Camera module and electronic device

Abstract

The application discloses a camera module and an electronic device, and belongs to the field of optical imaging. The camera module comprises a first lens barrel, a second lens barrel, a first magnet and a second magnet. The first lens barrel and the second lens barrel are arranged along a first direction, and at least one lens is carried in each of the first lens barrel and the second lens barrel; the optical axis of the first lens barrel and the optical axis of the second lens barrel are parallel to the first direction; and the first lens barrel and the second lens barrel are slidingly connected along the first direction. The first magnet is fixedly connected with the first lens barrel, and the second magnet is fixedly connected with the second lens barrel; the first magnet and the second magnet are oppositely distributed along the first direction. At least one of the first magnet and the second magnet is an electromagnet; the electromagnet is configured to control the first magnet and the second magnet to be attracted to each other and / or control the first magnet and the second magnet to repel each other, so as to drive the relative movement between the first lens barrel and the second lens barrel.

Description

Technical Field

[0001] This application relates to the field of optical imaging technology, and in particular to a camera module and electronic device. Background Technology

[0002] Camera modules are mainly used for image information acquisition and are widely used in electronic products such as mobile phones and security equipment.

[0003] Due to the limited internal space of mobile phones, mobile phone cameras usually use a combination of multiple fixed-focus lenses, each with a different focal length. The zoom function of the mobile phone is achieved by switching between different fixed-focus lenses, making it difficult to zoom on a single lens. Utility Model Content

[0004] This application provides a camera module and electronic device. It solves the problem of existing technologies making it difficult to achieve zoom on a single lens. The technical solution is as follows:

[0005] On the one hand, a camera module is provided, the camera module including: a first lens barrel, a second lens barrel, a first magnet and a second magnet;

[0006] The first lens barrel and the second lens barrel are arranged along a first direction, and each of the first lens barrel and the second lens barrel carries at least one lens; the optical axis of the first lens barrel and the optical axis of the second lens barrel are both parallel to the first direction; and the first lens barrel and the second lens barrel are slidably connected along the first direction.

[0007] The first magnet is fixedly connected to the first lens barrel, and the second magnet is fixedly connected to the second lens barrel; the first magnet and the second magnet are distributed relative to each other in the first direction;

[0008] Wherein, at least one of the first magnet and the second magnet is an electromagnet; the electromagnet is configured to: control the first magnet and the second magnet to attract each other, and / or control the first magnet and the second magnet to repel each other, so as to drive the first lens barrel and the second lens barrel to move relative to each other.

[0009] The first and second magnets drive the first and second lens barrels to slide relative to each other along a first direction via electromagnetic induction. This causes the lenses inside the first and second lens barrels to move relative to each other along the first direction, thereby changing the focal length of the camera module and achieving optical zoom at different magnifications. Controlling the electromagnets with current controls the relative movement of the first and second lens barrels, facilitating motion control. Furthermore, the electromagnetic drive for the relative movement of the first and second lens barrels results in a simple structure, small space occupation, and sensitive electromagnetic drive response with high positional accuracy.

[0010] In some possible implementations, the camera module further includes: a first elastic element sandwiched between the first lens barrel and the second lens barrel;

[0011] The electromagnet is configured to: control the first magnet and the second magnet to attract each other, thereby driving the first lens barrel and the second lens barrel to move towards each other, so that the first elastic element can be compressed; the electromagnet is also configured to: control the first magnet and the second magnet to stop attracting each other, so that the first lens barrel and the second lens barrel can move away from each other under the rebound action of the first elastic element.

[0012] By combining the elastic effect of the first elastic element with electromagnetic drive, it not only buffers and smooths the movement process, but also enhances the ability of the first and second lens barrels to remain in any position.

[0013] In some possible implementations, the second lens barrel is slidably sleeved outside the first lens barrel, and there is an annular receiving cavity between the second lens barrel and the first lens barrel, with the first elastic element located inside the annular receiving cavity;

[0014] Wherein, the two ends of the first elastic element in the first direction abut against the first lens barrel and the second lens barrel, respectively.

[0015] The first elastic element is accommodated and constrained by the annular receiving cavity. The first elastic element has a good positioning effect between the first lens barrel and the second lens barrel and is difficult to shift, which helps to ensure the motion accuracy of the first lens barrel and its distance from the second lens barrel.

[0016] In some possible implementations, the outer circumferential edge of the first lens barrel has a first stepped groove, and the first stepped groove is located at the end of the first lens barrel near the second lens barrel; the inner circumferential edge of the second lens barrel has a second stepped groove, and the second stepped groove is located at the end of the second lens barrel near the first lens barrel; the first stepped groove and the second stepped groove form the annular receiving cavity;

[0017] In the first direction, one end of the first elastic element abuts against the side of the first stepped groove, and the other end of the first elastic element abuts against the side of the second stepped groove.

[0018] While the second lens barrel is nested with the first lens barrel, an annular storage cavity is formed by the first and second stepped grooves, making the overall structure of the lens assembly compact. Moreover, as the first and second lens barrels move relative to each other, the annular storage cavity remains sealed, resulting in better positioning of the first elastic element within the annular storage cavity.

