Periscope motor and electronic device

Abstract

Embodiments of the present application relate to the technical field of photography. Disclosed are a periscope motor and an electronic device. The periscope motor in the present application comprises: a lens module and a detection module. The lens module comprises a plurality of lenses and lens carriers arranged corresponding to the lenses, wherein each lens carrier is used for carrying the corresponding lens and driving the lens to move in a focusing direction. The detection module comprises capacitor assemblies corresponding to the lenses, wherein each capacitor assembly comprises a transmitting plate, a receiving plate and a movable plate, the movable plate is fixed to the corresponding lens carrier, and the transmitting plate and the receiving plate are both fixedly arranged on the inner surface of a housing facing the movable plate. When a lens carrier moves, a facing area between the movable plate and the receiving plate in the capacitor assembly corresponding to said moving lens carrier changes, and a capacitance signal generated by the capacitor assembly corresponding to said lens carrier changes. A movement state of the lens carrier is determined on the basis of the change in the capacitance signal.

Description

A periscope motor and electronic device Cross-references

[0001] This disclosure claims priority to Chinese Patent Application No. 2025200757053, filed on January 13, 2025, entitled "A Periscope Motor and Electronic Device", and Chinese Patent Application No. 2024230345522, filed on December 9, 2024, which are incorporated herein by reference in their entirety. Technical Field

[0002] This application relates to the field of camera technology, and in particular to a periscope motor and electronic device. Background Technology

[0003] A periscope motor uses a prism to refract incident light, which is then focused by a lens to ensure it falls on the appropriate position on the image sensor, thus enabling the image capture function. The lens moves in the focusing direction to change the focal length. To achieve long-distance shooting without changing the size of the periscope motor, the number of lenses can be increased, allowing multiple lenses to work together to capture images at greater distances. To determine the movement distance of each lens and whether it has been adjusted to the appropriate focal length, a Hall effect sensor is used to detect the lens movement distance.

[0004] However, this method of determining the movement distance of each lens has at least the following drawbacks: Hall sensors or driver chips with Hall detection functionality need to work in conjunction with corresponding sensing magnets to measure the position of each lens, and a corresponding Hall sensor needs to be set up for each lens. Placing Hall sensors and corresponding magnets inside the periscope motor occupies a large amount of internal space, which is detrimental to the miniaturization of the motor. On the other hand, with a fixed internal space for the motor, the Hall sensors and magnets occupy a significant amount of space, and increasing the number of Hall sensors increases the manufacturing cost of the periscope motor. Summary of the Invention

[0005] The purpose of this application is to provide a periscope motor and an electronic device that reduces the internal volume occupied by the periscope motor, which is beneficial to the miniaturization of the motor and reduces the cost of the periscope motor.

[0006] Periscope motors are categorized into single-lens motors and multi-lens motors based on the number of lenses they contain. A single-lens motor can focus at a specific focal length. When achieving imaging across a continuous focal length, digital zoom cropping and image processing are used for other focal lengths beyond the specific focal length. For example, a single lens in a periscope motor can focus at specific focal lengths of 80mm, 110mm, and 140mm within the 80mm to 140mm focal length range. In the intermediate focal lengths between 80mm and 110mm, and between 110mm and 140mm, digital zoom cropping and image processing are used to achieve the desired imaging effect. An image produced by a single lens alone would be blurry, as the focus cannot be accurately projected onto the image sensor.

[0007] Multi-lens motors, due to the presence of multiple lens sets, can utilize one set to achieve telephoto capabilities while another set corrects and compensates for the image focus, ensuring it falls precisely on the image sensor, thus achieving continuous optical zoom. This application addresses the problem of detecting the movement distance of each lens in a multi-lens motor by proposing a periscope motor structure.

[0008] To address the aforementioned technical problems, embodiments of this application provide a periscope motor, comprising: a housing, a lens module, and a detection module; the lens module includes: multiple lenses, and lens carriers corresponding to each lens, the lens carriers being used to carry the corresponding lenses and drive the lenses to move in the focusing direction; the detection module includes: capacitor assemblies corresponding to each lens, each capacitor assembly including: an emitting electrode, a receiving electrode, and a moving electrode, wherein the moving electrode is fixed to the lens carrier, and the emitting electrode and the receiving electrode are both fixedly disposed on the inner surface of the housing facing the moving electrode; when the lens carrier moves in the focusing direction, the facing area between the moving electrode and the receiving electrode in the capacitor assembly corresponding to the moving lens carrier changes, and the capacitance signal generated by the capacitor assembly corresponding to the lens carrier changes; the movement of the lens carrier is determined based on the change in the capacitance signal.

