Drive components and zoom camera modules

Abstract

Disclosed are a drive assembly and a zoom camera module, wherein a pre-stress device in the drive assembly for providing pre-stress so that a first drive element contacts a first carrier has an extended structure, which is arranged across two opposite sides of a drive housing and the pre-stress device occupies a relatively small size in height space. Through such a structural configuration, the pre-stress device can provide pre-stress while avoiding occupying height space, so that the drive assembly and the zoom camera module have a more compact structural arrangement.

Description

Technical Field

[0001] The present application relates to the field of camera modules, and in particular to a drive assembly and a zoom camera module. Background Art

[0002] With the popularization of mobile electronic devices, the technology related to camera modules used in mobile electronic devices to help users capture images has experienced rapid development and progress. Currently, in the market, with the improvement of living standards, consumers have increasingly higher and more diverse functional requirements for camera modules configured in mobile electronic devices (such as smartphones). They not only require that the camera modules configured in terminal devices can achieve optical image stabilization to reduce the impact of shaking on image quality during the shooting process, but also require that they can achieve zoom shooting function to capture clear images of subjects at different distances through optical zoom.

[0003] To achieve zoom photography, one current solution is to incorporate a zoom lens into a camera module to create an optical zoom camera module. This module achieves zoom by varying the distance between the lens elements, thereby changing the focal length of the zoom lens. This allows for relatively clear images of subjects at varying distances.

[0004] In an optical variable camera module, a zoom lens usually includes multiple lens parts. For example, it usually includes three lens parts: a fixed part, a zoom part, and a focus part. The optical variable camera module is equipped with a driving element for the zoom part and the focus part respectively. During the zooming process, the current practice is to first move the zoom part to a preset position by a driving element; then, move the focus part by another driving element to focus, so that the image of the optical variable camera module is clear, and in this way, the optical zoom process is completed. However, as consumers have higher and higher requirements for zoom accuracy, zoom speed and the size of optical variable camera modules, the existing structural design schemes and optical variable driving schemes of optical variable camera modules have gradually become difficult to meet the requirements.

[0005] Specifically, in current optical zoom camera modules, the zoom and focus components are driven separately in batches to achieve optical zoom. This means the zoom component moves first, followed by the focus component. It's important to note that during zooming, because the desired position of the zoom component isn't known, it must be moved nearly its full range of motion to a preset position. This results in a relatively slow zoom rate, impacting the user's shooting experience.

[0006] Secondly, to achieve a clear image, the focus unit, when driven by the second drive element, needs to be controlled to move through the entire defocus range. In other words, the focus lens needs to move from the farthest point to the closest point to determine the position where the image is clear. This approach is inefficient and also produces image blur when focusing at infinity, affecting the user's shooting experience.

[0007] Therefore, an optimized zoom module design is expected. Summary of the Invention

[0008] One advantage of the present application is that it provides a driving component and a zoom camera module, wherein the zoom camera module adopts a "parent-child" driving scheme to provide driving support for the zoom drive, wherein the "parent-child" driving scheme can drive the zoom camera module to achieve adjustment of optical performance such as optical zoom and / or optical focus at a relatively faster speed.

[0009] Another advantage of the present application is that it provides a driving assembly and a zoom camera module, wherein the "parent-child" driving scheme includes two driving elements, and through a special structural configuration, one of the driving elements can drive two lens parts to move together, while the other driving element can only drive one lens part to move. In this way, the zoom camera module can achieve adjustment of optical performance such as optical zoom and / or optical focus at a relatively faster speed.

[0010] Another advantage of the present application is that it provides a variable-focus camera module, wherein the pre-pressure device in the drive assembly for providing pre-pressure so that the first drive element contacts the first carrier has an extended structure, which is arranged on two opposite sides of the drive housing and the pre-pressure device occupies a relatively small size in the height space. Through such a structural configuration, the pre-pressure device can provide pre-pressure while avoiding occupying the height space, so that the drive assembly and the variable-focus camera module have a more compact structural arrangement.

[0011] Other advantages and features of the present application will become apparent from the following description, and may be achieved by means of the instruments and combinations particularly pointed out in the claims.

[0012] To achieve at least one of the above advantages, the present application provides a drive assembly, comprising:

[0013] Drive housing;

[0014] a first carrier movably mounted in the drive housing, the first carrier having a first mounting cavity adapted to mount a first lens portion therein, the first lens portion being provided with an optical axis;

[0015] a first driving element for driving the first carrier to move in the driving housing along a direction set by the optical axis;

[0016] A pre-pressure device is arranged between the first driving element and the driving housing, and is suitable for providing a pre-pressure that causes the first driving element to contact the first carrier, wherein a first end of the pre-pressure device is fixed to one side of the driving housing, and a second end of the pre-pressure device opposite to the first end is fixed to the other side of the driving housing opposite to the first end.

[0017] In the drive assembly according to the present application, the pre-pressure device extends between opposite sides of the drive housing along a direction set by the optical axis.

[0018] In the drive assembly according to the present application, the pre-pressure device extends between opposite sides of the drive housing along a set width direction of the drive housing.

[0019] In the drive assembly according to the present application, the pre-pressure device includes a first fixing portion and a second fixing portion respectively fixed between opposite sides of the drive housing, a first deformation portion extending from the first fixing portion and a second deformation portion extending from the second fixing portion, and a main body portion extending between the first deformation portion and the second deformation portion, wherein the end of the first fixing portion forms the first end, the end of the second fixing portion forms the second end, and the main body portion presses on the first drive element so that the pre-pressure applied to the first drive element by the main body portion causes the first drive element to contact the first carrier.

[0020] In the drive assembly according to the present application, the first fixing portion, the second fixing portion and the main body portion are located at the same height plane.

[0021] In the drive assembly according to the present application, the first fixing portion and the second fixing portion are located at the same height plane, and the main body portion is lower than the height plane where the first fixing portion and the second fixing portion are located.

[0022] In the drive assembly according to the present application, the extending directions of the first fixing portion, the second fixing portion, and the main body portion are consistent with the extending direction of the first drive element.

[0023] In the drive assembly according to the present application, the first drive element is a piezoelectric actuator, which is arranged between the top surface of the first carrier and the drive housing. The piezoelectric actuator includes a piezoelectric active part and a friction drive part movably connected to the piezoelectric active part. The friction drive part contacts the top surface of the first carrier through the pre-pressure provided by the pre-pressure device.

[0024] In the drive assembly according to the present application, the drive assembly further includes a first guiding device for guiding the first carrier to move in the drive housing along the direction set by the optical axis, wherein the direction of the pre-pressure provided by the pre-pressure device acting on the first drive element is perpendicular to the guiding direction of the first guiding device.

[0025] In the drive assembly according to the present application, the first guide device includes a first guide element and a second guide element arranged on opposite sides of the first carrier, the first guide element and the pre-pressure device are located on the same side of the first carrier, and the second guide element and the pre-pressure device are located on different sides of the first carrier.

[0026] In the drive assembly according to the present application, the direction of the pre-pressure provided by the pre-pressure device and acting on the first drive element is perpendicular to the extension direction of the first guide element.

[0027] In the driving assembly according to the present application, the first guiding element is a first guiding rod extending along a direction set by the optical axis.

[0028] In the driving assembly according to the present application, the driving assembly further includes a second carrier movably mounted on the first carrier, the second carrier being suitable for mounting a second lens part therein, and a second driving element for driving the second carrier to move relative to the first carrier.

[0029] In the driving component according to the present application, the driving component further includes a second guiding device arranged between the first carrier and the second carrier and used to guide the second carrier to move relative to the first carrier along the direction set by the optical axis, wherein the direction of the prepressure provided by the prepressure device acting on the first driving element is perpendicular to the guiding direction of the second guiding device.

[0030] According to another aspect of the present application, a zoom camera module is provided, comprising:

[0031] A drive assembly as described above;

[0032] a third lens portion fixedly mounted on the light incident side of the drive housing;

[0033] a first lens portion mounted within a first carrier of the drive assembly;

[0034] a second lens portion mounted within a second carrier of the drive assembly; and

[0035] A photosensitive component is arranged on the light-emitting side of the drive housing.

[0036] In the zoom camera module according to the present application, the zoom camera module further includes: a light deflecting element for deflecting imaging light, wherein the third lens part, the second lens part and the first lens part are maintained on the light deflecting path of the light deflecting element.

[0037] Further objectives and advantages of the present application will be fully reflected through understanding of the following description and drawings.

[0038] These and other objects, features and advantages of the present application are fully reflected in the following detailed description, drawings and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The above and other purposes, features, and advantages of the present application will become more apparent through a more detailed description of the embodiments of the present application in conjunction with the accompanying drawings. The accompanying drawings are intended to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the drawings, the same reference numerals generally represent the same components or steps.

[0040] Figure 1 3D schematic diagram of a zoom camera module according to an embodiment of the present application.

[0041] Figure 2 It is a stereoscopic exploded schematic diagram of the zoom camera module according to an embodiment of the present application.

[0042] Figure 3 2. It is another stereoscopic exploded schematic diagram of the variable-focus camera module according to an embodiment of the present application.

[0043] Figure 4 3D schematic diagram of a driving carrier in the zoom camera module according to an embodiment of the present application.

[0044] Figure 5 It is a three-dimensional exploded schematic diagram of the driving carrier according to an embodiment of the present application.

[0045] Figure 6 2 is a plan view of the zoom camera module according to an embodiment of the present application.

[0046] 7A to 7D This is a schematic diagram of the first driving element driving the first carrier in the zoom camera module according to an embodiment of the present application.

[0047] Figure 8 This is another stereoscopic exploded schematic diagram of the zoom camera module according to an embodiment of the present application.

[0048] Figure 9 Schematic top view of the zoom camera module according to an embodiment of the present application.

[0049] Figure 10 2 is another stereoscopic schematic diagram of the zoom camera module according to an embodiment of the present application.

[0050] Figure 11 2 is another stereoscopic schematic diagram of the zoom camera module according to an embodiment of the present application.

[0051] Figure 12 2 is another planar schematic diagram of the variable-focus camera module according to an embodiment of the present application.

[0052] Figure 13 2 is another stereoscopic schematic diagram of the zoom camera module according to an embodiment of the present application.

[0053] Figure 14 This is another planar schematic diagram of the zoom camera module according to an embodiment of the present application.

[0054] Figure 15 This is another planar schematic diagram of the zoom camera module according to an embodiment of the present application.

[0055] Figure 16 This is another stereoscopic exploded schematic diagram of the zoom camera module according to an embodiment of the present application.

[0056] Figure 17 Another 3D exploded diagram of the zoom camera module according to an embodiment of the present application

[0057] Figure 18 This is another planar schematic diagram of the zoom camera module according to an embodiment of the present application.

[0058] Figure 19 This is another planar schematic diagram of the zoom camera module according to an embodiment of the present application.

[0059] Figure 20 This is another planar schematic diagram of the zoom camera module according to an embodiment of the present application.

[0060] Figure 21 2 is another stereoscopic schematic diagram of the zoom camera module according to an embodiment of the present application.

[0061] Figure 22 This is another stereoscopic exploded schematic diagram of the zoom camera module according to an embodiment of the present application. DETAILED DESCRIPTION

[0062] Below, the exemplary embodiments according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application, and it should be understood that the present application is not limited to the exemplary embodiments described herein.

