Camera module and electronic device

Abstract

The present application relates to the field of camera apparatuses. Provided are a camera module and an electronic device, which are used for mitigating the problem of contradiction between a zoom range and the size of the camera module. The camera module comprises a mounting base, a first turning element, a front lens group assembly, a rear lens group assembly and an image sensor, wherein the first turning element is located between a first optical path and a second optical path, optical axes of the first optical path and the second optical path being parallel to a first direction and a second direction, respectively; the front lens group assembly comprises a first carrier frame and a first front lens group, the first carrier frame carrying the first front lens group and being capable of moving relative to the mounting base in the second direction, and the first front lens group having, during movement of the first carrier frame, a first state where the first front lens group is located in the first optical path, and a second state where the first front lens group is exited from the first optical path; the rear lens group assembly comprises at least two rear lens groups arranged in the second direction in the second optical path; and the image sensor is located on a light-emergent side of the second optical path. The module can be applied to the electronic device.

Description

Camera module and electronic device

[0001] The present application claims priority to the Chinese Patent Application No. 202411348668.5, filed on September 25, 2024, entitled "Camera module and electronic device", and the Chinese Patent Application No. 202411552057.2, filed on October 31, 2024, entitled "Camera module and electronic device"; the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of camera devices, and in particular, to a camera module and an electronic device. BACKGROUND

[0003] With the development of camera modules in mobile phones, the imaging quality of mobile phones is getting better and better, and users are also getting more and more used to taking pictures through mobile phones. At the same time, users have higher and higher requirements for the imaging of camera modules in mobile phones. For example, users hope to achieve high-quality photography of both close-range and long-range through mobile phones.

[0004] Therefore, some periscopic camera modules capable of optical zoom are provided in the related art. The periscopic camera module can achieve close-range photography and long-range photography through switching of focal lengths. However, the periscopic camera module in the related art has a small zoom range, or in order to achieve a large zoom range, the zoom movement occupies a large space, thereby resulting in a large overall size of the module. SUMMARY

[0005] The present application provides a camera module and an electronic device to improve the contradiction between the zoom range and the size of the module.

[0006] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0007] In a first aspect, a camera module is provided, comprising a mounting base, a first turning element, a front lens group assembly, a rear lens group assembly, and an image sensor; wherein the first turning element is mounted on the mounting base and located between a first light path and a second light path; the optical axes of the first light path and the second light path are parallel to a first direction and a second direction, respectively, and the first direction and the second direction are perpendicular; the first turning element is configured to receive light rays incident along the first direction from the first light path and turn the light rays to be emitted along the second direction to the second light path.

[0008] The front lens group assembly comprises a first carrier and a first front lens group; the first carrier is used for carrying the first front lens group and can move relative to the mounting base along a second direction; the first front lens group has a first state and a second state during movement of the first carrier; the first front lens group in the first state is located in the first light path, and the first front lens group in the second state is out of the first light path.

[0009] The rear lens group assembly comprises at least two rear lens groups arranged along the second direction in the second light path, and the image sensor is located on the light exit side of the second light path and is used for photoelectric conversion of light rays exiting from the second light path.

[0010] In the first front lens group is in the first state and the second state respectively, the focal length of the camera module is the first focal length and the second focal length respectively; the first focal length and the second focal length are different.

[0011] In the camera module provided in the application, by controlling the first front lens group to be in the first state and the second state, the camera module can realize the function of imaging in the first focal length and the second focal length; and by controlling the state switching of the first front lens group, the camera module can realize the function of zooming between the first focal length and the second focal length. This zooming method has the advantages of large zooming ratio, simple zooming movement, easy structure realization, and no need for light shielding mechanism.

[0012] In addition, when the camera module zooms, the movement direction of the first front lens group is parallel to the second light path, and the first front lens group is at different heights (the height direction is parallel to the first direction) from the rear lens groups in the second light path, so the movement of the first front lens group does not occupy the space of the second light path. Such design is beneficial to increasing the design freedom of the rear lens groups in the second light path, for example, the number of rear lens groups can be increased, thereby improving the optical performance of the camera module. On the other hand, on the basis of realizing the same zooming capability, it is beneficial to reduce the size of the module and realize the miniaturization of the module.

[0013] It can be seen that the camera module provided in the application can realize zooming with a large zooming ratio while reducing the occupation of space, thereby improving the problem of contradiction between the zooming range and the size of the module.

[0014] In a possible implementation, the rear lens groups in the rear lens group assembly comprise a first rear lens group, and the rear lens group assembly further comprises a second carrier; the second carrier is used for carrying the first rear lens group and can move relative to the mounting base along the second direction.

[0015] In the camera module provided in the application, the rear lens group module comprises a movable first rear lens group; by controlling the movement of the first rear lens group, the zooming function can be realized in cooperation with the first front lens group; and by the combination of the first front lens group and the first rear lens group, it is beneficial to realize zooming with a large zooming ratio.

[0016] In a possible implementation, when the camera module switches between the first focal length and the second focal length, the first front mirror group and the first rear mirror group move towards the same side along the second direction; a movement stroke of the first front mirror group is a first stroke, and a movement stroke of the first rear mirror group is a second stroke, and the first stroke is greater than the second stroke.

[0017] The camera module further includes a first driving device and a second driving device, the second driving device is arranged on the mounting base and connected with the second carrier through a driving end, and the first driving device is arranged on the second carrier and connected with the first carrier through a driving end.

[0018] The second driving device is configured to drive the second carrier to move relative to the mounting base along the second direction, and the second carrier drives the first rear mirror group, the first driving device, the first carrier and the first front mirror group to move together; and the first driving device is configured to drive the first carrier to move relative to the second carrier along the second direction.

[0019] A driving stroke of the second driving device is equal to the second stroke, and a driving stroke of the first driving device is a stroke difference between the first stroke and the second stroke.

[0020] In this way, by cooperation of the first driving device and the second driving device, the requirement on the driving stroke of the first driving device can be reduced, so as to facilitate size reduction of the first driving device and cost reduction of the first driving device.

[0021] In a possible implementation, when the camera module switches between the first focal length and the second focal length, the first front mirror group and the first rear mirror group move towards the same side along the second direction; a movement stroke of the first front mirror group is a first stroke, and a movement stroke of the first rear mirror group is a second stroke, and the first stroke is less than the second stroke.

[0022] The camera module further includes a first driving device and a second driving device, the first driving device is arranged on the mounting base and connected with the first carrier through a driving end, and the second driving device is arranged on the first carrier and connected with the second carrier through a driving end.

[0023] The first driving device is configured to drive the first carrier to move relative to the mounting base along the second direction, and the first carrier drives the first front mirror group, the second driving device, the second carrier and the first rear mirror group to move together; and the second driving device is configured to drive the second carrier to move relative to the first carrier along the second direction.

[0024] A driving stroke of the first driving device is equal to the first stroke, and a driving stroke of the second driving device is a stroke difference between the second stroke and the first stroke.

[0025] In this way, by cooperation of the first driving device and the second driving device, the driving stroke requirement of the second driving device can be reduced, thereby facilitating size reduction of the second driving device and cost reduction of the second driving device.

[0026] In a possible implementation, the camera module further includes a first driving device and a second driving device, the first driving device is arranged on the mounting base and connected with the first carrier through a driving end, and the second driving device is arranged on the mounting base and connected with the second carrier through a driving end.

[0027] The first driving device is configured to drive the first carrier to move relative to the second carrier along a second direction, and the second driving device is configured to drive the second carrier to move relative to the mounting base along the second direction.

[0028] In a third direction, the first driving device and the second driving device are arranged on two sides of the first turning element, and the first direction, the second direction and the third direction are perpendicular to each other.

[0029] In this way, on one hand, the first carrier and the second carrier are driven by two driving devices respectively, and the driving is independent and easy to control. On the other hand, it is beneficial to reasonably utilize the module space and reduce the size of the module. On the other hand, it is beneficial to avoid the motion interference between the first driving device and the second driving device, thereby increasing the driving stroke of the first front lens group and the first rear lens group.

[0030] In a possible implementation, the camera module further includes a first driving device, and the first driving device is configured to drive the first carrier and the second carrier to move relative to the mounting base along the second direction.

[0031] In this way, the first front lens group and the first rear lens group can be driven to move by one driving device (the first driving device), thereby reducing the number of driving devices, and facilitating structure simplification, cost reduction and size reduction of the module.

[0032] In a possible implementation, when the camera module switches the focal length between the first focal length and the second focal length, the first front lens group and the first rear lens group move along the second direction towards the same side, the movement stroke of the first front lens group is a first stroke, the movement stroke of the first rear lens group is a second stroke, and the first stroke is greater than the second stroke.

[0033] The first driving device is arranged on the mounting base and connected with the first carrier through a driving end, and the driving stroke of the first driving device is equal to the first stroke.

[0034] One of the first carrier frame and the second carrier frame is provided with a buffer groove, and the other is provided with a connecting shaft extending into the buffer groove; the buffer groove comprises two action groove walls oppositely arranged in the second direction, and the two action groove walls are used for limiting the movement range of the connecting shaft in the buffer groove along the second direction; the movable distance of the connecting shaft in the buffer groove along the second direction is the stroke difference between the first stroke and the second stroke.

[0035] In the camera module provided in the application, the first carrier frame and the second carrier frame are connected through the buffer groove and the connecting shaft, so that the driving device can be shared when the focal length switching is performed under the condition that the movement stroke of the first front mirror group and the first rear mirror group is different, thereby the first front mirror group and the first rear mirror group can be driven to move through one driving device, and the number of driving devices can be reduced, which is beneficial to simplify the structure, reduce the cost and reduce the size of the module.

[0036] In a possible implementation, the mounting base is provided with a magnetic attraction structure, and the magnetic attraction structure is used for adsorbing and fixing the second carrier frame at the starting position and / or the end position of the second stroke. In this way, on the one hand, the position accuracy of the second carrier frame can be ensured, and the movement error caused by the cooperation of the buffer groove and the connecting shaft can be avoided; on the other hand, the second carrier frame at the starting position and / or the end position of the second stroke can be fixed, and the problem of shaking of the second carrier frame and the first rear mirror group caused by the cooperation of the buffer groove and the connecting shaft can be avoided, thereby the problem of damage to the camera module caused by the second carrier frame and the first rear mirror group can be avoided.

[0037] In a possible implementation, when the camera module performs focal length switching between the first focal length and the second focal length, the first front mirror group and the first rear mirror group move towards the same side along the second direction; the movement stroke of the first front mirror group is the first stroke, the movement stroke of the first rear mirror group is the second stroke, and the first stroke is smaller than the second stroke.

[0038] The first driving device is mounted on the mounting base, and the driving end is connected with the second carrier frame; the driving stroke of the first driving device is equal to the second stroke.

[0039] One of the first carrier frame and the second carrier frame is provided with a buffer groove, and the other is provided with a connecting shaft extending into the buffer groove; the buffer groove comprises two action groove walls oppositely arranged in the second direction, and the two action groove walls are used for limiting the movement range of the connecting shaft in the buffer groove along the second direction; the movable distance of the connecting shaft in the buffer groove along the second direction is the stroke difference between the second stroke and the first stroke.

[0040] In the camera module provided in the application, the first bearing frame and the second bearing frame are connected through the buffer groove and the connecting shaft, so that the driving device can be shared in the case that the movement stroke of the first front mirror group and the first rear mirror group is different when the focal length switching is performed, thereby the first front mirror group and the first rear mirror group can be driven by one driving device, and the number of driving devices can be reduced, which is beneficial to simplify the structure, reduce the cost and reduce the size of the module.

