阅读说明：本技术 一种摄像模组及电子设备 (Camera module and electronic equipment ) 是由 龙江 郑礼良 于 2020-05-25 设计创作，主要内容包括：本申请提供了一种摄像模组及电子设备。摄像模组包括摄像头模块、气体检测模块及控制模块。其中：摄像头模块包括镜筒,设于镜筒内的第一透镜组件、第二透镜组件及滤波组件。第一透镜组件固定于镜筒,第二透镜组件位于第一透镜组件与滤波组件之间,第二透镜组件可沿镜筒运动；第二透镜组件与滤波组件之间形成气腔。气体检测模块包括气体检测腔,气体检测腔内有气泵和气体传感器,气体检测腔设有排气口。气腔、气腔气阀、气体检测腔及进气气阀依次连接。控制模块用于控制气腔气阀和进气气阀开启和关闭,气泵的抽气和排气,气体传感器对气体检测腔内气体检测。采用该摄像头模组,可以实现摄像模组的镜头调焦及气体检测功能,且具有较高的检测精度。(The application provides a camera module and electronic equipment. The camera module comprises a camera module, a gas detection module and a control module. Wherein: the camera module comprises a lens barrel, a first lens assembly, a second lens assembly and a filtering assembly, wherein the first lens assembly, the second lens assembly and the filtering assembly are arranged in the lens barrel. The first lens component is fixed on the lens cone, the second lens component is positioned between the first lens component and the filter component, and the second lens component can move along the lens cone; an air cavity is formed between the second lens component and the filter component. The gas detection module comprises a gas detection cavity, a gas pump and a gas sensor are arranged in the gas detection cavity, and an exhaust port is formed in the gas detection cavity. The air cavity, the air cavity air valve, the air detection cavity and the air inlet air valve are connected in sequence. The control module is used for controlling the opening and closing of the air chamber air valve and the air inlet air valve, the air pump pumps air and exhausts the air, and the air sensor detects the air in the air detection chamber. By adopting the camera module, the functions of lens focusing and gas detection of the camera module can be realized, and the camera module has higher detection precision.)

1. The utility model provides a module of making a video recording which characterized in that includes: camera module, gaseous detection module and control module, wherein:

the camera module comprises a lens barrel, a first lens assembly, a second lens assembly and a filtering assembly, wherein the first lens assembly, the second lens assembly and the filtering assembly are arranged in the lens barrel, the first lens assembly is fixed on the lens barrel, the second lens assembly is arranged between the first lens assembly and the filtering assembly, and the second lens assembly can move in a direction close to or far away from the first lens assembly; an air cavity is formed between the second lens component and the filtering component;

the gas detection module comprises a gas detection cavity, a gas sensor and a gas pump, wherein the gas sensor and the gas pump are positioned in the gas detection cavity; the gas detection cavity is connected with a gas inlet valve; the gas detection cavity is connected with the gas cavity through a gas cavity gas valve, and the gas cavity gas valve is used for controlling the connection and disconnection between the gas detection cavity and the gas cavity;

the control module is used for controlling the opening and closing of the air chamber air valve, controlling the air pumping and exhausting of the air pump and controlling the air sensor to detect the air in the air detection chamber.

2. The camera module of claim 1, wherein the first lens assembly comprises a first lens and a first bracket, the first lens is fixed to the first bracket, and the first bracket is fixedly connected to the lens barrel.

3. The camera module according to claim 1 or 2, wherein the second lens assembly comprises a second lens, a second bracket and a slider, the second lens is fixed on the second bracket, and the second bracket is fixedly connected with the slider; the sliding block is assembled on the cylinder wall of the lens barrel and can move in the direction close to or far away from the first lens assembly.

4. The camera module of claim 3, wherein the slider has an annular structure, and a cavity cylinder is further disposed between the second lens assembly and the filter assembly, wherein one end of the cavity cylinder facing the first lens assembly extends into a space defined by the annular structure, an outer surface of the cavity cylinder is in sliding seal with an inner surface of the annular structure, and one end of the cavity cylinder away from the first lens assembly is fixedly connected with the filter assembly; the air cavity is formed among the inner surface of the lens barrel, the outer surface of the cavity barrel, the sliding block and the filtering component.

5. The camera module of claim 4, wherein the filter assembly comprises a base and a filter, the base is fixed to the lens barrel, and the filter is disposed on the base.

