Camera module and electronic equipment

Abstract

The invention relates to a camera module and electronic equipment. The camera module comprises a lens, an image sensor and a focusing assembly. The focusing assembly comprises a conduction element and a driving element, the lens and the image sensor are arranged on the same side of the conduction element, and the conduction element is used for conducting light from the lens to the image sensor. And the driving element is configured to be capable of driving the conduction element to move along the optical axis direction of the lens. According to the camera module, the size of the camera module in the optical axis direction of the lens can be compressed, and the application range of the camera module can be expanded.

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 smartphones, tablets, and e-readers, lens 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. Some periscope cameras are equipped with motors to achieve mobile focus functions to adapt to objects at different object distances. However, the design of the focus function of the periscope camera module in the related art easily leads to an increase in the size of the module, which is not conducive to the structural design 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 the design of the focus function of a periscope camera module easily leads to an increase in the size of the module.

[0004] A camera module, comprising:

[0005] Lens;

[0006] an image sensor; and,

[0007] The focusing assembly comprises a conducting element and a driving element, wherein the lens and the image sensor are arranged on the same side of the conducting element, the conducting element is used to conduct light from the lens to the image sensor, and the driving element is configured to drive the conducting element to move along the optical axis direction of the lens.

[0008] An electronic device comprises a housing and a camera module as described above, wherein the camera module is arranged in the housing.

[0009] The camera module described above realizes the optical focus function by driving the conductive element to move along the optical axis direction of the lens through the driving element, replacing the traditional method of realizing optical focus by moving the lens. Since the lens and the image sensor are arranged on the same side of the conductive element, when the driving element drives the conductive element to move relative to the lens, the conductive element will also move relative to the image sensor at the same time. In other words, when the conductive element moves relative to the lens, the change in the back focal length of the lens is twice the displacement of the conductive element relative to the lens. As a result, the conductive element can achieve a greater focal length change effect with a smaller displacement, thereby increasing the focal length change range of the camera module while reducing the movement range of the conductive element, which is beneficial to compressing the size of the camera module in the optical axis direction of the lens and also beneficial to improving the application range of the camera module. 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 Schematic diagram of the structure of the camera module in some other embodiments.

[0015] Figure 5 Schematic diagram of the optical path of the camera module in some embodiments.

[0016] Figure 6 Schematic diagram of the installation structure of the camera module in some embodiments.

[0017] Figure 7 for Figure 6 A schematic diagram showing a camera module with its conductive element located in another position.

[0018] Figure 8 Schematic diagram of the structure of the camera module in some further embodiments.

[0019] Fig. 9 for Figure 8 A schematic diagram showing a camera module with its conductive element located at another position.

[0020] Fig.10 Schematic diagram of the structure in which the driving element includes a coil and a magnet in some embodiments.

[0021] Fig.11 Schematic diagram of the structure of other components of the electronic device in some embodiments.

[0022] Reference numerals:

[0023] 10. Electronic device; 11. Shell; 111. Light inlet; 12. Camera module; 121. Lens; 1211. First lens group; 1212. Second lens group; 1213. Lens; 122. Image sensor; 123. Transmitting element; 1231. First reflecting surface; 1232. Second reflecting surface; 1233. Light-transmitting surface; 1234. Light-entering area; 1235. Light-exiting area; 1236. Bottom surface; 124. Anti-reflection film layer; 125. Driving element; 126. Infrared filter. DETAILED DESCRIPTION

[0024] 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.

[0025] 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:

[0026] (1) Connection via wired lines, such as Public Switched Telephone Networks (PSTN), Digital Subscriber Line (DSL), digital cable, and direct cable connection;

[0027] (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.

[0028] 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:

[0029] (1) Satellite phone or cellular phone;

[0030] (2) Personal Communications System (PCS) terminals that can combine cellular radio telephones with data processing, fax, and data communications capabilities;

[0031] (3) Radiotelephone, pager, Internet / intranet access, Web browser, notepad, calendar, Personal Digital Assistant (PDA) equipped with a Global Positioning System (GPS) receiver;

[0032] (4) conventional laptop and / or palmtop receivers;

[0033] (5) Conventional laptop and / or palmtop radio telephone transceivers, etc.

[0034] 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 Schematic diagram of the structure of the camera module 12 in some embodiments. The electronic device 10 provided in this application includes but is not limited to a smart phone, a tablet computer, an e-reader, a wearable device and the like. The electronic device 10 in the embodiments of this application is exemplified by taking a smart phone as an example.

