Lens module and electronic device

Abstract

The application discloses a lens module and an electronic device. The lens module comprises a shell, a chip connected with the shell, a lens at least partially arranged in the shell, the lens being movably connected with the shell, the lens comprising a lens barrel and at least two lenses arranged in the lens barrel, the lens being oppositely arranged with the chip, a coil spacer arranged in the lens barrel and located between the at least two lenses to be arranged in a spaced manner between the adjacent two lenses, and a magnet structure arranged in the shell and corresponding to the coil spacer. In the case that the coil spacer is electrified, the magnet structure drives the coil spacer to drive the lens to be close to or away from the chip, so that the lens is focused.

Description

Technical Field

[0001] This application belongs to the field of electronic device technology, specifically relating to a lens module and an electronic device. Background Technology

[0002] In related technologies, existing autofocus (AF) cameras have coils wound around the outer circumference of the carrier, and then the lens is glued to the inner wall of the carrier. When the coil is energized, it generates electromagnetic force, which interacts with the magnetic field on the motor to make the lens move up and down, thus realizing the autofocus function of the lens module. However, with the rapid development of cameras, the weight of the lens and the carrier is getting heavier and heavier, which increases the risk of impact with other structural components during drops. In addition, the lens needs to be glued to the inner wall of the carrier, and the weight of the glue and the space for glue application are getting larger and larger, affecting the size of the camera. At the same time, the power consumption of the required voice coil motor (VCM) will increase, and the motor will require more coils and magnets, resulting in an increase in the size of the camera and affecting the overall stacking of the device. Summary of the Invention

[0003] This application aims to provide a lens module and an electronic device that at least solves the problem in the related art that the lens module is too heavy, resulting in a large lens module size and increased power consumption.

[0004] To solve the above-mentioned technical problems, this application is implemented as follows:

[0005] In a first aspect, embodiments of this application propose a lens module, comprising: a housing; a chip connected to the housing; a lens, at least partially disposed within the housing, movably connected to the housing, the lens including a lens barrel and at least two lens elements disposed within the lens barrel, the lens and the chip being disposed opposite to each other; a coil spacer disposed within the lens barrel, located between at least two lens elements, such that adjacent lens elements are spaced apart; and a magnet structure disposed within the housing, the magnet structure being correspondingly disposed with the coil spacer; when the coil spacer is energized, the magnet structure drives the coil spacer to move the lens closer to or away from the chip, thereby enabling the lens to focus.

[0006] Secondly, embodiments of this application provide an electronic device, including: a lens module as described in any of the first aspects.

[0007] In embodiments of this application, the lens module includes a housing, a chip, a lens, a coil spacer, and a magnetic structure. The lens is at least partially disposed within the housing, which protects and supports it. The lens includes a lens barrel and at least two lens elements disposed within the lens barrel for focusing light. The lens is movably connected to the housing, allowing it to move relative to the housing. The magnetic structure is disposed on the housing, and the coil spacer is disposed within the lens barrel, located between the at least two lens elements, ensuring that adjacent lens elements are spaced apart. When the coil spacer is energized, it generates a magnetic field. The magnetic field of the magnetic structure interacts with the magnetic field generated by the coil spacer, driving the coil spacer and its connected lens closer to or further away from the chip, thus achieving lens focusing. The lens module proposed in this application places the coil spacer between two adjacent lenses, which can both separate the adjacent lenses and drive the lens to move to achieve focusing when energized. At the same time, it reduces the carrier used to install the lens and focusing coil in related technologies, reduces the overall weight and material cost of the lens module, reduces the power consumption of the lens module, and reduces the size of the lens module.

