CN115103091B - Camera assembly and electronic equipment - Google Patents

Abstract

The application discloses a camera assembly and an electronic device. The camera component comprises a lens, a driving device, a light filtering component, a heating piece and an exhaust hole. The lens is arranged on the driving device, and the driving device is used for driving the lens to move. The driving device is connected with the light filtering component. The lens, the driving device and the light filtering component jointly enclose an inner space. The heating element is arranged in the inner space. The exhaust hole is communicated with the internal space and the outside and is used for exhausting the gas in the internal space. Through the mode, the dust and mist removal of the camera assembly can be realized, and the imaging quality of the camera assembly is improved.

Description

Camera assembly and electronic equipment

Technical Field

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

Background

With the continuous development and progress of technology, the functions of electronic devices are more and more diversified. Electronic devices such as smartphones or smartphones typically include a camera assembly that enables the electronic device to take pictures or record video. Existing camera assemblies typically employ lenses to focus light onto sensors that convert the light signals into electrical signals. However, dust or water mist can be generated in the camera assembly due to element collision or external dust and water vapor entering from gaps among the elements. Dust or water mist can have an influence on the optical performance of the camera assembly, and imaging quality of the camera assembly is reduced.

Disclosure of Invention

The embodiment of the application provides a camera component and electronic equipment, which can realize dust and mist removal of a camera and improve the imaging quality of the camera component.

In a first aspect, an embodiment of the present application provides a camera assembly. The camera component comprises a lens, a driving device, a light filtering component, a heating piece and an exhaust hole. The lens is arranged on the driving device and used for driving the lens to move. The driving device is connected with the light filtering component. The lens, the driving device and the light filtering component jointly enclose an inner space. The heating element is arranged in the inner space. The exhaust hole is communicated with the internal space and the outside and is used for exhausting the gas in the internal space.

In a second aspect, an embodiment of the present application provides an electronic device. The electronic equipment comprises a display screen, a shell and the camera component, wherein the display screen and the shell are enclosed to form a containing space, and the camera component is arranged in the containing space.

The beneficial effects of the application are as follows: different from the prior art, through set up the heating piece at the inner space of camera subassembly for the inner space can receive the heat that the heating piece produced, and the temperature rises. After the temperature of the inner space is increased, the water mist in the inner space or attached to the side wall of the inner space can be converted into water vapor to be fused with air, or attached dust can fall off to be fused with the air of the inner space. The exhaust hole is communicated with the inner space and the outside, so that the gas with water vapor and dust in the inner space can be exhausted to the outside from the exhaust hole, dust and mist are removed from the inside of the camera assembly, the influence of dust or water mist in the camera assembly on the optical performance is reduced, the imaging quality is improved, and the maintenance cost of the camera can be reduced.

Drawings

FIG. 1 is a schematic diagram of an embodiment of an electronic device of the present application;

FIG. 2 is a schematic diagram of an embodiment of a camera module according to the present application;

FIG. 3 is a schematic exploded view of the camera head assembly of FIG. 2;

FIG. 4 is a schematic cross-sectional view of the camera head assembly of FIG. 2;

FIG. 5 is a schematic view of a portion of the camera assembly of FIG. 4;

FIG. 6 is a schematic view of a vent in a partial structure of the camera head assembly of FIG. 4;

FIG. 7 is a schematic view of the filter assembly and the heating element of FIG. 2;

FIG. 8 is a schematic cross-sectional view of the camera head assembly of FIG. 2 at another angle;

fig. 9 is a schematic view of the structure of the air-closing device in fig. 8.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The inventor discovers that the imaging quality of the camera component of the electronic equipment is reduced in the using process after long-term study. For example, the camera assembly is imaged with black dots or clusters. The reason for the degradation of imaging quality is that during the manufacturing process of the camera assembly, the individual elements of the camera assembly may strike each other, generating dust or debris. And gaps are formed between the elements of the camera assembly, and dust or water mist can enter the inner space of the camera assembly from the gaps. Dust or water mist in the inner space of the camera assembly may be deposited and attached to a lens or other optical elements, and may block incident light rays of the camera assembly, resulting in degradation of imaging quality. In the related art, dust or water mist in the inner space of the camera assembly can be removed only by disassembling, cleaning, reassembling and testing. This approach can cause damage to the components and is extremely fragile, adding significant cost. In addition, in the using process of the electronic equipment, after dust or water mist enters into the inner space of the camera assembly, the maintenance difficulty and the maintenance cost are also higher. In order to improve the above technical problems, the present application proposes the following embodiments.

