Drive assembly and variable focus camera module

Abstract

Disclosed are a driving assembly and a variable-focus camera module, wherein the conductive circuit for conducting the first driving element, the second driving element and the position sensing device in the driving assembly has a special arrangement mode, so that on the one hand, the wiring of the conductive circuit is relatively simple, and on the other hand, the arrangement of the conductive circuit does not hinder the movement of the driving carrier along the optical axis direction.

Description

TECHNICAL FIELD

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

[0002] With the popularity of mobile electronic devices, the related technology of camera modules applied to mobile electronic devices to help users obtain images has developed rapidly and made great progress. At present, with the improvement of living standards, consumers have increasingly high and diversified functional requirements for camera modules configured in mobile electronic devices (for example, smart phones). Not only do they require camera modules configured in terminal devices to be able to realize optical image stabilization to reduce the impact of shaking on imaging quality during shooting, but they also require the ability to realize zoom shooting to clearly capture clear images of subjects at different distances through optical zoom.

[0003] In order to realize the function of zoom shooting, one of the current solutions is to configure a zoom lens in the camera module to form an optical zoom camera module. The optical zoom camera module changes the focal length of the zoom lens by changing the distance between the lenses in the zoom lens to achieve zooming, which can clearly capture clear images of subjects at different distances.

[0004] In the optical zoom camera module, the 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 zoom camera module configures one driving element for the zoom part and the focus part, respectively. In the zooming process, the current practice is to first move the zoom part to a preset position by one driving element; then, the focus part is moved to focus by another driving element, so that the imaging of the optical zoom camera module is clear. In this way, the optical zooming process is completed. However, as consumers have increasingly high requirements for zooming accuracy, zooming speed, and the size of the optical zoom camera module, the existing structure design scheme and optical zoom driving scheme of the optical zoom camera module have gradually become difficult to meet the requirements.

[0005] Specifically, in the current zooming scheme of the optical zoom camera module, the zoom part and the focus part are separately driven in batches to perform optical zooming, that is, the zoom part is moved first, and then the focus part is moved. It should be particularly noted that, in the zooming process, because it is not known where the zoom part should be moved to, the zoom part needs to be moved to the preset position almost throughout the stroke, which will result in a relatively slow zooming speed, affecting the user's shooting experience.

[0006] Secondly, in order to obtain clear imaging, when the focusing part is driven by the second driving element, the focusing part needs to be controlled to run out of focus for the full stroke, that is, the focusing lens part needs to run from the farthest to the nearest to determine the position of clear imaging. The above method is inefficient on the one hand, and on the other hand, it will also produce image blur when focusing to infinity, affecting the user's shooting experience.

[0007] Therefore, an optimized zoom module design scheme is expected. SUMMARY

[0008] An advantage of the present application is to provide a driving assembly and a variable focus camera module, wherein the variable focus camera module adopts a "parent-child type" driving scheme to provide driving support for zoom driving, wherein the "parent-child type" driving scheme can drive the variable focus camera module to realize adjustment of optical performance such as optical zoom and / or optical focusing at a relatively faster speed.

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

[0010] Another advantage of the present application is to provide a variable focus camera module, wherein the conductive circuit for conducting the first driving element, the second driving element, and the position sensing device in the driving assembly has a special arrangement, so that on the one hand, the wiring of the conductive circuit is relatively simple, and on the other hand, the arrangement of the conductive circuit does not hinder the movement of the driving carrier along the optical axis direction.

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

[0012] To achieve at least one of the above advantages, the present application provides a driving assembly, which comprises:

[0013] a driving housing;

[0014] a first carrier accommodated in the driving housing, wherein the first carrier has a first mounting cavity adapted to mount a first lens part therein, and the first lens part is provided with an optical axis;

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

[0016] The conductive member includes a third circuit board and a fourth circuit board, wherein the third circuit board includes a first electrical connection end and a second electrical connection end opposite to the first electrical connection end, the first electrical connection end is electrically connected to the first driving element; and

[0017] The fourth circuit board includes a first section having a third electrical connection end and a second section having a fourth electrical connection end, wherein the first section is fixed to the first carrier, the second section is fixed to the driving housing, and at least a portion of the first section and the second section overlap in a direction of a height set by the driving assembly.

[0018] In the driving assembly according to the present application, the fourth circuit board further includes a second bending portion extending between the first section and the second section.

[0019] In the driving assembly according to the present application, the first section of the fourth circuit board is fixed to a top surface of the first carrier, and the second section of the fourth circuit board is fixed to an inner bottom surface of the driving housing.

[0020] In the driving assembly according to the present application, the first section of the fourth circuit board is fixed to the first carrier in a manner that the third electrical connection end of the first section is fixed to a top surface of the first carrier, and the second section of the fourth circuit board is fixed to the driving housing in a manner that the second electrical connection end of the second section is fixed to an inner bottom surface of the driving housing.

[0021] In the driving assembly according to the present application, the first section and the second section are parallel to each other.

[0022] In the driving assembly according to the present application, the first section and the second section extend in a direction consistent with a direction set by the optical axis.

[0023] In the driving assembly according to the present application, the first carrier includes a first portion and a second portion adjacent in a direction set by the optical axis, the first mounting cavity is located in the first portion, wherein the first section of the fourth electrical connection board extends from the third electrical connection end from the second portion of the first carrier to the first portion thereof, the second section of the fourth electrical connection board extends from the first portion of the first carrier to the second portion thereof, and the second bending portion extends between the first section and the second section.

[0024] In the driving assembly according to the present application, the first section, the second section and the second bending portion have a U-shaped structure.

[0025] In the driving assembly according to the present application, a sum of lengths of the first section and the second section is greater than a stroke requirement of the first carrier.

[0026] In the drive assembly according to the present application, when the first driving element drives the first carrier to move in the direction set along the optical axis relative to the drive housing, the length of the first straight line segment changes equal to the length of the second straight line segment.

[0027] In the drive assembly according to the present application, the second electrical connection end of the third circuit board extends to the outer side of the drive housing and is adapted to be electrically connected to the light sensing assembly, the third circuit board further comprises a first bending portion which is bently extended between the first electrical connection end and the second electrical connection end, and the fourth electrical connection end of the fourth circuit board is electrically connected to the third circuit board.

[0028] In the drive assembly according to the present application, the first carrier further has a second mounting cavity located at the second portion thereof, and the drive assembly further comprises a second carrier which is movably mounted in the second mounting cavity, and a second driving element for driving the second carrier to move in a direction set along the optical axis relative to the first carrier.

[0029] In the drive assembly according to the present application, the conductive component further comprises a second circuit board which is arranged at the second portion, one end of the second circuit board is electrically connected to the second driving element, and the other end of the second circuit board is electrically connected to the third electrical connection end of the fourth circuit board.

[0030] In the drive assembly according to the present application, the second circuit board is arranged at the outer surface of the second carrier, or the second circuit board is arranged at the inner side of the second portion of the first carrier.

[0031] According to another aspect of the present application, there is also provided a variable focus camera module, comprising:

[0032] The drive assembly as described above;

[0033] A third lens portion which is fixedly mounted at the light-in side of the drive housing;

[0034] A first lens portion which is mounted in the first carrier of the drive assembly;

[0035] A second lens portion which is mounted in the second carrier of the drive assembly; and

[0036] A light sensing assembly which is arranged at the light-out side of the drive housing.

[0037] In the variable focus camera module according to the present application, the variable focus camera module further comprises a light turning element for turning the imaging light, wherein the third lens part, the second lens part and the first lens part are held on a light turning path of the light turning element.

[0038] The further objects and advantages of the present application will be more fully understood from the following description and drawings.

[0039] The objects, features and advantages of the present application will be more fully understood from the following detailed description, taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0040] The above and other objects, features and advantages of the present application will become more fully understood from the following detailed description taken in conjunction with the accompanying drawings. The drawings provided herein are for illustrative purposes only and, therefore, are not to be construed as being providing limitations to the present application. In these drawings, like reference numerals refer to like elements or steps throughout the several views.

[0041] FIG. 1 is a perspective view of a variable focus camera module according to an embodiment of the present application.

[0042] FIG. 2 is an exploded perspective view of the variable focus camera module according to an embodiment of the present application.

[0043] FIG. 3 is another exploded perspective view of the variable focus camera module according to an embodiment of the present application.

