Variable aperture module and electronic equipment

Abstract

The invention discloses a variable aperture module and electronic equipment, and belongs to the technical field of optical components. The variable aperture module comprises a base, wherein a light inlet hole is formed in the base; the light shielding wafer is arranged on the base, and a light through hole is formed in the center of the light shielding wafer; the shading wafer has a first state in which the shading wafer telescopically deforms in the direction close to the center of the light through hole and the diameter of the light through hole is reduced, and a second state in which the shading wafer telescopically deforms in the direction away from the center of the light through hole and the diameter of the light through hole is enlarged; the adjusting mechanism is connected with the shading wafer and the base, and the adjusting mechanism is used for controlling the shading wafer to be in the first state or the second state.

Description

Technical Field

[0001] The present application belongs to the technical field of optical components, and specifically relates to a variable aperture module and an electronic device. Background Art

[0002] At present, the variable aperture of the camera uses motors and other means to rotate several sets of overlapping aperture blades to achieve the effect of controlling the amount of light entering the lens. However, the current solution of adjusting the aperture by rotating the aperture blades has a limited number of aperture positions corresponding to multiple sets of aperture blades, that is, the granularity of aperture adjustment is not fine enough, and high-precision adjustment cannot be achieved. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a variable aperture module and an electronic device, which can solve the problem that the aperture adjustment granularity of the existing variable aperture module is not fine enough and high-precision adjustment cannot be achieved.

[0004] In a first aspect, an embodiment of the present application provides a variable aperture module, including:

[0005] A base, wherein the base is provided with a light inlet hole;

[0006] A deformable light-shielding disc is arranged on a base, and a light-through hole is arranged at the center of the light-shielding disc; the light-shielding disc includes a first state in which the diameter of the light-through hole is reduced by stretching and deforming toward the center of the light-through hole, and a second state in which the diameter of the light-through hole is expanded by stretching and deforming toward the center of the light-through hole. An adjustment mechanism is respectively connected to the light-shielding disc and the base, and the adjustment mechanism is used to control the light-shielding disc to be in the first state or the second state.

[0007] In some embodiments, the variable aperture module further includes:

[0008] A capacitor assembly, the capacitor assembly includes at least one group of parallel capacitor plates, one of the capacitor plates in each group of parallel capacitor plates is fixed on the base, and the other capacitor plate is arranged at one end of the light shielding disc with a light-through hole in the center;

[0009] When the light shielding disc is stretched and deformed toward the center of the light-through hole, the distance between the plates of each group of parallel capacitor plates increases;

[0010] When the light shielding disc is stretched and deformed in a direction away from the center of the light-through hole, the distance between the plates of each group of parallel capacitor plates is reduced.

[0011] In some embodiments, the light-shielding disc is formed with a plurality of concentric corrugated circles along the radial direction, a first groove is formed between two adjacent corrugated circles, and the protrusions of the corrugated circles are away from the base.

[0012] In some embodiments, the bottom layer of the light-shielding disc is made of a hard material, and the surface layer of the light-shielding disc is provided with a fluffy matte layer.

[0013] In some embodiments, the adjustment mechanism comprises:

[0014] A magnetic coil is arranged along the edge of the base;

[0015] At least two sliding mechanisms with magnetism, each sliding mechanism is connected to the light shielding disc and the base respectively;

[0016] The magnetic coil receives an electrical signal and generates a magnetic field force between the magnetic coil and the sliding mechanism. Under the driving action of the magnetic field force, the sliding mechanism drives the shading disc to stretch and deform, so that the shading disc is in the first state or the second state.

[0017] In some embodiments, the sliding mechanism comprises:

[0018] A guide groove disposed on the base and used for connecting to the base;

[0019] A magnetic pulley, the magnetic pulley is located in the guide groove;

[0020] A telescopic component, one end of which is connected to the magnetic coil;

[0021] A first connecting member, the first connecting member is respectively connected to the magnetic pulley and the other end of the telescopic assembly;

[0022] A second connecting member, the second connecting member is respectively connected to the telescopic assembly and the light shielding disc;

[0023] Among them, the magnetic coil receives an electrical signal and generates a magnetic field force between it and the magnetic pulley. Under the driving action of the magnetic field force, the magnetic pulley drives the telescopic component to extend and retract, and the extension and retraction of the telescopic component drives the shading disc to extend and deform, so that the shading disc is in the first state or the second state.

[0024] In some embodiments, when the magnetic coil is not energized, the sum of the friction force between the bottom of the magnetic pulley and the guide groove and the friction force in the telescopic assembly is equal to the resistance of the light shielding disc to stretch.

