CN111479044B

CN111479044B - Electronic equipment and camera module thereof

Info

Publication number: CN111479044B
Application number: CN202010289006.0A
Authority: CN
Inventors: 董富伟
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-04-14
Filing date: 2020-04-14
Publication date: 2022-04-12
Anticipated expiration: 2040-04-14
Also published as: CN111479044A

Abstract

The application relates to an electronic device and a camera module thereof, wherein the camera module comprises a lens base, a lens, an optical sensor and a stepping motor, and the stepping motor is connected with the lens base and is used for driving the lens to move relative to the optical sensor; the liquid lens is arranged in the lens and comprises a closed cavity, and a conductive fluid and an insulating fluid which are filled in the closed cavity, wherein the conductive fluid and the insulating fluid are separated by an interface between the conductive fluid and the insulating fluid, the refractive indexes of the conductive fluid and the insulating fluid are different, and an electrode group is arranged on the side wall of the closed cavity. The utility model provides an electronic equipment and camera module thereof, the camera lens takes step motor to drive to obtain great promotion stroke, and be provided with the liquid lens in the camera lens, can adapt to the macro and focus the needs, effectively improve focusing range, then a camera module can satisfy the long distance and focus, closely focus and the many scenes of macro focus the needs of focusing, in order to reduce the setting quantity of camera module in the electronic equipment, be favorable to the electronic equipment miniaturization.

Description

Electronic equipment and camera module thereof

Technical Field

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

Background

As a common function of electronic devices such as mobile phones and tablet computers, users have higher and higher requirements for the quality of shot pictures, so that designs such as anti-shake and auto-focus during shooting of the electronic devices become more important.

In the conventional camera module, the lens is generally driven to move by a Voice Coil Motor (VCM) to complete the focusing. The voice coil motor utilizes the interactive mode realization of coil and magnet to drive the camera, and along with the performance promotion of camera module, the camera size is bigger and bigger, and the camera lens is also bigger and bigger, and the user also requires more and more (need control within 5 cm) to the distance that the micro-distance was shot simultaneously.

However, the existing voice coil motor has insufficient thrust, and the stroke for pushing the lens to move is too small, so that the voice coil motor cannot meet the shooting requirement from long-distance focusing to micro-distance focusing, and usually a long-distance camera module and a micro-distance camera module need to be configured in the electronic equipment separately, and the arrangement of a plurality of camera modules is not favorable for the miniaturization of the electronic equipment.

Disclosure of Invention

The embodiment of the application provides a camera module and electronic equipment comprising the camera module, which can meet the requirement of focusing in a large range and is beneficial to miniaturization of electronic equipment.

In one aspect, the present application provides a lens group comprising:

the lens base is of a hollow cavity structure;

the lens comprises a lens barrel and a liquid lens arranged on the lens barrel;

the optical sensor is arranged in the cavity of the lens base and is opposite to the lens, and the optical axis of the lens is approximately vertical to the surface of the photosensitive area of the optical sensor;

the stepping motor is connected with the lens base and is used for driving the lens barrel to move along the optical axis of the lens relative to the optical sensor;

the liquid lens comprises a closed cavity, and a conductive fluid and an insulating fluid which are filled in the closed cavity, wherein the conductive fluid and the insulating fluid are mutually insoluble and have equal densities, the conductive fluid and the insulating fluid are separated by an interface between the conductive fluid and the insulating fluid, the refractive indexes of the conductive fluid and the insulating fluid are different, an electrode group is arranged on the side wall of the closed cavity, and the electrode group is used for electrifying the conductive fluid so as to adjust the contact angle between the interface and the side wall of the closed cavity.

In one embodiment, a protruding lug is arranged on the outer wall of the lens barrel, a guide rod is fixedly connected to the lens base, the protruding lug is connected with the guide rod in a sliding mode, a threaded portion in threaded fit with the protruding lug is arranged on an output shaft of the stepping motor, or a screw rod in threaded fit with the protruding lug is connected to the output shaft of the stepping motor, so that the stepping motor can drive the lens barrel to move up and down along the guide rod relative to the optical sensor in a threaded mode.