[0044] FIG. 4 is a perspective view of a driving carrier in the variable focus camera module according to an embodiment of the present application.

[0045] FIG. 5 is an exploded perspective view of the driving carrier according to an embodiment of the present application.

[0046] FIG. 6 is a plan view of the variable focus camera module according to an embodiment of the present application.

[0047] FIGS. 7A-7D is a schematic view of a first driving element driving a first carrier in the variable focus camera module according to an embodiment of the present application.

[0048] FIG. 8 is another exploded perspective view of the variable focus camera module according to an embodiment of the present application.

[0049] FIG. 9A top view schematic diagram of the variable focus camera module according to an embodiment of the present application.

[0050] FIG. 10 Another perspective view schematic diagram of the variable focus camera module according to an embodiment of the present application.

[0051] FIG. 11 Another perspective view schematic diagram of the variable focus camera module according to an embodiment of the present application.

[0052] FIG. 12 Another plan view schematic diagram of the variable focus camera module according to an embodiment of the present application.

[0053] FIG. 13 Another perspective view schematic diagram of the variable focus camera module according to an embodiment of the present application.

[0054] FIG. 14 Another plan view schematic diagram of the variable focus camera module according to an embodiment of the present application.

[0055] FIG. 15 Another plan view schematic diagram of the variable focus camera module according to an embodiment of the present application.

[0056] FIG. 16 Another perspective view schematic diagram of the variable focus camera module according to an embodiment of the present application.

[0057] FIG. 17 Another perspective view schematic diagram of the variable focus camera module according to an embodiment of the present application

[0058] FIG. 18 Another plan view schematic diagram of the variable focus camera module according to an embodiment of the present application.

[0059] FIG. 19 Another plan view schematic diagram of the variable focus camera module according to an embodiment of the present application.

[0060] FIG. 20 Another plan view schematic diagram of the variable focus camera module according to an embodiment of the present application.

[0061] FIG. 21 Another perspective view schematic diagram of the variable focus camera module according to an embodiment of the present application.

[0062] FIG. 22 Another perspective view schematic diagram of the variable focus camera module according to an embodiment of the present application. DETAILED DESCRIPTION

[0063] Hereinafter, exemplary embodiments according to this application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this application, and not all embodiments of this application. It should be understood that this application is not limited to the exemplary embodiments described herein.

[0064] Exemplary variable focus camera module

[0065] like FIGS. 1-22 As shown, a zoom camera module according to an embodiment of this application is illustrated, wherein the zoom camera module is implemented as a zoom periscope camera module, which includes: a light-shifting element 10, a zoom lens 20, a photosensitive component 30, and a driving component 40. It should be understood that in other embodiments of this application, the zoom camera module may also be implemented as other types of camera modules, such as a conventional upright zoom camera module, and this is not limited to this application.

[0066] like FIG. 1 As shown in this embodiment, the light-deflecting element 10 is used to receive imaging light from the target and deflect the imaging light to the zoom lens 20. Specifically, in this embodiment, the light-deflecting element 10 is configured to deflect the imaging light from the target by 90°, so that the overall height of the zoom camera module can be reduced. Here, 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 should be understood by those skilled in the art.

[0067] In a specific example of this application, the light-deflecting element 10 can be implemented as a mirror (e.g., a plane mirror) 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 is perpendicular to its light exiting surface, and the light reflecting surface of the light-deflecting prism is inclined at a 45° angle to the light incident surface and the light exiting surface. In this way, when the imaging light can be deflected at 90° at the light reflecting surface, it can be output from the light exiting surface perpendicular to the light exiting surface.

[0068] Of course, in other examples of this application, the light-deflecting element 10 can also be implemented as other types of optical elements, and this is not limited to this application. Furthermore, in the embodiments of this application, the zoom camera module can also include a greater number of light-deflecting elements 10. One reason for this is that one function of introducing the light-deflecting element 10 is to deflect the imaging light rays, so that the optical system of the zoom camera module, which has a long total track length (TTL), can be structurally folded. Accordingly, when the total track length (TTL) of the zoom camera module is too long, a greater number of light-deflecting elements 10 can be provided to meet the size requirements of the zoom camera module. For example, the light-deflecting element 10 can be placed on the image side of the zoom camera module or between two optical lenses.

[0069] It is worth mentioning that, in some examples of this application, an optical deflection driving element (not shown in the figure) can also be configured for the optical deflection element 10, which is used to drive the optical deflection element 10 to perform yaw and / or pitch movements, thereby realizing the optical image stabilization function of the zoom periscope camera module.

[0070] like FIG. 1 As shown in this embodiment, the zoom lens 20 is held on the light-reversing path of the light-reversing element 10 to receive imaging light from the light-reversing 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 of the zoom lens 20 (that is, from the light-incident side to the light-outcident 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 driving component 40, thereby adjusting the optical performance of the zoom camera module, including but not limited to optical focusing and optical zoom functions. Specifically, the second lens portion 22 and the first lens portion 23 can be adjusted by the driving component 40 to adjust the focal length of the zoom lens 20 of the zoom camera module, thereby enabling clear imaging of subjects at different distances.

[0071] The third lens portion 21 includes a third lens barrel and at least one optical lens housed within the third lens barrel. In a specific example of this application, the third lens portion 21 is implemented as a fixed lens portion, wherein the fixed lens portion is adapted to be fixed to a non-moving portion of the drive assembly 40 so that the fixed lens portion remains in a constant position within the zoom lens 20.

[0072] It is worth mentioning that in other examples of the present application, the third lens part 21 can also not be provided with the third lens barrel, and only include at least one optical lens, for example, only include a plurality of optical lenses embedded with each other. That is, in other examples of the application, the third lens part 21 can be implemented as a "bare lens".

[0073] The first lens part 23 includes a first lens barrel and at least one optical lens accommodated in the first lens barrel. In one specific example of the present application, the first lens part 23 is implemented as a zoom lens part, wherein the zoom lens part is adapted to be driven by the driving assembly 40 to move along the optical axis direction set by the zoom lens 20, thereby realizing the optical zoom function of the variable focus camera module, so that the variable focus camera module can realize clear shooting of the subject at different distances.

[0074] In the embodiments of the present application, the second lens part 22 includes a second lens barrel and at least one optical lens accommodated in the second lens barrel. In one specific example of the present application, the second lens part 22 is implemented as a focusing lens part, wherein the focusing lens part is adapted to be driven by the driving assembly 40 to move along the optical axis direction set by the zoom lens 20, thereby realizing the focusing function of the variable focus camera module. More specifically, the optical focusing realized by driving the focusing lens part can compensate for the focus shift caused by moving the zoom lens part, thereby compensating for the imaging performance of the variable focus camera module so that its imaging quality meets the preset requirements.

[0075] It is worth mentioning that in other examples of the present application, the second lens part 22 can also not be provided with the second lens barrel, and only include at least one optical lens, for example, only include a plurality of optical lenses embedded with each other. That is, in other examples of the application, the second lens part 22 can also be implemented as a "bare lens".

[0076] It is worth mentioning that in other examples of the present application, the first lens part 23 can also not be provided with the first lens barrel, and only include at least one optical lens, for example, only include a plurality of optical lenses embedded with each other. That is, in other examples of the application, the first lens part 23 can also be implemented as a "bare lens".

[0077] More specifically, as FIG. 1As shown, in the embodiment of the present application, the third lens part 21, the first lens part 23 and the second lens part 22 are sequentially arranged from the light-in side of the variable-focus periscope camera module to the light-out side thereof, wherein the light-in side is adjacent to the light-turning element 10 and the light-out side is adjacent to the photosensitive assembly 30. In one specific example of the present application, the second lens part 22, the first lens part 23 and the third lens part 21 are respectively implemented as a focusing lens part, a zoom lens part and a fixed lens part, that is, in the zoom lens 20, the zoom lens part is located between the fixed lens part and the focusing lens part, that is, the imaging light rays from the light-turning element 10 will sequentially pass through the fixed lens part, the zoom lens part and then the focusing lens part when passing through the zoom lens 20.

[0078] In other examples of the present application, the relative position relationship among the fixed lens part, the zoom lens part and the focusing lens part can also be adjusted. For example, in one specific implementation, the focusing 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 respectively implemented as the fixed lens part, the focusing lens part and the zoom lens part. In another specific implementation of the present application, the fixed lens part is arranged between the zoom part and the focusing part. It should be understood that in the embodiment of the present application, the relative position relationship among the fixed lens part, the zoom lens part and the focusing lens part can be adjusted according to the optical design requirements and structural design requirements of the variable-focus camera module.