[0025] In some embodiments, the telescopic assembly includes at least two telescopic rods connected section by section, wherein a first telescopic rod of the at least two telescopic rods is connected to the magnetic coil, and a second telescopic rod is respectively connected to a first connecting member and a second connecting member.

[0026] In some embodiments, a lubricating layer is provided in the guide groove.

[0027] In some embodiments, a first limiting column is provided on the periphery of the base close to the light inlet, and a second limiting column is provided on the outer periphery of the base away from the light inlet. The adjustment mechanism is located between the first limiting column and the second limiting column, and the first limiting column and the second limiting column are used to limit the movement range of the adjustment mechanism.

[0028] In some embodiments, the second limiting column is an annular column perpendicular to the base; or,

[0029] The second limiting column is an annular column perpendicular to the base, and a plurality of symmetrically distributed connecting parts are arranged on the outer edge of one end of the annular column away from the base.

[0030] In a second aspect, an embodiment of the present application further provides an electronic device, comprising a variable aperture module according to any embodiment of the first aspect.

[0031] In an embodiment of the present application, a variable aperture module includes a base provided with a light inlet hole, a deformable light-shielding disc arranged on the base, and a light-through hole is provided in the center of the light-shielding disc; the light-shielding disc includes a first state in which the diameter of the light-through hole is reduced by telescopic deformation toward the center direction of the light-through hole, and a second state in which the diameter of the light-through hole is expanded by telescopic deformation toward the center direction away from the light-through hole; an adjustment mechanism is respectively connected to the light-shielding disc and the base, and the adjustment mechanism is used to receive a control signal to control the light-shielding disc to the first state or the second state. In this way, due to the one-piece design of the light-shielding disc, the telescopic deformation of the light-shielding disc is controlled by the adjustment mechanism, so that the aperture size can be infinitely adjusted, that is, the aperture size can be adjusted with high precision to meet the user's usage requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a schematic structural diagram of a variable aperture module according to an embodiment of the present application;

[0033] Figure 2 It is one of the structural schematic diagrams of the base in the embodiment of the present application;

[0034] Figure 3 A second structural schematic diagram showing a base according to an embodiment of the present application;

[0035] Figure 4 A schematic diagram showing the structure of a threaded ring of a light-shielding disc according to an embodiment of the present application;

[0036] Figure 5 A schematic diagram showing the connection relationship between the adjustment mechanism, the base and the light shielding disc in an embodiment of the present application;

[0037] Figure 6 One of the structural schematic diagrams of the electronic device according to the embodiment of the present application is shown;

[0038] Figure 7 A schematic diagram showing a light-shielding disc in a small aperture according to an embodiment of the present application;

[0039] Figure 8 A second structural schematic diagram of an electronic device according to an embodiment of the present application;

[0040] Fig. 9 A schematic diagram showing a light-shielding disc in a large aperture according to an embodiment of the present application;

[0041] Fig.10 The third structural schematic diagram of the electronic device according to the embodiment of the present application. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0043] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0044] Currently, users are paying more and more attention to camera anti-shake. The current mechanical method requires the aperture base to be connected to the camera base. This results in the lens shaking inevitably when the rotating part drives the aperture blades to rotate to adjust the aperture, and the film is prone to produce ghosting, affecting the photo-taking experience.

[0045] In addition, when the rotating parts rotate, friction and noise are generated, which is not friendly to users who love silence.

[0046] Furthermore, there is a sharp-angle gap between the overlapping aperture blades of the existing variable aperture, which is not actually a circular aperture, and a small amount of light can still be transmitted through the gap.

[0047] The current solution of adjusting the aperture by rotating the aperture blades has a large thickness due to the fact that the aperture blades are composed of multiple groups. The thickness of the multiple groups of aperture blades stacked on each other is relatively large, resulting in a large thickness of the entire device, which will cause a poor hand feel when the user holds the electronic device and inconvenience in operating the entire device. In addition, since the aperture gears corresponding to the multiple groups of aperture blades are limited, the granularity of the aperture adjustment is not fine enough, and high-precision adjustment cannot be achieved.

[0048] In order to solve the above technical problems, the embodiments of the present application provide a variable aperture module and an electronic device.

[0049] The variable aperture module provided in the embodiment of the present application is described in detail below through specific embodiments and application scenarios in conjunction with the accompanying drawings.

