Camera module and electronic equipment

Abstract

The embodiment of the invention provides a camera module and electronic equipment, relates to the technical field of camera shooting, and is used for solving the problems that a long-stroke zoom camera is low in precision and large in size. The camera module comprises a base, a first lens group assembly, a second lens group assembly, a first piezoelectric driver and a second piezoelectric driver. Macroscopic displacement generated by microscopic vibration of the first piezoelectric actuator drives the first lens group assembly to move in the first direction, macroscopic displacement generated by microscopic vibration of the second piezoelectric actuator drives the second lens group assembly to move in the first direction, and the purposes of zooming and automatic focusing are achieved. A voice coil motor does not need to be arranged in the camera module, so that the problems of relatively low control precision and relatively large product size can be relieved.

Description

[0001] This application claims priority to Chinese Patent Application No. 202411346766.5, filed with the State Intellectual Property Office of China on September 25, 2024, entitled "A Camera Module, Electronic Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of camera technology, and more particularly to a camera module and electronic device. Background Technology

[0003] With the continuous development of electronic device integration technology, taking photos and videos has become one of the most common functions of electronic devices, leading to the increasingly widespread application of cameras in electronic devices. Cameras with zoom and autofocus capabilities can achieve both long-range shooting and wide-angle shooting at close focal lengths, thus meeting users' shooting needs in various scenarios. To achieve zoom and autofocus functions, cameras incorporate multiple voice coil motors that drive the movement of multiple lens groups. However, as the number of lens groups increases, the number of voice coil motors also increases accordingly, resulting in long-stroke zoom cameras exhibiting problems such as low accuracy and large size. Summary of the Invention

[0004] This application provides a camera module and electronic device to solve the problems of low accuracy and large size of long-stroke zoom cameras.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] One aspect of this application provides a camera module. The camera module includes a base, a first lens assembly, a second lens assembly, a first piezoelectric actuator, and a second piezoelectric actuator. The first lens assembly is movably connected to the base along a first direction, and the optical axis of the first lens assembly is parallel to the first direction. The first and second lens assemblies are arranged sequentially along the first direction, and the second lens assembly is movably connected to the base along the first direction, with its optical axis parallel to the first direction. A portion of the first piezoelectric actuator (e.g., a fixed portion) is connected to the base, and another portion of the first piezoelectric actuator (e.g., a movable portion) is connected to the first lens assembly. The first piezoelectric actuator is used to drive the first lens assembly to move along the first direction. A portion of the second piezoelectric actuator (e.g., a fixed portion) is connected to the base, and another portion of the second piezoelectric actuator (e.g., a movable portion) is connected to the second lens assembly. The second piezoelectric actuator is used to drive the second lens assembly to move along the first direction.

[0007] In summary, since another part of the first piezoelectric actuator (e.g., the part that is a moving member) is connected to the base, and another part of the first piezoelectric actuator (e.g., the part that is a moving member) is connected to the first lens assembly, the macroscopic displacement generated by the microscopic vibration of the first piezoelectric actuator can be transmitted to the first lens assembly to drive the first lens assembly to slide along the first direction, thereby allowing the first lens assembly to move along its optical axis. Similarly, the macroscopic displacement generated by the microscopic vibration of the second piezoelectric actuator can be transmitted to the second lens assembly to drive the second lens assembly to move along its optical axis. By controlling the vibration patterns of the first and second piezoelectric actuators, the stroke of the first and second lens assemblies can be controlled, thereby achieving zoom and autofocus. As can be seen from the above, the camera module provided in this application can drive different lens assemblies through different piezoelectric actuators during the focusing and zooming process, therefore, a voice coil motor is not required in the camera module. This approach avoids several problems. First, it prevents electromagnetic interference from multiple different voice coil motors, which can lead to lower stroke control accuracy when using a moving magnet voice coil motor. Second, it avoids the issues associated with using a moving coil voice coil motor, where the flexible circuit board needs to move with the mirror assembly, causing the flexible circuit board to generate counterforce that makes the mirror assembly difficult to drive or causes it to tilt, resulting in lower control accuracy. It also avoids the problem of the large size of the flexible circuit board leading to a larger overall camera module size.

[0008] In one optional embodiment, a receiving cavity is formed within the base, the receiving cavity having a first sidewall and a second sidewall that are oppositely disposed and parallel to a first direction. Both the first and second piezoelectric actuators are located on the side of the first sidewall facing away from the second sidewall. This allows the power supply devices for the first and second piezoelectric actuators to also be located on the side of the first sidewall, facilitating the layout of the internal structure of the camera module and promoting miniaturization of the camera module.

[0009] In one optional embodiment, the first piezoelectric actuator includes a first piezoelectric vibrator and a first movable part. The first piezoelectric vibrator is connected to a base. The first movable part is located between the first piezoelectric vibrator and a first sidewall, and abuts against the first piezoelectric vibrator. The first movable part is connected to a first mirror assembly and is also movably connected to the first sidewall along a first direction. In this case, the first piezoelectric vibrator can serve as a fixing member of the first piezoelectric actuator, allowing the first piezoelectric actuator to be connected to the base via the first piezoelectric vibrator. When the first piezoelectric actuator is located on the side of the first sidewall facing away from the second sidewall, the first piezoelectric vibrator is located on the side where the first sidewall is located. The first movable part can serve as a movable member of the first piezoelectric actuator, allowing the first piezoelectric actuator to be connected to the first mirror assembly via the first movable part. Thus, during the vibration of the first piezoelectric vibrator, because the first movable part abuts against the first piezoelectric vibrator, the first piezoelectric vibrator can transmit the macroscopic displacement generated by the microscopic vibration to the first movable part, driving the first movable part to move relative to the base along the first direction. Since the first movable part is connected to the first mirror assembly, it can drive the first mirror assembly to move relative to the base along the first direction. Furthermore, the first piezoelectric vibrator abuts against the first movable part, which is connected to the first mirror assembly. Therefore, there is no direct contact or connection between the first piezoelectric vibrator and the first mirror assembly; they are decoupled. This prevents the tilt angle generated by the first piezoelectric vibrator during vibration from being directly transmitted to the first mirror assembly, thus allowing the first mirror assembly to move stably along the first direction and reducing the probability of displacement. The structure of the second piezoelectric actuator and its arrangement on the first sidewall are the same as described above and will not be repeated here.

[0010] In one optional embodiment, the first piezoelectric vibrator includes a piezoelectric sheet and a contact bump. The piezoelectric sheet is elastically connected to a base. The contact bump is disposed on the side of the piezoelectric sheet facing the first movable portion and contacts the first movable portion. The contact bump protrudes from the piezoelectric sheet, resulting in a smaller contact area between the contact bump and the first movable portion. Thus, the bump serves as the starting point for the entire first piezoelectric vibrator, which is beneficial for the piezoelectric vibrator to generate vibration.

[0011] In one optional embodiment, the first piezoelectric actuator further includes an elastic element connected to the side of the first piezoelectric vibrator opposite to the first movable portion, and the elastic element is also connected to a base. Therefore, the elastic element can also serve as a fixing element for the first piezoelectric actuator. Furthermore, the elastic element provides a pre-pressure to the first piezoelectric vibrator to abut against the first movable portion, thereby ensuring that the first piezoelectric vibrator is in close contact with the first movable portion under the pre-pressure, which facilitates the transmission of the macroscopic displacement generated by the micro-vibration of the first piezoelectric vibrator to the first movable portion.

[0012] In one optional embodiment, the second piezoelectric actuator includes a second piezoelectric vibrator and a second movable part. The second piezoelectric vibrator is connected to the base. The second movable part is located between the second piezoelectric vibrator and the first sidewall, and abuts against the second piezoelectric vibrator. The second movable part is connected to the second lens assembly, and is also movably connected to the first sidewall along a first direction. The working principles of the second piezoelectric vibrator and the second movable part are the same as those of the first piezoelectric vibrator and the first movable part, respectively, and will not be repeated here. In addition, an elastic element is also connected to the side of the second piezoelectric vibrator opposite to the second movable part. In this case, when the first piezoelectric actuator and the second piezoelectric actuator are located on the same side of the base, the first piezoelectric actuator and the second piezoelectric actuator can share the same elastic element. In this way, by sharing the same elastic element, the number of components in the camera module can be reduced, thereby simplifying the product structure.

[0013] In one optional embodiment, along a first direction, both ends of a first sliding shaft are connected to a base. Both a first mirror assembly and a second mirror assembly are slidably engaged with the first sliding shaft. Along the first direction, both ends of a second sliding shaft are connected to the base, and both the first and second mirror assemblies are slidably engaged with the second sliding shaft. In this case, the first mirror assembly driven by the first piezoelectric actuator can move along the same sliding shaft as the second mirror assembly driven by the second piezoelectric actuator, for example, along the extending direction of the first (or second) sliding shaft. In this case, the first and second sliding shafts can guide the movement direction of the first and second mirror assemblies, so that multiple mirror groups, for example, the first and second mirror assemblies, can move coaxially.

[0014] In related technologies, when multiple moving-magnet voice coil motors drive multiple lens groups respectively, magnetic field interference between the multiple voice coil motors affects the tilt angle between different lens groups. This prevents the multiple voice coil motors from being located on the same side of the base, thus hindering coaxial sliding of the multiple lens groups. The tilt angle between lens groups refers to the relative angle between the center of the lens holder and a preset reference line. In contrast, the camera module provided in this application does not require the aforementioned voice coil motors. Therefore, on the one hand, during the zooming or focusing process of the camera module, since the multiple lens groups, such as the first lens group assembly and the second lens group assembly, can slide coaxially, the sliding reference of the first lens group assembly and the second lens group assembly is consistent, thereby improving the zooming or focusing accuracy of the entire camera module. On the other hand, when the first lens group assembly and the second lens group assembly are coaxial, and the first piezoelectric actuator and the second piezoelectric actuator are located on the same side, such as the first sidewall, the first lens group assembly and the second lens group assembly can share a travel space along a first direction within the receiving cavity. In this case, at least a portion of the space in which the first lens assembly moves along the first direction within the receiving cavity can also be reused as the space in which the second lens assembly moves along the first direction within the receiving cavity. This effectively reduces the size of the camera module along the first direction compared to the scheme where the first and second lens assemblies each have independent travel spaces, thereby facilitating the miniaturization of the camera module.

[0015] In one optional embodiment, both the first and second sliding shafts are metal shafts. Furthermore, the camera module also includes a first magnetic component and a second magnetic component. The first magnetic component is disposed on the first lens assembly. The second magnetic component is disposed on the first lens assembly. In this way, the attraction between the first magnetic component and the first sliding shaft makes the movement of the first lens assembly more stable during sliding along the first sliding shaft. Moreover, the arrangement and technical effects of the second magnetic component and the second sliding shaft are the same as described above, and will not be repeated here.

[0016] In one optional embodiment, a first lens assembly has a first groove extending along a first direction and slidingly engaging with a first sliding shaft. The first groove is a V-shaped groove. A second groove extending along the first direction and slidingly engaging with a second sliding shaft is also provided on the first lens assembly. The second groove is a U-shaped or L-shaped groove. Based on this, on the one hand, when the first groove and the first sliding shaft are slidingly engaged, the two opposite sidewalls of the first sliding shaft and the first groove are in contact, meaning the two opposite sidewalls of the first sliding shaft and the first groove are in a zero-fit state. This allows the sliding direction of the first lens assembly to be limited by the first groove. This ensures that the first lens assembly slides along the extension direction of the first sliding shaft, i.e., the first direction, reducing the probability of the first lens assembly shifting. On the other hand, when the second groove and the second sliding shaft are in sliding engagement, there may be a gap between the second sliding shaft and at least one side wall of the second groove. This gap allows the second sliding shaft to have a certain amount of room to move on the surface perpendicular to the first direction, reducing the possibility of interference and preventing jamming when the first mirror assembly moves along the first direction.

[0017] In one optional embodiment, the second lens assembly has a fifth groove extending along a first direction and slidingly engaging with a first sliding shaft. The shape of the fifth groove is the same as that of the first groove. For example, if the first groove is V-shaped, the fifth groove is also V-shaped. Furthermore, the second lens assembly has a sixth groove extending along the first direction and slidingly engaging with the second sliding shaft. The shape of the sixth groove is the same as that of the second groove. For example, if the second groove is L-shaped or U-shaped, the sixth groove is also L-shaped or U-shaped. This ensures that the grooves engaging with the same sliding shaft are identical in shape for both the first and second lens assemblies, thus limiting the sliding of both assemblies while preventing the aforementioned jamming phenomenon.

[0018] In one optional embodiment, the side of the second mirror assembly facing away from the first and second sliding shafts may be provided with a magnetic component that attracts the first and second sliding shafts. The arrangement and technical effects of the magnetic component are the same as described above, and will not be repeated here.

[0019] In one optional embodiment, the camera module further includes a first optical path deflector, a third lens assembly, and a driving device. The first lens assembly is located on the light-emitting side of the first optical path deflector. The third lens assembly is located on the light-incident side of the first optical path deflector, and is slidably connected to the base along a first direction, with its optical axis perpendicular to the first direction. A portion of the driving device (e.g., a fixed portion) is connected to the base, and another portion (e.g., a movable portion) is connected to the third lens assembly. The driving device drives the third lens assembly to slide along the first direction, thereby enabling it to move along the first direction to cooperate with other lens groups to achieve focal length switching.

[0020] In one optional embodiment, a receiving cavity is formed within the base, the receiving cavity having a first sidewall and a second sidewall that are oppositely disposed and parallel to a first direction. The driving device is a third piezoelectric actuator, which is located on the side of the second sidewall opposite to the first sidewall. In this way, the driving device and the first piezoelectric actuator (or the second piezoelectric actuator) can be located on opposite sides of the receiving cavity, thereby reducing the size of the camera module along the first direction.

[0021] In one alternative embodiment, the first piezoelectric actuator, the second piezoelectric actuator, and the driving device may be located on the same side of the base, for example, all on the same side as the first sidewall (or the second sidewall).