[0063] Exemplary zoom camera module

[0064] like Figures 1 to 22 As shown, a zoom camera module according to an embodiment of the present application is illustrated, wherein the zoom camera module is implemented as a zoom periscope camera module, which includes: a light deflection element 10, a zoom lens 20, a photosensitive component 30, and a driving component 40. It should be understood that in other embodiments of the present application, the zoom camera module can also be implemented as other types of camera modules, for example, a conventional upright zoom camera module, and this is not limited to this application.

[0065] like Figure 1 As shown, in this embodiment of the present application, the light deflecting element 10 is used to receive imaging light from the subject and deflect the imaging light to the zoom lens 20. Specifically, in this embodiment of the present application, the light deflecting element 10 is configured to deflect the imaging light from the subject by 90°, thereby reducing the overall height of the zoom camera module. Considering manufacturing tolerances, in actual operation, the angle at which the light deflecting element 10 deflects the imaging light may have an error of less than 1°, which will be understood by those skilled in the art.

[0066] In a specific example of the present application, the light deflecting element 10 can be implemented as a reflector (e.g., a plane reflector) or a light deflecting prism (e.g., a triangular prism). For example, when the light deflecting element 10 is implemented as a light deflecting prism, the light incident surface of the light deflecting prism and its light exit surface are perpendicular to each other, and the light reflecting surface of the light deflecting prism is inclined at a 45° angle to the light incident surface and the light exit surface. In this way, when the imaging light can be deflected 90° at the light reflecting surface, it can be output from the light exit surface in a manner perpendicular to the light exit surface.

[0067] Of course, in other examples of the present application, the light deflecting element 10 can also be implemented as other types of optical elements, which is not limited by the present application. Moreover, in an embodiment of the present application, the variable focus camera module can also include a larger number of light deflecting elements 10. One reason for this is that one of the functions of introducing the light deflecting element 10 is to deflect the imaging light so that the optical system of the variable focus camera module with a longer total optical length (TTL: Total Track Length) can be folded in the structural dimension. Accordingly, when the total optical length (TTL) of the variable focus camera module is too long, a larger number of light deflecting elements 10 can be provided to meet the size requirements of the variable focus camera module. For example, the light deflecting element 10 can be provided on the image side of the variable focus camera module or between two optical lenses therein.

[0068] It is worth mentioning that in some examples of the present application, the light deflection element 10 can also be configured with a light deflection driving element (not shown in the figure), which is used to drive the light deflection element 10 to perform yaw and / or pitch movement, thereby realizing the optical image stabilization function of the variable-focus periscope camera module.

[0069] like Figure 1 As shown, in the embodiment of the present application, the zoom lens 20 is retained in the light deflection path of the light deflecting element 10, and is configured to receive imaging light from the light deflecting element 10 and converge the imaging light. Accordingly, the zoom lens 20 includes a third lens portion 21, a first lens portion 23, and a second lens portion 22 coaxially arranged along the optical axis set by the zoom lens 20 (i.e., from the light input side to the light output side of the zoom camera module, the third lens portion 21, the first lens portion 23, and the second lens portion 22 are sequentially included). The second lens portion 22 and the first lens portion 23 can be adjusted relative to the third lens portion 21 under the action of the drive assembly 40, thereby adjusting the optical performance of the zoom camera module, including but not limited to optical focus and optical zoom functions. Specifically, the second lens portion 22 and the first lens portion 23 can be adjusted by the drive assembly 40 to adjust the focal length of the zoom lens 20 of the zoom camera module, thereby enabling clear capture of subjects at different distances.

[0070] The third lens section 21 includes a third lens barrel and at least one optical lens housed within the third lens barrel. In a specific example of the present application, the third lens section 21 is implemented as a fixed lens section, wherein the fixed lens section is adapted to be fixed to a non-moving portion of the drive assembly 40 so that the fixed lens section maintains a constant position within the zoom lens 20.

[0071] It is worth mentioning that in other examples of the present application, the third lens portion 21 may not be provided with the third lens barrel, and may only include at least one optical lens, for example, it may only include multiple optical lenses interlocked with each other. In other examples of the present application, the third lens portion 21 may be implemented as a "bare lens."

[0072] The first lens section 23 includes a first lens barrel and at least one optical lens housed within the first lens barrel. In a specific example of the present application, the first lens section 23 is implemented as a zoom lens section, wherein the zoom lens section is adapted to be driven by the drive assembly 40 to move along the optical axis direction set by the zoom lens 20, thereby realizing the optical zoom function of the zoom camera module, so that the zoom camera module can achieve clear photography of subjects at different distances.

[0073] In an embodiment of the present application, the second lens portion 22 includes a second lens barrel and at least one optical lens housed within the second lens barrel. In a specific example of the present application, the second lens portion 22 is implemented as a focus lens portion, wherein the focus lens portion is adapted to be driven by the drive assembly 40 to move along the optical axis direction set by the zoom lens 20, thereby achieving the focusing function of the zoom camera module. More specifically, the optical focus achieved by driving the focus lens portion can compensate for the focus shift caused by moving the zoom lens portion, thereby compensating for the imaging performance of the zoom camera module, so that its imaging quality meets preset requirements.

[0074] It is worth mentioning that in other examples of the present application, the second lens portion 22 may not be provided with the second lens barrel, and may only include at least one optical lens, for example, it may only include multiple optical lenses interlocked with each other. In other examples of the present application, the second lens portion 22 may also be implemented as a "bare lens."

[0075] It is worth mentioning that in other examples of the present application, the first lens portion 23 may not be provided with the first lens barrel, and may only include at least one optical lens, for example, it may only include multiple optical lenses embedded in each other. In other examples of the present application, the first lens portion 23 may also be implemented as a "bare lens."

[0076] More specifically, if Figure 1As shown, in the embodiment of the present application, the third lens section 21, the first lens section 23, and the second lens section 22 are sequentially arranged from the light entrance side to the light exit side of the variable-focus periscope camera module, wherein the light entrance side is adjacent to the light deflecting element 10, and the light exit side is adjacent to the photosensitive component 30. In a specific example of the present application, the second lens section 22, the first lens section 23, and the third lens section 21 are respectively implemented as a focus lens section, a zoom lens section, and a fixed lens section. That is, in the zoom lens 20, the zoom lens section is located between the fixed lens section and the focus lens section. That is, when the imaging light from the light deflecting element 10 passes through the zoom lens 20, it will sequentially pass through the fixed lens section, then the zoom lens section, and then the focus lens section.

[0077] In other examples of the present application, the relative positional relationship between the fixed lens part, the zoom lens part and the focus lens part can also be adjusted. For example, in a specific embodiment, the focus lens part is arranged between the fixed lens part and the zoom lens part. Accordingly, the third lens part 21, the first lens part 23 and the second lens part 22 can still be implemented as the fixed lens part, the focus lens part and the zoom lens part respectively. In another specific embodiment of the present application, the fixed lens part is arranged between the zoom part and the focus part. It should be understood that in the embodiment of the present application, the relative positional relationship between the fixed lens part, the zoom lens part and the focus lens part can be adjusted according to the optical design requirements and structural design requirements of the zoom camera module.

[0078] Taking into account the structural design of the zoom camera module, preferably, the focus lens portion and the zoom lens portion are arranged adjacent to each other. That is, according to the position of each part of the zoom lens 20 implemented in this application, it is preferably configured as follows: the zoom lens portion is located between the fixed lens portion and the focus lens portion, or the focus lens portion is located between the fixed lens portion and the zoom lens portion. It should be understood that the zoom lens portion and the focus lens portion are the parts of the zoom lens 20 that need to be moved. Therefore, the focus lens portion and the zoom lens portion are arranged adjacent to each other. Such a position setting is conducive to the arrangement of the drive assembly 40, which will be expanded in the specific description of the drive assembly 40.

[0079] It is also worth mentioning that in Figure 1In the illustrated example, although the zoom lens 20 is taken as an example including a second lens part 22, a first lens part 23 and a third lens part 21, a person skilled in the art should know that in other examples of the present application, the specific number selection of the second lens part 22, the first lens part 23 and the third lens part 21 is not limited to the present application, and it can be adjusted according to the optical design requirements of the zoom camera module.

[0080] like Figure 1 As shown, in the embodiment of the present application, the photosensitive component 30 corresponds to the zoom lens 20 and is used to receive imaging light from the zoom lens 20 and perform imaging, wherein the photosensitive component 30 includes a circuit board, a photosensitive chip electrically connected to the circuit board, and a filter element held in the light sensing path of the photosensitive chip. In a specific example, the photosensitive component 30 further includes a lens holder provided on the circuit board, wherein the filter element is mounted on the lens holder to be held in the light sensing path of the photosensitive chip.

[0081] Accordingly, in an embodiment of the present application, the photosensitive chip is used to receive the external light imaging captured by the zoom lens 20 and electrically connect to the mobile electronic device (e.g., a smart phone) through the circuit board, wherein the photosensitive chip includes a photosensitive area and a non-photosensitive area, and the photosensitive chip is electrically connected to the circuit board via a pad located in the non-photosensitive area. For example, the photosensitive chip is electrically connected to the circuit board by wire bonding (gold wire), welding, FC process (chip flip-chip) or RDL (rewiring layer technology). In some examples of the present application, the photosensitive chip is attached to the upper surface of the circuit board by an adhesive (here, the surface of the circuit board facing the zoom lens 20 is defined as the upper surface, and the surface of the circuit board opposite to the upper surface is defined as the lower surface of the circuit board).

[0082] It is worth mentioning that in some examples of the present application, in order to reduce the overall height of the photosensitive component 30, a groove or a through hole is opened in the middle area of ​​the circuit board, and the photosensitive chip is installed in the groove or the through hole to reduce the overall height of the photosensitive component 30.

[0083] In an embodiment of the present application, the circuit board includes a circuit board body, a connecting strip extending from the circuit board body, a connector part arranged at the end of the connecting strip, and a connector connected to the connector part (the connecting strip, the connector part and the connector are not shown in the figure), wherein the connecting strip connects the circuit board body and the connector part to achieve electrical conduction between the circuit board body and the connecting part, and the circuit board body can be a PCB hard board, a PCB soft board, a soft-hard combination board, a ceramic substrate, etc.

[0084] In the embodiment of the present application, the filter element is retained in the light-sensing path of the photosensitive chip to filter the imaging light entering the photosensitive chip. In a specific example, the filter element is mounted on the lens holder of the photosensitive assembly 30 and corresponds to at least the light-sensing area of ​​the photosensitive chip. In this specific example, the lens holder is implemented as a separately molded plastic bracket, which is attached to the upper surface of the circuit board via an adhesive medium and is used to support other components.

[0085] It is worth mentioning that in other examples of the present application, the mirror base can be implemented as other types of mirror bases. For example, the mirror base can be implemented as a molded mirror base, which is integrally formed at a preset position on the upper surface of the circuit board through a molding process. Of course, injection molding or other processes can also be used to make the mirror base integrally formed on the circuit board. For another example, the mirror base can be a combination of a plastic bracket and a molded base, wherein the molded base can be integrally formed on the non-photosensitive area of ​​the photosensitive chip, and the plastic bracket is superimposed on the molded base. It is worth mentioning that when a molded mirror base is used, the molded mirror base or the molded base can cover the electronic components arranged on the circuit board to isolate and protect the electronic components.