[0035] In some embodiments, the electronic device 10 includes a housing 11 and a camera module 12, the camera module 12 is arranged in the housing 11, and the electronic device 10 is provided with the camera module 12 to realize the camera function. The camera module 12 can be designed as a periscope structure to compress the size of the camera module 12 in the thickness direction of the electronic device 10, so as to optimize the structural layout of the electronic device 10 and compress the thickness size of the electronic device 10. The assembly relationship between the housing 11 and the camera module 12 is not limited, and can be specifically designed according to the structural layout of the electronic device 10. For example, in some embodiments, the housing 11 includes a middle frame, a front cover plate and a rear cover plate, the middle frame can be roughly in the shape of a rectangular frame, the front cover plate and the rear cover plate can be respectively arranged on both sides of the middle frame to form a housing space together with the middle frame, and the camera module 12 can be accommodated in the housing space of the housing 11. In the present application, the direction from the front cover plate of the housing 11 to the rear cover plate can be regarded as the thickness direction of the electronic device 10.

[0036] In some embodiments, the camera module 12 includes a lens 121, an image sensor 122, and a conductive element 123. The lens 121 is used to collect light. The lens 121 may include multiple lenses 1213 with optical focal length. The cooperation of the multiple lenses 1213 can correct aberrations while collecting light, thereby improving the imaging quality of the camera module 12. The image sensor 122 includes but is not limited to a charge coupled device (CCD) or a complementary metal oxide semiconductor device (CMOS Sensor). The conductive element 123 is used to transmit the light from the lens 121 to the image sensor 122 for imaging, so that the electronic device 10 can realize the image acquisition function. In some embodiments, a light inlet 111 that penetrates the shell is opened on the shell 11. When the camera module 12 is accommodated in the shell 11, the light entrance side of the lens 121 corresponds to the light inlet 111, so as to collect light. The optical axis direction of the lens 121 can be roughly parallel to the thickness direction of the electronic device 10 . The conductive element 123 is arranged to deflect the light path while transmitting the light, which is beneficial to compressing the size of the camera module 12 in the thickness direction of the electronic device 10 .

[0037] The lens 121 may include a plurality of lenses 1213 with optical focal lengths, and the number and type of the lenses 1213 of the lens 121 are not limited. In some embodiments, the lens 121 includes four lenses 1213 spaced apart from each other in sequence along the optical axis. The first lens 1213 of the lens 121, i.e., the lens 1213 closest to the light inlet 111, may be made of glass and processed by grinding, mainly for correcting aberrations and eliminating temperature drift. The other three lenses 1213 of the lens 121 may be made of plastic and processed by injection molding, mainly for correcting aberrations. It should be understood that this embodiment only exemplarily lists the materials and processing methods of the above-mentioned lenses 1213, but is not limited thereto. Those skilled in the art may flexibly select according to actual needs.

[0038] Further, in some embodiments, the lens 121 and the image sensor 122 are arranged on the same side of the conductive element 123. The camera module 12 also includes a driving element 125, which together with the conductive element 123 constitutes a focusing assembly, and the driving element 125 is configured to drive the conductive element 123 to move relative to the lens 121 along the optical axis direction of the lens 121, and the driving element 125 includes but is not limited to any applicable focusing power element such as a voice coil motor. It can be understood that when the camera device is accommodated in the housing 11, the lens 121 and the image sensor 122 can be fixed relative to the housing 11, and the driving element 125 drives the conductive element 123 to move along the optical axis direction of the lens 121, that is, along the thickness direction of the electronic device 10. Since the lens 121 and the image sensor 122 are arranged on the same side of the conductive element 123, when the driving element 125 drives the conductive element 123 to approach the lens 121, the conductive element 123 will also approach the image sensor 122, and when the driving element 125 drives the conductive element 123 away from the lens 121, the conductive element 123 will also be away from the image sensor 122. When the driving element 125 drives the conductive element 123 to move along the optical axis direction of the lens 121, the path length of the light emitted from the lens 121 to the image sensor 122 can be changed, thereby changing the back focal length of the lens 121, and realizing the optical focus function of the camera module 12.

