Camera device and intelligent terminal

Abstract

The utility model provides a camera device and an intelligent terminal, the camera device comprises a transmission part, a lens assembly and a piezoelectric driving assembly, the piezoelectric driving assembly is in transmission connection with the transmission part, and the transmission part is in transmission connection with the lens assembly. The piezoelectric driving assembly drives the transmission member to rotate so as to drive the lens assembly to move along the optical axis direction. According to the camera device, the optical performance can be improved, and the appearance of the intelligent terminal is lighter, thinner and more attractive.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display devices, in particular to a camera device and a smart terminal. BACKGROUND

[0002] With the continuous development of smart terminals, the imaging quality requirements of mobile phone camera modules are increasingly high, and the size and height of the camera modules are also increasing. Although large-size camera modules can provide better optical performance, such as higher pixels and better low-light shooting effects, they often lead to an increase in the overall thickness of the mobile phone, which is difficult to meet the trend of lightweight and thin design of terminal devices.

[0003] In the process of conceiving and implementing the present application, the inventors found that at least the following problems exist: The existing camera modules usually adopt a fixed structure design, which can improve the imaging quality but increases the overall height after being assembled into a terminal device. On the one hand, the camera module protrudes from the back of the device shell, which destroys the overall aesthetics of the terminal product and is inconsistent with the trend of lightweight and thin design. Moreover, the protruding part is easily damaged when subjected to external forces (such as impact or drop), which reduces the durability of the product. On the other hand, the shortcomings in the appearance design not only affect the user's satisfaction with the product, but also weaken the market competitiveness of the terminal product. Therefore, it has become a technical problem that needs to be solved urgently to improve the optical performance while achieving the lightweight and thin design of the terminal device.

[0004] The foregoing discussion is presented solely to provide a general understanding of the general context in which the application is used and is not intended to be a definition of the prior art. CONTENT OF THE UTILITY MODEL

[0005] The purpose of the present application is to provide a camera device that can improve optical performance and achieve lightweight and thin design of a terminal device.

[0006] To solve the above technical problems, the present application provides a camera device, comprising: a transmission member, a lens assembly, and a piezoelectric driving assembly, wherein the piezoelectric driving assembly is in transmission connection with the transmission member, the transmission member is in transmission connection with the lens assembly, and the piezoelectric driving assembly drives the transmission member to rotate and move the lens assembly along the optical axis.

[0007] Optionally, the piezoelectric driving assembly comprises a piezoelectric member and a driving chip, the driving chip is arranged on the piezoelectric member and is in electrical connection with the piezoelectric member, the piezoelectric member is arranged on one side of the transmission member along a direction perpendicular to the optical axis, and the piezoelectric member generates deformation in a first direction perpendicular to the optical axis under the voltage applied by the driving chip, and drives the transmission member to reciprocatingly rotate and move the lens assembly along the optical axis.

[0008] Optionally, the piezoelectric element comprises a piezoelectric element body and a friction part connected to the piezoelectric element body, the friction part is in contact with the transmission part, the driving chip is arranged on the piezoelectric element body, the piezoelectric element body generates deformation along the first direction under the voltage applied by the driving chip, drives the friction part to reciprocate along the first direction, and drives the transmission part to reciprocate to drive the lens assembly to move along the optical axis.

[0009] Optionally, the piezoelectric element further comprises a placing hole arranged on the piezoelectric element body, and the driving chip is arranged in the placing hole.

[0010] Optionally, the camera further comprises a guide assembly, the lens assembly is arranged in the transmission part, the transmission part is in transmission connection with the lens assembly through the guide assembly, and the guide assembly is used to limit the displacement of the lens assembly along the optical axis.

[0011] Optionally, the guide assembly comprises a first guide part arranged on the lens assembly and a first guide rail arranged on the transmission part, and the first guide part is movably arranged in the first guide rail.

[0012] Optionally, the first guide rail is arranged obliquely on the transmission part, the first guide rail comprises oppositely arranged first and second ends, when the first guide part is located at the first end, the height of the top end of the lens assembly is lower than the height of the top end of the transmission part along the optical axis, and when the first guide part is located at the second end, the height of the top end of the lens assembly is higher than the height of the top end of the transmission part along the optical axis.

[0013] Optionally, the camera comprises at least one of the following:

[0014] The lens assembly comprises a lens barrel and at least one lens, the lens is arranged in the lens barrel, the lens barrel is arranged in the transmission part, and the first guide part is arranged on opposite sides of the lens barrel.

[0015] The transmission part comprises a transmission part body and a transmission part arranged at one end of the transmission part body, the first guide rail is arranged on opposite sides of the transmission part body, and the transmission part is in transmission connection with the piezoelectric driving assembly.

[0016] Optionally, the guide assembly comprises a guide shaft sleeve and a second guide rail arranged on the transmission part, the guide shaft sleeve is arranged between the lens assembly and the transmission part and is movably connected with the second guide rail.