[0019] In some possible implementations, the outer wall of the second lens barrel has a guide groove; the guide groove extends along the first direction and passes through the end face of the second lens barrel facing the first lens barrel;

[0020] Wherein, at least a portion of the first magnet and at least a portion of the second magnet are both located within the guide groove, and the electromagnet is configured to control the first magnet to move within the guide groove.

[0021] The guide groove accommodates at least a portion of the first magnet and at least a portion of the second magnet, which helps to save space. Moreover, the guide groove provides guidance for the first magnet, which helps to improve the movement accuracy of the first magnet relative to the second magnet and avoid jamming.

[0022] In some possible implementations, the outer wall of the first lens barrel has a limiting protrusion; the outer wall of the second lens barrel also has a hollow area, the hollow area is connected to the guide groove, and both the hollow area and the guide groove penetrate the side wall of the second lens barrel.

[0023] At least a portion of the limiting protrusions are located within the hollow area, and in the first direction, the width of the limiting protrusions is smaller than the width of the hollow area.

[0024] By limiting the movement between the limiting protrusion and the hollow area, the two zoom states of the lens assembly can be switched by simply switching between the two limiting states of the limiting protrusion and the hollow area. This enables open-loop control without the need for drive feedback, and the overall structure is simple and low-cost.

[0025] In some possible implementations, the camera module further includes: a first connector; the first connector is fixedly connected to the outer wall of the first lens barrel, and the first connector is fixedly connected to the first magnet;

[0026] And / or, the camera module further includes: a second connector; the second connector is fixedly connected to the outer wall of the second lens barrel, and the second connector is fixedly connected to the second magnet.

[0027] The first magnet is mounted on the first lens barrel via the first connector, and the second magnet is mounted on the second lens barrel via the second connector, reducing assembly difficulty and maintenance costs.

[0028] In some possible implementations, a plurality of first magnets are provided along the circumference of the first lens barrel; and a plurality of second magnets are provided along the circumference of the second lens barrel.

[0029] In this configuration, a plurality of the first magnets are arranged in a one-to-one correspondence with a plurality of the second magnets.

[0030] By arranging multiple first magnets and second magnets, it is beneficial to keep the first and second lens barrels coaxial under stress, thus avoiding jamming caused by the axis deviating from each other.

[0031] In some possible implementations, the camera module further includes: a base and a second driving component; the end of the second lens barrel opposite to the first lens barrel in the first direction is movably connected to the base; the second driving component is located on the base and is configured to drive the first lens barrel and the second lens barrel as a whole to move along the first direction.

[0032] The second driving component drives the lens assembly to move along the first direction, which makes the lens assembly move as a whole, so that the distance between the camera module and the photosensitive chip can be adjusted to achieve focus and make the image clear.

[0033] On the other hand, an electronic device is provided, including the aforementioned camera module and a device body, wherein the camera module is mounted on the device body. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the structure of a camera module provided in an embodiment of this application;

[0036] Figure 2 This is a schematic diagram of the lens assembly provided in an embodiment of this application in a zoom state;

[0037] Figure 3 This is a schematic diagram of the lens assembly provided in this application embodiment in another zoom state;

[0038] Figure 4 yes Figure 3 The lens assembly shown is a cross-sectional view along the AA direction;

[0039] Figure 5 This is an exploded view of a lens assembly provided in an embodiment of this application;

[0040] Figure 6 This is an exploded view of another lens assembly provided in an embodiment of this application;

[0041] Figure 7 This is an exploded view of a camera module provided in an embodiment of this application;

[0042] Figure 8 This is an exploded view of another camera module provided in an embodiment of this application;

[0043] Figure 9 This is a schematic diagram of the housing of the camera module provided in the embodiments of this application.

[0044] Figure label:

[0045] X, first direction;

[0046] 100. Lens assembly; 101. First lens barrel; 102. Second lens barrel; 103. Lens; 104. Annular storage cavity; 105. First stepped groove; 106. Second stepped groove; 107. Guide groove; 108. Limiting protrusion; 109. Hollowed-out area; 110. First connecting seat; 111. Second connecting seat; 112. First support part; 113. First positioning groove; 114. Positioning step; 115. Second support part; 116. Second positioning groove; 117. Mounting step;

[0047] 200. Base; 201. Mounting cavity; 202. Through hole; 203. Base; 204. Outer shell; 205. First boss; 206. Second boss;

[0048] 300. First drive component; 301. First magnet; 302. Second magnet;

[0049] 400. Second drive assembly; 401. Bearing ring; 402. Coil; 403. Magnetic component;

[0050] 500. First elastic element;

[0051] 600. Second elastic element; 601. Limiting ring; 602. Connecting part;

[0052] 700, Third elastic element. Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0054] Figure 1 This is a schematic diagram of the structure of a camera module provided in an embodiment of this application. Please refer to it. Figure 1 This application provides a camera module, which may include a lens assembly 100 and a first driving assembly 300.