[0009] This application also provides a periscope motor, including: a housing, a lens module, and a detection module; the lens module includes: multiple lenses, and lens carriers corresponding to each lens, the lens carriers being used to carry the corresponding lenses and drive the lenses to move in the focusing direction; the detection module includes: capacitor assemblies corresponding to each lens, each capacitor assembly including: an emitting electrode and a receiving electrode, wherein the emitting electrode is fixed to the lens carrier, and the receiving electrode is fixedly disposed on the inner surface of the housing facing the emitting electrode; the detection module further includes: a connector connecting the emitting electrodes in the multiple capacitor assemblies, and emitting electrode terminals disposed on the connector; when any lens carrier moves, the connector and the emitting electrodes in the multiple capacitor assemblies are kept connected; when the lens carrier moves in the focusing direction, the facing area between the emitting electrode and the receiving electrode in the capacitor assembly corresponding to the moving lens carrier changes, and the capacitance signal generated by the capacitor assembly corresponding to the lens carrier changes; the movement of the lens carrier is determined based on the change in the capacitance signal.

[0010] Embodiments of this application also provide an electronic device, including the periscope motor described above.

[0011] Compared to existing technologies, this application's embodiments, when the periscope motor includes multiple lenses, configure a capacitor assembly for each lens to detect its movement distance. Each capacitor assembly includes a transmitting electrode, a receiving electrode, and a moving electrode. The moving electrode is fixed to the lens carrier, and both the transmitting and receiving electrodes are fixedly disposed on the inner surface of the housing facing the moving electrode. When the lens carrier moves in the focusing direction, the facing area between the moving electrode and the receiving electrode in the capacitor assembly corresponding to the moving lens carrier changes, and the capacitance signal generated by the capacitor assembly corresponding to the lens carrier changes. The movement of the lens corresponding to each capacitor assembly can be determined based on the change in the capacitance signal in each set of capacitor assemblies. The electrodes in the capacitor assemblies are all attached to the surface of the original components of the periscope motor, occupying less internal space, and the cost of the electrodes is low, which helps to save on the manufacturing cost of the periscope motor.

[0012] The emitting plates in multiple capacitor assemblies are connected by connectors, and these connectors are equipped with emitting plate terminals, thus unifying the electrical signals of the emitting plates in the multiple capacitor assemblies. When the lens carrier moves in the focusing direction, the facing area between the emitting and receiving plates in the capacitor assembly corresponding to the moving lens carrier changes, and the capacitance signal generated by the capacitor assembly corresponding to the lens carrier changes. The processor can determine the movement of the lens corresponding to each capacitor assembly based on the changes in the capacitance signal in each capacitor assembly. Since the aforementioned connectors and emitting plate terminals unify the electrical signals on the emitting plates in multiple capacitor assemblies, the calculation of the capacitance signal only needs to consider the charge change of the receiving plate, simplifying the calculation of the capacitance signal. The plates in the capacitor assemblies are all attached to the surface of the original periscope motor components, occupying less internal space, and the cost of the plates is low, which helps to save on the manufacturing cost of the periscope motor. Attached Figure Description

[0013] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0014] Figure 1 is an exploded structural diagram of the periscope motor according to an embodiment of this solution;

[0015] Figure 2 is a schematic diagram of the capacitor assembly in the periscope motor according to an embodiment of this solution;

[0016] Figure 3 is a schematic diagram of the capacitor assembly in the periscope motor from another perspective according to an embodiment of this solution;

[0017] Figure 4 is a schematic diagram illustrating the principle of the capacitance effect of the capacitor assembly in the periscope motor according to an embodiment of this solution;

[0018] Figure 5 is a schematic diagram showing the displacement and capacitance value change trend of the capacitor component in the periscope motor according to the embodiment of this solution;

[0019] Figure 6 is a schematic diagram of the arrangement of the capacitor assembly in the periscope motor according to an embodiment of this solution;

[0020] Figure 7 is a schematic diagram of the arrangement of the capacitor assembly in the periscope motor according to an embodiment of this solution;

[0021] Figure 8 is a schematic diagram of the arrangement of the capacitor assembly in the periscope motor according to an embodiment of this solution;

[0022] Figure 9 is a schematic diagram of the electrode arrangement of the capacitor assembly in the periscope motor according to the embodiment of this solution;

[0023] Figure 10 is a schematic diagram of the electrode arrangement of the capacitor assembly in the periscope motor according to the embodiment of this solution;

[0024] Figure 11 is a schematic diagram of the electrode arrangement of the capacitor assembly in the periscope motor according to an embodiment of this solution;

[0025] Figure 12 is a schematic diagram of the rectangular receiving plate of the capacitor assembly in the periscope motor according to this embodiment;

[0026] Figure 13 is a schematic diagram of the structure of the receiving plate of the capacitor assembly in the periscope motor according to the embodiment of this solution, which is triangular;

[0027] Figure 14 is a schematic diagram of the trapezoidal structure of the receiving plate of the capacitor assembly in the periscope motor according to the embodiment of this solution;

[0028] Figure 15 is a schematic diagram of the exploded structure of the periscope motor according to an embodiment of this solution;

[0029] Figure 16 is a schematic diagram of the exploded structure of the periscope motor according to an embodiment of this solution;

[0030] Figure 17 is a schematic diagram of the capacitor assembly in the periscope motor according to an embodiment of this solution;

[0031] Figure 18 is a structural schematic diagram of the periscope motor according to the embodiment of this solution, where the connecting part is a slide rail structure.

