Lens module and electronic device

Abstract

The application discloses a lens module and electronic equipment, the lens module comprises: a shell, the shell is provided with a mounting cavity; a carrier, the carrier is movably arranged in the mounting cavity; a lens, the lens is arranged on the carrier; a deformation driving element, the deformation driving element is arranged on the carrier, the deformation driving element is connected with the shell, the deformation driving element comprises a plurality of deformation sections, the plurality of deformation sections are distributed at intervals in the extension direction of the deformation driving element, each deformation section can be deformed in different time periods and drive the carrier to move relative to the shell to realize lens anti-shake.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of electronic product anti-shake, and particularly relates to a lens module and electronic equipment. BACKGROUND

[0002] At present, some motors are used to realize anti-shake by one-way shape memory effect of shape memory alloy. The one-way shape memory effect refers to that the shape memory alloy is in twin martensite state, is deformed by external force, is changed into non-twin martensite, and is changed into austenite by heating. In the process of changing from martensite to austenite, the shape of the shape memory alloy changes accordingly. Then, the austenite is changed into martensite again by cooling.

[0003] There are two very critical changes in this process. First, by heating, the martensite is changed into austenite, and the shape is changed, so that the driving force can be generated. Second, by cooling, the austenite is changed into martensite, and the driving can be performed again. Through the two critical changes, it can be known that the driving of the shape memory alloy has a cooling process. Then the cooling time becomes the limitation of the application of the shape memory alloy. In the cooling time, the shape memory alloy cannot realize anti-shake.

[0004] Because the shape memory alloy can be driven again only after cooling, the anti-shake motor with the shape memory alloy as the driving source has a low anti-shake frequency and can only prevent low-frequency shaking. Once the frequency is high, the shape memory alloy motor cannot complete the anti-shake process. SUMMARY

[0005] The present application aims to provide a lens module and electronic equipment, which can at least solve the problem of low anti-shake frequency of the motor in the prior art.

[0006] In order to solve the above technical problems, the present application is implemented as follows:

[0007] In a first aspect, the present application provides a lens module, comprising: a shell, an installation cavity is arranged in the shell; a carrier, the carrier is movably arranged in the installation cavity; a lens, the lens is arranged on the carrier; a deformation driving member, the deformation driving member is arranged around the carrier, the deformation driving member is connected with the shell, the deformation driving member comprises a plurality of deformation segments, the plurality of deformation segments are distributed at intervals in the extension direction of the deformation driving member, each deformation segment can be deformed in different time periods and drive the carrier to move relative to the shell to realize lens anti-shake.

[0008] In the embodiment of the present application, the deformation driving member is arranged on the carrier, two ends of the deformation material are connected with the shell respectively, the deformation driving member adopts a segmented structure and is composed of multiple deformation segments. By arranging multiple deformation segments, each deformation segment can deform in different time periods, thereby driving the carrier to move and completing multiple anti-shake actions, effectively improving the anti-shake frequency of the lens module.

[0009] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0010] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings.

[0011] Figure 1 is a structural schematic diagram of a lens module according to an embodiment of the present application;

[0012] Figure 2 is a sectional view of a lens module according to an embodiment of the present application;

[0013] Figure 3 is a connection schematic diagram of a deformation driving member of a lens module according to an embodiment of the present application;

[0014] Figure 4 is Figure 3 is a local enlarged view of region A in FIG. 8;

[0015] Figure 5 is a structural schematic diagram of a deformation driving member of a lens module according to an embodiment of the present application;

[0016] Figure 6 is another structural schematic diagram of a deformation driving member of a lens module according to an embodiment of the present application.

[0017] Reference Signs:

[0018] Lens module 100;

[0019] Shell 10; circuit board 11; clamping leg 12;

[0020] Carrier 20; connecting column 21;

[0021] Lens 30;

[0022] Deformation driving member 40; first deformation segment 41; second deformation segment 42; third deformation segment 43; insulating segment 44; flexible circuit layer 45. DETAILED DESCRIPTION

[0023] Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are merely intended to explain the present application, and should not be understood as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of the present application.