[0055] The lens assembly 100 may include a first lens barrel 101 and a second lens barrel 102 arranged along a first direction X, wherein each of the first lens barrel 101 and the second lens barrel 102 carries at least one lens 103. That is, the first lens barrel 101 and the lens 103 therein form a lens group, and the second lens barrel 102 and the lens 103 therein form another lens group. The number of lenses 103 in each lens group may be one or more.

[0056] This camera module can be used in electronic devices as a camera module for those devices. It can also be installed in other electronic devices that require image acquisition; this application does not limit this.

[0057] The camera module may also include a photosensitive chip and a circuit board. The photosensitive chip is connected to the circuit board, with its light-incident side facing the light-outceasing side of the second lens barrel 102. When the electronic device takes a picture, light reflected from the surface of an external object enters the lens assembly 100 from the light-incident side of the first lens barrel 101 and exits from the light-outceasing side of the second lens barrel 102, striking the photosensitive chip. The photosensitive chip senses and collects the light passing through the lens assembly 100 and generates corresponding image information. The circuit board can then transmit the image information generated by the photosensitive chip to the electronic device equipped with this camera module, allowing the electronic device to display the corresponding image. It should be noted that... Figure 1 The image sensor and circuit board are not shown in the image.

[0058] The optical axes of the first lens barrel 101 and the second lens barrel 102 can both be parallel to the first direction X, and the first lens barrel 101 and the second lens barrel 102 can be slidably connected along the first direction X. In this way, the first lens barrel 101 and the second lens barrel 102 can change their relative positions along the first direction X, thereby adjusting the relative movement positions of the lens 103 in the first lens barrel 101 and the lens 103 in the second lens barrel 102 along the first direction X, and realizing the zoom of the lens assembly 100.

[0059] The first driving component 300 can be located on the lens assembly 100. This results in a compact structure and reduces the size of the camera module. The first driving component 300 can be configured to drive the first lens barrel 101 to move relative to the second lens barrel 102 along a first direction X. That is, the first driving component 300 provides power and changes the position of the first lens barrel 101 relative to the second lens barrel 102.

[0060] Figure 2 This is a schematic diagram of the lens assembly 100 provided in this application embodiment in a zoom state; Figure 3 This is a schematic diagram of the lens assembly 100 provided in this application embodiment in another zoom state.

[0061] Please refer to Figure 2 and Figure 3 In this embodiment, the first driving assembly 300 includes a first magnet 301 and a second magnet 302 relatively distributed along a first direction X. This facilitates relative movement of the first magnet 301 and the second magnet 302 along the first direction X. The first magnet 301 is fixedly connected to the first lens barrel 101, and the second magnet 302 is fixedly connected to the second lens barrel 102. This ensures that the magnetic forces between the first magnet 301 and the second magnet 302 act synchronously on the first lens barrel 101 and the second lens barrel 102.

[0062] In this embodiment, at least one of the first magnet 301 and the second magnet 302 can be an electromagnet. In some embodiments, both the first magnet 301 and the second magnet 302 can be electromagnets. In other embodiments, one of the first magnet 301 and the second magnet 302 is an electromagnet, and the other is a permanent magnet. Thus, the electromagnet can be controlled by current, thereby controlling the relative movement of the first lens barrel 101 and the second lens barrel 102, facilitating motion control. The electromagnet can include a magnetic core and a coil, with the coil wound around the sidewall of the magnetic core. The electromagnet can be electrically connected to the circuit board of the camera module.

[0063] The electromagnet can be configured to either control the first magnet 301 and the second magnet 302 to attract each other, and / or control the first magnet 301 and the second magnet 302 to repel each other, thereby driving relative movement between the first lens barrel 101 and the second lens barrel 102. By electromagnetically driving the relative movement of the first lens barrel 101 and the second lens barrel 102, the first drive assembly 300 has a simple structure, occupies little space, and exhibits sensitive electromagnetic drive response and high positional accuracy.

[0064] When the electromagnets are configured to either attract the first magnet 301 and the second magnet 302, and repel the first magnet 301 and the second magnet 302, the magnetic force of the attraction between the first magnet 301 and the second magnet 302 drives the first lens barrel 101 and the second lens barrel 102 to move closer together, and the magnetic force of the repulsion between the first magnet 301 and the second magnet 302 drives the first lens barrel 101 and the second lens barrel 102 to move away from each other. In this way, the relative positions of the first lens barrel 101 and the second lens barrel 102 in opposite directions along the first direction X are controlled by electromagnetic drive.

[0065] When the electromagnets are configured such that the first magnet 301 and the second magnet 302 attract each other, the magnetic force of the attraction between the first magnet 301 and the second magnet 302 drives the first lens barrel 101 and the second lens barrel 102 to move closer together. Conversely, other driving methods can be used to drive the first lens barrel 101 and the second lens barrel 102 away from each other. For example, when the first magnet 301 and the second magnet 302 stop attracting each other, an elastic element can drive the first lens barrel 101 and the second lens barrel 102 away from each other.