6. The camera module of claim 5, wherein an end of the chamber tube remote from the first lens assembly is fixedly connected to the base; the diameter of the cavity barrel is larger than or equal to the outer contour size of the second lens and the outer contour size of the filter.

7. The camera module according to any one of claims 1 to 6, wherein the air cavity is connected with the air cavity air valve through an air passage, the air cavity air valve is connected with the air detection cavity through an air passage, and the air detection cavity is connected with the air inlet air valve through an air passage.

8. The camera module according to any one of claims 1 to 7, further comprising an image sensor, wherein the image sensor is fixed to the lens barrel, and the image sensor is disposed on a side of the filter assembly away from the second lens assembly.

9. A camera module according to any one of claims 1 to 8, wherein a waterproof and dustproof film is provided at the air inlet of the air inlet valve.

10. The camera module according to any one of claims 1 to 9, wherein the control module comprises a microprocessor, and an air cavity air valve control unit, an air pump control unit, an air sensor control unit and an air inlet air valve control unit which are in signal connection with the microprocessor;

the air valve control unit of the air cavity is used for controlling the opening and closing of the air valve of the air cavity; the air pump control unit is used for controlling air suction and air exhaust of the air pump; the gas sensor control unit is used for controlling the opening and closing of the gas sensor and acquiring detection data of the gas sensor; the air inlet valve control unit is used for controlling the opening and closing of the air inlet valve.

11. An electronic apparatus comprising the camera module according to any one of claims 1 to 10.

Technical Field

The application relates to the technical field of electronic equipment, in particular to a camera module and electronic equipment.

Background

With the rapid development of electronic devices (such as mobile phones) and the increasing importance of the electronic devices in daily life, the functional requirements of people on the electronic devices are also higher and higher.

At present, a camera has become a ubiquitous component in existing electronic devices. Users also want to integrate more functions, such as air quality detection, on the basis of the camera being able to achieve auto-focus. In some current electronic devices, although the related functions have been integrated, the following problems still exist: electronic equipment, especially small products such as mobile phones, are limited by structural design, the air inlet opening of the device for air quality detection is usually small, and ventilation equipment such as a fan is not integrated, so that the efficiency and the accuracy of gas detection are low. In addition, a driving assembly is required in the focusing process of the camera for realizing the relative movement between the lenses; in the process of air quality detection, another driving assembly is needed for air suction and exhaust, which results in a complex structure of the camera and difficulty in making the size specification small.

Disclosure of Invention

In a first aspect, the present application provides a camera module, which may include three major modules, a camera module, a gas detection module, and a control module. Wherein: the camera module comprises a lens barrel, a first lens assembly, a second lens assembly and a filtering assembly, wherein the first lens assembly, the second lens assembly and the filtering assembly are arranged inside the lens barrel, the first lens assembly is fixed on the lens barrel, the second lens assembly is arranged between the first lens assembly and the filtering assembly, and the second lens assembly can move in a direction towards or away from the first lens assembly. An air cavity is formed between the second lens component and the filter component; the gas detection module comprises a gas detection cavity, a gas sensor positioned in the gas detection cavity and a gas pump. The gas detection cavity is provided with an exhaust port, and the gas pump can discharge the gas in the gas detection cavity and the gas cavity through the exhaust port; the gas detection cavity is connected with a gas inlet valve, a gas cavity valve is arranged between the gas detection cavity and the gas cavity, and the gas cavity valve is used for controlling the on-off between the gas detection cavity and the gas cavity. And the control module is used for controlling the opening and closing of the air chamber air valve and the air inlet air valve, controlling the air pumping and the air exhausting of the air pump and controlling the air sensor to detect the air in the air detection chamber.

Adopt the module of making a video recording of this application embodiment, can open through control module control air cavity pneumatic valve and inlet air valve, the air pump with the gaseous chamber that detects of ambient gas suction, ambient gas passes through the air cavity pneumatic valve and gets into the air cavity, can promote the second lens subassembly when the gas pressure of air cavity reaches the certain degree and move towards the direction that is close to first lens subassembly. In addition, the air in the air cavity can be discharged through the air pump, so that the second lens assembly moves towards the direction far away from the first lens assembly, and the lens focusing function of the camera module is realized. When the camera module is used for gas detection, the control module can control the air cavity air valve to be closed, the air inlet valve to be opened, and the control module controls the gas sensor to detect the gas in the gas detection cavity after the ambient air is pumped into the gas detection cavity through the air pump. The camera module of this application embodiment, can realize the camera lens focusing of camera module through pumping out and exhausting of air pump to and gaseous detection function, it is on the basis of the efficiency of effectual improvement camera lens focusing and gaseous detection, is favorable to improving gaseous detection's accuracy. In addition, adopt the module of making a video recording of this application embodiment, its camera lens focusing and gaseous detection process all realize through bleeding and the exhaust of same air pump, and it can make the structure of the module of making a video recording obtain simplifying to be favorable to realizing the miniaturized design of the module of making a video recording.