[0079] Considering the structural design of the variable-focus camera module, preferably, the focusing lens part and the zoom lens part are arranged adjacently. That is, according to the position of each part in the zoom lens 20 implemented by the present application, it is preferably configured that the zoom lens part is located between the fixed lens part and the focusing lens part, or the focusing lens part is located between the fixed lens part and the zoom lens part. It should be understood that the zoom lens part and the focusing lens part are parts that need to be moved in the zoom lens 20, therefore, by adjacently arranging the focusing lens part and the zoom lens part, such position setting is conducive to arranging the driving assembly 40, which will be expanded in the specific description of the driving assembly 40.

[0080] It is also worth mentioning that, in the embodiment of the present application, the variable-focus periscope camera module is implemented as a variable-focus periscope camera module with a fixed focal length, that is, the variable-focus periscope camera module has a fixed focal length. It should be understood that the variable-focus periscope camera module can also be implemented as a variable-focus periscope camera module with a variable focal length, that is, the variable-focus periscope camera module has a variable focal length. FIG. 1In the illustrated example, although the zoom lens 20 includes one second lens part 22, one first lens part 23 and one third lens part 21, it is known to those skilled in the art that the specific number of the second lens part 22, the first lens part 23 and the third lens part 21 is not limited in the present application, and can be adjusted according to the optical design requirements of the variable focus camera module.

[0081] As shown in the embodiment of the present application, the photosensitive assembly 30 corresponds to the zoom lens 20, and is configured to receive imaging light from the zoom lens 20 and perform imaging. The photosensitive assembly 30 includes a circuit board, a photosensitive chip electrically connected to the circuit board, and a filter element held on the photosensitive path of the photosensitive chip. In a specific example, the photosensitive assembly 30 further includes a lens seat provided on the circuit board, and the filter element is mounted on the lens seat to be held on the photosensitive path of the photosensitive chip. FIG. 1 Accordingly, in the embodiment of the present application, the photosensitive chip is configured to receive external light collected by the zoom lens 20 and perform imaging, and is electrically connected to a mobile electronic device (e.g., a smart phone) through the circuit board. The photosensitive chip includes a photosensitive region and a non-photosensitive region, and is electrically connected to the circuit board through pads located in the non-photosensitive region, for example, by wire bonding (gold wire), soldering, FC technology (flip chip), or RDL (re-distribution 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 opposite to the upper surface of the circuit board 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 assembly 30, a recess or a through hole is formed in the middle region of the circuit board, and the photosensitive chip is mounted in the recess or the through hole to reduce the overall height of the photosensitive assembly 30.

[0083]

[0084] ​In the embodiments of the present application, the circuit board comprises a circuit board body, a connecting strip extending from the circuit board body, a connector part arranged at an 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 drawings), wherein the connecting strip connects the circuit board body and the connector part to realize electrical conduction between the circuit board body and the connector part, and the circuit board body can be a PCB hard board, a PCB soft board, a rigid-flexible combined board, a ceramic substrate, etc.

[0085] In the embodiments of the present application, the light filtering element is held on the light path of the photosensitive chip for filtering the imaging light to be entered into the photosensitive chip. In a specific example, the light filtering element is mounted on the lens seat of the photosensitive assembly 30 and corresponds to at least the photosensitive area of the photosensitive chip. In this specific example, the lens seat is implemented as a separately formed plastic support which is attached to the upper surface of the circuit board by an adhesive medium and is used to support other components.

[0086] It is worth mentioning that in other examples of the present application, the lens seat can be implemented as other types of lens seats, for example, the lens seat can be implemented as a molded lens seat which is integrally formed at a predetermined position of the upper surface of the circuit board by a molding process, of course, injection molding or other processes can also be used to integrally form the lens seat on the circuit board. For another example, the lens seat can be a combination of a plastic support and a molded base, wherein the molded base can be integrally formed on the non-photosensitive area of the photosensitive chip, and the plastic support is stacked on the molded base. It is worth mentioning that when a molded lens seat is used, the molded lens seat or the molded base can be wrapped around the electronic components arranged on the circuit board to form isolation and protection for the electronic components.

[0087] In addition, the specific implementation that the light filtering element is held on the light path of the photosensitive chip is not limited in the present application, for example, the light filtering element can be implemented as a filter film and coated on the surface of a certain optical lens of the zoom lens 20 to achieve the effect of light filtering, for another example, the photosensitive assembly 30 can further comprise a light filtering element support (not shown in the drawings) mounted on the support, wherein the light filtering element is held on the light path of the photosensitive chip in the manner of being mounted on the light filtering element support.

[0088] As mentioned earlier, to achieve optical zoom, the current approach is to first move the zoom section to a preset position using a driving element; then, another driving element moves the focusing section to achieve focus, resulting in a clear image from the optical zoom camera module. This completes the optical zoom process. However, as consumers have increasingly higher requirements for zoom accuracy, zoom speed, and the size of optical zoom camera modules, this optical zoom driving solution is gradually becoming insufficient to meet those requirements.

[0089] Accordingly, in the embodiments of this application, the zoom camera module adopts a "mother-child" driving scheme to provide driving support for zoom driving, wherein the "mother-child" driving scheme can drive the zoom camera module to achieve optical zoom and / or optical focus and other optical performance adjustments at a relatively faster speed.

[0090] Specifically, such as FIGS. 2-22 As shown, the drive assembly 40 includes: a drive housing 41, a first drive portion and a second drive portion located within the drive housing 41, wherein the first drive portion is movably disposed within the drive housing 41, and the second drive portion is movably disposed within the first drive portion. In this embodiment, the third lens portion 21 is fixedly mounted on the drive housing 41, the first lens portion 23 is adapted to be mounted on the first drive portion, and the second lens portion 22 is adapted to be mounted on the second drive portion. Thus, when the first drive portion moves relative to the drive housing 41, the second drive portion can move along with the first drive portion relative to the drive housing 41. That is, when the first drive portion is driven within the drive housing 41, the first lens portion 23 mounted on the first drive portion and the second lens portion 22 mounted on the second drive portion can be moved simultaneously.

[0091] Furthermore, the second driving part, which is 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, thereby adjusting 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.

[0092] In this embodiment of the 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 drive the second lens part 22 to move alone along the direction set by the optical axis after being turned on. For ease of explanation, this optical variable driving scheme is defined as "mother-child type", where the mother driving part is the first driving part and the child driving part is the second driving part.

[0093] like FIG. 2 As shown in this embodiment, the drive housing 41 includes an upper cover 411 and a base 412, wherein the upper cover 411 and the base 412 can be fastened together to form a receiving cavity between them. The receiving cavity is used to house the first drive part, the second drive part, the zoom lens 20 and other components therein. In this way, not only can the various components in the drive assembly 40 be protected from impact damage, but it can also be used to prevent dust, dirt or stray light from entering the interior of the drive assembly 40.

[0094] Specifically, in this embodiment, the upper cover 411 is engaged with the upper part of the base 412. In this embodiment, 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 component 40, and the fourth side is the light-emitting side of the driving component 40. The base 412 includes a first sidewall and a second sidewall formed on the first side and the second side respectively, extending upward from the bottom of the base 412 along the height direction set by the driving component 40, and a third sidewall and a fourth sidewall formed on the third side and the fourth side of the base 412 respectively, extending upward from the bottom of the base 412 along the height direction set by the driving component 40, where the height direction refers to the direction perpendicular to the plane containing the optical axis.

[0095] Specifically, in this embodiment, the third and fourth side arms form openings corresponding to the photosensitive component 30, so that light reflected from the 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.

[0096] Specifically, in the embodiment of the present application, the third lens part 21 is arranged on the third side arm of the base 412, more specifically, the third lens part 21 is mounted on the opening of the third side arm, in other words, the third lens part 21 is fixed on the driving housing 41 of the non-moving part of the driving assembly 40, that is to say, in the zoom lens 20, the position of the third lens part 21 remains constant as a fixed lens part.

[0097] More specifically, in the embodiment of the present application, the photosensitive assembly 30 is arranged on the fourth side arm of the base 412. More specifically, the photosensitive assembly 30 is arranged on the opening of the fourth side arm for receiving the imaging light from the zoom lens 20. That is, in the 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.

