Camera module and electronic equipment

Abstract

The invention relates to a camera module and electronic equipment. The camera module comprises an optical conduction element, a piezoelectric focusing element and an image sensor. The optical conduction element is provided with a light-in area and a light-out area, the light-in area and the light-out area face the same side, and the optical conduction element is configured to be capable of conducting at least part of light rays incident from the light-in area to the light-out area to be emitted out. The piezoelectric focusing element is arranged opposite to the light incident area, the piezoelectric focusing element is provided with a piezoelectric film, and the piezoelectric film is configured to be capable of deforming along with the change of voltage so as to change the focal length of the piezoelectric focusing element. And the image sensor is arranged opposite to the light emitting area. According to the camera module, the occupied space of the camera module can be compressed while the optical focusing function is realized, so that the structural layout of the electronic equipment is facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of camera devices, and in particular to a camera module and electronic equipment. Background Art

[0002] With the rapid development of electronic devices such as smart phones, tablet computers, and e-readers, the camera modules in electronic devices also tend to be diversified in design to meet different shooting needs. Some electronic devices are equipped with periscope camera modules to obtain higher optical magnification shooting effects, and are equipped with voice coil motor components to achieve optical focus functions to adapt to objects at different object distances. However, in the related art, the camera module with optical focus function occupies a large space, which is not conducive to the structural layout of the electronic device. Summary of the invention

[0003] The embodiments of the present application provide a camera module and an electronic device to solve the problem that a camera module with an optical focus function occupies a large space.

[0004] A camera module, comprising:

[0005] An optical transmission element, provided with a light entrance area and a light exit area, the light entrance area and the light exit area face the same side, and the optical transmission element is configured to be able to transmit at least part of the light incident from the light entrance area to the light exit area for emission;

[0006] A piezoelectric focusing element is arranged opposite to the light incident area, the piezoelectric focusing element has a piezoelectric film, and the piezoelectric film is configured to be deformed with a change in voltage to change the focal length of the piezoelectric focusing element; and,

[0007] The image sensor is arranged opposite to the light emitting area.

[0008] In the above-mentioned camera module, the light entrance area and the light exit area face the same side, that is, the optical transmission element can deflect the light path by 180°, so that the piezoelectric focusing element and the image sensor can be arranged on the same side of the optical transmission element, and the extension directions of the piezoelectric focusing element, the image sensor, the light entrance area and the light exit area are all roughly perpendicular to the light entrance direction of the camera module. Therefore, when it is necessary to increase the size of the image sensor to improve the imaging quality of the camera module, or to increase the size of the piezoelectric focusing element, the image sensor, the light entrance area and the light exit area to increase the aperture of the camera module, it is only necessary to increase the size of the camera module perpendicular to the light entrance direction, without causing the size of the camera module in the light entrance direction to increase, which is conducive to compressing the size of the electronic device corresponding to the camera module in the thickness direction, thereby facilitating the structural layout of the camera module in the electronic device. In addition, by setting a piezoelectric focusing element to achieve the optical focusing function, there is no need to set a voice coil motor or other driving element to move the lens group or prism to achieve focusing, and there is no need to reserve a focusing movement stroke for the lens group in the direction of incident light. This is conducive to simplifying the structural design of optical transmission elements, compressing the space occupied by the camera module, and is conducive to the structural layout of the camera module in electronic equipment. It is also conducive to reducing the magnetic interference of the voice coil motor or the influence of the focusing posture difference of the voice coil motor on the focusing accuracy, thereby improving the focusing accuracy and imaging quality of the camera module.

[0009] An electronic device comprises a housing and a camera module as described above, wherein the camera module is arranged in the housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0011] Figure 1 Schematic diagram of the structure of electronic equipment in some embodiments.

[0012] Figure 2 Schematic diagram of the structure of the camera module in some embodiments.

[0013] Figure 3 Schematic diagram of the structure of the camera module in some other embodiments.

[0014] Figure 4 It is a schematic diagram of the structure of the electronic device including other components in some embodiments.

