Imaging Module, Electronic Device, and Position Detection Method Applied to Imaging Module

Abstract

Embodiments of the present invention relate to the technical field of imaging devices, and disclose an imaging module, an electronic device, and a position detection method applied to the imaging module. 【Solution means】The imaging module includes an autofocus mechanism, a variable aperture mechanism, and an interlocking mechanism. The autofocus mechanism drives the carrier to move the lens assembly by a focus drive assembly to realize a focusing operation. When the lens assembly moves, the interlocking mechanism drives the blade drive assembly to move the light-shielding blade based on the current position of the lens assembly in the optical axis direction, and adaptively changes the shielding area of the light-shielding blade with respect to the lens assembly. In this way, it is possible to realize the interlocking of the focusing operation of the lens assembly and the aperture adjustment operation of the variable aperture mechanism, and to consistently adjust the focus of the lens assembly and the aperture of the aperture.

Description

Technical Field

[0001] Embodiments of the present invention relate to the technical field of imaging devices, and more particularly to imaging modules, electronic devices, and position detection methods applicable to imaging modules.

Background Art

[0002] A diaphragm (variable diaphragm) is used to change the amount of light entering the optical system and involved in imaging. When a diaphragm is provided in an imaging module, by adjusting the size of the diaphragm, the imaging module can meet the shooting needs in scenes with different brightness levels. The focusing mechanism realizes the focusing of the imaging module by changing the position of the lens assembly, enabling the imaging module to capture the object more clearly. By combining the use of the diaphragm and the focusing mechanism, the shooting performance of the imaging module can be improved. Therefore, applying an imaging module equipped with a diaphragm and a focusing mechanism to electronic devices such as smartphones and tablets is popular among many consumers.

[0003] The blade drive device can be applied to different optical units in a camera, such as a shutter, an aperture, or a filter, by driving a plurality of blades to move, thereby changing the size of the opening surrounded by these blades. In a conventional variable aperture, that is, the corresponding drive mechanism is provided in the lens and is located on the object side of the lens. Therefore, the counterweight on the object side of the lens becomes large, the lens is prone to tilt, and it affects the focus drive of the lens. When using a leaf spring, it is necessary to increase the hardness of the leaf spring to support the lens provided with the variable aperture. Even when not using a leaf spring, the focus mechanism needs to provide a similar holding force. In addition, it is necessary to provide electrical wiring inside to drive the variable aperture, and it is necessary to ensure that the electrical wiring does not affect the focus. For this reason, the overall design of the invention becomes difficult. Furthermore, when the lens moves due to the drive of the focus mechanism, the distance between the lens and the aperture changes, and the viewable angle of the lens with respect to the aperture opening changes. Therefore, the user needs to adjust the aperture again.

[0004] Therefore, in the art, there is a need for a new imaging module to solve one or more of the above technical problems.

Summary of the Invention

Problems to be Solved by the Invention

[0005] An embodiment of the present invention aims to provide an imaging module, an electronic device, and a position detection method applicable to the imaging module that can interlock the focusing operation of the lens assembly and the aperture adjustment operation of the aperture to consistently adjust the focusing of the lens assembly and the aperture opening.

Means for Solving the Problems

[0006] To solve the above technical problems, in a first aspect of the present invention, an imaging module is provided, which includes a lens assembly, an autofocus mechanism, a variable aperture mechanism, and an interlocking mechanism. Here, the autofocus mechanism includes a carrier and a focus drive assembly. The carrier is externally fitted and fixed to the outer periphery of the lens assembly so as to support the lens assembly. The focus drive assembly is used to move the lens assembly along the optical axis of the lens assembly by driving the carrier. The variable aperture mechanism includes a blade support member, a light-shielding blade, and a blade drive assembly. The blade support member, the light-shielding blade, and the blade drive assembly are all located on the object side of the lens assembly. The blade support member and the lens assembly are coaxially installed. The light-shielding blade is located between the blade support member and the blade drive assembly. The blade support member has a positioning hole, and the light-shielding blade has a positioning portion. The positioning portion extends rotatably into the positioning hole. The light-shielding blade is rotatable about the positioning portion. When the focus drive assembly drives the carrier to move the lens assembly, the interlocking mechanism drives the blade drive assembly to move the light-shielding blade, so as to adaptively change the shielding area of the light-shielding blade with respect to the lens assembly.

[0007] In some embodiments, the interlocking mechanism includes a driver that electrically connects the focus drive assembly and the blade drive assembly. The driver detects the position of the carrier by the focus drive assembly and controls the blade drive assembly to move the light-shielding blade based on the position of the carrier.

[0008] In some embodiments, the focus drive assembly includes a first drive member and a first position detection element. The first position detection element is electrically connected to the driver. The first drive member is used to drive the carrier to move along the optical axis. The driver detects the position of the carrier by the first position detection element and controls the blade drive assembly to move the light-shielding blade based on the position of the carrier.

[0009] In some embodiments, the blade drive assembly includes a second drive member, a blade driven ring, and a second position detection element. The second drive member is located between the light-shielding blade and the lens assembly. The blade driven ring is located between the light-shielding blade and the second drive member. The light-shielding blade is slidably connected to the blade driven ring. The second position detection element is electrically connected to the driver. The second drive member is used to drive the blade driven ring to move the light-shielding blade. The driver detects the position of the blade driven ring by the second position detection element and controls the second drive member to move the light-shielding blade based on the position of the blade driven ring.

[0010] In some embodiments, the driver further includes a blade control module. The focus drive assembly includes a first drive member and a first position detection element. The first position detection element is electrically connected to the blade control module. The blade drive assembly is electrically connected to the blade control module. The first drive member is used to drive the carrier to move along the optical axis. The blade control module detects the position of the carrier by the first position detection element and controls the blade drive assembly to move the light-shielding blade based on the position of the carrier.

[0011] In some embodiments, the blade driving assembly includes a second driving member, a blade driven ring, and a second position detecting element. The second driving member is located between the light-shielding blade and the lens assembly. The blade driven ring is located between the light-shielding blade and the second driving member. The light-shielding blade is slidably connected to the blade driven ring. The second driving member and the second position detecting element are electrically connected to the blade control module. The second driving member is used to drive the blade driven ring to move the light-shielding blade. The blade control module detects the position of the blade driven ring by the second position detecting element and controls the second driving member to move the light-shielding blade based on the rotation angle of the blade driven ring.

[0012] In some embodiments, the linkage mechanism further includes a first position controller and a second position controller. The first position controller is provided on the carrier. The focus driving assembly includes a first driving member located on the image side of the carrier. The blade driving assembly includes a second driving member. The second position controller is provided on the second driving member. Both the first position controller and the second position controller are electrically connected to the driver. The first driving member is used to drive the carrier to move along the optical axis. The second driving member is used to drive the light-shielding blade to move. The first position controller and the second position controller identify the current position of the lens assembly by detecting their relative positions. The driver controls the blade driving assembly to move the light-shielding blade based on the current position of the lens assembly.

[0013] In some embodiments, the blade drive assembly includes a mounting ring, a second drive member, and a blade driven ring. The mounting ring is located between the light-shielding blade and the lens assembly. The second drive member is located between the light-shielding blade and the mounting ring. The blade driven ring is located between the light-shielding blade and the second drive member. The light-shielding blade is slidably connected to the blade driven ring. The second drive member is electrically connected to the driver. The second position controller is provided on the mounting ring. When the lens assembly moves along the optical axis, the first position controller and the second position controller detect their relative positions in the respective optical axis directions.