[0098] In the embodiment of the present application, as shown in FIG. 2 the bottom of the base 412 is provided with an opening, the opening 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 opening is a through hole. Further, the driving housing 41 further comprises a shielding piece 413, the shielding piece 413 is used to close the opening, so that the shielding piece 413 not only can block the external stray light from entering the inside of the driving assembly 40, but also can avoid dust, dirt or stray light from entering the inside of the driving assembly 40, and can 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 not only difficult to form in the manufacturing process, but also reduces its reliability. Therefore, the bottom of the base 412 is provided with an opening to facilitate its molding, and the shielding piece 413 is arranged at the opening 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 can also not be provided with an opening, that is, the bottom of the base 412 is a complete structure, and the present application does not limit this.

[0099] As shown in FIGS. 1-22As shown in this embodiment, 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 housed within the driving housing 41. The driving element 440 drives the first lens portion 23 and / or the second lens portion 22 of the zoom lens 20, adjusting the distance between the first lens portion 23 and the second lens portion 22 relative to the photosensitive assembly 30, thereby achieving optical focusing and / or optical zoom functions of the camera module. In this embodiment, the first lens portion 23 and the second lens portion 22 of the zoom lens 20 are mounted on the driving carrier 400, so that the driving element 440 drives the driving carrier 400 to move, thereby moving the first lens portion 23 and / or the second lens portion 22 of the zoom lens 20 to achieve optical focusing and / or optical zoom functions of the camera module. The pre-pressure device 49 is disposed between the drive carrier 400 and the drive housing 41, and its function is 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 guiding 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 assembly 30, so as to provide the drive element 440 with the electrical energy required for operation through the circuit board of the photosensitive assembly 30.

[0100] like FIGS. 2-5 As shown, specifically, in this embodiment of the 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 within the driving housing 41, the second carrier 43 is movably disposed within the first carrier 42, and the first lens portion 23 is installed within the first carrier 42, and the second lens portion 22 is installed within the second carrier 43.

[0101] Correspondingly, the first carrier 42 has a first mounting cavity 421 and a second mounting cavity 422, wherein the first lens part 23 is mounted in the first mounting cavity 421, and the second carrier 43 with the second lens part 22 is movably mounted in the second mounting cavity 422. The second carrier 43 has a third mounting cavity 431, and the second lens part 22 is mounted in the third mounting cavity 431. By such a structure design, the second carrier 43 can move along with the first carrier 42 relative to the driving housing 41 when the first carrier 42 is driven to move relative to the driving housing 41, so that the first carrier 42 and the second carrier 43 can simultaneously drive the first lens part 23 and the second lens part 22 to move.

[0102] Further, since the second carrier 43 is movably mounted in the second mounting cavity 422 of the first carrier 42, the second lens part 22 mounted on the second carrier 43 can move relative to the first lens part 23 mounted on the first carrier 42, so as to adjust the 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. Correspondingly, in order to ensure that the second lens part 22 has sufficient moving space relative to the first lens part 23 to meet the stroke requirement of the second lens part 22, the difference between the size of the second mounting cavity 422 and the second carrier 43 in the direction of the optical axis is greater than the stroke requirement of the second lens part 22. That is, in the embodiment of the present application, the difference between the length of the movable space of the second mounting cavity 422 in the direction of the optical axis and the size of the second carrier 43 is greater than the stroke requirement of the second lens part 22, so that the second carrier 43 and the second lens part 22 can move in the second mounting cavity 422 with full stroke.

[0103] 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 arranged oppositely, wherein the first carrier side arm 423 and the second carrier side arm 424 are arranged on the first side and the second side of the driving assembly 40, respectively. Preferably, in the embodiment of the present application, the first driving element 44 can be arranged on the first carrier side arm 423 or the second carrier side arm 424 to avoid increasing the height of the driving assembly 40. The first carrier 42 further includes a first carrier connecting part 425 extending between the first carrier side arm 423 and the second carrier side arm 424 at the bottom thereof, wherein the first carrier side arm 423, the second carrier side arm 424 and the first carrier connecting part 425 form the first mounting cavity 421 and the second mounting cavity 422 of the first carrier 42.

[0104] Specifically, in the embodiments of the present application, the second carrier 43 comprises a third carrier side arm 432 and a fourth carrier side arm 433 opposite to each other, wherein the third carrier side arm 432 and the fourth carrier side arm 433 are arranged on opposite first side and second side of the driving assembly 40, respectively. Preferably, the second driving element 45 can be arranged on the third carrier side arm 432 or the fourth carrier side arm 433 to avoid increasing the height of the driving assembly 40. Further, the second carrier 43 further comprises a second carrier connecting portion 434 extending between the third carrier side wall and the fourth carrier side wall at the bottom of the second carrier 43, wherein the third carrier side arm 432, the fourth carrier side arm 433 and the second carrier connecting portion 434 form a third mounting cavity 431 of the second carrier 43.

[0105] Specifically, in the embodiments of the present application, the length of the third carrier side arm 432 is less than the length of the first carrier side arm 423, and the length of the fourth carrier side arm 433 is less than the length of the second carrier side arm 424, so as to provide a certain moving space for the second carrier 43 in the second mounting cavity 422. Accordingly, the first carrier side arm 423 of the first carrier 42 comprises a first front segment 4231 and a first rear segment 4232, and the second carrier side arm 424 of the first carrier 42 comprises a second front segment 4241 and a second rear segment 4232, wherein the first front segment 4231 and the second front segment 4241 are close to the light-incident side (i.e., the third side) of the first carrier 42, and the first rear segment 4232 and the second rear segment 4232 are close to the light-emitting side (i.e., the fourth side) of the first carrier 42. Accordingly, in the embodiments of the present application, the height of the first front segment 4231 is higher than the height of the first rear segment 4232, and the height of the second front segment 4241 is higher than the height of the second rear segment 4232, preferably, the height of the first rear segment 4232 is the same as the height of the second rear segment 4232.

[0106] In a specific example of the present application, the third carrier side arm 432 of the second carrier 43 is arranged on the first rear segment 4232 of the first carrier side arm 423, and the fourth carrier side arm 433 of the second carrier 43 is arranged on the second rear segment 4232 of the second carrier side arm 424, so that when the second carrier 43 is arranged on the first carrier 42, the top surface of the second carrier 43 is not higher than the top surface of the first carrier 42, avoiding increasing the overall height of the driving assembly 40. At the same time, such an arrangement can also enable the second carrier 43 to move smoothly in the first carrier 42, avoiding the generation of tilt.

[0107] Furthermore, in this embodiment, anti-collision structures 430 are provided on both the light-incident and light-exit sides of the driving assembly 40. For example, in a specific example, the anti-collision structures 430 are provided on the light-exit and light-incident end faces 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 impacting the driving housing 41 during movement, thereby avoiding impact on the first lens portion 23; simultaneously, the anti-collision structures 430 are provided on the light-incident and light-exit end faces 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 impacting the first carrier 42 during movement, thereby avoiding impact on the second lens portion 22.

[0108] In this embodiment, preferably, the anti-collision structure 430 is made of a material with an elastic modulus less than that of the first carrier 42 and the second carrier 43, such as silicone. The anti-collision structure 430 can be fixed to a predetermined position on the first carrier 42 and the second carrier 43 by adhesive bonding. Of course, in other specific examples of this application, the anti-collision structure 430 can be integrally molded to the predetermined position on the first carrier 42 and the second carrier 43 by secondary injection molding. It is also worth mentioning that in this embodiment, the number of anti-collision structures 430 is two or more, and preferably, the anti-collision structures 430 are symmetrically arranged on the light-emitting side and light-receiving side of the first carrier 42 or the second carrier 43 to prevent the first carrier 42 or the second carrier 43 from tilting due to the arrangement of the anti-collision structures 430.

[0109] like FIG. 6 As shown in the embodiment of this 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 ease of explanation. 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 portion 23 and the second lens portion 22 to move along the direction set by the optical axis. The second driving element 45 is configured to drive the second carrier 43 to move along the direction set by the optical axis independently after being turned on, so as to drive the second lens portion 22 to move along the direction set by the optical axis.