[0015] Reference numerals:

[0016] 10. Electronic device; 11. Shell; 111. Light inlet; 12. Camera module; 121. Optical transmission element; 1211. First reflection surface; 1212. Second reflection surface; 1213. Light transmission surface; 1214. Light entrance area; 1215. Light exit area; 1216. First prism; 1217. Second prism; 1218. Light blocking element; 122. Image taking lens group; 1221. Lens; 1222. Piezoelectric focusing element; 1223. Piezoelectric film; 1224. Deformation structure; 123. Image sensor; 124. First anti-shake driving element; 125. Second anti-shake driving element; 126. Filter. DETAILED DESCRIPTION

[0017] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0018] As used herein, "electronic device" refers to a device that can receive and / or send communication signals, including but not limited to a device that is connected via any one or more of the following connection methods:

[0019] (1) Connection via wired lines, such as Public Switched Telephone Networks (PSTN), Digital Subscriber Line (DSL), digital cable, and direct cable connection;

[0020] (2) Via wireless interfaces, such as cellular networks, wireless local area networks (WLAN), digital television networks such as DVB-H networks, satellite networks, and AM-FM broadcast transmitters.

[0021] An electronic device configured to communicate via a wireless interface may be referred to as a "mobile terminal". Examples of mobile terminals include, but are not limited to, the following electronic devices:

[0022] (1) Satellite phone or cellular phone;

[0023] (2) Personal Communications System (PCS) terminals that can combine cellular radio telephones with data processing, fax, and data communications capabilities;

[0024] (3) Radiotelephone, pager, Internet / intranet access, Web browser, notepad, calendar, Personal Digital Assistant (PDA) equipped with a Global Positioning System (GPS) receiver;

[0025] (4) conventional laptop and / or palmtop receivers;

[0026] (5) Conventional laptop and / or palmtop radio telephone transceivers, etc.

[0027] In the related art, electronic devices equipped with periscope camera modules usually have image sensors and lenses extending in a direction parallel to the thickness of the electronic device. When it is necessary to increase the size of the image sensor to improve the resolution of the shooting module, or to increase the size of components such as lenses and prisms to increase the aperture of the shooting module, thereby improving the imaging quality of the shooting module, it usually causes the size of the camera module to increase in the thickness direction of the electronic device. In addition, in the related art, a driving component such as a voice coil motor is usually used to drive the lens or prism to move in the thickness direction of the electronic device to achieve an optical zoom function, so that the camera module needs to reserve sufficient movement travel for the lens or prism in the thickness direction of the electronic device, which also causes the size of the camera module to increase in the thickness direction of the electronic device, which is not conducive to the structural layout of the electronic device.

[0028] In order to solve the above problems, the present application provides a camera module and an electronic device.

[0029] See also Figure 1 and Figure 2 , Figure 1 is a schematic diagram of the structure of the electronic device 10 in some embodiments, Figure 2 1 is a schematic diagram of the structure of the camera module 12 in some embodiments. The electronic device 10 provided in the present application includes but is not limited to any applicable electronic device such as a smart phone, a tablet computer, an e-reader, etc., and the electronic device 10 is provided with a camera module 12 to realize the shooting function. The electronic device 10 may include a housing 11 for accommodating the camera module 12, and the housing 11 is provided with a light inlet 111. The camera module 12 can receive at least part of the light incident into the light inlet 111 to obtain an image of the subject.

[0030] In some embodiments, the camera module 12 includes an optical transmission element 121, an imaging lens group 122, and an image sensor 123. The optical transmission element 121 is provided with a light input area 1214 and a light output area 1215, and the light input area 1214 and the light output area 1215 face the same side. The optical transmission element 121 is configured to transmit at least part of the light incident from the light input area 1214 to the light output area 1215 for emission. In other words, the optical transmission element 121 is capable of deflecting the light path by 180 degrees. The imaging lens group 122 includes at least one lens 1221 with optical power. The imaging lens group 122 is disposed on one side of the light input area 1214 of the optical transmission element 121. The light input side of the imaging lens group 122 is disposed corresponding to the light inlet hole 111, and the light output side is opposite to the light input area 1214. The imaging lens group 122 can adjust at least part of the light incident from the light inlet hole 111 and emit it to the light inlet area 1214, so as to improve the imaging quality of the camera module 12. The image sensor 123 and the imaging lens group 122 are arranged on the same side of the optical transmission element 121, and the image sensor 123 is arranged opposite to the light exit area 1215. At least part of the light incident from the light inlet hole 111 to the camera module 12 is deflected 180° by the optical transmission element 121 after passing through the imaging lens group 122, and is emitted from the light exit area 1215 to the image sensor 123. The image sensor 123 includes but is not limited to a charge coupled device (CCD) or a complementary metal oxide semiconductor device (CMOS Sensor).