[0014] In some embodiments, the linkage mechanism further includes a first position controller and a second position controller. The first position controller is provided on the carrier. The focus drive assembly includes a first drive member located on the image side of the carrier. The blade drive assembly includes a second drive member. The second position controller is provided on the second drive member. Both the first position controller and the second position controller are electrically connected to the second drive member. The first drive member is used to drive the carrier to move along the optical axis. The second drive member is used to drive the light-shielding blade to move. The first position controller and the second position controller identify the current position of the lens assembly by detecting their relative positions. The second drive member is driven to move the light-shielding blade based on the current position of the lens assembly.

[0015] In some embodiments, the blade drive assembly includes a blade driven ring located between the light-shielding blade and the lens assembly. The linkage mechanism includes an abutting portion provided on a side of the blade driven ring facing the lens assembly. The lens assembly includes a lens assembly housing, and the linkage mechanism further includes a protrusion provided on a side of the lens assembly housing facing the blade driven ring. The protrusion abuts against the abutting portion. When the focus drive assembly drives the lens assembly to move towards the blade driven ring, the protrusion drives the abutting portion to rotate the blade driven ring, thereby increasing the shielding area of the light-shielding blade with respect to the lens assembly.

[0016] In some embodiments, the abutting portion has an inclined surface, and the protrusion abuts against the inclined surface. When the lens assembly is driven to move the protrusion towards the blade driven ring, the protrusion presses the inclined surface to drive the abutting portion to rotate the blade driven ring.

[0017] In some embodiments, the blade drive assembly further includes a second driven member and a blade angle holding member. The second driven member is provided on the blade driven ring, and the blade angle holding member is installed opposite to the second driven member. When the focus drive assembly drives the lens assembly to move away from the blade driven ring, the blade angle holding member drives the second driven member to rotate the blade driven ring, thereby reducing the shielding area of the light-shielding blade with respect to the lens assembly.

[0018] In some embodiments, the focus driving assembly includes a first driving member and a first driven member. The first driven member is a first coil provided to be wound around the outer periphery of the carrier. The first driving member is a plurality of first magnets that surround the first coil and are spaced apart on the outside of the first coil. When the first coil is energized, the first magnets drive the first coil to move the carrier along the optical axis. The blade driving assembly includes a second driving member, a blade driven ring, and a second driven member. The blade driven ring is provided between the light shielding blades and the lens assembly. The light shielding blades are slidably connected to the blade driven ring. The second driven member is a plurality of second magnets that surround the optical axis and are fixed to the blade driven ring with a space therebetween. The second driving member is a plurality of second coils that surround the optical axis and are spaced apart. When the second coils are energized, they drive the second magnets to rotate the blade driven ring.

[0019] In some embodiments, the autofocus mechanism further includes a zoom assembly. The zoom assembly is used to drive the focus driving assembly and the carrier to move along the optical axis to achieve zooming.

[0020] In some embodiments, the imaging module further includes an anti-shake mechanism and a sensor assembly provided on the anti-shake mechanism. The anti-shake mechanism is located on the image side of the autofocus mechanism. The anti-shake mechanism is used to drive the sensor assembly to move to achieve anti-shake. Alternatively, the imaging module further includes an optical path folding mechanism provided between the variable aperture mechanism and the autofocus mechanism. The optical path folding mechanism is used to fold the optical path.

[0021] In a second aspect of the present invention, an electronic device is provided. The electronic device includes a device body and the imaging module according to any one of the above, and the imaging module is provided on the device body.

[0022] In a third aspect of the present invention, a position detection method applied to an imaging module is provided. This position detection method includes: The first position detection element detects the position of the carrier in the optical axis direction of the carrier, and transmits a first electrical signal carrying the position information of the carrier to the driver. The second position detection element detects the position of the blade-driven ring in a direction perpendicular to the optical axis of the blade-driven ring, and transmits a second electrical signal carrying the position information of the blade-driven ring to the driver. The driver receives the first electrical signal and the second electrical signal, and determines whether the position information of the carrier corresponds to the position information of the blade-driven ring based on a preset correspondence relationship. When they correspond, the driver transmits a first control signal to the blade drive assembly, and the blade drive assembly receives the first control signal and drives the blade-driven ring to maintain its current position. When they do not correspond, the driver transmits a second control signal to the blade drive assembly, and the blade drive assembly receives the second control signal and drives the blade-driven ring to move the light-shielding blade.

[0023] In some embodiments, the first position detection element detecting the position of the carrier in the optical axis direction of the carrier specifically means that a first position detection magnet is provided on the carrier, the first position detection element is a Hall element, and the first position detection element detects the position of the carrier by detecting the change in magnetic flux of the magnetic field of the first position detection magnet in the first position detection element.

[0024] In some embodiments, the detection of the position of the second position detection element in the direction perpendicular to the optical axis of the blade-driven ring specifically includes providing a second position detection magnet on the blade-driven ring, where the second position detection element is a Hall element, and the second position detection element detects the position of the blade-driven ring by detecting the change in the magnetic flux of the magnet in the second position detection element of the second position detection magnet.

[0025] In a fourth aspect of the present invention, a position detection method applied to an imaging module is provided. This position detection method includes: A first position controller detects the position of a second position controller, the second position controller detects the position of the first position controller, and the first position controller and / or the second position controller determines whether the relative position between them has changed. If it has changed, the first position controller and / or the second position controller sends a first control signal to a blade drive assembly, and the blade drive assembly receives the first control signal and drives the blade-driven ring to move the light-shielding blade. If it has not changed, the first position controller and / or the second position controller sends a second control signal to the blade drive assembly, and the blade drive assembly receives the second control signal and drives the blade-driven ring to maintain its current position.

Advantages of the Invention

[0026] In an embodiment of the present invention, compared with the prior art, the imaging module includes an autofocus mechanism, a variable aperture mechanism, and an interlocking mechanism. The autofocus mechanism drives the carrier to move the lens assembly by a focus drive assembly to realize a focusing operation. When the lens assembly moves, the interlocking mechanism drives the blade drive assembly to move the light-shielding blade based on the current position of the lens assembly in the optical axis direction, and adaptively changes the shielding area of the light-shielding blade with respect to the lens assembly. In this way, it is possible to realize the interlocking of the focusing operation of the lens assembly and the aperture adjustment operation of the variable aperture mechanism, and to consistently adjust the focus of the lens assembly and the aperture of the diaphragm.

Brief Description of the Drawings

[0027] One or more embodiments are illustratively described in the figures in the corresponding accompanying drawings. These illustrative descriptions do not limit the embodiments. Components denoted by the same reference numerals in the accompanying drawings are represented as similar components. Unless otherwise specified, the figures in the accompanying drawings are not limited by scale.

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Explanation of Reference Numerals

[0028] 1... Lens assembly 11... Lens assembly housing 2... Autofocus mechanism 21... Carrier 22... Focus drive assembly 221... First magnet 222... First coil 223... Mount 224... First energization substrate 225... First position detection element 226... Front case 23... Leaf spring 24... Zoom assembly 241... Zoom mechanism for barrel retraction 3... Variable aperture mechanism 31... Blade support member 311... Positioning hole 32... Light-shielding blade 321... Positioning portion 322... Sliding portion 33... Blade drive assembly 331... Second coil 332... Blade follower ring 3321... Shoot 333... Second magnet 334... Mounting ring 335... Second energization substrate 336... Second position detection element 337... Blade angle holding member 4... Linkage mechanism 41... Driver 411... Blade control module 42... First position controller 43... Second position controller 44... Contact portion 441... Inclined surface 45... Protrusion 5... Shake correction mechanism 51... Rear case 6... Optical path folding mechanism 100... Imaging module 200... Electronic device 210... Device body

Best Mode for Carrying Out the Invention

[0029] To make the objectives, technical concepts, and advantages of the embodiments of the present invention clearer, each embodiment of the present invention will be described in detail below with reference to the drawings. However, in each embodiment of the present invention, for the readers to better understand the present invention, many technical details are described. However, it is obvious to those skilled in the art that the technical solution to be protected by the present invention can be realized even without these technical details and various changes and corrections based on the following embodiments.