An embodiment of the electronic device 1 of the present application describes an exemplary structure of the electronic device 1. Referring to fig. 1, an electronic device 1 includes a display screen 30, a housing 20, and a camera assembly 10. The display screen 30 and the housing 20 enclose a receiving space, and the camera assembly 10 is disposed in the receiving space. It should be noted that the "electronic device 1" (or simply "device") as used herein includes, but is not limited to, a device configured to receive/transmit communication signals via a wireline connection, such as via a public-switched telephone network (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection, and/or another data connection/network, and/or via a wireless interface, such as for example, a cellular network, a Wireless Local Area Network (WLAN), a digital television network, such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and/or another communication terminal. A communication terminal configured to communicate through a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal", or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellites or cellular telephones; a Personal Communications System (PCS) terminal that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities; a PDA that can include a radiotelephone, pager, internet/intranet access, web browser, organizer, calendar, and/or a Global Positioning System (GPS) receiver; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. The mobile phone is the electronic device 1 provided with the cellular communication module. The mobile phone is illustrated here as an example, but the electronic apparatus 1 is not limited to the mobile phone. The electronic device 1 may also be a tablet computer, a notebook computer, a wearable device, or the like, for example.

The housing 20 and the display screen 30 cooperate to form a receiving space, and the camera assembly 10 is disposed in the receiving space. The housing 20 is provided with a through hole through which light passes, and the camera assembly 10 is disposed corresponding to the through hole to receive the light incident from the through hole. Alternatively, the camera assembly 10 is partially protruded from the accommodating space, so as to receive external light. The electronic device 1 may further include an electronic control board (not shown) disposed in the accommodating space and electrically/communicatively connected to the camera assembly 10 and the display screen 30, respectively. The display screen 30 is capable of displaying various information from the electronic control panel. In an embodiment of the present application, the display screen 30 may be an OLED (Organic Light-Emitting Diode) screen, a LCD (Liquid Crystal Display) screen, or an ink screen, which is not particularly limited herein. Alternatively, the display screen 30 may include a touch module, so that a user can interact with the electronic device 1 by touching the display screen 30, and the interacted information can be processed by the electronic control board.

Referring to fig. 1 to 3, in an embodiment of the present application, a camera module 10 includes a lens 12, a driving device 11 and a filter module 13. Specifically, the lens 12 may include a barrel (not shown) and a plurality of lenses (not shown) arranged along an axial direction of the barrel, with an optical axis of the lenses being parallel to an axis of the barrel. A spacer may also be provided between each two lenses to adjust the spacing between the lenses and/or to block out stray light. The lens 12 may also be designed and manufactured by referring to the related art, and will not be described again.

The lens 12 is mounted on the driving device 11 for driving the lens 12 to move. The driving device 11 may be a voice coil motor, a piezoelectric actuator, or the like, and is not particularly limited herein. The camera module 10 further includes a circuit board 17 and a sensor 18, the circuit board 17 is disposed on one side of the driving device 11, and the sensor 18 is disposed on the circuit board 17. External light can be transmitted to the sensor 18 through the lens 12, and the sensor 18 can convert the optical signal into an electrical signal, and then the electrical signal is processed to form an image that can be displayed by the electronic device 1. The driving device 11 can drive the lens 12 to generate displacement, and change the distance between the lens 12 and the sensor 18, thereby playing a role in focusing. The driving device 11 is connected with the filter assembly 13, and the filter assembly 13 is arranged between the circuit board 17 and the driving device 11. The external light can be transmitted to the filter assembly 13 through the lens 12, the filter assembly 13 can filter the light with a specific wavelength, and the light filtered by the filter assembly 13 is transmitted to the sensor 18 to be converted into an electric signal. Wherein, since human eyes can only receive light rays (i.e., visible light) within a specific wavelength range. The sensor 18 is able to receive the non-visible (e.g., infrared) portion of the light, which can cause the non-visible portion of the light to affect the imaging of the sensor 18. By providing the filter assembly 13, the portion of the light that can be received by the sensor 18 can be filtered to ensure imaging quality.

