Camera module and electronic equipment

Abstract

The embodiment of the invention provides a camera module and electronic equipment, the camera module comprises a driving device and a photosensitive element, and the camera module is provided with a first chamber and a second chamber; the driving device can generate displacement under the condition of laser irradiation, and the driving device is used for driving the volume of the first cavity to be reduced, so that the cooling medium in the first cavity is conveyed to the second cavity communicated with the first cavity; the cooling medium conveyed to the second chamber is used for cooling the photosensitive element. The camera module has the characteristic of being capable of preventing laser from burning the photosensitive element.

Description

Technical Field

[0001] The present application relates to the technical field of camera module design, and in particular to a camera module and an electronic device. Background Art

[0002] With the popularity of electronic devices such as mobile phones, consumers are increasingly using the camera modules that come with electronic devices to record some scenes in daily life. For example, consumers will use their mobile phones to record live scenes while watching light shows or concerts. Light shows or concerts are often accompanied by some strong lasers. Since lasers have high brightness and high directionality, when the laser is irradiated on the camera module, the focusing effect of the lens will further focus the laser energy on the photosensitive chip, causing the photosensitive chip to be burned by the laser, thereby damaging the camera module. Summary of the invention

[0003] The embodiments of the present application provide a camera module and an electronic device, which at least solve the problem of how to improve the problem that the photosensitive chip is easily burned by laser.

[0004] In order to solve the above technical problems, this application is implemented as follows:

[0005] In a first aspect, an embodiment of the present application provides a camera module.

[0006] The camera module provided in the embodiment of the present application includes: a driving device and a photosensitive element, and the camera module is provided with a first chamber and a second chamber; the driving device can generate displacement when irradiated with laser, and the driving device is used to drive the volume of the first chamber to decrease so that the cooling medium in the first chamber is transported to the second chamber connected thereto; the cooling medium transported to the second chamber is used to cool the photosensitive element.

[0007] Optionally, the driving device is a photo-driven graphene device.

[0008] Optionally, the camera module also includes a first cavity and a first sliding body, the first sliding body is slidably connected to the first cavity, and the first cavity and the first sliding body form the first chamber; the driving device is drivably connected to the first sliding body to drive the first sliding body to slide relative to the first cavity so that the volume of the first chamber is reduced.

[0009] Optionally, the camera module further includes a first elastic element, wherein the first elastic element is respectively connected to the first sliding body and the first cavity, and the first elastic element is used to drive the first sliding body to reset.

[0010] Optionally, the camera module further includes a connecting member, and the driving device is connected to the first sliding body via the connecting member, and the first sliding body faces the driving device.

[0011] Optionally, the camera module further includes a second cavity, and the second cavity and a side of the photosensitive element facing away from the lens of the camera module form the second chamber.

[0012] Optionally, a accommodating hole is provided at a portion of the second cavity located between the first cavity and the second cavity, a second sliding body is provided in the accommodating hole, the second sliding body is provided with a connecting pipe, and a first connecting port of the connecting pipe is connected to the first cavity; when the volume of the first cavity is reduced, the cooling medium can drive the second sliding body to slide from a closed position to an open position, wherein, when the second sliding body is located in the closed position, the second connecting port of the connecting pipe is sealed with the hole wall of the accommodating hole, and when the second sliding body is located in the open position, the second connecting port of the connecting pipe is connected to the second cavity.

[0013] Optionally, the camera module further includes a second elastic element, wherein the second elastic element is respectively connected to the second sliding body and the second cavity, and the second elastic element is used for driving the second sliding body to reset.

[0014] In a second aspect, an embodiment of the present application provides an electronic device.

[0015] The electronic device provided in the embodiments of the present application includes any camera module provided in the embodiments of the present application.

[0016] Optionally, the electronic device further comprises a light-transmitting cover plate, the lens of the camera module is arranged between the light-transmitting cover plate and the photosensitive element, the driving device is arranged on the side of the lens, and the irradiation surface of the driving device faces the light-transmitting cover plate.

[0017] At least one of the above technical solutions adopted in the embodiments of the present application can achieve the following beneficial effects:

[0018] In an embodiment of the present application, when the laser light emitted by the laser source irradiates the driving device, the driving device is displaced. The driving device can drive the volume of the first chamber to decrease, so that the cooling medium in the first chamber can be "squeezed" to the second chamber connected thereto. The second chamber cooperates with the photosensitive element for heat transfer, so that the cooling medium delivered to the second chamber can be used to cool the photosensitive element. In this way, it is possible to avoid excessive accumulation of heat generated by the laser on the photosensitive element, so as to prevent the laser from burning the photosensitive element.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 A schematic diagram of a laser source and a camera module and a light-transmitting cover plate of an electronic device provided in an embodiment of the present application;

[0022] Figure 2 for Figure 1 A partial schematic diagram of the camera module shown in FIG.