In one embodiment, an optical filter is disposed in the lens holder, and the optical filter is located between the lens and the optical sensor.

In one embodiment, a plurality of solid lenses are further installed in the lens barrel, and the liquid lens is located between the plurality of solid lenses or on the same side of the plurality of solid lenses.

In one embodiment, the camera module comprises a circuit board, the optical sensor is arranged on the circuit board, the lens base is connected with the circuit board and the optical sensor cover is arranged in the lens base, so that light emitted by the lens can enter a light sensing area of the optical sensor.

In one embodiment, the electrode group of the liquid lens is electrically connected with the circuit board through a lead, and the lead is embedded in the lens base through in-film injection molding.

In one embodiment, an oleophilic hydrophobic layer is disposed on an inner wall of the closed cavity, and the oleophilic hydrophobic layer is used for electrically isolating the conductive fluid from a side wall of the closed cavity.

In one embodiment, when the voltage of the electrode group is greater than the critical voltage, the side of the interface corresponding to the insulating fluid presents a convex arc surface;

when the voltage of the electrode group is less than the critical voltage, one side of the interface, which is opposite to the insulating fluid, presents a concave arc surface;

wherein the threshold voltage is a voltage at which the electrode set causes the interface to be planar.

In one embodiment, the conductive fluid is deionized water and the insulating fluid is silicone oil.

On the other hand, the application provides an electronic device, including foretell camera module.

The utility model provides an electronic equipment and camera module thereof, the camera lens of camera module takes step motor to drive, in order to obtain great promotion stroke, satisfy the camera lens and focus the needs on a large scale, and be provided with the liquid lens in the camera lens and carry out the two-stage process and focus, can adapt to the macro and focus the needs, effectively improve the focusing range, then a camera module can satisfy the long distance and focus, closely focus and the many scenes of macro focus the needs of focusing, in order to reduce the camera module's in the electronic equipment quantity that sets up, be favorable to the electronic equipment miniaturization.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a perspective view of an electronic device according to an embodiment;

fig. 2 is a schematic structural diagram of a camera module according to an embodiment;

FIG. 3 is a schematic structural diagram of another embodiment of a camera module;

FIG. 4 is a schematic diagram of an embodiment of a camera module according to which light is incident on an optical sensor along an optical axis;

FIG. 5 is a schematic view of an interface of a liquid lens in a camera module according to an embodiment;

fig. 6 is a schematic view of an interface of a liquid lens in another state in the camera module according to an embodiment;

FIG. 7 is a schematic view of an embodiment of a camera module with a liquid lens interface in another state;

FIG. 8 is a schematic view illustrating a state of a camera module during focusing shooting according to an embodiment;

FIG. 9 is a schematic view illustrating another state of the camera module during focusing shooting according to an embodiment;

FIG. 10 is a schematic view illustrating another state of the camera module during focusing shooting according to an embodiment;

fig. 11 is a schematic structural diagram of an electronic device according to an embodiment.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are given in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The electronic device of this application embodiment, electronic device can be cell-phone, panel computer, notebook computer, intelligent bracelet, intelligent wrist-watch, intelligent helmet, intelligent glasses etc.. The embodiment of the present invention will be described by taking an example that the electronic device is a mobile phone, and it is understood that the specific form of the electronic device may be other, and is not limited herein.

Referring to fig. 1, the electronic device includes a main body 100 and a camera module 200, wherein the camera module 200 is disposed on the main body 100 and is used for capturing images.

The body 100 includes a housing 101 and a display 110 connected to the housing 101, wherein an accommodating space is formed between the housing 101 and the display 110, the accommodating space is used for accommodating internal parts of the electronic device, and the housing 101 can protect the internal parts of the electronic device. The housing 101 may be a rear cover of the electronic device and cover components such as a battery and a motherboard of the electronic device.