[0050] like Figure 1 to Figure 5 , Figure 7 and Fig. 9 As shown, the variable aperture module of the embodiment of the present application includes: a base 1, the base 1 is provided with a light inlet hole 2; a deformable light-shielding disc 3, the light-shielding disc 3 is arranged on the base 1, and a light-through hole 4 is provided at the center of the light-shielding disc 3; the light-shielding disc 3 includes a first state in which the diameter of the light-through hole 4 is reduced by telescopic deformation toward the center direction close to the light-through hole 4, and a second state in which the diameter of the light-through hole 4 is expanded by telescopic deformation toward the center direction away from the light-through hole 4; an adjusting mechanism 5, the adjusting mechanism 5 is connected to the light-shielding disc 3 and the base 1 respectively, and the adjusting mechanism 5 is used to control the light-shielding disc 3 to be in the first state or the second state.

[0051] Optionally, the base 1 is a circular base. Specifically, a light inlet 2 is provided in the central area of ​​the base 1, and a light through hole 4 is provided in the center of the light shielding disc 3, so that light can be sequentially injected into the camera module through the light through hole 4 and the light inlet 2. The amount of light entering depends on the light through hole 4. The diameter of the light through hole 4 is equal to the diameter of the aperture.

[0052] The variable aperture module of the embodiment of the present application, due to the one-piece design of the shading disc, can realize infinite adjustment of the aperture size by controlling the telescopic deformation of the shading disc through the adjustment mechanism, that is, it can realize high-precision adjustment of the aperture size to meet the user's usage needs. In addition, the one-piece design of the shading disc can also reduce the thickness of the variable aperture module to a certain extent, thereby reducing the thickness of the entire device, improving the user's grip on the electronic device, and making the entire device easy to operate. At the same time, the one-piece design of the shading disc has high adjustment consistency and strong circularity in adjusting the aperture size.

[0053] In some embodiments, the variable aperture module of the present application further includes:

[0054] The capacitor assembly includes at least one group of parallel capacitor plates 6, one of the capacitor plates 61 of each group of parallel capacitor plates 6 is fixed on the base 1, and the other capacitor plate 62 is arranged at one end of the light shielding disc 3 with a light-through hole 4 in the center; when the light shielding disc 3 is stretched and deformed toward the center direction close to the light-through hole 4, the distance between the plates of each group of parallel capacitor plates 6 increases; when the light shielding disc 3 is stretched and deformed toward the center direction away from the light-through hole 4, the distance between the plates of each group of parallel capacitor plates 6 decreases.

[0055] Optionally, when there are multiple groups of parallel capacitor plates 6, the multiple groups of parallel capacitor plates 6 are connected in parallel. It should be noted that when the aperture changes (the diameter of the light hole 4 changes), the distance between the parallel capacitor plates 6 also changes. According to the accuracy requirements, one group of parallel capacitor plates 6 (low accuracy) or multiple groups of parallel parallel capacitor plates 6 (high accuracy) can be designed.

[0056] Here, the capacitance value of the capacitance component is used to determine the diameter of the aperture, and the diameter of the aperture is equal to the aperture of the light-through hole 4 , and the aperture value is related to the diameter of the aperture.

[0057] That is, during the process of adjusting the aperture size by the adjusting mechanism 5 , the electronic device determines whether the aperture diameter is adjusted to the required diameter by detecting the capacitance value of the capacitor component.

[0058] The following briefly introduces the principle of calculating the diameter of the aperture based on the change in capacitance.

[0059] The light shielding disc 3 is made of insulating material and slides between the two levels of the parallel capacitor plates 6 without exceeding the capacitance. The total dielectric constant changes with the expansion and contraction of the light shielding disc 3. The total dielectric constant is as shown in the following formula (1). The process of calculating the diameter of the aperture according to the capacitance change can be referred to in the following formulas (2) to (4).

[0060]

[0061] Among them, ε1 is the dielectric constant of air, V1 is the volume of air, ε2 is the dielectric constant of the light shielding disc 3, and V2 is the volume of the light shielding disc 3. It is only necessary to use the dielectric constant of air and the light shielding disc 3 at different distances measured before the test. Among them, c is capacitance, ε is dielectric constant, S is the effective area of ​​parallel capacitor plates, k is a constant, d is the distance between the parallel capacitor plates 6, L is the maximum capacitance distance at the minimum aperture, and b is the radius of the aperture actually calculated. That is, 2b is the diameter of the aperture.

[0062] It should be noted that, in actual development, the capacitance corresponding to different distances can be directly measured, the corresponding capacitance-aperture value curve can be drawn, and the electronic device can be input. After the electronic device detects the capacitance size, the corresponding aperture value can be captured, and the calculation is faster. By setting a capacitor component, the diameter of the aperture can be accurately calculated by testing the capacitance size of the capacitor component, and the structure of the variable aperture module of the present application has no mechanical limit lock, so the user can arbitrarily input the capacitance value to adjust the aperture size, and can distinguish more and finer aperture gears, realizing infinite adjustment of the aperture.