[0039] The camera module 12 achieves an optical focus function by driving the conductive element 123 to move along the optical axis direction of the lens 121 through the driving element 125, replacing the traditional method of achieving optical focus by moving the lens. Since the lens 121 and the image sensor 122 are arranged on the same side of the conductive element 123, when the driving element 125 drives the conductive element 123 to move relative to the lens 121, the conductive element 123 will also move relative to the image sensor 122 at the same time. In other words, when the conductive element 123 moves relative to the lens 121, the change in the back focus of the lens 121 is twice the displacement of the conductive element 123 relative to the lens 121. As a result, the conductive element 123 can achieve a greater focal length change effect with a smaller displacement, thereby increasing the focal length change range of the camera module 12 while reducing the movement range of the conductive element 123, which is beneficial to compressing the size of the camera module 12 in the optical axis direction of the lens 121 and also beneficial to improving the application range of the camera module 12.

[0040] refer to Figure 2As shown, in some embodiments, the optical axis of the lens 121 and the axis of the image sensor 122 are substantially parallel to each other, the conductive element 123 is configured to be able to deflect the optical path by 180°, and the area of ​​the conductive element 123 for receiving the light from the lens 121 and the area for emitting the light to the image sensor 122 may face the same side. In some embodiments, the conductive element 123 has a light-entry area 1234 and a light-exit area 1235, the light-entry area 1234 is arranged corresponding to the light-exiting side of the lens 121 and is used to receive the light from the lens 121, and the light-exit area 1235 is arranged corresponding to the photosensitive surface of the image sensor 122 and is used to emit the light to the image sensor 122. In some embodiments, the light-entry area 1234 and the light-exit area 1235 are coplanar, and the planes where the light-entry area 1234 and the light-exit area 1235 are located are substantially perpendicular to the optical axis of the lens 121 and the axis of the image sensor 122. With such a configuration, when the conductive element 123 moves relative to the lens 121 along the optical axis of the lens 121 , it will also move the same distance relative to the image sensor 122 , thereby improving the accuracy of the displacement of the conductive element 123 and the focal length change of the camera module 12 .

[0041] It should be noted that the conducting element 123 can deflect the optical path by 180°, so that the lens 121 and the image sensor 122 can be arranged on the same side of the conducting element 123, so that the lens 121 and the image sensor 122 at least partially overlap in the optical axis direction of the lens 121, which is conducive to reducing the size of the camera module 12 in the thickness direction of the electronic device 10, reducing the space occupied by the lens 121 and the image sensor 122 in the electronic device 10, and cooperating with the design of moving the conducting element 123 to achieve a larger focal length variation range through a smaller displacement, which can maximize the compression of the space occupied by the camera module 12 in the thickness direction of the electronic device 10. In the present application, the axis of the image sensor 122 can be perpendicular to the photosensitive surface of the image sensor 122.

[0042] In some embodiments, the conductive element 123 is configured to direct the light from the lens 121 to the image sensor 122 after at least three reflections, which helps to extend the propagation path of the light at the rear end of the lens 121, so that the conductive element 123 can adapt to the telephoto design of the lens 121, compressing the space occupied by the camera module 12 while obtaining sufficient optical magnification.

[0043] In some embodiments, the conductive element 123 has a first reflective surface 1231, a second reflective surface 1232 and a light-transmitting surface 1233, and the light-entering area 1234 and the light-exiting area 1235 are arranged on the light-transmitting surface 1233, the first reflective surface 1231 is inclined to the light-transmitting surface 1233 and is arranged corresponding to the light-entering area 1234, and the second reflective surface 1232 is inclined to the light-transmitting surface 1233 and is arranged corresponding to the light-exiting area 1235. At least part of the light from the lens 121 enters the conductive element 123 from the light incident area 1234 and is incident on the first reflective surface 1231. The first reflective surface 1231 can reflect at least part of the light incident on the first reflective surface 1231 to the light-transmitting surface 1233. The light-transmitting surface 1233 can reflect at least part of the light reflected from the first reflective surface 1231 to the light-transmitting surface 1233 to the second reflective surface 1232. The second reflective surface 1232 can reflect at least part of the light reflected from the light-transmitting surface 1233 to the second reflective surface 1232 to the light-exiting area 1235, so that the light is emitted from the conductive element 123 from the light-exiting area 1235 and is incident on the image sensor 122. With reference to the above description, the light-transmitting surface 1233 can be substantially perpendicular to the optical axis of the lens 121 and the axis of the image sensor 122.