[0017] Optionally, the guide bushing includes a guide bushing body and a second guide member connected to the guide bushing body. The second guide member is movably disposed within the second guide rail, and the lens assembly is detachably disposed within the guide bushing body.

[0018] Optionally, the guide bushing further includes a support portion located at one end of the guide bushing body, and the lens assembly is detachably connected to the support portion.

[0019] This application also relates to a smart terminal, including the aforementioned camera device.

[0020] The camera device of this application drives the transmission component to rotate through a piezoelectric drive component, thereby moving the lens assembly along the optical axis and realizing the telescopic movement of the lens assembly. This not only effectively improves optical performance, but also makes the overall appearance thin and beautiful. The camera device has a simple structure and is easy to manufacture and maintain.

[0021] The above description is merely an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0022] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0023] Figure 1 A schematic diagram of the hardware structure of a mobile terminal to implement the various embodiments of this application;

[0024] Figure 2 A communication network system architecture diagram provided for an embodiment of this application;

[0025] Figure 3 This is a three-dimensional structural diagram of the camera device of this application in its fully retracted state;

[0026] Figure 4 This is a three-dimensional structural diagram of the camera device in its extended state according to this application;

[0027] Figure 5 yes Figure 4 A cross-sectional structural diagram of the central camera device;

[0028] Figure 6 is a perspective view of the camera device of the present application in a fully extended state;

[0029] Figure 7 is a top view of the camera device of the present application;

[0030] Figure 8 is a perspective view of the camera device of the present application in an extended state;

[0031] Figure 9 is a cross-sectional view of the camera device of the present application. Figure 8

[0032] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments, with reference to the accompanying drawings. The above-described drawings have shown the explicit embodiments of the present application, and the following will have more detailed description. These drawings and the written description are not intended to limit the scope of the present application concept by any means, but to illustrate the present application concept to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0033] The exemplary embodiments will be described in detail herein with reference to the accompanying drawings. The following description is presented with reference to the drawings, wherein the same reference numerals are used to refer to like or similar elements throughout the several views. The embodiments described in the following exemplary embodiments are not meant to represent all implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as detailed in the appended claims.

[0034] It should be noted that, in this document, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without more limitations, an element defined by an "including a" statement does not exclude the existence of additional identical elements in the process, method, article, or apparatus that includes the element. Optionally, components, features, elements with the same name in different embodiments can have the same or different meanings, which should be determined according to the explanation of the component, feature, element in the specific embodiment or further combined with the context of the specific embodiment.

[0035] ​It should be understood that although the terms first, second, third, etc., may be used herein to describe various information, such information should not be limited to these terms. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this document, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if," as used herein, may be interpreted as "when," "when," or "in response to determination." Furthermore, as used herein, the singular forms "a," "an," and "the" are intended to also include the plural forms unless the context indicates otherwise. It should be further understood that the terms "comprising," "including," indicate the presence of the stated feature, step, operation, element, component, item, kind, and / or group, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms "or," "and / or," "including at least one of the following," etc., as used in this application, may be interpreted as inclusive, or mean any one or any combination thereof. For example, "including at least one of the following: A, B, C" means "any one of the following: A; B; C; A and B; A and C; B and C; A and B and C." Similarly, "A, B, or C" or "A, B, and / or C" means "any one of the following: A; B; C; A and B; A and C; B and C; A and B and C." Exceptions to this definition only occur when the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0036] It should be understood that although the steps in the flowcharts of this application's embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some of the steps in the figures may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be performed alternately or in turn with other steps or at least a portion of the sub-steps or stages of other steps.

[0037] Depending on the context, the words “if” or “suppose” as used here can be interpreted as “when” or “in response to determination” or “in response to detection.” Similarly, depending on the context, the phrases “if determination” or “if detection (of the stated condition or event)” can be interpreted as “when determination” or “in response to determination” or “when detection (of the stated condition or event)” or “in response to detection (of the stated condition or event).”

[0038] It should be understood that the specific embodiments described herein are merely illustrative of the application and should not be construed as limiting the application.

[0039] In the following description, the suffixes "module", "part", or "unit" used for components are merely intended for facilitating a description of the present application, and are not intended to limit the present application. Therefore, "module", "part", or "unit" can be mixedly used.

[0040] The smart terminal can be implemented in various forms. For example, the smart terminal described in the present application can include a smart terminal such as a smartphone, a tablet, a notebook, a palmtop, a Personal Digital Assistant (PDA), a Portable Media Player (PMP), a navigation device, a wearable device, a smart band, a pedometer, and the like, and a fixed terminal such as a digital TV, a desktop computer, and the like.

[0041] The smart terminal will be described as an example in the following description, and those skilled in the art will understand that the configuration according to the embodiments of the present application can be applied to a terminal of a fixed type, except for elements particularly used for mobile purposes.