[0024] In the description of the present application and the claims, the features involving the terms "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally means that the front and rear associated objects are in an "or" relationship.

[0025] In the description of the present application, it should be understood that, if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0026] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] The lens module 100 provided by the embodiments of the present application will be described in detail below in combination with the drawings and through specific embodiments and application scenarios.

[0028] As shown in FIGS. Figure 1 and Figure 2 The lens module 100 according to the embodiments of the present application includes a housing 10, a carrier 20, a lens 30 and a deformation driving member 40.

[0029] Specifically, the shell 10 is internally provided with a mounting cavity. The carrier 20 is movably arranged in the mounting cavity. The lens 30 is arranged on the carrier 20. The deformation driving member 40 is arranged around the carrier 20, and the deformation driving member 40 is connected with the shell 10. The deformation driving member 40 comprises a plurality of deformation segments, which are spaced apart in the extension direction of the deformation driving member 40. Each deformation segment can be deformed in different time periods, and drive the carrier 20 to move relative to the shell 10 to realize the anti-shake of the lens 30.

[0030] In other words, as shown in Figure 1 and Figure 2 The lens module 100 according to the embodiment of the present application mainly comprises a shell 10, a carrier 20, a lens 30 and a deformation driving member 40. The shell 10 is internally provided with a mounting cavity. The carrier 20 is arranged in the mounting cavity, and the carrier 20 can move in the mounting cavity. The lens 30 is arranged on the carrier 20. The shell 10, the carrier 20 and the deformation driving member 40 constitute a motor, and the lens 30 and the carrier 20 can be bonded together to constitute a rotor of the motor. The first end of the deformation driving member 40 is connected with the shell 10, the deformation driving member 40 is arranged around the carrier 20, and the second end of the deformation driving member 40 is electrically connected with the shell 10. The first end and the second end are two ends of the deformation driving member 40. The deformation driving member 40 can be deformed by being electrically connected with the shell 10. The first end and the second end of the deformation driving member 40 are spaced apart on the shell 10. The deformation driving member 40 mainly comprises a plurality of deformation segments, which are designed in a segmented structure (as shown in Figure 5 Each deformation segment can be deformed in different time periods to drive the carrier 20 to move in the mounting cavity of the shell 10, thereby realizing the anti-shake of the lens 30.

[0031] In the present application, a time-division segmented method is adopted. Different deformation segments are driven to deform in different driving time periods. For example, one of the deformation segments is driven to perform anti-shake in the first time period, another deformation segment is driven to perform anti-shake in the second time period, and another deformation segment is driven to perform anti-shake in the third time period. Thus, in the three time periods, only one anti-shake action can be completed, but in the present application, the deformation driving member 40 with the time-division segmented structure can complete three anti-shake actions in the three time periods, without waiting for one of the deformation segments to cool down before performing the next anti-shake. Thus, the anti-shake frequency can be greatly improved to realize high-frequency anti-shake.

[0032] Therefore, according to the lens module 100 of the embodiment of the present application, the deformation driving member 40 is arranged on the carrier 20, and the two ends of the deformation material are connected with the shell 10 respectively. The deformation driving member 40 adopts a segmented structure and is composed of a plurality of deformation segments. By arranging a plurality of deformation segments, each deformation segment can deform in different time periods to complete multiple anti-shake actions, thereby effectively improving the anti-shake frequency of the lens module 100.

[0033] According to an embodiment of the present application, the deformation driving member 40 is a shape memory alloy wire.