In a possible implementation manner, when the first lens assembly is specifically arranged, the first lens assembly may include a first lens and a first bracket, the first bracket is fixed to the lens barrel, and the first lens is fixed to the first bracket, so that the first bracket supports the first lens.

In one possible implementation manner, in order to realize the sliding of the second lens along the lens barrel, when the second lens is specifically arranged, the second lens assembly may include the second lens, a second bracket, and a slider. The sliding block can move along the cylinder wall of the lens cone, the second lens is arranged on the second support, and the second support is fixedly connected with the sliding block, so that the sliding block drives the second lens assembly to move in the direction towards or away from the first lens assembly in the process of moving along the cylinder wall of the lens cone.

In addition, the sliding block is provided with an annular structure, a cavity cylinder is further arranged between the second lens assembly and the filtering assembly, one end, close to the second lens assembly, of the cavity cylinder extends into a space enclosed by the annular structure, the outer surface of the cavity cylinder is in sliding seal with the inner surface of the annular structure, and one end, far away from the first lens assembly, of the cavity cylinder is fixed on the filtering assembly. Thus, air cavities can be formed among the inner surface of the lens barrel, the outer surface of the cavity barrel, the sliding block and the filter assembly.

The filter assembly may generally include a base fixed to the lens barrel and a filter disposed on the base. At the moment, one end of the cavity barrel, far away from the first lens assembly, is fixed on the base, and the diameter of the cavity barrel is larger than or equal to the outer contour size of the second lens and the outer contour size of the filter, so that the pollution of gas entering the air cavity to optical devices such as the second lens and the filter can be avoided, and the service life of the camera module can be prolonged.

In addition to the above-described structure, the camera module according to the embodiment of the present application may further include an image sensor that is operable to receive light entering the camera module through the first lens and the second lens, and to shape a captured image by converting the light into an electrical signal.

In a possible implementation mode, the air inlet of the air inlet valve is provided with a waterproof dustproof film, so that moisture or dust in ambient air is filtered, the ambient air enters the air detection cavity through the air inlet valve, and the damage to devices in the air detection cavity is avoided.

When the control module is specifically arranged, the control module may include a microprocessor, and an air cavity air valve control unit, an air pump control unit, an air sensor control unit and an air inlet air valve control unit which are in signal connection with the microprocessor. The air chamber air valve control unit is used for controlling the opening and closing of the air chamber air valve; the air pump control unit is used for controlling air suction and air exhaust of the air pump; the gas sensor control unit is used for controlling the opening and closing of the gas sensor and acquiring detection data of the gas sensor; the air inlet valve control unit is used for controlling the opening and closing of the air inlet valve.

In a possible implementation manner, when the camera module of the embodiment of the application is used for gas detection, the detection process can be as follows: closing the air chamber air valve; opening the air pump, discharging residual air in the air detection cavity through the air pump from the air outlet, wherein the air outlet is in an open state; the air inlet valve is opened, and the air pump pumps ambient air from the air inlet to the air detection cavity, so that the air outlet is closed, the air inlet is opened, and ambient air flows through an air passage between the air inlet valve and the air detection cavity; closing the air inlet valve and stopping the air pump from pumping air; at this time, the exhaust port is in a closed state, the air inlet is in a closed state, and each air passage has no air circulation. The gas sensor detects the ambient air in the gas detection cavity and transmits detection data to the gas sensor control unit, and the gas sensor control unit reports the gas detection data to the microprocessor. And finally, discharging the gas in the gas detection cavity from the gas outlet through the gas pump, and opening the gas outlet at the moment.

Adopt the module of making a video recording of this application embodiment before detecting ambient air, will gaseous residual gas who detects the intracavity earlier through the air pump and discharge, later with the gaseous chamber that detects of air inlet suction of ambient air through the pneumatic valve that admits air to the realization is favorable to improving this gaseous detection module's gaseous detection efficiency and precision to ambient air's detection like this. In addition, because the air chamber air valve is always in a closed state in the gas detection process, the detection process can not influence the camera module.