[0063] Determining whether the aperture diameter is adjusted to the required value can be achieved by the above-mentioned capacitor component, or by detecting the moving distance of the adjustment mechanism by a distance sensor. Specifically, a corresponding relationship between the moving distance of the adjustment mechanism and the diameter of the aperture can be established in advance. In this way, by setting up a distance sensor, the diameter of the aperture can be accurately calculated by testing the moving distance of the adjustment mechanism based on the pre-established corresponding relationship between the moving distance of the adjustment mechanism and the diameter of the aperture.

[0064] In some embodiments, see Figure 1 , Figure 7 and Fig. 9 The light shielding disc 3 is formed with a plurality of concentric corrugated circles 31 along the radial direction, a first groove 32 is formed between two adjacent corrugated circles 31 , and the protrusions of the corrugated circles 31 are away from the base 1 .

[0065] Here, the shading disc 3 is formed with a plurality of concentric corrugated circles 31, that is, the shading disc 3 is a shading disc with wrinkles. The corrugated circles (wrinkles) formed by the shading disc 3 themselves have certain resistance (the shading disc 3 is integrally formed and has deformation resistance, so the driving force from the adjustment mechanism (which can be the finger sliding force in the subsequent embodiment) is required to be greater than the resistance to drive the shading disc 3 to retract and deform, and the deformation resistance can be designed according to design requirements by adjusting the density of the corrugated circles and the material and thickness of the shading disc 3). At the same time, the adjustment mechanism (which can be the telescopic component in the subsequent embodiment) itself also has resistance. When there is no drive, the static force value is maintained by the resistance of the adjustment mechanism itself and the deformation resistance of the shading disc 3, so that the aperture size can be statically maintained.

[0066] On the basis of the above embodiments or in any embodiment, see Figure 4 The bottom layer of the shading disc 3 is made of hard material, and the surface layer of the shading disc 3 is provided with a fluff matte layer 33 .

[0067] Here, a fluff matting layer 33 is provided on the surface of the light shielding disc 3 to achieve absorption and diffuse reflection matting of the outer ring light (see Figure 4 The bottom layer of the light shielding disc 3 is a hard material with a certain memory and a certain resistance, such as memory metal, integral wrinkled injection-molded plastic, etc. The resistance of the adjustment mechanism (which can be a pulley in the subsequent embodiments) can be designed by the thickness of the hard material.

[0068] In some embodiments, the adjustment mechanism 5 includes: a magnetic coil 7, which is arranged along the edge of the base 1; and at least two magnetic sliding mechanisms 8, each of which is connected to the shading disc 3 and the base 1 respectively.

[0069] Optionally, the magnetic coil 7 is an iron core magnetic coil. At least two includes two or more, which can be understood as multiple. That is, the adjustment mechanism 5 includes multiple magnetic sliding mechanisms 8, and the multiple magnetic sliding mechanisms 8 are symmetrically distributed on the base 1 to ensure that each point of the shading disc 3 is uniformly contracted or stretched, and also play a role in supporting the shading disc 3.

[0070] The magnetic coil 7 receives an electrical signal and generates a magnetic field force with the sliding mechanism 8. Driven by the magnetic field force, the sliding mechanism 8 drives the shading disc 3 to stretch and deform, so that the shading disc 3 is in the first state or the second state.

[0071] Specifically, under the driving action of the magnetic field force, the sliding mechanism 8 drives the shading disc 3 to stretch and deform toward the center direction close to the light hole 4, and the diameter of the light hole 4 is reduced; or, the sliding mechanism 8 drives the shading disc 3 to stretch and deform toward the center direction away from the light hole 4, and the diameter of the light hole 4 is expanded.

[0072] In the case where the variable aperture module includes a capacitor component, if the capacitor component includes a group of parallel capacitor plates 6, the parallel capacitor plates 6 correspond to the target sliding mechanism (i.e., one of the at least two sliding mechanisms 8), and the target sliding mechanism is located between the parallel capacitor plates 6. If the capacitor component includes multiple groups of parallel capacitor plates 6, the multiple groups of parallel capacitor plates 6 correspond to multiple sliding mechanisms 8 one by one, and the sliding mechanisms 8 are located between the corresponding parallel capacitor plates 6. In this way, when the sliding mechanism 8 drives the light shielding disc 3 to stretch and deform, the distance between the plates of the parallel capacitor plates 6 also changes accordingly, which facilitates the subsequent establishment of the corresponding relationship between the diameter of the light hole 4 on the light shielding disc 3 (i.e., the diameter of the aperture) and the capacitance value of the capacitor component. In this way, it is possible to further determine whether the required aperture diameter is adjusted by detecting the capacitance value of the capacitor component, thereby improving the accuracy of aperture adjustment.