[0032] Figure 19 is a structural schematic diagram of the periscope motor according to an embodiment of this solution, where the connecting component is a deformable conductor.

[0033] Figure 20 is a schematic diagram showing the displacement and capacitance value change trend of one of the capacitor components in the periscope motor according to the embodiment of this solution;

[0034] Figure 21 is a schematic diagram showing the displacement and capacitance value change trend of the second group of capacitor components in the periscope motor according to the embodiment of this scheme;

[0035] Figure 22 is a schematic diagram of the arrangement of the capacitor assembly in the periscope motor according to an embodiment of this solution;

[0036] Figure 23 is a schematic diagram of the arrangement of the capacitor assembly in the periscope motor according to an embodiment of this solution;

[0037] Figure 24 is a schematic diagram of the arrangement of the capacitor assembly in the periscope motor according to an embodiment of this solution;

[0038] Figure 25 is a schematic diagram of the trapezoidal structure of the receiving plate of the capacitor assembly in the periscope motor according to the embodiment of this solution;

[0039] Figure 26 is a schematic diagram of the structure of the receiving plate of the capacitor assembly in the periscope motor according to the embodiment of this solution, which is triangular;

[0040] Figure 27 is a schematic diagram of another structure in which the receiving plate of the capacitor assembly in the periscope motor is trapezoidal according to an embodiment of this solution;

[0041] Figure 28 is a schematic diagram of another structure in which the receiving plate of the capacitor assembly in the periscope motor is triangular according to an embodiment of this solution;

[0042] Figure 29 is an exploded structural diagram of the periscope motor according to an embodiment of this solution;

[0043] Figure 30 is a schematic diagram of the structure of the electronic device according to an embodiment of this solution. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the various embodiments of this application will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been presented in the various embodiments of this application to enable readers to better understand this application. However, the technical solutions claimed in this application can be implemented even without these technical details and various changes and modifications based on the following embodiments.

[0045] The division of the following embodiments is for ease of description and should not constitute any limitation on the specific implementation of this application. The various embodiments can be combined with and referenced by each other without contradiction.

[0046] The embodiments of this application relate to a periscope motor, as shown in FIG1. ​​The periscope motor includes: a housing 1, a lens module 2, and a detection module; the lens module 2 includes: a plurality of lenses 21, and a lens carrier 22 corresponding to each lens 21. The lens carrier 22 is used to carry the corresponding lens 21 and drive the lens 21 to move in the focusing direction; the detection module includes: a capacitor assembly 31 corresponding to each lens 21. As shown in Figures 2 and 3, which are views of the capacitor assembly from two different directions, each capacitor assembly 31 includes: an emitting electrode 311, a receiving electrode 312, and a moving electrode 313. The moving electrode 313 is fixed to the lens carrier 22, and the emitting electrode 311 and the receiving electrode 312 are both fixedly disposed on the inner surface of the housing 1 facing the moving electrode 313. When the lens carrier 22 moves in the focusing direction, the facing area between the moving electrode 313 and the receiving electrode 312 in the capacitor assembly 31 corresponding to the moving lens carrier 22 changes, and the capacitance signal generated by the capacitor assembly 31 corresponding to the lens carrier 22 changes. The movement of the lens carrier 22 is determined based on the change in the capacitance signal.

[0047] In capacitor assembly 31, the emitter plate 311 utilizes the principle of capacitance formed by the moving plate 313 and the receiver plate 312, as shown in Figure 4. The emitter plate 311 is connected to a circuit board, which applies a positive voltage signal to it. A large amount of positive charge accumulates on the surface of the emitter plate 311, while a large amount of negative charge accumulates in the area of ​​the moving plate 313 opposite it. Since the moving plate 313 is not connected to the circuit board, its charge does not transfer to the outside. Based on the principle of charge conservation, the positive charge on the moving plate 313 accumulates in another area, namely, near the receiver plate 312. The receiver plate 312, influenced by the positive charge of the moving plate 313, accumulates negative charge on its surface, thus forming a potential difference between the emitter plate 311 and the receiver plate 312, achieving the capacitance effect between them.