[0110] Accordingly, in the embodiments of this application, the first driving element 44 and the first carrier 42 form the first driving portion, and the second driving element 45 and the second carrier 43 form the second driving portion. It should be understood that in the embodiments of this application, the first driving portion includes other components in addition to the first driving element 44 and the first carrier 42. Since the driving correlation between other components and the first driving portion is not significant, these other components are not included in the first driving portion here. Similarly, the second driving portion may also include other components in addition to the second driving element 45 and the second carrier 43. Since the driving correlation between other components and the second driving portion is not significant, these other components are not included in the second driving portion here.

[0111] In one specific example of this application, the first driving element 44 and the second driving element 45 are disposed on the same side of the driving assembly 40, for example, on the first or second side of the driving assembly 40. That is, the first driving element 44 and the second driving element 45 are concentrated on the same side of the driving assembly 40. In this way, the conductive component 50 for conducting the first driving element 44 and the second driving element 45 can also be disposed 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 this application, the first driving element 44 and the second driving element 45 can also be disposed on different sides of the driving assembly 40. For example, the first driving element 44 and the second driving element 45 are respectively disposed on the opposite first and second sides of the driving assembly 40. Such an arrangement can avoid the increase in size of the driving assembly 40 and the camera module on one side, and can prevent the first driving element 44 and the second driving element 45 from interfering with each other during the driving process.

[0112] like FIG. 6 As shown in this embodiment, the first driving element 44 is implemented as a piezoelectric actuator. This piezoelectric actuator possesses nanometer-level step-level precision, enabling it to meet the requirements of more sophisticated optical systems. Furthermore, the piezoelectric actuator is suitable for providing a large driving force, thereby satisfying 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 magnetic interference from the external environment.

[0113] Specifically, the piezoelectric actuator comprises a piezoelectric active part 441 and a friction driving part 442 fixed to the piezoelectric active part 441. The piezoelectric active part 441 is composed of very small piezoelectric ceramics, and is caused to deform by two 90° phase-shifted sinusoidal signals applied to the piezoelectric active part 441 of the first driving element 44, and is caused to resonate by high-frequency alternating voltage. The friction driving part 442 is drivingly connected to the piezoelectric active part 441, for example, is fixed to the piezoelectric active part 441, so that the piezoelectric active part 441 can drive the friction driving part 442 to drive the first carrier 42 to move by the friction driving part 442 after the first driving element 44 is turned on.

[0114] In an embodiment of the present application, the friction driving part 442 comprises at least one friction head 4421, and the first driving element 44 is in frictional contact with the first carrier 42 through the at least one friction head 4421 on the friction driving part 442. The friction driving part 442 is drivingly connected to the piezoelectric active part 441, so that the friction driving part 442 is caused to produce unidirectional deflection reciprocating motion in a preset direction (for example, the optical axis direction) under the driving of the piezoelectric active part 441 after the piezoelectric active part 441 is turned on, and the friction driving part 442 provides driving force for driving the first carrier 42 to move under the action of the piezoelectric active part 441.

[0115] In an embodiment of the present application, as shown in FIGS. 7A-7D a traveling wave signal is provided to the piezoelectric active part 441, the piezoelectric active part 441 is caused to deform under the inverse piezoelectric effect, and drives the friction driving part 442 to move in the form of a traveling wave, the deformation of the piezoelectric active part 441 is transmitted to the friction driving part 442, and the driving force for driving the first carrier 42 is provided by the traveling wave motion of the friction driving part 442. In another embodiment of the present application, the piezoelectric active part 441 is turned on by a standing wave signal, and the deformation of the piezoelectric active part 441 drives the friction driving part 442 to move in the form of a standing wave in a preset direction, which is not limited in the present application.

[0116] 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), and the friction driving part 442 of the first driving element 44 is in frictional contact with the top surface of the first carrier 42.

[0117] 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. 8As shown, the first carrier 42 further comprises a friction member 426 arranged on the top of the first carrier side arm 423 or the second carrier side arm 424, so that the friction member 426 is arranged opposite to the first driving element 44. In the embodiment of the present application, the friction member 426 can be directly arranged 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 can be arranged in a groove formed downward on the top surface of the first carrier side arm 423 or the second carrier side arm 424, so as to reduce the installation height of the first driving element 44; in another embodiment of the present application, the friction member 426 can also be integrated with the first carrier side arm 423 or the second carrier side arm 424, that is, the friction member 426 is integrally formed with the first carrier 42 by injection molding or molding process.

[0118] Further, as shown in FIG. 8 The friction member 426 is a cuboid structure, which has a friction surface arranged along the optical axis direction, that is, the friction driving part 442 of the first driving element 44 is in frictional contact with the friction surface of the friction member 426, so as to drive 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 direction is greater than or equal to the moving stroke of the first carrier 42.

[0119] More specifically, in the embodiment of the present application, one end of the friction driving part 442 of the first driving element 44 is connected to the piezoelectric driving part 441, and the other end is in frictional contact with the friction member 426 of the first carrier 42. After the piezoelectric driving part 441 of the first driving element 44 is provided with power excitation, the piezoelectric driving part 441 generates face type change in traveling wave state, so as to drive the friction driving part 442 to generate one-way deflection reciprocating motion along the optical axis direction. Since the friction driving part 442 is in frictional contact with the friction member 426, the friction member 426 and the first carrier 42 are driven to move along the optical axis direction. When one movement cycle is completed, the piezoelectric driving part 441 is lifted, and the friction driving part 442 is separated from the friction member 426. From the separation of the friction driving part 442 from the friction member 426 to the re-friction contact of the friction driving part 442 with the friction member 426, the friction driving part 442 is repositioned under the driving of the piezoelectric driving part 441 and again deflected along the optical axis direction, so as to drive the friction member 426 and the first carrier 42 to continue moving along the optical axis direction, as shown in FIGS. 7A-7D

[0120] ​It is worth mentioning that, in the embodiment of the present application, in the initial state, the friction driving part 442 can be located at the middle position of the friction member 426, and the friction member 426 can be moved along the optical axis direction towards the light-in side or the light-out side under the driving of the friction driving part 442, that is, the friction member 426 can be moved towards two directions. In another embodiment of the present application, in the initial state, the friction driving part 442 can be located at the end of the friction member 426, that is, located at one end of the friction member 426 close to the light-in side or one end of the friction member 426 close to the light-out side, and the friction member 426 can be moved along the optical axis direction towards the other side under the driving of the friction driving part 442.

[0121] As shown in FIGS. 9-11 In order to ensure that the friction head 4421 of the friction driving part 442 of the first driving element 44 can stably abut against the upper surface of the first carrier 42, the driving assembly 40 further provides a pre-pressure device 49 in the embodiment of the present application, and the pre-pressure device 49 can provide the pressure between the first driving element 44 and the first carrier 42, so that the friction driving part 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 direction by the friction driving part 442.

[0122] As shown in FIGS. 9-11 The pre-pressure device 49 has an elongated structure (that is, the pre-pressure device 49 has a relatively long length), and the first end of the pre-pressure device 49 is fixed to one side of the driving shell 41, and the second end of the pre-pressure device 49 opposite to the first end is fixed to the other side of the driving shell 41 opposite to the side, so as to provide the pre-pressure for abutting the first driving element 44 against the first carrier 42 by the pre-pressure device 49. That is, in the embodiment of the present application, the pre-pressure device 49 is arranged across the opposite two sides of the driving shell 41.

[0123] In the embodiment of the present application, the pre-pressure device 49 extends between the opposite sides of the drive housing 41 along the direction in which the optical axis is arranged (i.e., along the length direction in which the drive housing 41 is arranged), or the pre-pressure device 49 extends between the opposite sides of the drive housing 41 along the width direction in which the drive housing 41 is arranged, without being limited to this. Here, when the pre-pressure device 49 extends between the opposite sides of the drive housing 41 along the direction in which the optical axis is arranged, 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 between the opposite sides of the drive housing 41 along the width direction in which the drive housing 41 is arranged, 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.

[0124] More specifically, in the embodiment of the present application, the pre-pressure device 49 is implemented as an elastic member, which includes a first fixed part 491 and a second fixed part 492 fixed between the opposite sides of the drive housing 41, respectively, a first deformed part 493 extending from the first fixed part 491 and a second deformed part 494 extending from the second fixed part 492, and a main body part 495 extending between the first deformed part 493 and the second deformed part 494, wherein the main body part 495 is pressed against the first drive element 44 to make the first drive element 44 abut against the first carrier 42 by the pre-pressure applied to the first drive element 44 by the main body part 495. Accordingly, in the embodiment of the present application, the end of the first fixed part 491 forms the first end, and the end of the second fixed part 492 forms the second end.