The camera module 200 can be installed on the housing 101, and when shooting is needed, the camera module 200 can receive external light to image.

As shown in fig. 2 and 3, the camera module 200 includes a lens 210 for processing light, and a light sensor 220 for receiving the light processed by the lens 210 to form an image. The photosensor 220 has a photosensitive area 220a (shown in fig. 4), and the photosensitive area 220a can generate a photoelectric effect when irradiated by light to perform imaging. Types of the light sensor 220 may include a CCD (charge coupled) element, a CMOS (complementary metal oxide conductor) device, a photodiode, and the like. The light sensor 220 may be a color light sensor, a monochromatic light sensor, an infrared light sensor, a gray sensor, and the like, divided from colors.

The camera module 200 has an imaging optical axis 200b, and the imaging optical axis 200b is defined by the internal optics of the lens 210. When the lens 210 and the optical sensor 220 are assembled to form the camera module 200 according to the requirement of optical path installation, the surface of the photosensitive area 220a of the optical sensor 220 is substantially perpendicular to the imaging optical axis 200b, specifically, when the camera module 200 performs shooting, external light enters the photosensitive area 220a of the optical sensor 220 along the direction of the imaging optical axis 200b, so that the photosensitive area 220a is illuminated by light to form an image.

It should be noted that "along the imaging optical axis 200b of the camera module 200" does not mean that the propagation direction of all the light rays incident on the optical sensor 220 is completely coincident with or parallel to the direction of the imaging optical axis 200 b. For example, some of the light rays incident on the optical sensor 220 along the imaging optical axis 200b of the camera module 200 are coincident with or parallel to the imaging optical axis 200b, and some of the light rays are at a certain angle with the imaging optical axis 200b, as long as the light rays can enter the camera module 200 and irradiate the photosensitive area 220a of the optical sensor 220 to meet the imaging requirement of the optical sensor 220.

In some embodiments, the camera module 200 may be fixedly disposed in the housing 101, and a light-transmitting part or a light-transmitting area is disposed on the housing 101, so that light outside the housing 101 can be incident on the camera module 200, thereby meeting the shooting requirements of the camera module 200. The transparent component may be transparent plastic or transparent glass, the casing 101 may also be partially made of transparent material to form a transparent area, or may be made of transparent material completely, so that light can penetrate into the electronic device from the outside and enter the light incident surface 200a of the camera module 200, so as to meet the shooting requirement of the camera module 200.

In other embodiments, the camera module 200 may also be movably disposed on the body 100. For example, the main body 100 is provided with an accommodating groove for accommodating the camera module 200, the camera module 200 moves relative to the main body 100 and can be selectively located in an accommodating state and an extending state, in the accommodating state, the camera module 200 is located in the accommodating groove, and the camera module 200 at this time is shielded by the casing 101 on the periphery of the main body 100, so that the camera module 200 is prevented from being exposed to damage the overall appearance of the electronic device. In the extended state, the camera module 200 extends out of the accommodating slot, so that external light can be incident into the camera module 200 through the imaging optical axis 200b of the camera module 200 to meet the imaging requirement of the camera module 200.

It should be noted that the camera module 200 can be used as a front-end camera, for example, in the electronic device shown in fig. 1, the light incident surface 200a of the camera module 200 is exposed at the side of the displayable region 110a of the display screen 110. In other embodiments, the arrangement position of the camera module 200 in the body 100 is adapted to be adjusted, so that the light incident surface 200a faces away from one side of the displayable region 110a of the display screen 110, that is, the camera module 200 can be used for rear-end shooting, and the shooting angle of the camera module 200 relative to the body 100 is not limited herein.

