Camera module and electronic device

Abstract

The present application discloses a camera module and an electronic device, relating to the field of imaging technology. The camera module includes a housing, a lens, an image sensor, a carrier bracket, and a driving component. The housing has an accommodation space. The housing includes a magnetic conductive part and a non-magnetic conductive part connected to each other. The lens is mounted on the housing. The image sensor is disposed in the accommodation space through the carrier bracket. The driving component includes a coil and a magnetic member. One of the coil and the magnetic member is disposed on the carrier bracket, and the other is disposed on the magnetic conductive part and is located in the accommodation space. The coil and the magnetic member are disposed opposite to each other. When the coil is powered on, the driving component drives the image sensor to move closer to or away from the lens through the carrier bracket.

Description

Technical Field

[0001] This application belongs to the field of imaging technology, and particularly relates to a camera module and an electronic device. Background Art

[0002] Shooting technology is applied in various aspects of people's work, life, and entertainment. Therefore, consumers' demand for electronic devices that can achieve shooting functions has been increasing, and the clarity of the shooting image has become one of the important factors for consumers to choose electronic devices.

[0003] Currently, most electronic devices use multiple camera modules to meet different shooting needs of users, such as a variety of camera modules including telephoto cameras, wide-angle cameras, and macro cameras. These camera modules use a driving component including a magnet and a coil to achieve the focusing function. However, the housing of the camera module that bears the camera is an iron shell, which causes the camera module to be easily magnetically interfered by adjacent camera modules during focusing, resulting in the failure of the focusing function of the camera module; moreover, during the focusing process of the camera module, some magnetic induction lines scatter outside the housing, resulting in a small driving force of the driving component. Summary of the Invention

[0004] The purpose of the embodiments of this application is to provide a camera module and an electronic device, which can solve the problems of magnetic interference and small driving force during the focusing of the current camera module.

[0005] To solve the above technical problems, this application is implemented as follows:

[0006] In a first aspect, the embodiments of this application provide a camera module, including a housing, a lens, an image sensor, a carrier bracket, and a driving component. The housing has an accommodation space. The housing includes a magnetic conduction part and a non-magnetic conduction part connected to the magnetic conduction part. The lens is installed on the housing, and the image sensor is disposed in the accommodation space through the carrier bracket.

[0007] The driving component includes a coil and a magnetic member. One of the coil and the magnetic member is disposed on the carrier bracket, and the other is disposed on the magnetic conduction part and is located in the accommodation space. The coil and the magnetic member are disposed opposite to each other.

[0008] When the coil is energized, the driving component drives the image sensor to move closer to or away from the lens through the carrier bracket.

[0009] In a second aspect, the embodiments of this application further provide an electronic device, including the above camera module.

[0010] In the embodiment of the present application, the image sensor is mounted on the carrier bracket. When the coil is energized, the driving component drives the image sensor to move closer to or away from the lens through the carrier bracket, so as to achieve the purpose of focusing the camera module. Since the housing includes a connected magnetic guiding part and a non-magnetic guiding part, the magnetic part is arranged in the magnetic guiding part, and the magnetic guiding part can confine a part of the magnetic induction lines of the magnetic part in the accommodating space, thereby increasing the driving force of the driving component, while the non-magnetic guiding part does not have magnetic conductivity, which is beneficial to alleviating the magnetic interference of the camera module. Therefore, the camera module disclosed in the embodiment of the present application can solve the problems of magnetic interference and small driving force existing during the focusing of the current camera module. Description of the Drawings

[0011] Figure 1 is an exploded view of the camera module disclosed in the embodiment of the present application;

[0012] Figure 2 is a schematic structural diagram of the camera module disclosed in the embodiment of the present application;

[0013] Figure 3 is a schematic structural diagram of the housing and the guiding post disclosed in the embodiment of the present application;

[0014] Figure 4 is a schematic structural diagram of the housing disclosed in the embodiment of the present application;

[0015] Figure 5 is a schematic structural diagram of the carrier bracket and the coil disclosed in the embodiment of the present application;

[0016] Figure 6 is an exploded view of the second carrier and the image sensor disclosed in the embodiment of the present application.