[0041] In a possible implementation, the mounting base is provided with a magnetic attraction structure for adsorbing and fixing the first bearing frame at the starting position and / or the end position of the first stroke. In this way, on the one hand, the position accuracy of the first bearing frame can be ensured, and the movement error caused by the cooperation of the buffer groove and the connecting shaft can be avoided; on the other hand, the first bearing frame at the starting position and / or the end position of the first stroke can be fixed, and the problem of shaking of the first bearing frame and the first front mirror group caused by the cooperation of the buffer groove and the connecting shaft can be avoided, thereby the problem of damage to the camera module caused by the first bearing frame and the first front mirror group can be avoided.

[0042] In a possible implementation, when the camera module performs focal length switching between the first focal length and the second focal length, the first front mirror group and the first rear mirror group move towards different sides along the second direction; the movement stroke of the first front mirror group is the first stroke, and the movement stroke of the first rear mirror group is the second stroke, and the first stroke is equal to the second stroke.

[0043] The first driving device has two driving ends moving towards different sides along the second direction, and the two driving ends are connected with the first bearing frame and the second bearing frame respectively.

[0044] In this way, the first front mirror group and the first rear mirror group can be driven to move towards different sides by one driving device, thereby the number of driving devices can be reduced, which is beneficial to simplify the structure, reduce the cost and reduce the size of the module.

[0045] In a possible implementation, the first driving device is mounted on the mounting base and includes a driving device body and a reverse linkage mechanism. The driving device body has a main driving end moving along the second direction, and the main driving end further includes a first rack structure extending along the second direction.

[0046] The reverse linkage mechanism includes an intermediate gear and a slave driving end. The intermediate gear is rotatably arranged on the mounting base about a middle axis perpendicular to the second direction; the slave driving end has a second rack structure extending along the second direction. The first rack structure and the second rack structure are arranged on both sides of the middle axis of the intermediate gear and are in mesh with the intermediate gear.

[0047] One of the main driving end and the slave driving end is connected with the first bearing frame, and the other is connected with the second bearing frame.

[0048] In the embodiment, the gear and the rack mechanism are adopted to achieve the purpose of driving the first front lens group and the first rear lens group to move towards different sides by one driving device, and the structure is simple, the reliability is good, and the accuracy of the reverse linkage is good.

[0049] In a possible implementation, the first driving device is mounted on the mounting base and includes a driving device body and a reverse linkage mechanism; the driving device body has a main driving end moving in the second direction.

[0050] The reverse linkage mechanism includes two belt pulleys arranged oppositely and a transmission belt sleeved outside the two belt pulleys; the central axis of the belt pulley is perpendicular to the second direction, the part of the transmission belt on one side of the two belt pulleys is connected with the main driving end, and the part on the other side is a driven end.

[0051] One of the main driving end and the driven end is connected with the first carrier, and the other is connected with the second carrier.

[0052] In the embodiment, the transmission belt mechanism is adopted to achieve the purpose of driving the first front lens group and the first rear lens group to move towards different sides by one driving device, and the structure is simple, the reliability is good, and the accuracy of the reverse linkage is good.

[0053] In a possible implementation, in the second direction, the rear lens group in the first front lens group and the rear lens group assembly in the second state is located on the same side of the first turning element. In this way, the movement of the first front lens group can be limited to the area above the first turning element and the second optical path, so that the size of the camera module in the second direction does not need to be increased, and the problem that the size of the camera module in the second direction is increased due to the movable design of the first front lens group is avoided; thereby facilitating the miniaturization of the camera module.

[0054] In a possible implementation, the first front lens group has positive optical power, and when the camera module switches the focal length between the first focal length and the second focal length, the first front lens group and the first rear lens group move towards different sides in the second direction; the first focal length is a small zoom ratio, and the second focal length is a large zoom ratio.

[0055] Alternatively, the first front lens group has negative optical power, and when the camera module switches the focal length between the first focal length and the second focal length, the first front lens group and the first rear lens group move towards the same side in the second direction; the first focal length is a large zoom ratio, and the second focal length is a small zoom ratio.

[0056] The camera module provided in the application can adapt to different zoom scenes, has good adaptability, and has a wide application range.

[0057] In a possible implementation, the mounting base is provided with a first sliding structure and a third sliding structure extending along the second direction; the first carrier has a second sliding structure in sliding cooperation with the first sliding structure; and the second carrier has a fourth sliding structure in sliding cooperation with the third sliding structure.

[0058] In the camera module provided in the application, the first carrier and the second carrier are both in sliding cooperation with the mounting base along the second direction, and the stability and accuracy of the movement are better.

[0059] In a possible implementation, the first sliding structure is a sliding rod, and the second sliding structure is a sliding groove or a sliding hole in sliding cooperation with the sliding rod; or the first sliding structure is a sliding groove, and the second sliding structure is a sliding protrusion in sliding cooperation with the sliding groove. In the camera module provided in the application, the first carrier and the mounting base can be in sliding cooperation in different structures, and the structural design is flexible and various, which can adapt to different application scenarios.

[0060] In a possible implementation, the first sliding structure and the third sliding structure are the same sliding structure, and the first carrier and the second carrier are both in sliding cooperation with the same sliding structure. In this way, the structure can be simplified, thereby facilitating the reduction of the size of the module. In addition, the first carrier and the second carrier are both in sliding cooperation with the same sliding structure, which facilitates the accuracy of the assembly position of the first carrier and the second carrier and the consistency of the movement direction.

[0061] In a possible implementation, the front lens group assembly includes a second front lens group, and the second front lens group is fixedly arranged in the first light path. Alternatively, the front lens group assembly includes a fourth carrier and a second front lens group; the fourth carrier is used for carrying the second front lens group and is capable of moving along the second direction relative to the mounting base; the second front lens group has a third state and a fourth state during the movement of the fourth carrier; the second front lens group in the third state is located in the first light path, and the second front lens group in the fourth state is out of the first light path.

[0062] In this way, the zoom ratio of the camera module can be improved, the zoom range can be expanded, and the imaging quality during zooming can be ensured.

[0063] In a possible implementation, the rear lens group in the rear lens group assembly includes a second rear lens group; and the rear lens group assembly further includes a third carrier, and the third carrier is used for carrying the second rear lens group and is capable of moving along the second direction relative to the mounting base. In this way, the zoom ratio of the camera module can be improved, the zoom range can be expanded, and the imaging quality during zooming can be ensured.

[0064] In a possible implementation, the rear mirror group assembly comprises 2, 3 or 4 rear mirrors. In this way, the zoom ratio of the camera module can be improved, and the zoom range can be expanded. In addition, the imaging quality during zooming can be ensured.

[0065] In a possible implementation, the first driving device comprises a piezoelectric motor or a voice coil motor. In this way, the first driving device has the advantages of small occupied volume and high motion precision.

[0066] In a possible implementation, the first driving device comprises a rotary motor and a transmission mechanism. The transmission mechanism is connected to the rotary motor and is configured to convert the rotary motion of the rotary motor into linear motion. The linear motion part of the transmission mechanism is configured to drive the first carrier frame. In the camera module provided in the present application, the first driving device can also be a combination of a rotary motor and a transmission mechanism. The device has flexible and diverse design, and a wide selection range, so that it can be applied to different application scenarios.

[0067] In a possible implementation, the camera module further comprises an optical image stabilizer. The first turning element or the image sensor is mounted on the mounting base through the optical image stabilizer. In this way, the anti-shake performance of the camera module can be improved.

[0068] In a possible implementation, the camera module further comprises a second turning element. The second turning element and the first turning element are arranged at two ends of the second optical path. The second turning element is configured to connect the second optical path and a third optical path. The image sensor is arranged in the third optical path. Through the second turning element, the placement position and the placement posture of the image sensor in the camera module can be changed, so that different scenes can be adapted.

[0069] In a possible implementation, the camera module further comprises an optical image stabilizer. The first turning element, the second turning element or the image sensor is mounted on the mounting base through the optical image stabilizer. In this way, the anti-shake performance of the camera module can be improved. In addition, the optical image stabilizer can be arranged at different positions according to actual conditions, and is used for anti-shake design of different devices. The anti-shake scheme is flexible and diverse.

[0070] The second aspect also provides an electronic device comprising a housing and any of the camera modules described above. The camera module is arranged in the housing. The electronic device can achieve the same technical effects as the camera module in any of the above embodiments, and details are not repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0071] FIG. 1 is a schematic view of an electronic device provided in an embodiment of the present application;

[0072] FIG. 2 is a structural schematic diagram of a camera module according to an embodiment of the present application;

[0073] FIG. 3 is an exploded view of a camera module according to an embodiment of the present application;

[0074] FIG. 4 is a structural schematic diagram of an optical device in FIG. 3;

[0075] FIG. 5 is an optical schematic diagram of a camera module according to an embodiment of the present application;

[0076] FIG. 6 is a structural schematic diagram of a mounting base in FIG. 3;

[0077] FIG. 7 is a structural schematic diagram of a first carrier and a first front lens group in FIG. 3;

[0078] FIG. 8 is a schematic diagram of the cooperation between the mounting base and the first carrier and the first driving device in FIG. 3;

[0079] FIG. 9 is a structural schematic diagram of the first driving device in FIG. 3;

[0080] FIG. 10 is a schematic diagram of the cooperation between the first rear lens group, the second carrier, the second rear lens group and the second carrier in FIG. 3;

[0081] FIG. 11 is a schematic diagram of the cooperation between the mounting base and the second carrier and the fourth carrier in FIG. 3;

[0082] FIG. 12 is a schematic diagram of the arrangement of an image sensor in a camera module according to an embodiment of the present application;

[0083] FIG. 13 is an optical schematic diagram of another camera module according to an embodiment of the present application;

[0084] FIG. 14 is a schematic diagram of the working state of a camera module according to an embodiment of the present application;

[0085] FIG. 15 is a schematic diagram of the linkage of lens groups in a camera module according to an embodiment of the present application;

[0086] FIG. 16 is a schematic diagram of the linkage of lens groups in another camera module according to an embodiment of the present application;

[0087] FIG. 17 is a schematic diagram of the working state of another camera module according to an embodiment of the present application;

[0088] FIG. 18 is a schematic diagram of the linkage of lens groups in another camera module according to an embodiment of the present application;

[0089] FIG. 19 is a schematic diagram of the linkage of lens groups in another camera module according to an embodiment of the present application;

[0090] FIG. 20 is a schematic diagram of the linkage of lens groups in another camera module according to an embodiment of the present application;

[0091] FIG. 21 is a schematic diagram of a movement process of the camera module in FIG. 20;

[0092] FIG. 22 is a schematic diagram of a mirror group linkage in another camera module according to an embodiment of the present application;

[0093] FIG. 23 is a schematic diagram of a structure of a buffer groove and a connecting shaft in FIG. 22;

[0094] FIG. 24 is a schematic diagram of a cooperation movement of a buffer groove and a connecting shaft according to an embodiment of the present application;

[0095] FIG. 25 is a schematic diagram of a cooperation movement of another buffer groove and another connecting shaft according to an embodiment of the present application;

[0096] FIG. 26 is a schematic diagram of a working state of another camera module according to an embodiment of the present application. DETAILED DESCRIPTION

[0097] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments.