[0030] In the embodiments of the present invention, the orientation or positional relationship indicated by terms such as "up", "down", "left", "right", "front", "rear", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral direction", "longitudinal direction", etc. is the orientation or positional relationship shown based on the drawings. These terms are mainly for better explaining the present invention and its embodiments, and are not used to limit that the indicated device, unit, or component must have a specific orientation or be configured and operated in a specific orientation.

[0031] In addition, some of the above terms can also be used to represent other meanings in addition to representing orientation or positional relationships. For example, the term "above" can also be used to represent a dependency or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the present invention can be understood according to the specific situation.

[0032] Furthermore, the terms "attach", "install", "provided", "open", "connect", "be connected" should be understood in a broad sense. For example, it may be a fixed connection, a removable connection, or an integral structure, it may be a mechanical connection or an electrical connection, it may be directly connected, or it may be indirectly connected through an intermediate medium, or it may be an internal communication between two devices, units or components. For those skilled in the art, the specific meaning of the above terms in the present invention can be understood according to the specific situation.

[0033] Furthermore, terms such as "first", "second", etc. are mainly not for explicitly or implicitly indicating the relative importance and quantity of the indicated devices, units or components, but are used to distinguish different devices, units or components (the specific types and configurations may be the same or different). Unless otherwise specified, "a plurality" means two or more.

[0034] Hereinafter, the implementation details of the imaging module, the electronic device of the present invention, and the position detection method applied to the imaging module will be specifically described. The following content is for the purpose of making the provided implementation details easier to understand and is not essential for implementing the present invention.

[0035] As shown in FIGS. 1 to 4, the imaging module 100 according to Embodiment 1 of the present invention includes a lens assembly 1, an autofocus mechanism 2, a variable aperture mechanism 3, and an interlocking mechanism 4. Here, the autofocus mechanism 2 includes a carrier 21 and a focus drive assembly 22. The carrier 21 is externally fitted and fixed to the outer periphery of the lens assembly 1 so as to support the lens assembly 1. The focus drive assembly 22 moves the lens assembly 1 along the optical axis L by driving the carrier 21. The variable aperture mechanism 3 includes a blade support member 31, a light-shielding blade 32, and a blade drive assembly 33. The blade support member 31, the light-shielding blade 32, and the blade drive assembly 33 are all located on the objective side of the lens assembly. The blade support member 31 and the lens assembly 1 are coaxially installed. The light-shielding blade 32 is located between the blade support member 31 and the blade drive assembly 33. The blade support member 31 has a positioning hole 311, and the light-shielding blade 32 has a positioning portion 321. The positioning portion 321 extends rotatably into the positioning hole 311, and the light-shielding blade 32 is rotatable about the positioning portion 321. When the focus drive assembly 22 drives the carrier 21 to move the lens assembly 1, the interlocking mechanism 4 drives the blade drive assembly 33 to move the light-shielding blade 32, thereby adaptively changing the shielding area of the light-shielding blade 32 with respect to the lens assembly 1.

[0036] By installing in this way, the focusing operation of the autofocus mechanism 2 with respect to the lens assembly 1 and the aperture adjustment operation of the variable aperture mechanism 3 can be interlocked to consistently adjust the focus and aperture of the lens assembly.

[0037] In this embodiment, the lens assembly 1 is supported by the carrier 21 by a leaf spring 23.

[0038] In this embodiment, the focus driving assembly 22 includes a first driving member and a first driven member. The first driven member is provided on the carrier 21, the first driving member is disposed opposite to the first driven member, the first driving member is fixed, and the first driving member is used to drive the first driven member to move along the optical axis L to move the lens assembly 1.

[0039] Furthermore, the focus driving assembly 22 includes a mount 223. The mount 223 surrounds the carrier 21 and is provided outside the carrier 21. The carrier 21 is movable along the optical axis l with respect to the mount 223, and the first driving member is fixed to the mount 223.

[0040] In some embodiments, the first driving member is a plurality of first magnets 221, the first driven member is a first coil 222 provided to be wound around the outer periphery of the carrier 21, and the plurality of first magnets 221 surround the carrier 21 and are spaced apart and disposed outside the first coil 222. When an electric current is passed through the first coil 222, the magnetic field generated in the first coil 222 and the magnetic field of the first magnet 221 itself act on each other. Since the first magnet 221 is fixed to the mount 223, the first coil 222 is affected by the interaction of the magnetic fields and moves along the optical axis L. Furthermore, the carrier 21 and the lens assembly 1 are moved along the optical axis. By changing the direction of the current flowing through the first coil 222, the moving direction of the lens assembly 1 can be changed. By changing the magnitude of the current flowing through the first coil 222, the moving distance of the lens assembly 1 in the optical axis direction can be changed.

[0041] As can be understood, the plurality of first magnets 221 may surround the carrier 21 and be fixed at intervals on the outer periphery of the carrier 21, and the first coil 222 may surround the plurality of first magnets 221 and be wound around the inside or the outer periphery of the mount 223. It is necessary to maintain a certain interval between the first magnet 221 and the first coil 222, that is, to exchange the positions of the first magnet 221 and the first coil 222. In this case, the first driving member is the first coil 222, and the first driven member is the first magnet 221.

[0042] In this embodiment, the focus drive assembly 22 further includes a first energization substrate 224, the first coil 222 is electrically connected to the first energization substrate 224, and the first energization substrate 224 is used to supply power to the first coil 222.

[0043] Furthermore, the focus drive assembly 22 includes a first position detection element 225 provided on the mount 223. The first energization substrate 224 is electrically connected to the first position detection element 225. The first position detection element 225 is used to detect the position of the carrier 21 and identify the current position of the lens assembly 1 in the focusing operation.

[0044] In some embodiments, the first position detection element 225 is a Hall element, and a magnetic member 211 is provided on the carrier 21. When the carrier 21 moves along the optical axis l, the magnetic member 211 moves relative to the mount 223. The magnetic member 211 causes a change in the magnetic field at the location of the Hall element, and the Hall element detects such a change in the magnetic field to detect the position of the magnetic member 211 and identify the position of the lens assembly 1.

[0045] In this embodiment, the focus drive assembly 22 further includes a front case 226, the imaging module 100 includes a rear case 51, the front case 226 and the rear case 51 house the remaining members of the focus drive assembly 22 in a space surrounded by both, and fix the mount 223.

[0046] In this embodiment, the blade drive assembly 33 includes a second drive member and a blade driven ring 332. The second drive member is provided between the light-shielding blade 32 and the lens assembly 1, and the blade driven ring 332 is provided between the light-shielding blade 32 and the second drive member. Driving the second drive member moves the light-shielding blade 32 by driving the blade driven ring 332, thereby changing the shielding area of the light-shielding blade 32 with respect to the lens assembly 1. Specifically, the blade drive assembly 33 further includes a second driven member fixed to the blade driven ring 332, and the second drive member drives the blade driven ring 332 and the light-shielding blade 32 by driving the second driven member.