As shown in fig. 2, in some embodiments, the lens 210 includes a lens barrel 211 and a liquid lens 212 mounted on the lens barrel 211. The lens barrel 211 is used as a carrier for mounting the liquid lens 212, and can adapt to the situation that light rays pass through the liquid lens 212 without blocking the light rays entering the liquid lens 212, and the structure of the lens barrel 211 can be cylindrical and provided with through holes for mounting the liquid lens 212.

Further, a plurality of solid lenses 213 are mounted in the lens barrel 211. As shown in fig. 2, the liquid lens 212 is located on the same side of the plurality of solid lenses 213, or, as shown in fig. 3, the liquid lens 212 is located between the solid lenses 213. In this embodiment, the liquid lens 212 and the solid lens 213 are combined to form an optical path system of the lens 210 of the camera module 200, so that the light processed by the lens 210 enters the photosensitive area 220a of the photosensor 220. It should be noted that the kind, number and arrangement of the lenses disposed in the lens barrel 211 are not limited herein.

As shown in fig. 5 to 7, the liquid lens 212 includes a closed cavity, and a conductive fluid 212a and an insulating fluid 212b filling the closed cavity.

The enclosed cavity may be formed by enclosing a light incident side 2121, a peripheral side and a light emitting side 2122, wherein the light incident side 2121 and the light emitting side 2122 are respectively capable of passing light therethrough, for example, a transparent glass plate or a plastic plate is used to form the light incident side 2121 and the light emitting side 2122. The periphery is enclosed between the light incident side 2121 and the light emitting side 2122, and the inner wall is provided with an oleophilic hydrophobic layer 2123, so that the conductive fluid 212a has a more precise contact angle regulation effect when generating an electrowetting effect.

The conductive fluid 212a and the insulating fluid 212b are immiscible and have equal density, and are separated by an interface 212c therebetween, the conductive fluid 212a and the insulating fluid 212b have different refractive indexes, and an electrode group is disposed on a sidewall of the closed cavity, and is used for adjusting the state of the liquid lens 212 when the electrode group is energized, so that light passing through the liquid lens 212 presents different focusing or diverging. In particular, the electrode set is used to energize the conductive fluid to adjust the contact angle of the interface with the side wall of the enclosed cavity, thereby causing the shape of the interface to change.

The optical principle of the liquid lens 212 will be further described below with only three states of the liquid lens 212 shown in fig. 5 to 7.

For convenience of description, the end of the electrode set electrically connected to the conductive fluid 212a is referred to as a "first electrode 2124", and correspondingly, the end electrically connected to ground is referred to as a "second electrode 2125", and the second electrode 2125 may be connected to the closed cavity to realize grounding. Since the conductive fluid 212a is electrically isolated from the sidewalls of the enclosed cavity by the oleophilic hydrophobic layer 2123, the electrowetting response produced is different when the voltage V applied to the first and

second electrodes

2124 and 2125 of the electrode set is different.

Referring to fig. 5, when the voltage V applied to the first electrode 2124 and the second electrode 2125 of the electrode set is a critical voltage, for example, 37V, the conductive fluid 212a generates an electrowetting effect, the interface 212c between the conductive fluid 212a and the insulating fluid 212b is a plane, and the propagation direction of the parallel light passing through the interface 212c along the optical axis is not changed, and in this case, the liquid lens 212 corresponds to a flat lens.

As shown in fig. 6, when the voltage V applied to the first electrode 2124 and the second electrode 2125 of the electrode set is less than the threshold voltage, for example, when the voltage V of the electrode set is 0V, the conductive fluid 212a does not generate the electrowetting effect, the interface 212c between the conductive fluid 212a and the insulating fluid 212b is in a natural state, the side of the interface 212c corresponding to the insulating fluid 212b is a concave arc surface, and the refractive indexes of the conductive fluid 212a and the insulating fluid 212b are different, so that the light is refracted when passing through the interface 212c, and the parallel light is diffused, that is, the liquid lens 212 functions as a concave lens.