[0031] Furthermore, in some embodiments, the imaging lens group 122 includes a piezoelectric focusing element 1222 , and the piezoelectric focusing element 1222 has a piezoelectric film 1223 , and the piezoelectric film 1223 is configured to be able to deform with changes in voltage to change the focal length of the piezoelectric focusing element 1222 , thereby realizing the optical focusing function of the camera module 12 .

[0032] It should be noted that, in some embodiments, the electronic device 10 may be roughly in the shape of a rectangular parallelepiped, and the axis of the imaging lens group 122 may be roughly parallel to the thickness direction of the electronic device 10. Then, the light incident direction of the camera module 12 is roughly parallel to the thickness direction of the electronic device 10, and the lens 1221, the piezoelectric focusing element 1222 and the photosensitive surface of the image sensor 123 in the zoom lens group are also roughly perpendicular to the thickness direction of the electronic device 10.

[0033] In the above-mentioned camera module 12, the optical transmission element 121 can deflect the optical path by 180°, so that the piezoelectric focusing element 1222 and the image sensor 123 can be arranged on the same side of the optical transmission element 121, and further, the extending directions of the imaging lens group 122, the image sensor 123, the light-incoming area 1214 and the light-outgoing area 1215 are all substantially perpendicular to the light-incoming direction of the camera module 12. Therefore, when it is necessary to increase the size of the image sensor 123 to improve the imaging quality of the camera module 12, or to increase the size of the imaging lens group 122, the image sensor 123, the light-incoming area 1214 and the light-outgoing area 1215 to increase the aperture of the camera module 12, it is only necessary to increase the size of the camera module 12 in the direction perpendicular to the light-incoming direction, without causing the size of the camera module 12 in the direction of the light-incoming direction to increase, which is conducive to compressing the size of the camera module 12 in the thickness direction of the electronic device 10, thereby facilitating the structural layout of the camera module 12 in the electronic device 10.

[0034] In addition, by providing a piezoelectric focusing element 1222 in the imaging lens group 122 to realize the optical focusing function, there is no need to provide a voice coil motor or other driving element to move the lens group or prism to realize focusing, and there is no need to reserve a focusing moving stroke for the lens group in the direction of incident light. This is beneficial to simplifying the structural design of the optical transmission element 121, compressing the space occupied by the camera module 12 in the thickness direction of the electronic device 10, which is beneficial to the structural layout of the camera module 12 in the electronic device 10, and is also beneficial to reducing the magnetic interference of the voice coil motor or the influence of the focusing posture difference of the voice coil motor on the focusing accuracy, thereby improving the focusing accuracy and imaging quality of the camera module 12.

[0035] Furthermore, through the reasonable design of the light deflection direction of the optical transmission element 121, the imaging lens group 122 and the image sensor 123 are located on the same side of the optical transmission element 121, and the imaging lens group 122 and the image sensor 123 partially overlap in the thickness direction of the electronic device 10, which is also conducive to compressing the size of the camera module 12 in the thickness direction of the electronic device 10, and is conducive to the spatial layout of the electronic device 10. In addition, the light-entering side of the imaging lens group 122 is arranged corresponding to the light-inlet hole 111, so that the light-inlet hole 111 can be arranged in a circular shape to adapt to the shape of the imaging lens group 122. Compared with the related art in which the light-inlet hole corresponds to the light-entering side of the prism, resulting in the light-inlet hole being arranged in a square shape to adapt to the shape of the prism, the circular shape of the light-inlet hole 111 can be better matched with other circular holes of the electronic device 10, thereby improving the aesthetics of the electronic device 10.

[0036] The specific setting of the piezoelectric focusing element 1222 is not limited, as long as the focal length of the piezoelectric focusing element 1222 can change with the change of the voltage applied to the piezoelectric focusing element 1222 to realize the optical focusing function of the camera module 12. In some embodiments, the piezoelectric focusing element 1222 may also include a deformation structure 1224, which can play a major role in adjusting light in the piezoelectric focusing element 1222, such as converging or diverging light. The focal length of the piezoelectric focusing element 1222 mainly depends on the shape of the deformation structure 1224. The piezoelectric film 1223 is connected to the deformation structure 1224. When the piezoelectric film 1223 is deformed, it can drive the deformation structure 1224 to deform, thereby changing the focal length of the piezoelectric focusing element 1222.