[0044] In some embodiments, the angles between the first reflective surface 1231 and the second reflective surface 1232 and the light-transmitting surface 1233 are both greater than or equal to 25° and less than or equal to 35°, for example, 30°. Such a configuration can improve the efficiency and accuracy of the light reflected by the first reflective surface 1231, the second reflective surface 1232 and the light-transmitting surface 1233, so that the conductive element 123 can smoothly deflect the light path by 180°. It can be understood that, through the reasonable design of the angles and orientations of the first reflective surface 1231, the second reflective surface 1232 and the light-transmitting surface 1233, the incident angle of the light reflected by the first reflective surface 1231 to the light-transmitting surface 1233 on the light-transmitting surface 1233 meets the requirements of total reflection, which can improve the reflectivity of the light on the light-transmitting surface 1233, and improve the utilization efficiency and imaging quality of the light. However, the incident angles of the light on the first reflective surface 1231 and the second reflective surface 1232 are small, and it is difficult to reach the critical angle of total reflection. Therefore, in order to improve the reflectivity of light on the first reflection surface 1231 and the second reflection surface 1232, so as to improve the light utilization and imaging quality of the camera module 12, in some embodiments, a reflection-enhancing film layer 124 may also be provided on the first reflection surface 1231 and the second reflection surface 1232 to improve the reflectivity of light on the first reflection surface 1231 and the second reflection surface 1232.

[0045] The conductive element 123 in this embodiment can reflect at least part of the light three times and then project it onto the image sensor 122, so that the conductive element 123 is suitable for the telephoto design of the lens 121, for example, suitable for the lens 121 with a magnification of 2x-4x. When the lens 121 of the camera module 12 has a higher magnification, the conductive element 123 can also deflect the light more times to further extend the propagation path of the light in the conductive element 123, so as to adapt to the telephoto design of the lens 121.

[0046] It should be noted that the traditional camera module achieves the focusing function by moving the lens. Every time the lens moves 1um, the back focal length of the lens changes by 1um. Due to the limitation of the overall structural space of the electronic device, the moving space of the lens and the driving components is limited. For example, the reserved moving stroke for the lens is approximately 600um, resulting in the traditional camera module being able to only shoot objects at a distance of approximately 65cm in the close-focus state. In this embodiment, for every 1um movement of the conductive element 123 relative to the lens 121, the distance between the conductive element 123 and the lens 121 and the image sensor 122 will change by 1um, and the back focal length of the lens 121 will change by 2um. Therefore, when the movement stroke reserved for the driving element 125 and the conductive element 123 in the electronic device 10 is approximately 600um, the back focal length variation range of the lens 121 is 1200um, and the camera module 12 can focus on the subject with an object distance of 30cm in the close focus state, which can effectively improve the magnification and shooting effect of the camera module 12 for close-range subjects while compressing the occupied space of the camera module 12. Of course, the above stroke, focal length and object distance are only examples for the convenience of understanding that the camera module 12 of this case can improve the focus range. In fact, the stroke of the conductive element 123, the effective focal length of the camera module 12 and the applicable object distance range can also have other designs, which are specifically designed according to the structural layout and shooting requirements of the electronic device 10, and will not be repeated in this application.

[0047] In some embodiments, the first reflective surface 1231 and the second reflective surface 1232 may be connected to each other, and the conductive element 123 may be a prism, and may be substantially in the shape of a triangular prism. Figure 2As shown, in some embodiments, the conductive element 123 may also have a bottom surface 1236 connecting the first reflective surface 1231 and the second reflective surface 1232, and the bottom surface 1236 is arranged opposite to the light-transmitting surface 1233, for example, the bottom surface 1236 is substantially parallel to the light-transmitting surface 1233, and the cross section of the conductive element 123 may be substantially in the shape of an isosceles trapezoid. Of course, the bottom surface 1236 should be arranged away from the effective field of view of the first reflective surface 1231 and the second reflective surface 1232, so as not to affect the normal imaging of the camera module 12. On the basis of not affecting the imaging quality of the camera module 12, the bottom surface 1236 is arranged to reduce the size of the conductive element 123 in the optical axis direction of the lens 121 compared to using a prism as the conductive element 123, thereby further compressing the size of the camera module 12 in the thickness direction of the electronic device 10.

[0048] In some embodiments, the camera module 12 may further include an infrared filter 126 , which may be disposed between the conductive element 123 and the image sensor 122 . The infrared filter 126 may be used to filter out interference light to prevent the interference light from reaching the image sensor 122 and affecting the normal imaging of the camera module 12 .