[0086] Moreover, the specific implementation manner in which the filter element is retained on the photosensitive path of the photosensitive chip is not limited to the present application. For example, the filter element may be implemented as a filter film and coated on the surface of an optical lens of the zoom lens 20 to achieve a filtering effect. For another example, the photosensitive component 30 may further include a filter element holder mounted on the holder (not shown in the figure), wherein the filter element is retained on the photosensitive path of the photosensitive chip by being mounted on the filter element holder.

[0087] As previously mentioned, to achieve optical zoom, the current approach is to first use a drive element to move the zoom portion to a preset position; then, another drive element moves the focus portion to focus, ensuring a clear image from the optical zoom camera module. This completes the optical zoom process. However, as consumers demand ever-higher zoom accuracy, zoom speed, and the size of optical zoom camera modules, this optical zoom drive solution is increasingly unable to meet these requirements.

[0088] Accordingly, in an embodiment of the present application, the zoom camera module adopts a "parent-child" driving scheme to provide driving support for the zoom drive, wherein the "parent-child" driving scheme can drive the zoom camera module to achieve adjustment of optical performance such as optical zoom and / or optical focus at a relatively faster speed.

[0089] Specifically, if Figures 2 to 22 As shown, the drive assembly 40 includes: a drive housing 41, a first drive part and a second drive part located in the drive housing 41, wherein the first drive part is movably arranged in the drive housing 41, and the second drive part is movably arranged in the first drive part. In the embodiment of the present application, the third lens part 21 is fixedly mounted on the drive housing 41, the first lens part 23 is suitable for being mounted on the first drive part, and the second lens part 22 is suitable for being mounted on the second drive part. In this way, when the first drive part moves relative to the drive housing 41, the second drive part can move with the first drive part relative to the drive housing 41. That is, when the first drive part is driven in the drive housing 41, the first lens part 23 mounted on the first drive part and the second lens part 22 mounted on the second drive part can be moved simultaneously.

[0090] In addition, the second driving part movably mounted on the first driving part can move relative to the first driving part after being driven, so that the second lens part 22 can move independently relative to the first lens part 23, so as to adjust the effective focal length of the zoom lens 20 of the camera module by adjusting the relative distance between the first lens part 23 and the second lens part 22.

[0091] In an embodiment of the present application, the first driving part is configured to simultaneously drive the first lens part 23 and the second lens part 22 to move along the direction set by the optical axis after being turned on, and the second driving part is configured to separately drive the second lens part 22 to move along the direction set by the optical axis after being turned on. For the sake of convenience, this optical variable driving scheme is defined as a "parent-child type", wherein the parent drive is the first driving part and the child drive is the second driving part.

[0092] like Figure 2 As shown, in the embodiment of the present application, the driving housing 41 includes an upper cover 411 and a base 412, wherein the upper cover 411 and the base 412 can be interlocked to form a receiving cavity therebetween, and the receiving cavity is used to receive the first driving part, the second driving part, the zoom lens 20 and other components therein. In this way, not only can the various components in the driving assembly 40 be protected from damage due to collision, but also dust, dirt or stray light can be prevented from entering the interior of the driving assembly 40.

[0093] Specifically, in the embodiment of the present application, the upper cover 411 is engaged with the upper part of the base 412. In the embodiment of the present application, the base 412 has a first side and a second side opposite to each other and a third side and a fourth side perpendicular to the first side and the second side, wherein the third side is the light incident side of the driving assembly 40, and the fourth side is the light emitting side of the driving assembly 40. The base 412 includes a first side wall and a second side wall respectively formed on the first side and the second side and extending upward from the bottom of the base 412 along the height direction set by the driving assembly 40, and a third side wall and a fourth side wall respectively formed on the third side and the fourth side of the base 412 and extending upward from the bottom of the base 412 along the height direction set by the driving assembly 40. Here, the height direction refers to the direction perpendicular to the plane where the optical axis is located.

[0094] In particular, in the embodiment of the present application, the third side arm and the fourth side arm form an opening corresponding to the photosensitive component 30, so that light reflected by an object can reach the photosensitive component 30. Corresponding to the drive housing 41, the drive component 40 also has a first side, a second side, a third side, and a fourth side.

[0095] Specifically, in the embodiment of the present application, the third lens portion 21 is arranged on the third side arm of the base 412. More specifically, the third lens portion 21 is installed at the opening of the third side arm. In other words, the third lens portion 21 is fixed to the drive housing 41 of the non-moving part in the drive assembly 40. That is to say, in the zoom lens 20, the position of the third lens portion 21 remains constant as a fixed lens portion.

[0096] More specifically, in this embodiment of the present application, the photosensitive assembly 30 is disposed on the fourth side arm of the base 412. More specifically, the photosensitive assembly 30 is positioned at the opening of the fourth side arm to receive imaging light from the zoom lens 20. That is, in this embodiment of the present application, the imaging light enters from the third side of the driving assembly 40, exits from the fourth side of the driving assembly 40, and reaches the photosensitive assembly 30.

[0097] In the embodiments of this application, Figure 2 As shown, the base 412 is provided with a notch at its bottom, and the notch extends from the bottom surface of the bottom of the base 412 to the top surface of the bottom of the base 412, that is, the notch is a through hole. Furthermore, the drive housing 41 also includes a shielding piece 413, and the shielding piece 413 is used to close the opening, so that the shielding piece 413 can not only block external stray light from entering the interior of the drive assembly 40, but also prevent dust, dirt or stray light from entering the interior of the drive assembly 40, and can also increase the strength of the bottom of the base 412. It is worth mentioning that since the bottom of the base 412 needs to be as thin as possible to reduce the height of the camera module, and the bottom of the base 412 is too thin, it is not only difficult to form during the manufacturing process, but also reduces its reliability. Therefore, a notch is provided at the bottom of the base 412 to facilitate its manufacturing and forming, and the shielding piece 413 is provided at the notch of the base 412 to increase the reliability of the base 412. Of course, in other examples of the present application, the bottom of the base 412 may not be provided with a notch, that is, the bottom of the base 412 is a complete structure, and the present application does not impose any limitation on this.

[0098] like Figures 1 to 22As shown, in the embodiment of the present application, the driving assembly 40 further includes a driving carrier 400, a driving element 440, a pre-pressure device 49, a guide component and a conductive component 50 accommodated in the driving housing 41, wherein the driving element 440 is used to drive the first lens portion 23 and / or the second lens portion 22 of the zoom lens 20, so that the distance between the first lens portion 23 and the second lens portion 22 relative to the photosensitive component 30 is adjusted, thereby realizing the optical focus and / or optical zoom function of the camera module. In the embodiment of the present application, the first lens portion 23 and the second lens portion 22 of the zoom lens 20 are placed on the driving carrier 400, so that the driving element 440 drives the driving carrier 400 to move, thereby driving the first lens portion 23 and / or the second lens portion 22 of the zoom lens 20 to move, so as to realize the optical focus and / or optical zoom function of the camera module. The pre-pressure device 49 is disposed between the drive carrier 400 and the drive housing 41 and is used to provide a certain pre-pressure to the drive element 440, so that the drive element 440 can maintain frictional contact with the drive carrier 400 under the action of the pre-pressure. The guide component is used to guide and control the movement direction of the drive carrier 400 to achieve a guiding function. The conductive component 50 is used to conduct electricity from the drive element 440 to the photosensitive component 30, thereby providing the drive element 440 with the required operating power through the circuit board of the photosensitive component 30.

[0099] like Figures 2 to 5 As shown, specifically, in an embodiment of the present application, the driving carrier 400 includes a first carrier 42, a second carrier 43 and an anti-collision structure 430, wherein the first carrier 42 is movably disposed in the driving housing 41, the second carrier 43 is movably disposed in the first carrier 42, and the first lens part 23 is installed in the first carrier 42, and the second lens part 22 is installed in the second carrier 43.

[0100] Correspondingly, the first carrier 42 has a first mounting cavity 421 and a second mounting cavity 422, wherein the first lens portion 23 is mounted in the first mounting cavity 421, and the second carrier 43 with the second lens portion 22 is movably mounted in the second mounting cavity 422. The second carrier 43 has a third mounting cavity 431, and the second lens portion 22 is mounted in the third mounting cavity 431. Through this structural design, when the first carrier 42 is driven to move relative to the drive housing 41, the second carrier 43 can move with the first carrier 42 relative to the drive housing 41, thereby enabling the first carrier 42 and the second carrier 43 to simultaneously drive the first lens portion 23 and the second lens portion 22 to move.

[0101] Furthermore, because the second carrier 43 is movably mounted within the second mounting cavity 422 of the first carrier 42, the second lens portion 22 mounted on the second carrier 43 can move relative to the first lens portion 23 mounted on the first carrier 42, thereby adjusting the focal length of the camera module's zoom lens 20 by adjusting the relative distance between the first lens portion 23 and the second lens portion 22. Accordingly, to ensure that the second lens portion 22 has sufficient space to move relative to the first lens portion 23 to meet the travel requirements of the second lens portion 22, the difference in size between the second mounting cavity 422 and the second carrier 43 in the direction defined by the optical axis is greater than the travel requirements of the second lens portion 22. That is, in this embodiment of the present application, the difference in the length of the movable space of the second mounting cavity 422 in the direction defined by the optical axis and the size of the second carrier 43 is greater than the travel requirements of the second lens portion 22, thereby enabling the second carrier 43 and the second lens portion 22 to move throughout their full travel within the second mounting cavity 422.

[0102] Specifically, in the embodiment of the present application, the first carrier 42 includes a first carrier side arm 423 and a second carrier side arm 424, which are disposed opposite each other. The first carrier side arm 423 and the second carrier side arm 424 are disposed on opposite first and second sides of the drive assembly 40, respectively. Preferably, in the embodiment of the present application, the first drive element 44 can be disposed on the first carrier side arm 423 or the second carrier side arm 424 to avoid increasing the height of the drive assembly 40. The first carrier 42 also includes a first carrier connecting portion 425 at its bottom, extending between the first carrier side arm 423 and the second carrier side arm 424. The first carrier side arm 423, the second carrier side arm 424, and the first carrier connecting portion 425 form a first mounting cavity 421 and a second mounting cavity 422 of the first carrier 42.

[0103] Specifically, in this embodiment of the present application, the second carrier 43 includes opposing third and fourth carrier side arms 432 and 433, respectively disposed on opposing first and second sides of the drive assembly 40. Preferably, the second drive element 45 can be disposed on either the third or fourth carrier side arm 432 and 433 to avoid increasing the height of the drive assembly 40. Furthermore, the second carrier 43 further includes a second carrier connecting portion 434 at its bottom, extending between the third and fourth carrier side walls. The third, fourth, and second carrier side arms 432 and 433, together with the second carrier connecting portion 434, form a third mounting cavity 431 of the second carrier 43.

[0104] In particular, in the embodiment of the present application, the length of the third carrier side arm 432 is shorter than the length of the first carrier side arm 423, and the length of the fourth carrier side arm 433 is shorter than the length of the second carrier side arm 424, thereby providing a certain amount of movement space for the second carrier 43 within the second mounting cavity 422. Accordingly, the first carrier side arm 423 of the first carrier 42 includes a first front section 4231 and a first rear section 4232, and the second carrier side arm 424 of the first carrier 42 includes a second front section 4241 and a second rear section 4232, wherein the first front section 4231 and the second front section 4241 are close to the light incident side (i.e., the third side) of the first carrier 42, and the first rear section 4232 and the second rear section 4232 are close to the light emitting side (i.e., the fourth side) of the first carrier 42. Accordingly, in the embodiment of the present application, the height of the first front section 4231 is higher than the height of the first rear section 4232, and the height of the second front section 4241 is higher than the height of the second rear section 4232. Preferably, the height of the first rear section 4232 is the same as the height of the second rear section 4232.