[0047] In some embodiments, the blade drive assembly 33 further includes a mounting ring 334 provided between the blade driven ring 332 and the lens assembly 1, the blade driven ring 332 being rotatable relative to the mounting ring 334, the second drive member being the second coil 331, and the second driven member being the second magnet 333. One or more second coils 331 are distributed surrounding the optical axis L and are fixed to or spaced apart and fixed to the mounting ring 334, and one or more second magnets 333 are distributed surrounding the optical axis and are fixed to or spaced apart and fixed to the blade driven ring 332, and the second magnets 333 and the second coils 331 are arranged opposite to each other. Also, when the number of the second magnets 333 and the second coils 331 is the same, the second magnets 333 and the second coils 331 are arranged opposite to each other in a one-to-one correspondence. As shown in FIG. 5, here, the dotted curved arrow is the current direction, the dotted straight arrow is the direction in which the second magnet 333 receives the force, and the solid curved arrow is the rotation direction of the blade driven ring 332. Taking the second coil 331 located above as an example, when a counterclockwise current flows through the second coil 331, the magnetic field generated in the second coil 331 and the magnetic field of the second magnet 333 itself act on each other, and the second magnet 333 moves along the direction in which it receives the force, and different second magnets 333 are affected by the second coil 331 corresponding to their positions. When these forces act together, the blade driven ring 332 is rotated clockwise with the optical axis L as the rotation axis by these second magnets 333, and thus the light shielding blade 32 is driven to move by the blade driven ring 332. In this way, by changing the direction of the current flowing through the second coil 331, the direction in which these second magnets 333 receive the force can be changed, and the rotation direction of the blade driven ring 332 can be changed. When the blade driven ring 332 moves along a certain direction, the shielding area of the light shielding blade 32 with respect to the lens assembly 1 can be increased. When the blade driven ring 332 rotates along other directions, the shielding area of the light shielding blade 32 with respect to the lens assembly 1 can be reduced.

[0048] As can be understood, by changing the magnitude of the current flowing through the second coil 331, the magnitude of the force received by the second magnet 333 can be changed, and the magnitude of the angle by which the blade driven ring 332 rotates can be changed.

[0049] In some other embodiments, the second driving member may be the second magnet 333, and the second driven member may be the second coil 331, that is, the positions of the second coil 331 and the second magnet 333 may be exchanged with each other.

[0050] As shown in FIGS. 6 to 10, in the present embodiment, the light-shielding blade 32 is provided with a positioning portion 321 on the side facing the blade support member 31, and a sliding portion 322 is provided on the side facing the blade driven ring 332. The blade support member 31 has a positioning hole 311, and the blade driven ring 332 is provided with a chute 3321. The positioning portion 321 extends into the positioning hole 311, and the sliding portion 322 extends into the chute 3321 and is slidable in the chute 3321. When the blade driven ring 332 rotates, the sliding portion 322 is restricted by the inner wall of the chute 3321 and slides into the chute 3321 while following the rotation of the blade driven ring 332. Since the positioning portion 321 extends into the positioning hole 311 and is restricted by the positioning hole 311, the positioning portion 321 rotates with respect to the blade support member 31 but its position does not change, and the entire light-shielding blade 32 moves within a plane perpendicular to the optical axis L. Further, the chute 3321 extends along the radial direction of the blade driven ring 332. In the present invention, "being slidably connected" between the sliding portion 322 and the blade driven ring 332 means that the sliding portion 322 rotates about the positioning portion 321 as a pivot axis by the action of the chute 3321 of the blade driven ring 332, and at the same time as rotating, the sliding portion 322 slides into the chute 3321 with respect to the blade driven ring 332.

[0051] Note that the projections of the positioning portion 321 and the sliding portion 322 in the extending plane of the light-shielding blade 32 do not overlap, that is, the two are arranged offset. Further, the positioning portion 321 is usually provided at one end of the light-shielding blade 32, and the sliding portion 322 may be provided at the other end or the middle portion of the light-shielding blade 32.

[0052] As shown in FIGS. 11 and 12, more specifically, there are a plurality of light-shielding vanes 32. The plurality of light-shielding vanes 32 are arranged at intervals surrounding the optical axis L. The plurality of light-shielding vanes 32 are arranged at intervals along the circumferential direction of the vane driven ring 332, and any adjacent light-shielding vanes 32 are arranged overlapping each other. For example, for one light-shielding vane 32, one end provided with the positioning portion 321 is located on the image side of the light-shielding vane 32 adjacent to this end, and one end provided with the sliding portion 322 is located on the object side of the light-shielding vane 32 adjacent to this end. The same applies to the other light-shielding vanes 32. Accordingly, a plurality of positioning holes 311 are arranged at intervals along the circumferential direction on the vane support member 31, and a plurality of shoots 3321 are provided along the circumferential direction on the vane driven ring 332.

[0053] As can be understood, the plurality of light-shielding vanes 32 surround the optical axis L to form a through hole. When these light-shielding vanes 32 move, the size of the through hole also changes, changing the exposed area of the lens assembly 1 and changing the light beam of the variable aperture mechanism 3.

[0054] As an option, the light-shielding vane 32 may be in the shape of an arc sheet, and the inner edge surrounding the above through hole of the light-shielding vane 32 is an arc-shaped edge, and the outer edge may be an edge of other shapes.

[0055] In this embodiment, the vane support member 31 is provided with a cylindrical concave groove. A circular through hole coaxial with the lens assembly 1 is opened at the bottom of this cylindrical concave groove. The vane driven ring 332 and this cylindrical concave groove together form a vane chamber for accommodating the above light-shielding vanes 32. More specifically, the vane support member 31 is a vane cover, the vane cover is fixed to the front case 226, and the space formed by the vane cover and the front case 226 accommodates the vane drive assembly 33.

[0056] In this embodiment, a second energization substrate 335 is provided on the mounting ring 334. The second energization substrate 335 is electrically connected to all the second coils 331 provided on the above-mentioned mounting ring 334 and is used to supply power to these second coils 331. Further, a second position detection element 336 electrically connected to the second energization substrate 335 is provided on the mounting ring 334. The second position detection element 336 is a Hall element. By detecting the position of one magnet in the blade driven ring 332, the position of the blade driven ring 332 after rotation can be specified, the rotation angle of the blade driven ring 332 can be obtained, and the change in the aperture of the variable aperture can be obtained by calculation.

[0057] As shown in FIG. 13, in this embodiment, the linkage mechanism 4 includes a driver 41 that electrically connects the focus drive assembly 22 and the blade drive assembly 33. Here, the focus drive assembly 22 can detect the position of the carrier 21. When the focus drive assembly 22 drives the carrier 21 to move the lens assembly 1, the focus drive assembly 22 detects the position of the carrier 21 to specify the current position of the lens assembly 1, transmits the current position of the lens assembly 1 to the driver 41, and the driver 41 controls the blade drive assembly 33 based on the current position of the lens assembly 1. The blade drive assembly 33 drives the blade driven ring 332 to move the light shielding blade 32.

[0058] Specifically, the driver 41 electrically connects the first coil 222 and the first position detection element 225 of the focus drive assembly 22, uses the first position detection element 225 to detect the position of the carrier 21, and specifies the current position of the lens assembly 1.

