Camera module and electronic equipment

Abstract

The utility model relates to a camera module and electronic equipment. The camera module comprises a lens; the lens is mounted on the driving mechanism, and the driving mechanism is used for driving the lens to move; the driving circuit is electrically connected with the driving mechanism, and the driving circuit is used for driving the driving mechanism to move; and the power supply circuit is electrically connected with the driving circuit, and the power supply circuit can supply power to the driving circuit with different power supply voltages. The power supply circuit can supply power to the driving circuit with different power supply voltages, so that power supply with higher power supply voltages under various moving distances of the lens is avoided, and the power consumption of the camera module is reduced.

Description

Technical Field

[0001] This disclosure relates to the field of photography technology, and more particularly to a camera module and electronic device. Background Technology

[0002] Currently, the drive mechanism of the camera module in electronic devices can move the lens to achieve optical image stabilization and autofocus, thereby improving the image capture quality. However, the camera module suffers from high power consumption during the image capture process. Utility Model Content

[0003] To overcome the problems existing in related technologies, this disclosure provides a camera module and electronic device.

[0004] According to a first aspect of this disclosure, a camera module is provided, the camera module comprising:

[0005] Lens;

[0006] A drive mechanism, wherein the lens is mounted on the drive mechanism, and the drive mechanism is used to drive the lens to move;

[0007] A drive circuit, which is electrically connected to the drive mechanism, is used to drive the drive mechanism to move;

[0008] A power supply circuit is electrically connected to the drive circuit, and the power supply circuit can supply power to the drive circuit with different supply voltages.

[0009] In some embodiments of this disclosure, the power supply circuit includes a buck-boost circuit for increasing or decreasing the input voltage to output the power supply voltage.

[0010] In some embodiments of this disclosure, the driving circuit includes a driving chip for optical image stabilization and / or a driving chip for autofocus; or, the driving circuit includes a driving chip for both optical image stabilization and autofocus.

[0011] In some embodiments of this disclosure, the driving mechanism includes a motor for moving the lens in a first plane and / or in an optical axis direction perpendicular to the first plane.

[0012] In some embodiments of this disclosure, the motor includes:

[0013] Base;

[0014] An elastic support member is connected to the base;

[0015] Mounting base, the mounting base being connected to the elastic support member, the lens being mounted on the mounting base;

[0016] A shape memory alloy part is connected between the base and the elastic support and is electrically connected to the drive circuit. The shape memory alloy part is used to drive the mounting base to move when heated by the drive circuit.

[0017] In some embodiments of this disclosure, the driving circuit includes:

[0018] A current source, wherein a first end of the current source is electrically connected to the power supply circuit, and a second end of the current source is electrically connected to the first end of the shape memory alloy portion;

[0019] A transistor, wherein a first end of the transistor is electrically connected to a second end of the shape memory alloy portion, and the second end of the transistor is used to be electrically connected to a ground terminal.

[0020] In some embodiments of this disclosure, the shape memory alloy portion includes a plurality of shape memory alloy lines located on a plurality of mutually perpendicular second planes, and the number of transistors is a plurality;

[0021] The first end of each shape memory alloy wire is electrically connected to the second end of the current source, the second end of each shape memory alloy wire is electrically connected to the first end of a transistor, and the second end of each transistor is electrically connected to the ground terminal.

[0022] In some embodiments of this disclosure, the supply voltage is between 1.8V and 3.3V.

[0023] In some embodiments of this disclosure, the power supply voltage is related to the target distance that the lens needs to move.

[0024] In some embodiments of this disclosure, the target distance includes a first distance for optical image stabilization in a first plane, or a second distance for autofocus in an optical axis direction perpendicular to the first plane.

[0025] In some embodiments of this disclosure, when the target distance is greater than or equal to a preset distance, the power supply voltage is a first voltage; when the target distance is less than the preset distance, the power supply voltage is a second voltage.

[0026] Wherein, the first voltage is greater than the second voltage; or,

[0027] The power supply voltage is positively correlated with the target distance.