[0017] Description of the Reference Numerals:

[0018] 100 - housing, 110 - magnetic guiding part, 111 - first magnetic guiding part, 112 - second magnetic guiding part, 120 - non-magnetic guiding part, 121 - first non-magnetic guiding part, 122 - second non-magnetic guiding part;

[0019] 200 - lens;

[0020] 300 - image sensor;

[0021] 400 - carrier bracket, 410 - guiding hole, 411 - first hole section, 412 - second hole section, 420 - first carrier, 421 - first notch, 422 - elastic limiting part, 430 - second carrier, 431 - second notch, 432 - accommodating groove;

[0022] 500 - Driving component, 510 - Coil, 520 - Magnetic component, 521 - First magnetic component, 522 - Second magnetic component, 530 - First driving component, 540 - Second driving component;

[0023] 600 - Guide post;

[0024] 700 - Circuit board, 710 - Groove;

[0025] 800 - Protective component;

[0026] 900 - Filter. Detailed implementation manners

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0028] The terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally means an "or" relationship between the associated objects before and after.

[0029] The camera module and the electronic device provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings through specific embodiments and their application scenarios.

[0030] Reference Figures 1 to 6, an embodiment of the present application discloses a camera module, which includes a housing 100, a lens 200, an image sensor 300, a carrier bracket 400, and a driving component 500. The housing 100 has an accommodation space, and the housing 100 is used to protect the structures disposed in the accommodation space. The housing 100 includes a magnetic part 110 and a non-magnetic part 120 connected to the magnetic part 110. The magnetic part 110 and the non-magnetic part 120 are respectively located on two adjacent sides of the accommodation space. Optionally, the magnetic part 110 and the non-magnetic part 120 can be an integral structure or a split structure. When the magnetic part 110 and the non-magnetic part 120 are an integral structure, it is convenient for the installation of the housing 100 and can improve the aesthetics of the housing 100 at the same time; when the magnetic part 110 and the non-magnetic part are a split structure, it is convenient for disassembly and maintenance. The lens 200 is installed on the housing 100, and the lens 200 is used to obtain images of the external environment. The image sensor 300 is disposed in the accommodation space through the carrier bracket 400, and the image sensor 300 is used to convert the optical image obtained by the lens 200 into a digital signal.

[0031] The driving component 500 includes a coil 510 and a magnetic part 520. One of the coil 510 and the magnetic part 520 is disposed on the carrier bracket 400, and the other is disposed on the magnetic part 110 and is located in the accommodation space. The coil 510 and the magnetic part 520 are disposed opposite to each other, that is, the coil 510 and the magnetic part 520 are in a non-contact driving manner, which has the characteristics of no wear and convenient control. When the coil 510 is energized, the driving component 500 drives the image sensor 300 to move closer to or away from the lens 200 through the carrier bracket 400, so as to achieve the purpose of focusing, which is beneficial to improving the shooting image quality of the camera module. In this embodiment, the lens 200 can be fixed, and the image sensor 300 moves relative to the lens 200. Therefore, the back focus of the lens 200 can be set relatively short, the reliability of the lens 200 is relatively high, the overall size of the camera module is relatively small, and the driving force required to be output by the driving component 500 is relatively small, and the power consumption of the camera module is lower. It should be noted that the driving component 500 can drive the image sensor 300 to move closer to the lens 200 through the carrier bracket 400, or can drive the image sensor 300 to move away from the lens 200 through the carrier bracket 400, so as to achieve focusing in two opposite directions.

[0032] In the embodiment of the present application, since the housing 100 includes a connected magnetic conductive part 110 and a non-magnetic conductive part 120, the magnetic part 520 is arranged on the magnetic conductive part 110. The magnetic conductive part 110 can confine a part of the magnetic induction lines of the magnetic part 520 within the accommodation space, thereby increasing the driving force of the driving assembly 500. The non-magnetic conductive part 120 does not have magnetic conductivity, which is beneficial to alleviating the magnetic interference of the camera module. Therefore, the camera module disclosed in the embodiment of the present application can solve the problems of magnetic interference and small driving force existing during the focusing of the current camera module.