[0049] Combination Figure 1 and Figure 3 As shown, in other embodiments, the lens 121 includes a first lens group 1211 and a second lens group 1212, and the first lens group 1211 and the second lens group 1212 may each include one or more lenses 1213 with optical power, the second lens group 1212 is disposed between the first lens group 1211 and the conductive element 123, the second lens group 1212 may be relatively fixed to the conductive element 123, and the driving element 125 is configured to be able to drive the second lens group 1212 and the conductive element 123 to move synchronously. The lens 121 is configured so that the effective focal length of the lens 121 can decrease as the first lens group 1211 and the second lens group 1212 move away from each other.

[0050] It is understandable that the lens 121 is divided into two lens groups, and the driving element 125 drives the conductive element 123 to move to achieve focusing, and simultaneously drives the second lens group 1212 to move relative to the first lens group 1211 to achieve the internal focusing process of the lens 121. Figure 2 In the embodiment shown, when the conductive element 123 moves 1um relative to the lens 121, the back focal length of the lens 121 changes by 2um. Figure 3In the embodiment shown, when the conducting element 123 and the second lens group 1212 move 1um relative to the first lens group 1211, the distance between the conducting element 123 and the image sensor 122 changes 1um, that is, the back focal length of the lens 121 changes 1um, and the effective focal length of the lens 121 will change to a greater extent than the change in the back focal length due to the internal focusing process of the relative movement of the first lens group 1211 and the second lens group 1212, for example, the effective focal length of the lens 121 will change by 4%-20%. Therefore, combining the moving focusing process of the conducting element 123 with the internal focusing process of the lens 121 is conducive to further increasing the focal length variation range of the camera module 12 while compressing the size of the camera module 12 along the thickness direction of the electronic device 10, so that the camera module 12 has a larger focusing range to be suitable for objects with a larger range of object distances. For example, if the moving range of the lens in a traditional camera module is approximately 600um, the camera module can only focus on an object with a distance of 65cm in the close focus state. Figure 3 For the camera module 12 shown, when the overall movement of the conductive element 123 and the second lens group 1212 is approximately 600um, due to the combination of the movement of the conductive element 123 relative to the image sensor 122 and the internal focusing process of the lens 121, the camera module 12 can focus on the subject with an object distance of 30cm or less than 30cm in the close focus state, thereby effectively improving the close focus magnification and shooting effect of the camera module 12 while compressing the occupied space of the camera module 12. Of course, the above stroke, focal length and object distance are only examples for the convenience of understanding that the camera module 12 of this case can improve the focus range. In fact, the stroke of the conductive element 123, the effective focal length of the camera module 12 and the applicable object distance range can also have other designs, which are specifically designed according to the structural layout of the electronic device 10 and the shooting requirements, and will not be repeated in this application.

[0051] Further, in some embodiments, the first lens group 1211 includes a plurality of lenses 1213 with optical power, the second lens group 1212 includes one or more lenses 1213 with optical power, and the number of lenses 1213 in the first lens group 1211 is greater than the number of lenses 1213 in the second lens group 1212. For example, the number of lenses 1213 in the first lens group 1211 may be three, and the number of lenses 1213 in the second lens group 1212 may be one. Thus, while the conductive element 123 drives the second lens group 1212 to achieve the internal focus of the lens 121 to improve the focal length variation range of the camera module 12, the driving load of the driving element 125 can also be reduced, thereby facilitating the reduction of the volume of the driving element 125 and further compressing the occupied space of the camera module 12.

[0052] Combination Figures 4 to 6As shown, in some embodiments, the camera module 12 includes a mounting member 20a, and the mounting member 20a includes a first mounting portion 201 and a second mounting portion 202 that are spaced apart. The camera module 12 also includes a lens 121, a focusing assembly, and an image sensor 122. The lens 121 is connected to the first mounting portion 201, and the image sensor 122 is connected to the second mounting portion 202. The lens 121 can be connected to the first mounting portion 201 through a lens holder 21a, or can be connected to the first mounting portion 201 by a snap connection or a threaded connection. The image sensor 122 can be packaged on a circuit board 25, and then connected to the second mounting portion 202 through the circuit board 25, and the circuit board 25 can be connected to the second mounting portion 202 by glue or screws. It can be understood that the first mounting portion 201 and the second mounting portion 202 provide mounting carriers for the lens 121 and the image sensor 122, so that the mounting member 20a can support the lens 121 and the image sensor 122. In this embodiment, the circuit board 25 includes but is not limited to a flexible circuit board (FPC) or a printed circuit board (PCB), and the circuit board 25 is used to realize the communication connection between the image sensor 122 and the external circuit, for example, to realize the communication connection between the photosensitive element and the central processing unit or other control chip of the electronic device. The mounting member 20a has a receiving space, and the focusing assembly is received in the receiving space. The focusing assembly is arranged between the lens 121 and the image sensor 122 along the optical path.