[0066] When the electromagnets are configured such that the first magnet 301 and the second magnet 302 repel each other, the magnetic force of the mutual repulsion between the first magnet 301 and the second magnet 302 drives the first lens barrel 101 and the second lens barrel 102 away from each other. Conversely, other driving methods can be used to drive the first lens barrel 101 and the second lens barrel 102 closer together. For example, when the first magnet 301 and the second magnet 302 stop repelling each other, an elastic element can drive the first lens barrel 101 and the second lens barrel 102 closer together.

[0067] In summary, in the camera module provided in this application embodiment, the first magnet and the second magnet drive the first lens barrel and the second lens barrel to slide relative to each other along a first direction through electromagnetic induction. This causes the lenses inside the first lens barrel and the lenses inside the second lens barrel to move relative to each other along the first direction, thereby changing the focal length of the camera module and achieving optical zoom at different magnifications. Controlling the electromagnets with current controls the relative movement of the first and second lens barrels, facilitating motion control. Furthermore, by electromagnetically driving the relative movement of the first and second lens barrels, the first magnet and the second magnet have simple structures, occupy little space, and exhibit sensitive electromagnetic drive response and high positional accuracy.

[0068] Figure 4 yes Figure 3 The lens assembly 100 shown is in cross-sectional view along the AA direction, as follows: Figure 4 As shown, in some possible implementations, the camera module further includes a first elastic element 500 sandwiched between the first lens barrel 101 and the second lens barrel 102. In some embodiments, the first elastic element 500 is sandwiched between two adjacent ends of the first lens barrel 101 and the second lens barrel 102. In some possible implementations, the first elastic element 500 can be an elastic ring, such as foam or a rubber ring.

[0069] The electromagnet is configured to: control the first magnet 301 and the second magnet 302 to attract each other, thereby driving the first lens barrel 101 and the second lens barrel 102 to move towards each other, so that the first elastic element 500 can be compressed; the electromagnet is also configured to: control the first magnet 301 and the second magnet 302 to stop attracting each other, so that the first lens barrel 101 and the second lens barrel 102 can move away from each other under the rebound action of the first elastic element 500.

[0070] In this way, the magnetic force between the first magnet 301 and the second magnet 302, and the elastic force of the first elastic element 500, act together on the first lens barrel 101 and the second lens barrel 102. The magnetic force overcomes the elastic force, driving the first lens barrel 101 and the second lens barrel 102 to move towards each other. The elastic force, when the magnetic attraction disappears, drives the first lens barrel 101 and the second lens barrel 102 to move away from each other. Based on electromagnetic drive, combined with the elastic effect of the first elastic element 500, it not only buffers and smooths the movement process, but also enhances the ability of the first lens barrel 101 and the second lens barrel 102 to remain in any position.

[0071] It should be noted that, in other possible implementations, the first drive component 300 can also be a stepper motor or a piezoelectric ceramic, as long as it can realize the relative movement of the first lens barrel 101 and the second lens barrel 102 in the first direction X.

[0072] See also Figure 4 In some possible implementations, the second lens barrel 102 is slidably sleeved outside the first lens barrel 101, and an annular receiving cavity 104 is provided between the second lens barrel 102 and the first lens barrel 101, with the first elastic element 500 located within the annular receiving cavity 104. In this way, the annular receiving cavity 104 accommodates and constrains the first elastic element 500, resulting in good positioning of the first elastic element 500 between the first lens barrel 101 and the second lens barrel 102, making it difficult for it to shift, which helps to ensure the movement accuracy of the first lens barrel 101 relative to the second lens barrel 102.

[0073] In this design, the first elastic element 500 has two ends in contact with the first lens barrel 101 and the second lens barrel 102, respectively, in the first direction X. Thus, the first elastic element 500 provides opposing forces to the first lens barrel 101 and the second lens barrel 102. When the magnetic force is greater than the elastic force, the elastic force smoothly facilitates the movement of the first lens barrel 101 towards the second lens barrel 102. When the magnetic force and the elastic force are in balance, the first lens barrel 101 can stop relative to the second lens barrel 102 and remain in any position. When the elastic force is greater than the magnetic force, the elastic force drives the first lens barrel 101 and the second lens barrel 102 away from each other, reducing energy consumption.

[0074] Figure 5 This application provides an exploded view of a lens assembly 100 according to an embodiment. (Combined with...) Figure 4 and Figure 5 As shown, in some possible implementations, the outer circumferential edge of the first lens barrel 101 has a first stepped groove 105, and the first stepped groove 105 is located at the end of the first lens barrel 101 near the second lens barrel 102. The inner circumferential edge of the second lens barrel 102 has a second stepped groove 106, and the second stepped groove 106 is located at the end of the second lens barrel 102 near the first lens barrel 101. The first stepped groove 105 and the second stepped groove 106 form the aforementioned annular receiving cavity 104.