[0023] Figure 3 A schematic diagram of a laser source and a camera module and a transparent cover plate of an electronic device provided in an embodiment of the present application, which shows a situation where a driving device is irradiated by laser;

[0024] Figure 4 for Figure 3 A partial schematic diagram of the camera module shown in FIG.

[0025] Description of reference numerals:

[0026] 1-electronic device; 10-camera module; 10a-first chamber; 10b-second chamber; 11-driving device; 111-connecting member; 12-photosensitive element; 131-first cavity; 132-first sliding body; 133-first elastic element; 134-second cavity; 135-accommodating hole; 136-second sliding body; 137-connecting pipe; 1371-first connecting port; 1372-second connecting port; 138-second elastic element; 14-lens; 15-substrate; 16-filter; 20-light-transmitting cover; 2-laser source. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0028] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0029] In addition, although the terms used in this application are selected from well-known and commonly used terms, some terms mentioned in the specification of this application may be selected by the applicant at his or her discretion, and their detailed meanings are explained in the relevant parts of the description of this article.

[0030] Furthermore, it is required that the present application be understood not only by the actual terms used but also by the meanings connoted by each term.

[0031] The technical solutions provided by various embodiments of the present application are described in detail below in conjunction with the accompanying drawings.

[0032] The present application embodiment provides a camera module. Figures 1 to 4 The camera module 10 provided in the embodiment of the present application includes: a driving device 11 and a photosensitive element 12. The camera module 10 is provided with a first chamber 10a and a second chamber 10b. The driving device 11 can generate displacement when irradiated by laser, and the driving device 11 is used to drive the volume of the first chamber 10a to decrease so that the cooling medium in the first chamber 10a is transported to the second chamber 10b connected thereto. The cooling medium transported to the second chamber 10b is used to cool the photosensitive element 12.

[0033] Exemplarily, the driving device 11 may be a photodynamic graphene device. The photodynamic graphene device is made of a photodynamic graphene material. When the photodynamic graphene is irradiated with light, it will eject electrons, wherein the electrons are ejected toward the light source, so that the photodynamic graphene moves in a direction away from the light source. It can be understood that the energy of the laser is relatively high, and when the photodynamic graphene is irradiated with the laser, the response speed of the photodynamic graphene is relatively fast.

[0034] Exemplarily, the driving device 11 may also be made of a photostrictive material. The photostrictive material can produce a telescopic deformation when exposed to light. It should be noted that with the advancement of technology, other materials that can produce displacement when exposed to laser may appear in the future. Therefore, the embodiment of the present application does not limit the material of the driving device 11, and it is only necessary that the driving device 11 can produce displacement when exposed to laser.

[0035] For example, the photosensitive element 12 may be a charge-coupled device (CCD) or a complementary metal oxide semiconductor (CMOS) element.

[0036] For example, the photosensitive element 12 may be disposed outside the second chamber 10b, or the photosensitive element 12 may cooperate with the outer wall of the second chamber 10b for heat transfer. Thus, when the cooling medium in the first chamber 10a is transported to the second chamber 10b, the cooling medium in the second chamber 10b may cool the photosensitive element 12 to prevent the photosensitive element 12 from being burned by the laser.

[0037] In this way, in the embodiment of the present application, when the laser light emitted by the laser source 2 irradiates the driving device 11, the driving device 11 is displaced. The driving device 11 can drive the volume of the first chamber 10a to decrease, so that the cooling medium in the first chamber 10a can be "squeezed" to the second chamber 10b connected thereto. The second chamber 10b cooperates with the photosensitive element 12 in heat transfer, so that the cooling medium transported to the second chamber 10b can be used to cool the photosensitive element 12. In this way, it is possible to avoid the heat generated by the laser from being excessively concentrated on the photosensitive element 12, so as to prevent the laser from burning the photosensitive element 12.

[0038] To facilitate those skilled in the art to better implement the solutions provided in the embodiments of the present application, more detailed examples are provided below for reference by those skilled in the art.