[0073] In some embodiments, see Figure 1 , Figure 2 and Figure 5 As shown, the sliding mechanism 8 includes: a guide groove 9 arranged on the base 1 and used to connect the base 1; a magnetic pulley 10, the magnetic pulley 10 is located in the guide groove 9; a telescopic component 11, one end of the telescopic component 11 is connected to the magnetic coil 7; a first connecting member 12, the first connecting member 12 is respectively connected to the magnetic pulley 10 and the other end of the telescopic component 11; a second connecting member 13, the second connecting member 13 is respectively connected to the telescopic component 11 and the shading disc 3.

[0074] Here, the guide groove 9 can be provided on the base 1 , or the guide groove 9 can be an independent component and fixed on the base 1 .

[0075] Among them, the magnetic coil 7 receives an electrical signal and generates a magnetic field force between it and the magnetic pulley 10. Under the driving action of the magnetic field force, the magnetic pulley 10 drives the telescopic component 11 to extend and retract. The extension and retraction of the telescopic component 11 drives the shading disc 3 to extend and deform, so that the shading disc 3 is in the first state or the second state.

[0076] Here, the connection between the magnetic pulley 10 and the telescopic assembly 11 is realized by the first connecting member 12, and the connection between the telescopic assembly 11 and the light shielding disc 3 is realized by the second connecting member 13; in this way, when the magnetic pulley 10 slides on the guide groove 9, it can drive the telescopic assembly 11 to extend and retract, and then the extension and retraction of the telescopic assembly 11 drives the light shielding disc 3 to extend and deform, so that the light shielding disc 3 is in the first state or the second state. Specifically, the magnetic pulley 10 and the telescopic assembly 11 are fixedly connected by the first connecting member 12, so that the magnetic pulley 10 can slide along the guide groove 9 without rolling, and the polarity of the magnetic pulley 10 can also be fixed.

[0077] Optionally, a lubricating layer is provided in the guide groove 9. This can reduce sliding resistance and improve energy conversion efficiency. Since a lubricating layer is provided in the guide groove 9, the sound when the aperture changes can be greatly reduced, achieving a silent effect. Optionally, the guide groove 9 is a groove, which can prevent the magnetic pulley 10 from derailing when sliding.

[0078] The magnetic pulley 10 is controlled to slide by adjusting the current of the magnetic coil 7 , and the magnetic pulley 10 drives the telescopic component 11 to extend and retract, and the telescopic component 11 contracts or stretches the light-shielding disc 3 to achieve the effect of adjusting the aperture size.

[0079] On the basis of the above embodiment, optionally, when the magnetic coil 7 is not energized, the sum of the friction between the bottom of the magnetic pulley 10 and the guide groove 9 and the friction in the telescopic assembly 11 is equal to the resistance of the light shielding disc 3 to stretch. In this way, hovering can be achieved at any time.

[0080] Based on the above embodiment, optionally, the telescopic assembly 11 includes at least two telescopic rods connected section by section, wherein a first telescopic rod 14 of the at least two telescopic rods is connected to the magnetic coil 7, and a second telescopic rod 16 is connected to the first connecting member 12 and the second connecting member 13 respectively.

[0081] That is, the telescopic assembly 11 is a segmented telescopic rod. At least two telescopic rods are connected in a step-by-step nested manner, which can prevent the telescopic assembly 11 from bending due to excessive length during the telescopic process, and ensure that the shading disc 3 is on the same plane, which will not affect the accuracy of the aperture adjustment.

[0082] In one example, see Figure 1 The telescopic assembly 11 includes a first telescopic rod 14 connected to the magnetic coil 7, a third telescopic rod 15 connected to the first telescopic rod 14, and a second telescopic rod 16 connected to the third telescopic rod 15 in sequence; the diameter of the second telescopic rod 16 is smaller than the diameter of the third telescopic rod 15, the diameter of the third telescopic rod 15 is smaller than the diameter of the first telescopic rod 14, and the second telescopic rod 16 is respectively connected to the first connecting member 12 and the second connecting member 13.