[0033] In an alternative embodiment, the number of the magnetic parts 520 is at least two, including a first magnetic part 521 and a second magnetic part 522. In the moving direction of the carrier bracket 400, the first magnetic part 521 and the second magnetic part 522 are stacked. The magnetism of the end of the first magnetic part 521 facing the coil 510 and the end of the second magnetic part 522 facing the coil 510 can be the same or opposite. When the magnetism of the end of the first magnetic part 521 facing the coil 510 is opposite to that of the end of the second magnetic part 522 facing the coil 510, the magnetic induction lines emitted by the first magnetic part 521 and the second magnetic part 522 form a closed magnetic field to reduce the emission of the magnetic induction lines, thereby further reducing the magnetic interference of the camera module. Moreover, the first magnetic part 521 and the second magnetic part 522 are stacked, which is beneficial to reducing the size of the camera module.

[0034] In another alternative implementation, the camera module further includes a guide post 600, and the guide post 600 extends along the moving direction of the carrier bracket 400. Optionally, the cross-sectional shape of the guide post 600 can be circular, square, polygonal, etc., and no specific setting is made here. The cross-section here refers to the section perpendicular to the moving direction of the carrier bracket 400. The guide post 600 is disposed in the accommodation space, and the carrier bracket 400 is provided with a guide hole 410. One end of the guide post 600 is connected to the housing 100. Optionally, the guide post 600 and the housing 100 can be connected by fixed connection methods such as welding and bonding, and no specific limitation is made here. Further optionally, an installation groove is provided on the bottom wall of the accommodation space, and the end of the guide post 600 can be disposed in the installation groove to increase the connection area between the guide post 600 and the carrier bracket 400, improve the connection stability of the guide post 600, and reduce the resistance when the carrier bracket 400 moves, thereby reducing the power consumption and heat generation of the camera module. The other end of the guide post 600 is inserted into the guide hole 410. Optionally, the outer peripheral surface of the guide post 600 contacts the inner wall of the guide hole 410, so as to improve the stability of the carrier bracket 400 during movement. In this embodiment, when the carrier bracket 400 moves away from or close to the lens 200, the carrier bracket 400 cooperates with the guide post 600 through the guide hole 410 to prevent the carrier bracket 400 from tilting, thereby improving the focusing accuracy of the camera module. In addition, the space occupied by the guide post 600 is small, so the size of the camera module can be reduced.

[0035] The number of the guide posts 600 can be one or at least two. When the number of the guide posts 600 is one, the size of the guide post 600 needs to be set larger to improve the guiding performance of the guide post 600, but this will increase the setting difficulty of the guide post 600. Based on this, optionally, the number of the guide posts 600 is at least two, and the guide posts 600 are spaced along the edge of the carrier bracket 400. At this time, the sizes of the guide posts 600 can be set smaller, thereby reducing the setting difficulty of the guide posts 600. Further optionally, when the number of the guide posts 600 is at least two, it includes a first guide post and a second guide post. The central axis of the first guide post, the central axis of the second guide post and the central axis of the carrier bracket 400 are in the same plane to improve the uniformity of the acting force on the carrier bracket 400, thereby further improving the movement accuracy of the carrier bracket 400.

[0036] Furthermore, the number of the guide posts 600 can be three, four, or even more, so that the guiding effect of the guide posts 600 is better.

[0037] The number of the magnetic conductive parts 110 and the number of the driving components 500 can both be only one. In another alternative embodiment, the number of the magnetic conductive parts 110 is at least two, including a first magnetic conductive part 111 and a second magnetic conductive part 112, the first magnetic conductive part 111 and the second magnetic conductive part 112 are oppositely arranged, the number of the driving components 500 is at least two, including a first driving component 530 and a second driving component 540, the first driving component 530 is arranged on the first magnetic conductive part 111, and the second driving component 540 is arranged on the second magnetic conductive part 112. During the focusing process of the camera module, the lens 200 is driven by at least two driving components 500 simultaneously to increase the driving force acting on the carrier bracket 400, thereby improving the focusing efficiency; moreover, the first driving component 530 and the second driving component 540 arranged on both sides of the carrier bracket 400 drive simultaneously, which can prevent the carrier bracket 400 from tilting during the movement.