Referring to fig. 7, when the voltage V applied to the first electrode 2124 and the second electrode 2125 of the electrode set is greater than the threshold voltage, for example, 50V, the conductive fluid 212a generates an electrowetting effect, and the side of the interface 212c between the conductive fluid 212a and the insulating fluid 212b opposite to the insulating fluid 212b presents a convex arc surface, so that due to the different refractive indexes of the conductive fluid 212a and the insulating fluid 212b, the light ray propagating along the optical axis is refracted and focused when passing through the interface 212c, that is, the liquid lens 212 functions as a convex lens.

By changing the voltage V applied to the conductive fluid 212a by the electrode group, the contact angle between the conductive fluid 212a and the sidewall of the closed cavity is changed, and the shape of the interface 212c is changed to adjust the emitting direction of the light.

The degree of the shape change of the interface 212c is related to the magnitude of the voltage V provided by the electrode set, and the material of the conductive fluid 212 a. Different materials, at the same voltage, have different electrowetting effects. That is, with different conductive fluids 212a, the shape achieved by the interface 212c will vary when the electrode sets provide the same voltage level.

In some embodiments, the conductive fluid 212a may be deionized water and the insulating fluid 212b may be silicone oil. The materials of the conductive fluid 212a and the insulating fluid 212b are not limited herein, and only the electrowetting effect is required to generate the shape change at the interface 212 c.

When the interface 212c is deformed into different shapes, the liquid lens 212 will have different light condensing or light scattering effects, and further, when the contact angle of the interface 212c is changed by using the electrowetting of the electrode group to the conductive fluid 212a, the direction of the light emitted by the liquid lens 212 can be adjusted.

In the above embodiment, referring to fig. 2 and fig. 3 again, the camera module 200 includes the lens holder 230 and the stepping motor 240, the stepping motor 240 is connected to the lens holder 230 and is used to drive the lens barrel 211 to move along the optical axis of the lens 210 relative to the optical sensor 220, so that the stepping motor 240 is used to move the lens 210 in a long stroke, and in cooperation with dimming of the liquid lens 212, the multi-scene requirements of long-distance focusing and micro-distance focusing are realized, so that the electronic device can realize long-distance shooting and long-distance shooting by setting one camera module 200, thereby reducing the number of the camera modules 200, which not only saves cost, but also facilitates miniaturization of the electronic device.

Since the stepping motor 240 drives the lens 210 and focuses the liquid lens 212 independently, the two have a plurality of focusing combinations, and for the convenience of understanding, the following description is only provided by way of example, but not by way of limitation.

For example, in conjunction with fig. 8-10, three focusing configurations are shown. Specifically, as shown in fig. 8, the stepping motor 240 drives the lens 210 to move to the first position, and for convenience of description, the first position is assumed to be an initial position corresponding to the lens 210 after the stepping motor 240 is initialized. In this state, the liquid lens 212 in the lens 210 can make the interface 212c between the conductive fluid 212a and the insulating fluid 212b present a plane by adjusting the voltage V of the electrode set, so that the lens 210 can process the light in this state and make the light incident on the photosensitive area 220a of the photosensor 220 for focus shooting. As further shown in fig. 9, the stepping motor 240 drives the lens 210 to move away from the optical sensor 220 to a second position, in which the liquid lens 212 in the lens 210 can adjust the voltage V of the electrode set, so that the interface 212c between the conductive fluid 212a and the insulating fluid 212b is concave. As shown in fig. 10, in the state of fig. 9, the stepping motor 240 may continue to drive the lens 210 away from the optical sensor 220 to move to a third position, in which the liquid lens 212 in the lens 210 may adjust the voltage V of the electrode set, so that the interface 212c between the conductive fluid 212a and the insulating fluid 212b presents a convex surface. In the above embodiment, the large-range focusing is realized by the large-stroke movement of the position of the lens 210 by the stepping motor 240, and the lens 210 has a plurality of focusing forms in cooperation with the adjustment of the electrode group to the interface of the liquid lens 212, so as to meet the requirements of long-distance focusing and macro-distance focusing, thereby widening the application range of the camera assembly in shooting.