[0008] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0009] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0010] Figure 1 This is one of the structural schematic diagrams of a lens module according to an embodiment of this application;

[0011] Figure 2 This is a second schematic diagram of the lens module according to an embodiment of this application;

[0012] Figure 3 This is the third schematic diagram of the lens module according to an embodiment of this application;

[0013] Figure 4 This is a schematic diagram of the structure of the coil spacer according to an embodiment of this application;

[0014] Figure 5 This is a cross-sectional schematic diagram of the coil spacer according to an embodiment of this application;

[0015] Figure 6 This is a schematic diagram of the structure of the reinforcing plate and the additional coil according to an embodiment of this application;

[0016] Figure 7This is a schematic diagram of the aperture adjustment component in the contracted state according to an embodiment of this application;

[0017] Figure 8 This is a schematic diagram of the telescopic bracket in its retracted state according to an embodiment of this application;

[0018] Figure 9 This is a schematic diagram of the aperture adjustment member in its extended state according to an embodiment of this application;

[0019] Figure 10 This is a structural schematic diagram of the telescopic bracket in its extended state according to an embodiment of this application.

[0020] Figure label:

[0021] 1. Housing, 2. Lens, 20. Lens barrel, 22. Lens element, 24. Conductive insert, 3. Coil spacer, 30. Coil, 302. Inner ring surface, 304. Outer ring surface, 32. Encasing part, 34. Reinforcing plate, 36. Additional coil, 4. Magnet structure, 5. Aperture adjustment part, 50. Through hole, 52. Telescopic bracket, 520. Corrugated structure, 54. Light shield, 56. Power supply part, 6. Elastic part, 7. Chip, 8. Filter, 9. Circuit board. Detailed Implementation

[0022] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0023] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "a plurality of" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects.

[0024] In the description of this application, it should be understood that the terms "center", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0025] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0026] The following is combined Figures 1-10 This application describes a lens module and an electronic device according to embodiments thereof.

[0027] like Figure 1 , Figure 2 and Figure 3 As shown, a lens module according to some embodiments of this application includes: a housing 1; a chip 7 connected to the housing 1; a lens 2, at least partially disposed within the housing 1, movably connected to the housing 1, the lens 2 including a lens barrel 20 and at least two lens elements 22 disposed within the lens barrel 20, the lens 2 and the chip 7 being disposed opposite each other; a coil spacer 3 disposed within the lens barrel 20, located between at least two lens elements 22, such that adjacent lens elements 22 are spaced apart; a magnet structure 4 disposed within the housing 1, the magnet structure 4 being correspondingly disposed with the coil spacer 3; when the coil spacer 3 is energized, the magnet structure 4 drives the coil spacer 3 to move the lens 2 closer to or away from the chip 7, so that the lens 2 can focus.

[0028] In the embodiments of this application, the lens module includes a housing 1, a chip 7, a lens 2, a coil spacer 3, and a magnetic structure 4. The lens 2 is at least partially disposed within the housing 1, and the housing 1 provides protection and support for the lens 2. The lens 2 includes a lens barrel 20 and at least two lens elements 22 disposed within the lens barrel 20 for focusing light. The lens 2 is movably connected to the housing 1, allowing the lens 2 to move relative to the housing 1. The magnetic structure 4 is disposed on the housing 1, and the coil spacer 3 is disposed within the lens barrel 20 and located between at least two lens elements 22, such that adjacent lens elements 22 are spaced apart. That is, the coil spacer 3 ensures that there is a gap between adjacent lens elements 22, thus separating adjacent lens elements 22. When the coil spacer 3 is energized, it generates a magnetic field. The magnetic field of the magnetic structure 4 and the magnetic field generated by the coil spacer 3 interact, driving the coil spacer 3 and the lens 2 connected to it to move closer to or away from the chip 7, thereby achieving focusing of the lens 2. The lens module proposed in this application places the coil spacer 3 between two adjacent lenses 22, which can both separate the adjacent lenses 22 and drive the lens 2 to move when energized to achieve focusing. At the same time, it also reduces the carrier used to install the lens 2 and the focusing coil 30 in related technologies, reduces the overall weight and material cost of the lens module, reduces the power consumption of the lens module, and reduces the size of the lens module.

[0029] It is understandable that the coil spacer 3 is placed between two adjacent lenses 22. It can function as a coil 30 to cooperate with the magnet structure 4 to achieve focusing of the lens 2, and it can also serve to separate adjacent lenses 22. Therefore, compared with related technologies, the carrier supporting the lens 2 and the spacer separating adjacent lenses 22 are reduced, and the glue used to bond the carrier and lens 2 in related technologies is also reduced, thereby greatly reducing the overall weight.