[0098] Hereinafter, in the embodiments of the present application, the terms "first", "second", and the like are only used for description convenience, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second", and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0099] In the embodiments of the present application, "up", "down", "left", and "right" are not limited to be defined according to the relative positions of the components in the drawings, and it should be understood that these directional terms can be relative concepts, which are used for relative description and clarification, and can be changed accordingly according to the changes of the positions of the components in the drawings.

[0100] In the embodiments of the present application, unless the context requires otherwise, in the entire specification and claims, the term "comprising" is interpreted to be open, inclusive meaning, i.e. "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiment", "exemplarily" or "some examples" and the like are intended to mean that the specific features, structures, materials or characteristics related to the embodiment or example are included in at least one embodiment or example of the present application. The exemplary representation of the above terms does not necessarily mean the same embodiment or example. In addition, the specific features, structures, materials or characteristics described can be included in any one or more embodiments or examples in any appropriate manner.

[0101] As used herein, "about," "approximately," or "around" includes the value recited and the average value within an acceptable range of deviation, as determined by one of ordinary skill in the art considering the measurement in question and the error in measuring the particular quantity (i.e., the limitations of the measurement system).

[0102] As used herein, "parallel," "perpendicular," "equal" includes the recited condition and conditions that approximate the recited condition, the approximation being within an acceptable range of deviation, as determined by one of ordinary skill in the art considering the measurement in question and the error in measuring the particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallel and near parallel, where near parallel can have an acceptable range of deviation, for example, within 5°; "perpendicular" includes absolute perpendicular and near perpendicular, where near perpendicular can also have an acceptable range of deviation, for example, within 5°. "Equal" includes absolute equality and near equality, where near equality can have an acceptable range of deviation, for example, a difference between the two that is less than or equal to 5% of either.

[0103] It will be understood that when a layer or element is referred to as being "on" another layer or substrate, it can be directly on the other layer or substrate or intervening layers can also be present.

[0104] Exemplary embodiments are described herein with reference to cross-sectional and / or plan view illustrations and / or equivalent circuit diagrams that are idealized illustrations. In the interest of clarity, not all of the scale of the layers and regions are necessarily shown to the same scale, however, the dimensions of the layers and regions shown are intended to cause those of ordinary skill in the art to understand the concepts. Thus, the exemplary embodiments are not to be construed as limited to the precise shapes and regions illustrated herein but are intended to include any shapes and regions that might be present as a result of, for example, manufacturing techniques and / or tolerances. For example, an etched region illustrated as a rectangle will typically have rounded surfaces and / or rough sidewalls of less than 90° when fabricated. Thus, the regions illustrated in the figures are schematic and not intended to limit the scope of the exemplary embodiments in terms of the precise shape of the regions.

[0105] Embodiments of the present application provide an electronic device, which can have a display function. The electronic device can be applied to various communication systems or communication protocols, such as Bluetooth (BT) communication technology, global positioning system (GPS) communication technology, global system of mobile communication (GSM) communication technology, wireless local area network (WLAN) communication technology (such as WiFi), wideband code division multiple access wireless (WCDMA) communication technology, long term evolution (LTE), 5G communication technology, and other future communication technologies.

[0106] The electronic device in embodiments of the present application can be a mobile phone, a pad, a notebook computer, a camera, a smart home, a smart wearable device (such as a smart watch, a smart bracelet, smart glasses, and a smart helmet), a virtual reality (VR) electronic device, an augmented reality (AR) electronic device, and the like. The electronic device can also be a handheld device with a wireless communication function, a computing device, or other processing devices connected to a wireless modem, a vehicle-mounted device, an electronic device in a 5G network or an electronic device in a future evolved public land mobile network (PLMN), and the like. Embodiments of the present application are not limited thereto.

[0107] The structure of the electronic device 100 is exemplarily illustrated in FIG. 1 taking a mobile phone as an example. As shown in FIG. 1, the electronic device 100 provided by embodiments of the present application can include a display screen 130, a back cover 122 located at the back of the display screen 130 (opposite to the display surface of the display screen 130), and a middle frame 121 located between the display screen 130 and the back cover 122. The middle frame 121 can support the display screen 130.

[0108] The display screen 130 can be a liquid crystal display (LCD), or an organic light emitting diode (OLED) display screen, or a micro or mini light-emitting diode display screen, or a quantum dot light emitting diode (QLED) display screen, etc. The type of the display screen 130 is not limited in the present application.

[0109] The electronic device 100 can further include a circuit board 110 electrically connected to the display screen 130, and the circuit board 110 is provided with a processor electrically connected to the display screen 130.

[0110] Please continue to refer to FIG. 1. In the electronic device 100, the back cover 122 is buckled on the middle frame 121, so that the mounting space is formed between the back cover 122 and the middle frame 121, for accommodating the circuit board 110, the processor, the battery and other devices. The processor can provide display data to the display screen 130 to drive the display screen 130 to display images.

[0111] For example, the processor can include one or more processing units. For example, the processor can include an application processor (AP), a modem processor, a graphics processing unit (GPU), an image signal processor (ISP), a controller, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural-network processing unit (NPU), etc. Different processing units can be independent devices or integrated into one or more processors.

[0112] In addition, the electronic device 100 can further include a gyro sensor, a hall sensor, an external memory interface, an internal memory, a universal serial bus (USB) interface, a charging management module, a power management module, a battery, an antenna, a mobile communication module, a wireless communication module, an audio module, a speaker, a receiver, a microphone, an earphone interface, a sensor module, a key, and a camera, etc. electrically connected with the processor. The sensor module can include a pressure sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a distance sensor, a proximity light sensor, a fingerprint sensor, a temperature sensor, a touch sensor, an ambient light sensor, and a bone conduction sensor, etc.

[0113] In some embodiments, in order to enable the electronic device 100 to realize the photographing function, a camera module 1 is further provided. The rear shell 122 and the middle frame 121 can constitute a housing 120 of the electronic device 100, and the camera module 1 can be arranged in the housing 120. According to different photographing areas, the camera module 1 can be used as a front camera or a rear camera; the number of the camera module 1 in the electronic device 100 can be one, two or more; the number of the camera module 1 in the electronic device 100 and the photographing area are not limited in the embodiments of the present application.

[0114] The embodiments of the present application provide a camera module 1, which can be applied to the electronic device 100, and the electronic device 100 can realize the photographing function through the camera module 1.

[0115] As shown in FIGS. 2 and 3, the camera module 1 provided by the embodiments of the present application includes a mounting base 3, a module shell 2, a front lens group assembly 20, a first turning element 6, a rear lens group assembly 21, a second turning element 10, a filter 12 and an image sensor 11. The mounting base 3 is the installation basis of other components (such as the front lens group assembly 20, the first turning element 6, the rear lens group assembly 21, the second turning element 10, the filter 12 and the image sensor 11, etc.), which is used to provide installation space and installation structure for other components. For this part, please refer to the following description. The module shell 2 is covered on the mounting base 3, and forms a surrounding structure with the mounting base 3, which is used to realize certain protection for at least part of the components installed on the mounting base 3.

[0116] In the camera module 1, the first turning element 6 is an optical element capable of changing the direction of light propagation, for example, a mirror or an optical prism can be selected. Please refer to FIG. 4 and FIG. 5, the first turning element 6 is installed on the mounting base 3 and located between the first light path and the second light path; wherein the first light path refers to the light path in the camera module 1 with the first optical axis O1, and the second light path refers to the light path in the camera module 1 with the second optical axis O2; the first optical axis O1 and the second optical axis O2 are perpendicular to each other. The first turning element 6 is used to receive the light incident to the first turning element 6 along the first optical axis O1 from the first light path, and turn the incident light into light out of the second light path along the second optical axis O2. Through the first turning element 6, the function of connecting the first light path and the second light path with perpendicular optical axes can be realized.

[0117] For example, as shown in FIG. 4 and FIG. 5, the first turning element 6 is selected as a right-angle prism, which includes a first right-angle edge mirror surface and a second right-angle edge mirror surface connected vertically, and a bevel mirror surface connecting the first right-angle edge mirror surface and the second right-angle edge mirror surface; wherein the bevel mirror surface is a reflecting mirror surface. For the right-angle prism installed on the mounting base 3, the first right-angle edge mirror surface faces the first light path, and the second right-angle edge mirror surface faces the second light path. In operation, the light propagating along the first optical axis O1 in the first light path enters the right-angle prism through the first right-angle edge mirror surface, and is reflected by the reflecting mirror surface in the right-angle prism and then out of the second right-angle edge mirror surface; the light out of the second right-angle edge mirror surface propagates along the second optical axis O2 in the second light path.

[0118] In order to facilitate the description of the structure and working process of the camera module 1, in this paper, the direction parallel to the first optical axis O1 and the second optical axis O2 is referred to as the first direction X and the second direction Y respectively, and the direction perpendicular to the first direction X and the second direction Y is referred to as the third direction Z. Taking the first direction X, the second direction Y and the third direction Z as the direction reference, the scheme provided by the embodiments of the present application is exemplarily described.

[0119] Please continue to refer to FIG. 3 to FIG. 5, the front lens group assembly 20 includes the first front lens group 4 and the second front lens group 5; wherein the optical axis of the first front lens group 4 is parallel to the first direction X, that is, parallel to the first optical axis O1; and is a movable lens group that can move along the second direction Y relative to the mounting base 3.

[0120] In this embodiment, as shown in FIG. 6 to FIG. 8, the first sliding structure 31 extending along the second direction Y is arranged on the mounting base 3. The first front lens group 4 in the front lens group assembly 20 includes the first carrier 13, which is used to carry the first front lens group 4 and has the second sliding structure 133 cooperating with the first sliding structure 31. Through the sliding cooperation of the first sliding structure 31 and the second sliding structure 133, the first front lens group 4 can realize the purpose of moving along the first direction X relative to the mounting base 3 in a sliding manner.

[0121] The first sliding structure 31 and the second sliding structure 133 can adopt any structure combination capable of realizing linear sliding. For example, the first sliding structure 31 can be a slide rod or a slide groove extending along the second direction Y. The slide rod can be a rod-shaped structure with a circular, elliptical, triangular, square, rectangular, pentagonal or hexagonal cross section (cross section perpendicular to the length direction). The slide groove can be a groove structure with a semicircular, triangular, square or rectangular cross section (cross section perpendicular to the length direction). Correspondingly, when the first sliding structure 31 is a slide rod, the second sliding structure 133 can be a slide groove, a sliding hole or a sliding plane matched with the slide rod; when the first sliding structure 31 is a slide groove, the second sliding structure 133 can be a sliding protrusion matched with the slide groove.

[0122] For example, as shown in FIGS. 6-8, the first sliding structure 31 includes two cylindrical slide rods extending along the second direction Y, which are respectively a first slide rod 311 and a second slide rod 312. The first slide rod 311 and the second slide rod 312 are respectively disposed on two sides of the first front lens group 4 along the third direction Z. The second sliding structure 133 in the first carrier 13 includes a first sliding part 131 and a second sliding part 132 respectively located on two sides of the first front lens group 4 along the third direction Z. The first sliding part 131 corresponds to the first slide rod 311 and has a sliding plane in contact with the first slide rod 311 on the side facing the first slide rod 311. The second sliding part 132 corresponds to the second slide rod 312 and has a slide groove matched with the second slide rod 312 on the side facing the second slide rod 312.