[0125] 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 direction of the optical axis, the two ends of the pre-pressure device 49 are fixed to the opposite third side and fourth side of the drive housing 41, the pre-pressure device 49 is arranged above the first drive element 44 and abuts against the first drive element 44 to generate the pre-pressure along the height direction downward for the first drive element 44, at this time, the arrangement manner of the pre-pressure device 49 and the direction in which the pre-pressure is generated are perpendicular to each other.

[0126] In an embodiment of the present application, the first fixing portion 491 and the second fixing portion 492 of the pre-pressure device 49 are fixed to the third side arm and the fourth side arm of the driving housing 41 respectively, so that the pre-pressure device 49 is fixed to the opposite third side and fourth side of the driving housing 41, and the main body portion 495 is suspendedly abutted on the piezoelectric active portion 441 of the first driving element 44 through the first deformation portion 493 and the second deformation portion 494, and the main body portion 495 generates a pre-pressure downward along the height direction under the action of the first deformation portion 493 and the second deformation portion 494 to keep the main body portion 495 abutted on the piezoelectric active portion 441, so that the friction driving portion 442 of the first driving element 44 is in contact with the friction member 426 of the first carrier 42 through the pre-pressure, and the first driving element 44 is frictionally coupled to the first carrier 42. Preferably, the extension directions of the first fixing portion 491, the second fixing portion 492 and the main body portion 495 are consistent with the extension direction of the first driving element 44.

[0127] In the present application, the fixing mode of the first fixing portion 491 and the second fixing portion 492 of the pre-pressure device 49 can be adhesive fixing or riveting fixing. In other embodiments of the present application, the fixing position of the pre-pressure device 49 can also be adjusted, for example, the first fixing portion 491 and the second fixing portion 492 of the pre-pressure device 49 are fixed by clamping between the upper cover 411 and the base 412.

[0128] It is worth mentioning that the first deformation portion 493 and the second deformation portion 494 of the pre-pressure device 49 have a certain length, and the length of the first deformation portion 493 and the second deformation portion 494 affects the size of the pre-pressure generated by the pre-pressure device 49. In an embodiment of the present application, the more the first deformation portion 493 and the second deformation portion 494 are bent, the longer the length of the first deformation portion 493 and the second deformation portion 494, and the pre-pressure generated by the first deformation portion 493 and the second deformation portion 494 is relatively small; in another embodiment of the present application, the less the first deformation portion 493 and the second deformation portion 494 are bent, the shorter the length of the first deformation portion 493 and the second deformation portion 494, and the pre-pressure generated by the first deformation portion 493 and the second deformation portion 494 is relatively large. Of course, in other embodiments of the present application, the pre-pressure device 49 has a certain flatness, thereby improving the stability of the first driving element 44. It can be understood by those skilled in the art that the pre-pressure device 49 can also be an elastic adhesive such as rubber, silicone and the like.

[0129] In the embodiment of the present application, the pre-pressure device 49 is a planar structure, i.e., the first fixed part 491, the second fixed part 492 and the main body part 495 of the pre-pressure device 49 are located in the same height plane, that is, the first fixed part 491, the second fixed part 492 and the main body part 495 extend along the length direction or the width direction of the driving housing 41, instead of extending along the height direction of the driving housing 41, so as to avoid occupying the height space while ensuring that the pre-pressure device 49 can provide sufficient pre-pressure. In other embodiments of the present application, the pre-pressure device 49 can also be shaped as or, that is, the main body part 495 of the pre-pressure device 49 has a certain height difference with the fixed part, for example, the first fixed part 491 and the second fixed part 492 are located in the same height plane, and the main body part 495 is lower than the height plane where the first fixed part 491 and the second fixed part 492 are located.

[0130] As shown in FIG. 8 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, because the technology of VCM is more mature, and the feasibility and compatibility are higher, and in addition, this arrangement 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 is also implemented as a piezoelectric actuator, or a memory alloy actuator, etc.

[0131] Correspondingly, when the second driving element 45 is implemented as a voice coil motor, i.e., the second driving element 45 is implemented as an electromagnetic motor, as shown in FIG. 8 The second driving element 45 includes a driving coil 451, a driving magnet 452 and a driving magnetic guide sheet 453. In a specific example of the present application, 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 and corresponds to the driving magnet 452, so that the driving force is generated between the driving coil 451 and the driving magnet 452 after being energized, to drive the second carrier 43 to move along the optical axis direction.

[0132] It is worth mentioning that, in the embodiments of the present application, the second carrier 43 has a second receiving groove 435 recessed on the outer surface thereof, and the drive magnet 452 is mounted 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 side surface of the third carrier side arm 432 or the fourth carrier side arm 433 of the second carrier 43, and the drive magnet 452 is mounted 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 the inner surface thereof, 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 surface of the first carrier side arm 423 or the second carrier side arm 424 of the first carrier 42, and the drive coil 451 is mounted in the first receiving groove 420 and arranged opposite to the drive magnet 452. That is, the drive magnet 452 is arranged on the outer surface of the second carrier 43, the drive coil 451 is arranged on the inner surface of the first carrier 42, and the drive coil 451 corresponds to the drive magnet 452, so that the drive force is generated between the drive coil 451 and the drive magnet 452 after being energized to drive the second carrier 43 to move along the optical axis direction, thereby driving the second lens part 22 to move along the optical axis direction.

[0133] 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 penetrates the inner side surface and the 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 penetrates the inner side surface and the outer side surface of the first carrier side arm 423 or the second carrier side arm 424 of the first carrier 42.

[0134] It is worth mentioning that, in other embodiments of the present application, the positions of the drive coil 451 and the drive magnet 452 can be interchanged, that is, the drive coil 451 is arranged on the second carrier 43, and the drive magnet 452 is arranged on the first carrier 42, and accordingly, the first receiving groove 420 can be used to mount the drive magnet 452, and the second receiving groove 435 can be used to mount the drive coil 451.

[0135] In the embodiments of the present application, the driving magnetic conductive sheet 453 is arranged on the back of the driving magnet 452 facing the driving coil 451, so that the magnetic lines of the driving magnet 452 are concentrated towards the driving coil 451, thereby increasing the magnetic field intensity of the second driving element 45, and reducing the leakage of the magnetic force of the driving magnet 452, thereby avoiding affecting the photosensitive chip or the 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 in the form of a flat plate covering the back of the driving magnet 452; or the driving magnetic conductive sheet 453 is in the form of a U-shaped plate with an opening facing the anti-shake coil, the driving magnetic conductive sheet 453 covers the back of the driving magnet 452, and further, the driving magnetic conductive sheet 453 can wrap at least part of the side of the driving magnet 452. Of course, the driving magnetic conductive sheet 453 can also be arranged in other structures, which are not limited in the present application.

[0136] In order to make the movement of the first carrier 42 in the driving housing 41 more smooth and stable, and make the movement of the second carrier 43 on the first carrier 42 more smooth and stable, as shown in FIGS. 13-16 The driving assembly 40 further includes a guide component for driving the movement of the first carrier 42 and the second carrier 43. Accordingly, in the embodiments 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 movement of the first carrier 42 in the driving housing 41 along the direction set by the optical axis, and the second guide device 48 is used to guide the movement of the second carrier 43 on the first carrier 42 along the direction set by the optical axis, so that the movement of the first lens part 23 and the second lens part 22 is always along the direction set by the optical axis.

[0137] Specifically, in the embodiments of the present application, the first guide device 47 is arranged between the driving housing 41 and the first carrier 42, and the second guide device 48 is arranged between the first carrier 42 and the second carrier 43, that is, in the embodiments of the present application, the height of the second guide device 48 is higher than the height of the first guide device 47. In the embodiments of the present application, the guide directions set by the first guide device 47 and the second guide device 48 are parallel to the optical axis.

[0138] In the embodiment of the present application, the first guide device 47 comprises at least one guide element extending along the direction set by the optical axis. For example, in one specific example of the present application, the first guide device 47 comprises at least one guide element penetrating through the first carrier 42, which can be implemented as a guide rod.

[0139] 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, during the movement of the first carrier 42 relative to the drive housing 41 when the camera module is in optical zoom, the first guide device 47 always supports the first carrier 42; during the movement of the second carrier 43 relative to the first carrier 42 when the camera module is in optical focus, the second guide device 48 always supports the second carrier 43, so that the first carrier 42 and the second carrier 43 can move smoothly, improving the stability of the camera module. That is, 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.