In a possible implementation manner, when the camera module according to the embodiment of the present application performs focusing of the camera module, a focusing process of the camera module may be: opening an air inlet valve and an air cavity valve; opening the air pump, pumping ambient air by the air pump, and enabling the ambient air to enter the air cavity after sequentially passing through the air inlet valve, the air detection cavity and the air cavity valve; at the moment, the air inlet of the air inlet valve is in an open state, the air outlet of the air detection cavity is in a closed state, and air flows in each air passage. When the air pressure in the air cavity is increased to a certain degree, the sliding block is pushed to drive the second lens component to move towards the direction close to the first lens component; and when the second lens assembly moves to meet the focusing requirement of the camera module, the air chamber air valve is closed, the second lens assembly stops moving, and the air inlet air valve and the air pump are closed to finish focusing of the camera module.

In addition, when the process of moving the second lens assembly of the camera module away from the first lens assembly is required, the focusing process may be: closing the air inlet valve and opening the air cavity valve; opening the air pump, pumping out the air in the air cavity by the air pump, allowing the air to enter the air detection module through the air valve of the air cavity and to be discharged through the air outlet; at the moment, the air inlet of the air inlet valve is in a closed state, the air outlet of the air detection cavity is in an open state, and air flows between the air cavity and the air cavity air valve and in the air passage between the air cavity air valve and the air detection cavity. When the air pressure in the air cavity is reduced to a certain degree, the sliding block drives the second lens component to move towards the direction far away from the first lens component; when the second lens assembly moves to meet the focusing requirement of the camera module, the air chamber air valve and the air pump are closed to finish focusing of the camera module.

In the focusing process of the camera module, the second lens assembly moves towards the direction close to the first lens assembly in a mode of pumping ambient air by the air pump and pressing the ambient air into the air cavity; and the second lens assembly moves towards the direction far away from the first lens assembly in a mode that the air pump pumps out the air in the air cavity, so that the focusing of the camera module is realized. Compared with the embodiment of focusing by a voice coil motor, the camera module is more beneficial to realizing the miniaturization design.

In a second aspect, an embodiment of the present application further provides an electronic device, which may be but is not limited to a mobile phone, a tablet computer, a wearable device, a palmtop computer, and the like, and includes the camera assembly of the first aspect.

The electronic equipment provided by the embodiment of the application can realize focusing of the camera module and a detection function of ambient gas at the same time. In addition, the focusing of the camera module and the detection process of the environmental gas are realized through the air pumping and exhausting processes of the same air pump, the miniaturization design of the camera module is facilitated, and the efficiency and the precision of gas detection can be effectively improved.

Drawings

Fig. 1 is a schematic structural diagram of a camera module according to an embodiment of the present application;

fig. 2 is a gas detection flow chart of the camera module according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a gas detection module of the camera module according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a gas detection module of a camera module according to another embodiment of the present application;

fig. 5 is a schematic structural diagram of a gas detection module of a camera module according to another embodiment of the present application;

fig. 6 is a focusing flow chart of a camera module of the camera module according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a camera module according to another embodiment of the present application;

fig. 8 is a focusing flow chart of a camera module according to another embodiment of the present application;

fig. 9 is a schematic structural diagram of a camera module according to another embodiment of the present application.

Reference numerals:

1-a camera module; 101-a lens barrel; 102-a first lens assembly; 1021-a first lens; 1022-a first scaffold;

103-a second lens assembly; 1031-second lens; 1032-a second rack; 1033-a slider; 104-a filtering component;

1041-a base; 1042-a filter; 105-a first cavity; 106-chamber cylinder; 107-a second cavity; 108-an air cavity;

109-an image sensor; 2-a gas detection module; 201-air cavity air valve; 202-a gas detection chamber; 2021-vent;

203-an air inlet valve; 2031-air intake; 204-the airway; 205-an air pump; 206-a gas sensor; 207-waterproof and dustproof film;

3-a control module; 301-a microprocessor; 302-air cavity air valve control unit; 303 an air pump control unit;

304-a gas sensor control unit; 305-intake valve control unit.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more clear, the present application will be further described in detail with reference to the accompanying drawings.

The terminology used in the following examples is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification of the present application and the appended claims, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, such as "one or more", unless the context clearly indicates otherwise.

Reference throughout this specification to "one embodiment" or "some embodiments," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise.