[0059] More specifically, the driver 41 further electrically connects the second coil 331 and the second position detection element 336 of the blade drive assembly 33. When the focus drive assembly 22 drives the lens assembly 1 to move, the first position detection element 225 transmits the detected position information of the lens assembly 1 (i.e., the current position after movement) to the driver 41, and the second position detection element 336 detects the position information of the blade-driven ring 332 before rotation and transmits it to the driver 41. After receiving the position information of the lens assembly 1, the driver 41 combines it with the position of the blade-driven ring 332 before rotation, and obtains, through calculation, the change in the rotation angle of the blade-driven ring 332 corresponding to the change in the position of the lens assembly 1. Then, a current along the position control information is applied to the second coil 331 of the blade drive assembly 33, and the second coil 331 is driven to rotate the blade-driven ring 332 so that the size of the viewing angle of the lens assembly 1 formed by the aperture opening before and after focusing does not change. Further, the second position detection element 336 can detect the position of the blade-driven ring 332 after rotation and feedback it to the driver 41. Since the driver 41 can further determine whether the position of the blade-driven ring 332 after rotation meets the requirements, the position of the blade-driven ring 332 can be corrected in a timely manner.

[0060] As can be understood, the correspondence between the distance moved along the optical axis L of the lens assembly 1 and the change in the magnitude of the rotation angle of the blade-driven ring 332, and the correspondence between the change in the rotation angle of the blade-driven ring 332 and the aperture opening are both related to the shapes and dimensions of the above-mentioned members. Therefore, the specific correspondence can be set and arranged by setting the shapes and dimensions of these members according to the needs, and will not be specifically described here.

[0061] As shown in FIG. 14, in some other embodiments, the driver 41 can further include a blade control module 411. The first position detection element 225 described above electrically connects to the blade control module 411, and the second coil 331 and the second position detection element 336 of the blade drive assembly 33 electrically connect to the blade control module 411. The blade control module 411 detects the position change of the lens assembly 1 before and after focusing by the first position detection element 225, and detects the position of the blade driven ring 332 by the second position detection element 336. Then, in response to this position change, in combination with the position of the blade driven ring 332, a control signal is sent to the blade drive assembly 33 to drive the blade driven ring 332 to rotate. Similarly, the blade control module 411 can also correct the position of the blade driven ring 332 based on the rotated position of the blade driven ring 332 detected by the second position detection element 336.

[0062] As shown in FIG. 15, in some other embodiments, the linkage mechanism 4 further includes a first position controller 42 and a second position controller 43. Both the first position controller 42 and the second position controller 43 are electrically connected to the driver 41. The first position controller 42 may be provided on the carrier 21, and the second position controller 43 may be provided on the mounting ring 334. The first position controller 42 and the second position controller 43 are for detecting their respective relative position changes. After the driver 41 receives the monitoring information of the first position controller 42 and the second position controller 43, the current position of the lens assembly 1 is identified based on this information, and a control signal is sent to the blade drive assembly 33 to drive the blade drive assembly 33 to drive the blade driven ring 332 to rotate. Alternatively, the second position controller 43 may be provided on the blade driven ring 332.

[0063] In some embodiments, the autofocus mechanism 2 further includes a zoom assembly 24. The zoom assembly 24 is used to drive the focus drive assembly 22 and the carrier 21 to move along the optical axis to achieve zooming. Optionally, the zoom assembly 24 may include a retractable zoom mechanism 241. The above focus drive assembly 22 is mounted on the retractable zoom mechanism 241. By retracting the retractable zoom mechanism 241, a change in the focal length of the imaging module 100 can be realized. Alternatively, the zoom assembly 24 may be a method of zooming at a fixed position. For example, it is applied to a zoom lens. There are various options for the zoom lens, such as a liquid lens with force-induced deformation, a mechanically-force-driven flexible zoom lens (film lens), an electromagnetic-driven zoom lens, a flexibly-zoomed lens with electro-induced deformation, and a flexibly-zoomed lens with electroactive polymer.

[0064] As shown in FIGS. 16 and 17, in some embodiments, the imaging module 100 further includes an anti-shake mechanism 5 and a sensor assembly (not shown) provided in the anti-shake mechanism. The anti-shake mechanism 5 is located on the image side of the autofocus mechanism 2 and is used to drive the sensor assembly to move to achieve anti-shake. As can be understood, the sensor assembly mainly refers to an optical sensor for imaging. Alternatively, the imaging module 100 further includes an optical path folding mechanism 6 provided between the variable aperture mechanism 3 and the autofocus mechanism 2. The optical path folding mechanism 6 is used to fold the optical path. By the optical path folding mechanism 6, a miniaturized design of the imaging module 100 in a certain dimension is possible, and a periscope telescope design is also possible. As can be understood, the anti-shake mechanism 5 includes the above rear case 51.

[0065] As shown in FIG. 18, in Embodiment 2 of the present invention, an imaging module 100 is provided. The imaging module 100 of this embodiment is substantially the same as the imaging module 100 of Embodiment 1. The main difference between them is that the first position controller 42 of this embodiment is electrically connected to the coil of the focus drive assembly 22, and the second position controller 43 is electrically connected to the coil of the blade drive assembly 33. The first position controller 42 and the second position controller 43 respectively detect the positions of the assemblies, and apply a current to the coil of the blade drive assembly 33 based on the corresponding position information, so as to realize the consistent adjustment of the focus and aperture of the lens.

[0066] As shown in FIGS. 19 and 20, in Embodiment 3 of the present invention, an imaging module 100 is provided. The imaging module 100 of this embodiment is substantially the same as the imaging module 100 of Embodiment 1. The main difference between them is that in this embodiment, the consistent adjustment of the focus and aperture of the lens is realized by the interlock through physical connection.

[0067] Specifically, the interlock mechanism 4 includes a contact portion 44 provided on the side of the blade driven ring 332 facing the lens assembly 1. The lens assembly 1 includes a lens assembly housing 11. The interlock mechanism 4 further includes a protrusion 45 provided on the side of the lens assembly housing 11 facing the blade driven ring 332. The contact portion 44 is in contact with the protrusion 45. When the focus drive assembly 22 drives the lens assembly 1 to move toward the blade driven ring 332, the protrusion 45 drives the contact portion 44 to rotate the blade driven ring 332, and the blade driven ring 332 moves the light shielding blades 32 to reduce the aperture.

[0068] As can be understood, when the lens assembly 1 is in the initial position away from the blade-driven ring 332, the protrusion 45 and the contact portion 44 may just come into contact, that is, there is no mutual acting force between them. Alternatively, there may be a certain acting force between them. At this time, the aperture of the diaphragm is maximized. When the focus drive assembly 22 drives the lens assembly 1 to move toward the blade-driven ring 332, the protrusion 45 drives the contact portion 44 to rotate the blade-driven ring 332, and accordingly the aperture of the diaphragm becomes smaller, ensuring that the viewing angle before and after focusing of the lens assembly 1 remains unchanged.

[0069] In this embodiment, the contact portion 44 is provided with an inclined surface 441, and the protrusion 45 is in contact with the inclined surface 441. When the lens assembly 1 is driven to move the protrusion 45 toward the blade-driven ring 332, the protrusion 45 presses the inclined surface 441 to drive the contact portion 44 to rotate the blade-driven ring 332. In order to make the protrusion 45 and the inclined surface 441 cooperate better, the end surface of the protrusion 45 facing the blade-driven ring 332 can be set to a spherical or quasi-spherical curved surface. Furthermore, by setting a high surface accuracy, the frictional force between the protrusion 45 and the inclined surface 441 can be reduced. For example, the roughness of the end surface of the inclined surface 441 and the protrusion 45 can be reduced.

[0070] In this embodiment, the blade drive assembly 33 further includes a blade angle holding member 337. The second driven member is provided on the blade-driven ring 332, and the blade angle holding member 337 is installed opposite to the second driven member. When the focus drive assembly 22 drives the lens assembly 1 to move away from the blade-driven ring 332, the blade angle holding member 337 drives the second driven member to rotate the blade-driven ring 332, reducing the shielding area of the light-shielding blade 32 with respect to the lens assembly.