[0030] In practical applications, the lens 2 is movably connected to the housing 1, allowing the lens 2 to extend and retract relative to the housing 1. Furthermore, the lens 2 can move relative to the housing 1 in a direction away from or towards the circuit board 9.

[0031] Furthermore, the magnet structure 4 includes a magnet.

[0032] Furthermore, the coil spacer 3 drives all the lenses 22 to move so that all the lenses 22 move closer to or further away from the chip 7.

[0033] like Figure 5 As shown, according to some embodiments of this application, the coil spacer 3 includes a multi-turn coil 30, or the coil spacer 3 includes a flexible circuit board coil.

[0034] In this embodiment, the coil spacer 3 can be a multi-turn coil 30 or a flexible circuit board coil implemented using flexible circuit board technology. When the multi-turn coil 30 or the flexible circuit board coil is energized, it can generate a magnetic field, which then interacts with the magnetic field generated by the magnet structure 4 to drive the lens 2 to focus. In the case where the coil spacer 3 includes a flexible circuit board coil, it also ensures the spacing effect of the coil spacer 3 on adjacent lenses 22, preventing the spacing effect from failing due to mutual compression between adjacent lenses 22.

[0035] Specifically, the coil spacer 3 can be made of multiple turns of copper wire, wherein the number of turns of the coil 30 can be set according to the actual situation.

[0036] like Figure 4 As shown, according to some embodiments of this application, the coil spacer 3 includes an inner ring surface 302 and an outer ring surface 304, and at least one of the inner ring surface 302 and the outer ring surface 304 is provided with a wrapping member 32.

[0037] In this embodiment, at least one of the inner ring surface 302 and the outer ring surface 304 of the coil spacer 3 is wrapped by the wrapping member 32, which increases the strength of the coil spacer 3 and improves the spacing effect of the coil spacer 3 between adjacent lenses 22, thus preventing the coil spacer 3 from deforming when adjacent lenses 22 squeeze the coil spacer 3.

[0038] In practical applications, the wrapping element 32 is made of glue or a rigid sheet material. Furthermore, the coil spacer 3 is encased in the wrapping element 32 to form an integral structure.

[0039] Furthermore, the inner ring surface 302 and the outer ring surface 304 of the coil spacer 3 are both wrapped with glue by dispensing.

[0040] Furthermore, the axial direction of the coil spacer 3 is the same as the direction of movement of the lens 2 relative to the housing 1 during focusing.

[0041] It should be noted that the coil spacer 3 is set inside the lens barrel 20. The space enclosed by the inner ring surface 302 of the coil spacer 3 allows light to pass through, avoiding obstruction of light, and thus achieving a light-gathering effect through the lens 22 and other structures.

[0042] like Figure 6 As shown, according to some embodiments of this application, along the optical axis of the lens 2, at least one end face of the coil spacer 3 is provided with a reinforcing plate 34; the reinforcing plate 34 is provided with a through hole; the coil spacer 3 also includes an additional coil 36, which is disposed on the reinforcing plate 34, with one end of the additional coil 36 located on one side of the reinforcing plate 34, and the other end of the additional coil 36 extending into the other side of the reinforcing plate 34 through the through hole.

[0043] In this embodiment, a reinforcing plate 34 is provided on at least one end face of the coil spacer 3 along the movement direction of the lens 2, which can improve the strength of the coil spacer 3, thereby ensuring that the coil spacer 3 achieves effective spacing, avoiding deformation of the coil spacer 3 when adjacent lenses 22 squeeze the coil spacer 3, and thus ensuring that there is always a gap between at least two adjacent lenses 22.

[0044] In specific applications, the reinforcing plate 34 includes a rigid substrate.

[0045] It is understandable that the shape of the reinforcing plate 34 is the same as that of the coil spacer 3, thereby avoiding light obstruction, or the reinforcing plate 34 includes a light-transmitting plate.