[0053] Combination Figure 6 and Figure 7 As shown, the focusing assembly includes a first light absorbing member 222 and a second light absorbing member 223, and the driving element 125 is used to drive the conductive element 123 to move along the optical axis of the lens 121 in the receiving space, thereby changing the optical path distance from the lens 121 to the image sensor 122 to achieve optical focusing. The first light absorbing member 222 is disposed on the first reflective surface 1231 and is used to absorb stray light directed to the first reflective surface 1231, and the second light absorbing member 223 is disposed on the second reflective surface 1232 and is used to absorb stray light directed to the second reflective surface 1232.

[0054] In the embodiment of the present application, the focus adjustment component is used to achieve focal length adjustment while minimizing stray light from entering the image sensor 122 to improve imaging quality. Figure 6 and Figure 7As shown, when focusing is performed using the focusing assembly, the conductive element 123 moves a distance of 1 unit along the optical axis of the lens 121, and the propagation path of the light reflected by the first reflecting surface 1231 and the second reflecting surface 1232 changes a distance of 2 units. Subsequently, when focusing requires the same focal length change, this structural setting can reduce the movement displacement of the conductive element 123 relative to the lens 121, thereby reducing the area of ​​the reflective region provided by the first reflecting surface 1231 and the second reflecting surface 1232 for reflecting light. In this way, when the first light absorbing member 222 and the second light absorbing member 223 are used to cover the area of ​​the first reflecting surface 1231 and the second reflecting surface 1232 illuminated by stray light to absorb the stray light, the design margin reserved for avoiding the reflective area can be reduced, thereby reducing the stray light entering the image sensor 122 and improving the imaging effect.

[0055] Furthermore, the mounting member 20a is provided with an anti-shake module, and the image sensor 122 is connected to the anti-shake module, and the anti-shake module is used to perform anti-shake on the image sensor 122. Since the anti-shake module can realize the movement of the image sensor 122 relative to the mounting member 20a, anti-shake can be achieved. Compared with the related art, anti-shake is achieved by moving the lens 121. Under this structure of the present application, the area of ​​the reflective area provided by the first reflective surface 1231 and the second reflective surface 1232 for reflecting light can be further reduced, so that the first light absorbing member 222 and the second light absorbing member 223 can cover as much area as possible that needs to absorb stray light.

[0056] The driving element 125 includes but is not limited to a voice coil motor. Figure 6 and Figure 7 As shown, the focusing assembly includes a movable seat 22a, a conductive element 123 is fixed to the movable seat 22a, and a driving element 125 includes a coil 225 and a magnet 226. The coil 225 is connected to the movable seat 22a, and the magnet 226 is connected to the mounting member 20a. When the coil 225 is energized, it can drive the movable seat 22a to move relative to the mounting member 20a along the optical axis of the lens 121 in the magnetic field of the magnet 226.

[0057] Furthermore, the camera module 12 also includes a detection component, which is electrically connected to the driving element 125 and is used to feedback the position of the conductive element 123 relative to the mounting member 20a to the driving element 125, and the driving element 125 is used to adjust the position of the conductive element 123 relative to the mounting member 20a according to the position fed back by the detection component. Through this feedback adjustment, the focusing speed of the camera module 12 is fast and the focusing accuracy is improved.

[0058] In some embodiments, in combination Figure 6 and Figure 7As shown, the detection component includes a Hall element 227, which is arranged on the movable seat 22a to move relative to the magnet 226 when the movable seat 22a moves, thereby inducing changes in magnetic field strength in the magnetic field of the magnet 226 to obtain the position of the conductive element 123 relative to the mounting member 20a.