[0022] In one optional embodiment, the driving device is a voice coil motor, which includes a coil and a magnet. The coil is connected to a base, and the magnet is connected to the third mirror assembly. Alternatively, the coil is connected to the third mirror assembly, and the magnet is connected to the base. During movement, the magnet or coil drives the third mirror assembly to move relative to the base along a first direction.

[0023] In one optional embodiment, the camera module further includes a first optical path deflector and a third lens assembly. The first lens assembly is located on the light-emitting side of the first optical path deflector. The third lens assembly is located on the light-incident side of the first optical path deflector, and is slidably connected to the base along a first direction, with its optical axis perpendicular to the first direction. The third lens assembly is connected to a first piezoelectric actuator or a second piezoelectric actuator, which also drives the third lens assembly to slide along the first direction. In this way, the camera module does not require a separate actuator for moving the third lens assembly along the first direction. By sharing the same actuator with the first or second lens assembly, the number of components in the camera module can be reduced, thus simplifying the camera module's structure.

[0024] In one optional embodiment, a receiving cavity is formed within the base. Furthermore, the camera module includes a first sliding shaft, a second sliding shaft, a third sliding shaft, and a fourth sliding shaft. Along a first direction, both ends of the first sliding shaft are connected to the base, and both the first and second lens assemblies slide in engagement with the first sliding shaft. Along the first direction, both ends of the second sliding shaft are connected to the base, and both the first and second lens assemblies slide in engagement with the second sliding shaft. The technical effects of the first and second sliding shafts are the same as described above and will not be repeated here. Along the first direction, both ends of the third sliding shaft are connected to the base, and the third sliding shaft is located on the side of the first sliding shaft opposite to the receiving cavity; the third lens assembly slides in engagement with the third sliding shaft. Along the first direction, both ends of the fourth sliding shaft are connected to the base, and the fourth sliding shaft is located on the side of the second sliding shaft opposite to the receiving cavity; the third lens assembly slides in engagement with the fourth sliding shaft. In this configuration, the third and fourth sliding shafts can guide the movement direction of the third lens assembly, reducing deviation during the sliding process. As described above, the third sliding axis can be located above the first sliding axis, and the fourth sliding axis can be located above the second sliding axis. Therefore, the third lens assembly, which slides in conjunction with the third and fourth sliding axes, can be located above the first and second lens assemblies. This allows the third lens assembly to occupy space in the first direction, thereby reducing the size of the camera module along the first direction.

[0025] In one optional embodiment, the camera module further includes a first sliding shaft and a second sliding shaft. Along a first direction, both ends of the first sliding shaft are connected to the base, and the first lens assembly, the second lens assembly, and the third lens assembly all slide in engagement with the first sliding shaft. Similarly, along the first direction, both ends of the second sliding shaft are connected to the base, and the first lens assembly, the second lens assembly, and the third lens assembly all slide in engagement with the second sliding shaft. This allows the first lens assembly, the second lens assembly, and the third lens assembly to move along the same sliding shaft, for example, along the extension direction of the first (or second) sliding shaft, thereby reducing the number of sliding shafts and simplifying the camera module structure.

[0026] In one optional embodiment, a third groove and a fourth groove are formed on the side wall of the receiving cavity facing the first movable part. The third groove and the fourth groove extend along a first direction and are arranged side by side. The first piezoelectric actuator also includes a first slider and a second slider. The first slider is disposed on the side of the first movable part facing the receiving cavity, and is slidably connected to the third groove and the first movable part. The second slider is disposed on the side of the first movable part facing the receiving cavity, and is slidably connected to the fourth groove and the first movable part. In this case, during the reciprocating motion of the first movable part along the first direction, the first slider can slide within the third groove, and the second slider can slide within the fourth groove. The third groove and the fourth groove can guide the movement direction of the first slider and the second slider, respectively. Since the extending directions of the third groove and the fourth groove are parallel to the first direction, the first slider and the second slider slide along the first direction. Based on this, since the first slider is connected to the first movable part and the second slider is in contact with the first movable part, the first movable part can be driven to reciprocate relative to the base along the first direction by the first slider and the second slider.

[0027] In one optional embodiment, a third groove and a fourth groove are formed on the side wall of the receiving cavity facing the first movable part. The third groove and the fourth groove extend along a first direction and are arranged side by side. The first piezoelectric actuator also includes a first ball and a second ball. The first ball is disposed on the side of the first movable part facing the receiving cavity, and is in rolling connection with the third groove and in contact with the first movable part. The second ball is disposed on the side of the first movable part facing the receiving cavity, and is in rolling connection with the fourth groove and in contact with the first movable part. In this case, during the reciprocating motion of the first movable part along the first direction, the first ball can roll within the third groove, and the second ball can roll within the fourth groove. The third groove and the fourth groove can guide the movement direction of the first ball and the second ball, respectively.

[0028] In one optional embodiment, the third groove extends along the first direction and is a V-shaped groove. The fourth groove extends along the first direction and is a U-shaped or L-shaped groove. Based on this, on the one hand, when the first ball can be located within the third groove, the first ball abuts against both opposite sidewalls of the third groove, meaning the first ball and both opposite sidewalls of the third groove are in a zero-fit state. This limits the rolling direction of the first ball through the third groove. This causes the first ball to roll along the extension direction of the third groove, i.e., the first direction, reducing the probability of the first ball deviating, and consequently reducing the probability of the first movable part deviating when moving along the first direction. On the other hand, when the second ball can be located within the fourth groove, there can be a gap between the second ball and at least one sidewall of the fourth groove. This gap allows the second ball some room to move on a surface perpendicular to the first direction, reducing the possibility of interference and preventing jamming when the first movable part moves along the first direction.

[0029] In one optional embodiment, the first piezoelectric actuator further includes a third magnetic element and a fourth magnetic element. The third magnetic element is located between the first movable part and the first mirror assembly, and is connected to the first movable part. The fourth magnetic element is located between the first movable part and the first mirror assembly, and is connected to the first mirror assembly. The third and fourth magnetic elements are arranged sequentially along a first direction, and are magnetically attracted to each other. The first movable part is indirectly connected to the first mirror assembly through the third and fourth magnetic elements. In this way, along the first direction, the first movable part can be more tightly connected to the first mirror assembly through the third and fourth magnetic elements. In this case, when the first piezoelectric oscillator converts microscopic vibrations into macroscopic displacements along the first direction, this displacement can be effectively transmitted to the first mirror assembly through the tightly attracted third and fourth magnetic elements, thereby improving the efficiency and accuracy of controlling the movement of the first mirror assembly along the first direction.

[0030] In one optional embodiment, the camera module further includes a fifth magnetic element, a sixth magnetic element, and at least three first displacement detectors. The fifth magnetic element is connected to the first lens assembly and is used to generate a magnetic field. The sixth magnetic element is connected to the second lens assembly and is used to generate a magnetic field. The at least three first displacement detectors are connected to the base. Along a first direction, the at least three first displacement detectors are spaced apart within the travel range of the first and second lens assemblies. The at least three first displacement detectors are used to jointly detect the magnetic fields of the fifth and sixth magnetic elements. In this way, when the displacement of the first and second lens assemblies is a long stroke (e.g., a maximum of 10 mm or more), by arranging at least three spaced first displacement detectors within the travel range of the first and second lens assemblies, the at least three first displacement detectors can jointly detect changes in the magnetic field, avoiding detection blind spots in the middle region of the long stroke, thereby improving the displacement control accuracy of the first and second lens assemblies.

[0031] In one alternative implementation, the camera module may include two displacement detectors (e.g., Hall sensors or TMR sensors) connected to the first and second lens groups respectively, and a magnetic component (e.g., a magnetic grating and a magnet) connected to the base. The operating principles of the displacement sensors and the magnetic component are as described above and will not be repeated here.

[0032] In one optional embodiment, the camera module further includes a seventh magnetic component and two second displacement detectors, which serve as components for displacement detection of the third lens assembly. The seventh magnetic component is connected to the third lens assembly and generates a magnetic field. The two second displacement detectors are connected to a base. The two second displacement detectors are spaced apart at both ends of the travel range of the third lens assembly and are used to detect the magnetic field of the seventh magnetic component. In this way, while one second displacement detector detects the magnetic field strength, the other can perform auxiliary detection of the magnetic field strength, thereby improving the accuracy of displacement detection. Displacement detectors can be eliminated in the middle of the travel range of the third lens assembly, thus simplifying the structure and reducing costs.

[0033] In one alternative implementation, the camera module may include a displacement detector (e.g., a Hall sensor or a TMR sensor) connected to the third lens assembly, and a magnetic component (e.g., a magnetic grating and a magnet) connected to the base. The operating principles of the displacement sensor and the magnetic component are as described above and will not be repeated here.

[0034] In another aspect of this application, an electronic device is provided, comprising a housing and any of the camera modules described above. The camera module is disposed within the housing. The electronic device described above has the same technical effects as the camera module provided in the foregoing embodiments, and will not be repeated here. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application;

[0036] Figure 2 for Figure 1 A schematic diagram of a camera module structure;

[0037] Figure 3 for Figure 2 A schematic diagram of an exploded structure of a camera module;

[0038] Figure 4 for Figure 2 A schematic diagram of a central optical system;

[0039] Figure 5 For along Figure 4 The sectional view obtained by cutting along the dashed lines A1-A2 in the figure;

[0040] Figure 6 This is a schematic diagram of the structure of a camera module provided in an embodiment of this application;

[0041] Figure 7 This application provides a schematic diagram of a sliding mirror assembly.

[0042] Figure 8 For along Figure 7 The sectional view obtained by cutting along the dashed lines A3-A4 in the figure;

[0043] Figure 9 This is a schematic diagram of another camera module provided in an embodiment of this application;

[0044] Figure 10 For along Figure 6 The sectional view obtained by cutting along the dashed lines A5-A6 in the figure;

[0045] Figure 11 For along Figure 9 A schematic diagram obtained from the C direction;

[0046] Figure 12 For along Figure 9 Another schematic diagram obtained from direction C;

[0047] Figure 13 This is a schematic diagram of the structure of another camera module provided in an embodiment of this application;

[0048] Figure 14 This is another schematic diagram of the sliding of a mirror assembly provided in an embodiment of this application;

[0049] Figure 15 For along Figure 14 A sectional view obtained by cutting along the dashed lines A7-A8 in the figure;

[0050] Figure 16 For along Figure 14 Another sectional view obtained by cutting along the dashed lines A7-A8 in the figure;

[0051] Figure 17 A schematic diagram of an optical system provided in an embodiment of this application;

[0052] Figure 18 This is a schematic diagram of another camera module provided in an embodiment of this application;

[0053] Figure 19 This is a schematic diagram of another camera module provided in an embodiment of this application;

[0054] Figure 20 This is another schematic diagram of a mirror group component sliding provided in an embodiment of this application;

[0055] Figure 21 This is a schematic diagram of another camera module provided in an embodiment of this application;

[0056] Figure 22 This is another schematic diagram of the sliding of a mirror group component provided in an embodiment of this application;

[0057] Figure 23 This is another schematic diagram of the sliding of a mirror group component provided in an embodiment of this application;

[0058] Figure 24 This is a schematic diagram of another camera module provided in an embodiment of this application;

[0059] Figure 25 For along Figure 24 A schematic diagram obtained from direction E in the diagram;

[0060] Figure 26 For along Figure 24 Another schematic diagram obtained from direction E in the diagram;

[0061] Figure 27 For along Figure 24 Another schematic diagram obtained from direction E in the diagram;

[0062] Figure 28 For along Figure 24 Another schematic diagram obtained from direction E in the diagram.

[0063] Figure label:

[0064] 01-Electronic device; 02-Display screen; 03-Back cover; 04-Mid-frame; 05-Circuit board; 06-Opening; 07-Housing; 10-Camera module; 11-Housing housing; 12-Optical system; 13-Filter; 14-Image sensor; 15-Base; 101-Receiving cavity; M1-First sidewall; M2-Second sidewall; 21-First lens assembly; 22-Second lens assembly; 23-First optical path deflector; 24-Second optical path deflector; 200-Optical lens; 31-First piezoelectric actuator; 32-Second piezoelectric actuator; 33-Elastic element; 311a-First piezoelectric vibrator; 312a-First movable part; 311b-Second piezoelectric vibrator; 312b-Second movable part; 3110-Piezoelectric sheet; 3111-Contact bump; 43-Third magnetic element; 44-The Four magnetic components; 3112-First ball bearing; 3113-Second ball bearing; 503-Third groove; 504-Fourth groove; 3100-Groove; 3114-First slider; 3115-Second slider; 61-First sliding shaft; 62-Second sliding shaft; 611-First magnetic component; 612-Second magnetic component; 211-First groove; 212-Second groove; 213-Fifth groove; 214-Sixth groove; 25-Third mirror assembly; 34-Drive device; 311c-Third piezoelectric vibrator; 312c-Third moving part; 63-Third sliding shaft; 64-Fourth sliding shaft; 331-Magnet; 332-Coil; 201-Fifth magnetic component; 202-First displacement detector; 203-Sixth magnetic component; 301-Seventh magnetic component; 302-Second displacement detector. Detailed Implementation

[0065] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0066] In the following description, the terms "first," "second," etc., are used for descriptive convenience only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0067] Furthermore, in the embodiments of this application, directional terms such as "upper," "lower," "lateral," "longitudinal," "horizontal," and "vertical" may be defined relative to the orientation of the components shown in the accompanying drawings. It should be understood that these directional terms can be relative concepts, used for relative description and clarification, and may change accordingly depending on the orientation of the components in the accompanying drawings.

[0068] In this application, unless otherwise expressly specified and limited, the term "connection" shall be interpreted broadly. For example, "connection" may be a fixed mechanical connection, a detachable mechanical connection, or an integral part; or, "connection" may be a direct connection or an indirect connection through an intermediate medium.