[0105] In a specific example of the present application, the third carrier side arm 432 of the second carrier 43 is disposed on the first rear section 4232 of the first carrier side arm 423, and the fourth carrier side arm 433 of the second carrier 43 is disposed on the second rear section 4232 of the second carrier side arm 424. This arrangement ensures that after the second carrier 43 is placed on the first carrier 42, the top surface of the second carrier 43 does not exceed the top surface of the first carrier 42, thereby avoiding increasing the overall height of the drive assembly 40. Furthermore, this arrangement allows the second carrier 43 to maintain stable movement within the first carrier 42, preventing the generation of tilt.

[0106] Furthermore, in the embodiment of the present application, anti-collision structures 430 are provided on both the light-entering side and the light-emitting side of the drive assembly 40. For example, in a specific example, the anti-collision structures 430 are provided on the end surfaces of the light-exiting side and the light-entering side of the first carrier side arm 423 and the second carrier side arm 424 of the first carrier 42 to prevent the first carrier 42 from colliding with the drive housing 41 during movement, thereby avoiding affecting the first lens portion 23; at the same time, the anti-collision structures 430 are provided on the end surfaces of the light-entering side and the light-emitting side of the third carrier side arm 432 and the fourth carrier side arm 433 of the second carrier 43 to prevent the second carrier 43 from colliding with the first carrier 42 during movement, thereby avoiding affecting the second lens portion 22.

[0107] In the embodiment of the present application, preferably, the anti-collision structure 430 is made of a material having an elastic modulus smaller than that of the first carrier 42 and the second carrier 43, such as silicone, wherein the anti-collision structure 430 can be fixed to the preset positions of the first carrier 42 and the second carrier 43 by bonding. Of course, in other specific examples of the present application, the anti-collision structure 430 can be integrally formed at the preset positions of the first carrier 42 and the second carrier 43 by secondary injection molding. It is also worth mentioning that in the embodiment of the present application, the number of the anti-collision structures 430 is two or more, and, preferably, the anti-collision structures 430 are symmetrically arranged on the light-emitting side and the light-emitting side of the first carrier 42 or the second carrier 43 to avoid the first carrier 42 or the second carrier 43 from tilting due to the configuration of the anti-collision structure 430.

[0108] like Figure 6 As shown, in the embodiment of the present application, the driving element 440 includes two driving elements 440, which are defined as a first driving element 44 and a second driving element 45 for the sake of convenience, wherein the first driving element 44 is configured to drive the first carrier 42 and the second carrier 43 to move along the direction set by the optical axis after being turned on, so as to simultaneously drive the first lens part 23 and the second lens part 22 to move along the direction set by the optical axis; the second driving element 45 is configured to drive the second carrier 43 alone to move along the direction set by the optical axis after being turned on, so as to drive the second lens part 22 to move along the direction set by the optical axis.

[0109] Accordingly, in the embodiment of the present application, the first driving element 44 and the first carrier 42 form the first driving part, and the second driving element 45 and the second carrier 43 form the second driving part. It should be understood that in the embodiment of the present application, the first driving part includes other components in addition to the first driving element 44 and the first carrier 42. Since the other components are not closely related to the driving of the first driving part, the other components are not included in the first driving part here; similarly, the second driving part may also include other components in addition to the second driving element 45 and the second carrier 43. Since the other components are not closely related to the driving of the second driving part, the other components are not included in the second driving part here.

[0110] In a specific example of the present application, the first driving element 44 and the second driving element 45 are arranged on the same side of the driving assembly 40, for example, the first side or the second side of the driving assembly 40, that is, the first driving element 44 and the second driving element 45 are concentrated and arranged on the same side of the driving assembly 40, so that the conductive component 50 used to conduct the first driving element 44 and the second driving element 45 can also be correspondingly arranged on the same side of the driving assembly 40, so as to facilitate the deployment of the conductive component 50 and simplify the electrical connection method of the driving assembly 40. Of course, in another specific example of the present application, the first driving element 44 and the second driving element 45 can also be arranged on different sides of the driving assembly 40, for example, the first driving element 44 and the second driving element 45 are respectively arranged on the opposite first and second sides of the driving assembly 40. Such an arrangement can avoid increasing the size of the driving assembly 40 and the camera module on a single side, and can enable the first driving element 44 and the second driving element 45 to avoid interference with each other during the driving process.

[0111] like Figure 6 As shown, in the embodiment of the present application, the first driving element 44 is implemented as a piezoelectric actuator. The piezoelectric actuator has nanometer-level step accuracy, which can meet the requirements of more extreme optical systems. In addition, the piezoelectric actuator is suitable for providing a large driving force, thereby meeting the driving force requirements for simultaneously driving the first carrier 42 and the second carrier 43. In a specific example, the piezoelectric actuator is implemented as a traveling wave piezoelectric actuator, which has the advantage of extremely low external environmental magnetic interference.

[0112] Specifically, the piezoelectric actuator includes a piezoelectric active portion 441 and a friction drive portion 442 fixed to the piezoelectric active portion 441. The piezoelectric active portion 441 is composed of very small piezoelectric ceramics. By applying two 90° phase-shifted sinusoidal signals to the piezoelectric active portion 441 of the first drive element 44, the piezoelectric active portion 441 is deformed, and a high-frequency AC voltage is used to cause the piezoelectric active portion 441 to resonate. The friction drive portion 442 is driveably connected to the piezoelectric active portion 441. For example, the friction drive portion 442 is fixed to the piezoelectric active portion 441. In this way, after the first drive element 44 is turned on, the piezoelectric active portion 441 can drive the friction drive portion 442, thereby driving the first carrier 42 to move.

[0113] In the embodiment of the present application, the friction driving portion 442 includes at least one friction head 4421. The first driving element 44 is in frictional contact with the first carrier 42 via the at least one friction head 4421 on the friction driving portion 442. The friction driving portion 442 is transmissionably connected to the piezoelectric active portion 441. Thus, when the piezoelectric active portion 441 is turned on, the friction driving portion 442, driven by the piezoelectric active portion 441, generates a unidirectional oscillating reciprocating motion along a preset direction (e.g., the optical axis direction). Under the action of the piezoelectric active portion 441, the friction driving portion 442 provides a driving force for driving the first carrier 42 to move.

[0114] In the embodiments of this application, 7A to 7D As shown, a traveling wave signal is provided to the piezoelectric active portion 441, causing the piezoelectric active portion 441 to deform under the inverse piezoelectric effect, driving the friction drive portion 442 to move in a traveling wave manner. The deformation of the piezoelectric active portion 441 is transmitted to the friction drive portion 442, and the traveling wave motion of the friction drive portion 442 provides a driving force for driving the first carrier 42. In another embodiment of the present application, a standing wave signal is applied to the piezoelectric active portion 441, and the deformation of the piezoelectric active portion 441 drives the friction drive portion 442 to move in a standing wave manner along a preset direction, but this application is not limited to this.

[0115] In particular, in an embodiment of the present application, the first driving element 44 is arranged above the first carrier 42 (that is, between the top surface of the first carrier 42 and the inner top surface of the driving shell 41), wherein the friction driving part 442 of the first driving element 44 is in friction contact with the top surface of the first carrier 42.

[0116] In order to increase the friction between the friction driving part 442 and the first carrier 42, in a specific example of the present application, as shown in FIG. Figure 8As shown, the first carrier 42 further includes a friction member 426, which is disposed on the top of the first carrier side arm 423 or the second carrier side arm 424, such that the friction member 426 is disposed opposite the first drive element 44. In one embodiment of the present application, the friction member 426 may be directly disposed on the top surface of the first carrier side arm 423 or the second carrier side arm 424. In another embodiment of the present application, the friction member 426 may be disposed in a groove formed downwardly on the top surface of the first carrier side arm 423 or the second carrier side arm 424 to reduce the installation height of the first drive element 44. In another embodiment of the present application, the friction member 426 may also be integral with the first carrier side arm 423 or the second carrier side arm 424, i.e., integrally formed with the side arm of the first carrier 42 through an injection molding or molding process.

[0117] Furthermore, if Figure 8 As shown, the friction member 426 is a rectangular parallelepiped structure having a friction surface arranged along the optical axis. Specifically, the friction driving portion 442 of the first driving element 44 is in frictional contact with the friction surface of the friction member 426, thereby driving the friction member 426 to move the first carrier 42. The length of the friction surface of the friction member 426 along the optical axis is greater than or equal to the travel distance of the first carrier 42.

[0118] More specifically, in this embodiment of the present application, one end of the friction drive portion 442 of the first drive element 44 is connected to the piezoelectric active portion 441, and the other end is in frictional contact with the friction member 426 of the first carrier 42. When the piezoelectric active portion 441 of the first drive element 44 is excited by power, the piezoelectric active portion 441 undergoes a surface change in a traveling wave state, thereby driving the friction drive portion 442 to produce a unidirectional oscillatory reciprocating motion along the optical axis. Due to the frictional contact between the friction drive portion 442 and the friction member 426, the friction member 426 and the first carrier 42 are driven to move along the optical axis. After a motion cycle is completed, the piezoelectric active portion 441 is lifted, and the friction drive portion 442 is separated from the friction member 426. From the separation of the friction driving part 442 and the friction member 426 to the friction contact between the friction driving part 442 and the friction member 426 again, the friction driving part 442 is repositioned and yaws again along the optical axis under the drive of the piezoelectric active part 441, thereby driving the friction member 426 and the first carrier 42 to continue to move along the optical axis. 7A to 7D shown.

[0119] It is worth mentioning that in the embodiment of the present application, in the initial state, the friction driving portion 442 can be located in the middle of the friction member 426, and the friction member 426 can be driven by the friction driving portion 442 to move along the optical axis toward the light incident side or toward the light exit side, that is, the friction member 426 can move in two directions. In another embodiment of the present application, in the initial state, the friction driving portion 442 can be located at the end of the friction member 426, that is, at the end of the friction member 426 close to the light incident side or the end of the friction member 426 close to the light exit side, and the friction member 426 can be driven by the friction driving portion 442 to move along the optical axis toward the other side.

[0120] like Figures 9 to 11 As shown, in an embodiment of the present application, in order to ensure that the friction head 4421 of the friction driving portion 442 of the first driving element 44 can stably contact the upper surface of the first carrier 42, the driving assembly 40 also provides a pre-pressure device 49, and the pre-pressure device 49 can provide pressure between the first driving element 44 and the first carrier 42, so that the friction driving portion 442 of the first driving element 44 can be frictionally coupled to the friction member 426 of the first carrier 42, so as to drive the first carrier 42 to move along the optical axis through the drive of the friction driving portion 442.