For the convenience of understanding the camera module provided in the embodiment of the present application, an application scenario of the camera module is first described below. The camera module can be arranged in electronic equipment such as a mobile phone, a tablet personal computer, wearable equipment, a Personal Digital Assistant (PDA) and the like so as to realize the camera function of the electronic equipment. At present, in order to comply with the rapidly developing requirements of electronic devices, more functions, such as an air detection function, need to be integrated in the electronic devices. However, due to the structural design of the electronic device, the air intake holes of the device for air detection are usually set to be small, and due to the fact that no ventilation device such as a fan is integrated, the efficiency and the accuracy of the air detection are low. The camera module of the embodiment of the application aims at solving the problems. In order to fully recognize the camera module of the present application, the following describes the structure of the camera module in detail with reference to the accompanying drawings.

Referring to fig. 1, a camera module according to an embodiment of the present disclosure mainly includes three major components, which are a camera module 1, a gas detection module 2, and a control module 3. The camera module 1 includes a lens barrel 101, a first lens assembly 102, a second lens assembly 103, and a filter assembly 104. The first lens assembly 102 is disposed inside the lens barrel 101 and is fixedly connected to a barrel wall of the lens barrel 101. When the first lens assembly 102 is specifically configured, the first lens assembly 102 may include a first lens 1021 and a first support 1022, and the first support 1022 is configured to support the first lens 1021. Therefore, the position of the first lens 1021 can be fixed by connecting the first support 1022 with the barrel wall of the barrel 101, and in addition, the first lens 1021 can be effectively prevented from being damaged in the process of fixing the first lens 1021 to the barrel 101.

The second lens assembly 103 is disposed between the first lens assembly 102 and the filter assembly 104, and the second lens assembly 103 is movable in a direction approaching or moving away from the first lens assembly 102. The second lens assembly 103 and the first lens assembly 102 have a first cavity 105 (a cavity with a height H1 in fig. 1) therebetween, the first cavity 105 may be formed by the lens barrel 101, the first lens assembly 102 and the second lens assembly 103, and during the movement of the second lens assembly 103 in a direction approaching or moving away from the first lens assembly 102, the air pressure in the first cavity 105 may be increased or decreased accordingly. With continued reference to fig. 1, the second lens assembly 103 can include a second lens 1031, a second holder 1032, and a slider 1033. The second holder 1032 plays a role in stably supporting the second lens 1031, and in addition, the second holder 1032 is fixedly connected to the slider 1033, so that the slider 1033 slides along the wall of the lens barrel 101 to drive the second lens 1031 to move in a direction close to or away from the first lens assembly 102, thereby achieving focusing of the camera module 1. It is understood that, in the embodiment of the present application, the numbers of the first lens assembly 102 and the second lens assembly 103 may be one, two, or more than two, which may be set according to the lens focusing requirements of the camera module 1. For the sake of understanding the camera module 1 of the present application, the structure of the camera module 1 will be described in each embodiment of the present application by taking the first lens assembly 102 and the second lens assembly 103 as an example.

In the specific arrangement of the slider 1033, reference may be made to fig. 1, which may, but is not limited to, comprise an annular cylindrical structure to achieve a stable support of the second lens 1031. In addition, the slider 1033 can be attached to the inner wall of the lens barrel 101, and the manner of attaching the slider 1033 to the lens barrel 101 may be, for example, that the outer diameter of the slider 1033 is equal to the inner diameter of the lens barrel 101, so that the stability of the slider 1033 moving along the lens barrel 101 can be effectively improved, and the slider 1033 can be clamped to the lens barrel 101 after the focusing of the camera module 1 is completed.

In some embodiments of the present application, referring to fig. 1, a cavity cylinder 106 is further disposed between the second lens assembly 103 and the filter assembly 104, one end of the cavity cylinder 106 is slidably connected to the slide block 1033, and the other end is fixed to the filter assembly 104. The filter assembly 104 includes a base 1041 and a filter 1042, the base 1041 is fixed to the lens barrel 101 to support the filter 1042, and the filter 1042 can filter infrared light that cannot be recognized by human eyes, and is divided into a reflective type (white glass filter) and an absorptive type (blue glass filter). To avoid the filter 1042 from being affected by the disposition of the chamber barrel 106, the chamber barrel 106 can be fixed to the base 1041. A second cavity 107 is formed among the second lens assembly 103, the chamber barrel 106, the slider 1033, and the filter assembly 104, and the inner diameter of the chamber barrel 106 is greater than or equal to the outer dimensions of the second lens 1031 and the filter 1042 of the filter assembly 104, so that the second lens 1031 and the filter 1042 of the filter assembly 104 are accommodated in the second cavity 107. In addition, when the sliding block 1033 is an annular columnar structure, the cavity cylinder 106 can be inserted into a space surrounded by the sliding block 1033, and the outer surface of the cavity cylinder 106 is attached to the inner surface of the sliding block 1033, so that the outer surface of the cavity cylinder 106 is in sliding seal with the inner surface of the sliding block 1033. Therefore, the second cavity 107 is a sealed cavity, so as to prevent the gas from entering the second cavity 107 and causing contamination to the optical devices such as the second lens 1031 and the filter 1042.