[0069] Furthermore, unless otherwise explicitly specified and limited, the term "electrical connection" should be interpreted broadly. For example, "electrical connection" can be a direct electrical connection, such as physical contact and electrical conduction between two components; it can also be understood as the electrical connection between different components in a circuit structure through physical lines that can transmit electrical signals, such as copper foil or wires on a printed circuit board (PCB), to transmit electrical signals; or, "electrical connection" can be an indirect electrical connection between two components through an intermediate medium; or, "electrical connection" can be an electrical connection between two components in a non-contact manner, such as an electrical connection between two components using capacitive coupling to transmit electrical signals.

[0070] In the embodiments of this application, the terms "vertical" and "parallel" respectively indicate approximately vertical and approximately parallel within a certain error range. This error range can be a range where the deviation angle relative to absolute verticality and absolute parallelism is less than or equal to 5°, 8°, or 10°, respectively, and is not specifically limited here.

[0071] In the embodiments of this application, directional terms such as "up," "down," "left," and "right" may be defined relative to the orientation of the components shown in the accompanying drawings. It should be understood that these directional terms can be relative concepts, used for relative description and clarification, and can change accordingly depending on the orientation of the components in the accompanying drawings.

[0072] In the accompanying drawings of the embodiments of this application, components are represented by guide lines with arrows; parts are represented by guide lines only; and hollow structures such as openings and holes are represented by guide lines with wavy lines at the ends.

[0073] This application provides an electronic device that can have a display function. This electronic device can be applied to various communication systems or protocols, such as Bluetooth (BT), Global Positioning System (GPS), Global System for Mobile Communication (GSM), Wireless Fidelity (WiFi), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), 5G, and other future communication technologies. The electronic device in this application can be a mobile phone, tablet, laptop, camera, smart home device, smart wearable device (e.g., smartwatch, smart bracelet, smart glasses, smart helmet), virtual reality (VR) electronic device, augmented reality (AR) electronic device, etc. Electronic devices can also be handheld devices with wireless communication capabilities, computing devices or other processing devices connected to a wireless modem, vehicle-mounted devices, electronic devices in 5G networks, or electronic devices in future evolved public land mobile networks (PLMNs), etc., and the embodiments of this application are not limited to these.

[0074] In some embodiments, in order to enable the above-mentioned electronic device to perform a display function, such as Figure 1 As shown, the electronic device 01 provided in this application embodiment may include a display screen 02, a rear cover 03 located on the back of the display screen 02 (distributed opposite to the display surface of the display screen 02), and a mid-frame 04 located between the display screen 02 and the rear cover 03. The mid-frame 04 can support the display screen 02.

[0075] The display screen 02 can be a liquid crystal display (LCD), an organic light emitting diode (OLED) display, a micro (or mini) light-emitting diode (LED) display, or a quantum dot light-emitting diode (QLED) display, etc. This application does not limit the type of the above-mentioned display screen.

[0076] The aforementioned electronic device 01 may further include a circuit board 05 electrically connected to the display screen 02, and a processor electrically connected to the display screen 02 is disposed on the circuit board 05. A rear cover 03 is fastened to a middle frame 04, thereby forming an installation space between the rear cover 03 and the middle frame 04 to accommodate the circuit board 05, processor, battery, and other components. The processor can provide display data to the display screen 02 to drive the display screen 02 to display images.

[0077] For example, the processor described above may include one or more processing units, such as: 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. The different processing units may be independent devices or integrated into one or more processors.

[0078] In addition, the aforementioned electronic device 01 may also include a gyroscope 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, a headphone jack, a sensor module, buttons, and a camera, all electrically connected to the processor. The sensor module may include pressure sensors, gyroscope sensors, barometric pressure sensors, magnetic sensors, accelerometers, distance sensors, proximity sensors, fingerprint sensors, temperature sensors, touch sensors, ambient light sensors, and bone conduction sensors, etc.

[0079] In some embodiments, in order to enable the electronic device 01 to perform the shooting function, the electronic device 01 provided in the embodiments of this application may further include, as follows: Figure 1 The camera module 10 is shown. The rear shell 03 and the mid-frame 04 constitute the housing 07 of the electronic device 01, and the camera module 10 can be disposed within the housing 07. The camera module 10 can be a front-facing camera module or a rear-facing camera module. A front-facing camera module can be disposed within... Figure 1On the back of the display screen 02 shown, the photosensitive surface of the front camera module is located on one side of the display surface of the display screen 02. The rear camera module can be set on the side of the middle frame 04 away from the display screen 02, that is, in the mounting space formed between the middle frame 04 and the back cover 03, and the photosensitive surface of the rear camera module is located on the back of the electronic device 01.

[0080] For example, taking a rear camera module as an example, the rear cover 03 has an opening 06 for exposing part of the camera module 10, and the opening 06 exposes the light-incident side of the camera module 10. The camera module 10 can be one or more of a standard camera module, a telephoto camera module, a super telephoto camera module, a wide-angle camera module, and an ultra-wide-angle camera module. This application does not limit the number of camera modules 10 in the electronic device 01.

[0081] The following describes the structure of camera module 10 as an example of a periscope camera module. In some embodiments of this application, such as... Figure 2 As shown, the camera module 10 may include a housing 11, an optical system 12, a filter 13, and an image sensor 14. At least a portion of the optical system 12 may be disposed within the housing 11.

[0082] For ease of description, an XYZ coordinate axis is established in the attached diagram, where the Z direction can be aligned with the light-incident side of the camera module 10 (i.e., the side used for receiving light). Figure 2 The incident light (on one side of the solid arrow shown) is perpendicular to the light source. The XY plane formed by the X and Y directions can be perpendicular to the surface (i.e., the light-incident surface) where the light-incident side of the camera module 10 is located. For ease of explanation, the X direction will be referred to as the first direction X below.

[0083] Based on this, during the shooting process, the external light from the camera module 10 travels along... Figure 2 After entering the housing 11 in the direction indicated by the solid arrow, the light is transmitted to the image sensor 14 through the optical system 12 to achieve the purpose of imaging. For example, the optical system 12 may include multiple lens groups, each of which may include one or more optical lenses. These optical lenses can be convex or concave lenses, allowing the optical system 12 with these lenses to utilize the refraction principle of the lenses to converge the light from the subject onto the focal plane of the camera module 10 for imaging.

[0084] Furthermore, the image sensor 14 can be positioned at the focal plane of the camera module 10, thereby receiving the light image of the subject converged by the optical system 12 and performing photoelectric conversion to generate image information. For example, the image sensor 14 can be a charge-coupled device (CCD) or a complementary metal-oxide semiconductor (CMOS) device. The image sensor 14 may include multiple photosensitive units (not shown in the figure), each photosensitive unit converting the received light amount into an electrical signal proportional to that light amount.

[0085] Based on this, in order to improve the effective resolution and color reproduction of the image sensor 14, the aforementioned filter 13 can be disposed on the light-incident side of the image sensor 14. For example, the filter 13 can be an infrared filter 13, which can filter out infrared light from ambient light and allow visible light to pass through. Alternatively, as another example, the filter 13 can be a dual-bandpass filter, capable of selecting wavelengths within two regions of ambient light to pass through, such as visible light and infrared light, or visible light and ultraviolet light, or ultraviolet light and infrared light, etc.

[0086] As can be seen from the above, if Figure 3 As shown, the optical system 12 may include multiple mirror groups, such as a first mirror group 21 and a second mirror group 22. The mirror groups can perform certain processing on the received light, such as aberration correction and achromatic correction.

[0087] Continue as Figure 3 As shown, the camera module 10 also includes a base 15, which has a receiving cavity 101. A portion of the first lens assembly 21 and a portion of the second lens assembly 22 are located within the receiving cavity 101, and the first lens assembly 21 and the second lens assembly 22 can be arranged sequentially along a first direction X. The optical axis O1-O2 of the first lens assembly 21 can be aligned with the optical axis of the second lens assembly 22. Figure 3 (Not marked in the text) The directions are approximately or completely overlapping. Furthermore, the optical axis O1-O2 direction of the first mirror group assembly 21 and the optical axis direction of the second mirror group assembly 22 can be parallel to the first direction X.

[0088] Based on this, the first lens assembly 21 can be movably connected to the base 15 along the first direction X (e.g., sliding or rolling connection), and the second lens assembly 22 can also be movably connected to the base 15 along the first direction X (e.g., sliding or rolling connection). During the movement (reciprocating motion) of the first lens assembly 21 and the second lens assembly 22 along the first direction X, the focal length of the camera module 10 can be changed by altering the distance between the optical lenses, achieving optical zoom and autofocus (AF). In this way, the camera module 10 can capture images of objects at different distances through optical zoom and autofocus.

[0089] Optical zoom refers to zooming achieved through the structure of an optical lens, which is produced by changing the positions of the optical lens or lens group, the object, and the focal point. Focal length refers to the vertical distance from the optical center of an optical lens or lens group to the focal point (or focal plane) when a scene at infinity is projected into a clear image on the focal plane. Optical zoom can change this vertical distance from the optical center to the focal point. For example, the camera module 10 provided in this application embodiment offers selectable zoom ranges including: ultra-wide-angle focal length (focal length less than 21mm), wide-angle focal length (focal length 21mm-35mm), standard focal length (focal length 35mm-70mm), medium telephoto focal length (focal length 70mm-135mm), and telephoto focal length (focal length 135-500mm), etc.

[0090] Furthermore, the aforementioned optical axis O1-O2 direction can refer to the direction of optically transmitted light rays in the first mirror assembly 21. For example, for a symmetrical first mirror assembly 21, the optical axis O1-O2 can coincide with the optical rotation center line of the first mirror assembly 21. If a ray coincides with the optical axis, the light will be transmitted along the optical axis in the optical system. The optical axis of the second mirror assembly 22 can be obtained similarly, and will not be elaborated further here.

[0091] The above example illustrates the optical system 12, which includes two lens groups (i.e., the first lens group 21 and the second lens group 22). This application does not limit the number of lens groups. For example, the optical system 12 may include three or more lens groups. In this case, by setting different lens groups, different lens groups can achieve more diverse focal lengths at different positions, thereby increasing the degree of freedom of the camera module during zooming and focusing.

[0092] like Figure 4As shown, the optical system 12 may further include a first optical path deflector 23 and a second optical path deflector 24. The aforementioned optical path deflectors can change the propagation path of light. For example, they can change light rays that originally propagated vertically to propagate horizontally, or vice versa. For example, the aforementioned optical path deflector can be a prism (e.g., a right-angle prism or a triangular prism) or a reflector. The first mirror assembly 21 and the second mirror assembly 22 can be located on the light-emitting side of the first optical path deflector 23, and the first mirror assembly 21 and the second mirror assembly 22 can be located on the light-incident side of the second optical path deflector 24. In this case, the surface of the light-incident side of the first optical path deflector 23 can serve as the light-incident side of the camera module for receiving external light.

[0093] Based on this, such as Figure 5 (for the following) Figure 4 As shown in the cross-sectional view obtained by cutting along the dashed lines A1-A2, after the external light rays are incident on the first optical path deflector 23 along the direction of the solid arrow, the transmission direction of the light rays can be changed by the reflection of the first optical path deflector 23, so that the light rays can be incident sequentially on the first mirror assembly 21 and the second mirror assembly 22 along the first direction X. For example, any one of the mirror assembly 21 and the second mirror assembly 22 may include at least one optical lens 200. Under the optical action of the optical lenses 200 of the first mirror assembly 21 and the second mirror assembly 22, the light rays can be incident on the second optical path deflector 24, and under the reflection of the second optical path deflector 24, the light rays are projected onto the filter 13 and the image sensor 14.

[0094] Alternatively, as another example, either the first lens assembly 21 or the second lens assembly 22 may also include a lens holder for supporting the aforementioned optical lens 200. Figure 5 (Not shown in the image). In this case, the optical lens 200 in either the first mirror assembly 21 or the second mirror assembly 22 can be located in... Figure 3 The lens holder is located within the receiving cavity 101. Furthermore, a portion of the lens holder in the aforementioned lens assembly may be located within the receiving cavity 101, while another portion may be located outside the receiving cavity 101.

[0095] In this case, the camera module 10 provided in the embodiments of this application, through, as Figure 5 The first optical path deflector 23 and the second optical path deflector 24 shown can change the propagation path of the incident light, thereby reducing the height requirement (dimension along the Z direction) of the camera module. This allows the camera module 10 to be arranged laterally along the first direction X in the electronic device 01 (e.g., Figure 1 The thickness of the entire electronic device 01 can be effectively reduced by placing it inside the body (as shown).

[0096] The above example illustrates an optical system 12 comprising two optical path deflectors, such as a first optical path deflector 23 and a second optical path deflector 24. This application does not limit the number of optical path deflectors in the optical system 12. For example, in some other embodiments of this application, by changing... Figure 5 The positions of the intermediate filter 13 and the image sensor 14 mean that the second optical path deflector 24 may not be provided in the optical system 12. Alternatively, the optical system 12 may include three or more optical path deflectors as needed.

[0097] Furthermore, the aforementioned camera module 10 may also include an optical image stabilization (OIS) device to avoid or reduce instrument shake during the capture of optical signals, thereby improving image quality. For example, the OIS device may be located in... Figure 5 The image sensor 14 is located on the side opposite to the filter 13. This application does not limit the structure or placement of this OIS device.

[0098] As described above, the focal length of the camera module 10 can be changed during the movement of the first lens assembly 21 and the second lens assembly 22 along the first direction X. In this case, in order to drive the first lens assembly 21 and the second lens assembly 22 to move along the first direction X, in some embodiments of this application, such as... Figure 6 As shown, the camera module 10 may also include a first piezoelectric actuator 31 and a second piezoelectric actuator 32, which can utilize the inverse piezoelectric effect of piezoelectric materials to realize the conversion of electrical energy into mechanical energy.