[0123] In the above embodiment, the first carrier 13 moves along the second direction Y in a sliding manner relative to the mounting base 3, but the camera module 1 provided by the embodiments of the present application is not limited to this. For example, in some embodiments, the first carrier 13 can move along the second direction Y relative to the mounting base 3 in a rolling manner through rolling structures such as rollers and balls. For example, the mounting base 3 is provided with a rolling groove extending along the second direction Y, and the first carrier 13 is provided with at least two balls arranged along the second direction Y. The balls in the first carrier 13 can roll in the rolling groove. When the balls in the first carrier 13 roll in the rolling groove, the purpose of moving along the second direction Y relative to the mounting base 3 can be achieved in a rolling manner.

[0124] Please continue to refer to FIG. 5. The first front lens group 4 has a first state and a second state during movement along the second direction Y. The first front lens group 4 in the first state is in the first optical path and participates in the optical imaging of the camera module 1. The first front lens group 4 in the second state is out of the first optical path and does not participate in the optical imaging of the camera module 1.

[0125] In some embodiments, as shown in FIG. 5, during the switching from the first state to the second state, the first front lens group 4 moves in the second direction Y towards the side where the second optical path is located; in the second direction Y, both the first front lens group 4 in the second state and the second optical path (for example, the rear lens group in the second optical path, the content about the rear lens group can be referred to below) are located on the same side of the first turning element 6. By designing in this way, the movement of the first front lens group 4 can be limited to the upper area of the first turning element 6 and the second optical path, so that the size of the camera module 1 in the second direction Y does not need to be increased, avoiding the problem that the size of the camera module 1 in the second direction Y is increased due to the active design of the first front lens group 4 in the second direction Y, and is conducive to the miniaturization of the camera module 1.

[0126] Please refer to FIG. 3 and FIG. 8, the first driving device 16 is further included in the front lens group assembly 20 and is arranged on the mounting base 3. The first driving device 16 is a linear driving device and has a first driving end reciprocating in the second direction Y, which is connected with the first bearing frame 13. The first driving device 16 drives the first front lens group 4 to move in the second direction Y through the first driving end and the first bearing frame 13, so as to achieve the purpose of controlling the switching of the first front lens group 4 between the first state and the second state.

[0127] In the embodiment, as shown in FIG. 3, FIG. 8 and FIG. 9, the first driving device 16 is a piezoelectric motor arranged on the mounting base 3 and located on one side of the first turning element 6 and the second optical path in the third direction Z. The piezoelectric motor includes a support structure 161, a piezoelectric resonator 162 and a piezoelectric driven part 163; wherein the support structure 161 is mounted on the mounting base 3, the piezoelectric resonator 162 is mounted on the support structure 161, and the piezoelectric driven part 163 is located on the inner side of the support structure 161 and is pressed by the piezoelectric resonator 162. The piezoelectric driven part 163 is connected with the first bearing frame 13 and serves as the first driving end of the first driving device 16.

[0128] In operation, the piezoelectric resonator 162 vibrates under the action of voltage, drives the piezoelectric driven part 163 to move in the second direction Y, and drives the first bearing frame 13 and the first front lens group 4 to move in the second direction Y relative to the mounting base 3 in the process of moving in the second direction Y, so as to achieve the purpose of controlling the switching of the first front lens group 4 between the first state and the second state.

[0129] In some embodiments, the first driving device 16 can also be a voice coil motor (VCM). The voice coil motor includes a magnet and a coil. According to different arrangements of the magnet and the coil, the voice coil motor can be classified into a moving magnet type and a moving coil type. For example, the first driving device 16 can be a moving magnet type voice coil motor. In this case, the magnet is arranged on the first carrier 13, and the coil is mounted on the mounting base 3 and surrounds the magnet. In operation, the coil is powered, and the powered coil generates an interaction force in the magnetic field of the magnet. The interaction force drives the magnet and the first carrier 13 connected to the magnet to move in the second direction Y, thereby driving the first front lens group 4 to move relative to the mounting base 3 in the second direction Y, and achieving the purpose of controlling the first front lens group 4 to switch between the first state and the second state.

[0130] For another example, the first driving device 16 can be a moving coil type voice coil motor. In this case, the magnet is mounted on the mounting base 3, and the coil is arranged on the first carrier 13 and surrounds the magnet. In operation, the coil is powered, and the powered coil generates an interaction force in the magnetic field of the magnet. The interaction force drives the coil and the first carrier 13 connected to the coil to move in the second direction Y, thereby driving the first front lens group 4 to move relative to the mounting base 3 in the second direction Y, and achieving the purpose of controlling the first front lens group 4 to switch between the first state and the second state.

[0131] In the camera module 1 provided in the embodiments of the present application, the first driving device 16 can also be other types of linear driving devices, such as a linear motor. Alternatively, the first driving device 16 can be a combined linear driving device. For example, the first driving device 16 can include a rotary motor and a transmission mechanism. The rotary motor includes a motor shaft that rotates around an axis. The transmission mechanism is connected to the rotary motor and is configured to convert the rotation of the motor shaft around the axis into linear motion. The part of the transmission mechanism that moves linearly can be used as the first driving end, which is connected to the first carrier 13.

[0132] The transmission mechanism in the first driving device 16 can be any transmission mechanism that can convert rotary motion into linear motion, such as a gear and rack transmission mechanism, a threaded screw transmission mechanism, or a crank slider transmission mechanism. In the case where the transmission mechanism in the first driving device 16 is a threaded screw transmission mechanism, the threaded screw can be used to replace at least part of the first sliding structure and the second sliding structure.

[0133] Please continue to refer to FIGS. 3-5, in the front lens group assembly 20, the optical axis of the second front lens group 5 is parallel to the first direction X, and is a fixed lens group fixedly installed on the mounting base 3. The fixation of the second front lens group 5 and the mounting base 3 can be achieved by adhesive connection, or by buckle, threaded connection, or other fixation methods known to those skilled in the art. The optical axis of the second front lens group 5 fixedly installed on the mounting base 3 coincides with the first optical axis O1, that is, in the first optical path, always participates in the optical imaging of the camera module 1.

[0134] In some embodiments, as shown in FIGS. 3-5, in the first direction X, the second front lens group 5 is closer to the first turning element 6 than the first front lens group 4. That is, the optical axis of the second front lens group 5 coincides with the optical axis of the first front lens group 4 in the first state, and the first front lens group 4 in the first state is located on the side of the second front lens group 5 away from the first turning element 6.

[0135] Please continue to refer to FIGS. 3-5, the rear lens group assembly 21 includes three rear lens groups arranged along the second direction Y in the second optical path, which are the first rear lens group 8, the second rear lens group 9 and the third rear lens group 7. Among them, the optical axes of the first rear lens group 8 and the second rear lens group 9 are parallel to the second direction Y and coincide with the second optical axis O2; and both are movable lens groups that can move along the second direction Y relative to the mounting base 3. Unlike the first front lens group 4, the first rear lens group 8 and the second rear lens group 9 move along the second direction Y relative to the mounting base 3 in the second optical path, and can change the position in the second optical path, but always participate in the optical imaging of the camera module 1.

[0136] In the present embodiment, as shown in FIGS. 6, 10 and 11, the third sliding structure 32 extending along the second direction Y is provided on the mounting base 3. The rear lens group assembly 21 includes a second carrier 14 and a third carrier 15, wherein the second carrier 14 is used to carry the first rear lens group 8, and has a fourth sliding structure 143 cooperating with the third sliding structure 32. Through the cooperation of the third sliding structure 32 and the fourth sliding structure 143, the first rear lens group 8 can achieve the purpose of moving along the second direction Y relative to the mounting base 3 by sliding. The third carrier 15 is used to carry the second rear lens group 9, and has a fifth sliding structure 153 cooperating with the third sliding structure 32. Through the cooperation of the third sliding structure 32 and the fifth sliding structure 153, the second rear lens group 9 can achieve the purpose of moving along the second direction Y relative to the mounting base 3 by sliding.

[0137] The third sliding structure 32 and the fourth sliding structure 143, and the third sliding structure 32 and the fifth sliding structure 153 can adopt any structure combination capable of realizing linear sliding; for example, the third sliding structure 32 can be a slide rod or a slide groove extending along the second direction Y; correspondingly, the fourth sliding structure 143 and the fifth sliding structure 153 can be a slide groove, a slide hole or a slide plane matched with the slide rod; the fourth sliding structure 143 and the fifth sliding structure 153 can also be a slide protrusion matched with the slide groove. This part can refer to the description of the first sliding structure 31 and the second sliding structure 133 above, and will not be described here again.

[0138] In the embodiment, as shown in FIG. 6, FIG. 10 and FIG. 11, the third sliding structure 32 includes two cylindrical slide rods extending along the second direction Y, which are respectively a third slide rod 321 and a fourth slide rod 322, and the third slide rod 321 and the fourth slide rod 322 are distributed on both sides of the second optical path along the third direction Z. The fourth sliding structure 143 in the second carrier 14 includes a third sliding part 141 and a fourth sliding part 142 located on both sides of the first rear mirror group 8 along the third direction Z, the third sliding part 141 corresponds to the third slide rod 321, and a slide groove matched with the third slide rod 321 is arranged on the side facing the third slide rod 321. The fourth sliding part 142 corresponds to the fourth slide rod 322, and has a slide plane in contact with the fourth slide rod 322 on the side facing the fourth slide rod 322. The fifth sliding structure 153 in the third carrier 15 includes a fifth sliding part 151 and a sixth sliding part 152 located on both sides of the second rear mirror group 9 along the third direction Z, the fifth sliding part 151 corresponds to the third slide rod 321, and a slide groove matched with the third slide rod 321 is arranged on the side facing the third slide rod 321. The sixth sliding part 152 corresponds to the fourth slide rod 322, and has a slide plane in contact with the fourth slide rod 322 on the side facing the fourth slide rod 322.

[0139] In some embodiments, the first sliding structure 31 and the third sliding structure 32 can be the same structure, that is, the movable mirror groups in the front mirror group assembly 20 and the rear mirror group assembly 21 can slide on the same sliding structure; by such design, on the one hand, the structure can be simplified, and on the other hand, the consistency of the assembly direction and the movement direction can be ensured based on the same sliding structure; thereby facilitating the movement control of the movable mirror groups in the front mirror group assembly 20 and the rear mirror group assembly 21.

[0140] In the above embodiment, the second carrier 14 and the third carrier 15 are configured to move along the second direction Y in a sliding manner relative to the mounting base 3, but the camera module 1 provided by the embodiments of the present application is not limited thereto. In some embodiments, the second carrier 14 and the third carrier 15 can move along the second direction Y relative to the mounting base 3 in a rolling manner through rolling structures such as rollers and balls. For example, the mounting base 3 is provided with a rolling groove extending along the second direction Y, and the second carrier 14 and the third carrier 15 are each provided with at least two balls arranged along the second direction Y. The balls in the second carrier 14 and the third carrier 15 can roll in the rolling groove. When the balls in the second carrier 14 and the third carrier 15 roll in the rolling groove, the purpose of moving along the second direction Y relative to the mounting base 3 in a rolling manner can be achieved.