[0048] In this embodiment, the capacitor formed by the transmitting plate and the receiving plate is based on the physical formula of a parallel plate capacitor: C = εS / 4πkd; where ε represents the dielectric constant of the medium, determined by the medium between the plates, such as air or water; k represents the electrostatic constant, also known as the Coulomb constant, which indicates that the force between two point charges, each with a charge of 1C, separated by a distance of 1m in a vacuum is 8.987551 × 10⁻⁶. 9 N, i.e., k = 8.987551 × 10 9 N·m 2 / C; S represents the area (projected area) of the two electrodes facing each other; d represents the vertical distance between the two electrodes; π represents pi. As can be seen from the formula, in this embodiment, the change in the area between the moving electrode and the receiving electrode alters the magnitude of the capacitance signal. Based on the correspondence between the change in the area and the change in the capacitance signal, the movement distance of the lens is determined.

[0049] Compared to existing technologies, this application's embodiments, when the periscope motor includes multiple lenses, configure a capacitor assembly for each lens to detect its movement distance. Each capacitor assembly includes a transmitting electrode, a receiving electrode, and a moving electrode. The moving electrode is fixed to the lens carrier, and the transmitting and receiving electrodes are both fixedly disposed on the inner surface of the housing facing the moving electrode. When the lens carrier moves in the focusing direction, the facing area between the moving electrode and the receiving electrode in the capacitor assembly corresponding to the moving lens carrier changes, and the capacitance signal generated by the capacitor assembly corresponding to the lens carrier changes. The processor can determine the movement of the lens corresponding to each capacitor assembly based on the change in the capacitance signal in each capacitor assembly. The electrodes in the capacitor assemblies are all attached to the surface of the original components of the periscope motor, occupying less internal space, and the cost of the electrodes is low, which helps to save on the manufacturing cost of the periscope motor.

[0050] Furthermore, each capacitor assembly contains two receiving plates 312, arranged sequentially in the focusing direction. When the moving plate 313 moves in the focusing direction, the first change in the area of ​​the moving plate 313 facing one of the receiving plates 312 and the second change in the area of ​​the moving plate 313 facing the other receiving plate 312 are the same. That is, the decrease in the area of ​​the moving plate 313 facing one of the receiving plates 312 is equal to the increase in the area of ​​the moving plate 313 facing the other receiving plate 312, or the increase in the area of ​​the moving plate 313 facing one of the receiving plates 312 is equal to the decrease in the area of ​​the moving plate 313 facing the other receiving plate 312. This setup facilitates subsequent differential calculations of the two capacitance signals formed by the emitting plate 311 and the two receiving plates 312 in the capacitor assembly. It allows for correction or noise reduction of the capacitance signals, eliminating noise that can affect the accuracy of the calculation results due to environmental or human factors, while also improving the sensitivity of lens position control. The differential calculation formula is: a×(C1-C2) / (C1+C2); where a represents the amplification factor, C1 represents the capacitance signal formed by the emitting plate and one of the receiving plates, and C2 represents the capacitance signal formed by the emitting plate and the other receiving plate.

[0051] Assuming the initial position of the lens is 0 displacement and the lens travel is between -600 micrometers and +600 micrometers, the change curves of C1 and C2 detected during the lens movement are shown in Figure 5. In this figure, the solid line represents the trend change of C1 and the dashed line represents the trend change of C2.

[0052] Furthermore, as shown in Figure 3, the moving electrode includes a first sub-part 3133 disposed opposite to the emitting electrode and a second sub-part 3134 disposed opposite to the receiving electrode. The length of the first sub-part in the focusing direction is greater than the length of the second sub-part in the focusing direction. That is, the moving electrode adopts a T-shaped structure. This structural design can increase the facing area between the emitting electrode and the moving electrode in the focusing direction and reduce the height of the emitting electrode perpendicular to the focusing direction, which is beneficial for the miniaturization of the periscope motor.

[0053] Furthermore, the first facing area between the first sub-section of the moving electrode and the receiving electrode is larger than the second facing area between the second sub-section and the receiving electrode. This design ensures the accumulation of positive and negative charges in the moving electrode, thereby ensuring the capacitance signal and improving capacitance sensitivity.

[0054] Furthermore, the moving plates of different sets of capacitor assemblies are not on the same plane; the emitting and receiving plates of different sets of capacitor assemblies are respectively disposed on the inner surfaces of different sides of the housing, and the emitting and receiving plates of the same set of capacitor assemblies are disposed on the inner surface of the same side of the housing. As shown in Figure 6, in one set of capacitor assemblies 31, the moving plate faces the emitting and receiving plates disposed on the side of the housing, and in another set of capacitor assemblies 31', the moving plate faces the emitting and receiving plates disposed on the bottom surface of the housing. As shown in Figure 7, in one set of capacitor assemblies 31, the moving plate faces the emitting and receiving plates disposed on the side of the housing, and in another set of capacitor assemblies 31', the moving plate faces the emitting and receiving plates disposed on the other side of the housing.