[0034] That is, the deformation driving member 40 can adopt a shape memory alloy (SMA, Sharp Memory Alloy) in the form of a wire, which can be referred to as an SMA wire. The initial state of the SMA wire is a non-twin martensite after being stretched by an external force. At this time, the SMA wire is heated by power supply and becomes austenite. This process is accompanied by deformation of the SMA wire, so that a driving force can be generated to drive the mover of the lens module 100 to perform an anti-shake action. However, after the SMA wire becomes austenite, it needs to be cooled before being heated and deformed again. When it is not cooled, it cannot be deformed again by heating, and thus cannot generate a driving force. The present application solves the problem that the SMA wire cannot deform and generate a driving force when it is not cooled by adopting a segmented design of the SMA wire, thereby effectively improving the anti-shake frequency of the lens module 100.

[0035] According to an embodiment of the present application, the inner wall of the shell 10 is provided with a plurality of connection positions, and the plurality of connection positions are arranged at intervals in the shell 10. The deformation driving member 40 is a plurality of deformation driving members, each of which is arranged on the carrier 20, and the first end and the second end of each deformation driving member 40 are connected with different two connection positions in the shell 10 respectively.

[0036] In other words, the inner wall surface of the shell 10 is provided with a plurality of connection positions for connecting the deformation driving member 40. The connection position can be understood as the connection point of the deformation driving member 40 and the shell 10. The plurality of connection positions are arranged at intervals in the shell 10. For example, Figure 2As shown, the deformation driving member 40 (SMA wire) can be adopted in multiple, each deformation driving member 40 can be respectively wound on the carrier 20 from different directions, and the first end and the second end of each deformation driving member 40 are respectively connected with two different connection positions in the shell 10. In the present application, four SMA wires can be taken as an example, the initial position of each SMA wire can be set at an angle of the inner side of the shell 10, and then pass through two corners of the carrier 20, and then return to the other angle of the same inner side of the shell 10 as the initial position. Among them, the four SMA wires (deformation driving member 40) can drive the mover (carrier 20 and lens 30) of the lens module 100 to act in four directions. By supplying power to the SMA wire, the SMA wire can be driven to act, thereby driving the mover of the lens module 100 to complete the anti-shake operation.

[0037] Of course, the specific number of deformation driving members 40 can be set according to actual needs, which will not be described in detail in the present application.

[0038] In some specific embodiments of the present application, the plurality of deformation segments include a first deformation segment 41, a second deformation segment 42 and a third deformation segment 43, and an insulating segment 44 is arranged between the first deformation segment 41, the second deformation segment 42 and the third deformation segment 43, and the insulating segment 44 is telescopic.

[0039] That is, as shown, Figure 5 The plurality of deformation segments include a first deformation segment 41, a second deformation segment 42 and a third deformation segment 43, wherein an insulating segment 44 is arranged between the first deformation segment 41, the second deformation segment 42 and the third deformation segment 43, and the insulating segment 44 is telescopic. The insulating segment 44 can be made of an insulating material with high rigidity and elasticity, and can be used for insulation and connection of the plurality of deformation segments. By arranging the insulating segment 44 between the first deformation segment 41, the second deformation segment 42 and the third deformation segment 43, the first deformation segment 41, the second deformation segment 42 and the third deformation segment 43 can be segmented and powered, which facilitates controlling different deformation segments to deform according to actual needs, thereby realizing high-frequency anti-shake.

[0040] The first deformation segment 41, the second deformation segment 42 and the third deformation segment 43 can be symmetrically distributed, and the symmetric two first deformation segments 41 and the symmetric two second deformation segments 42 are separated by the adjacent two connecting columns 21 of the carrier 20. By the method of time division and segment driving, high-frequency driving of the lens module 100 can be realized. Of course, for those skilled in the art, the number of deformation driving members 40 can be designed according to actual needs, which will not be described in detail in the present application.

[0041] The insulation section 44 can be made of a material with poor thermal conductivity as a connecting material, so as to prevent strong temperature interference between the first deformation section 41, the second deformation section 42 and the third deformation section 43, thereby affecting the driving accuracy. The function can be achieved by using an elastomer material with high rigidity, such as a rubber material. The SMA material and the rubber material are connected together by using a gluing connection mode at the connecting position, so that when the SMA material (deformation driving member 40) is deformed and shrinks, the rubber material (insulation section 44) is also pulled to act.