[0140] Specifically, in the embodiment of the present application, as shown in FIGS. 12-17 The first guide device 47 comprises a first guide element 471 and a second guide element 472 arranged between the bottom surface of the first carrier 42 and the inner bottom surface of the motor housing, which extend along the direction set by the optical axis and are symmetrically distributed relative to the optical axis. In one specific example, the first guide element 471 and the second guide 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 arranged 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 with the first carrier 42, so that the first guide rod and the second guide rod of the first guide device 47 cooperate with the first drive element 44 to provide guidance for the movement of the first carrier 42.

[0141] In particular, in this specific example, the two ends of the first guide rod and the second guide rod are fixed to the third side arm and the fourth side arm of the driving housing 41 respectively, and the first guide rod and the second guide rod are arranged in opposite parallel along the optical axis direction, so that the first guide rod and the second guide rod can be stably arranged in the driving assembly 40. That is, in the embodiment of the present application, the first guide rod and the second guide rod are fixedly arranged between the opposite third side and fourth side of the driving housing 41. Preferably, the first guide rod and the second guide rod are at the same height to avoid the first carrier 42 from tilting during movement.

[0142] Specifically, in the embodiment of the present application, the first driving element 44 drives the first carrier 42 to move along the optical axis direction, the first guide rod can be used as a main guide rod to provide guidance for the movement of the first carrier 42, and the second guide rod can be used as a secondary guide rod to prevent the first carrier 42 from tilting or rotating. That is, the first guide rod and the second guide rod cooperate with each other to have the functions of guiding direction and preventing the first carrier 42 from tilting or rotating.

[0143] In particular, in the embodiment of the present application, as shown in FIGS. 12-17 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 different sides, that is, the first driving element 44 and the first guide element 471 are located on the same side of the first carrier 42, and the first driving element 44 and the second guide 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 guide element 471 and the first driving element 44 are arranged on the opposite upper and lower sides of the first carrier 42, or in other words, the first guide element 471 and the first driving element 44 are arranged separately to make full use of the empty space position of the driving assembly 40, so that the camera module structure is more compact.

[0144] Further, in some embodiments of the present application, if the internal components of the driving assembly 40 are arranged along the direction of the optical axis, that is, in the plane of the driving assembly 40 defined by the width dimension and the height dimension, the first guide rod and the first driving element 44 are arranged in alignment with each other, and the position of the action point of the first driving element 44 on the first carrier 42 is aligned with the cross-sectional center of the first guide element 471 in the height direction of the driving assembly 40. This arrangement allows the force exerted by the first driving element 44 on the first carrier 42 to be perpendicular to the first guide rod, thereby avoiding rotation of the first carrier 42 during movement, as shown in FIG. 12 The pressing force of the first driving element 44 in the present application can be generated by the first driving element 44 during driving or provided by the pre-pressing device 49, and the present application does not limit this.

[0145] In particular, in the embodiments 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 drivingly coupled to the piezoelectric active part 441. The friction driving part 442 includes at least one friction head 4421 that abuts against the top surface of the first carrier 42, and the position of the friction head 4421 abutting against the top surface of the first carrier 42 is the action point of the first driving element 44 on the first carrier 42.

[0146] Further, in the embodiments of the present application, the base 412 of the driving housing 41 is provided with a pair of first lower rails on the inner bottom surface, and the bottom surface of the first carrier 42 opposite to the first lower rails is provided with a pair of first upper rails, and 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 bottom surface of the first carrier side arm 423 and the second carrier side arm 424 of the first carrier 42 is provided with the pair of first lower rails, and the inner bottom surface of the base 412 of the driving housing 41 is provided with the pair of first upper rails.

[0147] Further, in this embodiment, the first upper track is shaped like a "︹" or a "-", and the first lower track is shaped like a "︺" or a "-". In a specific example of this application, the shape of the first upper track on one side is "︹", and the shape of the first upper track on the other side is "-". Correspondingly, the shape of the first lower track on one side is "︺", and the shape of the first lower track on the other side is "︺". The first guide rod is placed between the first upper track and the first lower track on one side, serving as a main guide rod to guide the movement of the first carrier 42; the second guide rod is placed between the first upper track and the first lower track on the other side, serving as a secondary guide rod to prevent the first carrier 42 from tilting or rotating.

[0148] It is worth mentioning that in other embodiments of this application, the first guide device 47 may also be a ball or a slider. The first guide device 47 is disposed in the receiving cavity formed by the first upper track and the first lower track to support the first carrier 42 and provide guidance for the movement of the first carrier 42. This application does not limit this.

[0149] In order to ensure that the first guiding device 47 is clamped between the first carrier 42 and the drive housing 41, specifically, in this embodiment, the first guiding element 471 and the second guiding element 472 are made of magnetic material, that is, the first guide rod and the second guide rod are made of magnetic material, such as iron, magnetically conductive stainless steel, etc. This part will be discussed in more detail later when introducing the magnetic components.

[0150] like FIGS. 12-17 As shown in the embodiment of this application, the second guiding device 48 includes a first support component 481 and a second support component 482. The first support component 481 and the second support component 482 are disposed between the bottom surface of the second carrier 43 and the top surface of the first carrier 42. The first support component 481 and the second support component 482 are movably connected to the second carrier 43. The first support component 481 and the second support component 482 are respectively disposed on opposite sides of the bottom surface of the second carrier 43 along the optical axis direction to cooperate with the second driving element 45 and provide guidance for the movement of the second carrier 43.

[0151] Specifically, in one embodiment of the present application, the first support assembly 481 is mounted 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, and the second support assembly 482 is mounted 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 arranged in opposite parallel along the optical axis direction, 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 avoid the second carrier 43 from tilting during movement.

[0152] Specifically, in one embodiment of the present application, the top surface of the first carrier side arm 423 and the second carrier side arm 424 of the first carrier 42 is provided with a pair of second upper tracks, and the bottom surface of the third carrier side arm 432 and the fourth carrier side arm 433 of the second carrier 43 is provided with a pair of second lower tracks opposite to the pair of second upper tracks, and a pair of accommodating cavities are formed between the pair of second upper tracks and the pair of second lower tracks, wherein the first support assembly 481 and the second support assembly 482 are respectively accommodated in the pair of accommodating cavities. Specifically, in one embodiment of the present application, the pair of second upper tracks are arranged 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, i.e. the height of the second guide device 48 is lower than the height of the top surface of the first carrier 42.

[0153] In an embodiment of the present application, the first support assembly 481 and the second support assembly 482 are balls, which are arranged in the accommodating cavities formed by the second upper track and the second lower track, the movement track of the track is limited in the accommodating cavities, and the balls can move along the optical axis direction in the accommodating cavities to provide guidance for the movement of the second carrier 43. Further, the number of the first support assembly 481 and the second support assembly 482 is at least one, and in an embodiment of the present application, the number of the first support assembly 481 is two, and the number of the second support assembly 482 is two, so as to provide more stable support for the second carrier 43 and avoid the inclination of the second carrier 43 during movement. Further, in some embodiments of the present application, the middle part of the second upper track and the second lower track (i.e., the middle part of the accommodating cavities) is divided, so that the accommodating cavities on one side form two half-accommodating cavities, and the accommodating cavities on the other side also form two half-accommodating cavities, which makes the two balls arranged on the same side be arranged in the two half-accommodating cavities respectively, so as to prevent the balls from being concentrated on the same side during movement and causing the inclination of the second carrier 43.

[0154] Similarly, in the embodiments 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 function, and the present application is not limited thereto.

[0155] In order to make the guidance of the first guide device 47 and the second guide device 48 more stable, that is, in order to make the first guide device 47 be stably clamped between the first carrier 42 and the driving housing 41 and make the second guide device 48 be stably clamped between the second carrier 43 and the first carrier 42, that is, in order to make the first carrier 42, the first guide device 47 and the second carrier 43 have a stable and compact relative positional relationship, and make the second carrier 43, the first carrier 42 and the second guide device 48 have a stable and compact relative positional relationship, in the embodiments of the present application, as shown in FIGS. 18-20 More specifically, the magnetic attraction component includes a first magnetic attraction member 511 and a second magnetic attraction member 512.