[0042] Figure 1 A hardware structure of a mobile terminal to implement the embodiments of the present application is illustrated in FIG. 1. Figure 1 A hardware structure of a smart terminal to implement the embodiments of the present application is illustrated in FIG. 1, and the smart terminal 100 can include an RF (Radio Frequency) unit 101, a WiFi module 102, an audio output unit 103, an A / V (audio / video) input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109, a processor 110, and a power supply 111, and the like. Those skilled in the art will understand that the smart terminal structure illustrated in FIG. 1 does not constitute a limitation on the smart terminal, and the smart terminal can include more or less components than those illustrated, or combine certain components, or arrange components differently. Figure 1 A hardware structure of a smart terminal to implement the embodiments of the present application is illustrated in FIG. 1, and the smart terminal 100 can include an RF (Radio Frequency) unit 101, a WiFi module 102, an audio output unit 103, an A / V (audio / video) input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109, a processor 110, and a power supply 111, and the like. Those skilled in the art will understand that the smart terminal structure illustrated in FIG. 1 does not constitute a limitation on the smart terminal, and the smart terminal can include more or less components than those illustrated, or combine certain components, or arrange components differently.

[0043] The smart terminal will be described as an example in the following description, and those skilled in the art will understand that the configuration according to the embodiments of the present application can be applied to a terminal of a fixed type, except for elements particularly used for mobile purposes. Figure 1 The components of the smart terminal will be described in detail as follows:

[0044] The radio frequency unit 101 can be used for receiving and transmitting signals in the process of transmitting / receiving information or a call. Specifically, the radio frequency unit 101 receives the downlink information of the base station and provides the received information to the processor 110 for processing. In addition, the radio frequency unit 101 transmits the uplink data of the terminal to the base station. Generally, the radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc. In addition, the radio frequency unit 101 can communicate with the network and other devices through wireless communication. The wireless communication can use any communication standard or protocol, including but not limited to the Global System for Mobile communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access 2000 (CDMA2000), Wideband Code Division Multiple Access (WCDMA), Time Division-Synchronous Code Division Multiple Access (TD-SCDMA), Frequency Division Duplexing-Long Term Evolution (FDD-LTE), Time Division Duplexing-Long Term Evolution (TDD-LTE), 5G, etc.

[0045] The WiFi belongs to a short-range wireless transmission technology. The WiFi module 102 can help the user to send and receive e-mails, browse web pages, and access streaming media, etc. The WiFi module 102 provides the user with wireless broadband Internet access. Although the WiFi module 102 is shown, it is understood that it is not a necessary component of the smart terminal, and can be omitted as needed without changing the essence of the application. Figure 1 The WiFi module 102 is shown, but it is understood that it is not a necessary component of the smart terminal, and can be omitted as needed without changing the essence of the application.

[0046] The audio output unit 103 can convert audio data, which is received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109, into an audio signal and output the audio signal as sound when the smart terminal 100 is in a call signal reception mode, a speech mode, a recording mode, a voice recognition mode, a broadcast reception mode, etc. In addition, the audio output unit 103 can provide audio output (e.g., a call signal reception sound, a message reception sound, etc.) related to a particular function performed by the smart terminal 100. The audio output unit 103 can include a speaker, a buzzer, etc.

[0047] The A / V input unit 104 is configured to receive audio or video signals. The A / V input unit 104 can include a graphics processing unit (GPU) 1041 and a microphone 1042. The graphics processing unit 1041 processes image data of a still picture or a video obtained by an image capture device (e.g., a camera) in a video capture mode or an image capture mode. Processed image frames can be displayed on the display unit 106. Processed image frames can be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 can receive sound (audio data) via the microphone 1042 in a telephone call mode, a recording mode, a voice recognition mode, or the like, and can process such sound into audio data. Processed audio (voice) data can be converted into a format that can be transmitted to a mobile communication base station via the radio frequency unit 101 in the case of a telephone call mode. The microphone 1042 can implement various types of noise cancellation (or suppression) algorithms to cancel (or suppress) noise or interference generated in the process of receiving and transmitting audio signals.

[0048] The intelligent terminal 100 further includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Optionally, the light sensor includes an ambient light sensor and a proximity sensor. The ambient light sensor can adjust the brightness of the panel 1061 according to the brightness of ambient light, and the proximity sensor can turn off the panel 1061 and / or the backlight when the intelligent terminal 100 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), and can detect the magnitude and direction of gravity when at rest, which can be used for applications of identifying the posture of the mobile phone (such as switching between landscape and portrait screens, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometers, tapping), and the like. The intelligent terminal can also be configured with a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, and other sensors, which will not be described here.

[0049] The display unit 106 is configured to display information input by a user or information provided to the user. The display unit 106 can include a display panel 1061, which can be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.