Further, the filter assembly 13 includes a stage 131 and a filter 132, and the filter 132 is disposed on the stage 131. The stage 131 is disposed between the circuit board 17 and the driving device 11, and is used for carrying the filter 132 and the driving device 11. The filter 132 is disposed corresponding to the lens 12 to receive the light incident from the lens 12 and filter the light. The filter 132 may be a reflective filter, an absorptive filter, or the like, and is not particularly limited herein. For example, the filter 132 may employ a blue glass infrared cut filter. The filter 132 is disposed corresponding to the sensor 18, so that the light filtered by the filter 132 can be transmitted to the sensor 18.

Further, referring to fig. 3 to 6, the lens 12, the driving device 11 and the filter assembly 13 together define an inner space 50 of the camera assembly 10. The camera head assembly 10 also includes a heating element 15 and an exhaust vent 16. The heating element 15 is disposed in the internal space 50, and the heating element 15 is electrically connected to the circuit board 17, and is capable of generating heat to heat the internal space 50. The heating member 15 may be in the form of a heating resistor, a heating pipe, or the like, and is not particularly limited. The exhaust hole 16 communicates the internal space 50 with the outside for exhausting the gas of the internal space 50. Specifically, the heating element 15 may be disposed on a side of the driving device 11 facing the inner space 50 or a side of the stage 131 of the filter assembly 13 facing the inner space 50, which is not particularly limited herein. The exhaust hole 16 may be provided in the driving device 11 or in the stage 131 of the filter assembly 13, and is not particularly limited herein. In an embodiment, referring to fig. 6 and 7, the heating element 15 is embedded in a side of the stage 131 exposed to the inner space 50, and the air exhaust hole 16 penetrates the driving device 11 to communicate the inner space 50 with the outside.

By providing the heating member 15 in the inner space 50 of the camera module 10, the inner space 50 can receive the heat generated by the heating member 15, and the temperature rises. After the temperature of the inner space 50 increases, the water mist in the inner space 50 or attached to the side wall thereof can be converted into water vapor to be fused with air, or attached dust can be dropped to be fused with the air of the inner space 50. The exhaust hole 16 communicates the inner space 50 with the outside, so that the gas with water vapor and dust in the inner space 50 can be exhausted to the outside from the exhaust hole 16, dust and mist are removed from the inside of the camera assembly 10, the influence of the dust or the water mist in the camera assembly 10 on the optical performance is reduced, the imaging quality is improved, and the maintenance cost of the camera assembly 10 can be reduced.

An exemplary description of the operation of the camera assembly 10 for dedusting and defogging is provided below:

during the manufacturing or use of the electronic device 1, the circuit board 17 or a chip in the electronic control board of the electronic device 1 can preview the imaging of the camera assembly 10, and can detect whether there is a light shielding object during the preview. Whether dust and mist removal is required or not can be determined by judging whether imaging has black spots or black clusters. For example, the light transmittance is detected, and when the light transmittance is lower than a certain threshold value, it is determined that dust or water mist is present in the internal space 50 of the camera module 10. Or if the size of the black dot and the black cluster is larger than a certain threshold, it is determined that dust or water mist exists in the inner space 50. After determining that the interior space 50 has dust or mist, the electronic control board can send a prompt message to the display screen 30, thereby confirming by the user whether to start dedusting and defogging. In other embodiments, the user may also actively trigger instructions to initiate dedusting and defogging.

After the instruction to start dedusting and demisting is triggered, the heating element 15 located in the inner space 50 is started, so that the water mist of the inner space 50 is gasified or the dust is shed, and the dust or the water mist is fused with the air of the inner space 50. The air in the inner space 50 can be discharged to the outside through the exhaust hole 16 for dust and mist removal.