[0083] That is, the telescopic assembly 11 is a segmented telescopic rod. Here, the diameter of the second telescopic rod 16 is smaller than the diameter of the third telescopic rod 15, so that the second telescopic rod 16 can be nested in the third telescopic rod 15, and the diameter of the third telescopic rod 15 is smaller than the diameter of the first telescopic rod 14, so that the third telescopic rod 15 can be nested in the first telescopic rod 14, and such a nesting design can also prevent the telescopic assembly 11 from bending due to the length process during the telescopic process, ensuring that the light shielding disc 3 is on the same plane, which will not affect the accuracy of the aperture adjustment.

[0084] In any embodiment, a first limiting column 17 is provided on the periphery of the base 1 close to the light inlet 2, and a second limiting column 18 is provided on the outer periphery of the base 1 away from the light inlet 2. The adjustment mechanism 5 is located between the first limiting column 17 and the second limiting column 18. The first limiting column 17 and the second limiting column 18 are used to limit the movement range of the adjustment mechanism 5.

[0085] Specifically, the guide groove 9 on the sliding mechanism 8 of the adjustment mechanism 5 is connected to the first limit column 17, and its purpose is to prevent the magnetic pulley 10 from derailing and failing due to the electronic device falling or violent shaking.

[0086] In actual applications, the variable aperture module is assembled to an electronic device, and a first limiting column 17 is provided on the periphery of the base 1 close to the light inlet 2, and a second limiting column 18 is provided on the outer periphery of the base 1 away from the light inlet 2, the purpose of which is to prevent the adjustment mechanism (specifically the magnetic pulley in some embodiments) from derailing and becoming ineffective when the electronic device falls or is violently shaken; in addition, a second limiting column 18 is provided on the outer periphery of the base 1 away from the light inlet 2, the purpose of which is to facilitate the assembly of the variable aperture module to the electronic device.

[0087] Optional, see Figure 3 The second limiting column 18 is a circular column perpendicular to the base 1. In this way, the second limiting column 18 can be fixed on the lens 19 of the electronic device by an adhesive, see Figure 3 .

[0088] Optional, see Figure 2 The second limiting column 18 is an annular column perpendicular to the base 1, and a plurality of symmetrically distributed connecting parts 30 are provided on the outer edge of one end of the annular column away from the base 1. The connecting parts 30 are provided with fixing holes, so that the second limiting column 18 is fixed to the lens 19 of the electronic device through the fixing holes.

[0089] See also Figure 6 , Figure 8 and Fig.10 An embodiment of the present application also provides an electronic device, comprising the variable aperture module described in any of the above embodiments.

[0090] In some embodiments, the electronic device further comprises:

[0091] A camera module 20; a battery back cover, wherein the battery back cover is provided with a lens 19, and a variable aperture module is arranged on a side of the lens 19 close to the camera module 20; and a processor (not shown in the figure), wherein the processor is used to output a first control signal to the adjustment mechanism 5, wherein the first control signal is used to control the light-shielding disc 3 to be in a first state in which the light-shielding disc 3 is stretched and deformed toward the center direction close to the light-through hole 4, and the diameter of the light-through hole 4 is reduced, or to output a second control signal to the adjustment mechanism 5, wherein the second control signal is used to control the light-shielding disc 3 to be in a second state in which the light-shielding disc 3 is stretched and deformed toward the center direction away from the light-through hole 4, and the diameter of the light-through hole 4 is expanded.

[0092] In some embodiments, the outer periphery of the base 1 away from the light inlet 2 is provided with a second limiting column 18. Optionally, the second limiting column 18 is an annular column perpendicular to the base 1, and a plurality of symmetrically distributed connecting parts 30 are provided on the outer edge of one end of the annular column away from the base 1. The connecting part 30 is provided with a fixing hole, so that the screw fixes the second limiting column 18 to the lens 19 of the electronic device through the fixing hole, see Figure 2 .

[0093] Optionally, the second limiting column 18 is a circular column perpendicular to the base 1. In this way, the second limiting column 18 can be fixed on the lens 19 of the electronic device by an adhesive, see Figure 3 .

[0094] The above two fixing methods can both achieve effective and stable fixation of the base 1, thereby ensuring the stability of the aperture change.

[0095] It should be noted that Figure 6 In the embodiment, the lens 19 is composed of a transparent glass and a non-transparent glass arranged around the transparent glass. For example, the non-transparent glass is ink-printed glass. The black part represents the non-transparent glass, and the white part except the black part is the transparent glass.

[0096] The camera module 20 includes a first frame 201 , a lens 202 disposed on the first frame 201 , a flexible circuit board 203 connected to the first frame 201 , and an image sensor 204 disposed on the flexible circuit board 203 .