[0099] The inverse piezoelectric effect refers to the phenomenon where, when an electric field is applied along the polarization direction of a dielectric, the dielectric will undergo mechanical deformation or stress in a certain direction. When the applied electric field is removed, these deformations or stresses also disappear. By applying an alternating electric field to the aforementioned dielectric, continuous deformation can be induced in the dielectric, which can then manifest as vibration on a macroscopic scale.

[0100] Furthermore, a portion of the first piezoelectric actuator 31 (e.g., as a fixed part) can be connected to the base 15, and another portion of the first piezoelectric actuator 31 (e.g., as a movable part) can be connected to the first mirror assembly 21. The first piezoelectric actuator 31 is used to drive the first mirror assembly 21 to move along the first direction X. Additionally, a portion of the second piezoelectric actuator 32 (e.g., as a fixed part) can be elastically connected to the base 15, and another portion of the second piezoelectric actuator 32 (e.g., as a movable part) can be connected to the second mirror assembly 22. The second piezoelectric actuator 32 is used to drive the second mirror assembly 22 to move along the first direction X.

[0101] In some embodiments of this application, the camera module 10 may include ball bearings disposed between the first lens assembly 21 or the second lens assembly 22 and the base 15, so that the first lens assembly 21 or the second lens assembly 22 is tactilely connected to the base 15. Alternatively, in other embodiments of this application, the camera module 10 may include a sliding shaft connected to the base 15, and the first lens assembly 21 or the second lens assembly 22 is slidably connected to the base 15 via the sliding shaft. For ease of explanation, the following description uses the example of the first lens assembly 21 or the second lens assembly 22 being slidably connected to the base 15 via the sliding shaft, and the specific structure of the sliding shaft will be described in detail in subsequent embodiments.

[0102] In this situation, continue as follows Figure 6 As shown, since a portion of the first piezoelectric actuator 31 (e.g., the portion serving as a fixed member) can be connected to the base 15, and another portion of the first piezoelectric actuator 31 (e.g., the portion serving as a movable member) can be connected to the first mirror assembly 21, the first piezoelectric actuator 31 can generate vibrations according to the inverse piezoelectric effect and transmit the macroscopic displacement generated by the microscopic vibrations to the first mirror assembly 21 to drive the first mirror assembly 21 to move along the first direction X (i.e., the optical axis O1-O2 direction of the first mirror assembly 21). Furthermore, as described above, the first mirror assembly 21 is slidably connected to the base 15 along the first direction X. Therefore, under the action of the first piezoelectric actuator 31, the first mirror assembly can move within the receiving cavity 101 along the optical axis O1-O2 direction of the first mirror assembly 21.

[0103] Similarly, the vibration generated by the second piezoelectric actuator 32 can be transmitted to the second lens assembly 22, driving the second lens assembly 22 to move within the receiving cavity 101 along its optical axis (which coincides with the optical axis O1-O2 direction of the first lens assembly 21). In this way, by controlling the vibration patterns (e.g., amplitude, frequency, and direction parameters) of the first and second piezoelectric actuators 31 and 32, the direction and magnitude of the movement of the first and second lens assemblies 21 and 22 within the receiving cavity 101 along the first direction X can be controlled, thereby achieving zoom and autofocus.

[0104] Based on this, as described above, the camera module 10 provided in this application can drive different lens groups through different piezoelectric actuators during the process of autofocus and zooming. That is, the first lens group 21 and the second lens group 22 are driven to move within the receiving cavity 101 by the first piezoelectric actuator 31 and the second piezoelectric actuator 32, respectively. Therefore, the camera module 10 does not require a voice coil motor (VCM).

[0105] A voice coil motor is a device that converts electrical energy into mechanical energy. It consists of a magnet and a coil. The voice coil motor generates mechanical energy by utilizing the interaction between the magnetic field of the magnet and the magnetic field generated by the conductor of the energized coil, acting on the magnetic poles. Specifically, when the energized coil passes through the magnetic field generated by the magnet, it produces a force perpendicular to the magnetic field. The magnitude of this force depends on the intensity of the magnetic field and the current flowing through the coil. Voice coil motors can be divided into moving-coil (coil connected to the driven component) and moving-magnet (magnet connected to the driven component) voice coil motors.

[0106] Therefore, on the one hand, when multiple moving-magnet voice coil motors are used to drive different lens groups in the camera module of related technologies, significant electromagnetic interference will occur between these multiple different moving-magnet voice coil motors, resulting in a reduction in the zoom and focus accuracy of the camera module. In contrast, the multiple piezoelectric actuators in the camera module 10 provided in this application embodiment, for example, the first piezoelectric actuator 31 and the second piezoelectric actuator 32, do not have electromagnetic interference, thereby improving the zoom and focus accuracy of the camera module 10.

[0107] On the other hand, when multiple moving-coil voice coil motors drive different lens groups in a camera module in related technologies, the coils of each voice coil motor need to be connected to a flexible printed circuit (FPC) to power the coils. This FPC needs to move with the lens group under the drive of the coils, causing the FPC to bend under external force and generate a reaction force. This reaction force can make it difficult to drive the lens group or cause it to tilt, resulting in reduced zoom and focus accuracy of the camera module. Furthermore, when the lens group in the camera module needs to achieve a long stroke, the size of the FPC also needs to be increased accordingly to match the long stroke of the lens group. This results in a larger FPC size, thus increasing the overall size of the camera module.

[0108] In comparison, the multiple piezoelectric actuators in the camera module 10 provided in this application embodiment, such as the FPC electrically connected to the first piezoelectric actuator 31 and the second piezoelectric actuator 32, do not need to move with the lens group, thereby avoiding the aforementioned reaction force generated by the FPC and achieving the purpose of improving the zoom and focusing accuracy of the camera module 10. Furthermore, the size of the aforementioned FPC does not need to increase with the movement of the lens group, thus enabling the camera module 10 to achieve a smaller size even with a long stroke (e.g., 10mm or more). Therefore, in summary, the camera module 10 provided in this application embodiment can have the characteristics of multiple lens group components, long stroke, and miniaturization.

[0109] On this basis, continue as Figure 6 As shown, the receiving cavity 101 of the base 15 has a first sidewall M1 and a second sidewall M2 that are oppositely disposed and parallel to the first direction X. The first sidewall M1 and the second sidewall M2 can be parallel to the ZX surface and perpendicular to the Y direction. Optionally, the first piezoelectric actuator 31 and the second piezoelectric actuator 32 are both located on the side of the first sidewall M1 away from the second sidewall M2, that is, the positions of the first piezoelectric actuator 31 and the second piezoelectric actuator 32 can both be located on the same side of the base 15.

[0110] In related technologies, when multiple voice coil motors are used to drive multiple lens groups, the magnets in the multiple voice coil motors interfere with each other, making it impossible to arrange the multiple voice coil motors on the same side. In contrast, the camera module 10 provided in this application does not require voice coil motors. Therefore, the aforementioned multiple first piezoelectric actuators 31 and second piezoelectric actuators 32 can be located on the same side of the base 15 (e.g., the first sidewall M1 or the second sidewall M2). In this way, the power supply devices for the first piezoelectric actuators 31 and second piezoelectric actuators 32 can also be located on the side where the first sidewall M1 is located, which facilitates the layout of the internal structure of the camera module 10 and is beneficial to the miniaturization of the camera module 10.

[0111] Alternatively, in some other embodiments of this application, the first piezoelectric actuator 31 and the second piezoelectric actuator 32 may be located on different sides of the base 15. For example, the first piezoelectric actuator 31 may be located on the side where the first sidewall M1 of the base 15 is located (i.e., the side where the first sidewall M1 is away from the second sidewall M2). The second piezoelectric actuator 32 may be located on the side where the second sidewall M2 of the base is located (i.e., the side where the second sidewall M2 is away from the first sidewall M1), and this application does not limit this.

[0112] The above description uses a camera module 10 with two lens groups (first lens group 21 and second lens group 22) as an example. In other embodiments of this application, optionally, the camera module 10 includes three or more lens groups arranged along the first direction X. The arrangement of the lens groups is the same as described above and will not be repeated here. In this case, similarly, the camera module 10 includes three or more piezoelectric actuators. Each piezoelectric actuator is connected to one lens group to drive the lens group to move relative to the base 15 along the first direction X. The technical effect of the piezoelectric actuator is the same as described above and will not be repeated here. For ease of explanation, the following description uses a camera module 10 including a first lens group 21 and a second lens group 22, as well as a first piezoelectric actuator 31 and a second piezoelectric actuator 32 as an example.

[0113] The structure of the first piezoelectric actuator 31 described above is illustrated below, and the structure of the second piezoelectric actuator 32 can be obtained similarly, and will not be repeated here. In some embodiments of this application, such as Figure 6 As shown, the first piezoelectric actuator 31 may include a first piezoelectric vibrator 311a and a first movable part 312a. Optionally, the first piezoelectric vibrator 311a is connected to the base 15. Therefore, the first piezoelectric vibrator 311a can serve as a fixing member for the first piezoelectric actuator 31, allowing the first piezoelectric actuator 31 to be connected to the base 15 via the first piezoelectric vibrator 311a. When the first piezoelectric actuator 31 is located on the side of the first sidewall M1 opposite to the second sidewall M2, the first piezoelectric vibrator 311a is located on the side where the first sidewall M1 is located.

[0114] Furthermore, when the first piezoelectric actuator 31 is located on the side of the first sidewall M1 facing away from the second sidewall M2, the first movable part 312a is located between the first piezoelectric vibrator 311a and the first sidewall M1, and the first movable part 312a abuts against the first piezoelectric vibrator 311a. The first movable part 312a is connected to the first lens assembly 21. For example, when the first lens assembly 21 includes an optical lens and a lens holder, the first movable part 312a can be connected to the lens holder. Therefore, the first movable part 312a can serve as a movable component of the first piezoelectric actuator 31, allowing the first piezoelectric actuator 31 to be connected to the first lens assembly 21 via the first movable part 312a. In addition, the first movable part 312a is also movably connected to the first sidewall M1 along the first direction X.

[0115] Furthermore, for example, the first piezoelectric actuator 31 also includes an elastic element 33, which can be connected to the side of the first piezoelectric vibrator 311a opposite to the first movable part 312a, and the elastic element 33 is also connected to the base 15, thereby allowing the first piezoelectric vibrator 311a to be elastically connected to the base 15 via the elastic element 33. Therefore, the elastic element 33 can also serve as a fixing member of the first piezoelectric actuator 31. For example, the aforementioned elastic element 33 can be a spring or a leaf spring.

[0116] Continue as Figure 6 As shown, the second piezoelectric actuator 32 includes a second piezoelectric vibrator 311b and a second movable part 312b. The second piezoelectric vibrator 311b is connected to the base 15. Similarly, the second piezoelectric vibrator 311b can serve as a fixing member for the second piezoelectric actuator 32, allowing the second piezoelectric actuator 32 to be connected to the base 15 via the second piezoelectric vibrator 311b. When the second piezoelectric actuator 32 is located on the side of the first sidewall M1 opposite to the second sidewall M2, the second piezoelectric vibrator 311b is located on the side where the first sidewall M1 is located.

[0117] Furthermore, the second movable part 312b is located between the second piezoelectric vibrator 311b and the first sidewall M1, and abuts against the second piezoelectric vibrator 311b. The second movable part 312b is connected to the second lens assembly 22. For example, when the second lens assembly 22 includes an optical lens and a lens holder, the second movable part 312b can be connected to the lens holder. Therefore, the second movable part 312b can serve as a movable component of the second piezoelectric actuator 32, allowing the second piezoelectric actuator 32 to be connected to the second lens assembly 22 via the second movable part 312b. The second movable part 312b is also movably connected to the first sidewall M1 along the first direction X. The working principles of the second piezoelectric vibrator 311b and the second movable part 312b are the same as those of the first piezoelectric vibrator 311a and the first movable part 312a, respectively, and will not be repeated here.

[0118] In some embodiments of this application, the following continues... Figure 6 As shown, the elastic element 33 is also connected to the side of the second piezoelectric vibrator 311b opposite to the second movable part 312b. At this time, when the first piezoelectric actuator 31 and the second piezoelectric actuator 32 are located on the same side of the base 15, the first piezoelectric actuator 31 and the second piezoelectric actuator 32 can share the same elastic element 33.

[0119] For example, the elastic element 33 can be connected to the first piezoelectric vibrator 311a of the first piezoelectric actuator 31 and the second piezoelectric vibrator 311b of the second piezoelectric actuator 32 via a dispensing process. Furthermore, both ends of the elastic element 33 can be connected to the base 15 via a dispensing process, allowing the first piezoelectric actuator 31 and the second piezoelectric actuator 32 to be elastically connected to the base 15 via the aforementioned elastic element 33. In this way, by sharing the same elastic element 33, the first piezoelectric actuator 31 and the second piezoelectric actuator 32 can reduce the number of components in the camera module 10, thus simplifying the product structure. Alternatively, the first piezoelectric actuator 31 and the second piezoelectric actuator 32 can have different elastic elements. For ease of description, the following examples all exemplify the first piezoelectric actuator 31 and the second piezoelectric actuator 32 sharing the same elastic element 33.

[0120] As another example, the aforementioned elastic element 33 may include an elastic portion and a rigid portion. The elastic portion may be located on the side where the first end a2 of the elastic element 33 is located, while the remaining portion of the elastic element 33 is the rigid portion. In this way, the rigid portion can be connected to the first piezoelectric oscillator 311a of the first piezoelectric actuator 31, while the elastic portion is connected to the base. Similarly, the first piezoelectric actuator 31 and the second piezoelectric actuator 32 can share the same elastic element, or they can be connected to different elastic elements respectively.