[0141] As shown in FIG. 3 and FIG. 11, the rear mirror group assembly 21 further includes a second driving device 17 and a third driving device 18 disposed on the mounting base 3. The second driving device 17 and the third driving device 18 are linear driving devices, each having a second driving end and a third driving end reciprocating along the second direction Y. The second driving end is connected to the second carrier 14, and the third driving end is connected to the third carrier 15. The second driving device 17 drives the first rear mirror group 8 to move along the second direction Y relative to the mounting base 3 through the second driving end and the second carrier 14. The third driving device 18 drives the second rear mirror group 9 to move along the second direction Y relative to the mounting base 3 through the third driving end and the third carrier 15.

[0142] In the present embodiment, the second driving device 17 and the third driving device 18 can each be a piezoelectric motor. In the third direction Z, the second driving device 17 and the third driving device 18 are located on the same side of the first turning element 6 and the second optical path, and are separated from the first driving device 16 on both sides of the first turning element 6 and the second optical path.

[0143] In some embodiments, the second driving device 17 and the third driving device 18 can also be linear driving devices such as voice coil motors and linear motors, or combined linear driving devices.

[0144] For the second driving device 17 and the third driving device 18, reference can be made to the description of the first driving device 16 above, which will not be repeated here.

[0145] Please continue to refer to FIG. 3 to FIG. 5, in the rear mirror group assembly 21, the optical axis of the third rear mirror group 7 is parallel to the second direction Y, coincides with the second optical axis O2; and is a fixed mirror group fixedly installed on the mounting base 3. The third rear mirror group 7, the first rear mirror group 8 and the second rear mirror group 9 are arranged in sequence along the second direction Y from the first turning element 6. The third rear mirror group 7 and the mounting base 3 can be fixedly connected by an adhesive, or can be fixedly connected by a buckle, a threaded connecting piece or other fixing methods known to those skilled in the art.

[0146] As shown in FIG. 3 to FIG. 5, the camera module 1 further comprises a second turning element 10, a filter 12 and an image sensor 11, wherein the second turning element 10 and the first turning element 6 are respectively arranged at two ends of the second light path, the first turning element 6 is located at the light entrance side of the second light path, and the second turning element 10 is located at the light exit side of the second light path. The second turning element 10 is an optical element capable of changing the direction of light propagation, for example, a mirror or an optical prism can be selected.

[0147] In the embodiment, the second turning element 10 is installed on the mounting base 3 and located between the third light path and the second light path; wherein the optical axis of the third light path is a third optical axis O3. The second turning element 10 is used to receive the light incident to the second turning element 10 along the second optical axis O2 from the second light path, and to turn the incident light into light emitted to the third light path along the third optical axis O3. The second turning element 10 can realize the function of connecting the third light path and the second light path with different connection optical axis directions.

[0148] The filter 12 and the image sensor 11 are arranged in the third light path, and the filter 12 is arranged at the light entrance side of the image sensor 14 and is used to selectively filter out the light entering the image sensor 11. For example, the filter 12 can filter out stray light that affects imaging to improve the imaging quality of the camera module 1. The image sensor 11 is used to convert the light emitted from the filter 12 into an electrical signal to realize the imaging function. The image sensor 11 can be a charge coupled device (CCD) or a complementary metal-oxide semiconductor (CMOS). The image sensor 11 can include a plurality of light sensing units (not shown in the figure), each of which converts the received light quantity into an electrical signal in a corresponding proportional relationship with the light quantity. The type of image sensor 11 is not limited in the embodiment.

[0149] In the camera module 1 provided in the embodiments of the present application, through the design of the second turning element 10, the included angle between the third optical axis O3 and the second optical axis O2 can be 30 degrees, 45 degrees, 60 degrees, 90 degrees, 120 degrees, 135 degrees, 225 degrees and 270 degrees, etc. The different included angles between the third optical axis O3 and the second optical axis O2 can change the mounting posture and mounting position of the image sensor 11, so as to adapt to different application scenarios.

[0150] For example, as shown in FIG. 5, the included angle between the third optical axis O3 and the second optical axis O2 is 135 degrees, and the image sensor 11 can be arranged obliquely relative to the first optical axis O1 and the second optical axis O2.

[0151] For another example, as shown in (a) of FIG. 12, the included angle between the third optical axis O3 and the second optical axis O2 is 90 degrees, and the image sensor 11 is arranged parallel to the second optical axis O2 and on the same side of the first front mirror group 4 in the first direction X.

[0152] For another example, as shown in (b) of FIG. 12, the included angle between the third optical axis O3 and the second optical axis O2 is 270 degrees, and the image sensor 11 is arranged parallel to the second optical axis O2 and on the different side of the first front mirror group 4 in the first direction X.

[0153] In some embodiments, as shown in FIG. 13, the camera module 1 can not be provided with the second turning element 10, and the image sensor 11 is opposite to the second optical path and is mounted on the mounting base 3 in a posture upright relative to the second optical axis O2.

[0154] As shown in FIG. 3, the camera module 1 further includes an optical image stabilizer (OIS) 19, which is mounted on the mounting base 3 and is located at the mounting position of the image sensor 11. The image sensor 11 is mounted in the optical image stabilizer 19. Through the arrangement of the optical image stabilizer 19, the camera module 1 can realize the effect of optical anti-shake, thereby being beneficial to improving the imaging quality.

[0155] In some embodiments, the optical image stabilizer 19 is mounted on the mounting base 3 and is located at the mounting position of the first turning element 6 or the second turning element 10 (if any). The first turning element 6 or the second turning element 10 is mounted in the optical image stabilizer 19. In this way, the camera module 1 can also realize the effect of optical anti-shake.

[0156] The camera module 1 provided in the embodiments of the present application can realize the functions of imaging in the first focal segment and the second focal segment; and by controlling the state switching of the first front mirror group 4, the focal segment switching of the camera module 1 between the first focal segment and the second focal segment, i.e., the zooming function, can be realized.

[0157] As shown in FIG. 14, when the first front mirror group 4 is in the first state, the external light enters the image sensor 11 after sequentially passing through the first front mirror group 4, the second front mirror group 5, the first turning element 6, the third rear mirror group 7, the first rear mirror group 8, the second rear mirror group 9 and the second turning element 10. When the first front mirror group 4 is in the second state, the external light enters the image sensor 11 after sequentially passing through the second front mirror group 5, the first turning element 6, the third rear mirror group 7, the first rear mirror group 8, the second rear mirror group 9 and the second turning element 10.

[0158] As can be seen, in the camera module 1 provided in the embodiments of the present application, by controlling the first front mirror group 4 to be in the first state and the second state, two optical imaging systems can be formed, which are the first optical imaging system and the second optical imaging system. The first optical imaging system includes the first front mirror group 4, the second front mirror group 5, the first turning element 6, the third rear mirror group 7, the first rear mirror group 8, the second rear mirror group 9 and the second turning element 10; and the second optical imaging system includes the second front mirror group 5, the first turning element 6, the third rear mirror group 7, the first rear mirror group 8, the second rear mirror group 9 and the second turning element 10.

[0159] The camera module 1 provided in the embodiments of the present application can realize the functions of imaging in the first focal segment and the second focal segment; and by controlling the state switching of the first front mirror group 4, the focal segment switching of the camera module 1 between the first focal segment and the second focal segment, i.e., the zooming function, can be realized.

[0160] In addition, in the camera module 1 provided in the embodiments of the present application, the first rear mirror group 8 and the second rear mirror group 9 in the second light path can cooperate with the first front mirror group 4 to realize the zooming function of the camera module 1 between the first focal segment and the second focal segment by moving along the second direction Y. In addition, when the camera module 1 is in the first focal segment, that is, when the first front mirror group 4 is in the first state, the focusing can be realized by controlling the movement of at least one of the first rear mirror group 8 and the second rear mirror group 9 along the second direction Y. When the camera module 1 is in the second focal segment, that is, when the first front mirror group 4 is in the second state, the focusing can be realized by controlling the movement of at least one of the first rear mirror group 8 and the second rear mirror group 9 along the second direction Y.

[0161] As can be seen from the above description, the camera module 1 provided in the embodiments of the present application can realize the switching between the first focal segment and the second focal segment, that is, the zooming function, by controlling the movement of the first front mirror group 4, the first rear mirror group 8 and the second rear mirror group 9 along the second direction Y. In addition, the focusing function can also be realized. Such design has the advantages of simple movement mode, easy structure implementation, and no need for light shielding mechanism.

[0162] In addition, the movement of the first front mirror group 4 along the second direction Y is at different heights (the height direction is parallel to the first direction X) from the movement of the rear mirror group along the second direction Y in the second light path, and the movement of the first front mirror group 4 will not occupy the space of the second light path. Such design is beneficial to increasing the design freedom of the rear mirror group in the second light path, for example, the number of the rear mirror group and the movement stroke in the second direction Y can be increased, thereby improving the optical performance of the camera module 1. On the other hand, on the basis of realizing the same zooming capability, the size of the module can be reduced, thereby realizing the miniaturization of the module.

[0163] In addition, when the first front mirror group 4 is switched between the first state and the second state, the movement is limited in the upper region of the first turning element 6 and the second light path, and such design will not increase the size of the camera module 1 in the second direction Y, thereby avoiding the problem that the size of the camera module 1 in the second direction Y is increased due to the movable design of the first front mirror group 4 in the second direction Y, and is beneficial to realizing the miniaturization of the camera module 1.

[0164] In the camera module 1 provided in the embodiments of the present application, as shown in FIG. 14, the first front mirror group 4 has positive refractive power, the first focal segment is a small zoom ratio, and the second focal segment is a large zoom ratio. For example, the first focal segment can be a 3.5X optical zoom focal segment, and the second focal segment can be a 6X optical zoom focal segment.

[0165] As can be seen from FIG. 14, when switching from the first focal length (3.5X) to the second focal length (6X), the first front lens group 4 switches from the first state to the second state, i.e. moves along the second direction Y from the first turning element 6 to the side where the second light path is located. Both the first rear lens group 8 and the second rear lens group 9 move along the second direction Y towards the side close to the first turning element 6.

[0166] When switching from the second focal length (6X) to the first focal length (3.5X), the first front lens group 4 switches from the second state to the first state, i.e. moves along the second direction Y from the second turning element 10 to the second turning element 10 on the side close to the second light path. Both the first rear lens group 8 and the second rear lens group 9 move along the second direction Y towards the side away from the first turning element 6.

[0167] In addition, when the camera module 1 is in the first focal length (3.5X) and the second focal length (6X), the focusing can be achieved by controlling at least one of the first rear lens group 8 and the second rear lens group 9 to move along the second direction Y.

[0168] As can be seen, by controlling the first front lens group 4, the first rear lens group 8 and the second rear lens group 9 to move along the second direction Y, the functions of the above-mentioned focal length switching (zooming) and focusing can be achieved. When the camera module 1 switches the focal length, the first rear lens group 8 and the second rear lens group 9 move along the second direction Y in the same direction, but in the opposite direction of the first front lens group 4.

[0169] In the present embodiment, the driving of the first front lens group 4, the first rear lens group 8 and the second rear lens group 9 to move along the second direction Y can be respectively achieved by the first driving device 16, the second driving device 17 and the third driving device 18 in the above-mentioned embodiments. However, the present application is not limited thereto, for example, by selecting a rear lens group for focusing, and by designing the movement stroke of the movable lens groups (the first front lens group 4, the first rear lens group 8 and the second rear lens group 9) when switching the focal length, the reverse linkage of the front lens group and the rear lens group can be achieved, so that the effect of shared driving can be achieved.