[0055] In addition, as shown in Figure 2, the moving plates of different sets of capacitor components are all on the same plane, with the moving plates of the capacitor components facing the emitting and receiving plates on the side of the housing; or as shown in Figure 8, the moving plates of the capacitor components are all facing the emitting and receiving plates on the ground of the housing.

[0056] Furthermore, the moving electrode of the same capacitor assembly includes a first bent portion 3131 and a second bent portion 3132 extending from the first bent portion 3131. The first bent portion and the second bent portion are not on the same plane. The emitting electrode and the receiving electrode of the same capacitor assembly are respectively disposed on the inner surfaces of different sides of the housing. The emitting electrode is disposed opposite to the first bent portion, and the receiving electrode is disposed opposite to the second bent portion. As shown in Figure 9, in a single capacitor assembly, the first bent portion 3131 of the moving electrode 313 faces the emitting electrode disposed on the side of the housing, and the second bent portion 3132 of the moving electrode 313 faces the receiving electrode disposed on the bottom surface of the housing, thus improving space utilization. In addition, the emitting electrode and the receiving electrode can also be disposed on opposite sides of the housing.

[0057] Furthermore, the emitter plates in all capacitor assemblies are integrally formed, allowing the same positive voltage signal to be applied to all emitter plates. Subsequent capacitor signal calculations only require consideration of the charge change at the receiver plate, simplifying the calculation. Based on the integrally formed emitter plates in all capacitor assemblies, multiple emitter plates can also be set in each capacitor assembly, as shown in Figures 10 and 11. These are two different structural designs for capacitor assemblies with two emitter plates, forming a symmetrical structure with the two emitter plates located at opposite ends of the receiver plate. Figure 10 shows an I-shaped design for the moving plate, suitable for situations where the emitter and receiver plates are located on the bottom surface of the housing. Figure 11 shows an L-shaped design for the moving plate, increasing the direct facing distance between the moving and emitter plates, which helps ensure sufficient capacitor signal strength. Additionally, due to the larger spatial distance between the moving plates, the L-shaped design is suitable for periscope motors with a large stroke.

[0058] In addition, as shown in Figure 12, the shape of the receiving electrode is set to a rectangle; as shown in Figure 13, the shape of the receiving electrode is set to a triangle; and as shown in Figure 14, the shape of the receiving electrode is set to a trapezoid.

[0059] Additionally, as shown in Figure 15, the periscope motor also includes a drive module for driving the lens to move in the focusing direction. The drive module includes a magnet 41 and a coil 42. The magnet 41 is fixed to the lens carrier, and the coil 42 is fixed to the base 5. Each lens in the periscope motor is equipped with a separate drive module, enabling independent control of each individual lens.

[0060] The periscope motor described above can have two, three, or more lenses. The number of lenses is related to the focal length requirement for shooting, and there is no limit to the number of lenses here.

[0061] Another feasible embodiment of this application relates to a periscope motor, as shown in FIG16. The periscope motor includes: a housing 1, a lens module 2, and a detection module; the lens module 2 includes: a plurality of lenses 21, and a lens carrier 22 corresponding to each lens 21, the lens carrier 22 being used to support the corresponding lens 21 and drive the lens 21 to move in the focusing direction; the detection module includes: a capacitor assembly 31 corresponding to each lens 21. Taking two sets of capacitor assemblies as an example, FIG17 shows the positional relationship between the emitting electrode and the receiving electrode in the two sets of capacitor assemblies. Each set of capacitor assemblies 31 includes: an emitting electrode 311 and a receiving electrode 312. Among them, the emitting electrode 311 is fixed to the lens carrier 22, and the receiving electrode 312 is fixedly disposed on the inner surface of the housing 1 facing the emitting electrode 311. When the lens carrier 22 moves in the focusing direction, the emitting plate 311 in the capacitor assembly 31 corresponding to the moving lens carrier 22 moves with the lens carrier 22, and the facing area between it and the receiving plate 312 in the fixed position changes, and the capacitance signal generated by the capacitor assembly 31 corresponding to the lens carrier 22 changes; the movement of the lens carrier 22 is determined according to the change of the capacitance signal.

[0062] As shown in Figures 18 and 19, the detection module includes a connector that connects the emitting plates of multiple capacitor assemblies, and emitting plate terminals on the connector, which provide electrical signals to the emitting plates. The connector maintains a connection with the emitting plates in all lens carrier movements. To ensure this connection, two different connector configurations are described below:

[0063] As shown in Figure 18, the connector is a slide rail structure 32. When the connector is used to connect two emitting electrode plates 311, the two emitting electrode plates 311 are respectively connected to the two ends of the slide rail structure 32, and the connection position of each emitting electrode plate 311 with the slide rail structure 32 is movable relative to the slide rail structure 32 in the focusing direction. Each emitting electrode plate 311 extends towards the slide rail structure 32 to form a strip-shaped extension 3111. The end of the extension 3111 is connected to the end of the slide rail structure 32, and the end of the extension 3111 is movable relative to the slide rail structure 32 in the focusing direction. The end of the extension 3111 protrudes and is provided with a retaining part that matches the shape of the slide groove of the slide rail structure 32. The retaining part reciprocates within the slide groove. The surface of the retaining part is smooth to reduce friction with the slide groove during reciprocating movement. The slide groove in the slide rail structure 32 is made of metal. The transmitter plate terminal set on the slide rail structure 32 is connected to the slide groove. No matter where the transmitter plate 311 moves, since the transmitter plate 311 is in contact with the slide groove, the connection between the transmitter plate 311 and the transmitter plate terminal is ensured by the slide groove as the transmission medium of the electrical signal.