[0028] According to a second aspect of this disclosure, an electronic device is provided, the electronic device including a camera module as described above.

[0029] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0030] The camera module includes a lens, a drive mechanism, a drive circuit, and a power supply circuit. The lens is mounted on the drive mechanism, and the drive circuit is electrically connected to both the power supply circuit and the drive mechanism. The power supply circuit supplies power to the drive mechanism to move the lens. Because the power supply circuit can supply power to the drive circuit with different voltages, it avoids always supplying a high voltage across various lens movement distances, thereby reducing the power consumption of the camera module.

[0031] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0032] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0033] Figure 1 This is a structural diagram of a camera module;

[0034] Figure 2 This is a schematic diagram of the structure of a camera module provided in an exemplary embodiment of this disclosure;

[0035] Figure 3 This is a schematic diagram of the structure of a camera module provided in another exemplary embodiment of this disclosure;

[0036] Figure 4 This is a schematic diagram of the structure of a camera module provided in another exemplary embodiment of this disclosure;

[0037] Figure 5 This is a schematic diagram of the structure of a camera module provided in another exemplary embodiment of this disclosure;

[0038] Figure 6 This is a schematic diagram of the structure of a camera module provided in another exemplary embodiment of this disclosure;

[0039] Figure 7 This is a schematic diagram illustrating the relationship between the power supply voltage and the power consumption of the camera module according to an exemplary embodiment of this disclosure;

[0040] Figure 8 This is a system block diagram of an electronic device provided in an exemplary embodiment of the present disclosure.

[0041] In the picture:

[0042] 1-Lens module; 2-First power supply circuit; 3-Second power supply circuit; 10-Lens; 20-Drive mechanism; 21-Base; 22-Elastic support; 23-Mounting base; 24-Shape memory alloy part; 30-Drive circuit; 40-Power supply circuit; 241-Shape memory alloy wire; 400-Electronic device; 402-Processing component; 404-Memory; 406-Power supply component; 408-Multimedia component; 410-Audio component; 412-Input / output interface; 414-Sensor component; 416-Communication component; 420-Processor; ICS-Current source; T-Transistor; GND-Ground terminal. Detailed Implementation

[0043] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this invention as detailed in the appended claims. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0044] Currently, the drive mechanism of camera modules in electronic devices can move the lens to achieve optical image stabilization and autofocus, thereby improving the quality of captured images. Optical image stabilization refers to the use of sensors such as gyroscopes and accelerometers to detect the direction and acceleration of the electronic device's movement during shooting, and to adjust the lens position in real time to avoid blurry images. Autofocus refers to the automatic adjustment of the lens's focus during shooting to ensure that the captured image is sharp.

[0045] In related technologies, a camera module is provided, such as Figure 1As shown, the camera module includes a lens module 1, a first power supply circuit 2, and a second power supply circuit 3. The lens module 1 is electrically connected to both the first power supply circuit 2 and the second power supply circuit 3. The first power supply circuit 2 supplies power to the drive circuit for optical image stabilization (OIS) in the lens module 1, enabling OIS functionality. The second power supply circuit 3 supplies power to the drive circuit for autofocus in the lens module 1, enabling autofocus functionality. Both the first power supply circuit 2 and the second power supply circuit 3 are low dropout regulator (LDO) power supplies, and both supply voltages to the two drive circuits are 3.3V. However, during image capture, regardless of whether OIS is required, the first power supply circuit 2 always supplies power to the drive circuit for OIS at 3.3V. When the required lens movement distance is very small or even zero, the drive circuit for OIS does not require a 3.3V supply voltage, leading to increased power consumption in the drive circuit. During image capture, the second power supply circuit 3 consistently supplies power to the autofocus drive circuit at a voltage of 3.3V, regardless of whether autofocus is required. When the target distance that the lens needs to move is very small or even zero, the autofocus drive circuit does not require a 3.3V power supply, leading to increased power consumption. Therefore, the camera module suffers from high power consumption during image capture.