[0075] In this way, while the second lens barrel 102 and the first lens barrel 101 are nested together, an annular receiving cavity 104 is formed by the first stepped groove 105 and the second stepped groove 106. The overall structure of the lens assembly 100 is compact and small in size. Moreover, the first stepped groove 105 and the second stepped groove 106 form a closed annular receiving cavity 104. Even if the first lens barrel 101 and the second lens barrel 102 move relative to each other, the annular receiving cavity 104 remains closed. The positioning effect of the first elastic element 500 within the annular receiving cavity 104 is better, and it is difficult for it to shift. To form a closed annular receiving cavity 104, the first stepped groove 105 and the second stepped groove 106 are always located within the overlapping area of ​​the first lens barrel 101 and the second lens barrel 102.

[0076] In the first direction X, one end of the first elastic element 500 abuts against the side of the first stepped groove 105, and the other end of the first elastic element 500 abuts against the side of the second stepped groove 106. In this way, the first elastic element 500 applies elastic force to the first lens barrel 101 through the side of the first stepped groove 105, and applies elastic force to the second lens barrel 102 through the side of the second stepped groove 106.

[0077] In some embodiments, the bottom of the first stepped groove 105 and the second stepped groove 106 can both be perpendicular to the first direction X, so that the force exerted by the first elastic element 500 on the bottom wall of the groove in the first direction X is perpendicular to the bottom of the groove.

[0078] Figure 6 This is an exploded view of another lens assembly 100 provided in an embodiment of this application. Figure 2 , 5 As shown in Figure 6, in some possible implementations, the outer wall of the second lens barrel 102 has a guide groove 107; the guide groove 107 extends along the first direction X and penetrates the end face of the second lens barrel 102 facing the first lens barrel 101. That is, one end of the guide groove 107 in the first direction X penetrates the end face of the second lens barrel 102 in the first direction X.

[0079] In this configuration, at least a portion of the first magnet 301 and at least a portion of the second magnet 302 are located within the guide groove 107. The electromagnet is configured to control the movement of the first magnet 301 within the guide groove 107. Thus, the guide groove 107 accommodates at least a portion of the first magnet 301 and at least a portion of the second magnet 302, saving space. Furthermore, the guide groove 107 provides guidance for the first magnet 301, improving the movement accuracy of the first magnet 301 relative to the second magnet 302, thereby ensuring smooth movement of the first lens barrel 101 and the second lens barrel 102 and preventing jamming.

[0080] like Figure 2 , 3As shown in Figure 5, in some possible implementations, the outer wall of the first lens barrel 101 has a limiting protrusion 108; the outer wall of the second lens barrel 102 also has a hollow area 109, which communicates with the guide groove 107, and both the hollow area 109 and the guide groove 107 penetrate the side wall of the second lens barrel 102. At least a portion of the limiting protrusion 108 is located within the hollow area 109, and in the first direction X, the width of the limiting protrusion 108 is smaller than the width of the hollow area 109.

[0081] In this way, the guide groove 107 is connected to the hollow area 109. When assembling the first lens barrel 101 and the second lens barrel 102, the limiting protrusion 108 can be guided into the hollow area 109 through the guide groove 107, which facilitates assembly. The limiting protrusion 108 and the hollow area 109 mutually limit each other, thereby restricting the relative movement of the first lens barrel 101 and the second lens barrel 102 in the first direction X.

[0082] like Figure 2 and 3 As shown, when the limiting protrusion 108 abuts against one of the two sidewalls of the hollowed-out area 109 in the first direction X, the limiting protrusion 108 and the hollowed-out area 109 are mutually positioned, thereby positioning the first lens barrel 101 and the second lens barrel 102 relative to each other. Thus, the limiting protrusion 108 can have two limiting states at the two sidewalls, allowing the first lens barrel 101 and the second lens barrel 102 to have two zoom states corresponding to the limiting states. At this time, there is no need for closed-loop control of the first drive assembly 300; the first magnet 301 and the second magnet 302 only need to drive the first lens barrel 101 and the second lens barrel 102 to either limiting state to maintain the lens assembly 100 in a zoom state. In related technologies, continuous zoom often involves closed-loop control, resulting in complex structures and high costs. This solution, however, only requires switching between the two zoom states of the lens assembly 100 in the two limiting states of the limiting protrusion 108 and the hollowed-out area 109, achieving open-loop control without drive feedback, resulting in a simple overall structure and low cost.

[0083] like Figure 2 , 3 As shown in Figure 6, in some possible implementations, the camera module further includes a first connecting seat 110. The first connecting seat 110 is fixedly connected to the outer wall of the first lens barrel 101, and is also fixedly connected to the first magnet 301. That is, the first magnet 301 is mounted on the first lens barrel 101 via the first connecting seat 110. The first connecting seat 110 serves as an intermediate carrier, allowing the first magnet 301 to be pre-mounted on it before being mounted onto the first lens barrel 101, reducing the complexity of directly mounting the first magnet 301 onto the first lens barrel 101 and lowering assembly difficulty. When repair or replacement of the first magnet 301 is required, the first connecting seat 110 can be directly disassembled without damaging the first lens barrel 101, reducing maintenance costs.

[0084] In some possible implementations, the camera module further includes a second connector 111. The second connector 111 is fixedly connected to the outer wall of the second lens barrel 102 and is fixedly connected to the second magnet 302. The function of the second connector 111 is similar to that of the first connector 110, and will not be described again here.