[0064] As shown in Figure 19, the connector is a deformable conductor 34. When the connector is used to connect two emitting plates 311, each emitting plate 311 is connected to its corresponding deformable conductor 34. That is, one deformable conductor 34 is provided for each emitting plate 311, and at least two deformable conductors are connected to the same emitting plate terminal 33. In this embodiment, all the deformable conductors 34 corresponding to the emitting plates in the two sets of capacitor assemblies in the periscope motor are connected to the same emitting plate terminal 33. When the lens carrier moves in the focusing direction, the deformable conductor 34 maintains its connection with the emitting plate 311 and the emitting plate terminal 33 while changing the distance between the emitting plate 311 and the emitting plate terminal 33 through deformation.

[0065] The deformable conductor is a flexible circuit board or a spring. When the deformable conductor is a flexible circuit board, the flexible circuit board can be arranged reasonably according to the internal space of the periscope motor. Specifically, the flexible circuit board is strip-shaped, with one end connected to the emitting electrode plate and the other end connected to the emitting electrode plate terminal. Flexible circuit boards corresponding to different emitting electrodes can be unconnected to each other. When the emitting electrode plate is displaced, the distance between the emitting electrode plate and the fixed-position emitting electrode plate terminal changes, generating a compressive or tensile force on the flexible circuit board. When a compressive force is applied to the flexible circuit board, the flexible circuit board is compressed, causing the middle area of ​​the flexible circuit board to bend and fold. When a tensile force is applied to the flexible circuit board, the flexible circuit board is stretched, causing the folded area in the middle area of ​​the flexible circuit board to extend to both ends, thereby lengthening the distribution length of the flexible circuit board in the focusing direction, always maintaining the connection between the two ends of the flexible circuit board and the emitting electrode plate terminal respectively. Similarly, when the deformable conductor is a spring sheet, since the spring sheet can change its shape under the action of external force, when a squeezing or stretching force is applied to the spring sheet, it can also ensure that the two ends of the spring sheet are always connected to the emitting electrode plate and the emitting electrode plate terminal respectively, thus avoiding the problem of the electrical signal being disconnected during the movement of the emitting electrode plate.

[0066] In this embodiment, the capacitance formed by the transmitting and receiving plates is based on the physical formula of a parallel-plate capacitor: C = εS / 4πkd; where ε represents the dielectric constant of the medium, determined by the medium between the plates, such as air or water; k represents the electrostatic constant, also known as the Coulomb constant, which indicates that the force between two point charges, each with a charge of 1C, separated by a distance of 1m in a vacuum is 8.987551 × 10⁻⁶. 9 N, i.e., k = 8.987551 × 10 9 N·m 2 / C; S represents the area (projected area) of the two electrodes facing each other; d represents the vertical distance between the two electrodes. As can be seen from the formula, in this embodiment, changes in the area of ​​the facing electrodes between the transmitting and receiving electrodes alter the magnitude of the capacitance signal. Based on the correspondence between the change in the facing area and the change in the capacitance signal, the lens movement distance is determined.

[0067] Furthermore, each capacitor assembly contains two receiving plates 312, which are centrally symmetrical. When the emitting plate 311 moves in the focusing direction, the first change in the area of ​​the emitting plate 311 facing one of the receiving plates 312 and the second change in the area of ​​the emitting plate 311 facing the other receiving plate 312 are the same. That is, the decrease in the area of ​​the emitting plate 311 facing one of the receiving plates 312 is equal to the increase in the area of ​​the emitting plate 311 facing the other receiving plate 312, or the increase in the area of ​​the emitting plate 311 facing one of the receiving plates 312 is equal to the decrease in the area of ​​the emitting plate 311 facing the other receiving plate 312. This setup facilitates subsequent differential calculations of the two capacitance signals formed by the emitting plate 311 and the two receiving plates 312 in the capacitor assembly. It allows for correction or noise reduction of the capacitance signals, eliminating noise that can affect the accuracy of the calculation results due to environmental or human factors, while also improving the sensitivity of lens position control. The differential calculation formula is: a×(C1-C2) / (C1+C2); where a represents the amplification factor, C1 represents the capacitance signal formed by the emitting plate and one of the receiving plates, and C2 represents the capacitance signal formed by the emitting plate and the other receiving plate.