[0050] The user input unit 107 can be used to receive inputted numerical or character information, and to generate key signal inputs related to user settings of the intelligent terminal and control of functions. Optionally, the user input unit 107 can include a touch panel 1071 and other input devices 1072. The touch panel 1071, also called a touch screen, can collect touch operations of a user thereon or adjacent thereto (such as operations of the user using a finger, a stylus, or any suitable object or accessory on or adjacent to the touch panel 1071), and drive corresponding connection devices according to a pre-set program. The touch panel 1071 can include two parts, a touch detection device and a touch controller. The touch detection device detects the touch position of the user and detects signals caused by touch operations, and transmits the signals to the touch controller; the touch controller receives touch information from the touch detection device, converts it into touch coordinates, and sends it to the processor 110, and can also receive commands from the processor 110 and execute them. In addition, the touch panel 1071 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 can also include other input devices 1072. Optionally, the other input devices 1072 can include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, on / off keys, etc.), a trackball, a mouse, a joystick, etc., without limitation.

[0051] Optionally, the touch panel 1071 can cover the display panel 1061, and when the touch panel 1071 detects a touch operation thereon or adjacent thereto, it transmits to the processor 110 to determine the type of touch event, and then the processor 110 provides corresponding visual output on the panel 1061 according to the type of touch event. Although in the above embodiment, the touch panel 1071 and the display panel 1061 are implemented as two independent components to realize the input and output functions of the intelligent terminal, in some embodiments, the touch panel 1071 and the display panel 1061 can be integrated to realize the input and output functions of the intelligent terminal, without limitation. Figure 1

[0052] The interface unit 108 serves as an interface through which at least one external device can be connected to the intelligent terminal 100. For example, the external device can include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input / output (I / O) port, a video I / O port, an earphone port, etc. The interface unit 108 can be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the intelligent terminal 100, or can be used to transmit data between the intelligent terminal 100 and an external device. ​

[0053] The memory 109 can be used to store software programs and various data. The memory 109 can mainly include a program storage area and a data storage area, and the program storage area can store an operating system, application programs required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; and the data storage area can store data created according to the use of the mobile phone (such as audio data, a phone book, etc.), and the like. In addition, the memory 109 can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state memory device.

[0054] The processor 110 is the control center of the intelligent terminal, connects all parts of the intelligent terminal through various interfaces and lines, executes various functions of the intelligent terminal and processes data by running or executing software programs and / or modules stored in the memory 109 and calling data stored in the memory 109, and thus monitors the intelligent terminal as a whole. The processor 110 can include one or more processing units; preferably, the processor 110 can integrate an application processor and a modem processor, and the application processor can mainly process an operating system, a user interface, and application programs, and the like, and the modem processor can mainly process wireless communication. It can be understood that the above-mentioned modem processor can also not be integrated into the processor 110.

[0055] The intelligent terminal 100 can also include a power supply 111 (such as a battery) for supplying power to various components; preferably, the power supply 111 can be logically connected to the processor 110 through a power management system, so as to realize the functions of managing charging, discharging, and power consumption management, and the like through the power management system.

[0056] Although Figure 1 The intelligent terminal 100 can also include a Bluetooth module and the like, which are not described herein again.

[0057] In order to facilitate the understanding of the embodiments of the present application, the communication network system based on the intelligent terminal of the present application is described below.

[0058] Please refer to Figure 2 , Figure 2 A communication network system architecture diagram provided by the embodiments of the present application, the communication network system is the LTE system of the general mobile communication technology, the LTE system includes the UE (User Equipment, user equipment) 201, E-UTRAN (Evolved UMTS Terrestrial Radio Access Network, evolved UMTS terrestrial radio access network) 202, EPC (Evolved Packet Core, evolved packet core network) 203 and operator's IP service 204 which are sequentially connected in communication.

[0059] Optionally, the UE 201 can be the terminal 100 described above, which will not be repeated here.

[0060] The E-UTRAN 202 includes eNode B 2021 and other eNode Bs 2022. Optionally, the eNode B 2021 can be connected with the other eNode Bs 2022 through backhaul (for example, X2 interface), the eNode B 2021 is connected to the EPC 203, and the eNode B 2021 can provide access for the UE 201 to the EPC 203.

[0061] The EPC 203 can include MME (Mobility Management Entity) 2031, HSS (Home Subscriber Server) 2032, other MMEs 2033, SGW (Serving GateWay) 2034, PGW (PDN Gate Way) 2035, and PCRF (Policy and Charging Rules Function) 2036. Optionally, the MME 2031 is a control node for processing signaling between the UE 201 and the EPC 203, and provides bearer and connection management. The HSS 2032 is used to provide some registers to manage functions such as a home location register (not shown in the figure), and to save some user-specific information about service features, data rates, etc. All user data can be transmitted through the SGW 2034, the PGW 2035 can provide IP address allocation and other functions for the UE 201, and the PCRF 2036 is a policy and charging control policy decision point for service data flow and IP bearer resources, which selects and provides available policy and charging control decisions for policy and charging enforcement function units (not shown in the figure).

[0062] The IP service 204 can include the Internet, an intranet, an IMS (IP Multimedia Subsystem), or other IP services.