[0038] In a further alternative embodiment, the number of the non-magnetic conductive parts 120 is at least two, including a first non-magnetic conductive part 121 and a second non-magnetic conductive part 122, the first non-magnetic conductive part 121 and the second non-magnetic conductive part 122 are oppositely arranged, a first space is formed between the first non-magnetic conductive part 121 and the carrier bracket 400, a second space is formed between the second non-magnetic conductive part 122 and the carrier bracket 400, and the driving components 500 can be arranged in the first space and the second space, or the driving components 500 are located outside the first space and the second space. When the driving components 500 are located outside the first space and the second space, the driving components 500 are only arranged in the space formed between the magnetic conductive parts 110 and the carrier bracket 400, and the driving components 500 are not arranged in the space formed between the non-magnetic conductive parts 120 and the carrier bracket 400, so as to reduce the number of the driving components 500 on the premise of meeting the driving requirements, greatly reducing the size of the camera module. At the same time, such an arrangement can make the divergence degree of the magnetic field smaller, so the magnetic interference existing during the focusing of the camera module can be further reduced. In the embodiment where the number of the magnetic conductive parts 110 is at least two, each magnetic conductive part 110 and each non-magnetic conductive part 120 are alternately arranged in sequence along the circumferential direction of the accommodating space, that is, the first magnetic conductive part 111, the first non-magnetic conductive part 121, the second magnetic conductive part 112 and the second non-magnetic conductive part 122 are connected end to end in sequence to form the accommodating space.

[0039] In another optional embodiment, the camera module further includes a circuit board 700 and a protective member 800. Optionally, the circuit board 700 may be a hard circuit board, a flexible circuit board, or a hard-soft circuit board, which is not specifically limited here. The image sensor 300 is electrically connected to the circuit board 700, and the protective member 800 is arranged on the circuit board 700, and the protective member 800 is located on the side of the circuit board 700 away from the image sensor 300, and the protective member 800 is used to protect the circuit board 700. When the circuit board 700 is a hard-soft circuit board, the circuit board 700 includes a first part, a second part, and a third part connected in sequence, wherein the first part is electrically connected to the mainboard of the electronic device, and the third part is electrically connected to the image sensor 300. The first part and the third part are both hard structures, and the second part is a flexible structure, so that during the focusing process, the third part deforms with the movement of the image sensor 300.

[0040] Optionally, the protective member 800 and the supporting bracket 400 form a receiving space, and the side wall of the supporting bracket 400 is provided with an opening, through which one end of the circuit board 700 extends out of the receiving space, while the other end of the circuit board 700 is located in the receiving space to avoid interference with other structures.

[0041] The support bracket 400 includes a first support member 420 and a second support member 430 which are separately arranged and connected. Optionally, the first support member 420 and the second support member 430 can be detachably connected by bonding or other methods, which can not only ensure the movement stability of the support bracket 400, but also facilitate disassembly. Of course, other connection methods can also be used, which are not specifically limited here. In the moving direction of the support bracket 400, the first support member 420 and the second support member 430 are stacked, and the coil 510 is arranged on the first support member 420. Optionally, the coil 510 and the first support member 420 can be connected by bonding or other methods, which are not specifically limited here. The image sensor 300 is arranged on the second support member 430. Optionally, the outer peripheral surface of the image sensor 300 and the second support member 430 can be connected by bonding or other methods, which are not specifically limited here. When the first carrier 420 and the second carrier 430 are stacked, the connection area between the second carrier 430 and the first carrier 420 is larger, so as to facilitate the arrangement of the second carrier 430 and improve the connection strength between the two.