[0039] In some embodiments, the camera module 10 further includes a first cavity 131 and a first sliding body 132. The first sliding body 132 is slidably connected to the first cavity 131, and the first cavity 131 and the first sliding body 132 form a first cavity 10a. The driving device 11 is drivingly connected to the first sliding body 132 to drive the first sliding body 132 to slide relative to the first cavity 131, so that the volume of the first cavity 10a is reduced.

[0040] More generally, the first cavity 131 and the first sliding body 132 form a structure similar to a syringe. Thus, when the driving device 11 drives the first sliding body 132 to move toward the bottom of the first cavity 131, the volume of the first cavity 10a decreases. Thus, the cooling medium in the first cavity 10a can be "squeezed" into the second cavity 10b connected thereto.

[0041] It should be noted that, in order to improve the sealing performance between the outer periphery of the first sliding body 132 and the cavity wall of the first cavity 131, in some embodiments, a first sealing ring is provided on the outer periphery of the first sliding body 132, and the first sealing ring is sandwiched between the outer periphery of the first sliding body 132 and the cavity wall of the first cavity 131. Of course, in some embodiments, the area between the outer periphery of the first sliding body 132 and the cavity wall of the first cavity 131 can be sealed based on the principle of gap sealing.

[0042] In some embodiments, the camera module 10 further includes a first elastic element 133. The first elastic element 133 is respectively connected to the first sliding body 132 and the first cavity 131, and the first elastic element 133 is used to drive the first sliding body 132 to reset. Exemplarily, the first elastic element 133 is a first compression spring. The first compression spring is respectively connected to the first sliding body 132 and the cavity bottom of the first cavity 131. Thus, in the process in which the driving device 11 drives the first sliding body 132 to move toward the cavity bottom of the first cavity 131, the first compression spring stores elastic energy. After the driving device 11 stops working, the first sliding body 132 can be reset under the action of the elastic energy released by the first compression spring. In this way, the cooling medium can be assisted to flow back to the first chamber 10a.

[0043] In some embodiments, the camera module 10 further includes a connecting member 111. The driving device 11 is connected to the first sliding body 132 via the connecting member 111, and the first sliding body 132 faces the driving device 11. Exemplarily, the connecting member 111 may be a connecting rod, which may directly transmit the driving force of the driving device 11 to the first sliding body 132, thereby driving the first sliding body 132 to move toward the bottom of the first cavity 131, so that the volume of the first chamber 10a is reduced.

[0044] In some embodiments, the camera module 10 further includes a second cavity 134, and the second cavity 134 and a side of the photosensitive element 12 that is away from the lens 14 of the camera module 10 form a second cavity 10b. Exemplarily, the camera module 10 further includes a substrate 15. The photosensitive element 12 is disposed on the substrate 15. The second cavity 134, the photosensitive element 12 and the substrate 15 form the second cavity 10b. In this way, when the cooling medium enters the second cavity 10b, the cooling medium can absorb the heat of the photosensitive element 12.

[0045] In some embodiments, a portion of the second cavity 134 between the first cavity 10a and the second cavity 10b is provided with a receiving hole 135. A second sliding body 136 is provided in the receiving hole 135. The second sliding body 136 is provided with a connecting pipe 137, and a first connecting port 1371 of the connecting pipe 137 is connected to the first cavity 10a. When the volume of the first cavity 10a is reduced, the cooling medium can drive the second sliding body 136 to slide from the closed position to the open position.

[0046] When the second sliding body 136 is in the closed position, the second communication port 1372 of the communication pipe 137 is blocked and matched with the hole wall of the accommodating hole 135. When the second sliding body 136 is in the open position, the second communication port 1372 of the communication pipe 137 is connected with the second chamber 10b. In other words, the second sliding body 136 is in the closed position, which means that the second sliding body 136 is in a position to close the second communication port 1372. The second sliding body 136 is in the open position, which means that the second sliding body 136 is in a position to open the second communication port 1372. Therefore, when the second sliding body 136 is in the closed position, the second communication port 1372 is in a closed state to prevent the cooling medium from entering the second chamber 10b in the non-laser irradiation state. When the driving device 11 is irradiated by laser, the second sliding body 136 slides to the open position, the second communication port 1372 is in an open state, and the cooling medium in the first chamber 10a can be transported to the second chamber 10b through the communication pipe 137.

[0047] It should be noted that, in order to improve the sealing performance between the outer periphery of the second sliding body 136 and the hole wall of the receiving hole 135, in some embodiments, a second sealing ring is provided on the outer periphery of the second sliding body 136, and the second sealing ring is sandwiched between the outer periphery of the second sliding body 136 and the hole wall of the receiving hole 135. Of course, in some embodiments, the area between the outer periphery of the second sliding body 136 and the hole wall of the receiving hole 135 can be sealed based on the principle of gap sealing.