[0046] Based on this, this disclosure provides a camera module that replaces the low-dropout linear stabilizer power supply with a power supply circuit with an adjustable supply voltage. Since the power supply circuit can supply power to the drive circuit at different supply voltages, when the distance the lens needs to move is very small, the power supply circuit can supply power to the drive circuit at a supply voltage of less than 3.3V. Because the supply voltage of the drive circuit is reduced, the power consumption of the drive circuit is reduced, thereby reducing the power consumption of the camera module.

[0047] An exemplary embodiment of this disclosure provides a camera module, such as Figure 2 As shown, the camera module includes a lens 10, a drive mechanism 20, a drive circuit 30, and a power supply circuit 40. The lens 10 is mounted on the drive mechanism 20, which drives the lens 10 to move. The drive circuit 30 is electrically connected to the drive mechanism 20 and drives the drive mechanism 20 to move. The power supply circuit 40 is electrically connected to the drive circuit 30 and supplies power to the drive circuit 30. The power supply circuit 40 can supply power to the drive circuit 30 with different supply voltages.

[0048] In this embodiment, the camera module includes a lens, a drive mechanism, a drive circuit, and a power supply circuit. The lens is mounted on the drive mechanism, and the drive circuit is electrically connected to both the power supply circuit and the drive mechanism. The power supply circuit supplies power to the drive mechanism to move the lens. Because the power supply circuit can supply power to the drive circuit with different supply voltages, it avoids always supplying a high supply voltage under various movement distances of the lens, thereby reducing the power consumption of the camera module.

[0049] In one embodiment, the power supply circuit 40 includes a buck-boost circuit for increasing or decreasing the input voltage to output a power supply voltage.

[0050] In this embodiment, when the voltage of the input power supply circuit is higher than the power supply voltage required by the drive circuit, the buck-boost circuit can reduce the input voltage to meet the low-voltage power supply requirements of the drive circuit. When the voltage of the input power supply circuit is lower than the power supply voltage required by the drive circuit, the buck-boost circuit can increase the input voltage to meet the high-voltage power supply requirements of the drive circuit. By using a buck-boost circuit as the power supply circuit, the input voltage can be both increased and decreased to meet the different power supply voltage requirements of the drive circuit, thereby improving the stability of the camera module.

[0051] For example, a buck-boost circuit may include a DC-DC converter circuit such as a Buck or Boost circuit.

[0052] In one embodiment, the driving circuit 30 includes a driving chip for optical image stabilization.

[0053] In this embodiment, since the power supply voltage for the driver chip used for optical image stabilization is variable, the power consumption of the driver circuit is reduced when the optical image stabilization function is implemented, thereby reducing the power consumption of the camera module.

[0054] In one embodiment, the driving circuit 30 includes a driving chip for autofocus.

[0055] In this embodiment, since the power supply voltage for the driver chip used for autofocus is variable, the power consumption of the driver circuit is reduced when the autofocus function is implemented, thereby reducing the power consumption of the camera module.

[0056] In one embodiment, the driving circuit 30 includes a driving chip for optical image stabilization and a driving chip for autofocus.

[0057] In this embodiment, since the power supply voltage for the drive chip used for optical image stabilization and the drive chip used for autofocus is variable, the power consumption of the drive circuit is reduced when implementing the optical image stabilization function and the autofocus function, thereby reducing the power consumption of the camera module.

[0058] For example, the driver chip for optical image stabilization and the driver chip for autofocus are two different driver chips. When powering the two driver chips, they need to be powered by two different sub-power supply circuits in the driver circuit 30.

[0059] In one embodiment, the driving circuit 30 includes a driving chip for optical image stabilization and autofocus.

[0060] In this embodiment, since the power supply voltage for the driver chip used for optical image stabilization and autofocus is variable, the power consumption of the driver circuit is reduced when implementing optical image stabilization and autofocus functions, thereby reducing the power consumption of the camera module. Furthermore, since the driver chip has both optical image stabilization and autofocus functions, the number of sub-power supply circuits in the driver chip and power supply circuit is reduced, thereby reducing the size of the camera module.

[0061] In one embodiment, the drive mechanism 20 includes a motor for moving the lens 10 along a first plane.