[0071] As shown in FIG. 21, specifically, the blade angle holding member 337 may be a yoke. The blade angle holding member 337 is provided on the blade support member 31 or the mounting ring 334, and is installed facing the second magnet 333 in the blade driven ring 332. For example, it is installed facing the second magnet 333 located directly above in the blade driven ring 332. There is an attractive force F between the yoke and this second magnet 333, and due to this attractive force, the blade driven ring 332 is held in the initial position. When the lens assembly 1 moves toward the blade driven ring 332, when the protrusion 45 presses the contact portion 44, it is necessary to overcome the action of the attractive force between the yoke and this second magnet 333, so it is necessary to rotate the blade driven ring 332 to reduce the aperture opening. On the other hand, in the process of resetting the lens assembly 1 to the initial position, since the protrusion 45 does not apply force to the contact portion 44, the blade driven ring 332 can be reset to the initial position by the attractive force between the yoke and this second magnet 333, that is, the original large aperture of the aperture can be restored. Note that in this interlocking mode, regardless of how the focus drive assembly 22 drives and moves the lens assembly 1, the viewing angle formed by the lens assembly 1 with respect to the aperture opening is always kept constant.

[0072] As can be understood, when it is necessary to change the viewing angle of the lens assembly 1 with respect to the aperture opening, the light shielding blade 32 can be controlled by the blade drive assembly 33. Of course, when the lens assembly 1 moves toward the blade driven ring 332, it is restricted by the contact portion 44 and the protrusion 45, so the aperture opening can only be reduced. When the lens assembly 1 moves toward the initial position, the protrusion 45 does not apply force to the contact portion 44. When it is necessary to make the aperture opening constant or smaller, the blade drive assembly 33 can overcome the action of the attractive force between the yoke and the second magnet 333 to realize the adjustment of the aperture opening, and can meet the needs of more shooting modes.

[0073] In other embodiments, the blade angle holding member 337 may be a magnet or a magnetic fluid sealed and fixed to the blade support member 31 or the mounting ring 334 with a seal member. As shown in FIG. 22, when the blade angle holding member 337 is a magnet, the directions of different magnetic poles of the blade angle holding member 337 are opposite to the directions of different magnetic poles of the second magnet 333. For example, the S pole of the magnet of the blade angle holding member 337 should face the N pole of the magnet of the second magnet 333, and the N pole of the magnet of the blade angle holding member 337 should face the S pole of the magnet of the second magnet 333.

[0074] As can be seen from the above embodiments, by combining the front case 226 and the rear case 51, the lens assembly 1 and the autofocus mechanism 2 are installed as a whole, and the variable aperture mechanism 3 has a structure independent of the autofocus mechanism 2. At the same time, through physical or electromagnetic cooperation, the focusing operation and the adjustment operation of the aperture opening are interlocked, so that when the imaging module 100 focuses, the field of view provided by the aperture can be corrected synchronously, and the driving difficulty of focusing and aperture adjustment is reduced. In addition, since the variable aperture mechanism 3 is provided independently of the autofocus mechanism 2, the weight of the autofocus mechanism 2 is reduced, the inclination of the posture of the lens assembly 1 caused by the uneven weight distribution of the imaging module 100 is avoided, and the influence on servo control caused by the center of the lens assembly 1 deviating to the light incident side can be avoided, and it is not necessary to increase the spring supporting the lens assembly 1. Since the autofocus mechanism 2 and the variable aperture mechanism 3 can be assembled after their respective assemblies are completed, the manufacturing difficulty of the imaging module 100 is reduced and the stability is increased. In addition, by assembling the autofocus mechanism 2 and the variable aperture structure 3 in the axial direction, it is also possible to avoid the multi-directional protrusion of the imaging module 100.

[0075] As shown in FIG. 23, in Embodiment 4 of the present invention, there is provided an electronic device 200 including a device body 210 and the imaging module 100 in any of the above embodiments, and the imaging module 100 is provided on the device body 210.

[0076] In this embodiment, the electronic device 200 may be a portable electronic device such as a mobile phone, a tablet, a smart watch, or the like, or may be a photographing device such as a camera. In the present invention, there is no particular limitation on this.

[0077] As shown in FIG. 24, in Embodiment 5 of the present invention, a method for detecting the position of an imaging module applied to the imaging module 100 of the above Embodiment 1 is provided, and this position detection method includes the following steps.

[0078] S101. The first position detection element 225 detects the position of the carrier 21 in the optical axis direction, and transmits a first electrical signal carrying the position information of the carrier 21 to the driver 41.

[0079] S102. The second position detection element 336 detects the position of the blade driven ring 332 in a direction perpendicular to the optical axis, and transmits a second electrical signal carrying the position information of the blade driven ring 332 to the driver 41.

[0080] S103. The driver 41 receives the first electrical signal and the second electrical signal, and determines whether the position information of the carrier 21 corresponds to the position information of the blade driven ring 332 based on a preset correspondence relationship.

[0081] S1031. When they correspond, the driver 41 transmits a first control signal to the blade drive assembly 33, and the blade drive assembly 33 receives the first control signal and drives the blade driven ring 332 to maintain the current position.

[0082] S1032. When they do not correspond, the driver 41 transmits a second control signal to the blade drive assembly 33, and the blade drive assembly 33 receives the second control signal and drives the blade driven ring 332 to move the light shielding blade 32.

[0083] For ease of understanding, step S101 and step S102 may be performed simultaneously or sequentially. When step S101 and step S102 are performed sequentially in time, either one may be performed after the other.

[0084] Exemplarily, for the first position detection element 225 to detect the position of the carrier 21 in the optical axis direction, specifically, a first position detection magnet is provided on the carrier 21, the first position detection element 225 is a Hall element, and the first position detection element 225 detects the position of the carrier 21 by detecting the change in magnetic flux of the magnetic field of the first position detection magnet at the first position detection element 225.

[0085] In some embodiments, the first position detection magnet may be the first magnet 221. In this way, the number of components inside the imaging module 100 can be reduced and the structure can be simplified. In this case, the first position detection element 225 can be fixed to the carrier 21. When the carrier 21 moves, the first position detection element 225 follows the carrier 21 and moves relative to the first magnet 221. When the first position detection element 225 moves, it detects the change in magnetic flux and determines the position of the carrier 21. Thereafter, the first position detection element 225 transmits a first electrical signal including the position information of the carrier 21 to the driver 41.

[0086] In some other embodiments, the first position detection magnet (not shown) can be installed on the carrier 21 alone. In this case, the first position detection element 225 can be fixed to the mount 223 or other members. When the first position detection element 225 follows the carrier 21 and moves, the first position detection element 225 detects the change in magnetic flux and determines the position of the carrier 21. As can be understood, when the first magnet 221 is fixed to the carrier 21 and functions as the position detection magnet, the first position detection element 225 can be fixed to the mount 223 or other members.

[0087] Exemplarily, the second position detection element 336 detecting the position of the blade-driven ring 332 in a direction perpendicular to the optical axis specifically means that a second position detection magnet is provided on the blade-driven ring 332, the second position detection element 336 is a Hall element, and the second position detection element 336 detects the position of the blade-driven ring 332 by detecting the change in the magnetic flux of the magnet at the second position detection element 336 of the second position detection magnet.

[0088] In some embodiments, the second position detection magnet may be the second magnet 333. In this way, the number of components inside the imaging module 100 can be reduced and the structure can be simplified. In this case, the second position detection element 336 can be fixed to the mounting ring 334. When the blade-driven ring 332 rotates, the second position detection element 336 detects the change in magnetic flux to determine the rotation angle of the blade-driven ring 332 and determine the aperture of the diaphragm. Thereafter, the second position detection element 336 transmits a second electrical signal including the position information of the blade-driven ring 332 to the driver 41.