[0121] In addition, continue as Figure 6 As shown, when the first piezoelectric actuator 31 and the second piezoelectric actuator 32 share the same elastic element 33, the elastic element 33 is used to provide a preload to the first piezoelectric vibrator 311a to abut against the first movable part 312a, and to the second piezoelectric vibrator 311b to abut against the second movable part 312b. By connecting the elastic element 33 to the base 15, the first piezoelectric vibrator 311a of the first piezoelectric actuator 31, and the second piezoelectric vibrator 311b of the second piezoelectric actuator 32, a preload (perpendicular to the first movable part 312a and the second movable part 312b along the Y direction) can be applied to the first piezoelectric vibrator 311a in the first piezoelectric actuator 31 and the second piezoelectric vibrator 311b in the second piezoelectric actuator 32 through the elastic deformation of the elastic element 33.

[0122] In this way, continue as Figure 6As shown, the first piezoelectric vibrator 311a can be tightly abutted against the first movable part 312a under the action of pre-pressure, which is beneficial for transmitting the macroscopic displacement generated by the micro-vibration of the first piezoelectric vibrator 311a to the first movable part 312a. Similarly, the second piezoelectric vibrator 311b can be tightly abutted against the second movable part 312b under the action of pre-pressure, which is beneficial for transmitting the macroscopic displacement generated by the micro-vibration of the second piezoelectric vibrator 311b to the second movable part 312b.

[0123] In addition, such as Figure 7 As shown, during the vibration of the first piezoelectric vibrator 311a, since the first movable part 312a abuts against the first piezoelectric vibrator 311a, the first piezoelectric vibrator 311a can transmit the macroscopic displacement generated by the microscopic vibration to the first movable part 312a, and drive the first movable part 312a relative to the base 15 along the first direction X (e.g., ...). Figure 6 (As shown) Movement. Since the first movable part 312a is connected to the first mirror assembly 21, the first mirror assembly 21 can be driven to move relative to the base 15 along the first direction X under the drive of the first movable part 312a.

[0124] Continue as Figure 7 As shown, the first piezoelectric vibrator 311a abuts against the first movable part 312a, and the first movable part 312a is connected to the first mirror assembly 21. Therefore, there is no direct contact or connection between the first piezoelectric vibrator 311a and the first mirror assembly 21, and they are in a decoupled state. In this way, the tilt angle generated by the first piezoelectric vibrator 311a during vibration is not easily transmitted directly to the first mirror assembly 21, thereby enabling the first mirror assembly 21 to move stably along the first direction X, that is, the direction of the optical axis O1-O2 of the first mirror assembly 21, so as to reduce the probability of the first mirror assembly 21 shifting.

[0125] Furthermore, as can be seen from the above, Figure 6 The elastic element 33 shown is connected to the first piezoelectric vibrator 311a and the base 15, but has no direct connection to the first movable part 312a. Therefore, the static balance of the pre-pressure generated by the elastic element 33 occurs only between the base 15 and the first piezoelectric vibrator 311a, and does not affect the movement of the first movable part 312a. The technical effects of the second piezoelectric vibrator 311b and the second movable part 312b in the second piezoelectric actuator 32 are the same as described above, and will not be repeated here.

[0126] The following uses the first piezoelectric actuator 31 as an example to illustrate the specific structure of the first piezoelectric vibrator 311a, the connection relationship between the first movable part 312a and other components, and the other components of the first piezoelectric actuator 31. The arrangement of the second piezoelectric vibrator 311b and the second movable part 312b in the second piezoelectric actuator 32 can be obtained in the same way, and will not be described in detail.

[0127] In some embodiments of this application, the following continues... Figure 7 As shown, optionally, the first piezoelectric vibrator 311a includes a piezoelectric sheet 3110 and a contact bump 3111. The piezoelectric sheet 3110 is elastically connected to the base 15. Optionally, the piezoelectric sheet 3110 includes piezoelectric ceramic. The contact bump 3111 is disposed on the side of the piezoelectric sheet 3110 facing the first movable part 312a, and the contact bump 3111 contacts the first movable part 312a. The contact bump 3111 protrudes from the piezoelectric sheet 3110, resulting in a smaller contact area between the contact bump 3111 and the first movable part 312a. This allows the contact bump 3111 to serve as the starting point for the entire first piezoelectric vibrator 311a, which is beneficial for the first piezoelectric vibrator 311a to generate vibration.

[0128] Based on this, in order to more effectively transmit the force generated along the first direction X during the vibration of the first piezoelectric oscillator 311a to the first mirror assembly 21, such as... Figure 8 (for the following) Figure 7 As shown in the cross-sectional view obtained by cutting along the dashed lines A3-A4, optionally, the first piezoelectric actuator 31 further includes a third magnetic element 43 and a fourth magnetic element 44. For example, the third magnetic element 43 can be a magnet (or a magnetic sheet), and the fourth magnetic element 44 can be a magnetic sheet (or a magnet). Alternatively, for another example, both the third magnetic element 43 and the fourth magnetic element 44 can be magnets or magnetic sheets; this application does not limit this.

[0129] Continue as Figure 8 As shown, the third magnetic element 43 is located between the first movable part 312a and the first mirror assembly 21, and is connected to the first movable part 312a. The fourth magnetic element 44 is located between the first movable part 312a and the first mirror assembly 21, and is connected to the first mirror assembly 21. The third magnetic element 43 and the fourth magnetic element 44 are arranged sequentially along the first direction X, and are magnetically attracted to each other. Furthermore, the first movable part 312a is indirectly connected to the first mirror assembly 21 through the third magnetic element 43 and the fourth magnetic element 44.

[0130] In this way, continue as Figure 8As shown, along the first direction X, the first movable part 312a can be more tightly connected to the first mirror assembly 21 via the third magnetic element 43 and the fourth magnetic element 44. In this case, the third magnetic element 43 and the fourth magnetic element 44 can generate relative motion in the Z and Y directions, such as frictional motion. Therefore, during the relative motion of the third magnetic element 43 and the fourth magnetic element 44 in the Z and Y directions, the macroscopic displacement along the Z and Y directions caused by the micro-vibration of the first piezoelectric oscillator 311a can be counteracted, thereby reducing the phenomenon of offset along the Z and Y directions during the movement of the first mirror assembly 21.

[0131] Furthermore, along the first direction X, the third magnetic element 43 and the fourth magnetic element 44 can be tightly attracted, resulting in a small or almost negligible relative displacement between them. When the first piezoelectric oscillator 311a converts microscopic vibrations into macroscopic displacements along the first direction X, this displacement can be effectively transmitted to the first mirror assembly 21 through the tightly attracted third magnetic element 43 and fourth magnetic element 44, thereby improving the efficiency and accuracy of controlling the movement of the first mirror assembly 21 along the first direction X.

[0132] Figure 8 This example illustrates the application of a third magnetic element 43 and a fourth magnetic element 44 disposed along the first direction X between one side (i.e., the right side) of the first movable portion 312a and the first mirror assembly 21. In other embodiments of this application, the third magnetic element 43 and the fourth magnetic element 44 may be disposed along the first direction X between both sides (i.e., the left and right sides) of the first movable portion 312a and the first mirror assembly 21. Furthermore, the connection method and technical effect between the movable portion in the second piezoelectric actuator 32 and the second mirror assembly 22 are similar and will not be elaborated here. Alternatively, in other embodiments of this application, the first movable portion 312a and the first mirror assembly 21 may be connected by an adhesive layer or joined as a single structural component; this application does not limit this to such a configuration.

[0133] Furthermore, as can be seen from the above, such as Figure 9As shown, the first movable part 312a of the first piezoelectric actuator 31 is movably connected to the first sidewall M1. The following provides an example illustrating the movable connection between the first movable part 312a and the first sidewall M1. In some embodiments of this application, the receiving cavity 101 of the base 15 faces the sidewall of the first movable part 312a. For example, the first sidewall M1 has a third groove 503 and a fourth groove 504, which extend along the first direction X and are arranged side-by-side along the Z direction. The phrase "the third groove 503 and the fourth groove 504 extend along the first direction X" means that the direction of the maximum dimension, such as the length, of the third groove 503 and the fourth groove 504 is parallel to the first direction X.

[0134] In addition, continue as Figure 9 As shown, the first piezoelectric actuator 31 further includes at least one first ball 3112 and at least one second ball 3113. The first ball 3112 may be disposed on the side of the first movable portion 312a facing the receiving cavity 101, the first ball 3112 is in rolling connection with the third groove 503, and the first ball 3112 is in contact with the first movable portion 312a. The second ball 3113 is disposed on the side of the first movable portion 312a facing the receiving cavity 101, the second ball 3113 is in rolling connection with the fourth groove 504, and the second ball 3113 is in contact with the first movable portion 312a.

[0135] Figure 9 This example illustrates the concept using a first piezoelectric actuator 31 comprising two first balls 3112 and two second balls 3113. In this case, the process continues as follows... Figure 9 As shown, during the reciprocating motion of the first movable part 312a along the first direction X, the first ball 3112 can roll in the third groove 503, and the second ball 3113 can roll in the fourth groove 504. The third groove 503 and the fourth groove 504 can guide the movement direction of the first ball 3112 and the second ball 3113, respectively.

[0136] Since the extension directions of the third groove 503 and the fourth groove 504 are parallel to the first direction X, the first ball 3112 and the second ball 3113 roll along the first direction X. Furthermore, since the first ball 3112 is in contact with the first movable part 312a, and the second ball 3113 is in contact with the first movable part 312a, the first movable part 312a can be driven to reciprocate along the first direction X relative to the base 15 via the first ball 3112 and the second ball 3113.

[0137] In addition, continue as Figure 9As shown, by providing two strip-shaped grooves, namely a third strip-shaped groove 503 and a fourth strip-shaped groove 504, along the Z direction on the side wall of the receiving cavity 101 of the base 15 facing the first movable part 312a, the first movable part 312a can remain stable within the ZX surface during movement along the first direction X, reducing the occurrence of warping and thus improving the zoom and focus accuracy of the camera module. Alternatively, in some other embodiments of this application, the base 15 may be provided with a third strip-shaped groove 503 or a fourth strip-shaped groove 504, or three or more strip-shaped grooves; this application does not limit this to any particular type.

[0138] Based on this, in some embodiments of this application, such as Figure 10 (for the following) Figure 6 As shown in the sectional view obtained by cutting along the dashed lines A5-A6, the third groove 503 can be a V-groove. The fourth groove 504 can be a U-groove.

[0139] In this embodiment, the V-shaped groove refers to a groove in which two opposing sidewalls are inclined. Furthermore, the distance between the two opposing sidewalls is larger at the opening of the groove and smaller at the bottom, making the cross-section of the groove (parallel to the ZY plane) V-shaped or trapezoidal. The above is merely an example of a V-shaped groove and does not constitute a limitation on its structure, as long as the two opposing sidewalls are inclined and the distance between the two sidewalls at the opening is greater than the distance between the two sidewalls at the bottom, it is acceptable. Additionally, in this embodiment, the U-shaped groove refers to a groove in which two opposing sidewalls (e.g., Figure 10 In the middle, the two opposite sidewalls of the fourth groove 504 are arranged in parallel. This makes the cross-section of the groove (parallel to the ZY plane) U-shaped.

[0140] Based on this, on the one hand, continue as Figure 10 As shown, when the first ball 3112 can be located within the third groove 503, the first ball 3112 abuts against both opposite sidewalls of the third groove 503, meaning the first ball 3112 and both opposite sidewalls of the third groove 503 are in a zero-fit state. This limits the rolling direction of the first ball 3112 through the third groove 503. Consequently, the first ball 3112 rolls along the extending direction of the third groove 503, i.e., the first direction X, reducing the probability of the first ball 3112 deviating, and consequently reducing the probability of the first movable part 312a deviating when moving along the first direction X.

[0141] On the other hand, continue as Figure 10As shown, when the second ball 3113 can be located in the fourth groove 504, there can be a gap between the second ball 3113 and at least one side wall of the fourth groove 504. This gap allows the second ball 3113 to have a certain amount of room to move on the surface perpendicular to the first direction X (i.e., in the ZY plane), reducing the possibility of interference and preventing the first moving part 312a from getting stuck when it moves along the first direction X.

[0142] For example, such as Figure 11 (for the following) Figure 9 As shown in the schematic diagram obtained from the C direction in the figure, the first movable part 312a faces the base 15 (as shown in the figure). Figure 9 The surface of the first ball 3112 (or the second ball 3113) is provided with a groove 3100 for accommodating the first ball 3112 or the second ball 3113. In this way, a part of the first ball 3112 (or the second ball 3113) can be embedded in the groove 3100, and another part can be embedded in the third groove 503 (or the fourth groove 504), thereby preventing the first ball 3112 (or the second ball 3113) from falling off during the movement of the first movable part 312a along the first direction X.

[0143] The above example illustrates the movement of the first movable part 312a relative to the base 15 along the first direction X via the first ball 3112 and the second ball 3113. In other embodiments of this application, such as... Figure 12 (for the following) Figure 9 As shown in another schematic diagram obtained from the C direction in the diagram, when the third groove 503 and the fourth groove 504 are provided on the side wall of the receiving cavity 101 of the base 15 facing the first active part 312a, the first piezoelectric actuator also includes a first slider 3114 and a second slider 3115.

[0144] Continue as Figure 12 As shown, the first slider 3114 is disposed on the first movable part 312a facing the receiving cavity 101 (e.g. Figure 9 On one side (as shown), the first slider 3114 is connected to the first movable part 312a. For example, the first slider 3114 can be glued to the first movable part 312a, or the first slider 3114 and the first movable part 312a can be connected as a single unit. The second slider 3115 is disposed on the first movable part 312a facing the receiving cavity 101 (as shown). Figure 9 On one side (as shown), the second slider 3115 is connected to the first movable part 312a, and the connection method is the same as described above, so it will not be repeated here. For example, the first slider 3114 or the second slider 3115 can be... Figure 12 The semi-cylindrical structure shown can also be a hemispherical protrusion structure.