[0063] Although the above describes the LTE system as an example, those skilled in the art should know that the present application is not only applicable to the LTE system, but also applicable to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, 5G, and future new network systems (such as 6G), etc., which are not limited here.

[0064] Based on the above intelligent terminal hardware structure and communication network system, various embodiments of the present application are proposed.

[0065] First embodiment

[0066] Figure 3 is a perspective structural schematic diagram of the camera device in a fully retracted state according to the first embodiment of the present application, Figure 4 is a perspective structural schematic diagram of the camera device in an extended state according to the first embodiment of the present application, Figure 5 is Figure 4 is a cross-sectional structural schematic diagram of the camera device, Figure 6 is a perspective structural schematic diagram of the camera device in a fully extended state according to the first embodiment of the present application, as Figures 3-6 shown, the camera device comprises a transmission member 1, a lens assembly 2, and a piezoelectric driving assembly 3, the piezoelectric driving assembly 3 is in transmission connection with the transmission member 1, the transmission member 1 is in transmission connection with the lens assembly 2, and the piezoelectric driving assembly 3 drives the transmission member 1 to rotate to drive the lens assembly 2 to move along the optical axis direction.

[0067] The camera device drives the transmission member 1 to rotate by the piezoelectric driving assembly 3 to drive the lens assembly 2 to move along the optical axis direction, so as to realize the extension and retraction movement of the lens assembly 2. When the camera device works, the lens assembly 2 moves along the optical axis direction and is in the best working position, fully plays the optical performance advantage, improves the imaging quality, and meets the demand of high-quality shooting of consumers; when the camera device does not work, the lens assembly 2 moves along the optical axis direction and is retracted, is installed on the intelligent terminal, and can effectively reduce the thickness and volume of the intelligent terminal, so that the whole is lighter and thinner and more beautiful, improves the portability and durability of the intelligent terminal, and at the same time, the camera device of the present application has simple structure, easy to manufacture and maintain.

[0068] Optionally, Figure 7 is a top view schematic diagram of the camera device according to the first embodiment of the present application, as Figures 3-4 and Figures 6-7 shown, the piezoelectric driving assembly 3 comprises a piezoelectric member 31 and a driving chip 32, the driving chip 32 is arranged on the piezoelectric member 31 and is in electrical connection with the piezoelectric member 31, the piezoelectric member 31 is arranged on one side of the transmission member 1 along the direction perpendicular to the optical axis, the piezoelectric member 31 generates deformation along the first direction A perpendicular to the optical axis under the voltage applied by the driving chip 32, and drives the transmission member 1 to reciprocatingly rotate to drive the lens assembly 2 to move along the optical axis direction.

[0069] In the embodiment, when the driving chip 32 applies voltage to the piezoelectric element 31, the piezoelectric element 31 generates deformation along the first direction A perpendicular to the optical axis direction, thereby generating friction force on the transmission member 1, and driving the transmission member 1 to reciprocating rotation movement to drive the lens assembly 2 to move along the optical axis direction. The first direction A includes a first sub-direction A1 and a second sub-direction A2, which are opposite directions; when the camera is working, the driving chip 32 applies a positive voltage to the piezoelectric element 31, so that the piezoelectric element 31 swings slightly along the first sub-direction A1, and the generated friction force drives the transmission member 1 to rotate clockwise to drive the lens assembly 2 to move out along the optical axis direction; when the camera stops working, the driving chip 32 applies a reverse voltage to the piezoelectric element 31, so that the piezoelectric element 31 swings slightly along the second sub-direction A2, and the generated friction force drives the transmission member 1 to rotate counterclockwise to drive the lens assembly 2 to move in along the optical axis direction.

[0070] Optionally, the piezoelectric element 31 is made of piezoelectric material. The piezoelectric material may, for example, be piezoelectric ceramic, which is an electronic ceramic material capable of converting electrical energy into mechanical energy. The spontaneous polarization vectors generated by the ferroelectric grains in the piezoelectric ceramic are randomly oriented, and after a voltage is applied, the polarization vector direction is oriented along the direction of the electric field. Therefore, the piezoelectric element 31 can generate deformation along the first direction A perpendicular to the optical axis direction under the voltage applied by the driving chip 32.

[0071] Since the piezoelectric material has the characteristics of fast response and large thrust, it can enable the transmission member 1 to quickly adjust the position of the lens assembly 2 for fast focusing. Meanwhile, the piezoelectric element 31 is made of non-magnetic material, which will not cause magnetic interference to other elements of the camera or electronic equipment using the camera.

[0072] Optionally, as shown in Figures 3-4 and Figures 6-7 , the piezoelectric element 31 includes a piezoelectric element body 311 and a friction portion 312 connected to the piezoelectric element body 311, the friction portion 312 is in contact with the transmission member 1, the driving chip 32 is arranged on the piezoelectric element body 311, and the piezoelectric element body 311 generates deformation along the first direction A under the voltage applied by the driving chip 32, drives the friction portion 312 to reciprocate along the first direction A, and drives the transmission member 1 to reciprocating rotation movement to drive the lens assembly 2 to move along the optical axis direction.