[0048] In some embodiments, the camera module 10 further includes a second elastic element 138. The second elastic element 138 is respectively connected to the second sliding body 136 and the second cavity 134, and the second elastic element 138 is used to drive the second sliding body 136 to reset. Exemplarily, the second elastic element 138 is a second compression spring. The second compression spring is respectively connected to the second sliding body 136 and the second cavity 134. Thus, in the process of the driving device 11 driving the second sliding body 136 to move toward the bottom of the second cavity 134, the pressure of the first cavity 10a increases, and the cooling medium in the first cavity 10a drives the second sliding body 136 to move in the direction away from the first cavity 10a, and the second compression spring stores elastic energy. After the driving device 11 stops working, the cooling medium flows back to the first cavity 10a, and when the pressure in the first cavity 10a and the pressure in the second cavity 10b tend to be balanced, the second sliding body 136 can be reset under the action of the elastic energy released by the second compression spring.

[0049] It should be noted that, in some embodiments, the cooling medium in the second chamber 10b does not need to flow back to the first chamber 10a. For example, after the camera module 10 is irradiated by laser and the cooling process of cooling the photosensitive element 12 is started, a corresponding prompt message can be displayed on the display device of the electronic device to prompt the consumer to take the electronic device to the after-sales service point in time to reset the photosensitive element protection function. The maintenance personnel at the after-sales service point will then discharge the cooling medium in the second chamber 10b to the first chamber 10a.

[0050] In other embodiments, taking the cooling medium as a coolant as an example, during the cooling process of starting the cooling process of cooling the photosensitive element 12, the first chamber 10a inputs 4 ml of coolant into the second chamber 10b. For example, the temperature of the coolant is 25 degrees Celsius. The coolant compresses the gas in the second chamber 10b. Thus, after the driving device 11 stops working, the coolant in the second chamber 10b is discharged back to the first chamber 10a by 3 ml of coolant under the action of the compressed gas in the second chamber 10b. For example, the temperature of the coolant discharged from the second chamber 10b is 60 degrees Celsius. After the coolant in the second chamber 10b is discharged into the first chamber 10a, it mixes with the coolant in the first chamber 10a, and the coolant in the first chamber 10a rises to 27 degrees Celsius.

[0051] Furthermore, when the driving device 11 is irradiated by the laser again, the first chamber 10a inputs about 3 ml of cooling liquid into the second chamber 10b again to cool the photosensitive element 12 to prevent the photosensitive element 12 from being burned by the laser. It can be seen that the photosensitive element 12 can be cooled multiple times by adopting the scheme that the second sliding body 136 can be telescopically slidable.

[0052] Alternatively, in some embodiments, at least part of the cavity wall of the second chamber 10b is provided with an elastic membrane. When 4 ml of cooling liquid is input into the second chamber 10b, the elastic membrane is in an expanded state. After the driving device 11 stops working, the elastic membrane contracts so that the cooling liquid is discharged into the first chamber 10a.

[0053] It should be noted that in the embodiments of the present application, the cooling medium can be a cooling gas or a cooling liquid. It is understandable that the cooling effect of a liquid is better than that of a gas, so it is recommended to use a cooling liquid as the cooling medium. In the case where the cooling medium is a cooling liquid, a cooling liquid that will not cause damage to the photosensitive element 12 can be selected. Alternatively, the photosensitive element 12 can be sealed to prevent the cooling liquid from directly contacting the photosensitive element 12 and causing damage to the photosensitive element 12. In addition, in some embodiments, after the drive device 11 stops working, most of the cooling liquid in the second chamber 10b can be discharged back to the first chamber 10a, so that only a small portion of the cooling liquid is attached to the cavity wall of the second chamber 10b to prevent the photosensitive element 12 from being immersed in the cooling liquid for a long time, which causes damage to the photosensitive element 12.

[0054] It should also be noted that the first cavity 131 and the second cavity 134 mentioned above can be an integrated structure or a split structure. Those skilled in the art can set the size, shape and structure of the first cavity 131 and the second cavity 134 according to actual needs, and the embodiment of the present application does not limit the size, shape and structure of the first cavity 131 and the second cavity 134.

[0055] In some embodiments, the camera module 10 further includes a filter 16. The filter 16 is disposed between the lens 14 and the photosensitive element 12. The filter 16 is used to filter stray light to improve the imaging effect of the camera module 10.