Wherein the air of the inner space 50 is heated and expanded and then discharged from the exhaust hole 16. The air of the inner space 50 can also be sucked out by creating a negative pressure through the exhaust means 40. For example, in the manufacturing process, a dust and mist removing process may be provided, and after the heating element 15 is heated, the external exhaust device 40 may be used to suck out the air in the internal space 50 from the exhaust hole 16. As another example, in use, the electronic device 1 may further include an exhaust device 40, where the exhaust device 40 is disposed corresponding to the exhaust hole 16 of the camera module 10, and is configured to exhaust the gas in the internal space 50 of the camera module 10 through the exhaust hole 16. In the dust removal defogging process, the chip can preview the imaging simultaneously to confirm whether the black spot black cluster is eliminated or not, and whether the temperature or the air flow needs to be further adjusted or not.

Referring to fig. 4 to 6, the following exemplary description is made of the structure of the driving device 11:

the driving device 11 comprises a stator 111 and a rotor 112, the rotor 112 is movably arranged on the stator 111, and the lens 12 is arranged on the rotor 112. The driving device 11 is a voice coil motor, for example, as will be further described. Permanent magnets or coils are mounted in the stator 111, and permanent magnets or coils are also mounted in the mover 112. The mover 112 is movable relative to the stator 111 when subjected to force. For example, by inputting a current into the coil, the coil is subjected to ampere force. The mover 112 is capable of moving relative to the stator 111 under the action or reaction of the ampere force. The movement of the mover 112 can drive the lens 12 to move, so as to achieve the purpose of focusing. The mover 112 is spaced from the stator 111, and a gap 113 is provided between the mover 112 and the stator 111, and the gap 113 communicates the internal space 50 with the outside. Air can enter the inner space 50 through the gap 113 between the mover 112 and the stator 111. When the exhaust hole 16 is exhausted, air enters the inner space 50 through the gap 113, thereby maintaining the air pressure balance in the inner space 50.

The stator 111 of the driving device 11 is connected to the stage 131 of the filter assembly 13, and the filter assembly 13 is disposed on one side of the driving device 11. The heating member 15 may be disposed at the stage 131 of the filter assembly 13 or the stator 111 to heat the inner space 50. The exhaust hole 16 may be provided at the stage 131 of the filter assembly 13 or the stator 111.

In one embodiment, a gasket 19 is disposed between the stator 111 and the filter assembly 13, and the gasket 19 is disposed on a peripheral side of the filter assembly 13 to prevent gas from entering between the stator 111 and the filter assembly 13. Specifically, a gasket 19 facing the stator 111 is provided on the peripheral side of the stage 131 of the filter assembly 13, and both sides of the gasket 19 are respectively abutted against the stator 111 and the stage 131 to partially shield a gap therebetween. The gasket 19 is provided such that the stator 111 and the portion of the carrier 131 not in contact with the gasket 19 are provided at intervals. The spaced-apart gap communicates with the interior space 50 or is part of the interior space 50. In the present embodiment, the vent hole 16 is bent, and one end of the vent hole 16 near the inner space 50 faces the filter assembly 13. I.e., the end of the exhaust hole 16 near the inner space 50 faces the gap between the stage 131 and the stator 111. By this arrangement, the influence of the opening of the exhaust hole 16 on the installation of the lens 12 and the movement of the mover 112 can be reduced, so that the overall structure of the camera module 10 is optimized.

Further, referring to fig. 8 and 9, the camera module 10 further includes a gas-blocking device 14, wherein the gas-blocking device 14 is disposed in a gap 113 between the stator 111 and the mover 112 for selectively blocking gas from entering the interior space 50 through the gap 113. During the dust and mist removal, the gas in the inner space 50 is discharged from the gas discharge hole 16, and the outside air is introduced from the gap between the mover 112 and the stator 111. The air entering from the outside may contain dust or water mist, and in order to reduce secondary pollution of the internal space 50 by the air entering from the outside, it is necessary to provide the air-blocking device 14 at the gap 113 between the mover 112 and the stator 111. The selective prevention of gas ingress by the gas-blocking device 14 may include aspects, for example, the gas-blocking device 14 may open or close a portion or all of the gap 113 between the mover 112 and the stator 111 by moving or rotating to prevent a majority of the gas from entering the interior space 50 from the gap 113 to reduce ingress of dust or water mist. For another example, the air-lock 14 may be selectively permeable to allow clean air to pass through the air-lock 14, but not allow dust and water mist to pass through the air-lock 14 to block dust and water mist from the outside. For another example, the air-blocking device 14 can combine the two modes to reduce the entry of dust and water mist, so that the influence of the air-blocking device 14 on the relative movement of the rotor 112 and the stator 111 can be reduced, and the reliability of the use of the camera assembly 10 is improved.