[0062] In this embodiment, the simple structure of the motor reduces the complexity of the camera module structure by using the motor to move the lens. Furthermore, since the motor can move the lens on the first plane, optical image stabilization is achieved, thereby improving the image capture quality.

[0063] For example, the first plane can be the XY plane.

[0064] In one embodiment, the drive mechanism 20 includes a motor for moving the lens 10 in an optical axis direction perpendicular to the first plane.

[0065] In this embodiment, the simple structure of the motor reduces the complexity of the camera module structure by using the motor to move the lens. Furthermore, since the motor can move the lens along the optical axis, it enables autofocus, thereby improving the image capture quality.

[0066] For example, the optical axis direction is the Z-axis direction.

[0067] In one embodiment, the drive mechanism 20 includes a motor for moving the lens 10 in a direction perpendicular to the first plane and an optical axis.

[0068] In this embodiment, the motor can move the lens both on the first plane and along the optical axis, thus simultaneously achieving optical image stabilization and autofocus. Since only one motor is needed, the number of motors in the camera module is reduced, thereby decreasing the overall size of the camera module.

[0069] For example, when the drive circuit 30 includes a drive chip for optical image stabilization and a drive chip for autofocus, the number of motors is two. When the drive circuit 30 includes drive chips for both optical image stabilization and autofocus, the number of motors is one.

[0070] In one embodiment, such as Figure 3 As shown, the motor includes a base 21, an elastic support 22, a mounting base 23, and a shape memory alloy (SMA) portion 24. The elastic support 22 is connected to the base 21. The mounting base 23 is connected to the elastic support 22, and the lens 10 is mounted on the mounting base 23. The shape memory alloy portion 24 is connected between the base 21 and the elastic support 22 and is electrically connected to the drive circuit 30. The shape memory alloy portion 24 is used to move the mounting base 23 when heated by the drive circuit 30.

[0071] In this embodiment, the motor includes a base, an elastic support, a mounting base, and a shape memory alloy section, making it a shape memory alloy motor. When the motor moves, the drive circuit inputs current to the shape memory alloy section, causing the shape memory alloy to expand and contract due to heat. Because the shape memory alloy section can move the lens after expansion and contraction, optical image stabilization and autofocus functions are achieved, thereby improving the reliability of the camera module.

[0072] In one embodiment, such as Figure 4 As shown, the driving circuit 30 includes a current source ICS and a transistor T. The first terminal of the current source ICS is electrically connected to the power supply circuit 40, and the second terminal of the current source ICS is electrically connected to the first terminal of the shape memory alloy portion 24. The first terminal of the transistor T is electrically connected to the second terminal of the shape memory alloy portion 24, and the second terminal of the transistor T is used to connect to the ground terminal GND.

[0073] In this embodiment, since the current source can provide a stable current output, the power supply circuit supplies power to the shape memory alloy part through the current source, avoiding the impact of current fluctuations on the expansion and contraction of the shape memory alloy part, thereby improving the stability of the camera module. Furthermore, since the transistor is located within its corresponding operating area, it can act as a variable resistor to regulate the current. By electrically connecting the transistor between the shape memory alloy part and the ground terminal, the current flowing through the shape memory alloy part can be changed, allowing the expansion and contraction of the shape memory alloy part to meet the requirements. By accurately controlling the degree of expansion and contraction of the shape memory alloy part, the effects of optical image stabilization and autofocus are optimized, thereby improving the image capture quality.

[0074] For example, transistor T can be either a P-type field-effect transistor or an N-type field-effect transistor. When transistor T is an N-type field-effect transistor, the first terminal of transistor T is the drain, and the second terminal of transistor T is the source.

[0075] For example, the current output by the current source ICS can be between 30mA and 50mA, such as 30mA, 35mA, 40mA, 45mA and 50mA.