[0068] Assuming the initial lens position is 0 displacement and the lens travel is between -600 micrometers and +600 micrometers, the capacitance changes of the two capacitors formed by the emitting electrode and two receiving electrodes in one lens assembly during lens movement are shown in Figure 20. Curve 1 represents the capacitance change of one capacitor in this assembly, and curve 2 represents the capacitance change of the other capacitor. Similarly, the capacitance changes of the two capacitors formed by the emitting electrode and two receiving electrodes in the other lens assembly during lens movement are shown in Figure 21. Curve 3 represents the capacitance change of one capacitor in this assembly, and curve 4 represents the capacitance change of the other capacitor. Since the emitting and receiving electrodes in the two sets of capacitor assemblies shown in Figures 20 and 21 are configured identically, the capacitance values ​​generated by the two sets of capacitor assemblies exhibit roughly the same trend with lens movement distance. However, if the emitting and receiving electrodes in the two sets of capacitor assemblies are configured differently, such as with differences in electrode arrangement and size, the corresponding capacitance values ​​will also show different trends with lens movement distance.

[0069] Furthermore, the emitting and receiving plates of different sets of capacitor assemblies can be disposed on the inner surface of the same side of the housing, with all receiving plates on the same plane. As shown in Figure 16, the receiving plates of both sets of capacitor assemblies are disposed on the same side of the housing, or, as shown in Figure 22, the receiving plates of both sets of capacitor assemblies are disposed on the bottom surface of the housing. Based on the layout of the periscope motor's internal structure, the emitting and receiving plates of different sets of capacitor assemblies can also be disposed on the inner surfaces of different sides of the housing. As shown in Figure 23, the receiving plate of one set of capacitor assembly 31 is disposed on the bottom surface of the housing, and the receiving plate of another set of capacitor assembly 31' is disposed on the side of the housing, with the position of the emitting plate in each set of capacitor assemblies corresponding to the position of the receiving plate in its respective set. In addition to the above arrangement, as shown in Figure 24, the receiving plate of one set of capacitor assembly 31 is disposed on the left side of the housing, and the receiving plate of another set of capacitor assembly 31' is disposed on the right side of the housing, with the receiving plates of the two sets of capacitor assemblies parallel and not on the same plane, and the position of the emitting plate in each set of capacitor assemblies corresponding to the position of the receiving plate in its respective set. The arrangement of connectors is designed based on the position of the emitting plates in the multiple capacitor assemblies. It is necessary to ensure that the connectors are not located between the emitting plates and the receiving plates, so as not to affect the capacitance value generated by the capacitor assemblies and ensure the accuracy of lens movement distance detection.

[0070] Furthermore, the receiver electrode can be rectangular, trapezoidal, or triangular in shape. As shown in Figure 17, the receiver electrode is rectangular; when two receiver electrodes are used, they are arranged sequentially in the focusing direction. As shown in Figures 25 and 27, the receiver electrode is trapezoidal. The arrangement of the receiver electrodes in Figures 25 and 27 differs to accommodate periscope motors of different heights. As shown in Figures 26 and 28, the receiver electrode is triangular. The right-angle side dimensions of the triangular electrodes in Figures 26 and 28 are set differently, similarly adaptable to periscope motors of different heights.

[0071] Additionally, as shown in Figure 29, the periscope motor also includes a drive module for driving the lens to move in the focusing direction. The drive module includes a magnet 41 and a coil 42. The magnet 41 is fixed to the lens carrier, and the coil 42 is fixed to the base 5. The housing is divided into an upper housing and a lower housing. The base 5 is embedded in the plastic part of the lower housing, and the receiving electrode is integrally formed with the lower housing through embedded injection molding. In the periscope motor, each lens is provided with a separate drive module to achieve independent control of a single lens. The periscope motor also includes a prism assembly 7, which is used to reflect the incident light so that the incident light can enter each group of lenses perpendicularly. If a spatial rectangular coordinate system is designed with the rotation center of the prism assembly as the intersection of the coordinate axes, the two rotation directions of the prism assembly are the X-axis and the Y-axis, and the lens movement direction (focusing direction) is parallel to the Z-axis.

[0072] Another feasible embodiment of this application relates to an electronic device, as shown in FIG30, including the periscope motor as described above. Incident light enters the periscope motor through the light-transmitting sheet 6, is reflected by the prism assembly 7, and then passes sequentially through multiple lenses 21 to reach the photosensitive chip 8. The incident light's propagation direction is changed by the reflecting mirrors in the prism assembly, allowing the incident light to penetrate the lenses 21 perpendicularly to reach the photosensitive chip 8.