[0121] like Figures 9 to 11 As shown, the pre-pressure device 49 has an elongated structure (i.e., the pre-pressure device 49 has a relatively long length), wherein a first end of the pre-pressure device 49 is fixed to one side of the drive housing 41, and a second end of the pre-pressure device 49, opposite to the first end, is fixed to the other side of the drive housing 41 opposite to the first end, so that the pre-pressure device 49 provides a pre-pressure that causes the first drive element 44 to contact the first carrier 42. That is, in the embodiment of the present application, the pre-pressure device 49 is arranged across two opposite sides of the drive housing 41.

[0122] In the embodiment of the present application, the pre-pressure device 49 extends along the direction set by the optical axis between the opposite sides of the drive housing 41 (that is, extends along the length direction set by the drive housing 41), or the pre-pressure device 49 extends along the width direction set by the drive housing 41 between the opposite sides of the drive housing 41, which is not limited to the present application. Here, when the pre-pressure device 49 extends along the direction set by the optical axis between the opposite sides of the drive housing 41, the first end of the pre-pressure device 49 is fixed to the third side of the drive housing 41, and the second end of the pre-pressure device 49 is fixed to the fourth side of the drive housing 41; when the pre-pressure device 49 extends along the width direction set by the drive housing 41 between the opposite sides of the drive housing 41, one end of the pre-pressure device 49 is fixed to the first side of the drive housing 41, and the second end of the pre-pressure device 49 is fixed to the second side of the drive housing 41.

[0123] More specifically, in the embodiment of the present application, the pre-pressure device 49 is implemented as an elastic member, which includes a first fixing portion 491 and a second fixing portion 492 respectively fixed between opposite sides of the drive housing 41, a first deforming portion 493 extending from the first fixing portion 491 and a second deforming portion 494 extending from the second fixing portion 492, and a main body portion 495 extending between the first deforming portion 493 and the second deforming portion 494, wherein the main body portion 495 presses against the first drive element 44, so that the pre-pressure applied to the first drive element 44 by the main body portion 495 causes the first drive element 44 to contact the first carrier 42. Accordingly, in the embodiment of the present application, the end of the first fixing portion 491 forms the first end, and the end of the second fixing portion 492 forms the second end.

[0124] In particular, in the embodiment of the present application, when the pre-pressure device 49 is arranged between the drive housing 41 and the first drive element 44 along the optical axis direction, the two ends of the pre-pressure device 49 are fixed to the opposite third side and fourth side of the drive housing 41, and the pre-pressure device 49 is arranged above the first drive element 44 and abuts against the first drive element 44 to generate a downward pre-pressure in the height direction of the first drive element 44. At this time, the arrangement of the pre-pressure device 49 is perpendicular to the direction in which it generates pre-pressure.

[0125] In a specific example of the present application, the first fixing portion 491 and the second fixing portion 492 of the pre-pressure device 49 are respectively fixed to the third side arm and the fourth side arm of the drive housing 41 so that the pre-pressure device 49 is fixed to the relative third side and fourth side of the drive housing 41, wherein the main body 495 is suspended and abutted against the piezoelectric active portion 441 of the first driving element 44 through the first deformation portion 493 and the second deformation portion 494, wherein the main body 495 generates a downward pre-pressure in the height direction under the action of the first deformation portion 493 and the second deformation portion 494 to keep the main body 495 abutted against the piezoelectric active portion 441, thereby causing the friction driving portion 442 of the first driving element 44 to abut against the friction member 426 of the first carrier 42 through the pre-pressure, so that the first driving element 44 is frictionally coupled to the first carrier 42. Preferably, the extending direction of the first fixing portion 491 , the second fixing portion 492 and the main body portion 495 is consistent with the extending direction of the first driving element 44 .

[0126] In the present application, the first fixing portion 491 and the second fixing portion 492 of the pre-stressing device 49 may be fixed by adhesive or riveting. Furthermore, in other examples of the present application, the fixing position of the pre-stressing device 49 may also be adjusted. For example, the first fixing portion 491 and the second fixing portion 492 of the pre-stressing device 49 may be fixed by clamping between the upper cover 411 and the base 412.

[0127] It is worth mentioning that the first deformation portion 493 and the second deformation portion 494 of the pre-stressing device 49 have a certain length, and the length of the first deformation portion 493 and the second deformation portion 494 will affect the size of the pre-stressing force generated by the pre-stressing device 49. In one embodiment of the present application, the more bends the first deformation portion 493 and the second deformation portion 494 have, the longer the length of the first deformation portion 493 and the second deformation portion 494 will be, and the pre-stressing force generated will be relatively small; in another embodiment of the present application, the fewer bends the first deformation portion 493 and the second deformation portion 494 have, the shorter the length of the first deformation portion 493 and the second deformation portion 494 will be, and the pre-stressing force generated will be relatively large. Of course, in other embodiments of the present application, the pre-stressing device 49 has a certain degree of flatness, thereby improving the stability of the first driving element 44. It will be understood by those skilled in the art that the pre-stressing device 49 can also be an elastic adhesive, such as rubber, silicone, etc.

[0128] In the embodiment of the present application, the pre-pressure device 49 is a planar structure, that is, the first fixing portion 491, the second fixing portion 492, and the main body 495 of the pre-pressure device 49 are located at the same height plane. In other words, the first fixing portion 491, the second fixing portion 492, and the main body 495 extend along the length or width direction of the drive housing 41, rather than along the height direction of the drive housing 41. This ensures that the pre-pressure device 49 can provide sufficient pre-pressure while avoiding occupying height space. In other embodiments of the present application, the pre-pressure device 49 can also be in a ︺ or ︹ shape, that is, the main body 495 of the pre-pressure device 49 has a certain height difference from the fixing portion. For example, the first fixing portion 491 and the second fixing portion 492 are located at the same height plane, and the main body 495 is lower than the height plane where the first fixing portion 491 and the second fixing portion 492 are located.

[0129] like Figure 8 As shown, in the embodiment of the present application, the second driving element 45 is implemented as a voice coil motor, and VCM is used as the second driving element 45. This is because VCM technology is more mature, has higher feasibility and compatibility, and this configuration can avoid electromagnetic interference between the first driving element 44 and the second driving element 45. Of course, in other examples of the present application, the second driving element 45 can also be implemented as other types of drivers, for example, the second driving element 45 can also be implemented as a piezoelectric actuator, or a memory alloy actuator.

[0130] Accordingly, when the second driving element 45 is implemented as a voice coil motor, that is, when the second driving element 45 is implemented as an electromagnetic motor, as shown in FIG. Figure 8 As shown, the second driving element 45 includes a driving coil 451, a driving magnet 452, and a driving magnetic conductive sheet 453. In a specific example of the present application, the driving magnet 452 is disposed on the outer surface of the second carrier 43, and the driving coil 451 is disposed on the inner surface of the first carrier 42 and corresponds to the driving magnet 452. In this way, when energized, a driving force is generated between the driving coil 451 and the driving magnet 452 to drive the second carrier 43 to move along the optical axis.

[0131] It is worth mentioning that in an embodiment of the present application, the second carrier 43 has a second receiving groove 435 recessed on its outer surface, and the driving magnet 452 is installed in the second receiving groove 435 to reduce the lateral space occupied by the drive assembly 40 in the camera module. For example, in a specific example of the present application, the second receiving groove 435 is recessed on the outer surface of the third carrier side arm 432 or the fourth carrier side arm 433 of the second carrier 43, wherein the driving magnet 452 is installed in the second receiving groove 435. In a specific example of the present application, the first carrier 42 has a first receiving groove 420 recessed on its inner surface, and the second receiving groove 435 is arranged opposite to the first receiving groove. For example, in a specific example of the present application, the first receiving groove is recessed on the inner side wall of the first carrier side arm 423 or the second carrier side arm 424 of the first carrier 42, wherein the driving coil 451 is installed in the first receiving groove 420 and the driving coil 451 and the driving magnet 452 are also arranged opposite to each other. That is to say, the driving magnet 452 is arranged on the outer surface of the second carrier 43, and the driving coil 451 is arranged on the inner surface of the first carrier 42. The driving coil 451 corresponds to the driving magnet 452. In this way, a driving force is generated between the driving coil 451 and the driving magnet 452 after power is turned on, so as to drive the second carrier 43 to move along the optical axis alone, so as to move the second lens part 22 along the optical axis.

[0132] It is worth mentioning that in other embodiments of the present application, the first receiving groove 420 and the second receiving groove 435 can also be through holes, that is, the second receiving groove 435 passes through the inner side surface and outer side wall of the third carrier side arm 432 or the fourth carrier side arm 433 of the second carrier 43, and the first receiving groove 420 passes through the inner side surface and outer side surface of the first carrier side arm 423 or the second carrier side arm 424 of the first carrier 42.

[0133] It is worth mentioning that in other embodiments of the present application, the positions of the driving coil 451 and the driving magnet 452 can be interchanged, that is, the driving coil 451 is arranged on the second carrier 43, and the driving magnet 452 is arranged on the first carrier 42. Accordingly, the first receiving groove 420 can be used to install the driving magnet 452, and the second receiving groove 435 can be used to install the driving coil 451.

[0134] In an embodiment of the present application, the driving magnetic conductive sheet 453 is disposed on the back side of the driving magnet 452 facing the driving coil 451, so that the magnetic lines of force of the driving magnet 452 are concentrated toward the driving coil 451, thereby increasing the magnetic field strength of the second driving element 45 and reducing the leakage of the magnetic force of the driving magnet 452 to avoid affecting the photosensitive chip or circuit board. In a specific example of the present application, the area of ​​the driving magnetic conductive sheet 453 is greater than or equal to the area of ​​the driving magnet 452, that is, the driving magnetic conductive sheet 453 can completely cover the driving magnet 452. Specifically, the driving magnetic conductive sheet 453 is flat and covers the back side of the driving magnet 452; or the driving magnetic conductive sheet 453 is U-shaped with an opening, the opening facing the anti-shake coil, and the driving magnetic conductive sheet 453 covers the back side of the driving magnet 452. Furthermore, the driving magnetic conductive sheet 453 can wrap at least a portion of the side surface of the driving magnet 452. Of course, the driving magnetic conductive sheet 453 can also be set to other structures, and this application does not limit this.

[0135] In order to make the first carrier 42 move more smoothly and stably in the driving housing 41 and to make the second carrier 43 move more smoothly and stably on the first carrier 42, as shown in FIG. Figures 13 to 16 As shown, the driving assembly 40 further includes a guide component for guiding the movement of the first carrier 42 and the second carrier 43. Accordingly, in the embodiment of the present application, the guide component includes a first guide device 47 and a second guide device 48. The first guide device 47 is used to guide the first carrier 42 to move along the direction set by the optical axis within the driving housing 41, and the second guide device 48 is used to guide the second carrier 43 to move along the direction set by the optical axis on the first carrier 42, so that the movement of the first lens portion 23 and the second lens portion 22 always follows the direction set by the optical axis.

[0136] Specifically, in the embodiment of the present application, the first guiding device 47 is disposed between the drive housing 41 and the first carrier 42, and the second guiding device 48 is disposed between the first carrier 42 and the second carrier 43. That is, in the embodiment of the present application, the height of the second guiding device 48 is higher than the height of the first guiding device 47. In the embodiment of the present application, the guiding directions set by the first guiding device 47 and the second guiding device 48 are parallel to the optical axis.

[0137] In an embodiment of the present application, the first guiding device 47 includes at least one guiding element extending along the direction set by the optical axis. For example, in a specific example of the present application, the first guiding device 47 includes at least one guiding element disposed throughout the first carrier 42, and the guiding element can be implemented as a guide rod.