[0042] Further optionally, the surface of the second carrier 430 facing the first carrier 420 may be a flat surface, or a receiving groove 432 is formed on the surface of the second carrier 430 facing the first carrier 420, and the image sensor 300 is disposed in the receiving groove 432, which is beneficial to reducing the thickness of the camera module in the moving direction of the carrier bracket 400, and can make the entire camera module more compact, which is beneficial to improving the space utilization rate of the camera module. In an embodiment where the camera module further includes a guide post 600, the guide hole 410 includes a first hole section 411 and a second hole section 412 arranged coaxially. The first hole section 411 is formed in the first carrier 420, and the second hole section 412 is formed in the second carrier 430. The other end of the guide post 600 is inserted into the first hole section 411 and the second hole section 412 at the same time. At this time, the cooperation area between the guide post 600 and the carrier bracket 400 is relatively large, thereby improving the guiding effect.

[0043] A groove 710 is formed on the surface of the circuit board 700 facing the image sensor 300, and the second carrier 430 is located in the groove 710, thereby reducing the thickness of the camera module in the moving direction of the carrier bracket 400, and being beneficial to improving the stability of the second carrier 430. At the same time, the entire camera module can be made more compact, which is beneficial to improving the space utilization rate of the camera module. Of course, the second carrier 430 may also be directly disposed on the surface of the circuit board 700 facing the image sensor 300, but the effect is not as good as setting the second carrier 430 in the groove 710.

[0044] Further optionally, a first notch 421 is provided at the edge of the first carrier 420, and a second notch 431 is provided at the edge of the second carrier 430. The second notch 431 is opposite to the first notch 421. At this time, the size of the entire carrier bracket 400 is smaller, which is beneficial to reducing the weight of the carrier bracket 400, so as to facilitate the driving assembly 500 to flexibly drive the carrier bracket 400 to move.

[0045] Optionally, the surface of the first carrier 420 facing the lens 200 is the first surface, and the first surface has an elastic limiting portion 422, and the elastic limiting portion 422 is located at the edge of the first surface. During the movement of the carrier bracket 400 towards the lens 200, the elastic limiting portion 422 can prevent the carrier bracket 400 from colliding with the housing 100 to buffer the inertial force of the carrier bracket 400, thereby protecting the housing 100. Optionally, the number of the elastic limiting portions 422 is at least two, so as to improve the limiting performance of the elastic limiting portion 422. The elastic limiting portions 422 are arranged at intervals, and the elastic limiting portions 422 are arranged opposite to each other in pairs, so as to further improve the limiting performance of the elastic limiting portion 422.

[0046] In an alternative embodiment, the camera module further includes a filter 900. The filter 900 is disposed on the carrier bracket 400, and the filter 900 is located between the lens 200 and the image sensor 300, and is configured to filter the light entering the lens 200 to improve the utilization rate of light.

[0047] In an alternative embodiment, the coil 510 is disposed on the outer peripheral surface of the carrier bracket 400. The central axis of the coil 510 is perpendicular to the moving direction of the carrier bracket 400. The size of the outer peripheral surface is relatively large, which is beneficial to increasing the driving assembly 500, thereby increasing the driving force. The magnetic member 520 is disposed on the side wall of the accommodation space. With such an arrangement of the coil 510 and the carrier bracket 400 in this embodiment, the camera module can be made more compact, thereby further improving the space utilization rate of the camera module.

[0048] Based on the camera module disclosed in the embodiments of the present application, the embodiments of the present application further provide an electronic device, including the camera module described in any of the above embodiments.

[0049] In an alternative embodiment, the number of camera modules is at least two. The non-magnetic parts 120 of adjacent camera modules are disposed opposite to each other, so that the distance between the magnetic parts 110 of adjacent camera modules is relatively far. Since the non-magnetic part 120 does not have magnetism, the magnetic interference between adjacent camera modules is reduced, and thus the effectiveness of the focusing function of each camera module is improved.

[0050] The electronic device disclosed in the embodiments of the present application may be an electronic device such as a smart phone, a tablet computer, an e-book reader, a wearable device (such as a smart watch), an electronic game console, etc. The embodiments of the present application do not specifically limit the types of electronic devices.

[0051] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them fall within the protection scope of the present application.