[0073] Compared with related technologies, the electronic device provided in this application embodiment is equipped with the periscope motor provided in the aforementioned embodiment. Therefore, it also has the technical effects provided in the aforementioned embodiment, and will not be described in detail here.

[0074] Those skilled in the art will understand that the above embodiments are specific embodiments for implementing this application, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of this application.

Claims

1. A periscope motor, comprising: Housing, lens module, capacitor assembly; The lens module includes: multiple lenses, and lens carriers that correspond one-to-one with each lens. The lens carriers are used to carry the corresponding lens and drive the lens to move in the focusing direction. The capacitor assembly corresponds one-to-one with the lens. Each capacitor assembly includes: a transmitting electrode, a receiving electrode, and a moving electrode. The moving electrode is fixed to the lens carrier, and the transmitting electrode and the receiving electrode are both fixedly disposed on the inner surface of the housing facing the moving electrode. When the lens carrier moves in the focusing direction, the area between the moving electrode and the receiving electrode in the capacitor assembly corresponding to the moving lens carrier changes, and the capacitance signal generated by the capacitor assembly corresponding to the lens carrier changes; the movement of the lens carrier is determined based on the change in the capacitance signal.

2. The periscope motor according to claim 1, wherein, Each capacitor assembly contains two receiving plates, which are arranged sequentially in the focusing direction.

3. The periscope motor according to claim 1, wherein, The moving electrode plate includes a first sub-part disposed opposite to the transmitting electrode plate and a second sub-part disposed opposite to the receiving electrode plate, wherein the length of the first sub-part in the focusing direction is greater than the length of the second sub-part in the focusing direction.

4. The periscope motor according to claim 3, wherein, The first facing area between the first sub-part and the receiving electrode is greater than the second facing area between the second sub-part and the receiving electrode.

5. The periscope motor according to claim 1, wherein, The moving plates of different capacitor assemblies are not on the same plane; The emitting plates and receiving plates of different sets of capacitor assemblies are respectively disposed on the inner surfaces of different sides of the housing, and the emitting plates and receiving plates of the same set of capacitor assemblies are located on the inner surface of the same side of the housing.

6. The periscope motor according to claim 1, wherein, The moving electrode plate of the same capacitor assembly includes: a first bent portion and a second bent portion extending from the first bent portion, wherein the first bent portion and the second bent portion are not on the same plane; The emitting electrode and the receiving electrode of the same capacitor assembly are respectively disposed on the inner surface of different sides of the housing. The emitting electrode is disposed opposite to the first bent portion, and the receiving electrode is disposed opposite to the second bent portion.

7. The periscope motor according to any one of claims 1 to 6, wherein, The emitter plate in all capacitor assemblies is integrally formed.

8. The periscope motor according to claim 1, wherein, The receiving electrode plate is rectangular, triangular, or trapezoidal in shape.

9. The periscope motor according to claim 1, wherein, Each capacitor assembly has two emitter plates, which are located at opposite ends of the receiver plate.

10. A periscope motor, comprising: Housing, lens module, capacitor assembly; The lens module includes: multiple lenses, and lens carriers that correspond one-to-one with each lens. The lens carriers are used to carry the corresponding lens and drive the lens to move in the focusing direction. The capacitor assembly corresponds one-to-one with the lens. Each capacitor assembly includes an emitting electrode and a receiving electrode. The emitting electrode is fixed to the lens carrier, and the receiving electrode is fixedly disposed on the inner surface of the housing facing the emitting electrode. It also includes: a connector for connecting the emitting plates in the multiple sets of capacitor assemblies, and emitting plate terminals disposed on the connector; the connector and the emitting plates in the multiple sets of capacitor assemblies remain connected in any movement of the lens carrier; When the lens carrier moves in the focusing direction, the area between the emitting plate and the receiving plate in the capacitor assembly corresponding to the moving lens carrier changes, and the capacitance signal generated by the capacitor assembly corresponding to the lens carrier changes; the movement of the lens carrier is determined based on the change in the capacitance signal.

11. The periscope motor according to claim 10, wherein, The connector is a slide rail structure.

12. The periscope motor according to claim 11, wherein, When the connector is used to connect two emitting plates, the two emitting plates are respectively connected to the two ends of the slide rail structure, and the connection position of each emitting plate with the slide rail structure is movable relative to the slide rail structure in the focusing direction.

13. The periscope motor according to claim 10, wherein, The connector is a deformable conductor.

14. The periscope motor according to claim 13, wherein, When the number of emitting plates connected by the connector is two, each emitting plate is connected to a corresponding deformable conductor, and all deformable conductors are connected to the terminals of the emitting plates. When the lens carrier moves in the focusing direction, the deformable conductor remains connected to the emitting electrode and the emitting electrode terminal while changing the distance between the emitting electrode and the emitting electrode terminal by deformation.

15. An electronic device comprising: The periscope motor as described in any one of claims 1 to 14.

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