In one embodiment, the air-blocking device 14 includes a driving member 141 and a shielding member 142, and the driving member 141 is mounted to the stator 111 or the mover 112. The driver 141 is connected to the shutter 142 to drive the shutter 142 to selectively block the gap 113. The driver 141 can drive the shutter 142 to move so that the shutter 142 shields the gap 113 between the stator 111 and the mover 112 or so that the shutter 142 cancels shielding of the gap 113. After the gap 113 is blocked by the blocking member 142, at least part or all of dust and mist passing through the gap 113 can be blocked from entering the internal space 50. After the shielding member 142 is removed from the gap 113, the movement of the mover 112 relative to the stator 111 is less affected by the shielding member 142 to ensure proper operation of the focusing function of the camera assembly 10. Optionally, the shield 142 is made of a waterproof, breathable material so that the shield 142 can prevent dust and water mist from entering and can allow clean air to enter to reduce contamination of the interior space 50 by air entering from the gap 113. Alternatively, the gap 113 between the mover 112 and the stator 111 is provided in a ring shape, and the air-blocking device 14 may be provided in plurality along the gap 113 to block the gap 113 as much as possible.

Referring to fig. 9, in an embodiment, the air-closing device 14 further includes a heat conducting member 143, the heat conducting member 143 is mounted on the stator 111, the driving member 141 is made of a memory alloy, and the memory alloy connects the shielding member 142 and the heat conducting member 143 to drive the shielding member 142 to move. The memory alloy has double-way memory, and can drive the shielding piece 142 to move when the temperature changes; when the temperature is restored, the shutter 142 can be driven to reset. The memory alloy arrangement advantageously utilizes the heating element 15 arranged in the inner space 50 as an energy source. By using the memory alloy, the space occupation of the gas-closing device 14 can be reduced, which is advantageous for miniaturization of the camera module 10 and increases the space utilization. By providing the heat conducting member 143, the heat generated by the heating member 15 can be conducted to the memory alloy with high efficiency, so that the deformation of the memory alloy can be facilitated, and the driving of the shielding member 142 can be facilitated.

In another embodiment, the shielding member 142 is movably mounted on the mover 112 or the stator 111, the driving member 141 is an electromagnetic driving member, the driving member 141 may be mounted on the mover 112 or the stator 111, and the driving member 141 may be disposed outside the driving device 11. An electromagnetic drive is magnetically coupled to the shutter 142 to drive movement of the shutter 142. The electromagnetic driving means does not require a direct connection of the shutter 142 to the driver 141, and the shutter 142 can be driven by a magnetic field. The electromagnetic driving mode can reduce the change or damage of the arrangement of the air-closing device 14 to the structure of the stator 111 or the rotor 112, improve the working stability of the driving device 11 and reduce the influence of the air-closing device 14 on the driving device 11.

Further, a side of the mover 112 facing the filter assembly 13 is provided with a collision preventing member 112a, and the stator 111 is provided with a notch 111a accommodating the collision preventing member 112 a. The anti-collision member 112a protrudes from the mover 112 toward the filter assembly 13. In the process that the mover 112 moves towards the filter assembly 13, the anti-collision member 112a can be abutted against the bottom of the notch 111a to limit the travel of the mover 112, so that the impact of the mover 112 or the lens 12 on the filter assembly 13 is reduced, and the filter assembly 13 and the lens 12 are protected. The gap 111a communicates the gap 113 with the internal space 50, and air in the gap 113 can enter the internal space 50 through the gap 111a. The notch 111a is provided such that the air intake amount of the air of the gap 113 is larger at the notch 111a and smaller at the other portions. The air-blocking device 14 may be provided corresponding to the notch 111a so as to block the gap 113 at the notch 111a where the amount of intake air is large, thereby preventing a large part of the air from entering into the internal space 50. A small portion of air can enter the interior space 50 from the unobstructed gap 113 to equalize the air pressure of the interior space 50.