[0076] In one embodiment, such as Figure 3 and Figure 5 As shown, the shape memory alloy section includes multiple shape memory alloy wires 241 located on multiple mutually perpendicular second planes, and multiple transistors T. The first end of each shape memory alloy wire 241 is electrically connected to the second end of a current source ICS, and the second end of each shape memory alloy wire 241 is electrically connected to the first end of a transistor T. The second end of each transistor T is used to connect to the ground terminal GND.

[0077] In this embodiment, by setting multiple shape memory alloy lines on multiple mutually perpendicular second planes, the cooperation and expansion of these lines allows movement along the first plane and the optical axis to achieve optical image stabilization and autofocus, thereby reducing the size of the camera module. Furthermore, by adjusting the variable resistor of the transistor, the current flowing through each shape memory alloy line can be adjusted, allowing for fine-tuning of the lens movement distance and improving image capture quality. Simultaneously, since the first end of each shape memory alloy line is electrically connected to a current source, the fluctuation of the current flowing through each line is relatively small, thus improving the accuracy of the shape memory alloy line's expansion and contraction.

[0078] For example, the number of shape memory alloy wires 241 and transistors T can both be 4, 8, etc. Multiple shape memory alloy wires 241 can be located on four second planes perpendicular to the XY plane; that is, the first plane is perpendicular to the second plane.

[0079] In one embodiment, the supply voltage is between 1.8V and 3.3V.

[0080] In this embodiment, when the target distance to be moved by the lens is large, the power supply circuit provides a 3.3V supply voltage to meet the power supply requirements of the drive circuit. When the target distance to be moved by the lens is small, the power supply circuit provides a 1.8V supply voltage to meet the power supply requirements of the drive circuit. By keeping the supply voltage of the power supply circuit between 1.8V and 3.3V, the power supply circuit can adjust the supply voltage while meeting the power supply requirements of the drive circuit, thereby reducing the power consumption of the camera module.

[0081] For example, such as Figure 6 and Figure 7As shown, when the power supply voltage output by the power supply circuit 40 is 3.3V, the power supply circuit 40 can output a current of 40mA to the drive circuit 30 to achieve optical image stabilization or autofocus. When the power supply voltage output by the power supply circuit 40 is adjusted from 3.3V to 1.8V, the power supply circuit 40 can still output a current of 40mA to the drive circuit 30 to achieve optical image stabilization or autofocus. That is, the reduction in power supply voltage does not affect the effect of optical image stabilization or autofocus. Due to the reduction in power supply voltage, the power consumption of the camera module is reduced by P = 40 * (3.3 - 1.8) = 60mW. When shooting for a long time, the cumulative power consumption benefit is very large. The horizontal axis represents the current output by the power supply circuit, and the vertical axis represents the power consumption.

[0082] For example, during the process of power supply circuit 40 supplying power to drive circuit 30, the voltage relationship in drive circuit 30 is expressed by the following formula:

[0083] Vin = Vics + Vsma + Vmos + Vpath;

[0084] Wherein, Vin is the power supply voltage output by the power supply circuit, Vics is the voltage of the current source, Vsma is the voltage of the multiple shape memory alloy wires, Vmos is the voltage of the transistor, and Vpath is the loss voltage.

[0085] In one embodiment, the power supply voltage is related to the target distance that the lens 10 needs to move.

[0086] In this embodiment, since the power supply voltage is related to the target distance that the lens needs to move, the power supply circuit is prevented from always supplying power to the drive circuit at a high power supply voltage, thereby reducing the power consumption of the camera module.

[0087] In one embodiment, the target distance includes a first distance in the first plane used for optical image stabilization.

[0088] In this embodiment, during the process of implementing optical image stabilization in the camera module, the power supply voltage can be adjusted according to the target distance, thereby reducing the power consumption of the camera module.

[0089] In one embodiment, the target distance includes a second distance for autofocus in the optical axis direction perpendicular to the first plane.

[0090] In this embodiment, during the process of the camera module implementing the autofocus function, the power supply voltage can be adjusted according to the target distance, thereby reducing the power consumption of the camera module.

[0091] In one embodiment, when the target distance is greater than or equal to a preset distance, the power supply voltage is a first voltage. When the target distance is less than the preset distance, the power supply voltage is a second voltage. The first voltage is greater than the second voltage.