[0059] Combination Fig. 9 and Fig.10 As shown, the detection component includes a first pole piece 228 and a second pole piece 229, the first pole piece 228 is connected to the mounting member 20a, the second pole piece 229 is connected to the movable seat 22a, the first pole piece 228 and the second pole piece 229 are arranged relative to each other to form a capacitor, and the capacitor is configured as follows: when the movable seat 22a drives the conductive element 123 to move relative to the mounting member 20a, the area directly facing each other between the first pole piece 228 and the second pole piece 229 changes, and the capacitance value of the capacitor changes. In this way, the current focus position can be known based on the corresponding relationship between the capacitance value of the capacitor and the focus position.

[0060] The structure of the detection component will not be described in detail here.

[0061] Recombination Figure 4 and Figure 5 As shown, a light blocking member 224 is provided in the conductive element 123, and the light blocking member 224 is located between the first reflecting surface 1231 and the second reflecting surface 1232. The light blocking member 224 is configured to be able to block at least one of the stray light reflected from the first reflecting surface 1231 to the light transmitting surface 1233 and the stray light reflected from the light transmitting surface 1233 to the second reflecting surface 1232.

[0062] A groove 2211 is formed on a side of the conductive element 123 facing away from the light-transmitting surface 1233 . The light blocking member 224 is disposed in the groove 2211 to further block stray light and prevent the stray light in the light emitted by the first reflective surface 1231 from being reflected to the image sensor 122 via the second reflective surface 1232 .

[0063] The first light absorbing member 222 is annular and defines a first light reflecting area on the first reflecting surface 1231. A first anti-reflection film is provided on the first reflecting surface 1231. The first anti-reflection film covers the first light reflecting area, thereby increasing the reflectivity of the light incident to the first light reflecting area by using the first anti-reflection film, thereby increasing the amount of light entering the image sensor 122.

[0064] The second light absorbing member 223 is annular and encloses and defines a second light reflecting area on the second reflecting surface 1232. A second anti-reflection film is provided on the second reflecting surface 1232. The second anti-reflection film covers the second light reflecting area, thereby utilizing the second anti-reflection film to increase the reflectivity of light incident on the second light reflecting area, thereby increasing the amount of light entering the image sensor 122. Both the first anti-reflection film and the second anti-reflection film are the anti-reflection film layer 124 mentioned above.

[0065] The first light absorbing member 222 , the second light absorbing member 223 and the light blocking member 224 may be formed on the conductive element 123 by screen printing or spin coating, or may be formed on the conductive element 123 by coating.

[0066] refer to Fig.11 , Fig.11 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 Fig.11 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.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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 Fig.11 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.

[0071] 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.

[0072] 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.

[0073] 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. Fig.11 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.

[0074] 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.

[0075] 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.

[0076] although Fig.11 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.

[0077] 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.

[0078] 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: Lens; Image sensor; as well as, The focusing assembly comprises a conducting element and a driving element, wherein the lens and the image sensor are arranged on the same side of the conducting element, the conducting element is used to conduct light from the lens to the image sensor, and the driving element is configured to drive the conducting element to move along the optical axis direction of the lens.

2. The camera module according to claim 1, characterized in that: The lens comprises a first lens group and a second lens group, wherein the second lens group is arranged between the first lens group and the conductive element, and the driving element is configured to drive the second lens group and the conductive element to move synchronously.

3. The camera module according to claim 2, characterized in that: The lens is configured such that an effective focal length can be reduced as the first lens group and the second lens group move away from each other.

4. The camera module according to claim 3, characterized in that: The first lens group includes a plurality of lenses with optical power, the second lens group includes one or more lenses with optical power, and the number of lenses in the first lens group is greater than the number of lenses in the second lens group.

5. The camera module according to claim 1, characterized in that: The optical axis of the lens is parallel to the axis of the image sensor, and the conductive element is configured to be able to deflect the optical path by 180 degrees.

6. The camera module according to claim 1, characterized in that: The conductive element has a light entrance area and a light exit area, the light entrance area is arranged corresponding to the light exit side of the lens, and the light exit area is arranged corresponding to the photosensitive surface of the image sensor. The conductive element can receive light from the lens through the light entrance area and can emit light from the light exit area, and the light entrance area and the light exit area are coplanar.

7. The camera module according to claim 6, characterized in that: The conductive element is configured to reflect the light from the lens at least three times and then project it onto the image sensor.

8. The camera module according to claim 7, characterized in that: The conductive element has a first reflective surface, a second reflective surface and a light-transmitting surface. The light-entering area and the light-exiting area are arranged on the light-transmitting surface. The first reflective surface is inclined to the light-transmitting surface and is arranged corresponding to the light-entering area. The second reflective surface is inclined to the light-transmitting surface and is arranged corresponding to the light-exiting area.