[0170] For the convenience of description and illustration, the movement strokes of the first front lens group 4, the first rear lens group 8 and the second rear lens group 9 when the camera module 1 switches the focal length between the first focal length and the second focal length are respectively referred to as the first stroke, the second stroke and the third stroke.

[0171] In some embodiments, the second rear mirror group 9 is used to realize focusing of the camera module 1 in the first focal segment and the second focal segment; and when the focal segment is switched, the first stroke (the movement stroke of the first front mirror group 4) and the second stroke (the movement stroke of the first rear mirror group 8) are equal. In this case, the first driving device 16 has two driving ends moving towards different sides along the second direction Y, and the two driving ends are connected with the first bearing frame 13 and the second bearing frame 14 respectively.

[0172] In some embodiments, as shown in FIG. 15, the first driving device 16 (which can also be regarded as the second driving device 17) is mounted on the mounting base 3 and includes a driving device body and a reverse linkage mechanism; wherein the driving device body can be a piezoelectric motor, a voice coil motor, a linear motor or other linear driving device, and can also be a combined linear driving device. The driving device body has a driving end moving along the second direction Y, which is the main driving end 23 of the first driving device 16. The main driving end 23 further includes a first rack structure extending along the second direction Y.

[0173] The reverse linkage mechanism includes an intermediate gear 22 and a slave driving end 24. The intermediate gear 22 is rotatably arranged on the mounting base 3 about an intermediate axis perpendicular to the second direction Y. For example, the intermediate axis of the intermediate gear 22 is parallel to the third direction Z. The slave driving end 24 has a second rack structure extending along the second direction Y.

[0174] The main driving end 23 and the slave driving end 24 are located on both sides of the intermediate axis of the intermediate gear 22, and the first rack structure and the second rack structure are engaged with the intermediate gear 22 on different sides of the intermediate axis of the intermediate gear 22.

[0175] One of the main driving end 23 and the slave driving end 24 of the first driving device 16 is connected with the first bearing frame 13, and the other is connected with the second bearing frame 14. For example, as shown in FIG. 15, the main driving end 23 is connected with the second bearing frame 14, and the slave driving end 24 is connected with the first bearing frame 13.

[0176] In operation, the driving device body drives the main driving end 23 and the second bearing frame 14 to move towards one side along the second direction Y, while through the cooperation of the first rack structure, the intermediate gear 22 and the second rack structure, the slave driving end 24 is driven to move towards the side opposite to the main driving end 23 along the second direction Y; the first bearing frame 13 is driven by the slave driving end 24 to move towards the side opposite to the second bearing frame 14 along the second direction Y. That is, under the driving action of the first driving device 16, the first bearing frame 13 and the second bearing frame 14 can move towards different sides along the second direction Y.

[0177] It can be seen that the first driving device 16 with the above design can realize the reverse linkage of the first front mirror group 4 and the first rear mirror group 8, thereby facilitating to ensure the synchronization of the reverse movement of the first front mirror group 4 and the first rear mirror group 8 and the accuracy of the relative position; and the movement of the first front mirror group 4 and the first rear mirror group 8 driven by one driving device can realize common driving, simplify the structure and reduce the cost.

[0178] In some other embodiments, as shown in FIG. 16, the first driving device 16 (which can also be regarded as the second driving device 17) is mounted on the mounting base 3 and includes a driving device body and a reverse linkage mechanism; wherein the driving device body can be a piezoelectric motor, a voice coil motor, a linear motor or the like linear driving device, or a combined linear driving device. The driving device body has a driving end moving along the second direction Y, which is the main driving end of the first driving device 16.

[0179] The reverse linkage mechanism includes two belt pulleys 26 oppositely arranged along the second direction Y, and the central axes of the two belt pulleys 26 are parallel and both perpendicular to the second direction Y. For example, the central axes of the two belt pulleys 26 are both parallel to the third direction Z. The reverse linkage mechanism further includes a transmission belt 25 sleeved on the two belt pulleys 26, and the transmission belt 25 includes a first belt portion and a second belt portion located on both sides of the two belt pulleys 26, and the first belt portion and the second belt portion both extend parallel to the second direction Y. The second belt portion is the slave driving end of the first driving device 16.

[0180] One of the main driving end and the slave driving end (the second belt portion) is connected with the first carrier 13, and the other is connected with the second carrier 14. For example, as shown in FIG. 16, the main driving end is connected with the second carrier 14, and the slave driving end (the second belt portion) is connected with the first carrier 13.

[0181] In work, the driving device body drives the second carrier 14 and the first belt portion to move along the second direction Y towards one side through the main driving end, and the first belt portion drives the second belt portion (the slave driving end) to move along the second direction Y towards the side opposite to the main driving end through the cooperation of the transmission belt 25 and the two belt pulleys 26; the second belt portion (the slave driving end) drives the first carrier 13 to move along the second direction Y towards the side opposite to the second carrier 14. That is, under the driving action of the first driving device 16, the first carrier 13 and the second carrier 14 can move along the second direction Y towards different sides.

[0182] Therefore, the first driving device 16 with the above design can realize the reverse linkage of the first front lens group 4 and the first rear lens group 8, thereby facilitating the synchronization of the reverse movement of the first front lens group 4 and the first rear lens group 8 and the accuracy of the relative position, and the movement of the first front lens group 4 and the first rear lens group 8 driven by one driving device can realize common driving, simplify the structure and reduce the cost.

[0183] In some embodiments, the first rear lens group 8 is used to realize the focusing of the camera module 1 in the first focal segment and the second focal segment, and the first stroke (the movement stroke of the first front lens group 4) and the third stroke (the movement stroke of the second rear lens group 9) are the same when the focal segment switching is performed. In this case, the reverse linkage of the first front lens group 4 and the second rear lens group 9 can be realized by referring to the design of the reverse linkage of the first front lens group 4 and the first rear lens group 8, and the specific scheme is not described here again.

[0184] The embodiments of the present application also provide another camera module 1, in which, as shown in FIG. 17, the first front lens group 4 has a negative focal length, the first focal segment is a large zoom ratio, and the second focal segment is a small zoom ratio. For example, the first focal segment can be a 10X optical zoom (10X) focal segment, and the second focal segment can be a 5X optical zoom (5X) focal segment.

[0185] When switching from the first focal segment (10X) to the second focal segment (5X), the first front lens group 4 switches from the first state to the second state, that is, moves along the second direction Y from the first turning element 6 to the side where the second optical path is located. The first rear lens group 8 and the second rear lens group 9 both move along the second direction Y to the side away from the first turning element 6.

[0186] When switching from the second focal segment (5X) to the first focal segment (10X), the first front lens group 4 switches from the second state to the first state, that is, moves along the second direction Y from the second turning element 10 to the second turning element 10 on the side close to the second optical path. The first rear lens group 8 and the second rear lens group 9 both move along the second direction Y to the side close to the first turning element 6.

[0187] In addition, when the camera module 1 is in the first focal segment (10X) and the second focal segment (5X), the focusing can be realized by controlling at least one of the first rear lens group 8 and the second rear lens group 9 to move along the second direction Y.

[0188] Therefore, by controlling the movement of the first front lens group 4, the first rear lens group 8 and the second rear lens group 9 along the second direction Y, the functions of the above focal segment switching (zooming) and focusing can be realized. Moreover, when the camera module 1 performs the focal segment switching, the movement directions of the first rear lens group 8 and the second rear lens group 9 in the second direction Y are the same as the movement direction of the first front lens in the second direction Y.

[0189] In the embodiment, the movement of the first front lens group 4, the first rear lens group 8 and the second rear lens group 9 in the second direction Y can be respectively driven by the first driving device 16, the second driving device 17 and the third driving device 18 in the above embodiment. However, the embodiments of the present application are not limited thereto. For example, the rear lens group used for focusing can be selected, and the movement of the movable lens groups (the first front lens group 4, the first rear lens group 8 and the second rear lens group 9) in the focal length switching stroke can be designed to realize the linkage between different lens groups and the effect of sharing the driving.

[0190] In some embodiments, the second rear lens group 9 is used to realize the focusing of the camera module 1 in the first focal length and the second focal length; and the first stroke (the movement stroke of the first front lens group 4) and the second stroke (the movement stroke of the first rear lens group 8) are equal when the focal length switching is performed. In this case, as shown in FIG. 18, the first carrier 13 and the second carrier 14 are connected, and the first driving device 16 and the second driving device 17 are shared, that is, only one is provided. The shared driving device can be considered as the first driving device 16 or the second driving device 17.

[0191] Taking the shared driving device as the first driving device 16 and omitting the second driving device 17 as an example. As shown in FIG. 18, the driving end in the first driving device 16 is connected with the first carrier 13, and the first carrier 13 is connected with the second carrier 14. In operation, the first driving device 16 drives the first carrier 13 to move in the second direction Y, and simultaneously drives the second carrier 14 to move synchronously by using the first carrier 13; so as to realize the purpose of driving the first front lens group 4 and the first rear lens group 8 to move together. By using the above design, the purposes of reducing the driving, simplifying the structure and reducing the cost can be realized; and the normal functions such as the focal length switching and the focusing of the camera module 1 are not affected.

[0192] In other embodiments, the first rear lens group 8 is used to realize the focusing of the camera module 1 in the first focal length and the second focal length; and the first stroke (the movement stroke of the first front lens group 4) and the third stroke (the movement stroke of the second rear lens group 9) are equal when the focal length switching is performed. In this case, as shown in FIG. 19, the first carrier 13 and the third carrier 15 are connected, and the first driving device 16 and the third driving device 18 are shared, that is, only one is provided. The shared driving device can be considered as the first driving device 16 or the third driving device 18.

[0193] Take the first driving device 16 as the common driving device and omit the third driving device 18 as an example. As shown in FIG. 19, the driving end of the first driving device 16 is connected with the third carrier 15, and the first carrier 13 is connected with the third carrier 15. In operation, the first driving device 16 drives the third carrier 15 to move along the second direction Y, and at the same time, the third carrier 15 drives the first carrier 13 to move synchronously, so as to realize the purpose of driving the first front mirror group 4 and the second rear mirror group 9 to move together. By using the above design, the purposes of reducing driving, simplifying structure and reducing cost can be achieved; and the normal functions of the camera module 1 such as focal length switching and focusing are not affected.

[0194] In some other embodiments, the second rear mirror group 9 is used to realize focusing of the camera module 1 in the first focal length and the second focal length; and when the focal length is switched, the first stroke (the movement stroke of the first front mirror group 4) is greater than the second stroke (the movement stroke of the first rear mirror group 8). In this case, the first driving device 16 and the second driving device 17 can adopt the combination of "large stroke + small stroke".

[0195] As shown in FIG. 20, the second driving device 17 is arranged on the mounting base 3, and the driving end is connected with the second carrier 14. The first driving device 16 is arranged on the second carrier 14, and the driving end is connected with the first carrier 13. The driving stroke of the second driving device 17 is the second stroke, the driving stroke of the first driving device 16 is the fourth stroke, and the fourth stroke is the stroke difference between the first stroke and the second stroke.

[0196] In operation, as shown in FIGS. 20 and 21, the second driving device 17 can drive the second carrier 14 to move along the second direction Y. Since the first driving device 16 is arranged on the second carrier 14, the second carrier 14 can drive the first driving device 16 and the first carrier 13 to move synchronously along the second direction Y, and the movement strokes are both the second stroke.