[0145] Based on this, the first slider 3114 and the third strip groove 503 (as shown) Figure 10 (As shown) a sliding connection, the second slider 3115 and the fourth slot 504 (as shown) Figure 10 (As shown) a sliding connection. In this case, during the reciprocating motion of the first movable part 312a along the first direction X, the first slider 3114 can slide within the third groove 503, and the second slider 3115 can slide within the fourth groove 504. The third groove 503 and the fourth groove 504 can guide the movement direction of the first slider 3114 and the second slider 3115, respectively. Since the extension direction of the third groove 503 and the fourth groove 504 is parallel to the first direction X, the first slider 3114 and the second slider 3115 slide along the first direction X. Based on this, since the first slider 3114 is connected to the first movable part 312a, and the second slider 3115 is in contact with the first movable part 312a, the first movable part 312a can be driven to reciprocate along the first direction X relative to the base 15 by the first slider 3114 and the second slider 3115.

[0146] Similarly, the third slot 503 that slides in conjunction with the first slider 3114 can be... Figure 10 The V-shaped groove shown is accompanied by a U-shaped groove in the fourth groove 504 that slides with the second slider 3115. The shape and technical effect of the third groove 503 and the fourth groove 504 are the same as described above, and will not be repeated here.

[0147] As described above, the first piezoelectric actuator 31 and the second piezoelectric actuator 32 can both be located on the same side wall of the base 15. For example, the first piezoelectric actuator 31 and the second piezoelectric actuator 32 can both be located on the side of the first side wall M1 facing away from the second side wall M2. Furthermore, to improve the zoom and focus accuracy of the camera module 10, the first lens assembly 21 and the second lens assembly 22 can also be coaxially arranged. The following example illustrates a scheme where the first piezoelectric actuator 31 and the second piezoelectric actuator 32 are located on the same side, and the first lens assembly 21 and the second lens assembly 22 are coaxially arranged.

[0148] In some embodiments of this application, in order to allow the first mirror assembly 21 and the second mirror assembly 22 to slide relative to the base 15 along a first direction X, such as Figure 13As shown, the camera module 10 also includes a first sliding shaft 61 and a second sliding shaft 62. Along the first direction X, both ends of the first sliding shaft 61 are connected to the base 15. The first lens assembly 21 and the second lens assembly 22 are both slidably engaged with the first sliding shaft 61. Similarly, along the first direction X, both ends of the second sliding shaft 62 are connected to the base 15. The first lens assembly 21 and the second lens assembly 22 are both slidably engaged with the second sliding shaft 62. For example, if the first lens assembly 21 or the second lens assembly 22 includes a lens holder for supporting optical lenses, the lens holder of the first lens assembly 21 or the second lens assembly 22 can slidably engage with the aforementioned first sliding shaft 61 and second sliding shaft 62.

[0149] As described above, the first piezoelectric actuator 31 and the second piezoelectric actuator 32, located on the same sidewall (e.g., the first sidewall M1) of the base 15, are respectively connected to the first mirror assembly 21 and the second mirror assembly 22. For example, the first movable part 312a in the first piezoelectric actuator 31 is connected to the first mirror assembly 21, and the movable part ( Figure 13 (Not shown in the image) is connected to the second mirror assembly 22. In this way, the first mirror assembly 21 driven by the first piezoelectric actuator 31 can move along the same sliding shaft as the second mirror assembly 22 driven by the second piezoelectric actuator 32, for example, along the extension direction of the first sliding shaft 61 (or the second sliding shaft 62) (i.e., the optical axis O1-O2 direction of the first mirror assembly 21). In this case, the first sliding shaft 61 and the second sliding shaft 62 can guide the movement direction of the first mirror assembly 21 and the second mirror assembly 22, so that multiple mirror groups, such as the first mirror assembly 21 and the second mirror assembly 22, can move coaxially.

[0150] In related technologies, when multiple moving-magnet voice coil motors drive multiple mirror groups respectively, magnetic field interference between the multiple voice coil motors affects the tilt angle between different mirror groups. This prevents the multiple voice coil motors from being located on the same side of the base, thus hindering coaxial sliding of the multiple mirror groups. The tilt angle between mirror groups refers to the relative angle between the center of the lens holder and a preset reference line.

[0151] In comparison, the camera module 10 provided in this application embodiment does not require the aforementioned voice coil motor. As a result, during the zooming or focusing process of the camera module 10, since the multiple lens groups, such as the first lens group assembly 21 and the second lens group assembly 22, can slide coaxially, the sliding references (e.g., sliding direction, sliding friction, and stroke error) of the first lens group assembly 21 and the second lens group assembly 22 are consistent, thereby improving the zooming or focusing accuracy of the entire camera module 10.

[0152] On the other hand, when the first lens assembly 21 and the second lens assembly 22 are coaxial, and the first piezoelectric actuator 31 and the second piezoelectric actuator 32 are located on the same side, such as the first sidewall M1, the first lens assembly 21 and the second lens assembly 22 can share a travel space along the first direction X within the receiving cavity 101. In this case, at least a portion of the space (i.e., the travel space) in which the first lens assembly 21 moves along the first direction X within the receiving cavity 101 can also be reused as the space in which the second lens assembly 22 moves along the first direction X within the receiving cavity 101. Therefore, compared to the scheme where the first lens assembly 21 and the second lens assembly 22 each use independent travel spaces, the size of the camera module 10 along the first direction X can be effectively reduced, thereby facilitating the miniaturization of the camera module 10.

[0153] Figure 13 This example illustrates the use of a camera module 10 equipped with two sliding shafts, such as a first sliding shaft 61 and a second sliding shaft 62. In this configuration, driven by the first piezoelectric actuator 31 and the second piezoelectric actuator 32 respectively, the first lens assembly 21 and the second lens assembly 22 can move not only along the extension direction of the first sliding shaft 61 but also along the extension direction of the second sliding shaft 62. The extension directions of the first sliding shaft 61 and the second sliding shaft 62 can be the same, for example, both along the optical axis O1-O2 direction (i.e., the X direction) of the first lens assembly 21. For example, the first sliding shaft 61 and the second sliding shaft 62 can be positioned close to the first sidewall M1 and the second sidewall M2 of the base 15 respectively, creating a gap between them. This allows for guidance of the two ends of the first lens assembly 21 and the second lens assembly 22 along the Y direction, resulting in smoother sliding of the first lens assembly 21 and the second lens assembly 22.

[0154] In some other embodiments of this application, only one sliding shaft may be provided, such as only the first sliding shaft 61 or only the second sliding shaft 62. Alternatively, three or more sliding shafts may be provided, and this application does not limit this. For ease of explanation, the following description uses the example of the camera module 10 including the first sliding shaft 61 and the second sliding shaft 62.

[0155] Based on this, such as Figure 14 As shown, optionally, a first groove 211 is formed on the first mirror assembly 21. The first groove 211 can extend along the first direction X, and the first groove 211 slides in cooperation with the first sliding shaft 61. Figure 15 As shown (along) Figure 14(A cross-sectional view obtained by cutting along the dashed lines A7-A8 in the figure), the first groove 211 is a V-groove. For example, when the first lens assembly 21 includes a lens holder for supporting optical lenses, the aforementioned first groove 211 can be formed on the lens holder. The description of the V-groove is the same as above and will not be repeated here.

[0156] In addition, continue as Figure 14 As shown, optionally, a second slot 212 is provided on the first mirror assembly 21. The second slot 212 can extend along the first direction X, and the second slot 212 slides in cooperation with the second sliding shaft 62. Figure 15 As shown, the second groove 212 can be formed on the lens holder. For example, the second groove 212 can be... Figure 15 The L-shaped groove shown. Alternatively, the second groove 212 can be... Figure 16 (for the following) Figure 14 The U-shaped groove is shown in another sectional view obtained by cutting along the dashed lines A7-A8 in the figure. The description of the U-shaped groove is the same as above, and the description of the L-shaped groove can be obtained similarly, so it will not be repeated here.

[0157] Based on this, on the one hand, continue as Figure 15 As shown, when the first slot 211 and the first sliding shaft 61 are in sliding engagement, the two opposite sidewalls of the first sliding shaft 61 and the first slot 211 are in contact, meaning that the two opposite sidewalls of the first sliding shaft 61 and the first slot 211 are in a zero-fit state. This allows the first slot 211 to limit the sliding direction of the first mirror assembly 21. Consequently, the first mirror assembly 21 slides along the extension direction of the first sliding shaft 61, i.e., the first direction X, reducing the probability of the first mirror assembly 21 shifting.

[0158] On the other hand, continue as Figure 15 As shown, when the second groove 212 and the second sliding shaft 62 are in sliding engagement, there can be a gap between the second sliding shaft 62 and at least one side wall of the second groove 212. This gap allows the second sliding shaft 62 to have a certain amount of room to move on the surface perpendicular to the first direction X (i.e., in the ZY plane), reducing the possibility of interference and preventing jamming when the first mirror assembly 21 moves along the first direction X.

[0159] Similarly, continue as follows Figure 14As shown, the second mirror assembly 22 has a fifth groove 213 extending along the first direction X, and the fifth groove 213 is slidably engaged with the first sliding shaft 61. The shape of the fifth groove 213 is the same as the shape of the first groove 211. For example, if the shape of the first groove 211 is a V-groove, the shape of the fifth groove 213 is also a V-groove. Furthermore, the second mirror assembly 22 has a sixth groove 214 extending along the first direction X, and the sixth groove 214 is slidably engaged with the second sliding shaft 62. The shape of the sixth groove 214 is the same as the shape of the second groove 212. For example, if the shape of the second groove 212 is an L-groove or a U-groove, the shape of the sixth groove 214 is also an L-groove or a U-groove. In this way, the strip grooves that mate with the same sliding shaft can be made to have the same shape, thereby limiting the sliding of the first mirror assembly 21 and the second mirror assembly 22 while avoiding the aforementioned jamming phenomenon.

[0160] Based on this, in order to improve the motion stability of the first mirror assembly 21 during the sliding process along the first sliding shaft 61 and the second sliding shaft 62, optionally, such as Figure 15 The first sliding shaft 61 and the second sliding shaft 62 shown are both metal shafts. In addition, the camera module 10 may also include a first magnetic element 611 and a second magnetic element 612.

[0161] Continue as Figure 14 As shown, a first magnetic element 611 is disposed on the first mirror assembly 21. For example, the first magnetic element 611 can be attached to the surface of the first mirror assembly 21 facing away from the first sliding shaft 61. Alternatively, for another example, a groove can be formed on the surface of the first mirror assembly 21 facing away from the first sliding shaft 61, and the first magnetic element 611 can be installed in the groove. Furthermore, the vertical projection of the first magnetic element 611 onto the first mirror assembly 21 can overlap with the vertical projection of the first sliding shaft 61 onto the first mirror assembly 21, causing the first magnetic element 611 to attract the first sliding shaft 61. In this way, along the Z-direction, the first magnetic element 611 can correspond vertically to the first sliding shaft 61, thereby increasing the attraction between the first magnetic element 611 and the first sliding shaft 61, making the movement of the first mirror assembly 21 more stable during sliding along the first sliding shaft 61.

[0162] Similarly, continue as follows Figure 14As shown, the second magnetic element 612 is disposed on the first mirror assembly 21. The vertical projection of the second magnetic element 612 onto the first mirror assembly 21 overlaps with the vertical projection of the second sliding shaft 62 onto the first mirror assembly 21, and the second magnetic element 612 and the second sliding shaft 62 are attracted to each other. The arrangement and technical effect of the second magnetic element 612 and the second sliding shaft 62 are the same as described above, and will not be repeated here.

[0163] For example, the first magnetic element 611 and the second magnetic element 612 mentioned above can be magnets or magnetic sheets. In addition, the side of the second mirror assembly 22 opposite to the first sliding shaft 61 and the second sliding shaft 62 can also be provided with a magnetic element that attracts the first sliding shaft 61 and the second sliding shaft 62. The arrangement and technical effect of the magnetic element are the same as described above, and will not be repeated here.

[0164] As can be seen from the above, Figure 14 The first piezoelectric actuator 31 drives the first lens assembly 21 to reciprocate along the first direction X, and the second piezoelectric actuator 32 drives the second lens assembly 22 to reciprocate along the first direction X, thereby achieving zooming or focusing. In other embodiments of this application, such as Figure 17 As shown, the camera module 10 also includes a third lens assembly 25, which is located on the light-incident side of the first optical path deflector 23. This third lens assembly 25 can be coupled to the base 15 (e.g., along the first direction X) in a direction X. Figure 18 (As shown) a sliding connection, and the optical axis direction O3-O4 of the third mirror group assembly 25 is perpendicular to the first direction X.

[0165] During its movement along the first direction X, the aforementioned third lens assembly 25 can work in conjunction with other lens groups to switch the focal length of the camera module 10. This application does not limit the range of focal lengths that can be switched. For example, the third lens assembly 25 may include at least one optical lens. Alternatively, for another example, the third lens assembly 25 may include at least one optical lens and a lens holder for supporting the optical lens.

[0166] Based on this, in order to drive the third mirror assembly 25 to move along the first direction X, such as Figure 18 As shown, the camera module 10 also includes a drive device 34, a portion of which (e.g., as a fixing member) can be connected to the base 15. Furthermore, another portion of the drive device 34 (e.g., as a moving member) can be connected to the third lens assembly 25, the drive device 34 being used to drive the third lens assembly 25 to slide along a first direction X.

[0167] Continue as Figure 18 As shown above, the receiving cavity 101 of the base 15 has a first sidewall M1 and a second sidewall M2 that are oppositely disposed and parallel to the first direction X. Figure 13When the first piezoelectric actuator 31 and the second piezoelectric actuator 32 are located on the first sidewall M1 away from the second sidewall M2, and the driving device 34 is a third piezoelectric actuator, the third piezoelectric actuator, i.e. Figure 18 The driving device 34 shown can be located on the side of the second sidewall M2 opposite to the first sidewall M1. In this way, the driving device 34 and the first piezoelectric actuator 31 (or the second piezoelectric actuator 32) can be disposed on opposite sides of the receiving cavity 101, thereby reducing the size of the camera module 10 along the first direction X. Alternatively, in some embodiments of this application, the first piezoelectric actuator 31, the second piezoelectric actuator 32, and the driving device 34 can be located on the same side of the base 15, for example, all on the side where the first sidewall M1 (or the second sidewall M2) is located.