[0089] In some other embodiments, the second position detection magnet may be installed separately. When the second position detection magnet or the second magnet 333 is fixed to the mounting ring 334 and the second coil 331 is fixed to the blade-driven ring 332, the second position detection element 336 is fixed to the blade-driven ring 332.

[0090] Regarding step S103, after receiving the first electrical signal and the second electrical signal, the driver 41 performs a matching analysis on the positions of the carrier 21 and the blade-driven ring 332 based on the position information of the carrier 21 included in the first electrical signal and the position information of the blade-driven ring 332 included in the second electrical signal.

[0091] When it is determined that the positions of the carrier 21 and the blade-driven ring 332 conform to a predetermined correspondence relationship, it indicates that there is no need to adjust the aperture of the diaphragm. In this case, the driver 41 transmits a first control signal to the blade drive assembly 33 to drive the second coil 331 to hold the blade-driven ring 332 in a fixed position so as to maintain the aperture of the diaphragm.

[0092] When it is determined that the positions of the carrier 21 and the blade-driven ring 332 do not conform to a predetermined correspondence relationship, it indicates that the position of the aperture of the lens assembly 1 has changed and the viewing angle with respect to the aperture opening of the lens assembly 1 has changed. In this case, it is necessary to adaptively adjust the aperture opening so that the viewing angle with respect to the aperture opening of the lens assembly 1 is maintained constant. Therefore, the driver 41 transmits a second control signal to the blade drive assembly 33, whereby the second coil 331 drives the blade-driven ring 332 to move the light-shielding blade 32, and adaptively changes the aperture opening of the aperture.

[0093] Note that the first control signal and the second control signal are usually current signals having appropriate directions and magnitudes. When the first control signal or the second control signal flows through the second coil 331, a magnetic field is generated in the second coil 331, and the second coil 331 interacts with the second magnet 333 to drive the second magnet 333 to rotate the blade-driven ring 332.

[0094] During detection, the first position detection element 225 and the second position detection element 336 input the detected magnetic flux change signal to the driver 41, and the driver 41 replaces the magnetic flux change signal with a code, for example, 0 to 1023 or 0 to 4095. Note that the change in magnetic flux within the maximum range of normal focus drive and the maximum range of aperture drive is replaced with a code. In the driver 41, in order to match the drive position with the code, it is necessary to measure the stroke of the focus drive, optical image stabilization, or aperture drive using a stroke measurement device and then take a value.

[0095] Taking the case where the code is from 0 to 1023 and the stroke amount is 1000 μm as an example, when the code is 0, the stroke is 0 μm; when the code is 512, the stroke is 500 μm; when the code is 1023, the stroke is 1000 μm. That is, code 0 = 0 μm, code 512 = 500 μm, code 1023 = 1000 μm. In this case, the control signal output from the inside of the driver 41 ≈ magnetic flux value ≈ code value ≈ stroke value, thereby enabling control.

[0096] The correspondence between the position information of the carrier 21 and the position information of the blade driven ring 332 is similar to the rotation angle of the lens assembly 1 and the blade driven ring 332 in the above-described embodiment 1.

[0097] When the driver 41 is controlled by the blade control module 411, the blade control module 411 converts the received magnetic flux change signal into a corresponding code, matches the actual stroke based on the code, and then can send a control signal to the blade drive assembly 33.

[0098] When the first position controller 42 is used instead of the first position detection element 225 and the second position controller 43 is used instead of the second position detection element 336, the first position controller 42 and the second position controller 43 detect each other's positions, determine the change in the relative position between the variable aperture and the lens assembly 1, send the information including this position change to the driver 41, and the driver 41 sends a control signal to the blade drive assembly 33 based on the above position change.

[0099] In other feasible inventions, in addition to the TMR element that detects the change in magnetic flux such as a Hall element, a resistance sensor element that detects the change in resistance value to realize position detection may be used, or an optical sensor element that detects the change in the amount of sensor light reception due to the change in the lens position during focus movement to realize position detection may be provided. Further, the driver 41 can select a driver with a built-in Hall element or a driver for calculating the received electrical signal, which can select relevant installations and adaptively adjust according to actual needs, and the present invention is not particularly limited.

[0100] As shown in FIG. 25, in Embodiment 6 of the present invention, a method for detecting the position of an imaging module applied to the imaging module 100 of the above Embodiment 2 is provided, and this position detection method includes the following steps.

[0101] S201. The first position controller 42 detects the position of the second position controller 43, the second position controller 43 detects the position of the first position controller 42, and the first position controller 42 and / or the second position controller 43 determines whether the relative position between the two has changed.

[0102] S202. When it has changed, the first position controller 42 and / or the second position controller 43 sends a first control signal to the blade drive assembly 33, and the blade drive assembly 33 receives the first control signal and drives the blade driven ring 332 to move the light-shielding blade 32.

[0103] S203. When it has not changed, the first position controller 42 and / or the second position controller 43 sends a second control signal to the blade drive assembly 33, and the blade drive assembly 33 receives the second control signal and drives the blade driven ring 332 to maintain the current position.

[0104] Regarding step S201, when the first position controller 42 and the second position controller 43 detect a change in position by detecting a change in magnetic flux, the first position controller 42 and the second position controller 43 may be members having Hall elements internally, and position detection magnets may be provided on the carrier 21 and the blade driven ring 332. The first position controller 42 detects the position detection magnet on the blade driven ring 332, the second position controller 43 detects the position detection magnet on the carrier 21, and the first position controller 42 and the second position controller 43 can determine the drive position by calculating the magnetic flux change signal detected by the Hall element.

[0105] As can be understood, in this embodiment, the first position controller 42 and the second position controller 43 can also determine the drive position by detecting a change in resistance value or a change in the amount of received light.

[0106] The above has described in detail the imaging module, the electronic device, and the position detection method applied to the imaging module according to the embodiment of the present invention. In this specification, the principle and the embodiment of the present invention have been described using specific examples, but the description of the above embodiment is only used to help understand the idea of the present invention, and there are changes in both the specific embodiment and the scope of application. In short, the content of this specification should not be understood as limiting the present invention.