[0092] In this embodiment, when the target distance is greater than the preset distance, it indicates a larger target distance, requiring a higher power supply voltage from the drive circuit. Conversely, when the target distance is less than the preset distance, it indicates a smaller target distance, requiring a lower power supply voltage from the drive circuit. By comparing the target distance with the preset distance, the power supply circuit can provide an appropriate voltage to the drive circuit based on the target distance, avoiding insufficient lens movement and excessive power consumption in the drive circuit, thereby improving the reliability of the camera module.

[0093] For example, the first voltage can be 3.3V and the second voltage can be 1.8V.

[0094] In one embodiment, the supply voltage is positively correlated with the target distance.

[0095] In this embodiment, the greater the target distance, the greater the distance the drive circuit drives the drive mechanism to move, and the greater the power supply voltage required by the drive circuit. By making the power supply voltage positively correlated with the target distance, the power supply circuit can provide a precise power supply voltage according to the target distance, thereby improving the reliability of the camera module.

[0096] An exemplary embodiment of this disclosure provides a camera module, such as Figure 3 and Figure 5 As shown, the camera module includes a lens 10, a base 21, an elastic support 22, a mounting base 23, eight shape memory alloy wires 241, a current source ICS, eight transistors T, and a power supply circuit 40. The elastic support 22 is connected to both the base 21 and the mounting base 23. The lens 10 is mounted on the mounting base 23. The eight shape memory alloy wires 241 are connected between the base 21 and the elastic support 22. The first terminal of the current source ICS is electrically connected to the power supply circuit 40, and the second terminal of the current source ICS is electrically connected to the first terminals of all eight shape memory alloy wires 241. The second terminals of the eight shape memory alloy wires 241 are each electrically connected to the first terminals of the eight transistors T. The second terminals of the eight transistors T are electrically connected to the ground terminal GND.

[0097] During shooting, when the target distance that the lens 10 needs to move is less than the preset distance, the power supply voltage provided by the power supply circuit 40 is 1.8V. When the target distance that the lens 10 needs to move is greater than the preset distance, the power supply voltage provided by the power supply circuit 40 is 3.3V.

[0098] In one exemplary embodiment, an electronic device is provided, which includes a camera module as described above. The electronic device may be, for example, a mobile phone, a laptop computer, a tablet computer, or a wearable device.

[0099] refer to Figure 8As shown, the electronic device 400 may include one or more of the following components: a processing component 402, a memory 404, a power supply component 406, a multimedia component 408, an audio component 410, an input / output (I / O) interface 412, a sensor component 414, and a communication component 416.

[0100] Processing component 402 typically controls the overall operation of electronic device 400, such as operations associated with display, telephone calls, data communication, camera operation, and recording. Processing component 402 may include one or more processors 420 to execute instructions to perform all or part of the steps of the methods described above. Furthermore, processing component 402 may include one or more modules to facilitate interaction between processing component 402 and other components. For example, processing component 402 may include a multimedia module to facilitate interaction between multimedia component 408 and processing component 402.

[0101] Memory 404 is configured to store various types of data to support the operation of electronic device 400. Examples of this data include instructions for any application or method operating on electronic device 400, contact data, phonebook data, messages, pictures, videos, etc. Memory 404 can be implemented by any type of volatile or non-volatile storage terminal or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0102] Power supply component 406 provides power to various components of electronic device 400. Power supply component 406 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to electronic device 400.

[0103] Multimedia component 408 includes a screen that provides an output interface between electronic device 400 and user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of touch or swipe actions but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 408 includes a front-facing camera module and / or a rear-facing camera module. When electronic device 400 is in an operating mode, such as shooting mode or video mode, the front-facing camera module and / or rear-facing camera module may receive external multimedia data. Each front-facing camera module and rear-facing camera module may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0104] Audio component 410 is configured to output and / or input audio signals. For example, audio component 410 includes a microphone (MIC) configured to receive external audio signals when electronic device 400 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 404 or transmitted via communication component 416. In some embodiments, audio component 410 also includes a speaker for outputting audio signals.