[0073] In the embodiment, the friction portion 312 is in abutment with the transmission member 1, so as to generate sufficient friction force to drive the transmission member 1 to reciprocating rotation movement. The transmission member 1 can be made of material with flexibility and strength, and its shape and size can be designed as needed, which is not limited herein.

[0074] Optionally, as shown in Figures 3-4 and Figures 6-7As shown, the piezoelectric element 31 further comprises a placing hole 313 arranged on the piezoelectric element body 311, and the driving chip 32 is arranged in the placing hole 313.

[0075] The placing hole 313 can be arranged at the middle of the piezoelectric element body 311, or arranged at one end of the piezoelectric element body 311 away from the friction part 312. In the embodiment, the placing hole 313 is arranged at the middle of the piezoelectric element body 311, so that the voltage applied to the piezoelectric element body 311 by the driving chip 32 is more stable, and the friction force generated by the friction part 312 is enhanced.

[0076] Optionally, as shown in the figure, Figures 3-6 As shown, the camera further comprises a guide assembly 4, the lens assembly 2 is arranged in the transmission member 1, and the transmission member 1 is in transmission connection with the lens assembly 2 through the guide assembly 4. The guide assembly 4 is used to limit the displacement of the lens assembly 2 along the optical axis direction.

[0077] In the embodiment, the guide assembly 4 controls the extension and retraction amount of the lens assembly 2 relative to the transmission member 1 by limiting the displacement of the lens assembly 2 along the optical axis direction, so as to ensure the stability and accuracy of the lens assembly 2 in the extension and retraction movement.

[0078] Optionally, as shown in the figure, Figures 3-6 As shown, the guide assembly 4 comprises a first guide 41 arranged on the lens assembly 2 and a first guide rail 42 arranged on the transmission member 1, and the first guide 41 is movably arranged in the first guide rail 42.

[0079] In the embodiment, when the piezoelectric driving assembly 3 drives the transmission member 1 to rotate, the first guide 41 moves relative to the first guide rail 42 under the action of inertia, thereby driving the lens assembly 2 to move along the optical axis direction, realizing the extension and retraction movement of the lens assembly 2. The first guide rail 42 can limit the displacement of the lens assembly 2 along the optical axis direction, preventing damage to the lens assembly 2 and other components caused by excessive extension and retraction. According to the needs, a plurality of first guides 41 can be arranged on the lens assembly 2, and a plurality of first guide rails 42 can be arranged on the transmission member 1, so as to improve the overall stability.

[0080] Optionally, as shown in the figure, Figures 3-6 As shown, the first guide rail 42 is arranged obliquely on the transmission member 1, and the first guide rail 42 comprises a first end and a second end arranged oppositely. When the first guide 41 is located at the first end, the height of the top end of the lens assembly 2 is lower than the height of the top end of the transmission member 1 along the optical axis direction. When the first guide 41 is located at the second end, the height of the top end of the lens assembly 2 is higher than the height of the top end of the transmission member 1 along the optical axis direction.

[0081] In the embodiment, the first end of the first guide rail 42 is arranged close to the bottom end of the transmission member 1, and the second end of the first guide rail 42 is arranged close to the top end of the transmission member 1. When the camera is working, the piezoelectric driving assembly 3 drives the transmission member 1 to rotate clockwise, and the first guide member 41 moves gradually from the first end to the second end of the first guide rail 42 under the action of inertia, thereby driving the lens assembly 2 to move out along the optical axis. When the first guide member 41 moves to the second end, the height of the top end of the lens assembly 2 is higher than the height of the top end of the transmission member 1, and at this time, the lens assembly 2 is in a fully extended state. When the camera stops working, the piezoelectric driving assembly 3 drives the transmission member 1 to rotate counterclockwise, and the first guide member 41 moves from the second end to the first end of the first guide rail 42 under the action of inertia, thereby driving the lens assembly 2 to move back along the optical axis. When the first guide member 41 moves to the first end, the height of the top end of the lens assembly 2 is lower than the height of the top end of the transmission member 1, and at this time, the lens assembly 2 is in a fully retracted state.

[0082] Optionally, the lens assembly 2 comprises a lens barrel 22 and at least one lens 21, the lens 21 is arranged in the lens barrel 22, the lens barrel 22 is arranged in the transmission member 1, and the first guide member 41 is arranged on opposite sides of the lens barrel 22.

[0083] Optionally, the transmission member 1 comprises a transmission member body 11 and a transmission part 12 arranged at one end of the transmission member body 11, the first guide rail 42 is arranged on opposite sides of the transmission member body 11, and the transmission part 12 is in transmission connection with the piezoelectric driving assembly 3.