[0037] The piezoelectric film 1223 may include one or more piezoelectric film structures, and the material of the piezoelectric film 1223 includes but is not limited to piezoelectric materials such as polyvinylidene difluoride (PVDF). In some embodiments, the piezoelectric focusing element 1222 may be a liquid piezoelectric lens 1221, and the deformation structure 1224 may include a deformation liquid, and the deformation liquid includes but is not limited to liquid crystal materials, silicone oils, alcohol solutions or water. In other embodiments, the piezoelectric focusing element 1222 may also be a solid piezoelectric lens, and the material of the deformation structure 1224 includes but is not limited to one or more polymer resins such as alkyd resins, amino resins, nitro resins, cellulose, perchlorethylene resins, vinyl resins, acrylic resins, polyester resins, epoxy resins, polyurethane resins, silicone resins, rubber resins, etc.

[0038] It can be understood that, in addition to the piezoelectric focusing element 1222, the imaging lens group 122 is also provided with at least one lens 1221 with optical power, and the lens 1221 and the piezoelectric focusing element 1222 are coaxially arranged to jointly play the role of adjusting light. When the deformable structure 1224 is deformed and has optical power under the drive of the piezoelectric film 1223, the deformable structure 1224 and the other lenses 1221 of the viewfinder group jointly play the role of adjusting light to improve the imaging quality of the camera module 12.

[0039] refer to Figure 2As shown, in some embodiments, the camera module 12 further includes a first anti-shake driving element 124, and the first anti-shake driving element 124 is connected to a structural member of the imaging lens group 122, for example, connected to a lens barrel accommodating the imaging lens group 122. The first anti-shake driving element 124 includes but is not limited to any applicable optical anti-shake motor such as a voice coil motor, and the first anti-shake driving element 124 is configured to drive the imaging lens group 122 to move, for example, drive the imaging lens group 122 to deflect relative to the optical axis to achieve an optical anti-shake function. The first anti-shake driving element 124 is set to drive the imaging lens group 122 to move to achieve the optical anti-shake function. Compared with the related art that realizes the optical anti-shake function by driving the prism to shake, the first anti-shake driving element 124 has a smaller load, which is also conducive to simplifying the structural design of the optical transmission element 121 and compressing the space occupied by the first anti-shake driving element 124 and the optical transmission element 121.

[0040] Combination Figure 1 and Figure 3 As shown, in some embodiments, the camera module 12 further includes a second anti-shake driving element 125, which is configured to drive the image sensor 123 to move, for example, to drive the image sensor 123 to deflect relative to the axis to achieve an optical anti-shake function. The second anti-shake driving element 125 is configured to drive the image sensor 123 to move to achieve the optical anti-shake function. Compared with the related art in which the optical anti-shake function is achieved by driving the prism to shake, the load of the second anti-shake driving element 125 is smaller, which is conducive to compressing the space occupied by the second anti-shake driving element 125 and the optical transmission element 121, thereby compressing the space occupied by the camera module 12.

[0041] It should be noted that only one of the first anti-shake driving element 124 and the second anti-shake driving element 125 can be provided, and the optical anti-shake function is realized by driving one of the imaging lens group 122 and the image sensor 123 to move, which is conducive to further compressing the occupied space of the camera module 12. When the camera module 12 is only provided with the second anti-shake driving element 125, it is also possible to reduce the magnetic interference of the second anti-shake driving element 125 on the focusing process of the imaging lens group 122 or the influence of the posture difference of the second anti-shake driving element 125 on the focusing accuracy of the imaging lens group 122, thereby improving the focus start and imaging quality of the camera module 12.

[0042] In some embodiments, the camera module 12 further includes a filter 126, which is disposed between the light emitting area 1215 and the image sensor 123. The filter 126 can filter out infrared light or other interfering light to prevent the interfering light from reaching the image sensor 123 and affecting normal imaging. The filter 126 can be an infrared cut-off filter 126, for example, it can be a blue glass provided with an infrared cut-off filter film. In some embodiments, when the camera module 12 is provided with a second anti-shake driving element 125 to drive the image sensor 123 to move, the filter 126 can be fixed relative to the image sensor 123, and the second anti-shake driving element 125 can drive the image sensor 123 to move synchronously with the filter 126. For example, the image sensor 123 and the filter 126 are fixed on the same structural member, and the second anti-shake driving element 125 is used to drive the structural member carrying the image sensor 123 and the filter 126 to move. With such a configuration, when the image sensor 123 is driven to move to realize the optical image stabilization function, the filter 126 can move synchronously with the image sensor 123, so that the incident angle of the light passing through the filter 126 on the image sensor 123 is always adapted to the image sensor 123, thereby preventing the situation in which the incident angle of the light is too large to be received by the image sensor 123 due to the relative tilt of the filter 126 and the image sensor 123, which is beneficial to maintaining good imaging quality of the camera module 12 during the image stabilization process.