[0168] Similarly, when the drive device 34 is a third piezoelectric actuator, the process continues as follows: Figure 18 As shown, the driving device 34 may include the aforementioned third piezoelectric vibrator 311c and third movable part 312c. The third piezoelectric vibrator 311c of the driving device 34 can be connected to the base 15 as a fixing member of the driving device 34, and the third movable part 312c can be connected to the third mirror assembly 25 as a movable member of the driving device 34. The structure and technical effects of the third piezoelectric vibrator 311c and the third movable part 312c are the same as described above and will not be repeated here. Furthermore, the driving device 34 may also include the aforementioned elastic member, the arrangement and technical effects of which are the same as described above and will not be repeated here.

[0169] Alternatively, in some other embodiments of this application, the aforementioned driving device 34 may optionally be a voice coil motor. For example... Figure 19 As shown, the drive device 34 for the voice coil motor includes a coil 332 and a magnet 331. When the voice coil motor is a moving magnet type, the coil 332 is connected to the base 15, and the magnet 331 is connected to the third mirror assembly 25. During its movement relative to the coil 332, the magnet 331 drives the third mirror assembly 25 to move relative to the base 15 along the first direction X. Alternatively, when the voice coil motor is a moving coil type, the coil 332 is connected to the third mirror assembly 25, and the magnet 331 is connected to the base 15. During its movement relative to the magnet 331, the coil 332 drives the third mirror assembly 25 to move relative to the base 15 along the first direction X. This application does not limit the type of the drive device 34 described above; for ease of explanation, the following description uses a third piezoelectric actuator as an example.

[0170] The following description illustrates the sliding of the first piezoelectric actuator 31, the second piezoelectric actuator 32, and the drive device 34 relative to the base 15 along the first direction X. In some embodiments of this application, such as... Figure 20As shown, optionally, the camera module 10 includes a first sliding shaft 61 and a second sliding shaft 62, which are connected to the base 15 (e.g., Figure 18 As shown in the figure, the connection methods of the first mirror group component 21 and the second mirror group component 22 are the same as described above, and will not be repeated here.

[0171] In addition, continue as Figure 20 As shown, the camera module 10 also includes a third sliding shaft 63 and a fourth sliding shaft 64. Specifically, along the first direction X, both ends of the third sliding shaft 63 are connected to the base 15 (as shown in the image). Figure 18 (As shown) Connection. The third sliding shaft 63 is located away from the receiving cavity 101 of the first sliding shaft 61 (as shown). Figure 18 On one side (as shown), i.e. along the Z direction, the third sliding shaft 63 can be located above the first sliding shaft 61. Furthermore, the third mirror assembly 25 slides in conjunction with the third sliding shaft 63.

[0172] Continue as Figure 20 As shown, along the first direction X, the two ends of the fourth sliding shaft 64 are connected to the base 15 (as shown). Figure 18 (As shown) Connection. The fourth sliding shaft 64 is located opposite to the receiving cavity 101 of the second sliding shaft 62 (as shown). Figure 18 On one side (as shown), i.e. along the Z direction, the fourth sliding shaft 64 can be located above the second sliding shaft 62. Furthermore, the third lens assembly 25 is slidably engaged with the fourth sliding shaft 64. For example, if the third lens assembly 25 includes a lens holder for supporting optical lenses, the lens holder of the third lens assembly 25 can be slidably engaged with the aforementioned third sliding shaft 63 and fourth sliding shaft 64. In this way, the aforementioned third sliding shaft 63 and fourth sliding shaft 64 can guide the movement direction of the third lens assembly 25, reducing deviation during the sliding process of the third lens assembly 25.

[0173] As can be seen from the above, continuing as follows Figure 20 As shown, along the Z direction, the third sliding shaft 63 can be located above the first sliding shaft 61, and the fourth sliding shaft 64 can be located above the second sliding shaft 62. Therefore, the third lens assembly 25, which slides in cooperation with the third sliding shaft 63 and the fourth sliding shaft 64, can be located above the first lens assembly 21 and the second lens assembly 22. In this way, the third lens assembly 25 can occupy the space in the first X direction, thereby reducing the size of the camera module 10 along the first X direction.

[0174] Figure 20The example given is a camera module 10 equipped with two sliding shafts slidably connected to the third lens assembly 25, such as the third sliding shaft 63 and the fourth sliding shaft 64. In this case, driven by the drive device 34, the third lens assembly 25 can move not only along the extension direction of the third sliding shaft 63, but also along the extension direction of the fourth sliding shaft 64. The extension directions of the third sliding shaft 63 and the fourth sliding shaft 64 can be the same, for example, both along the first direction X.

[0175] For example, the third slide shaft 63 and the fourth slide shaft 64 can be located close to the base 15 (e.g. Figure 18 The first sidewall M1 and the second sidewall M2 (as shown) are configured such that there is a gap between the third sliding shaft 63 and the fourth sliding shaft 64, thereby guiding both ends of the third mirror assembly 25 along the Y direction and making the third mirror assembly 25 more stable during sliding. In some other embodiments of this application, only one sliding shaft may be provided, for example, only the third sliding shaft 63 or only the fourth sliding shaft 64. Alternatively, three or more sliding shafts may be provided, and this application is not limited to this.

[0176] The above example illustrates the situation with the third mirror assembly 25 positioned above the first mirror assembly 21 and the second mirror assembly 22. In other embodiments of this application, such as... Figure 21 As shown, the camera module 10 includes a first sliding shaft 61 and a second sliding shaft 62. With the first and second sliding shafts 61 and 62 connected to the base 15 in the same manner as described above, the first lens assembly 21, the second lens assembly 22, and the third lens assembly 25 are all slidably engaged with the first sliding shaft 61, and the first lens assembly 21, the second lens assembly 22, and the third lens assembly 25 are all slidably engaged with the second sliding shaft 62. In this way, the first lens assembly 21, the second lens assembly 22, and the third lens assembly 25 can move along the same sliding shaft, for example, along the extending direction of the first sliding shaft 61 (or the second sliding shaft 62), thereby reducing the number of sliding shafts and simplifying the structure of the camera module 10.

[0177] For example, in such Figure 20 The drive unit 34 shown drives the third mirror assembly 25. Figure 21 When the first piezoelectric actuator 31 drives the first mirror assembly 21 and the second piezoelectric actuator 32 drives the second mirror assembly 22, the third mirror assembly 25 can move in the same direction as the first mirror assembly 21 and the second mirror assembly 22 in the first direction X. For example, the third mirror assembly 25, the first mirror assembly 21 and the second mirror assembly 22 can all move to the right in the first direction X, or all move to the left in the first direction X.

[0178] Alternatively, as another example, the third mirror assembly 25 can move in the opposite direction to the first mirror assembly 21 or the second mirror assembly 22 in the first direction X. For example, when the third mirror assembly 25 moves to the right in the first direction X, the first mirror assembly 21 or the second mirror assembly 22 can move to the left in the first direction X. Or, when the third mirror assembly 25 moves to the left in the first direction X, the first mirror assembly 21 or the second mirror assembly 22 can move to the right in the first direction X.

[0179] Alternatively, in some other embodiments of this application, it may be unnecessary to separately provide a driver for moving the third mirror assembly 25 along the first direction X; instead, the third mirror assembly 25 may be driven by the first piezoelectric driver 31 or the second piezoelectric driver 32. For example, Figure 22 As shown, the third mirror assembly 25 is connected to the first piezoelectric actuator 31. For example, if the first piezoelectric actuator 31 includes a first movable portion 312a, the first movable portion 312a of the first piezoelectric actuator 31 can also be connected to the third mirror assembly 25. In this case, while driving the first mirror assembly 21 to slide along the first direction X, the first piezoelectric actuator 31 is also used to drive the third mirror assembly 25 to slide along the first direction X.

[0180] For example, such as Figure 23 As shown, the third mirror assembly 25 is connected to the second piezoelectric actuator 32. For example, if the second piezoelectric actuator 32 includes a second movable portion 312b, the second movable portion 312b of the second piezoelectric actuator 32 can also be connected to the third mirror assembly 25. In this case, while driving the second mirror assembly 22 to slide along the first direction X, the second piezoelectric actuator 32 is also used to drive the third mirror assembly 25 to slide along the first direction X.

[0181] Depend on Figure 22 and Figure 23 It is understood that in the camera module 10, there is no need to set up a separate driver for driving the third lens group assembly 25 to move along the first direction X. By sharing the same driver with the first lens group assembly 21 or the second lens group assembly 22, the number of components in the camera module 10 can be reduced, thereby simplifying the structure of the camera module 10.

[0182] For ease of explanation, the following will all use the format of... Figure 24The example shown illustrates how the first piezoelectric actuator 31 and the second piezoelectric actuator 32, which are used to drive the first mirror assembly 21 and the second mirror assembly 22, are located on the same side (e.g., the side where the first sidewall M1 is located), while the drive device 34, which is used to drive the third mirror assembly 25, is located on the other side (e.g., the side where the second sidewall M2 is located). Based on this, the following example illustrates the arrangement of displacement detection for the first mirror assembly 21, the second mirror assembly 22, and the drive device 34.

[0183] As can be seen from the above in some embodiments of this application, the base 15 may have the following characteristics: Figure 24 The shown receiving cavity 101 has a first sidewall M1 and a second sidewall M2 that are oppositely disposed and parallel to the first direction X. In this case, the camera module 10 may further include, as Figure 25 (for the following) Figure 24 The diagram shows a fifth magnetic element 201, a sixth magnetic element 203, and at least three first displacement detectors 202. The fifth magnetic element 201, the sixth magnetic element 203, and the first displacement detectors 202 can be used as components for displacement detection of the first mirror assembly 21 and the second mirror assembly 22.

[0184] Continue as Figure 25 As shown, the fifth magnetic element 201 can be connected to the first mirror assembly 21. The fifth magnetic element 201 is used to generate a magnetic field. The sixth magnetic element 203 is connected to the second mirror assembly (22), and the sixth magnetic element (203) is used to generate a magnetic field. For example, the fifth magnetic element 201 is a magnetic grating or a magnet. Furthermore, the aforementioned at least three first displacement detectors 202 are connected to the base 15. And, along the first direction X, at least three first displacement detectors 202 are spaced apart within the travel range L1 of the first mirror assembly 21 and the second mirror assembly 22. The travel range L1 of the first mirror assembly 21 and the second mirror assembly 22 refers to the range within which the first mirror assembly 21 and the second mirror assembly 22 move from left to right or from right to left along the first direction X within the receiving cavity 101.

[0185] For example, the aforementioned at least three first displacement detectors 202 can be disposed on the inner surface of the first sidewall M1 facing the receiving cavity 101. The fifth magnetic element 201 can be disposed on the side of the first mirror assembly 21 facing the first sidewall M1, and the sixth magnetic element 203 can be disposed on the side of the second mirror assembly 22 facing the first sidewall M1. This allows the fifth magnetic element 201 and the sixth magnetic element 203 to overlap with the positions of the aforementioned at least three first displacement detectors 202 as they move along with the first mirror assembly 21 and the second mirror assembly 22, respectively. For instance, when the fifth magnetic element 201 (or the sixth magnetic element 203) overlaps with one of the first displacement detectors 202 during its movement, that first displacement detector 202 can detect the magnetic field of the fifth magnetic element 201 (or the sixth magnetic element 203).

[0186] Wherein, the overlap of the fifth magnetic element 201 (or the sixth magnetic element 203) with a first displacement detector 202 means that at least a portion of the vertical projection of the fifth magnetic element 201 (or the sixth magnetic element 203) on the first sidewall M1 overlaps with the vertical projection of the first displacement detector 202 on the first sidewall M1.

[0187] Alternatively, as another example, the aforementioned at least three first displacement detectors 202 may be disposed at the bottom of the receiving cavity 101. The fifth magnetic element 201 may be disposed on the surface of the first mirror assembly 21 facing the bottom of the receiving cavity 101, and the sixth magnetic element 203 may be disposed on the surface of the second mirror assembly 22 facing the bottom of the receiving cavity 101.

[0188] In some embodiments of this application, the first displacement detector 202 described above can be a Hall sensor. The Hall sensor operates based on the Hall effect, which states that when current flows through a conductor, if the conductor is in a magnetic field (e.g., the magnetic field provided by the fifth magnetic element 201 and the sixth magnetic element 203 described above), a potential difference will be generated across the conductor. This potential difference is related to the strength and direction of the magnetic field, and therefore can be used to detect the strength and direction of the magnetic field.

[0189] Alternatively, in some other embodiments of this application, the first displacement detector 202 described above is a tunnel magnetoresistive (TMR) sensor. The working principle of a TMR sensor is based on the magnetotunneling resistance effect, which involves forming a structure with two magnetic layers sandwiched between a non-magnetic layer. When an external magnetic field (e.g., the magnetic field provided by the fifth magnetic element 201 and the sixth magnetic element 203 described above) interacts with the magnetic field in the magnetic layers, the direction of the magnetic field changes, thereby altering the value of the magnetotunneling resistance. This change in resistance value is related to the change in the external magnetic field and can therefore be used to detect the strength and direction of the magnetic field.

[0190] Based on this, within the travel range L1, as the fifth magnetic element 201 (or the sixth magnetic element 203) moves along with the first mirror group assembly 21 (or the second mirror group assembly 22), the above-mentioned at least three first displacement detectors 202 can be used to jointly detect the magnetic field of the fifth magnetic element 201 and the sixth magnetic element 203. The processor obtains the displacement of the first mirror group assembly 21 or the second mirror group assembly 22 based on the detection results of the above-mentioned at least three first displacement detectors 202, thereby achieving precise control of the displacement.