In order to be able to drive the slider 1033 to slide along the lens barrel 101, with continued reference to fig. 1, an air cavity 108 (cavity at a height H2 in fig. 1) may be formed between the inner surface of the lens barrel 101 and the outer surface of the cavity barrel 106, the slider 1033, and the base 1041. Thus, the slider 1033 can be pushed to move the second lens 1031 up and down by inflating or deflating the air chamber 108.

Referring to fig. 1, in addition to the above structure, the camera module may further include an image sensor 109, where the image sensor 109 is fixed to the lens barrel 101 and disposed on a side of the filter assembly 104 away from the second lens assembly 103. The image sensor 109 may be divided into, but not limited to, a Charge Coupled Device (CCD) and a Complementary Metal Oxide Semiconductor (CMOS). The image sensor 109 is a photosensitive element that can receive light entering the camera module 1 through the first lens 1021 and the second lens 1031, and can convert energy of the light into electric charges, thereby implementing a camera function of the camera module.

Referring to fig. 1, in the embodiment of the present application, a gas detection module 2 is provided to realize a gas detection function of a camera module. When specifically setting up the gaseous detection module 2 of the module of making a video recording, gaseous detection module 2 includes gaseous detection chamber 202. When the gas detection chamber 202 is specifically provided, a gas pump 205 and a gas sensor 206 are provided in the gas detection chamber 202. The air pump 205 may be, but not limited to, a micro pump with a valve based on piezoelectric effect, so as to control the flow rate of air in the air pump 205 by applying a voltage through a driving circuit, thereby implementing the functions of pressurization and air exhaust. In addition, the air pump 205 can be selected to be a valved micropump with a small volume, so as to facilitate the miniaturization design of the camera module. The gas sensor 206 is a sensor that can be used to detect a gas component, and may be an electrochemical gas sensor, a metal oxide semiconductor gas sensor, or the like.

The gas detection chamber is further connected to a gas inlet valve 203, and the gas inlet valve 203 is a switchable valve and is provided with a gas inlet 2031, and ambient air is introduced into the gas detection chamber 202 by controlling the on/off of the gas inlet 2031. The gas detection chamber 202 is provided with a gas discharge port 2021, and the gas in the gas detection chamber 202 and the gas chamber 108 can be discharged through the gas discharge port 2021. In addition, the gas detection cavity 202 is connected with the gas cavity 108 through a gas cavity gas valve 201, and the gas cavity gas valve 201 is used for controlling the connection and disconnection between the gas detection cavity 202 and the gas cavity 108.

Referring to fig. 1, by the arrangement of the gas detection module 2, ambient air may sequentially pass through the air inlet 2031, the air inlet valve 203, the gas detection cavity 202 and the air cavity valve 201 and then enter the air cavity 108, and then the slider 1033 is pushed to drive the second lens assembly 103 to move toward the direction close to the first lens assembly 102; in addition, when the slider 1033 drives the second lens assembly 103 to move away from the first lens assembly 102, the gas in the gas cavity 108 can enter the gas detection cavity 202 through the gas cavity valve 201 and be exhausted through the exhaust port 2021 of the gas detection cavity 202.

In some possible embodiments of the present application, the air chamber 108 may be connected to the air chamber valve 201 through an air passage 204, the air chamber valve 201 is connected to the air detection chamber 202 through an air passage 204, and the air detection chamber 202 is connected to the air inlet valve 203 through an air passage 204. Therefore, the specific parameters such as the length of the air channel 204 can be adjusted, so that the arrangement positions of the air cavity air valve 201, the air detection module 2 and the air inlet air valve 203 are more flexible.