[0043] The specific configuration of the optical transmission element 121 is not limited, as long as it can deflect the light collected by the imaging lens group 122 by 180° and project it onto the image sensor 123. The optical transmission element 121 includes but is not limited to a plastic prism or a glass prism. In some embodiments, the optical transmission element 121 has a first reflection surface 1211, a second reflection surface 1212, and a light transmission surface 1213. The light entry area 1214 and the light exit area 1215 are both formed on the light transmission surface 1213. In other words, different areas of the light transmission surface 1213 are respectively opposite to the imaging lens group 122 and the image sensor 123. The light entry area 1214 and the light exit area 1215 are coplanar, which is conducive to simplifying the structural design of the optical transmission element 121 and improving the structural accuracy of the optical transmission element 121. The first reflection surface 1211 is inclined to the light transmission surface 1213 and is arranged corresponding to the light entry area 1214. The second reflection surface 1212 is inclined to the light transmission surface 1213 and is arranged corresponding to the light exit area 1215. At least part of the light from the imaging lens group 122 enters the optical conductive element 121 from the light incident area 1214 and is incident on the first reflective surface 1211. The first reflective surface 1211 can reflect at least part of the light incident on the first reflective surface 1211 to the light-transmitting surface 1213. The light-transmitting surface 1213 can reflect at least part of the light reflected from the first reflective surface 1211 to the light-transmitting surface 1213 to the second reflective surface 1212. The second reflective surface 1212 can reflect at least part of the light reflected from the light-transmitting surface 1213 to the second reflective surface 1212 to the light-exiting area 1215, so that at least part of the light is emitted from the optical conductive element 121 from the light-exiting area 1215 and is incident on the image sensor 123. With reference to the above description, the light-transmitting surface 1213 can be substantially perpendicular to the axis of the imaging lens group 122 and the image sensor 123. The optical transmission element 121 is arranged to reflect at least part of the light three times, which can extend the propagation path of the light, so that the optical transmission element 121 is suitable for the telephoto design of the imaging lens group 122. Through the periscope design, the size of the camera module 12 in the thickness direction of the electronic device 10 is compressed while matching the imaging lens group 122 with a telephoto design. The optical transmission element 121 provided in the present application is suitable for the imaging lens group 122 with a magnification of 2 times to 4 times (equivalent focal length is approximately 40 mm to 90 mm).

[0044] In some embodiments, the angles between the first reflective surface 1211 and the second reflective surface 1212 and the light-transmitting surface 1213 are all greater than or equal to 25° and less than or equal to 35°, for example, 32.5°. This arrangement can improve the efficiency and accuracy of light reflection by the first reflective surface 1211, the second reflective surface 1212, and the light-transmitting surface 1213, so that the optical transmission element 121 can smoothly deflect the light path by 180°.

[0045] In some embodiments, the optical transmission element 121 may be a prism structure. Figure 3 and Figure 4 As shown, in other embodiments, the optical transmission element 121 includes a split first prism 1216 and a second prism 1217, the light entrance area 1214 and the first reflection surface 1211 are provided on the first prism 1216, the light exit area 1215 and the second reflection surface 1212 are provided on the second prism 1217, and the first prism 1216 and the second prism 1217 can be glued together by optical glue. After at least part of the light is reflected by the first reflection surface 1211 to the light transmission surface 1213, it can be reflected by the light transmission surface 1213 and emitted from the first prism 1216 and emitted into the second prism 1217, and then reflected by the second reflection surface 1212. Further, in some embodiments, a light blocking element 1218 is further provided at the junction of the first prism 1216 and the second prism 1217, and the material of the light blocking element 1218 includes but is not limited to any applicable light absorbing material such as ink. The light blocking element 1218 may be hollow to define the light aperture of the optical transmission element 121. It is understandable that at least part of the light emitted from the first prism 1216 to the second prism 1217 and corresponding to the light aperture range of the optical transmission element 121 can pass through the light blocking element 1218, while at least part of the light corresponding to the non-light aperture will be absorbed by the light blocking element 1218, which is beneficial to reduce the stray light, interference light and other components of the camera module 12, and improve the imaging quality of the camera module 12.