[0084] In the embodiment, the roughness and friction coefficient of the surface of the transmission part 12 can be designed and optimized according to actual needs to ensure that the transmission part 12 can be effectively driven by the piezoelectric driving assembly 3.

[0085] Second embodiment

[0086] The camera of the embodiment is basically the same as the camera of the first embodiment, and the difference lies in the guide assembly 4. Figure 8 is a perspective structural schematic diagram of the camera of the second embodiment of the application in an extended state, Figure 9 is Figure 8 is a cross-sectional structural schematic diagram of the camera, as shown in the figure, Figures 8-9 In the embodiment, the guide assembly 4 comprises a guide shaft sleeve 43 and a second guide rail 44 arranged on the transmission member 1, the guide shaft sleeve 43 is arranged between the lens assembly 2 and the transmission member 1 and is movably connected with the second guide rail 44.

[0087] In the embodiment, the guide sleeve 43 is arranged in the transmission member 1, the lens assembly 2 is arranged in the guide sleeve 43 and detachably connected with the guide sleeve 43, and the second guide rail 44 can limit the displacement of the lens assembly 2 along the optical axis direction, so as to prevent damage to the lens assembly 2 and other components caused by excessive stretching and contraction. When the piezoelectric driving assembly 3 drives the transmission member 1 to rotate, the guide sleeve 43 can move relative to the second guide rail 44 under the action of inertia, so as to drive the lens assembly 2 to move along the optical axis direction, and realize the stretching and contraction movement of the lens assembly 2.

[0088] By arranging the guide sleeve 43 and the second guide rail 44, not only the stretching and contraction amount of the lens assembly 2 relative to the transmission member 1 can be controlled, so as to ensure the stability and accuracy of the lens assembly 2 in the stretching and contraction movement, but also the lens assembly 2 can be protected from damage caused by knocking, and the lens assembly 2 is convenient to disassemble, replace and maintain, and the convenience is improved.

[0089] Optionally, as shown in Figures 8-9 The guide sleeve 43 includes a guide sleeve body 431 and a second guide 432 connected with the guide sleeve body 431, the second guide 432 is movably arranged in the second guide rail 44, and the lens assembly 2 is detachably arranged in the guide sleeve body 431.

[0090] In the embodiment, the second guide 432 is arranged on opposite sides of the guide sleeve body 431, and the second guide rail 44 is arranged on opposite sides of the transmission member 1. A plurality of second guides 432 can be arranged on the guide sleeve body 431, and a plurality of second guide rails 44 can be arranged on the transmission member 1, so as to improve the stability of the whole.

[0091] Optionally, as shown in Figure 9 The guide sleeve 43 further includes a support portion 433 arranged at one end of the guide sleeve body 431, and the lens assembly 2 is detachably connected with the support portion 433.

[0092] In the embodiment, the lens assembly 2 includes a lens barrel 22 and at least one lens 21, the lens 21 is arranged in the lens barrel 22, the lens barrel 22 is arranged in the guide sleeve body 431 and detachably connected with the support portion 433, so as to facilitate disassembly, replacement and maintenance of the lens assembly 2, improve the convenience, and avoid damage to the lens barrel 22 and the transmission member 1 caused by knocking.

[0093] The camera of the application not only can control the stretching and contraction amount of the lens assembly 2 relative to the transmission member 1, so as to ensure the stability and accuracy of the lens assembly 2 in the stretching and contraction movement, but also can protect the lens assembly 2, prolong the service life of the lens assembly 2, and facilitate disassembly, replacement and maintenance, and improve the overall convenience.

[0094] The application also relates to a smart terminal including the display device.

[0095] The structure and function of the intelligent terminal are described above, and will not be described again here.

[0096] It can be understood that the above scenarios are only examples and do not constitute a limitation on the application scenarios of the technical solutions provided by the embodiments of the present application. The technical solutions provided by the embodiments of the present application are also applicable to other scenarios. For example, those skilled in the art can know that, as the system architecture evolves and new business scenarios appear, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.

[0097] The sequence numbers of the above embodiments of the present application are only for description, and do not represent the advantages and disadvantages of the embodiments.

[0098] The steps in the method of the embodiments of the present application can be adjusted, combined and reduced in sequence according to actual needs.

[0099] The units in the device of the embodiments of the present application can be combined, divided and reduced according to actual needs.

[0100] In the present application, for the same or similar term concept, technical solution and / or application scenario description, generally only the first time is described in detail, and the repeated description is not repeated for brevity. When understanding the technical solutions and the like of the present application, the same or similar term concept, technical solution and / or application scenario description and the like which are not described in detail can be referred to the related description of the previous.

[0101] In the present application, the description of each embodiment has its own emphasis, and the parts not described or recorded in a certain embodiment can be referred to the related description of other embodiments.

[0102] Each technical feature of the technical solutions of the present application can be combined arbitrarily. In order to make the description simple, each technical feature in the above embodiments is not described in all possible combinations, however, as long as the combination of these technical features does not exist contradictory, it should be considered as the scope recorded in the present application.