Claims

1. It includes a lens assembly, an autofocus mechanism, a variable aperture mechanism, and an interlocking mechanism, The autofocus mechanism includes a carrier and a focus drive assembly. The carrier is externally fitted and fixed to the outer periphery of the lens assembly so as to support the lens assembly. The focus drive assembly is used to move the lens assembly along the optical axis of the lens assembly by driving the carrier. The variable aperture mechanism includes a blade support member, a light-shielding blade, and a blade drive assembly. The blade support member, the light-shielding blade, and the blade drive assembly are all located on the object side of the lens assembly. The blade support member and the lens assembly are coaxially installed. The light-shielding blade is located between the blade support member and the blade drive assembly. The blade support member has a positioning hole, and the light-shielding blade has a positioning portion. The positioning portion extends rotatably into the positioning hole, and the light-shielding blade is rotatable about the positioning portion. When the focus drive assembly drives the carrier to move the lens assembly, the interlocking mechanism moves the light-shielding blade by driving the blade drive assembly, thereby adaptively changing the shielding area of the light-shielding blade with respect to the lens assembly. The interlocking mechanism includes a driver that electrically connects the focus drive assembly and the blade drive assembly. The driver detects the position of the carrier by the focus drive assembly and controls the blade drive assembly to move the light-shielding blade based on the position of the carrier. The blade drive assembly includes a second drive member, a blade driven ring, and a second position detection element. The second drive member is located between the light-shielding blade and the lens assembly. The blade driven ring is located between the light-shielding blade and the second drive member. The light-shielding blade is slidably connected to the blade driven ring. The second position detection element is electrically connected to the driver. The second driving member is used to drive the vane driven ring to move the light shielding vane, and the driver detects the position of the vane driven ring by the second position detecting element and controls the second driving member to move the light shielding vane based on the position of the vane driven ring. An imaging module characterized by the above. **Claim 2** The focus driving assembly includes a first driving member and a first position detecting element. The first position detecting element is electrically connected to the driver. The first driving member is used to drive the carrier to move along the optical axis. The driver detects the position of the carrier by the first position detecting element and controls the vane driving assembly to move the light shielding vane based on the position of the carrier. The imaging module according to claim 1, characterized by the above. **Claim 3** The autofocus mechanism further includes a zoom assembly. The zoom assembly is used to drive the focus driving assembly and the carrier to move along the optical axis to realize zooming. The imaging module according to claim 1, characterized by the above. **Claim 4** The imaging module further includes an anti-shake mechanism and a sensor assembly provided on the anti-shake mechanism. The anti-shake mechanism is located on the image side of the autofocus mechanism. The anti-shake mechanism is used to drive the sensor assembly to move to realize anti-shake. Or, the imaging module further includes an optical path folding mechanism provided between the variable aperture mechanism and the autofocus mechanism. The optical path folding mechanism is used to fold the optical path. The imaging module according to claim 1, characterized by the above. **Claim 5** Including a lens assembly, an autofocus mechanism, a variable aperture mechanism, and an interlocking mechanism. The autofocus mechanism includes a carrier and a focus driving assembly. The carrier is externally fitted and fixed to the outer periphery of the lens assembly to support the lens assembly. The focus driving assembly is used to drive the carrier to move the lens assembly along the optical axis of the lens assembly. ​ The variable aperture mechanism includes a blade support member, a light-shielding blade, and a blade drive assembly. The blade support member, the light-shielding blade, and the blade drive assembly are all located on the objective side of the lens assembly. The blade support member and the lens assembly are coaxially installed. The light-shielding blade is located between the blade support member and the blade drive assembly. The blade support member has a positioning hole, and the light-shielding blade has a positioning portion. The positioning portion extends rotatably into the positioning hole, and the light-shielding blade is rotatable about the positioning portion. When the focus drive assembly drives the carrier to move the lens assembly, the linkage mechanism moves the light-shielding blade by driving the blade drive assembly, thereby adaptively changing the shielding area of the light-shielding blade with respect to the lens assembly. The blade drive assembly includes a blade driven ring, which is located between the light-shielding blade and the lens assembly. The linkage mechanism includes a contact portion provided on the side of the blade driven ring facing the lens assembly. The lens assembly includes a lens assembly housing, and the linkage mechanism further includes a protrusion provided on the side of the lens assembly housing facing the blade driven ring. The protrusion is in contact with the contact portion. When the focus drive assembly drives the lens assembly to move toward the blade driven ring, the protrusion drives the contact portion to rotate the blade driven ring, increasing the shielding area of the light-shielding blade with respect to the lens assembly. An imaging module characterized by the above.

6. The contact portion has an inclined surface, and the protrusion is in contact with the inclined surface. When the lens assembly drives the protrusion to move toward the blade driven ring, the protrusion presses the inclined surface to drive the contact portion to rotate the blade driven ring. The imaging module according to claim 5, characterized by the above.

7. The blade drive assembly further includes a second driven member and a blade angle holding member. The second driven member is provided on the blade driven ring, and the blade angle holding member is installed opposite to the second driven member. When the focus driving assembly drives the lens assembly away from the vane driven ring, the vane angle holding member drives the second driven member to rotate the vane driven ring, reducing the shielding area of the light shielding vane with respect to the lens assembly. The imaging module according to claim 5, characterized in that.

8. Including a lens assembly, an autofocus mechanism, a variable aperture mechanism, and an interlocking mechanism. The autofocus mechanism includes a carrier and a focus driving assembly. The carrier is externally fitted and fixed to the outer periphery of the lens assembly so as to support the lens assembly. The focus driving assembly is used to move the lens assembly along the optical axis of the lens assembly by driving the carrier. The variable aperture mechanism includes a vane support member, a light shielding vane, and a vane driving assembly. The vane support member, the light shielding vane, and the vane driving assembly are all located on the object side of the lens assembly. The vane support member and the lens assembly are coaxially installed. The light shielding vane is located between the vane support member and the vane driving assembly. The vane support member has a positioning hole, and the light shielding vane has a positioning portion. The positioning portion extends rotatably into the positioning hole, and the light shielding vane is rotatable about the positioning portion. When the focus driving assembly drives the carrier to move the lens assembly, the interlocking mechanism drives the vane driving assembly to move the light shielding vane, thereby adaptively changing the shielding area of the light shielding vane with respect to the lens assembly. The focus driving assembly includes a first driving member and a first driven member. The first driven member is a first coil provided so as to be wound around the outer periphery of the carrier. The first driving member is a plurality of first magnets installed at intervals outside the first coil surrounding the first coil. When the first coil is energized, the first magnet drives the first coil to move the carrier along the optical axis. The blade drive assembly includes a second drive member, a blade driven ring, and a second driven member. The blade driven ring is provided between the light-shielding blade and the lens assembly. The light-shielding blade is slidably connected to the blade driven ring. The second driven member is a plurality of second magnets that surround the optical axis and are fixed to the blade driven ring at intervals. The second drive member is a plurality of second coils that are installed at intervals surrounding the optical axis. When the second coil is energized, it drives the second magnet to rotate the blade driven ring. An imaging module characterized by the above.

9. An electronic device including a device body and the imaging module according to any one of claims 1 to 8, wherein the imaging module is provided on the device body. An electronic device characterized by the above.

10. A position detection method applied to the imaging module according to claim 1, wherein the position detection method includes: The first position detection element detects the position of the carrier in the optical axis direction of the carrier and transmits a first electrical signal carrying the position information of the carrier to the driver. The second position detection element detects the position of the blade driven ring in a direction perpendicular to the optical axis of the blade driven ring and transmits a second electrical signal carrying the position information of the blade driven ring to the driver. The driver receives the first electrical signal and the second electrical signal, and determines whether the position information of the carrier corresponds to the position information of the blade driven ring based on a preset correspondence relationship. If they correspond, the driver transmits a first control signal to the blade drive assembly, and the blade drive assembly receives the first control signal and drives the blade driven ring to maintain the current position. If they do not correspond, the driver transmits a second control signal to the blade drive assembly, and the blade drive assembly receives the second control signal and drives the blade driven ring to move the light-shielding blade. A position detection method characterized by the above.

11. The first position detection element detecting the position of the carrier in the optical axis direction of the carrier specifically includes: A first position detection magnet is provided on the carrier. The first position detection element is a Hall element. The first position detection element detects the position of the carrier by detecting the change in magnetic flux of the magnetic field of the first position detection magnet in the first position detection element. The position detection method according to claim 10, characterized in that...

12. The detection of the position of the second position detection element in the direction perpendicular to the optical axis of the blade-driven ring specifically includes: A second position detection magnet is provided on the blade-driven ring, the second position detection element is a Hall element, and the second position detection element detects the change in the magnetic flux of the magnet in the second position detection element of the second position detection magnet to detect the position of the blade-driven ring. The position detection method according to claim 10, characterized in that...

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