[0085] like Figure 2 , 3 As shown in Figure 6, in some embodiments, the first connecting seat 110 has a first support portion 112, and the first magnet 301 is fixedly connected to the first support portion 112. The electromagnet is configured to control the movement of the first magnet 301 to drive the first support portion 112 in and out of the guide groove 107. In this way, the first support portion 112 supports the first magnet 301 and can cooperate with the guide groove 107 to avoid structural interference.

[0086] like Figure 2 , 3 As shown in Figure 6, in some embodiments, the second connecting seat 111 has a second support portion 115, and the second magnet 302 is fixedly connected to the second support portion 115. The second support portion 115 is at least partially located within the guide groove 107. In this way, the second support portion 115 supports the second magnet 302 within the guide groove 107.

[0087] In one feasible embodiment, the first support portion 112 and the second support portion 115 are arranged opposite to each other in the first direction X, the first magnet 301 is connected to the side of the first support portion 112 facing the second support portion 115, and the second magnet 302 is connected to the side of the second support portion 115 facing the first support portion 112, so that the first magnet 301 and the second magnet 302 are arranged opposite to each other in the first direction X.

[0088] like Figure 2 , 3 As shown in Figure 6, in some embodiments, the first connecting seat 110 has an L-shaped first positioning groove 113, and the first lens barrel 101 has an L-shaped positioning step 114. The first positioning groove 113 and the positioning step 114 are mutually engaged and positioned. In this way, the positioning accuracy of the first connecting seat 110 on the first lens barrel 101 is better.

[0089] like Figure 2 , 3 As shown in Figure 6, in some embodiments, the second connecting seat 111 has an L-shaped second positioning groove 116, which is engaged with the side wall of the guide groove 107 at one end. In this way, the second connecting seat 111 has good positioning accuracy on the second lens barrel 102.

[0090] like Figures 2-6As shown, in some possible implementations, a plurality of first magnets 301 are provided along the circumference of the first lens barrel 101. A plurality of second magnets 302 are provided along the circumference of the second lens barrel 102. The plurality of first magnets 301 and the plurality of second magnets 302 are arranged in a one-to-one correspondence. This helps to keep the first lens barrel 101 and the second lens barrel 102 coaxial under stress, avoiding jamming caused by misalignment of their axes.

[0091] In some embodiments, two first magnets 301 and two second magnets 302 are provided and are axially symmetrically arranged on both sides of the lens assembly 100. In other embodiments, three, four, or five first magnets 301 and two second magnets 302 may be provided respectively.

[0092] In some possible implementations, the first lens barrel 101 and / or the second lens barrel 102 have mounting steps 117, and the lens 103 abuts against the mounting steps 117, thereby positioning the lens 103 within the first lens barrel 101 and / or the second lens barrel 102.

[0093] Figure 7 This is an exploded view of a camera module provided in an embodiment of this application; Figure 8 This is an exploded view of another camera module provided in an embodiment of this application. Figure 7 and Figure 8 As shown, in some possible implementations, the camera module also includes: a base 200 and a second drive assembly 400.

[0094] The second lens barrel 102 is movably connected to the base 200 at its end facing away from the first lens barrel 101 in the first direction X. A movable connection means that the second lens barrel 102 and the base 200 are connected and can move relative to each other. For example, it can be an elastic connection or a hinged connection. The second drive assembly 400 can be located on the base 200 and can be configured to drive the entire lens assembly 100 (i.e., the entire first lens barrel 101 and the second lens barrel 102) to move along the first direction X. In this way, the second drive assembly 400 provides power and changes the position of the entire lens assembly 100 relative to the base 200, thereby adjusting the distance between the lens assembly 100 and the image sensor for focusing.

[0095] In this way, the first driving component 300 drives the first lens barrel 101 and the second lens barrel 102 to slide relative to each other along the first direction X, causing the lenses 103 in the first lens barrel 101 and the second lens barrel 102 to move relative to each other along the first direction X, thereby changing the focal length of the camera module and achieving optical zoom at different magnifications. The second driving component 400 drives the lens assembly 100 to move as a whole along the first direction X, making it easier for the camera module and the photosensitive chip to adjust the distance, achieve focusing, and make the image clear. Focusing refers to adjusting the focal distance of the lens assembly 100 to ensure that the subject is clearly displayed in the image. Zooming refers to adjusting the focal length of the lens assembly 100 to change the angle of view of the shooting image, thereby bringing the subject closer or farther away. Sliding along the first direction X allows for quick and efficient adjustment.

[0096] In some possible implementations, the aforementioned photosensitive chip can be mounted on the base 200.

[0097] In some possible implementations, the second drive assembly 400 includes: a support ring 401, a coil 402, and a magnetic component 403; the support ring 401 is sleeved and fixed on the outer wall of the second lens barrel 102 and movably connected to the base 200; the coil 402 is wound and fixed on the outer wall of the support ring 401; the magnetic component 403 is fixedly connected to the base 200. The magnetic component 403 can be a permanent magnet.