[0046] refer to Figure 4 , Figure 4 The electronic device 10 is a schematic diagram of the structure of the electronic device 10 provided in the embodiment of the present application. The electronic device 10 may include a radio frequency (RF) circuit 501, a memory 502 including one or more computer-readable storage media, an input unit 503, a display unit 504, a sensor 505, an audio circuit 506, a wireless fidelity (WiFi) module 507, a processor 508 including one or more processing cores, and a power supply 509. Those skilled in the art will understand that Figure 4 The structure of the electronic device 10 shown in the figure does not constitute a limitation on the electronic device 10, and the electronic device 10 may include more or less components than those shown in the figure, or combine certain components, or arrange the components differently.

[0047] The radio frequency circuit 501 can be used to send and receive information, or receive and send signals during a call. In particular, after receiving the downlink information of the base station, it is handed over to one or more processors 508 for processing; in addition, the data related to the uplink is sent to the base station. Usually, the 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, etc. In addition, the radio frequency circuit 501 can also 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 communications (GSM), the general packet radio service (GPRS), the code division multiple access (CDMA), the wideband code division multiple access (WCDMA), the long term evolution (LTE), email, the short message service (SMS), etc.

[0048] The memory 502 can be used to store applications and data. The applications stored in the memory 502 contain executable codes. The applications can be composed of various functional modules. The processor 508 executes various functional applications and data processing by running the applications stored in the memory 502. The memory 502 can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area can store data created according to the use of the electronic device 10 (such as audio data, a phone book, etc.), etc. In addition, the memory 502 can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices. Accordingly, the memory 502 can also include a memory controller to provide the processor 508 and the input unit 503 with access to the memory 502.

[0049] The input unit 503 can be used to receive input digital, character information or user feature information (such as fingerprints), and generate keyboard, mouse, joystick, optical or trackball signal input related to user settings and function control. Specifically, in a specific embodiment, the input unit 503 may include a touch-sensitive surface and other input devices. The touch-sensitive surface, also known as a touch display screen or a touch pad, can collect user touch operations on or near it (such as operations performed by users using fingers, styluses, or any other suitable objects or accessories on or near the touch-sensitive surface), and drive corresponding connection devices according to a pre-set program. Optionally, the touch-sensitive surface may include a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch orientation, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into touch point coordinates, and then sends it to the processor 508, and can receive and execute commands sent by the processor 508.

[0050] The display unit 504 can be used to display information input by the user or information provided to the user and various graphical user interfaces of the electronic device 10, which can be composed of graphics, text, icons, videos and any combination thereof. The display unit 504 may include a display panel. Optionally, the display panel can be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like. Furthermore, the touch-sensitive surface may cover the display panel, and when the touch-sensitive surface detects a touch operation on or near it, it 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 Figure 4 In the embodiment, the touch sensitive surface and the display panel are used as two independent components to implement input and output functions, but in some embodiments, the touch sensitive surface and the display panel can be integrated to implement input and output functions. It can be understood that the display screen 110 can include an input unit 503 and a display unit 504.

[0051] The electronic device 10 may also include at least one sensor 505, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor 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 backlight when the electronic device 10 is moved to the ear. As a type of motion sensor, the gravity acceleration sensor can detect the magnitude of acceleration in each direction (generally three axes), and can detect the magnitude and direction of gravity when stationary. It can be used for applications that identify 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, tapping), etc.; as for other sensors that the electronic device 10 can also be configured with, such as gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., they will not be repeated here.

[0052] The audio circuit 506 can provide an audio interface between the user and the electronic device 10 through a speaker and a microphone. The audio circuit 506 can convert the received audio data into an electrical signal, transmit it to the speaker, and convert it into a sound signal for 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, and then the audio data is output to the processor 508 for processing, and then sent to another electronic device 10 through the radio frequency circuit 501, or the audio data is output to the memory 502 for further processing. The audio circuit 506 may also include an earphone socket to provide communication between an external earphone and the electronic device 10.