[0103] From the above description of the embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment method can be realized by means of software and necessary general hardware platform, of course, it can also be realized by hardware, but in many cases, the former is a better embodiment. Based on such understanding, the technical solutions of the present application can be embodied in the form of a software product, which is stored in a storage medium (such as a ROM / RAM, a magnetic disk, an optical disk) as described above, and includes a plurality of instructions for making a terminal device (which can be a mobile phone, a computer, a server, a controlled terminal, or a network device, etc.) execute the method of each embodiment of the present application.

[0104] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions according to the embodiments of the present application are generated. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions can be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center through wired (for example, coaxial cable, optical fiber, digital subscriber line) or wireless (for example, infrared, wireless, microwave, etc.) mode. The computer readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. integrated with one or more available media. The available media can be magnetic media (for example, floppy disk, storage disk, magnetic tape), optical media (for example, DVD), or semiconductor media (for example, Solid State Disk (SSD)) and the like.

[0105] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the specification and drawings of the present application, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A camera device, characterized in that, The camera device comprises a transmission member (1), a lens assembly (2), and a piezoelectric driving assembly (3), the piezoelectric driving assembly (3) is in transmission connection with the transmission member (1), the transmission member (1) is in transmission connection with the lens assembly (2), and the piezoelectric driving assembly (3) drives the transmission member (1) to rotate to drive the lens assembly (2) to move along the optical axis direction. The piezoelectric driving assembly (3) comprises a piezoelectric member (31) and a driving chip (32), the driving chip (32) is arranged on the piezoelectric member (31) and is in electrical connection with the piezoelectric member (31), the piezoelectric member (31) is arranged on one side of the transmission member (1) along a direction perpendicular to the optical axis, and the piezoelectric member (31) generates deformation along a first direction (A) perpendicular to the optical axis direction under the voltage applied by the driving chip (32) and drives the transmission member (1) to reciprocatingly rotate to drive the lens assembly (2) to move along the optical axis direction.

2. The camera of claim 1, wherein The piezoelectric member (31) comprises a piezoelectric member body (311) and a friction part (312) connected with the piezoelectric member body (311), the friction part (312) is in contact with the transmission member (1), the driving chip (32) is arranged on the piezoelectric member body (311), the piezoelectric member body (311) generates deformation along the first direction (A) under the voltage applied by the driving chip (32), drives the friction part (312) to reciprocatingly move along the first direction (A), and drives the transmission member (1) to reciprocatingly rotate to drive the lens assembly (2) to move along the optical axis direction.

3. The camera of claim 2, wherein, The camera device further comprises a guide assembly (4), the lens assembly (2) is arranged in the transmission member (1), the transmission member (1) is in transmission connection with the lens assembly (2) through the guide assembly (4), and the guide assembly (4) is used for limiting the displacement of the lens assembly (2) along the optical axis direction.

4. The camera of claim 1, wherein The guide assembly (4) comprises a first guide member (41) arranged on the lens assembly (2) and a first guide rail (42) arranged on the transmission member (1), and the first guide member (41) is movably arranged in the first guide rail (42).

5. The camera of claim 4, wherein, The first guide rail (42) is obliquely arranged on the transmission member (1), the first guide rail (42) comprises oppositely arranged first and second ends, when the first guide member (41) is located at the first end, the height of the top end of the lens assembly (2) is lower than the height of the top end of the transmission member (1) along the optical axis direction, and when the first guide member (41) is located at the second end, the height of the top end of the lens assembly (2) is higher than the height of the top end of the transmission member (1) along the optical axis direction.

6. The camera of claim 5, wherein, The lens assembly (2) comprises a lens barrel (22) and at least one lens (21), the lens (21) is arranged in the lens barrel (22), the lens barrel (22) is arranged in the transmission member (1), and the first guide member (41) is arranged on opposite sides of the lens barrel (22).

7. The camera of claim 5, wherein, ​ ​ The transmission member (1) comprises a transmission member body (11) and a transmission part (12) arranged at one end of the transmission member body (11), the first guide rail (42) is arranged at opposite sides of the transmission member body (11), and the transmission part (12) is in transmission connection with the piezoelectric driving assembly (3).

8. The camera of claim 4, wherein, The guide assembly (4) comprises a guide sleeve (43) and a second guide rail (44) arranged on the transmission member (1), the guide sleeve (43) is arranged between the lens assembly (2) and the transmission member (1) and is movably connected with the second guide rail (44).

9. The camera of claim 8, wherein, The guide sleeve (43) comprises a guide sleeve body (431) and a second guide member (432) connected with the guide sleeve body (431), the second guide member (432) is movably arranged in the second guide rail (44), and the lens assembly (2) is detachably arranged in the guide sleeve body (431).

10. A smart terminal, characterized by The camera comprises the camera device according to any one of claims 1 to 9.

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