shutter blade 5, can also form an aperture hole of a specific aperture. In other examples, the target position may include a maximum light inlet and a Fig.14A Any position between the third position in .

[0191] 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.

[0192] In some examples, Fig.31 middle, Fig.31 1 is an exploded view of the variable aperture device according to the embodiment of the present application, wherein the variable aperture device includes a sensing magnet 11 and a Hall sensor 12, by which the moving position of the carrier 2 can be detected, and the calculation control unit 9 calculates the movement amount of the aperture blade 4 and the shutter blade 5 according to the moving position of the carrier 2, thereby controlling the current value applied to the driving device.

[0193] Continue reading Fig.31 The variable aperture device also includes a circuit board 13, and the Hall sensor 12 can be arranged on the circuit board 13, see Fig.32 , an embedding groove 202 can be opened on the carrier 2 , and the sensing magnet 11 is arranged in the embedding groove 202 .

[0194] 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.

[0195] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope 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