Claims

1. A camera module, characterized in that, It includes a housing (100), a lens (200), an image sensor (300), a carrier bracket (400), and a driving component (500). The housing (100) has an accommodation space. The housing (100) includes a magnetic conductive part (110) and a non-magnetic conductive part (120) connected to the magnetic conductive part (110). The number of the magnetic conductive parts (110) is at least two, including a first magnetic conductive part (111) and a second magnetic conductive part (112). The first magnetic conductive part (111) and the second magnetic conductive part (112) are oppositely arranged. The number of the non-magnetic conductive parts (120) is at least two, including a first non-magnetic conductive part (121) and a second non-magnetic conductive part (122). The first non-magnetic conductive part (121) and the second non-magnetic conductive part (122) are oppositely arranged. The lens (200) is mounted on the housing (100), and the image sensor (300) is arranged in the accommodation space through the carrier bracket (400). The driving component (500) includes a coil (510) and a magnetic part (520). One of the coil (510) and the magnetic part (520) is arranged on the carrier bracket (400), and the other is arranged on the magnetic conductive part (110) and is located in the accommodation space. The coil (510) and the magnetic part (520) are oppositely arranged. When the coil (510) is powered on, the driving component (500) drives the image sensor (300) to move closer to or away from the lens (200) through the carrier bracket (400).

2. The camera module according to claim 1, characterized in that, The number of the magnetic parts (520) is at least two, including a first magnetic part (521) and a second magnetic part (522). In the moving direction of the carrier bracket (400), the first magnetic part (521) and the second magnetic part (522) are stacked. One end of the first magnetic part (521) facing the coil (510) has the opposite magnetic property to one end of the second magnetic part (522) facing the coil (510).

3. The camera module according to claim 1, characterized in that, The camera module further includes a guiding post (600). The guiding post (600) is arranged in the accommodation space. The carrier bracket (400) is provided with a guiding hole (410). One end of the guiding post (600) is connected to the housing (100), and the other end of the guiding post (600) is inserted into the guiding hole (410). The guiding post (600) extends along the moving direction of the carrier bracket (400).

4. The camera module according to claim 3, characterized in that, The number of the guiding posts (600) is at least two, and the guiding posts (600) are spaced apart along the edge of the carrier bracket (400).

5. The camera module according to claim 1, characterized in that, The number of the driving components (500) is at least two, including a first driving component (530) and a second driving component (540). The first driving component (530) is arranged on the first magnetic conductive part (111), and the second driving component (540) is arranged on the second magnetic conductive part (112).

6. The camera module according to claim 5, characterized in that, A first space is formed between the first non-magnetic part (121) and the carrier bracket (400), a second space is formed between the second non-magnetic part (122) and the carrier bracket (400), and the driving assembly (500) is located outside the first space and the second space.

7. The camera module according to claim 1, characterized in that, The camera module further includes a circuit board (700) and a protective member (800). The image sensor (300) is electrically connected to the circuit board (700). The protective member (800) is disposed on the circuit board (700), and the protective member (800) is located on a side of the circuit board (700) facing away from the image sensor (300). The carrier bracket (400) includes a first carrier member (420) and a second carrier member (430) that are separately arranged and connected. In the moving direction of the carrier bracket (400), the first carrier member (420) and the second carrier member (430) are stacked. The coil (510) is disposed on the first carrier member (420), the image sensor (300) is disposed on the second carrier member (430), a groove (710) is formed on a surface of the circuit board (700) facing the image sensor (300), and the second carrier member (430) is located in the groove (710).

8. The camera module according to claim 7, characterized in that, A first notch (421) is provided at an edge of the first carrier member (420), and a second notch (431) is provided at an edge of the second carrier member (430). The second notch (431) is opposite to the first notch (421).

9. The camera module according to claim 1, characterized in that, The coil (510) is disposed on an outer peripheral surface of the carrier bracket (400), and the magnetic member (520) is disposed on a side wall of the accommodation space.

10. An electronic device, characterized in that, Including the camera module according to any one of claims 1-9.

11. The electronic device according to claim 10, characterized in that, The number of the camera modules is at least two, and the non-magnetic parts of adjacent camera modules are disposed opposite to each other.

Images