[0053] Wireless Fidelity (WiFi) is a short-range wireless transmission technology. The electronic device 10 can help users send and receive emails, browse web pages, and access streaming media through the wireless fidelity module 507, which provides users with wireless broadband Internet access. Figure 4 The wireless fidelity module 507 is shown, but it is understandable that it is not a necessary component of the electronic device 10 and can be omitted as needed without changing the essence of the invention.

[0054] The processor 508 is the control center of the electronic device 10. It uses various interfaces and lines to connect various parts of the entire electronic device 10. By running or executing applications stored in the memory 502 and calling data stored in the memory 502, it executes various functions of the electronic device 10 and processes data, thereby monitoring the electronic device 10 as a whole. Optionally, the processor 508 may include one or more processing cores; preferably, the processor 508 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and application programs, and the modem processor mainly processes wireless communications. It is understandable that the above-mentioned modem processor may not be integrated into the processor 508.

[0055] The electronic device 10 also includes a power supply 509 for supplying power to various components. Preferably, the power supply 509 can be logically connected to the processor 508 through a power management system, so that the power management system can manage charging, discharging, and power consumption. The power supply 509 can also include one or more DC or AC power supplies, recharging systems, power failure detection circuits, power converters or inverters, power status indicators, and other arbitrary components.

[0056] although Figure 4 Not shown, the electronic device 10 may also include a Bluetooth module, etc., which will not be described in detail here. In specific implementation, the above modules can be implemented as independent entities, or can be arbitrarily combined and implemented as the same or several entities. The specific implementation of the above modules can refer to the previous method embodiment, which will not be described in detail here.

[0057] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A camera module, characterized in that: include: An optical transmission element, provided with a light entrance area and a light exit area, the light entrance area and the light exit area face the same side, and the optical transmission element is configured to be able to transmit at least part of the light incident from the light entrance area to the light exit area for emission; A piezoelectric focusing element is arranged opposite to the light incident area, the piezoelectric focusing element has a piezoelectric film, and the piezoelectric film is configured to be deformed with a change in voltage to change the focal length of the piezoelectric focusing element; and, The image sensor is arranged opposite to the light emitting area.

2. The camera module according to claim 1, characterized in that: The camera module also includes a lens with optical focal length, which is arranged opposite to the light incident area and coaxially arranged with the optical transmission element.

3. The camera module according to claim 2, characterized in that: The camera module also includes a first anti-shake driving element, which is configured to drive the piezoelectric focusing element and the lens to move synchronously to achieve an optical anti-shake function.

4. The camera module according to claim 1, characterized in that: The camera module also includes a second anti-shake driving element, which is configured to drive the image sensor to move to achieve an optical anti-shake function.

5. The camera module according to claim 4, characterized in that: The camera module also includes a filter, which is arranged between the light exit area and the image sensor. The filter is relatively fixed to the image sensor, and the second anti-shake driving element can drive the image sensor and the filter to move synchronously.

6. The camera module according to claim 1, characterized in that: The light incident area and the light exit area are coplanar.

7. The camera module according to claim 6, characterized in that: The optical transmission element has a light-transmitting surface, a first reflecting surface and a second reflecting surface. The light incident area and the light emitting area are arranged on the light-transmitting surface. The first reflecting surface is arranged corresponding to the light incident area, and the second reflecting surface is arranged corresponding to the light emitting area.

8. The camera module according to claim 7, characterized in that: The included angle between the first reflective surface and the light-transmitting surface, and the included angle between the second reflective surface and the light-transmitting surface are 25°-35°.

9. The camera module according to claim 1, characterized in that: The optical transmission element includes a first prism and a second prism. The light entrance area and the first reflection surface are arranged on the first prism, and the light exit area and the second reflection surface are arranged on the second prism. A light blocking element is arranged at the junction of the first prism and the second prism to define the light aperture of the optical transmission element.

10. The camera module according to claim 1, characterized in that: The piezoelectric focusing element further includes a deformation structure, the piezoelectric film is connected to the deformation structure, and the piezoelectric film can drive the deformation structure to deform when deformed so as to change the focal length of the deformation structure.

11. An electronic device, characterized in that: It comprises a shell and a camera module as described in any one of claims 1 to 10, wherein the camera module is arranged in the shell.

12. The electronic device according to claim 11, characterized in that: The housing is provided with a light inlet hole, and the piezoelectric focusing element is arranged corresponding to the light inlet hole.

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