[0197] It should be noted that in order to enable the first driving device 16 to drive the first carrier 13 to realize the same movement stroke (the second stroke) as the second carrier 14 when the second driving device 17 drives the first driving device 16 through the second carrier 14, the first driving device 16 and the first carrier 13 need to maintain a relatively fixed positional relationship. Therefore, the first driving device 16 needs to have a self-locking function when it is not working. For different first driving devices 16, the implementation of self-locking can be different. For example, a piezoelectric motor can realize self-locking through its own structure, and a voice coil motor needs to be powered to realize self-locking; for other types of driving devices, self-locking can also be realized through mechanical structure.

[0198] Please continue to refer to FIG. 20 and FIG. 21, when the second carrier 14, the first driving device 16 and the first carrier 13 move to the end position of the second stroke in the second direction Y, the second driving device 17 stops driving. The first driving device 16 continues to drive the first carrier 13 to move in the second direction Y, and the movement stroke is the fourth stroke. When the first carrier 13 moves to the end position of the fourth stroke in the second direction Y, the total movement stroke of the first carrier 13 in the second direction Y is the first stroke (the sum of the second stroke and the fourth stroke); the movement stroke of the second carrier 14 in the second direction Y is the second stroke. The movement stroke of the first front lens group 4 in the second direction Y driven by the first carrier 13 is the first stroke, and the movement stroke of the first rear lens group 8 in the second direction Y driven by the second carrier 14 is the second stroke.

[0199] In the above working process, in order to facilitate understanding, the second driving device 17 and the first driving device 16 are described and explained in sequence. However, in some scenarios, the second driving device 17 and the first driving device 16 can work at the same time, so as to shorten the movement time of the first front lens group 4. In some scenarios, the first driving device 16 can work first, and the second driving device 17 can work later.

[0200] As can be seen from the above description, in the camera module 1 provided in the embodiment, through the cooperation of the first driving device 16 and the second driving device 17, the purpose of driving the first rear lens group 8 and the first front lens group 4 with different movement strokes can be achieved, without affecting the normal functions such as focal length switching and focusing of the camera module 1. Moreover, since the driving stroke of the first driving device 16 is only the stroke difference between the first stroke and the second stroke, the requirements for the first driving device 16 can be reduced, which is conducive to reducing the cost.

[0201] In the case where the first stroke (the movement stroke of the first front lens group 4) is smaller than the second stroke (the movement stroke of the first rear lens group 8) during focal length switching, the first driving device 16 and the second driving device 17 can also adopt the cooperation of "large stroke + small stroke". The first driving device 16 is arranged on the mounting base 3, and the driving end is connected with the first carrier 13. The second driving device 17 is arranged on the first carrier 13, and the driving end is connected with the second carrier 14. The driving stroke of the first driving device 16 is the first stroke, and the driving stroke of the second driving device 17 is the stroke difference between the second stroke and the first stroke. In this embodiment, the working principle, working process and technical effects that can be achieved can be referred to the description of the above scheme where the first stroke is larger than the second stroke, and will not be described here.

[0202] In some other embodiments, the second rear mirror group 9 is used to realize focusing of the camera module 1 in the first focal segment and the second focal segment; and the first stroke (the movement stroke of the first front mirror group 4) is greater than the second stroke (the movement stroke of the first rear mirror group 8) when the focal segment is switched. In this case, as shown in FIG. 22, the first driving device 16 (which can also be considered as the second driving device 17) is installed on the mounting base 3, and the driving stroke is the first stroke. The driving end in the first driving device 16 is connected with the first carrier 13.

[0203] The second carrier 14 is provided with a buffer groove 27 extending along the second direction Y, and the buffer groove 27 includes two action groove walls oppositely arranged in the second direction Y. For the convenience of description, the two sides along the second direction Y are respectively referred to as the first side and the second side; as shown in FIG. 23, the two action groove walls in the buffer groove 27 are respectively a first groove wall 271 close to the first side, and a second groove wall 272 close to the second side.

[0204] The first carrier 13 is provided with a connecting shaft 28 extending into the buffer groove 27. Please continue to refer to FIG. 23, the connecting shaft 28 can move in the second direction Y in the buffer groove 27, and the first groove wall 271 in the buffer groove 27 is used to limit the movement position of the connecting shaft 28 in the second direction Y towards the first side in the buffer groove 27, and the second groove wall 272 is used to limit the movement position of the connecting shaft 28 in the second direction Y towards the second side in the buffer groove 27; that is, the two action groove walls in the buffer groove 27 are used to limit the movement range of the connecting shaft 28 in the second direction Y in the buffer groove 27. The movable distance of the connecting shaft 28 in the second direction Y in the buffer groove 27 is the stroke difference between the first stroke and the second stroke.

[0205] In operation, as shown in FIGS. 22-24, taking the example that the first driving device 16 drives the first carrier 13 to move in the second direction Y from the starting position close to the first side to the ending position close to the second side with the first stroke, the initial state of the connecting shaft 28 in the buffer groove 27 is in contact with the first groove wall 271. The first driving device 16 drives the first carrier 13 to move in the second direction Y, and in the initial stage of this process, the connecting shaft 28 moves in the second direction Y in the buffer groove 27 from the first groove wall 271 to the second groove wall 272, and the second carrier 14 does not move.

[0206] When the connecting shaft 28 moves in the buffer groove 27 to the position where the second groove wall 272 is contacted, the movement stroke of the first carrier 13 along the second direction Y is the stroke difference between the first stroke and the second stroke. Next, the first driving device 16 drives the first carrier 13 to continue moving along the second direction Y, in the process, the first carrier 13 drives the second carrier 14 to move together due to the matching relationship between the connecting shaft 28 and the buffer groove 27. When the first carrier 13 moves to the end position close to the second side of the first stroke along the second direction Y, the first driving device 16 stops working. At this time, the movement stroke of the first carrier 13 is the first stroke, and the movement stroke of the second carrier 14 is the second stroke. Under the driving of the first carrier 13 and the second carrier 14, the movement stroke of the first front lens group 4 is the first stroke, and the movement stroke of the first rear lens group 8 is the second stroke.

[0207] In some embodiments, the first carrier 13 is provided with a buffer groove 27 extending along the second direction Y, and the second carrier 14 is provided with a connecting shaft 28 extending into the buffer groove 27; the connecting shaft 28 and the buffer groove 27 can adopt the same structure as in the above embodiments, which will not be described here.

[0208] In operation, as shown in FIG. 25, taking the example that the first driving device 16 drives the first carrier 13 to move along the second direction Y from the start position close to the first side of the first stroke to the end position close to the second side, the initial state of the connecting shaft 28 in the buffer groove 27 is that the second groove wall 272 is contacted. The first driving device 16 drives the first carrier 13 to move along the second direction Y, and in the initial stage of the process, the buffer groove 27 moves along the second direction Y relative to the connecting shaft 28, that is, the connecting shaft 28 moves in the buffer groove 27 along the second direction Y from the second groove wall 272 to the first groove wall 271, and the second carrier 14 does not move.

[0209] When the buffer groove 27 moves to the position where the first groove wall 271 is contacted with the connecting shaft 28, the movement stroke of the first carrier 13 along the second direction Y is the stroke difference between the first stroke and the second stroke. Next, the first driving device 16 drives the first carrier 13 to continue moving along the second direction Y, in the process, the first carrier 13 drives the second carrier 14 to move together due to the matching relationship between the connecting shaft 28 and the buffer groove 27. When the first carrier 13 moves to the end position close to the second side of the first stroke along the second direction Y, the first driving device 16 stops working. At this time, the movement stroke of the first carrier 13 is the first stroke, and the movement stroke of the second carrier 14 is the second stroke. Under the driving of the first carrier 13 and the second carrier 14, the movement stroke of the first front lens group 4 is the first stroke, and the movement stroke of the first rear lens group 8 is the second stroke.

[0210] As can be seen from the above description, in the camera module 1 provided in the embodiment, by arranging the connecting shaft 28 and the buffer groove 27, and by utilizing the matching characteristics of the connecting shaft 28 and the buffer groove 27, the purpose of driving the first rear mirror group 8 and the first front mirror group 4 to move with different movement strokes by one driving device (the first driving device 16) can be achieved, without affecting the normal functions of the camera module 1 such as the focal length switching and focusing, so that the purposes of reducing driving, simplifying structure and reducing cost can be achieved.

[0211] In some embodiments, the mounting base 3 is further provided with a magnetic attraction structure for attracting and fixing the second carrier 14 at the starting position and / or the ending position of the second stroke; so that in the scheme of using the buffer groove 27, the second carrier 14 can be ensured to be in a fixed state.

[0212] In some other embodiments, the second rear mirror group 9 is used to realize the focusing of the camera module 1 in the first focal length range and the second focal length range; and when the focal length is switched, the first stroke (the movement stroke of the first front mirror group 4) is smaller than the second stroke (the movement stroke of the first rear mirror group 8). In this case, the first driving device 16 (which can also be regarded as the second driving device 17) is mounted on the mounting base 3, and the driving stroke is the second stroke. The driving end in the first driving device 16 is connected with the second carrier 14. The first carrier 13 and the second carrier 14 are connected by the matching of the buffer groove 27 and the connecting shaft 28. By using the above scheme, the purpose of driving the first rear mirror group 8 and the first front mirror group 4 to move with different movement strokes by one driving device (the first driving device 16) can be achieved; the working principle, working process and technical effects that can be achieved can be referred to the description of the case where the first stroke is greater than the second stroke, which will not be described here.

[0213] In some embodiments, the mounting base 3 is further provided with a magnetic attraction structure for attracting and fixing the first carrier 13 at the starting position and / or the ending position of the first stroke; so that in the scheme of using the buffer groove 27, the first carrier 13 can be ensured to be in a fixed state.

[0214] In the above some embodiments, the second rear mirror group 9 is used to realize the focusing of the camera module 1 in the first focal length range and the second focal length range, and the schemes are exemplarily described. However, the embodiments of the present application are not limited thereto, for example, in some embodiments, the first rear mirror group 8 can be used to realize the focusing of the camera module 1 in the first focal length range and the second focal length range; in this case, the schemes in the above embodiments can be adaptively adjusted to realize the design of sharing the driving device.

[0215] The embodiment of the application also provides another camera module 1, as shown in FIG. 26. The camera module 1 is different from the above embodiment in that the second front lens group 5 is also a movable lens group that can move along the second direction Y relative to the mounting base 3. The second front lens group 5 has a third state and a fourth state during movement along the second direction Y. The second front lens group 5 in the third state is in the first light path and participates in optical imaging of the camera module 1; the second front lens group 5 in the fourth state is out of the first light path and does not participate in optical imaging of the camera module 1.

[0216] As described above, through cooperation of different states of the first front lens group 4 and the second front lens group 5, the camera module 1 can realize imaging effects at four different focal lengths (for example, the first focal length, the second focal length, the third focal length and the fourth focal length in FIG. 26), and the zoom range is larger.

[0217] The embodiment of the application also provides another camera module 1. The camera module 1 is different from the above embodiment in that the front lens group assembly 20 can include one or more front lens groups; and / or the rear lens group assembly 21 can include two or more rear lens groups. For example, the rear lens group assembly 21 can include 2, 3 or 4 rear lens groups. When the number of lens groups changes, the number of movable lens groups and fixed lens groups can also be adaptively adjusted. By changing the number of lens groups in the camera module 1, different optical designs can be adapted to; and different shooting scenes can be realized.