[0046] Furthermore, an additional coil 36 can be added by reinforcing plate 34, thereby increasing the number of turns of coil 30 in coil spacer 3, improving electromagnetic strength, and thus ensuring the driving force on lens 2. The reinforcing plate 34 is provided with a through hole, one end of the additional coil 36 is located on one side of the reinforcing plate 34, and the other end passes through the through hole to the other side of the reinforcing plate 34.

[0047] In specific applications, the reinforcing plate 34 includes a rigid substrate. The additional coil 36 can be fabricated on the rigid substrate or it can be a coil independent of the rigid substrate.

[0048] like Figure 1 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, according to some embodiments of this application, the lens module further includes: an aperture adjustment member 5, disposed inside the lens barrel 20, the aperture adjustment member 5 including a through hole 50, the through hole 50 being correspondingly disposed with the lens 22, and the aperture adjustment member 5 being able to extend and retract to adjust the size of the through hole 50.

[0049] In this embodiment, the lens module further includes an aperture adjustment component 5 disposed within the lens barrel 20. The aperture adjustment component 5 includes a through hole 50 for allowing light to pass through. The aperture adjustment component 5 is retractable to adjust the size of the through hole 50, thereby adjusting the light-transmitting area and enabling the aperture of the lens module to be adjustable, thus improving the shooting effect.

[0050] In practical applications, the aperture adjustment component 5 is located on the side of the coil spacer component 3 away from the circuit board 9.

[0051] like Figure 8 and Figure 10As shown, according to some embodiments of this application, the aperture adjustment member 5 includes: a telescopic bracket 52, which is connected to the lens barrel 20 and can extend into the through hole 50 or retract away from the through hole 50; and a light-shielding member 54, which is disposed on the telescopic bracket 52 and surrounds the through hole 50 on the side of the light-shielding member 54 away from the lens barrel 20. The telescopic bracket 52 is used to drive the light-shielding member 54 to extend or retract to adjust the size of the through hole 50.

[0052] In this embodiment, the aperture adjustment component 5 includes a telescopic bracket 52 and a light-shielding component 54. The telescopic bracket 52 is connected to the lens barrel 20 and can extend into the through hole 50 or retract away from the through hole 50, thereby causing the light-shielding component 54 connected to the telescopic bracket 52 to extend or retract. The light-shielding component 54 covers the telescopic bracket 52 and encloses the through hole 50 through which light passes. During the extension of the telescopic bracket 52, the light-shielding component 54 extends towards the center of the through hole 50, thereby reducing the light-transmitting area of ​​the through hole 50. During the retraction of the telescopic bracket 52, the light-shielding component 54 retracts away from the center of the through hole 50, thereby increasing the light-transmitting area of ​​the through hole 50. That is, the aperture size is adjusted.

[0053] It is understandable that the telescopic bracket 52 encloses a cavity on the side away from the inner wall of the lens barrel 20, and the cavity is positioned opposite to the through hole 50.

[0054] In practical applications, the light-shielding member 54 is a telescopic structure. Furthermore, at least a portion of the light-shielding member 54 is an elastic member 6. Specifically, the light-shielding member 54 is a flexible light-shielding member.

[0055] Furthermore, such as Figure 9 and Figure 10 As shown, when the telescopic bracket 52 is extended, the light-shielding member 54 is in the deployed state, as... Figure 7 and Figure 8 As shown, when the telescopic bracket 52 is retracted, at least a portion of the light-shielding member 54 is in a folded state.

[0056] Specifically, the light-shielding element 54 includes a PET (Polyethylene terephthalate) film, and further, the light-shielding element 54 includes a black PET film.

[0057] like Figure 8 and Figure 10 As shown, according to some embodiments of this application, the telescopic bracket 52 includes a corrugated structure 520, which extends or retracts to cause the light-shielding member 54 to extend or retract.

[0058] In this embodiment, the telescopic bracket 52 includes a corrugated structure 520, through which the telescopic bracket 52 extends and retracts. Specifically, when the telescopic bracket 52 extends toward the center of the through hole 50, the corrugated structure 520 unfolds, causing the light-shielding member 54 on the corrugated structure 520 to extend toward the center of the through hole 50, thereby reducing the area of ​​the through hole 50 enclosed by the light-shielding member 54, thus reducing the area through which light passes. When the telescopic bracket 52 retracts away from the through hole 50, the corrugated structure 520 retracts, causing the light-shielding member 54 on the corrugated structure 520 to retract away from the through hole 50, thereby increasing the area through which light passes.