[0042] According to an embodiment of the present application, the outer circumferential surface of the deformation driving member 40 is covered with a flexible circuit layer 45.

[0043] That is, as shown in Figure 6 the outer circumferential surface of the deformation driving member 40 can be covered with a flexible circuit layer 45. In order to time-divisionally supply power to the SMA wires of different sections, the present application can further wind a flexible circuit layer 45 around the SMA wires to supply power. The cross section of the deformation driving member 40 (SMA wire) of the present application is two layers, the inner layer is the SMA section or the insulation section 44, and the outer layer is the flexible circuit layer 45. By winding the flexible circuit layer 45 around the SMA wire and the rubber insulation section 44 (rubber wire), the positions of the SMA wire and the rubber wire can be fixed, so that they are not prone to dislocation. By winding a flexible circuit layer 45 around the outer wall surface of the SMA wire, when the SMA wire is stretched and deformed, the flexible circuit layer 45 can be simultaneously deformed, and the position dislocation does not occur.

[0044] The SMA wire and the rubber wire are connected by gluing, so that the connection relationship between them is more stable. The flexible circuit layer 45 can provide circuits for the SMA wires of different sections by wire design. By this design, the SMA wires of different sections can be time-divisionally supplied with current, so that high-frequency driving of the SMA wire can be achieved.

[0045] According to an embodiment of the present application, the carrier 20 is a square body, and the carrier 20 is provided with arc-shaped connecting columns 21 at four corners thereof, the connecting columns 21 protrude from the carrier 20, and the deformation driving member 40 is arranged around the adjacent two connecting columns 21.

[0046] In other words, as shown in Figures 1 to 3 the carrier 20 can be designed as a square body, the carrier 20 is provided with arc-shaped connecting columns 21 at four corners thereof, the connecting columns 21 protrude from the carrier 20, and the deformation driving member 40 is arranged around the adjacent two connecting columns 21. The deformation driving member 40 (SMA wire) can frictionally slide relative to the connecting columns 21 on the carrier 20. Of course, the deformation driving member 40 can also be directly fixed on the connecting columns 21.

[0047] According to one embodiment of the present application, the plurality of deformation driving members 40 are respectively arranged around any two adjacent connecting columns 21.

[0048] That is, the plurality of deformation driving members 40 can be respectively arranged around any two adjacent connecting columns 21. Taking four deformation driving members 40 as an example, as shown in FIG. 4, the SMA wires as a whole can present a symmetrical structure. The beginning and end of the SMA wire are firmly fixed to one side inside the shell 10 of the lens module 100. Then, the middle part (the third segment) of the SMA wire is tightly hung at the corner of the carrier 20 (on the two adjacent connecting columns 21). The four SMA wires are simultaneously hung at different corners of the carrier 20, which can keep the balance of the carrier 20. By stretching of a certain SMA wire, the driving action can be completed. The connection between the SMA wire and the corner of the carrier 20 can be a friction connection, a friction sliding relative to the corner, or a fixed connection. Figure 2

[0049] In some specific embodiments of the present application, the shell 10 is a square shell, the shell 10 includes the circuit boards 11, the circuit boards 11 are respectively arranged at the four corner positions of the shell 10, and the first end and the second end of the deformation driving member 40 are respectively connected with the two adjacent circuit boards 11 on the shell 10.

[0050] That is, as shown in FIG. 5, the shell 10 can be designed as a square shell, the shell 10 includes the circuit boards 11, the circuit boards 11 can be respectively arranged at the four corner positions of the shell 10, and the first end and the second end of the deformation driving member 40 are respectively connected with the two adjacent circuit boards 11 on the shell 10, so as to facilitate the energization of the deformation driving member 40. Figures 1 to 3

[0051] According to one embodiment of the present application, at least two clamping legs 12 are arranged on each circuit board 11, the end of the deformation driving member 40 is arranged in the clamping leg 12, and the deformation driving member 40 is welded with the circuit board 11.