[0191] When the displacement of the first mirror assembly 21 and the second mirror assembly 22 is a long stroke (e.g., a maximum of 10 mm or more), by arranging at least three spaced first displacement detectors 202 within the stroke range L1 of the first mirror assembly 21 and the second mirror assembly 22, the at least three first displacement detectors 202 can jointly detect changes in the magnetic field, avoiding detection blind spots in the middle region of the long stroke, thereby improving the displacement control accuracy of the first mirror assembly 21 and the second mirror assembly 22.

[0192] The above example illustrates the connection between a magnetic component and a mirror group, and the connection between a detector and a base. In other embodiments of this application, such as... Figure 26 (for the following) Figure 24 As shown in another schematic diagram obtained in direction E), the camera module may include two displacement detectors (e.g., Hall sensors or TMR sensors) connected to the first lens assembly 21 and the second lens assembly 22 respectively, and a magnetic component (e.g., a magnetic grating and a magnet) connected to the base 15. The dimension of the magnetic component along the first direction X can be approximately equal to the length of the travel range L1 of the first lens assembly 21 and the second lens assembly 22. The working principle of the displacement sensors and the magnetic component is as described above, and will not be repeated here. Similarly, as can be seen from the above, as... Figure 24 As shown, the drive unit 34 for driving the third lens assembly 25 is located on the side where the second sidewall M2 is located. In this case, the camera module 10 may also include, as Figure 27 (for the following) Figure 24 The seventh magnetic element 301 and two second displacement detectors 302 shown in the diagram (another schematic diagram obtained in direction E) can be used as components for displacement detection of the third mirror assembly 25.

[0193] The seventh magnetic element 301 is connected to the third mirror assembly 25 and is used to generate a magnetic field. The second displacement detector 302 is connected to the base (15). Similarly, for example, the second displacement detector 302 can be disposed on the inner surface of the second sidewall M2 facing the receiving cavity 101. The seventh magnetic element 301 can be disposed on the side of the third mirror assembly 25 facing the second sidewall M2. Alternatively, the second displacement detector 302 can be disposed at the bottom of the receiving cavity 101. The seventh magnetic element 301 can be disposed on the surface of the third mirror assembly 25 facing the bottom of the receiving cavity 101. The seventh magnetic element 301 can be a magnetic ruler or a magnet, used to generate a magnetic field. The second displacement detector 302 can be a Hall sensor or a TMR sensor. The displacement detection method of the second displacement detector 302 is the same as described above, and will not be repeated here.

[0194] Along the first direction X, two second displacement detectors 302 are spaced apart at both ends of the travel range L2 of the third mirror assembly 25. The travel range L2 of the third mirror assembly 25 refers to the range within the receiving cavity 101 where the third mirror assembly 25 moves from left to right or from right to left along the first direction X. Furthermore, by arranging a second displacement detector 302 at each end of the travel range L2 of the third mirror assembly 25, when one second displacement detector 302 detects the magnetic field strength, the other second displacement detector 302 can perform auxiliary detection of the magnetic field strength, thereby improving the accuracy of displacement detection. No further displacement detectors are needed in the middle of the travel range L2 of the third mirror assembly 25, thus simplifying the structure and reducing costs.

[0195] The above example illustrates the connection between a magnetic component and a mirror group, and the connection between a detector and a base. In other embodiments of this application, such as... Figure 28 (for the following) Figure 24 As shown in another schematic diagram obtained in direction E), the camera module may include a displacement detector (e.g., a Hall sensor or a TMR sensor) connected to the third lens assembly 25, and a magnetic element (e.g., a magnetic grating and a magnet) connected to the base 15. The dimension of the magnetic element along the first direction X may be comparable to the length of the travel range L2 of the third lens assembly 25. The operating principles of the displacement sensor and the magnetic element are as described above and will not be repeated here.

[0196] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A camera module (10), characterized in that, include: Base (15); First mirror assembly (21); the first mirror assembly (21) is movably connected to the base (15) along a first direction (X); the optical axis of the first mirror assembly (21) is parallel to the first direction (X); The second mirror assembly (22) is arranged sequentially along the first direction (X) and the first mirror assembly (21) is movably connected to the base (15) along the first direction (X); the optical axis of the second mirror assembly (22) is parallel to the first direction (X). A first piezoelectric actuator (31) is connected in part to the base (15) and in another part to the first mirror assembly (21). The first piezoelectric actuator (31) is used to drive the first mirror assembly (21) to move along the first direction (X). A second piezoelectric actuator (32) is connected in part to the base (15) and in another part to the second mirror assembly (22). The second piezoelectric actuator (32) is used to drive the second mirror assembly (22) to move along the first direction (X).

2. The camera module (10) according to claim 1, characterized in that, The base (15) has a receiving cavity (101); The receiving cavity (101) has a first sidewall (M1) and a second sidewall (M2) that are oppositely disposed and parallel to the first direction (X); The first piezoelectric actuator (31) and the second piezoelectric actuator (32) are both located on the side of the first sidewall (M1) away from the second sidewall (M2).

3. The camera module (10) according to claim 2, characterized in that, The first piezoelectric actuator (31) includes: The first piezoelectric vibrator (311a) is connected to the base (15); The first movable part (312a) is located between the first piezoelectric vibrator (311a) and the first sidewall (M1), and the first movable part (312a) abuts against the first piezoelectric vibrator (311a); the first movable part (312a) is connected to the first mirror assembly (21), and the first movable part (312a) is also movably connected to the first sidewall (M1) along the first direction (X).

4. The camera module (10) according to claim 3, characterized in that, The first piezoelectric actuator (31) further includes: An elastic element (33) is connected to the side of the first piezoelectric vibrator (311a) away from the first movable part (312a); the elastic element (33) is also connected to the base (15), and the elastic element (33) is used to provide the first piezoelectric vibrator (311a) with a pre-pressure that abuts against the first movable part (312a).

5. The camera module (10) according to claim 4, characterized in that, The second piezoelectric actuator (32) includes: The second piezoelectric vibrator (311b) is connected to the base (15); The second movable part (312b) is located between the second piezoelectric vibrator (311b) and the first sidewall (M1), and the second movable part (312b) abuts against the second piezoelectric vibrator (311b); the second movable part (312b) is connected to the second mirror assembly (22), and the second movable part (312b) is also movably connected to the first sidewall (M1) along the first direction (X); The elastic element (33) is also connected to the side of the second piezoelectric vibrator (311b) opposite to the second movable part (312b).

6. The camera module (10) according to any one of claims 1-5, characterized in that, The camera module (10) also includes: First sliding shaft (61); along the first direction (X), both ends of the first sliding shaft (61) are connected to the base (15); the first mirror assembly (21) and the second mirror assembly (22) are both slidably engaged with the first sliding shaft (61); Second sliding shaft (62); along the first direction (X), both ends of the second sliding shaft (62) are connected to the base (15); the first mirror assembly (21) and the second mirror assembly (22) are both slidably engaged with the second sliding shaft (62).

7. The camera module (10) according to claim 6, characterized in that, Both the first sliding shaft (61) and the second sliding shaft (62) are metal shafts; The camera module (10) also includes: A first magnetic element (611) is disposed on the first mirror assembly (21); the first magnetic element (611) is used to attract the first sliding shaft (61); A second magnetic element (612) is disposed on the first mirror assembly (21); the second magnetic element (612) is used to attract the second sliding shaft (62).

8. The camera module (10) according to claim 6 or 7, characterized in that, The first mirror assembly (21) has a first strip groove (211); the first strip groove (211) extends along the first direction (X), and the first strip groove (211) is slidably engaged with the first sliding shaft (61); the first strip groove (211) is a V-shaped groove; The first mirror assembly (21) has a second groove (212); the second groove (212) extends along the first direction (X), and the second groove (212) slides in cooperation with the second sliding shaft (62); the second groove (212) is a U-shaped groove or an L-shaped groove.

9. The camera module (10) according to claim 8, characterized in that, The second mirror assembly (22) has a fifth groove (213); the fifth groove (213) extends along the first direction (X), and the fifth groove (213) is slidably engaged with the first sliding shaft (61); the shape of the fifth groove (213) is the same as the shape of the first groove (211); The second mirror assembly (22) has a sixth groove (214); the sixth groove (214) extends along the first direction (X), and the sixth groove (214) slides in cooperation with the second sliding shaft (62); the shape of the sixth groove (214) is the same as the shape of the second groove (212).

10. The camera module (10) according to any one of claims 1-9, characterized in that, The camera module (10) also includes: The first optical path deflector (23) and the first mirror group assembly (21) are located on the light-emitting side of the first optical path deflector (23); The third mirror assembly (25) is located on the light-incident side of the first optical path deflector (23). The third mirror assembly (25) is slidably connected to the base (15) along the first direction (X). The optical axis of the third mirror assembly (25) is perpendicular to the first direction (X). A drive device (34), a portion of which is connected to the base and another portion of which is connected to the third mirror assembly (25), the drive device (34) being used to drive the third mirror assembly (25) to slide along the first direction (X).

11. The camera module (10) according to claim 10, characterized in that, The base (15) has a receiving cavity (101); The receiving cavity (101) has a first sidewall (M1) and a second sidewall (M2) that are oppositely disposed and parallel to the first direction (X); The driving device (34) is a third piezoelectric actuator, which is located on the side of the second sidewall (M2) away from the first sidewall (M1).

12. The camera module (10) according to claim 10, characterized in that, The driving device (34) is a voice coil motor, which includes a coil (332) and a magnet (331); The coil (332) is connected to the base (15), and the magnet (331) is connected to the third mirror assembly (25); or, the coil (332) is connected to the third mirror assembly (25), and the magnet (331) is connected to the base (15).

13. The camera module (10) according to any one of claims 1-9, characterized in that, The camera module (10) also includes: The first optical path deflector (23) and the first mirror group assembly (21) are located on the light-emitting side of the first optical path deflector (23); The third mirror assembly (25) is located on the light-incident side of the first optical path deflector (23). The third mirror assembly (25) is slidably connected to the base (15) along the first direction (X). The optical axis of the third mirror assembly (25) is perpendicular to the first direction (X). The third mirror assembly (25) is connected to the first piezoelectric actuator (31) or the second piezoelectric actuator (32), and the first piezoelectric actuator (31) or the second piezoelectric actuator (32) is also used to drive the third mirror assembly (25) to slide along the first direction (X).

14. The camera module (10) according to any one of claims 10-13, characterized in that, The base (15) has a receiving cavity (101); the camera module (10) also includes: First sliding shaft (61); along the first direction (X), both ends of the first sliding shaft (61) are connected to the base (15); the first mirror assembly (21) and the second mirror assembly (22) are both slidably engaged with the first sliding shaft (61); Second sliding shaft (62); along the first direction (X), both ends of the second sliding shaft (62) are connected to the base (15); the first mirror assembly (21) and the second mirror assembly (22) are both slidably engaged with the second sliding shaft (62); Third sliding shaft (63); along the first direction (X), both ends of the third sliding shaft (63) are connected to the base (15); the third sliding shaft (63) is located on the side of the first sliding shaft (61) away from the receiving cavity (101), and the third mirror group assembly (25) slides in cooperation with the third sliding shaft (63); Fourth sliding shaft (64); along the first direction (X), the two ends of the fourth sliding shaft (64) are connected to the base (15); the fourth sliding shaft (64) is located on the side of the second sliding shaft (62) away from the receiving cavity (101), and the third mirror group assembly (25) slides in cooperation with the fourth sliding shaft (64).

15. The camera module (10) according to any one of claims 10-13, characterized in that, The camera module (10) also includes: First sliding shaft (61); along the first direction (X), both ends of the first sliding shaft (61) are connected to the base (15); the first mirror assembly (21), the second mirror assembly (22) and the third mirror assembly (25) are all slidably engaged with the first sliding shaft (61); Second sliding shaft (62); along the first direction (X), both ends of the second sliding shaft (62) are connected to the base (15); the first mirror assembly (21), the second mirror assembly (22) and the third mirror assembly (25) are all slidably engaged with the second sliding shaft (62).

16. The camera module (10) according to any one of claims 2-15, characterized in that, The first piezoelectric actuator (31) further includes: A third magnetic component (43) is located between the first movable part (312a) and the first mirror assembly (21), and the third magnetic component (43) is connected to the first movable part (312a). A fourth magnetic element (44) is located between the first movable part (312a) and the first mirror assembly (21), and the fourth magnetic element (44) is connected to the first mirror assembly (21); the third magnetic element (43) and the fourth magnetic element (44) are arranged sequentially along the first direction (X), and the third magnetic element (43) and the fourth magnetic element (44) are magnetically attracted to each other; The first active part (312a) is indirectly connected to the first mirror assembly (21) through the third magnetic element (43) and the fourth magnetic element (44).

17. The camera module (10) according to any one of claims 2-16, characterized in that, The camera module (10) also includes: A fifth magnetic component (201) is connected to the first mirror assembly (21), and the fifth magnetic component (201) is used to generate a magnetic field; A sixth magnetic element (203) is connected to the second mirror assembly (22), and the sixth magnetic element (203) is used to generate a magnetic field; At least three first displacement detectors (202) are connected to the base (15); along the first direction (X), the at least three first displacement detectors (202) are spaced apart within the travel range of the first mirror group assembly (21) and the second mirror group assembly (22), and the at least three first displacement detectors (202) are used to jointly detect the magnetic field of the fifth magnetic element (201) and the sixth magnetic element (203).

18. The camera module (10) according to any one of claims 10-16, characterized in that, The camera module (10) also includes: A seventh magnetic component (301) is connected to the third mirror assembly (25), and the seventh magnetic component (301) is used to generate a magnetic field; Two second displacement detectors (302) are connected to the base (15). The two second displacement detectors (302) are spaced apart at both ends of the travel range of the third mirror group assembly (25). The two second displacement detectors (302) are used to detect the magnetic field of the seventh magnetic component (301).

19. An electronic device (01), characterized in that, include: The housing (07) and the camera module (10) as described in any one of claims 1-18, wherein the camera module (10) is disposed within the housing (07).

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