In addition to the above structure, referring to fig. 1, in some embodiments of the present disclosure, a waterproof and dustproof film 207 may be disposed at the air inlet 2031 of the air inlet valve 203 to filter out moisture and dust that may exist in the ambient air entering the gas detection module 2 through the air inlet 2031, so as to avoid polluting devices in the camera module.

With continued reference to fig. 1, when the control module 3 is specifically provided, the control module 3 may include a microprocessor 301, an air chamber gas valve control unit 302, an air pump control unit 303, a gas sensor control unit 304, and an intake gas valve control unit 305. The microprocessor 301 (MCU) can perform operations such as controlling, reading, or executing instructions.

The air cavity air valve control unit 302 can be connected with the air cavity air valve 201 to control and realize the opening and closing of the air cavity air valve 201; the air pump control unit 303 may be connected to the air pump 205 for implementing the functions of opening and closing, pressurizing and exhausting the air pump 205; the gas sensor control unit 304 is connected with the gas sensor 206, so as to switch the gas sensor 206 and acquire the detection data; the intake valve control unit 305 is connected to the intake valve 203 to realize opening and closing of the intake valve 203. The air cavity air valve control unit 302, the air pump control unit 303, the air sensor control unit 304 and the air intake valve control unit 305 are connected with the microprocessor 301, so that the microprocessor 301 controls the control units to control the air cavity air valve 201, the air intake air valve 203, the air pump 205 and the air sensor 206, and acquire and process detection data, thereby realizing the air detection and lens focusing functions of the camera module.

In some embodiments of the present application, when the camera module is used, referring to fig. 2, fig. 2 is a flowchart illustrating a gas detection process of the camera module according to an embodiment. In the gas detection module 2 in fig. 1, the state of the gas passage 204, the gas inlet 2031, and the gas outlet 2021 is indicated by whether or not the oval shape has a grid fill. For example, the oval shape with grid filling in the present embodiment means that there is no gas flowing in the gas passage 204, or the gas inlet 2031 and the gas outlet 2021 are in a closed state; the oval shape without grid filling indicates that there is gas flowing in the gas passage 204, or the gas inlet 2031 and the gas outlet 2021 are in an open state. In the embodiment shown in fig. 1, no gas flows through each gas passage 204, and the gas inlet 2031 and the gas outlet 2021 are in a closed state. Taking the state of the camera module shown in fig. 1 as the initial state of gas detection, the gas detection process may include:

step S1: closing the air chamber valve 201;

step S2: the air pump 205 is opened, and the residual air in the air detection chamber 202 is discharged from the air outlet 2021 through the air pump 205, wherein the air outlet 2021 is in an open state;

step S3: opening the air intake valve 203;

step S4: ambient air is pumped from the air inlet 2031 to the air detection chamber 202 by the air pump 205, and it can be understood that, at this time, the air detection module 2 is in the state shown in fig. 3, the air outlet 2021 is in the closed state, the air inlet 2031 is in the open state, and the air passage 204 between the air inlet valve 203 and the air detection chamber 202 is in ambient air communication;

step S5: closing the air intake valve 203;

step S6: the air pump 205 stops pumping air;

at this time, the gas detection module 2 is in the state shown in fig. 4, the exhaust port 2021 is in the closed state, the intake port 2031 is in the closed state, and no gas flows through each gas passage 204.

Step S7: the gas sensor 206 detects the ambient air in the gas detection cavity 202 and transmits the detection data to the gas sensor control unit 304, and the gas sensor control unit 304 reports the gas detection data to the microprocessor 301;

step S8: the air pump 205 discharges the air in the air detection chamber 202 through the air outlet 2021, and at this time, the air outlet 2021 is opened, and the air detection module 2 is in the state shown in fig. 5.

It is understood that the above-mentioned gas detecting process is only an exemplary illustration given herein, and in other embodiments of the present application, the sequence of steps S2 and S3 may be reversed, i.e., the gas inlet valve 203 is opened first, and then the gas pump 205 is opened to discharge the residual gas in the gas detecting chamber 202 through the gas outlet 2021. This allows ambient air drawn into the gas detection chamber 202 by the air pump 205 to expel residual gas originally in the gas detection chamber 202 through the exhaust port 2021, thereby improving gas detection accuracy.

In the above detection process, before the ambient air is detected, the residual air in the air detection cavity 202 is discharged through the air pump 205, and then the ambient air is pumped into the air detection cavity 202 through the air inlet 2031 of the air inlet valve 203 to realize the detection of the ambient air, which is beneficial to improving the accuracy of the air detection module 2. In addition, in the process of gas detection, the gas chamber gas valve 201 is always in a closed state, so that the detection process does not influence the camera module.