Referring to fig. 2 and 3, a protrusion 211a is disposed on an outer wall of the lens barrel 211, the lens holder 230 is fixedly connected with a guide rod 250, the protrusion 211a is slidably connected with the guide rod 250, and the number of the guide rods 250 may be multiple, so as to improve the smoothness of the movement of the lens barrel 211 relative to the optical sensor 220. The output shaft 240a of the stepping motor 240 is provided with a threaded portion in threaded fit with the lug 211a, or the output shaft 240a of the stepping motor 240 is connected with a screw in threaded fit with the lug 211a, so that the stepping motor 240 can be screwed with the transmission lens barrel 211 to move up and down along the guide rod 250 relative to the optical sensor 220, thereby realizing large-stroke focusing on the lens 210, and by adopting the structure, the precision of the stepping motor 240 is high, the minimum moving step distance of 1.5um can be achieved, that is, the moving distance of the lens 210 relative to the optical sensor 220 can be accurate to 1.5um, and the micro-distance adjustment is beneficial to improving the focusing precision.

The lens holder 230 is provided with a filter 260 therein, and the filter 260 is located between the lens 210 and the optical sensor 220 and is used for filtering the light emitted from the lens 210, so that the light incident on the optical sensor 220 has no stray light interference, and a better imaging effect is obtained. For example, in some embodiments, the filter 260 may filter out infrared light in the light, so that the light sensor 220 is not interfered by the infrared light when imaging, so as to improve the imaging effect.

In some embodiments, the camera module 200 includes a circuit board 200c, the optical sensor 220 is disposed on the circuit board 200c, and the lens holder 230 is connected to the circuit board 200c and covers the optical sensor 220 therein, so that light emitted from the lens 210 can enter the photosensitive area 220a of the optical sensor 220, and the light optically processed by the lens 210 enters the photosensitive area 220a for imaging.

The optical sensor 220 is mounted on the circuit board 200c in the form of a patch, and the optical sensor 220 may be adhered to the circuit board 200c by glue.

It should be noted that the circuit board 200c may be a rigid circuit board or a flexible circuit board, and the type of the circuit board 200c is not limited herein. It is understood that the circuit board 200c may be printed with a circuit to electrically connect with the optical sensor 220, so that an electrical signal generated when the photosensitive region 220a of the optical sensor 220 is illuminated to generate an optoelectronic effect may be transmitted from the circuit board 200c to a corresponding functional module such as a controller, an image processor, a memory, etc.

The electrode group of the liquid lens 212 is electrically connected to the circuit board 200c through a lead wire, and the lead wire is embedded in the lens holder 230 through in-film injection molding.

Referring to fig. 11, fig. 11 is a schematic structural diagram of an electronic device 100 according to an embodiment of the present disclosure. The electronic device 100 may include Radio Frequency (RF) circuitry 501, memory 502 including one or more computer-readable storage media, input unit 503, display unit 504, sensor 505, audio circuitry 506, Wireless Fidelity (WiFi) module 507, processor 508 including one or more processing cores, and power supply 509. Those skilled in the art will appreciate that the configuration of electronic device 100 shown in FIG. 11 does not constitute a limitation of electronic device 100, and may include more or fewer components than shown, or some components in combination, or a different arrangement of components.

The rf circuit 501 may be used for receiving and transmitting information, or receiving and transmitting signals during a call, and in particular, receives downlink information of a base station and then sends the received downlink information to one or more processors 508 for processing; in addition, data relating to uplink is transmitted to the base station. In general, radio frequency circuit 501 includes, but is not limited to, an antenna, at least one Amplifier, a tuner, one or more oscillators, a Subscriber Identity Module (SIM) card, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, the radio frequency circuit 501 may also communicate with a network and other devices through wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to Global System for Mobile communications (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), email, Short Message Service (SMS), and the like.