[0059] Furthermore, the portion of the light-shielding element 54 corresponding to the corrugated structure 520 is an elastic element 6.

[0060] In practical applications, the light-shielding element 54 has a ring structure.

[0061] like Figure 7 and Figure 9 As shown, according to some embodiments of this application, the aperture adjustment member 5 further includes: an energized part 56, which is connected to the telescopic bracket 52 and is used to control the telescopic bracket 52 to be energized or de-energized.

[0062] In this embodiment, the aperture adjustment component 5 further includes an energized part 56, which is connected to the telescopic bracket 52 and is used to supply power to the telescopic bracket 52 so that the telescopic bracket 52 can extend or retract after being energized, thereby driving the light-shielding component 54 to extend or retract, so as to adjust the size of the through hole 50, thereby making the aperture size of the lens module adjustable.

[0063] According to some embodiments of this application, the telescopic bracket 52 includes a shape memory alloy component.

[0064] In this embodiment, the telescopic bracket 52 includes a shape memory alloy component, which can support the light-shielding component 54, enable telescopic movement, and reduce the overall weight of the aperture adjustment component 5.

[0065] like Figure 2 As shown, according to some embodiments of this application, the lens barrel 20 is provided with a conductive insert 24, and the coil spacer 3 is connected to the conductive insert 24.

[0066] In this embodiment, a conductive insert 24 is provided on the lens barrel 20. The conductive insert 24 is connected to the coil spacer 3, realizing the electrical connection between the coil spacer 3 and the external structure of the lens barrel 20, thereby realizing the power supply of the coil spacer 3, so that the coil spacer 3 can generate a magnetic field when energized.

[0067] In specific applications, the conductive insert 24 includes a metal component, which may be a conductive metal such as copper or iron.

[0068] According to some embodiments of this application, the two ends of the conductive insert 24 are exposed in the lens barrel 20 along the extension and retraction direction of the lens 2.

[0069] In this embodiment, along the extension and retraction direction of the lens 2, both ends of the conductive insert 24 are exposed in the lens barrel 20, so that the conductive insert 24 penetrates the body of the lens barrel 20. Then, one end of the conductive insert 24 located inside the lens barrel 20 is connected to the coil spacer 3, and the other end of the conductive insert 24 located outside the lens barrel 20 is convenient to connect with other power supply devices or conductive devices so that the coil spacer 3 can achieve circuit conduction.

[0070] like Figures 1 to 3 As shown, according to some embodiments of this application, the lens module further includes: an elastic member 6, disposed between the housing 1 and the lens 2, wherein the lens 2 is movably connected to the housing 1 through the elastic member 6, and the elastic member 6 is electrically connected to the conductive insert 24.

[0071] In this embodiment, the lens module also includes an elastic element 6. The lens 2 is movably connected to the housing 1 through the elastic element 6, allowing the lens 2 to move relative to the housing 1 under the action of the coil spacer 3 and the magnetic structure 4, thereby achieving the focusing function of the lens 2. Simultaneously, the elastic element 6 provides elastic force to the lens 2 to balance the magnetic force generated by the magnetic structure 4 and the coil spacer 3, ensuring the stability of the lens 2 and enabling the lens 2 to return to its original position. The elastic element 6 is electrically connected to the conductive insert 24, thus achieving the electrical connection of the coil spacer 3.

[0072] It is understandable that the elastic element 6 includes the conductive elastic element 6.

[0073] Furthermore, the elastic element 6 is a spring.

[0074] like Figure 1 As shown, according to some embodiments of this application, the lens module further includes: a filter 8 disposed on the chip 7 and located on the side of the chip 7 facing the lens 2; and a circuit board 9 electrically connected to the chip 7.