[0138] In particular, in the embodiment of the present application, the first guide device 47 and the second guide device 48 have a special configuration so that when the camera module is optically zooming, the first guide device 47 always supports the first carrier 42 during the movement of the first carrier 42 relative to the drive housing 41; when the camera module is optically focusing, the second guide device 48 always supports the second carrier 43 during the movement of the second carrier 43 relative to the first carrier 42, so that the first carrier 42 and the second carrier 43 can move smoothly, thereby improving the stability of the camera module. In other words, the first guide device 47 and the second guide device 48 have a special configuration so that the first guide device 47 is clamped between the first carrier 42 and the drive housing 41 and the second guide device 48 is clamped between the first carrier 42 and the second carrier 43.

[0139] Specifically, in the embodiments of the present application, Figures 12 to 17 As shown, the first guiding device 47 includes a first guiding element 471 and a second guiding element 472 disposed between the bottom surface of the first carrier 42 and the inner bottom surface of the motor housing, wherein the first guiding element 471 and the second guiding element 472 extend along the direction set by the optical axis and are symmetrically distributed relative to the optical axis. In a specific example, the first guiding element 471 and the second guiding element 472 are implemented as a first guide rod and a second guide rod, wherein the first guide rod and the second guide rod are disposed between the bottom surface of the first carrier 42 and the inner bottom surface of the drive housing 41, and the first guide rod and the second guide rod are respectively movably connected to the first carrier 42, so that the first guide rod and the second guide rod of the first guiding device 47 cooperate with the first drive element 44 to provide guidance for the movement of the first carrier 42.

[0140] Specifically, in this specific example, the ends of the first guide rod and the second guide rod are respectively fixed to the third side arm and the fourth side arm of the drive housing 41, and the first guide rod and the second guide rod are arranged relatively parallel to each other along the optical axis, so that the first guide rod and the second guide rod can be firmly disposed within the drive assembly 40. In other words, in this embodiment of the present application, the first guide rod and the second guide rod are fixedly arranged between the opposing third and fourth sides of the drive housing 41. Preferably, the first guide rod and the second guide rod are at the same height to prevent the first carrier 42 from tilting during movement.

[0141] Specifically, in the embodiment of the present application, the first driving element 44 drives the first carrier 42 to move along the optical axis. The first guide rod can serve as a main guide rod to guide the movement of the first carrier 42, and the second guide rod can serve as a secondary guide rod to prevent the first carrier 42 from tilting or rotating. In other words, the first guide rod and the second guide rod cooperate with each other to not only guide the direction but also prevent the first carrier 42 from tilting or rotating.

[0142] In particular, in the embodiments of the present application, Figures 12 to 17 As shown, the first guide rod and the first driving element 44 are arranged on the same side, and the second guide rod and the first driving element 44 are arranged on the opposite side, that is, the first driving element 44 and the first guiding element 471 are located on the same side of the first carrier 42, and the first driving element 44 and the second guiding element 472 are located on different sides of the first carrier 42. It is worth noting that in the embodiment of the present application, the first guide rod is arranged at the bottom of the first carrier 42, and the first driving element 44 is arranged at the top of the first carrier 42, that is, the first guiding element 471 and the first driving element 44 are arranged on the upper and lower sides of the first carrier 42, or in other words, the first guiding element 471 and the first driving element 44 are arranged separately, so as to make full use of the vacant space position of the driving assembly 40, making the camera module structure more compact.

[0143] Furthermore, in some embodiments of the present application, if the internal component arrangement of the driving assembly 40 is viewed along the optical axis, that is, within the plane defined by the width and height dimensions of the driving assembly 40, the first guide rod and the first driving element 44 are aligned with each other, and the position of the actuation point of the first driving element 44 on the first carrier 42 is aligned with the cross-sectional center of the first guiding element 471 in the height direction defined by the driving assembly 40. This arrangement enables the direction of the force applied by the first driving element 44 to the first carrier 42 to be perpendicular to the first guide rod, so as to prevent the first carrier 42 from rotating during movement. Figure 12 Of course, the downward pressure of the first driving element 44 in the present application may be generated by the first driving element 44 during the driving process, or may be provided to the first driving element 44 by the pre-pressure device 49, and the present application does not impose any limitation on this.

[0144] In particular, in an embodiment of the present application, as described above, the first driving element 44 is a piezoelectric actuator, which includes a piezoelectric active part 441 and a friction driving part 442 that is transmission-coupled to the piezoelectric active part 441, and the friction driving part 442 includes at least one friction head 4421 that abuts against the top surface of the first carrier 42, wherein the position where the friction head 4421 abuts against the top surface of the first carrier 42 is the position of the action point of the first driving element 44 on the first carrier 42.

[0145] Furthermore, in the embodiment of the present application, the base 412 of the drive housing 41 is provided with a pair of first lower rails on its inner bottom surface, and the bottom surface of the first carrier 42 opposite thereto is provided with a pair of first upper rails. A pair of accommodating cavities are formed between the pair of first lower rails and the pair of first upper rails, wherein the first guide rod and the second guide rod are respectively accommodated in the pair of accommodating cavities. In a specific example of the present application, the pair of first lower rails are provided on the bottom surfaces of the first carrier side arm 423 and the second carrier side arm 424 of the first carrier 42, and the pair of first upper rails are provided on the inner surface of the base 412 of the drive housing 41.

[0146] Furthermore, in an embodiment of the present application, the shape of the first upper rail is "︹" or "-", and the shape of the first lower rail is "︺" or "-". In a specific example of the present application, the shape of the first upper rail on one side is "︹", and the shape of the first upper rail on the other side is "-". Correspondingly, the shape of the first lower rail on one side is "︺", and the shape of the first lower rail on the other side is "︺". The first guide rod is arranged between the first upper rail and the first lower rail on one side, and serves as a main guide rod to provide guidance for the movement of the first carrier 42; the second guide rod is arranged between the first upper rail and the first lower rail on the other side, and serves as a secondary guide rod to prevent the first carrier 42 from tilting or rotating.

[0147] It is worth mentioning that in other embodiments of the present application, the first guiding device 47 can also be a ball or a slider. The first guiding device 47 is arranged in the accommodating cavity formed by the first upper rail and the first lower rail to support the first carrier 42 and provide guidance for the movement of the first carrier 42. The present application does not impose any restrictions on this.

[0148] To ensure that the first guiding device 47 is clamped between the first carrier 42 and the drive housing 41, in particular, in the embodiment of the present application, the first guiding element 471 and the second guiding element 472 are made of a magnetic material. That is, the first guide rod and the second guide rod are made of a magnetic material, such as iron or magnetically conductive stainless steel. This will be discussed in detail later when the magnetic components are introduced.

[0149] like Figures 12 to 17 As shown, in an embodiment of the present application, the second guiding device 48 includes a first supporting assembly 481 and a second supporting assembly 482, and the first supporting assembly 481 and the second supporting assembly 482 are arranged between the bottom surface of the second carrier 43 and the top surface of the first carrier 42, and the first supporting assembly 481 and the second supporting assembly 482 are respectively movably connected to the second carrier 43, and the first supporting assembly 481 and the second supporting assembly 482 are respectively arranged on two opposite sides of the bottom surface of the second carrier 43 along the optical axis direction to cooperate with the second driving element 45 to provide guidance for the movement of the second carrier 43.

[0150] Specifically, in a specific example of the present application, the first support assembly 481 is installed between the bottom surface of the third carrier side arm 432 of the second carrier 43 and the top surface of the first rear section 4232 of the first carrier side arm 423 of the first carrier 42. The second support assembly 482 is installed between the bottom surface of the fourth carrier side arm 433 of the second carrier 43 and the top surface of the second rear section 4232 of the second carrier side arm 424 of the first carrier 42. The first support assembly 481 and the second support assembly 482 are relatively parallel along the optical axis, so that the first support assembly 481 and the second support assembly 482 can stably support the movement of the second carrier 43. The first support assembly 481 and the second support assembly 482 are at the same height to prevent the second carrier 43 from tilting during movement.

[0151] Specifically, in an embodiment of the present application, a pair of second upper rails are provided on the top surfaces of the first carrier side arm 423 and the second carrier side arm 424 of the first carrier 42. Oppositely, a pair of second lower rails are provided on the bottom surfaces of the third carrier side arm 432 and the fourth carrier side arm 433 of the second carrier 43. A pair of accommodating cavities are formed between the pair of second upper rails and the pair of second lower rails, wherein the first support assembly 481 and the second support assembly 482 are respectively accommodated in the pair of accommodating cavities. In particular, in a specific example of the present application, the pair of second upper rails are provided on the first rear section 4232 and the second rear section 4232 of the first carrier side arm 423 and the second carrier side arm 424 of the first carrier 42, that is, the height of the second guide device 48 is lower than the height of the top surface of the first carrier 42.

[0152] In a specific example of the present application, the first support component 481 and the second support component 482 are balls. The balls are placed in the receiving cavity formed by the second upper rail and the second lower rail. The movement trajectory of the rail is restricted in the receiving cavity. The balls can move along the optical axis in the receiving cavity to provide guidance for the movement of the second carrier 43. Furthermore, the number of the first support component 481 and the second support component 482 is at least 1. In a specific example of the present application, the number of the first support component 481 is 2 and the number of the second support component 482 is 2, so as to provide more stable support for the second carrier 43 and prevent the second carrier 43 from tilting during movement. Furthermore, in some embodiments of the present application, the middle portion of the second upper rail and the second lower rail (that is, the middle portion of the receiving cavity) is divided, so that the receiving cavity on one side is divided into two half-receiving cavities, and the receiving cavity on the other side is also divided into two half-receiving cavities. This arrangement allows two balls set on the same side to be respectively accommodated in the two half-receiving cavities, so as to prevent the balls from converging on the same side during movement and causing the second carrier 43 to tilt.

[0153] Similarly, in the embodiment of the present application, the first support assembly 481 and the second support assembly 482 can also be implemented as sliders or other components with guiding functions, which is not limited to the present application.

[0154] In order to make the guiding of the first guiding device 47 and the second guiding device 48 more stable, that is, to make the first guiding device 47 able to be stably clamped between the first carrier 42 and the driving housing 41 and to make the second guiding device 48 be stably clamped between the second carrier 43 and the first carrier 42, that is, to make the first carrier 42, the first guiding device 47 and the second carrier 43 have a stable and compact relative positional relationship, and to make the second carrier 43, the first carrier 42 and the second guiding device 48 have a stable and compact relative positional relationship, in the embodiment of the present application, as Figures 18 to 20 As shown, the driving assembly 40 further includes a magnetic component. More specifically, the magnetic component includes a first magnetic member 511 and a second magnetic member 512 .

[0155] like Figures 18 to 20As shown, in an embodiment of the present application, the first magnetic attraction component 511 includes a first magnet 5112 arranged on the second carrier 43 and a first magnetic attraction element 5111 arranged on the first carrier 42 and corresponding to the first magnet 5112. The interaction force between the first magnet 5112 and the first magnetic attraction element 5111 enables the second guiding device 48 to be stably clamped between the first carrier 42 and the second carrier 43, that is, the second carrier 43 and the first carrier 42 maintain a relatively stable positional relationship.