The memory 502 may be used to store applications and data. Memory 502 stores applications containing executable code. The application programs may constitute various functional modules. The processor 508 executes various functional applications and data processing by executing application programs stored in the memory 502. The memory 502 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the electronic apparatus 100, and the like. Further, the memory 502 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device. Accordingly, the memory 502 may also include a memory controller to provide the processor 508 and the input unit 503 access to the memory 502.

The input unit 503 may be used to receive input numbers, character information, or user characteristic information (such as a fingerprint), and generate a keyboard, mouse, joystick, optical, or trackball signal input related to user setting and function control. In particular, in one particular embodiment, the input unit 503 may include a touch-sensitive surface as well as other input devices. The touch-sensitive surface, also referred to as a touch display screen or a touch pad, may collect touch operations by a user (e.g., operations by a user on or near the touch-sensitive surface using a finger, a stylus, or any other suitable object or attachment) thereon or nearby, and drive the corresponding connection device according to a predetermined program. Alternatively, the touch sensitive surface may comprise two parts, a touch detection means and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 508, and can receive and execute commands sent by the processor 508.

The display unit 504 may be used to display information input by or provided to the user as well as various graphical user interfaces of the electronic device 100, which may be made up of graphics, text, icons, video, and any combination thereof. The display unit 504 may include a display panel. Alternatively, the Display panel may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

Further, the touch-sensitive surface may overlay the display panel, and when a touch operation is detected on or near the touch-sensitive surface, the touch operation is transmitted to the processor 508 to determine the type of touch event, and then the processor 508 provides a corresponding visual output on the display panel according to the type of touch event.

Although in FIG. 11 the touch-sensitive surface and the display panel are two separate components to implement input and output functions, in some embodiments the touch-sensitive surface may be integrated with the display panel to implement input and output functions. It is understood that the display screen 110 may include an input unit 503 and a display unit 504.

The electronic device 100 may also include at least one sensor 505, such as the light sensor 220, motion sensor, and other sensors. Specifically, the light sensor 220 may include an ambient light sensor 220 and a proximity sensor, wherein the ambient light sensor 220 may adjust the brightness of the display panel according to the brightness of the ambient light, and the proximity sensor may turn off the display panel and/or the backlight when the electronic device 100 is moved to the ear. As one of the motion sensors, the gravity acceleration sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when the mobile phone is stationary, and can be used for applications of recognizing the posture of the mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which may be further configured to the electronic device 100, detailed descriptions thereof are omitted.

The audio circuit 506 may provide an audio interface between the user and the electronic device 100 through a speaker, microphone. The audio circuit 506 can convert the received audio data into an electrical signal, transmit the electrical signal to a speaker, and convert the electrical signal into a sound signal to output; on the other hand, the microphone converts the collected sound signal into an electrical signal, which is received by the audio circuit 506 and converted into audio data, which is then processed by the audio data output processor 508 and then transmitted to, for example, another electronic device 100 via the rf circuit 501, or output to the memory 502 for further processing. The audio circuitry 506 may also include an earphone jack to provide communication of a peripheral earphone with the electronic device 100.

Wireless fidelity (WiFi) belongs to short-range wireless transmission technology, and the electronic device 100 can help the user send and receive e-mail, browse web pages, access streaming media and the like through the wireless fidelity module 507, and provides wireless broadband internet access for the user. Although fig. 11 shows the wireless fidelity module 507, it is understood that it does not belong to the essential constitution of the electronic device 100, and may be omitted entirely as needed within the scope not changing the essence of the invention.

The processor 508 is a control center of the electronic device 100, connects various parts of the whole electronic device 100 by using various interfaces and lines, performs various functions of the electronic device 100 and processes data by running or executing an application program stored in the memory 502 and calling data stored in the memory 502, thereby monitoring the whole electronic device 100. Optionally, processor 508 may include one or more processing cores; preferably, the processor 508 may integrate an application processor, which primarily handles operating systems, user interfaces, application programs, etc., and a modem processor, which primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 508.