[0218] In this article, a lens group, for example, a front lens group and a rear lens group, refers to an optical device including a lens barrel and a lens, and the lens is integrated in the lens barrel; each lens group can include one lens, two lenses or multiple lenses.

[0219] The above merely provides a specific implementation of the application, but the protection scope of the application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the application, which should be covered in the protection scope of the application. Therefore, the protection scope of the application should be subject to the protection scope of the claims.

Claims

1. A camera module, comprising: The camera module comprises: a mounting base; a first turning element mounted on the mounting base and located between a first light path and a second light path; the optical axes of the first light path and the second light path are parallel to a first direction and a second direction respectively, the first direction and the second direction are perpendicular; the first turning element is used for receiving light rays incident along the first direction from the first light path and turning the light rays to be emitted along the second direction to the second light path; a front lens group assembly comprising a first carrier and a first front lens group; the first carrier is used for carrying the first front lens group and can move along the second direction relative to the mounting base; the first front lens group has a first state and a second state during movement with the first carrier; the first front lens group in the first state is located in the first light path, and the first front lens group in the second state is out of the first light path; a rear lens group assembly comprising at least two rear lens groups arranged along the second direction in the second light path; and an image sensor located on the light exit side of the second light path and used for photoelectric conversion of light rays emitted from the second light path; wherein, when the first front lens group is in the first state and the second state respectively, the focal length of the camera module is a first focal length and a second focal length respectively, and the first focal length and the second focal length are different.

2. The camera module of claim 1, wherein, The rear lens group in the rear lens group assembly comprises a first rear lens group, and the rear lens group assembly further comprises a second carrier; the second carrier is used for carrying the first rear lens group and can move along the second direction relative to the mounting base.

3. The camera module of claim 2, wherein, When the camera module switches the focal length between the first focal length and the second focal length, the first front lens group and the first rear lens group move along the second direction towards the same side; the movement stroke of the first front lens group is a first stroke, the movement stroke of the first rear lens group is a second stroke, and the first stroke is greater than the second stroke; the camera module further comprises a first driving device and a second driving device; the second driving device is arranged on the mounting base and connected with the second carrier at a driving end; the first driving device is arranged on the second carrier and connected with the first carrier at a driving end; the second driving device is used for driving the second carrier to move along the second direction relative to the mounting base, and the second carrier drives the first rear lens group, the first driving device, the first carrier and the first front lens group to move together; the first driving device is used for driving the first carrier to move along the second direction relative to the second carrier; the driving stroke of the second driving device is equal to the second stroke, and the driving stroke of the first driving device is the stroke difference between the first stroke and the second stroke.

4. The camera module of claim 2, wherein, When the camera module switches between the first focal length and the second focal length, the first front lens group and the first rear lens group move towards the same side along the second direction; a movement stroke of the first front lens group is a first stroke, a movement stroke of the first rear lens group is a second stroke, and the first stroke is smaller than the second stroke; The camera module further comprises a first driving device and a second driving device, the first driving device is arranged on the mounting base and connected with the first bearing frame at a driving end, and the second driving device is arranged on the first bearing frame and connected with the second bearing frame at a driving end; The first driving device is configured to drive the first bearing frame to move relative to the mounting base along the second direction, and the first bearing frame drives the first front lens group, the second driving device, the second bearing frame and the first rear lens group to move together; The second driving device is configured to drive the second bearing frame to move relative to the first bearing frame along the second direction; A driving stroke of the first driving device is equal to the first stroke, and a driving stroke of the second driving device is equal to a stroke difference between the second stroke and the first stroke.

5. The camera module of claim 2, wherein, The camera module further comprises a first driving device and a second driving device, the first driving device is arranged on the mounting base and connected with the first bearing frame at a driving end, and the second driving device is arranged on the mounting base and connected with the second bearing frame at a driving end; The first driving device is configured to drive the first bearing frame to move relative to the second bearing frame along the second direction; The second driving device is configured to drive the second bearing frame to move relative to the mounting base along the second direction; In the third direction, the first driving device and the second driving device are arranged on two sides of the first turning element; The first direction, the second direction and the third direction are perpendicular to each other.

6. The camera module of claim 2, wherein, The camera module further comprises a first driving device, and the first driving device is configured to drive the first bearing frame and the second bearing frame to move relative to the mounting base along the second direction.

7. The camera module of claim 6, wherein, When the camera module switches between the first focal length and the second focal length, the first front lens group and the first rear lens group move towards the same side along the second direction; a movement stroke of the first front lens group is a first stroke, a movement stroke of the first rear lens group is a second stroke, and the first stroke is greater than the second stroke; The first driving device is mounted on the mounting base and connected with the first bearing frame at a driving end, and a driving stroke of the first driving device is equal to the first stroke; One of the first bearing frame and the second bearing frame is provided with a buffer groove, and the other is provided with a connecting shaft extending into the buffer groove; The buffer groove comprises two action groove walls arranged opposite to each other in the second direction, and the two action groove walls are configured to limit a movement range of the connecting shaft in the buffer groove along the second direction; The movable distance of the connecting shaft in the second direction in the buffer groove is the stroke difference between the first stroke and the second stroke.

8. The camera module of claim 7, wherein, A magnetic attraction structure is arranged on the mounting base, and is used for adsorbing and fixing the second carrier at the starting position and / or the terminal position of the second stroke.

9. The camera module of claim 6, wherein, When the camera module switches between the first focal segment and the second focal segment, the first front mirror group and the first rear mirror group move towards the same side in the second direction; the movement stroke of the first front mirror group is a first stroke, the movement stroke of the first rear mirror group is a second stroke, and the first stroke is smaller than the second stroke. The first driving device is mounted on the mounting base, and a driving end is connected with the second carrier; the driving stroke of the first driving device is equal to the second stroke. One of the first carrier and the second carrier is provided with a buffer groove, and the other is provided with a connecting shaft extending into the buffer groove. The buffer groove comprises two action groove walls oppositely arranged in the second direction, and the two action groove walls are used for limiting the movement range of the connecting shaft in the second direction in the buffer groove. The movable distance of the connecting shaft in the second direction in the buffer groove is the stroke difference between the second stroke and the first stroke.

10. The camera module of claim 9, wherein, A magnetic attraction structure is arranged on the mounting base, and is used for adsorbing and fixing the first carrier at the starting position and / or the terminal position of the first stroke.

11. The camera module of claim 6, wherein, When the camera module switches between the first focal segment and the second focal segment, the first front mirror group and the first rear mirror group move towards different sides in the second direction; the movement stroke of the first front mirror group is a first stroke, the movement stroke of the first rear mirror group is a second stroke, and the first stroke is equal to the second stroke. The first driving device has two driving ends moving towards different sides in the second direction, and the two driving ends are respectively connected with the first carrier and the second carrier.

12. The camera module of claim 11, wherein, The first driving device is mounted on the mounting base, and comprises a driving device body and a reverse linkage mechanism. The driving device body has a main driving end moving in the second direction, and the main driving end further comprises a first rack structure extending in the second direction. The reverse linkage mechanism comprises an intermediate gear and a slave driving end, and the intermediate gear is rotatably arranged on the mounting base about a middle axis perpendicular to the second direction. The slave driving end has a second rack structure extending in the second direction. The first rack structure and the second rack structure are respectively arranged on the two sides of the middle axis of the intermediate gear, and are both meshed with the intermediate gear. One of the main driving end and the slave driving end is connected with the first carrier, and the other is connected with the second carrier.

13. The camera module of claim 11, wherein, The first driving device is mounted on the mounting base, and comprises a driving device body and a reverse linkage mechanism. The driving device body has a main driving end moving in the second direction. The reverse linkage mechanism comprises two belt pulleys arranged oppositely and a transmission belt sleeved outside the two belt pulleys; the central axis of the belt pulley is perpendicular to the second direction, and the part of the transmission belt on one side of the two belt pulleys is connected with the main driving end, and the part on the other side is the driven end. One of the main driving end and the driven end is connected with the first carrier, and the other is connected with the second carrier.

14. The camera module according to any one of claims 2 to 13, wherein, In the second direction, the rear lens group in the second state of the first front lens group and the rear lens group assembly is located on the same side of the first turning element.

15. The camera module of claim 14, wherein, The first front lens group has positive focal power, and when the camera module switches between the first focal length and the second focal length, the first front lens group and the first rear lens group move towards different sides along the second direction; the first focal length is small zoom ratio, and the second focal length is large zoom ratio. Alternatively, the first front lens group has negative focal power, and when the camera module switches between the first focal length and the second focal length, the first front lens group and the first rear lens group move towards the same side along the second direction; the first focal length is large zoom ratio, and the second focal length is small zoom ratio.

16. The camera module according to any one of claims 2 to 15, wherein, The mounting base is provided with a first sliding structure and a third sliding structure extending along the second direction; The first carrier has a second sliding structure in sliding cooperation with the first sliding structure; The second carrier has a fourth sliding structure in sliding cooperation with the third sliding structure.

17. The camera module of claim 16, wherein, The first sliding structure is a slide rod, and the second sliding structure is a sliding groove or a sliding hole in sliding cooperation with the slide rod; Alternatively, the first sliding structure is a sliding groove, and the second sliding structure is a sliding protrusion in sliding cooperation with the sliding groove.

18. The camera module of claim 16 or 17, wherein, The first sliding structure and the third sliding structure are the same sliding structure, and the first carrier and the second carrier are slidingly arranged on the same sliding structure.

19. The camera module of any one of claims 1-18, wherein, The front lens group assembly comprises a second front lens group, which is fixedly arranged in the first optical path; Alternatively, the front lens group assembly comprises a fourth carrier and a second front lens group; the fourth carrier is used for carrying the second front lens group and can move along the second direction relative to the mounting base; the second front lens group has a third state and a fourth state during movement with the fourth carrier; the second front lens group in the third state is located in the first optical path, and the second front lens group in the fourth state is out of the first optical path.

20. The camera module of any one of claims 1-19, wherein, The rear lens group in the rear lens group assembly comprises a second rear lens group; The rear lens group assembly further comprises a third carrier, which is used for carrying the second rear lens group and can move along the second direction relative to the mounting base.

21. The camera module of any one of claims 1-20, wherein, The rear lens group assembly comprises 2, 3 or 4 rear lens groups.

22. The camera module of any one of claims 3-15, wherein, The first driving device comprises a piezoelectric motor or a voice coil motor.

23. The camera module of any one of claims 3-15, wherein, The first driving device comprises a rotary motor and a transmission mechanism connected with the rotary motor for converting the rotary motion of the rotary motor into linear motion; the linear motion part in the transmission mechanism is used for driving the first bearing frame.

24. The camera module of any one of claims 1-23, wherein, The camera module further comprises an optical image stabilizer, the first turning element or the image sensor is mounted on the mounting base through the optical image stabilizer.

25. The camera module of any one of claims 1-24, wherein, The camera module further comprises a second turning element, the second turning element and the first turning element are arranged at two ends of the second optical path; The second turning element is used for connecting the second optical path and a third optical path, and the image sensor is in the third optical path.

26. The camera module of claim 25, wherein, The camera module further comprises an optical image stabilizer, the first turning element, the second turning element or the image sensor is mounted on the mounting base through the optical image stabilizer.

27. An electronic device, comprising: The electronic device comprises: a housing; and The camera module as claimed in any one of claims 1 to 26 is arranged in the housing.

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