[0156] In a specific example of the present application, the first magnet 5112 is arranged on the bottom surface of the third carrier side arm 432 and the fourth carrier side arm 433 of the second carrier 43. More specifically, the first magnet 5112 is arranged in the middle of the second lower track of the bottom surface of the third carrier side arm 432 and the fourth carrier side arm 433, that is, the first magnet 5112 serves as a partition in the middle of the second lower track, and two rollers are respectively arranged in the two semi-accommodation cavities separated by the first magnet 5112, that is, two balls are arranged on both sides of the first magnet 5112 to prevent the balls from converging on the same side when moving and causing the second carrier 43 to tilt.

[0157] Preferably, in order to avoid an increase in height, in this specific example, a first groove is provided in the middle of the second lower track, and the first magnet 5112 is placed in the first groove. It can also be said that the first magnet 5112 is completely contained in the first groove, or at least partially exposed in the first groove. The height of the first magnet 5112 exposed in the first groove is less than the height of the ball, so as to avoid affecting the movement of the second carrier 43.

[0158] In an embodiment of the present application, the first magnetic element 5111 and the first magnet 5112 are arranged corresponding to the first carrier 42, and the first magnetic element 5111 and the first magnet 5112 attract each other, so that the second carrier 43 and the first carrier 42 are pressed against each other, thereby maintaining a relatively stable positional relationship between the second carrier 43 and the first carrier 42. The second guide device 48 is clamped between the first carrier 42 and the second carrier 43 by the magnetic attraction force between the first magnetic element 5111 and the first magnet 5112, and the second carrier 43 is frictionally coupled to the first carrier 42 through the second guide device 48.

[0159] In a specific example of the present application, the first magnetic element 5111 is built into the first carrier 42 through an insert injection molding process to avoid an increase in the height of the first carrier 42, and the first magnetic element 5111 can be set to a larger size without occupying the spatial position of the drive component 40, thereby meeting the demand for greater magnetic attraction. In other examples of the present application, of course, the first magnetic element 5111 can also be formed on the lower surface of the first carrier 42 using a secondary injection molding process, and this application does not limit this. The number of the first magnetic elements 5111 is two, which are respectively arranged on opposite sides of the first carrier 42 and the second carrier 43.

[0160] like Figures 18 to 20 As shown, in the embodiment of the present application, the second magnetic member 512 includes a second magnet 5121 disposed on the first carrier 42. The second magnet 5121 and the first guide device 47 attract each other, so that the first carrier 42 and the drive housing 41 are pressed against each other. In this way, a relatively stable positional relationship between the first carrier 42 and the drive housing 41 is maintained. The first guide device 47 is clamped between the first carrier 42 and the drive housing 41 by the suction force of the second magnet 5121, and the first carrier 42 is frictionally coupled to the drive housing 41 through the first guide device 47. That is, in the embodiment of the present application, the first guide device 47 is clamped between the first carrier 42 and the drive housing 41 by the magnetic attraction force between the second magnetic member 512 and the first guide device 47.

[0161] As previously mentioned, in some specific examples of the present application, the first guide element 471 and / or the second guide element 472 of the first guide device 47 are made of a magnetic material, so that the first guide device 47 can generate a magnetic attraction force with the second magnetic member 512 to press the first carrier 42 and the drive housing 41 against each other. In this way, a relatively stable positional relationship is maintained between the first carrier 42 and the drive housing 41. The first guide device 47 is clamped between the first carrier 42 and the drive housing 41 by the attraction of the second magnet 5121, and the first carrier 42 is frictionally coupled to the drive housing 41 through the first guide device 47. That is, in the embodiment of the present application, the first guide device 47 not only serves to guide the movement of the first carrier 42, but also cooperates with the second magnetic member 512 to perform self-positioning.

[0162] In a specific example of the present application, a second groove is provided on the bottom surface of the first carrier 42, and the second magnet 5121 is placed in the second groove. The second groove can be completely contained in the second groove, or at least a portion of the second groove is exposed. The portion of the second magnet 5121 exposed in the second groove cannot touch the surface of the first guide device 47 to avoid affecting the movement of the first carrier 42. The second magnet 5121 can be embedded in the second groove, or it can be retained in the second groove by the magnetic attraction between it and the first magnetic element 5111 of the first magnetic member 511. In another specific example of the present application, the second magnet 5121 is built into the interior of the first carrier 42 through an insert injection molding process.

[0163] In particular, corresponding to the first guiding element 471 and the second guiding element 472 of the first guiding device 47, in the embodiment of the present application, the second magnetic attraction member 512 includes a pair of second magnets 5121, wherein one second magnet 5121 is mounted on the first carrier 42 and corresponds to the first guiding element 471, and the other second magnet 5121 is mounted on the second carrier 43 and corresponds to the second guiding element 472. The first guiding element 471 and the second guiding element 472 are made of magnetic attraction material to cooperate with the second magnet 5121 to generate the magnetic attraction force. Specifically, the pair of second magnets 5121 are respectively arranged on the bottom surfaces of the first carrier side arm 423 and the second carrier side arm 424. It is worth mentioning that in the embodiment of the present application, the direction of the magnetic attraction force is perpendicular to the guiding direction of the first guiding device 47.

[0164] like Figures 18 to 20As shown, one second magnet 5121 and another second magnet 5121 are arranged on the first carrier 42 in a symmetrical manner relative to the optical axis. Moreover, more preferably, in the embodiment of the present application, the center of one second magnet 5121, the center of the other second magnet 5121, and the center of gravity of the first carrier 42 are on the same horizontal line. Of course, in another specific example of the present application, the center of the one second magnet 5121, the center of the other second magnet 5121, and the center of gravity of the first carrier 42 may be on the same horizontal line or not. For example, the two second magnets 5121 may be offset in opposite directions from the horizontal line where the center of gravity of the first carrier 42 is located, that is, the line connecting the center points of the two second magnets 5121 is compared with the horizontal line where the center of gravity of the first carrier 42 is located, wherein one second magnet 5121 is close to the third side and the other second magnet 5121 is close to the fourth side. This arrangement allows the first carrier 42 to remain stable in the drive housing 41 and can avoid magnetic interference with the first position sensing device to be described later.

[0165] More preferably, the center of one second magnet 5121 , the center of another second magnet 5121 , and the center of gravity of the first carrier 42 are at the same height relative to the inner bottom surface of the driving housing 41 .

[0166] It is worth noting that in the embodiment of the present application, the first magnetic element 5111 is disposed between the first magnet 5112 and the second magnet 5121. The first magnetic element 5111 is larger than both the first magnet 5112 and the second magnet 5121. The magnetic attraction generated between the first magnetic element 5111 and the first magnet 5112 compresses the second carrier 43 and the first carrier 42 against each other. A magnetic attraction is also generated between the first magnetic element 5111 and the second magnet 5121, securing the second magnet 5121 to the first carrier 42. Due to the limited internal space of the drive assembly 40, the magnetic attraction between the first magnet 5112 and the second magnet 5121 cannot be increased by enlarging the size of the first magnet 5112 and the second magnet 5121. The larger size of the first magnetic element 5111 can increase the mutual attraction between the first magnetic element 5111 and the first magnet 5112, and between the first magnetic element 5111 and the second magnet 5121.

[0167] like Figures 18 to 20As shown, in the embodiment of the present application, the first magnet 5112, the first magnetic element 5111, and the second magnet 5121 are stacked in the height direction, and the first magnetic element 5111 can isolate the magnetic field between the first magnet 5112 and the second magnet 5121 to avoid magnetic interference between the first magnet 5112 and the second magnet 5121. Specifically, the first magnetic element 5111 is located between the first magnet 5112 and the second magnet 5121 in the height direction set by the driving assembly 40.

[0168] In particular, in the embodiment of the present application, the size of the first magnetic element 5111 is larger than the stroke of the first magnet 5112, so that the magnetic force of the first magnetic element 5111 is concentrated downward. If the first magnetic element 5111 is not provided, or the size of the first magnetic element 5111 is too small, or the first magnetic element 5111 is not provided between the first magnet 5112 and the second magnet 5121, the first magnet 5112 and the second magnet 5121 will attract each other, thereby affecting the movement of the second carrier 43. Furthermore, the second magnet 5121 can be provided below the first magnetic element 5111 and in contact with the first magnetic element 5111 to increase the magnetism of the second magnet 5121.

[0169] like Figure 21 As shown, in the embodiment of the present application, the driving assembly 40 further includes a position sensing component for sensing the positions of the first carrier 42 and the second carrier 43 , wherein the position sensing component includes a first position sensing device 461 and a second position sensing device 462 .

[0170] In the embodiment of the present application, the first position sensing device 461 is disposed between the first carrier 42 and the drive housing 41 to sense the position of the first carrier 42. Furthermore, the first position sensing device 461 is disposed between the first carrier 42 and the sidewall of the drive housing 41 to avoid increasing the height of the drive assembly 40. In other embodiments of the present application, the first position sensing device 461 may also be disposed between the first carrier 42 and the bottom or top of the drive housing 41.

[0171] Specifically, in an embodiment of the present application, the first position sensing device 461 includes a first position sensing element 4610 and a first position sensing magnet 4611. In a specific example of the present application, the first position sensing magnet 4611 is disposed on the outer side wall of the first carrier 42, and the first position sensing element 4610 is disposed opposite thereto on the inner side wall of the drive housing 41. Furthermore, a third groove is disposed on the outer side surface of the first carrier side arm 423 or the second carrier side arm 424 of the first carrier 42, and the first position sensing magnet 4611 is disposed in the third groove. A first through hole is disposed on the inner side surface of the first side arm or the second side arm of the drive housing 41, and the first through hole extends from the inner side surface of the first side arm or the second side arm of the drive housing 41 to the outer side surface of the first side arm or the second side arm. The third groove is arranged opposite to the first through hole, the first position sensing magnet 4611 is arranged in the third groove, and the first position sensing element 4610 is arranged in the first through hole, that is, the first position sensing magnet 4611 is arranged opposite to the first position sensing element 4610. The first position sensing element 4610 can sense the movement of the first position sensing magnet 4611. Of course, after sensing the position movement of the first position sensing magnet 4611, the sensed position information can also be fed back and processed. In a specific example of the present application, the first position sensing magnet 4611 is a magnetic grid.

[0172] In the embodiment of the present application, the second position sensing device 462 is disposed between the second carrier 43 and the first carrier 42 to sense the position of the second carrier 43. Furthermore, the second position sensing device 462 is disposed between the sidewalls of the second carrier 43 and the first carrier 42 to avoid increasing the height of the drive assembly 40. In other embodiments of the present application, the second position sensing device 462 may also be disposed between the bottom or top of the first carrier 42 and the second carrier 43.

[0173] Specifically, in an embodiment of the present application, the second position sensing device 462 includes a second position sensing element 4620. In a specific example of the present application, the second position sensing element 4620 is disposed in the first receiving groove 420 of the first carrier 42, and is disposed opposite to the driving magnet 452 to sense the moving position of the driving magnet 452. Of course, after sensing the position movement of the driving magnet 452, the sensed position information can also be fed back and processed. In a specific example of the present application, the second position sensing element 4620 is disposed in the driving coil 451 and corresponds to the driving magnet 452.