[0052] In other words, referring to FIG. 6, at least two clamping legs 12 can be arranged on each circuit board 11, the end of the deformation driving member 40 is arranged in the clamping leg 12, and the deformation driving member 40 can be welded with the circuit board 11. The four corners of the shell 10 can be bonded with the circuit boards 11, the circuit boards 11 are arranged with a certain interval gap, thereby forming the clamping leg 12, the SMA wire is welded at the clamping leg 12, the electrical connection between the SMA wire and the shell 10 can be completed, and the conduction of the circuit is realized. Figure 4

[0053] ​​​In summary, according to the lens module 100 of the embodiment of the present application, the deformation driving member 40 is arranged on the carrier 20, and the two ends of the deformation material are electrically connected with the shell 10 respectively. The deformation driving member 40 adopts a segmented structure and is composed of multiple deformation segments. By arranging multiple deformation segments, each deformation segment can deform in different time periods to complete multiple anti-shake actions, effectively improving the anti-shake frequency of the lens module 100.

[0054] Of course, other structures of the lens module 100 and working principles thereof can be understood and implemented by those skilled in the art, and will not be described in detail in the present application.

[0055] According to a second aspect of the present application, an electronic device is provided, which comprises the lens module 100 in the above embodiments. The electronic device can be a mobile phone, a computer or other electronic products, and the electronic device is provided with a control chip, which can control the deformation driving member 40 in the lens module 100 to deform in time segments, thereby realizing high-frequency anti-shake of the electronic device.

[0056] Of course, other structures of the electronic device and working principles thereof can be understood and implemented by those skilled in the art, and will not be described in detail in the present application.

[0057] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0058] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A lens module, characterized in that, include: A housing, wherein a mounting cavity is provided within the housing; A carrier, which is movably disposed within the mounting cavity; The lens is mounted on the carrier; A deformation drive component is wound around the carrier and connected to the housing. The deformation drive component includes multiple deformation segments that are spaced apart in the extension direction of the deformation drive component. Each deformation segment can deform during different driving time periods and drive the carrier to move relative to the housing to achieve lens image stabilization. The plurality of deformable segments include a first deformable segment, a second deformable segment, and a third deformable segment, wherein an insulating segment is provided between the first deformable segment, the second deformable segment, and the third deformable segment, and the insulating segment is retractable.

2. The lens module according to claim 1, characterized in that, The deformation driving component is a shape memory alloy wire.

3. The lens module according to claim 1, characterized in that, The inner wall of the housing is provided with multiple connection positions, which are spaced apart within the housing. There are multiple deformation driving components, each of which is wound around the carrier, and the first end and the second end of each deformation driving component are respectively connected to two different connection positions within the housing.

4. The lens module according to claim 1, characterized in that, The outer periphery of the deformation drive component is covered with a flexible circuit layer.

5. The lens module according to claim 1, characterized in that, The carrier is a square body, and an arc-shaped connecting post is provided at each of the four corners of the carrier. The connecting post protrudes from the carrier, and the deformation driving member is wound around two adjacent connecting posts.

6. The lens module according to claim 5, characterized in that, The plurality of the deformation driving components are respectively wound around any two adjacent connecting posts.

7. The lens module according to claim 1, characterized in that, The housing is a square shell, and the housing includes circuit boards, which are respectively located at the four corners of the housing. The first end and the second end of the deformation drive are respectively connected to two adjacent circuit boards on the housing.

8. The lens module according to claim 7, characterized in that, Each of the circuit boards has at least two clamps, and the end of the deformation drive is located inside the clamps and is soldered to the circuit board.

9. An electronic device, characterized in that, Includes the lens module according to any one of claims 1-8.

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