[0097] Here, the variable aperture module is arranged on the lens 19 of the battery back cover and is separated from the camera module 20. In this way, when the variable aperture module is adjusting the aperture, it will not cause the camera module 20 to shake, thereby improving the photo-taking experience.

[0098] In some embodiments, when the variable aperture module includes a capacitor component, the processor is further used to: obtain a first aperture value to be adjusted, determine a first distance value according to the current aperture value and the first aperture value, the first aperture value being greater than the current aperture value; determine a first current value according to the first distance value; control the power supply module to output a first electrical signal to the adjustment mechanism 5 according to the first current value, so that the adjustment mechanism 5 drives the light shielding disc 3 to stretch and deform under the action of the electric driving force, so that the light shielding disc 3 is in a second state of stretching and deforming in a direction away from the center of the light-through hole, and the diameter of the light-through hole 4 is enlarged; according to the corresponding relationship between the aperture value and the capacitance value of the capacitor component, when it is detected that the capacitance value of the capacitor component is the first capacitance value corresponding to the first aperture value, control the power supply module to stop supplying power; or,

[0099] The processor is used to obtain a second aperture value to be adjusted, determine a second distance value according to the current aperture value and the second aperture value, and the second aperture value is smaller than the current aperture value; determine a second current value according to the second distance value; control the power supply module to output a second electrical signal to the adjustment mechanism 5 according to the second current value, so that the adjustment mechanism 5 drives the light shielding disc 3 to stretch and deform under the action of the electric driving force, so that the light shielding disc 3 is in a first state of stretching and deforming toward the center direction of the light through hole 4, and the diameter of the light through hole 4 is reduced; according to the corresponding relationship, when it is detected that the capacitance value of the capacitor component is the second capacitance value corresponding to the second aperture value, control the power supply module to stop supplying power;

[0100] The capacitance value of the capacitor component is used to determine the diameter of the aperture, the diameter of the aperture is equal to the aperture of the light-through hole 4, and the aperture value is related to the diameter of the aperture.

[0101] It should be noted that, based on the aperture value to be adjusted and the current aperture value, it is possible to calculate the distance that needs to be moved (that is, how much the diameter of the light-passing hole 4 of the shading disc 3 needs to be expanded or reduced), and then based on the distance that needs to be moved, the required current value is calculated, that is, the current value required to drive the adjustment mechanism to cause the shading disc 3 to deform, thereby achieving adjustment of the diameter of the light-passing hole 4. In order to determine whether to adjust to the required aperture diameter, based on the correspondence between the pre-stored aperture value and the capacitance value of the capacitor component, when it is detected that the current capacitance value of the capacitor component is the capacitance value corresponding to the aperture value to be adjusted, the power supply is stopped, that is, the power supply module is controlled to stop outputting electrical signals to the adjustment mechanism 5.

[0102] The following is an optional embodiment in which the adjustment mechanism of the variable aperture module includes a magnetic coil and a sliding mechanism, and the implementation steps of aperture control are described.

[0103] When the aperture needs to be reduced, the system of the electronic device issues an instruction, and the processor obtains the target distance value (i.e., how much the diameter of the light hole 4 of the light-shielding disc 3 needs to be reduced) according to the target aperture value to be adjusted (obtained according to the instruction) and the current aperture value. Then, the required current value is calculated according to the target distance value, and the power supply module is controlled to output the target electrical signal to the magnetic coil 7 according to the required current value, that is, the direction of the magnetic coil is adjusted. At this time, the direction of the magnetic coil 7 repels the magnetic field of the magnetic pulley 10 ( Figure 8 As shown in the dotted box, the polarity of the magnetic pulley 10 is the same as the polarity of the magnetic coil 7. The magnetic pulley 10 drives the telescopic rod to extend under the repulsive force of the magnetic field, and the aperture is reduced. When the target aperture value is reached, the capacitance value of the capacitor component is consistent with the target capacitance value. In this way, the range of the aperture after the final adjustment is shown in FIG. Figure 7 , the corresponding amount of light entering can be found in Figure 8 (As shown by the dotted arrow in the figure). Afterwards, the system is powered off, and the magnetic pulley 10 stops immediately under the strong resistance of the light shielding disc 3.

[0104] The implementation of large aperture is similar, but the current direction is opposite, so it will not be described here. The range of the final adjusted aperture is shown in Fig. 9 , the corresponding amount of light entering can be found in Fig.10 (As shown by the solid arrow in the figure, the dotted box indicates that the polarity of the magnetic pulley 10 is opposite to the polarity of the magnetic coil 7.) The amount of light entering the large aperture is greater than the amount of light entering the small aperture. It should be noted that Figure 8 and Fig.10 The components within the dotted frame are only for illustration, to indicate the polarity relationship, and do not represent the actual layout of the components.