[0056] The present application embodiment provides an electronic device. Figures 1 to 4 The electronic device 1 provided in the embodiment of the present application includes any one of the camera modules 10 provided in the embodiment of the present application. For example, the electronic device 1 may be a mobile phone, a smart watch or a tablet computer.

[0057] In some embodiments, the electronic device 1 further includes a light-transmitting cover plate 20. The lens 14 of the camera module 10 is disposed between the light-transmitting cover plate 20 and the photosensitive element 12, and the driving device 11 is disposed on the side of the lens 14, with the irradiation surface of the driving device 11 facing the light-transmitting cover plate 20. Thus, when the camera module 10 is irradiated by the laser emitted by the laser source 2, the laser will also irradiate the irradiation surface of the driving device 11. It should be noted that, in an embodiment of the present application, the driving device 11 is a device that automatically generates displacement when irradiated by the laser. In this way, the driving device 11 has the advantage of being more sensitive to reaction, so that it can act before the laser energy damages the photosensitive element 12, thereby timely cooling the photosensitive element 12 to prevent the photosensitive element 12 from being burned by the laser.

[0058] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0059] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the embodiments of the present application, and the scope of the embodiments of the present application is defined by the appended claims and their equivalents.

Claims

1. A camera module (10), characterized in that: include: A driving device (11) and a photosensitive element (12), wherein the camera module (10) is provided with a first chamber (10a) and a second chamber (10b); The driving device (11) is capable of generating displacement when irradiated by laser, and is used to drive the volume of the first chamber (10a) to decrease, so that the cooling medium in the first chamber (10a) is transported to the second chamber (10b) connected thereto; the cooling medium transported to the second chamber (10b) is used to cool the photosensitive element (12).

2. The camera module (10) according to claim 1, characterized in that: The driving device (11) is a photo-driven graphene device.

3. The camera module (10) according to claim 1, characterized in that: The camera module (10) also includes a first cavity (131) and a first sliding body (132), wherein the first sliding body (132) is slidably connected to the first cavity (131), and the first cavity (131) and the first sliding body (132) form the first cavity (10a); the driving device (11) is drivably connected to the first sliding body (132) to drive the first sliding body (132) to slide relative to the first cavity (131) so as to reduce the volume of the first cavity (10a).

4. The camera module (10) according to claim 3, characterized in that: The camera module (10) further comprises a first elastic element (133), wherein the first elastic element (133) is respectively connected to the first sliding body (132) and the first cavity (131), and the first elastic element (133) is used to drive the first sliding body (132) to reset.

5. The camera module (10) according to claim 3, characterized in that: The camera module (10) further comprises a connecting member (111), the driving device (11) is connected to the first sliding body (132) via the connecting member (111), and the first sliding body (132) faces the driving device (11).

6. The camera module (10) according to claim 1, characterized in that: The camera module (10) further comprises a second cavity (134), wherein the second cavity (134) and a side of the photosensitive element (12) facing away from the lens (14) of the camera module (10) form the second chamber (10b).

7. The camera module (10) according to claim 6, characterized in that: The second cavity (134) is provided with a receiving hole (135) at a portion located between the first chamber (10a) and the second chamber (10b), a second sliding body (136) is provided in the receiving hole (135), the second sliding body (136) is provided with a communicating pipe (137), and a first communicating port (1371) of the communicating pipe (137) is communicated with the first chamber (10a); When the volume of the first chamber (10a) is reduced, the cooling medium can drive the second sliding body (136) to slide from a closed position to an open position, wherein, when the second sliding body (136) is located in the closed position, the second connecting port (1372) of the connecting pipe (137) is sealed with the hole wall of the accommodating hole (135), and when the second sliding body (136) is located in the open position, the second connecting port (1372) of the connecting pipe (137) is connected with the second chamber (10b).

8. The camera module (10) according to claim 7, characterized in that: The camera module (10) further includes a second elastic element (138), wherein the second elastic element (138) is respectively connected to the second sliding body (136) and the second cavity (134), and the second elastic element (138) is used to drive the second sliding body (136) to reset.

9. An electronic device, characterized in that: A camera module (10) comprising any one of claims 1 to 8.

10. The electronic device according to claim 9, characterized in that: The electronic device further comprises a light-transmitting cover plate (20), the lens (14) of the camera module (10) is arranged between the light-transmitting cover plate (20) and the photosensitive element (12), the drive device (11) is arranged on the side of the lens (14), and the irradiation surface of the drive device (11) faces the light-transmitting cover plate (20).

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