[0075] In this embodiment, the lens module also includes a light filter 8 and a circuit board 9. The circuit board 9 is connected to an external circuit, the chip 7 is mounted on the circuit board 9, and the light filter 8 is located on the side of the chip 7 facing away from the circuit board 9. The light filter 8 can absorb certain wavelengths of light, thus achieving a filtering effect and improving image quality. The chip 7 uses photosensitive elements to convert the light image on the photosensitive surface into an electrical signal with a certain proportional relationship, which is then fed back to the circuit board 9 to achieve imaging control.

[0076] In specific applications, circuit board 9 includes a rigid-flex board for carrying chip 7.

[0077] According to one embodiment of this application, an electronic device is also proposed, comprising: a lens module as proposed in any of the above embodiments, thus having all the beneficial effects of a lens module, which will not be repeated here.

[0078] It should be noted that electronic devices include mobile phones, tablets, wearable devices, reality and virtual reality devices, industrial cameras, etc.

[0079] In specific applications, this application provides a new lens 2 and motor design scheme. By replacing the spacer and light shield inside the lens 2 with the coil 30 and SMA structure (shape memory alloys) on the carrier, the carrier and spacer are eliminated, reducing the space size and driving load of the carrier and coil 30. At the same time, the air gap of the lens 22 is adjusted by the coil spacer 3 inside the lens 2. The coil spacer 3 is energized to generate electromagnetic force to drive the lens 2. In addition, the lens module proposed in this application can also realize the adjustment of the aperture size of the lens 2.

[0080] Compared to conventional AF (Auto focus) designs, this application eliminates the spacer between the Carrier and the original lens 2, as well as the adhesive, reducing the module's size in the XY direction and material costs; it also reduces the weight of the spacer between the Carrier and the original lens 2, and the adhesive used to bond the lens 2 and the Carrier, thus lowering power consumption; and it enables the lens 2 to have a variable aperture, thereby changing the amount of light received and the depth of field.

[0081] Specifically, the lens 2 is equipped with an integrated coil spacer 3, a lens barrel 20, a lens barrel 20 insert (e.g., a conductive insert 24), and an SMA structure.

[0082] Lens 2: Composed of several lens elements 22 and lens element 22 fixing devices, mainly responsible for focusing light.

[0083] The integrated coil spacer 3 is an FPC (Flexible Printed Circuit) coil 30 made of multiple turns of copper wire or flexible circuit board technology. While the coil 30 generates magnetic force when energized, it also replaces the spacer inside the lens 2 and realizes the function of separating the gaps between the lenses 22.

[0084] Lens tube 20: It serves to fix and support the internal components of lens 2, lens 22, and other fixtures.

[0085] Lens barrel 20 insert: The lens barrel 20 is located between the integrated coil spacer 3 and the motor spring, which blocks the conduction between the coil 30 and the spring. Therefore, by adding a conductive insert 24 inside the lens barrel 20, the conductive insert 24 passes through the lens barrel 20 (such as a conductive metal like copper), and then connecting the motor spring, the lens barrel 20 insert, and the integrated coil spacer 3, the circuit is connected, and the circuit conduction is achieved.

[0086] SMA structure: In related technologies, a fixed aperture size is designed by setting a light-blocking plate inside the lens 2 or by using the lens barrel 20. In this application, an SMA structure is set inside the lens barrel 20, and the size of the light-blocking is adjusted by energizing and de-energizing the SMA and controlling the current, thereby adjusting the aperture of the lens 2.

[0087] Furthermore, the motor includes a reed, a magnet, and an integrated coil spacer 3. The Lorentz force generated by the magnet and the energized integrated coil spacer 3 drives the lens 2 to move up and down. The direction of the magnet, the direction of the magnetic flux, the direction of the current in the coil 30, and the corresponding force direction on the lens 2 (Fleming's left-hand rule) are as follows: Figure 2 and Figure 3 As shown. The reed not only enables the current to flow through the coil 30, but also provides elasticity to balance the magnetic force. The reed is connected to the insert in the lens barrel 20 and the coil 30 to achieve circuit conduction.

[0088] Furthermore, the lens module also includes a filter 8: used to absorb light of certain wavelengths to improve image quality; a chip 7: using photosensitive elements to convert the light image on the photosensitive surface into an electrical signal with a certain ratio; and a rigid-flex board: carrying the chip 7 and connected to external circuitry.