[0098] The coil 402 can be electrically connected to the circuit board of the camera module. When the coil 402 is energized, the magnetic field generated by the coil 402 interacts with the magnetic field generated by the magnetic component 403. This allows the coil 402 to control the relative movement of the coil 402 and the magnetic component along a first direction X, thereby controlling the overall movement of the lens assembly 100 relative to the base 200 along the first direction X, thus achieving focusing of the camera module. In this application, the speed of movement of the lens assembly 100 can be changed by altering the magnitude of the current in the coil 402, and the direction of movement of the lens assembly 100 can also be changed by altering the direction of the current in the coil 402.

[0099] It should be noted that, in other possible implementations, the second drive component 400 can also be a stepper motor or a piezoelectric ceramic, as long as it can enable the lens assembly 100 to move as a whole in the first direction X.

[0100] In some possible implementations, the base 200 has a mounting cavity 201 and a through hole 202 communicating with the mounting cavity 201. Part of the second lens barrel 102 is located inside the mounting cavity 201, and part of it extends out of the mounting cavity 201 from the through hole 202. By accommodating part of the lens assembly 100 in the mounting cavity 201, the overall height of the camera module can be further and effectively reduced, thereby reducing the thickness at the location where the camera module is integrated in the electronic device, and consequently reducing the overall thickness of the electronic device integrating the camera module.

[0101] The camera module also includes a second elastic element 600 and a third elastic element 700, both of which are located within the mounting cavity 201 and connected to the base 200. Specifically, in the first direction X, a support ring 401 is located between the second elastic element 600 and the third elastic element 700, with its two sides in the first direction X abutting against the second elastic element 600 and the third elastic element 700, respectively.

[0102] In this way, the second elastic element 600 and the third elastic element 700 elastically connect the support ring 401 to the base 200. When the coil 402 is energized, the coil 402 interacts with the magnetic component 403, allowing the support ring 401 to move despite the elasticity of the second elastic element 600 and the third elastic element 700. When the coil 402 is de-energized, the support ring 401 can move to its initial position under the action of the second elastic element 600 and the third elastic element 700, achieving automatic reset.

[0103] In some embodiments, the base 200 includes a base 203 and a housing 204. The housing 204 covers the base 203 and is fixedly connected to the base 203, forming the aforementioned receiving cavity. The top side of the housing 204 has the aforementioned through hole 202 to allow the second lens barrel 102 to pass through the through hole 202. Two magnetic components 403 are located within the receiving cavity and are both fixedly connected to the base 203.

[0104] The second elastic element 600 may include a limiting ring 601 and a connecting portion 602, wherein multiple connecting portions 602 are provided along the periphery of the limiting ring 601. One end of the connecting portion 602 is connected to the limiting ring 601, and the other end is connected to the base 200. The limiting ring 601 is abutted against one side of the bearing ring 401.

[0105] Thus, when the second drive assembly 400 drives the lens assembly 100 to move as a whole, the limiting ring 601 of the second elastic element 600 is always limited to one side of the support ring 401, and the connecting part 602 elastically connects the limiting ring 601 to the base 200, providing the support ring 401 with a spring force for resetting. The third elastic element 700 can have the same structure as the second elastic element 600, and can be understood by referring to the second elastic element 600, so it will not be described again here.

[0106] Figure 9 This is a schematic diagram of the structure of the housing 204 of the camera module provided in an embodiment of this application. Figure 9 As shown, in some possible implementations, the base 203 has a first boss 205, and the outer shell 204 has a second boss 206. Both the first boss 205 and the second boss 206 are located within the receiving cavity and protrude towards each other along the first direction X. The end of the connecting portion 602 away from the limiting ring 601 is clamped between the first boss 205 and the second boss 206. The first boss 205, the second boss 206, and the connecting portion 602 can correspond one-to-one.

[0107] like Figure 9 As shown, in some embodiments, four first bosses 205 and four second bosses 206 are distributed at the four corners of the rectangular base 200. The second elastic element 600 and the third elastic element 700 have the same structure, each having four connecting portions 602. One connecting portion 602 of the second elastic element 600 and one connecting portion 602 of the third elastic element 700 are clamped between a first boss 205 and a second boss 206.

[0108] In summary, in the camera module provided in this application embodiment, the first magnet and the second magnet drive the first lens barrel and the second lens barrel to slide relative to each other along a first direction through electromagnetic induction. This causes the lenses inside the first lens barrel and the lenses inside the second lens barrel to move relative to each other along the first direction, thereby changing the focal length of the camera module and achieving optical zoom at different magnifications. Controlling the electromagnets with current controls the relative movement of the first and second lens barrels, facilitating motion control. Furthermore, by electromagnetically driving the relative movement of the first and second lens barrels, the first magnet and the second magnet have simple structures, occupy little space, and exhibit sensitive electromagnetic drive response and high positional accuracy.

[0109] This application also provides an electronic device, which may include, but is not limited to, devices with cameras such as webcams, smartphones, smartwatches, and tablets. The electronic device may include the aforementioned camera module and a device body, with the camera module mounted on the device body. In some embodiments, a base may be fixedly connected to the device body, thereby assembling the camera module into the electronic device.