When the camera module according to the embodiment of the present application performs focusing of the lens of the camera module 1, since the focusing process of the camera module 1 includes a process in which the second lens assembly 103 moves toward the direction close to the first lens assembly 102 and a process in which the second lens assembly 103 moves away from the first lens assembly 102, the focusing of the camera module 1 is described in the present application with respect to the above two moving processes, respectively. First, referring to fig. 6, fig. 6 is a flow chart illustrating focusing during the movement of the second lens assembly 103 of the camera module 1 toward the direction close to the first lens assembly 102 according to an embodiment. Referring collectively to fig. 7, the focusing process may include:

s01: opening the air inlet valve 203 and the air cavity valve 201;

s02: the air pump 205 is opened, the air pump 205 pumps ambient air, and the ambient air enters the air cavity 108 after passing through the air inlet valve 203, the air detection cavity 202 and the air cavity valve 201 in sequence;

at this time, referring to fig. 7, the intake ports 2031 of the intake gas valves 203 are opened, the exhaust ports 2021 of the gas detection chambers 202 are closed, gas flows through each gas passage 204, and solid arrows in fig. 7 indicate the flow direction of the gas.

S03: when the air pressure of the air cavity 108 is increased to a certain degree, the slide block 1033 is pushed to drive the second lens assembly 103 to move towards the direction close to the first lens assembly 102;

s04: when the second lens assembly 103 moves to meet the focusing requirement of the camera module, the air chamber air valve 201 is closed, and the second lens assembly 103 stops moving;

s05: closing the air intake valve 203;

s06: the air pump 205 is turned off, and focusing of the camera module 1 is completed.

In addition, referring to fig. 8 and fig. 9 together, the process of moving the second lens assembly 103 of the camera module 1 away from the first lens assembly 102 may include:

s001: closing the air intake valve 203;

s002: opening the air chamber valve 201;

s003: the air pump 205 is opened, the air pump 205 pumps out the air in the air cavity 108, and the air enters the air detection module 2 through the air cavity air valve 201 and is discharged through the air outlet 2021;

at this time, referring to fig. 9, the gas inlet 2031 of the gas inlet valve 203 is in a closed state, the gas outlet 2021 of the gas detection chamber 202 is in an open state, and gas flows in the gas passage 204 between the gas chamber 108 and the gas chamber valve 201 and between the gas chamber valve 201 and the gas detection chamber 202, and the solid arrows in fig. 9 indicate the flow direction of the gas.

S004: when the air pressure in the air cavity 108 is reduced to a certain degree, the slider 1033 drives the second lens assembly 103 to move in a direction away from the first lens assembly 102 under the action of the air pressure in the first cavity 105;

s005: closing the air chamber valve 201;

s006: the air pump 205 is turned off, and focusing of the camera module 1 is completed.

It is to be understood that the above-mentioned focusing sequence of the camera module is only an exemplary description given herein, and in other embodiments of the present application, other possible steps may be adopted to implement focusing of the camera module.

In the focusing process of the camera module, the air pump 205 is used for pumping ambient air and pressing the ambient air into the air cavity 108 to realize that the second lens assembly 103 moves towards the direction close to the first lens assembly 102; and the air pump 205 is used for pumping the air in the air cavity 108 out to realize the movement of the second lens assembly 103 towards the direction far away from the first lens assembly 102, thereby realizing the focusing of the camera module. Which is more advantageous to achieve a miniaturized design of the camera module 1 than an embodiment in which focusing is performed by a voice coil motor. In addition, by arranging the waterproof and dustproof film 207 at the air inlet 2031 of the air inlet valve 203, the second lens assembly 103, the filter assembly 104 and other optical devices of the camera module 1 can be prevented from being polluted by ambient air, which is beneficial to prolonging the service life of the camera module.

In addition, by adopting the camera module group of the embodiment of the application, the focusing of the camera module 1 can be realized, and the focusing and the gas detection process can be independently carried out, which is beneficial to improving the focusing accuracy of the camera module 1 and the gas detection efficiency and accuracy.

In other possible embodiments of the present application, in an intelligent terminal such as a mobile phone, the pumping and exhausting function of the air pump 205 can be utilized, and the flexible sensing technology is combined to simulate an entity volume key, and the touch and feedback functions are realized through reasonable design.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.