[0105] I / O interface 412 provides an interface between processing component 402 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0106] Sensor assembly 414 includes one or more sensors for providing state assessments of various aspects of electronic device 400. For example, sensor assembly 414 may detect the on / off state of electronic device 400, the relative positioning of components such as the display and keypad of electronic device 400, changes in position of electronic device 400 or a component of electronic device 400, the presence or absence of user contact with electronic device 400, orientation or acceleration / deceleration of electronic device 400, and temperature changes of electronic device 400. Sensor assembly 414 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 414 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 414 may also include an accelerometer, gyroscope, magnetometer, pressure sensor, or temperature sensor.

[0107] Communication component 416 is configured to facilitate wired or wireless communication between electronic device 400 and other terminals. Electronic device 400 can access wireless networks based on communication standards, such as WiFi, 2G, 3G, 4G, 5G, or combinations thereof. In one exemplary embodiment, communication component 416 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 416 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0108] In an exemplary embodiment, the electronic device 400 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing terminals (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components.

[0109] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0110] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0111] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the claims.

[0112] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A camera module, characterized in that, The camera module includes: Lens; A drive mechanism, wherein the lens is mounted on the drive mechanism, and the drive mechanism is used to drive the lens to move; A drive circuit, which is electrically connected to the drive mechanism, is used to drive the drive mechanism to move; A power supply circuit is electrically connected to the drive circuit, and the power supply circuit can supply power to the drive circuit with different supply voltages.

2. The camera module according to claim 1, characterized in that, The power supply circuit includes a step-up / step-down circuit, which is used to increase or decrease the input voltage to output the power supply voltage.

3. The camera module according to claim 1, characterized in that, The driving circuit includes a driving chip for optical image stabilization and / or a driving chip for autofocus; or, the driving circuit includes a driving chip for both optical image stabilization and autofocus.

4. The camera module according to claim 1, characterized in that, The driving mechanism includes a motor, which is used to move the lens in the direction of the optical axis perpendicular to the first plane and / or the first plane.

5. The camera module according to claim 4, characterized in that, The motor includes: Base; An elastic support member is connected to the base; Mounting base, the mounting base being connected to the elastic support member, the lens being mounted on the mounting base; A shape memory alloy part is connected between the base and the elastic support and is electrically connected to the drive circuit. The shape memory alloy part is used to drive the mounting base to move when heated by the drive circuit.

6. The camera module according to claim 5, characterized in that, The driving circuit includes: A current source, wherein a first end of the current source is electrically connected to the power supply circuit, and a second end of the current source is electrically connected to the first end of the shape memory alloy portion; A transistor, wherein a first end of the transistor is electrically connected to a second end of the shape memory alloy portion, and the second end of the transistor is used to be electrically connected to a ground terminal.

7. The camera module according to claim 6, characterized in that, The shape memory alloy portion includes a plurality of shape memory alloy wires located on a plurality of mutually perpendicular second planes. The number of transistors is a plurality. The first end of each shape memory alloy wire is electrically connected to the second end of the current source. The second end of each shape memory alloy wire is electrically connected to the first end of a transistor. The second end of each transistor is electrically connected to the ground terminal.

8. The camera module according to claim 1, characterized in that, The supply voltage is between 1.8V and 3.3V.

9. The camera module according to any one of claims 1 to 8, characterized in that, The power supply voltage is related to the target distance that the lens needs to move.

10. The camera module according to claim 9, characterized in that, The target distance includes a first distance for optical image stabilization in the first plane, or a second distance for autofocus in the optical axis direction perpendicular to the first plane.

11. The camera module according to claim 9, characterized in that, When the target distance is greater than or equal to a preset distance, the power supply voltage is a first voltage; when the target distance is less than the preset distance, the power supply voltage is a second voltage. Wherein, the first voltage is greater than the second voltage; or, The power supply voltage is positively correlated with the target distance.

12. An electronic device, characterized in that, The electronic device includes a camera module as described in any one of claims 1 to 11.

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