The foregoing is only illustrative of the present application and is not to be construed as limiting the scope of the application, and all equivalent structures or equivalent flow modifications which may be made by the teachings of the present application and the accompanying drawings or which may be directly or indirectly employed in other related art are within the scope of the application.

Claims (11)

1. A camera assembly, comprising:

a lens;

the driving device is arranged on the lens and is used for driving the lens to move;

the driving device is connected with the light filtering component; the lens, the driving device and the light filtering component jointly enclose an inner space;

the heating piece is arranged in the inner space;

the exhaust hole is communicated with the internal space and the outside and is used for exhausting the gas in the internal space;

the driving device comprises a stator and a rotor, the rotor is movably mounted on the stator, the lens is mounted on the rotor, the stator is connected with the optical filtering assembly, the rotor and the stator are arranged at intervals, a gap is formed between the rotor and the stator, and the gap is communicated with the inner space and the outside; the camera assembly further includes a gas-blocking device disposed in the gap for selectively blocking gas from entering the interior space through the gap.

2. The camera head assembly of claim 1, wherein:

the heating piece is arranged on the light filtering assembly or the stator and is used for heating the inner space; the exhaust hole is arranged on the light filtering component or the stator.

3. The camera head assembly of claim 1, wherein:

the air-closing device comprises a driving piece and a shielding piece, wherein the driving piece is installed on the stator or the rotor, and is connected with the shielding piece and used for driving the shielding piece to selectively shield the gap.

4. A camera head assembly according to claim 3, wherein:

the air-closing device further comprises a heat conducting piece, the heat conducting piece is installed on the stator, the driving piece is made of memory alloy, and the driving piece is connected with the shielding piece and the heat conducting piece to drive the shielding piece to move.

5. A camera head assembly according to claim 3, wherein:

the shielding piece is movably arranged on the rotor or the stator, the driving piece is an electromagnetic driving piece, and the electromagnetic driving piece is magnetically connected with the shielding piece so as to drive the shielding piece to move.

6. The camera head assembly of claim 1, wherein:

the rotor is provided with the anticollision piece towards one side of filtering subassembly, the stator is provided with the accommodation the breach of anticollision piece, breach intercommunication the clearance with the inner space, the gas-tight device with the breach corresponds the setting.

7. The camera head assembly of claim 1, wherein:

a sealing gasket is arranged between the stator and the light filtering component, and the sealing gasket is arranged on the periphery side of the light filtering component so as to prevent gas from entering from between the stator and the light filtering component; the exhaust hole is bent, and one end of the exhaust hole, which is close to the inner space, faces the light filtering component.

8. The camera head assembly of claim 1, wherein:

the optical filtering component comprises a carrying platform and an optical filtering piece, the optical filtering piece is arranged on the carrying platform, the optical filtering piece and the lens are correspondingly arranged, and the heating piece is embedded on one side of the carrying platform exposed to the inner space.

9. The camera head assembly of claim 8, wherein:

the camera assembly further comprises a circuit board and a sensor, the sensor is arranged on the circuit board, the carrier is arranged between the circuit board and the driving device, and the optical filter is arranged corresponding to the sensor.

10. An electronic device, characterized in that:

the electronic equipment comprises a display screen, a shell and the camera component according to any one of claims 1-9, wherein a containing space is formed by surrounding the display screen and the shell, and the camera component is arranged in the containing space.

11. The electronic device of claim 10, wherein:

the electronic equipment further comprises an exhaust device, wherein the exhaust device is arranged corresponding to the exhaust hole of the camera assembly and is used for exhausting the gas in the internal space of the camera assembly through the exhaust hole.