9. The camera module according to claim 8, characterized in that: The light-transmitting surface is perpendicular to the optical axis of the lens and the axis of the image sensor.

10. The camera module according to claim 8, characterized in that: The included angles between the first reflecting surface, the second reflecting surface and the light-transmitting surface are both 25°-35°.

11. The camera module according to claim 8, characterized in that: The conductive element further comprises a bottom surface connecting the first reflecting surface and the second reflecting surface, and the bottom surface is arranged opposite to the light-transmitting surface.

12. The camera module according to claim 8, characterized in that: The camera module also includes a mounting member, which has a receiving space and includes a first mounting portion and a second mounting portion that are spaced apart. The lens is connected to the first mounting portion, and the image sensor is connected to the second mounting portion. The focusing assembly is received in the receiving space. The focusing assembly also includes a first light absorbing member and a second light absorbing member. The first light absorbing member is disposed on the first reflecting surface and is used to absorb stray light directed toward the first reflecting surface. The second light absorbing member is disposed on the second reflecting surface and is used to absorb stray light directed toward the second reflecting surface.

13. The camera module according to claim 12, characterized in that: The conductive element is configured such that the light emitted from the lens to the light-transmitting surface can be incident on the first reflecting surface, and reflected from the first reflecting surface to the light-transmitting surface, and further reflected from the light-transmitting surface to the second reflecting surface.

14. The camera module according to claim 13, characterized in that: A light blocking member is disposed in the conductive element and is located between the first reflecting surface and the second reflecting surface. The light blocking member is configured to block at least one of stray light reflected from the first reflecting surface toward the first reflecting surface and stray light reflected from the first reflecting surface toward the second reflecting surface.

15. The camera module according to claim 14, characterized in that: A groove is formed on a side of the conductive element facing away from the first reflective surface, and the light blocking member is arranged in the groove.

16. The camera module according to claim 12, characterized in that: The first light absorbing element is annular and encloses and defines a first light reflecting area on the first reflecting surface. The first reflecting surface is provided with a first anti-reflection film, and the first anti-reflection film covers the first light reflecting area. And / or, the second light absorbing element is ring-shaped and encloses and defines a second light reflecting area on the second reflecting surface, the second reflecting surface is provided with a second reflection enhancing film, and the second reflection enhancing film covers the second light reflecting area.

17. The camera module according to claim 12, characterized in that: The focusing assembly also includes a movable seat, the conductive element is fixed to the movable seat, the driving element includes a magnet and a coil, the magnet is connected to the mounting member, the coil is connected to the movable seat, and when the coil is energized, it can drive the movable seat to move relative to the mounting member along the optical axis of the lens in the magnetic field of the magnet.

18. The camera module according to claim 17, characterized in that: The camera module also includes a detection component, which is electrically connected to the driving element and is used to feedback the position of the conductive element relative to the mounting member to the driving element. The driving element is used to adjust the position of the conductive element relative to the mounting member according to the position fed back by the detection component.

19. The camera module according to claim 18, characterized in that: The detection component includes a Hall element, and the Hall element is arranged on the movable seat to move relative to the magnet when the movable seat moves.

20. The camera module according to claim 18, characterized in that: The detection component includes a first pole piece and a second pole piece, the first pole piece is connected to the mounting member, the second pole piece is connected to the movable seat, the first pole piece and the second pole piece are arranged relative to each other to form a capacitor, and the capacitor is configured as follows: when the movable seat drives the conductive element to move relative to the mounting member, the facing area between the first pole piece and the second pole piece changes, and the capacitance value of the capacitor changes.

21. The camera module according to claim 12, characterized in that: The optical axis of the lens is perpendicular to the light-transmitting surface, and the image sensor is parallel to the light-transmitting surface.

22. The camera module according to claim 12, characterized in that: The mounting member is provided with an anti-shake module, the image sensor is connected to the anti-shake module, and the anti-shake module is used to drive the image sensor to move relative to the second mounting part.

23. An electronic device, characterized in that: It comprises a shell and a camera module as described in any one of claims 1 to 22, wherein the camera module is arranged in the shell.

24. The electronic device according to claim 23, characterized in that: The housing is provided with a light inlet hole, and the light incident side of the lens is arranged corresponding to the light inlet hole.

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