[0110] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0111] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A camera module, characterized in that, The camera module includes: a first lens barrel (101), a second lens barrel (102), a first magnet (301), and a second magnet (302); The first lens barrel (101) and the second lens barrel (102) are arranged along a first direction (X), and each of the first lens barrel (101) and the second lens barrel (102) carries at least one lens (103); the optical axis of the first lens barrel (101) and the optical axis of the second lens barrel (102) are both parallel to the first direction (X); and the first lens barrel (101) and the second lens barrel (102) are slidably connected along the first direction (X); The first magnet (301) is fixedly connected to the first lens barrel (101), and the second magnet (302) is fixedly connected to the second lens barrel (102); the first magnet (301) and the second magnet (302) are distributed relative to each other in the first direction (X); Wherein, at least one of the first magnet (301) and the second magnet (302) is an electromagnet; the electromagnet is configured to: control the first magnet (301) and the second magnet (302) to attract each other, and / or control the first magnet (301) and the second magnet (302) to repel each other, so as to drive the first lens barrel (101) and the second lens barrel (102) to move relative to each other.

2. The camera module according to claim 1, characterized in that, The camera module further includes a first elastic element (500) sandwiched between the first lens barrel (101) and the second lens barrel (102); The electromagnet is configured to: control the first magnet (301) and the second magnet (302) to attract each other, thereby causing the first mirror barrel (101) and the second mirror barrel (102) to move towards each other, so that the first elastic element (500) can be compressed; the electromagnet is also configured to: control the first magnet (301) and the second magnet (302) to stop attracting each other, so that the first mirror barrel (101) and the second mirror barrel (102) can move away from each other under the rebound action of the first elastic element (500).

3. The camera module according to claim 2, characterized in that, The second lens barrel (102) is slidably sleeved on the outside of the first lens barrel (101), and there is an annular receiving cavity (104) between the second lens barrel (102) and the first lens barrel (101), and the first elastic element (500) is located in the annular receiving cavity (104); The first elastic element (500) abuts against the first lens barrel (101) and the second lens barrel (102) at its two ends in the first direction (X), respectively.

4. The camera module according to claim 3, characterized in that, The outer ring edge of the first lens barrel (101) has a first stepped groove (105), and the first stepped groove (105) is located at the end of the first lens barrel (101) near the second lens barrel (102); the inner ring edge of the second lens barrel (102) has a second stepped groove (106), and the second stepped groove (106) is located at the end of the second lens barrel (102) near the first lens barrel (101); the first stepped groove (105) and the second stepped groove (106) form the annular receiving cavity (104); In the first direction (X), one end of the first elastic element (500) abuts against the side of the first stepped groove (105), and the other end of the first elastic element (500) abuts against the side of the second stepped groove (106).

5. The camera module according to claim 1, characterized in that, The outer wall of the second lens barrel (102) has a guide groove (107); the guide groove (107) extends along the first direction (X) and passes through the end face of the second lens barrel (102) facing the first lens barrel (101); Wherein, at least a portion of the first magnet (301) and at least a portion of the second magnet (302) are located within the guide groove (107), and the electromagnet is configured to control the first magnet (301) to move within the guide groove (107).

6. The camera module according to claim 5, characterized in that, The first lens barrel (101) has a limiting protrusion (108) on its outer wall; the second lens barrel (102) also has a hollow area (109) on its outer wall, the hollow area (109) is connected to the guide groove (107), and the hollow area (109) and the guide groove (107) both penetrate the side wall of the second lens barrel (102); At least a portion of the limiting protrusions (108) are located within the hollow area (109), and in the first direction (X), the width of the limiting protrusions (108) is smaller than the width of the hollow area (109).

7. The camera module according to any one of claims 1-6, characterized in that, The camera module further includes: a first connector (110); the first connector (110) is fixedly connected to the outer wall of the first lens barrel (101), and the first connector (110) is fixedly connected to the first magnet (301); And / or, the camera module further includes: a second connector (111); the second connector (111) is fixedly connected to the outer wall of the second lens barrel (102), and the second connector (111) is fixedly connected to the second magnet (302).

8. The camera module according to any one of claims 1-6, characterized in that, A plurality of first magnets (301) are provided along the circumference of the first lens barrel (101); a plurality of second magnets (302) are provided along the circumference of the second lens barrel (102); In this configuration, a plurality of the first magnets (301) are arranged in a one-to-one correspondence with a plurality of the second magnets (302).

9. The camera module according to any one of claims 1-6, characterized in that, The camera module further includes: a base (200) and a second driving component (400); the second lens barrel (102) is movably connected to the base (200) at one end opposite to the first lens barrel (101) in the first direction (X); the second driving component (400) is located on the base (200) and is configured to drive the first lens barrel (101) and the second lens barrel (102) to move as a whole along the first direction (X).

10. An electronic device, characterized in that, The device includes the camera module as described in any one of claims 1-9, and a device body, wherein the camera module is mounted on the device body.

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