The electronic device 100 also includes a power supply 509 to power the various components. Preferably, the power supply 509 may be logically connected to the processor 508 through a power management system, so that the power management system may manage charging, discharging, and power consumption. The power supply 509 may also include any component such as one or more dc or ac power sources, recharging systems, power failure detection circuitry, power converters or inverters, power status indicators, and the like.

Although not shown in fig. 11, the electronic device 100 may further include a bluetooth module or the like, which is not described herein. In specific implementation, the above modules may be implemented as independent entities, or may be combined arbitrarily to be implemented as the same or several entities, and specific implementation of the above modules may refer to the foregoing method embodiments, which are not described herein again.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a camera module which characterized in that includes:

the lens base is of a hollow cavity structure;

the lens comprises a lens barrel and a liquid lens arranged on the lens barrel;

the liquid lens comprises a closed cavity, and a conductive fluid and an insulating fluid which are filled in the closed cavity, wherein the conductive fluid and the insulating fluid are mutually insoluble and have equal densities, the conductive fluid and the insulating fluid are separated by an interface between the conductive fluid and the insulating fluid, the refractive indexes of the conductive fluid and the insulating fluid are different, an electrode group is arranged on the side wall of the closed cavity, and the electrode group is used for electrifying the conductive fluid so as to adjust the contact angle between the interface and the side wall of the closed cavity;

the camera module comprises a circuit board, the optical sensor is arranged on the circuit board, the lens base is connected with the circuit board and covers the optical sensor in the lens base, so that light rays emitted by the lens can enter a photosensitive area of the optical sensor; the electrode group of the liquid lens is electrically connected with the circuit board through a lead, the lead is embedded in the lens base through intramembrane injection molding, and when the voltage of the electrode group is less than the critical voltage, one side of the interface, which is opposite to the insulating fluid, presents a concave cambered surface; the critical voltage is the voltage of the electrode group when the interface is in a plane, when the voltage of the electrode group is 0V, the side of the interface corresponding to the insulating fluid presents a concave arc surface, and when the voltage of the electrode group is 50V, the side of the interface corresponding to the insulating fluid presents a convex arc surface.

2. The camera module according to claim 1, wherein a protrusion is disposed on an outer wall of the lens barrel, a guide rod is fixedly connected to the lens base, the protrusion is slidably connected to the guide rod, and an output shaft of the stepping motor has a threaded portion in threaded engagement with the protrusion, or an output shaft of the stepping motor is connected to a threaded rod in threaded engagement with the protrusion, so that the stepping motor can be screwed to drive the lens barrel to move up and down along the guide rod relative to the optical sensor.

3. The camera module according to claim 1, wherein a filter is disposed in the lens holder, and the filter is located between the lens and the optical sensor.

4. The camera module according to claim 1, wherein a plurality of solid lenses are further mounted in the lens barrel, and the liquid lens is located between the plurality of solid lenses or on the same side of the plurality of solid lenses.

5. The camera module of claim 1, wherein the light sensor comprises a CCD element, a CMOS device, or a photodiode.

6. The camera module of claim 1, wherein the electrode assembly comprises a first electrode and a second electrode, the first electrode is electrically connected to the conductive fluid, and the second electrode is electrically connected to the enclosed cavity.

7. The camera module according to claim 1, wherein an oleophilic hydrophobic layer is disposed on an inner wall of the enclosed cavity, and the oleophilic hydrophobic layer is configured to electrically isolate the conductive fluid from a sidewall of the enclosed cavity.

8. The camera module of claim 7, wherein when the voltage across the electrode assembly is greater than the threshold voltage, the interface presents a convex curved surface on a side thereof opposite to the insulating fluid.

9. The camera module of claim 1, wherein the conductive fluid is deionized water and the insulating fluid is silicone oil.

10. An electronic device, comprising the camera module according to any one of claims 1 to 9.