[0105] It should be noted that the electronic devices in the embodiments of the present application include the mobile electronic devices and non-mobile electronic devices mentioned above.

[0106] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A variable aperture module, characterized in that: include: A base, wherein the base is provided with a light inlet hole; A deformable light-shielding disc, the light-shielding disc is arranged on the base, and a light-through hole is arranged at the center of the light-shielding disc; the light-shielding disc includes a first state in which the diameter of the light-through hole is reduced by stretching and deforming toward the center of the light-through hole, and a second state in which the diameter of the light-through hole is expanded by stretching and deforming away from the center of the light-through hole; An adjusting mechanism is connected to the shading disc and the base respectively, and is used to control the shading disc to be in the first state or the second state.

2. The variable aperture module according to claim 1, characterized in that: Also includes: A capacitor assembly, the capacitor assembly comprising at least one group of parallel capacitor plates, one capacitor plate of each group of parallel capacitor plates is fixed on the base, and the other capacitor plate is arranged at one end of the light shielding disc having the light through hole in the center; Wherein, when the light shielding disc is stretched and deformed toward the center direction of the light through hole, the distance between the plates of each group of parallel capacitor plates increases; When the light shielding disc is stretched and deformed in a direction away from the center of the light through hole, the distance between the plates of each group of parallel capacitor plates is reduced.

3. The variable aperture module according to claim 1, characterized in that: The light shielding disc is formed with a plurality of concentric corrugated circles along the radial direction, a first groove is formed between two adjacent corrugated circles, and the protrusions of the corrugated circles are away from the base.

4. The variable aperture module according to claim 1 or 3, characterized in that: The bottom layer of the light-shielding disc is made of a hard material, and the surface layer of the light-shielding disc is provided with a fluff matte layer.

5. The variable aperture module according to claim 1, characterized in that: The regulating mechanism comprises: A magnetic coil, wherein the magnetic coil is arranged along an edge of the base; At least two magnetic sliding mechanisms, each of which is connected to the light-shielding disc and the base respectively; The magnetic coil receives an electrical signal and generates a magnetic field force between the magnetic coil and the sliding mechanism. Under the driving action of the magnetic field force, the sliding mechanism drives the shading disc to expand and contract, so that the shading disc is in the first state or the second state.

6. The variable aperture module according to claim 5, characterized in that: The sliding mechanism comprises: A guide groove disposed on the base and used for connecting to the base; a magnetic pulley, the magnetic pulley being located in the guide groove; A telescopic component, one end of which is connected to the magnetic coil; a first connecting member, the first connecting member being respectively connected to the magnetic pulley and the other end of the telescopic assembly; A second connecting member, the second connecting member is respectively connected to the telescopic assembly and the light shielding disc; Among them, the magnetic coil receives an electrical signal and generates a magnetic field force between the magnetic pulley. Under the driving action of the magnetic field force, the magnetic pulley drives the telescopic component to extend and retract. The extension and retraction of the telescopic component drives the shading disc to extend and deform, so that the shading disc is in the first state or the second state.

7. The variable aperture module according to claim 6, characterized in that: When the magnetic coil is not energized, the sum of the friction force between the bottom of the magnetic pulley and the guide groove and the friction force in the telescopic assembly is equal to the resistance of the light-shielding disc to stretch.

8. The variable aperture module according to claim 6, characterized in that: The telescopic assembly comprises at least two telescopic rods connected section by section, wherein a first telescopic rod of the at least two telescopic rods is connected to the magnetic coil, and a second telescopic rod is connected to the first connecting member and the second connecting member respectively.

9. The variable aperture module according to claim 6, characterized in that: A lubricating layer is arranged in the guide groove.

10. The variable aperture module according to claim 1, characterized in that: A first limiting column is provided on the periphery of the base close to the light inlet, and a second limiting column is provided on the outer periphery of the base away from the light inlet. The adjustment mechanism is located between the first limiting column and the second limiting column, and the first limiting column and the second limiting column are used to limit the movement range of the adjustment mechanism.

11. The variable aperture module according to claim 10, characterized in that: The second limiting column is an annular column perpendicular to the base; or, The second limiting column is an annular column perpendicular to the base, and a plurality of symmetrically distributed connecting parts are provided on the outer edge of one end of the annular column away from the base.

12. An electronic device, characterized in that: It comprises the variable aperture module as claimed in any one of claims 1 to 11.

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