[0174] More specifically, in an embodiment of the present application, the first position sensing element 4610 and the second position sensing element 4620 are Hall elements; in other embodiments of the present application, the first position sensing element 4610 and the second position sensing element 4620 are driving chips, which are suitable for obtaining the position changes of the first position sensing magnet 4611 and the driving magnet 452 while controlling the corresponding current.

[0175] like Figure 21 and Figure 22 As shown, in an embodiment of the present application, the drive assembly 40 further includes a conductive component 50 for electrical conduction, wherein the conductive component 50 includes a first conductive element 610, a second conductive element 620, and a third conductive element 630. As mentioned above, the first position sensing element 4610 is disposed in the first through hole of the drive housing 41. To simplify the electrical connection structure of the first position sensing element 4610, the first conductive element 610 is disposed on the outer side surface of the first side arm or the second side arm of the drive housing 41 corresponding to the first through hole, that is, the first conductive element 610 is disposed on the same side as the first position sensing element 4610. This arrangement allows the first position sensing element 4610 to be disposed on the first conductive element 610 to achieve circuit conduction of the first position sensing element 4610. In a specific example of the present application, the first conductive element 610 is a first circuit board 501. More specifically, the first circuit board 501 is preferably a flexible board.

[0176] In the embodiment of the present application, the second conductive element 620 is disposed on the outer side surface of the first carrier side arm 423 or the outer side surface of the second carrier side arm 424 of the first carrier 42. The second conductive element 620 corresponds to the first receiving slot 420 of the first carrier 42. That is, the second conductive element 620 is disposed on the same side as the drive coil 451. The drive coil 451 is directly electrically connected to the second conductive element 620, thereby simplifying the circuit conduction of the second drive element 45. In a specific example of the present application, the second conductive element 620 is a second circuit board 502. More specifically, the second circuit board 502 is preferably also implemented as a flexible circuit board.

[0177] In the embodiment of the present application, the third conductive element 630 includes a third circuit board 503 and a fourth circuit board 504, wherein the third circuit board 503 and the fourth circuit board 504 are arranged on the same side as the first driving element 44 to simplify the circuit conduction of the first driving element 44. Furthermore, in the embodiment of the present application, the third circuit board 503 includes a first electrical connection end 5031 and a second electrical connection end 5032. The first electrical connection end 5031 of the third circuit board 503 is fixedly arranged on the first driving element 44 and is electrically connected to the piezoelectric active part 441 of the first driving element 44. The second electrical connection end 5032 of the third circuit board 503 extends to the outer side surface of the driving housing 41 and is suitable for being electrically connected to the photosensitive component 30. The first electrical connection end 5031 and the second electrical connection end 5032 of the third circuit board 503 are connected by a first bending portion 5033. More specifically, in the embodiment of the present application, the second electrical connection end 5032 of the third circuit board 503 is fixed to the outer side of the first side arm or the second side arm of the drive housing 41, and the second electrical connection end 5032 can extend toward the fourth side of the drive housing 41, that is, toward the photosensitive component 30 and electrically connected to the circuit board of the photosensitive component 30. Furthermore, a reinforcement plate can be provided on the second electrical connection end 5032 of the third circuit board 503 to increase the hardness of the second electrical connection end 5032.

[0178] Specifically, in the embodiment of the present application, the fourth circuit board 504 includes a first section 5043 having a third electrical connection end 5041 and a second section 5044 having a fourth electrical connection end 5042, wherein the first section 5043 is fixed to the first carrier 42, and the second section 5044 is fixed to the drive housing 41, and at least a portion of the first section 5043 and the second section 5044 overlap in the height direction set by the drive assembly 40. And, as Figure 22 As shown, in the embodiment of the present application, the fourth circuit board 504 further includes a second bending portion 5045 extending in a bent manner between the first section 5043 and the second section 5044 .

[0179] In a specific example of the present application, the third electrical connection end 5041 is fixed to the first carrier 42 and electrically connected to the second circuit board 502, and the fourth electrical connection end 5042 is fixed to the drive housing 41 and electrically connected to the third circuit board 503. More specifically, the first section 5043 of the fourth circuit board 504 is fixed to the top surface of the first carrier 42, and the second section 5044 of the fourth circuit board 504 is fixed to the inner bottom surface of the drive housing 41. That is, in this specific example, the fourth circuit board 504 is disposed between the second circuit board 502 and the third circuit board 503 to be electrically connected to the second circuit board 502 and the third circuit board 503 via the fourth circuit board 504.

[0180] Furthermore, in this specific example, the bottom of the third side arm or the fourth side arm of the drive housing 41 has a second through hole, and the terminal of the fourth electrical connection end 5042 is electrically connected to the third circuit board 503 through the second through hole.

[0181] Specifically, in the embodiment of the present application, the first section 5043 and the second section 5044 are parallel to each other, and the extending direction of the first section 5043 and the second section 5044 is consistent with the direction set by the optical axis. In terms of shape, in the embodiment of the present application, the first section 5043, the second section 5044, and the second bent portion 5045 have a U-shaped structure.

[0182] To illustrate the specific extensions of the first section 5043, the second section 5044, and the second bend 5045, in this embodiment of the present application, the first carrier 42 is divided into a first portion and a second portion based on the locations of the first mounting cavity 421 and the second mounting cavity 422, wherein the first mounting cavity 421 is located in the first portion, and the second mounting cavity 422 is located in the second portion. Accordingly, in this embodiment of the present application, the first section 5043 of the fourth electrical connection plate extends from the third electrical connection end 5041 from the second portion of the first carrier 42 to its first portion, the second section 5044 of the fourth electrical connection plate extends from the first portion of the first carrier 42 to its second portion, and the second bend 5045 extends in a curved manner between the first section 5043 and the second section 5044. That is, in this embodiment of the present application, the opening of the U-shaped structure formed by the first section 5043, the second section 5044, and the second bend 5045 corresponds to the photosensitive assembly 30.

[0183] In order to meet the stroke requirements of the first carrier 42, in an embodiment of the present application, the sum of the lengths of the first section 5043 and the second section 5044 is greater than the stroke requirements of the first carrier 42. In this way, when the first driving element 44 drives the first carrier 42 to move relative to the driving housing 41 along the direction set by the optical axis, the shape of the bending portion 5045 remains unchanged, and the length of the change in the first straight line segment is equal to the length of the change in the second straight line segment.

[0184] Accordingly, when the first carrier 42 moves along the optical axis toward the third side (i.e., toward the light deflecting element 10), the first carrier 42 drives the third electrical connection end 5041 to move, while the fourth electrical connection end 5042 remains fixed to the drive housing 41, so that while the U-shaped structure of the curved section remains unchanged, the length of the first section 5043 decreases and the length of the second section 5044 increases. Accordingly, when the first carrier 42 moves along the optical axis toward the third side (i.e., toward the photosensitive component 30), the first carrier 42 drives the third electrical connection end 5041 to move, while the fourth electrical connection end 5042 remains fixed to the drive housing 41, so that while the U-shaped structure of the curved section remains unchanged, the length of the first section 5043 increases and the length of the second section 5044 decreases.

[0185] In summary, the zoom camera module based on the embodiment of the present application is explained, wherein the zoom camera module adopts a "parent-child" driving scheme to provide support for the zoom drive at the structural end, and utilizes an optimized driving control scheme to enable the zoom camera module to perform optical zoom at a relatively fast rate.

Claims

1. A drive assembly, characterized in that: include: Drive housing; a first carrier movably mounted in the drive housing, the first carrier having a first mounting cavity adapted to mount a first lens portion therein, the first lens portion being provided with an optical axis; a first driving element for driving the first carrier to move in the driving housing along a direction set by the optical axis; a pre-pressure device disposed between the first drive element and the drive housing, adapted to provide a pre-pressure force causing the first drive element to contact the first carrier, wherein a first end of the pre-pressure device is fixed to one side of the drive housing, and a second end of the pre-pressure device opposite to the first end is fixed to another side of the drive housing opposite to the first end; The first driving element is a piezoelectric actuator, which is arranged on the top surface of the first carrier. The pre-pressure device is arranged between the top surface of the first driving element and the driving housing. The pre-pressure device extends between the opposite sides of the driving housing along the length direction set by the driving housing.

2. The drive assembly according to claim 1, wherein: The pre-pressure device includes a first fixing portion and a second fixing portion respectively fixed between opposite sides of the drive housing, a first deformation portion extending from the first fixing portion and a second deformation portion extending from the second fixing portion, and a main body portion extending between the first deformation portion and the second deformation portion, wherein an end portion of the first fixing portion forms the first end, an end portion of the second fixing portion forms the second end, and the main body portion presses on the first drive element so that the pre-pressure applied to the first drive element by the main body portion causes the first drive element to contact the first carrier.

3. The drive assembly according to claim 2, wherein: The first fixing portion, the second fixing portion and the main body are located at the same height plane.

4. The drive assembly according to claim 3, wherein: The first fixing portion and the second fixing portion are located at the same height plane, and the main body is lower than the height plane where the first fixing portion and the second fixing portion are located.

5. The drive assembly according to claim 2, wherein: The extending directions of the first fixing portion, the second fixing portion and the main body portion are consistent with the extending direction of the first driving element.

6. The drive assembly according to claim 1, wherein: The piezoelectric actuator is arranged between the top surface of the first carrier and the drive housing. The piezoelectric actuator includes a piezoelectric active part and a friction driving part movably connected to the piezoelectric active part. The friction driving part contacts the top surface of the first carrier through the pre-pressure provided by the pre-pressure device.

7. The drive assembly according to claim 6, wherein: The drive assembly further includes a first guiding device for guiding the first carrier to move in the drive housing along the direction set by the optical axis, wherein the direction of the preload provided by the preload device acting on the first drive element is perpendicular to the guiding direction of the first guiding device.

8. The drive assembly according to claim 7, wherein: The first guiding device includes a first guiding element and a second guiding element arranged on opposite sides of the first carrier. The first guiding element and the pre-pressure device are located on the same side of the first carrier, and the second guiding element and the pre-pressure device are located on different sides of the first carrier.

9. The drive assembly according to claim 8, wherein: The direction of the pre-pressure provided by the pre-pressure device and acting on the first driving element is perpendicular to the extension direction of the first guiding element.

10. The drive assembly according to claim 9, wherein: The first guiding element is a first guiding rod extending along a direction set by the optical axis.

11. The drive assembly according to claim 6, wherein: The driving assembly further includes a second carrier movably mounted on the first carrier, the second carrier being adapted to mount a second lens portion therein, and a second driving element for driving the second carrier to move relative to the first carrier.

12. The drive assembly according to claim 11, wherein: The driving assembly further includes a second guiding device arranged between the first carrier and the second carrier and used to guide the second carrier to move relative to the first carrier along the direction set by the optical axis, wherein the direction of the pre-pressure provided by the pre-pressure device acting on the first driving element is perpendicular to the guiding direction of the second guiding device.

13. A zoom camera module, characterized in that: include: The drive assembly according to any one of claims 1 to 12; a third lens portion fixedly mounted on the light incident side of the drive housing; a first lens portion mounted within a first carrier of the drive assembly; a second lens portion mounted within a second carrier of the drive assembly; as well as A photosensitive component is arranged on the light-emitting side of the drive housing.

14. The zoom camera module according to claim 13, further comprising: A light deflecting element for deflecting imaging light, wherein the third lens portion, the second lens portion and the first lens portion are maintained on a light deflecting path of the light deflecting element.

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