[0089] Furthermore, to achieve the spacer function of coil 30 (i.e., coil spacer 3), the surface strength of coil 30 is increased by applying adhesive to its surface. To achieve the spacer function of coil 30, a rigid substrate can be added to the FPC coil 30 to increase its strength; through-holes can be used to increase the number of turns of coil 30.

[0090] Furthermore, the SMA structure includes an SMA skeleton, a light-shielding structure (e.g., a light-shielding member 54), and a power-conducting network (e.g., a power-conducting part 56).

[0091] SMA frame: Supports and alters the contraction and extension of the SMA structure, adjusting the aperture size.

[0092] Light-shielding structure: The aperture size can be adjusted by following the contraction and expansion of the SMA skeleton, such as black PET film material.

[0093] Power supply network: Powering the SMA skeleton, the contraction and extension of the SMA skeleton can be controlled by a power switch and by adjusting the power level. It is connected through the lens barrel 20 insert, such as a ring spring.

[0094] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0095] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A lens module, characterized in that, include: case; The chip is connected to the housing; A lens, at least partially disposed within the housing, is movably connected to the housing, the lens includes a lens barrel and at least two lens elements disposed within the lens barrel, and the lens is disposed opposite to the chip; A coil spacer is disposed inside the lens barrel, located between at least two of the lenses, so that adjacent lenses are spaced apart. A magnetic structure is provided on the housing, and the magnetic structure is correspondingly arranged with the coil spacer. When the coil spacer is energized, the magnet structure drives the coil spacer to move the lens closer to or away from the chip, so that the lens can focus; The coil spacer includes an inner ring surface and an outer ring surface, and the space enclosed by the inner ring surface allows light to pass through. Along the optical axis of the lens, at least one end face of the coil spacer is provided with a reinforcing plate; The reinforcing plate is provided with through holes; The shape of the reinforcing plate is the same as the shape of the coil spacer.

2. The lens module according to claim 1, characterized in that, At least one of the inner and outer annular surfaces is provided with a wrapping element.

3. The lens module according to claim 1, characterized in that, The coil spacer also includes an additional coil, which is disposed on the reinforcing plate. One end of the additional coil is located on one side of the reinforcing plate, and the other end of the additional coil extends into the other side of the reinforcing plate through the through hole.

4. The lens module according to any one of claims 1 to 3, characterized in that, Also includes: An aperture adjustment component is disposed inside the lens barrel. The aperture adjustment component includes a through hole, which is correspondingly disposed with respect to the lens. The aperture adjustment component can extend and retract to adjust the size of the through hole.

5. The lens module according to claim 4, characterized in that, The aperture adjustment component includes: A telescopic bracket, which is connected to the lens barrel and is capable of extending into the through hole or retracting away from the through hole; A light-shielding component is provided on the telescopic bracket. The side of the light-shielding component away from the lens barrel encloses the through hole. The telescopic bracket is used to drive the light-shielding component to extend or retract, so as to adjust the size of the through hole.

6. The lens module according to claim 5, characterized in that, The telescopic bracket includes a corrugated structure, which extends or contracts to cause the light-shielding element to extend or contract.

7. The lens module according to claim 5, characterized in that, The aperture adjustment component also includes: The power supply unit is connected to the telescopic bracket and is used to control the telescopic bracket to be powered on or off.

8. The lens module according to any one of claims 1 to 3, characterized in that, The lens barrel is provided with a conductive insert, and the coil spacer is connected to the conductive insert.

9. The lens module according to claim 8, characterized in that, Along the extension and retraction direction of the lens, both ends of the conductive insert are exposed in the lens barrel.

10. The lens module according to claim 9, characterized in that, Also includes: An elastic element is disposed between the housing and the lens. The lens is movably connected to the housing through the elastic element, and the elastic element is electrically connected to the conductive insert.

11. The lens module according to any one of claims 1 to 3, characterized in that, Also includes: A filter is disposed on the chip and located on the side of the chip facing the lens; A circuit board, which is electrically connected to the chip.

12. An electronic device, characterized in that, include: The lens module as described in any one of claims 1 to 11.

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