[0156] As shown in FIGS. 18-20As shown, in the embodiment of the present application, the first magnetic attraction member 511 comprises 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, and the interaction force between the first magnet 5112 and the first magnetic attraction element 5111 enables the second guide device 48 to be stably clamped between the first carrier 42 and the second carrier 43, i.e., enables the second carrier 43 and the first carrier 42 to maintain a relatively stable positional relationship.

[0157] 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, and 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, i.e., the first magnet 5112 is arranged as a partition in the middle of the second lower track, and two balls are arranged in the two half-cavity separated by the first magnet 5112, i.e., the two balls are arranged on both sides of the first magnet 5112 to prevent the balls from concentrating on the same side when moving, causing the second carrier 43 to tilt.

[0158] Preferably, in order to avoid the increase in height, in this specific example, a first groove is arranged in the middle of the second lower track, and the first magnet 5112 is arranged in the first groove, i.e., the first magnet 5112 is completely contained in the first groove, or at least partially exposed from the first groove, and the height of the first magnet 5112 exposed from the first groove is less than the height of the ball, so as to avoid affecting the movement of the second carrier 43.

[0159] In the embodiment of the present application, the first magnetic attraction element 5111 is arranged on the first carrier 42 corresponding to the first magnet 5112, and the first magnetic attraction element 5111 and the first magnet 5112 attract each other, enabling the second carrier 43 and the first carrier 42 to be 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 attraction 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.

[0160] In a specific example of the present application, the first magnetic attraction element 5111 is embedded in the first carrier 42 by insert injection molding process to avoid increasing the height of the first carrier 42, and the first magnetic attraction element 5111 can be set to a larger size without occupying the space position of the drive assembly 40, thereby meeting the demand for greater magnetic attraction force. In other examples of the present application, of course, the first magnetic attraction element 5111 can also be formed on the lower surface of the first carrier 42 by a two-shot injection molding process, which is not limited in the present application. The number of the first magnetic attraction element 5111 is two, which are respectively arranged on the opposite sides of the first carrier 42 and the second carrier 43.

[0161] As shown in the drawings, FIGS. 18-20 In an embodiment of the present application, the second magnetic attraction member 512 includes a second magnet 5121 arranged on the first carrier 42, and the second magnet 5121 and the first guide device 47 are attracted to each other to press the first carrier 42 and the drive housing 41 tightly, thereby maintaining the relative stable positional relationship 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 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 an 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 attraction member 512 and the first guide device 47.

[0162] As described above, 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 is made of magnetic material, so that the first guide device 47 can generate magnetic attraction force with the second magnetic attraction member 512 to press the first carrier 42 and the drive housing 41 tightly, thereby maintaining the relative stable positional relationship 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 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 an embodiment of the present application, the first guide device 47 not only plays a role in guiding the movement of the first carrier 42, but also plays a role in self-positioning in cooperation with the second magnetic attraction member 512.

[0163] In one embodiment of the present application, the bottom surface of the first carrier 42 is provided with a second recess, and the second magnet 5121 is disposed in the second recess. The second recess can be completely accommodated in the second recess, or at least a portion of the second recess is exposed. The portion of the second recess exposed by the second magnet 5121 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 recess, or can be held in the second recess by the magnetic force between the first magnetic attraction element 5111 of the first magnetic attraction member 511. In another embodiment of the present application, the second magnet 5121 is embedded in the first carrier 42 by insert molding process.

[0164] In particular, corresponding to the first guide element 471 and the second guide element 472 of the first guide device 47, in the embodiment of the present application, the second magnetic attraction member 512 includes a pair of second magnets 5121, wherein one of the second magnets 5121 is mounted on the first carrier 42 and corresponds to the first guide element 471, and the other second magnet 5121 is mounted on the second carrier 43 and corresponds to the second guide element 472. The first guide element 471 and the second guide element 472 are made of magnetic material to cooperate with the second magnet 5121 respectively to generate the magnetic attraction force. Specifically, the pair of second magnets 5121 are respectively disposed on the bottom surface 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 guide direction of the first guide device 47.

[0165] As FIGS. 18-20As shown, one of the second magnets 5121 and the other of the second magnets 5121 are symmetrically arranged relative to the optical axis on the first carrier 42. More preferably, in the embodiment of the present application, the center of the one of the second magnets 5121, the center of the other of the second magnets 5121 and the gravity center 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 of the second magnets 5121, the center of the other of the second magnets 5121 and the gravity center of the first carrier 42 can also not be on the same horizontal line, for example, the two second magnets 5121 can respectively deviate from the horizontal line on which the gravity center of the first carrier 42 is located in opposite directions, that is, the line connecting the center points of the two second magnets 5121 is compared with the horizontal line on which the gravity center of the first carrier 42 is located, wherein one of the second magnets 5121 is close to the third side and the other of the second magnets 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.

[0166] More preferably, the center of the one of the second magnets 5121, the center of the other of the second magnets 5121 and the gravity center of the first carrier 42 have the same height relative to the inner bottom surface of the drive housing 41.

[0167] It is worth mentioning that in the embodiment of the present application, the first magnetic element 5111 is arranged between the first magnet 5112 and the second magnet 5121, and the size of the first magnetic element 5111 is larger than the size of the first magnet 5112 and also larger than the size of the second magnet 5121. The magnetic attraction force between the first magnetic element 5111 and the first magnet 5112 causes the second carrier 43 and the first carrier 42 to be pressed against each other, and the magnetic attraction force between the first magnetic element 5111 and the second magnet 5121 causes the second magnet 5121 to be fixed on the first carrier 42. Due to the limitation of the internal space of the drive assembly 40, the first magnet 5112 and the second magnet 5121 cannot increase the magnetic attraction force by increasing the size of the first magnet 5112 and the second magnet 5121. The size of the first magnetic element 5111 is larger, which can increase the mutual attraction force between the first magnetic element 5111 and the first magnet 5112 and between the first magnetic element 5111 and the second magnet 5121.

[0168] As FIGS. 18-20As shown in this embodiment, the first magnet 5112, the first magnetic attraction element 5111, and the second magnet 5121 are stacked along the height direction. The first magnetic attraction element 5111 can isolate the magnetic field between the first magnet 5112 and the second magnet 5121 to avoid magnetic interference between them. Specifically, the first magnetic attraction element 5111 is located between the first magnet 5112 and the second magnet 5121 in the height direction set by the driving assembly 40.

[0169] Specifically, in this embodiment, 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 downwards. When 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.

[0170] like FIG. 21 As shown in the embodiment of this application, the driving component 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.

[0171] In this embodiment, the first position sensing device 461 is disposed between the first carrier 42 and the drive housing 41, for sensing the position of the first carrier 42. Further, the first position sensing device 461 is disposed between the sidewall of the first carrier 42 and the drive housing 41 to avoid increasing the height of the drive assembly 40. In other embodiments of this application, the first position sensing device 461 may also be disposed between the bottom or top of the first carrier 42 and the drive housing 41.

[0172] Specifically, in the embodiment of the present application, the first position sensing device 461 comprises 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 arranged on the outer side wall of the first carrier 42, and the first position sensing element 4610 is arranged on the inner side wall of the drive shell 41 opposite to the first position sensing magnet 4611. Further, a third groove is arranged on the outer side 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 arranged in the third groove. A first through hole is arranged on the inner side of the first side arm or the second side arm of the drive shell 41, and the first through hole extends from the inner side of the first side arm or the second side arm of the drive shell 41 to the outer side 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, i.e., 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 moving position of the first position sensing magnet 4611, and of course, the sensed position information can be fed back and processed after sensing the position movement of the first position sensing magnet 4611. In a specific example of the present application, the first position sensing magnet 4611 is a magnetic grid.

[0173] In the embodiment of the present application, the second position sensing device 462 is arranged between the second carrier 43 and the first carrier 42, and is used for sensing the position of the second carrier 43. Further, the second position sensing device 462 is arranged between the side walls of the second carrier 43 and the first carrier 42, so as to avoid the increase of the height of the drive assembly 40. In other embodiments of the present application, the second position sensing device 462 can also be arranged between the bottom or the top of the first carrier 42 and the second carrier 43.

[0174] Specifically, in the embodiment of the present application, the second position sensing device 462 comprises a second position sensing element 4620. In a specific example of the present application, the second position sensing element 4620 is arranged in the first receiving groove 420 of the first carrier 42, and is arranged opposite to the drive magnet 452, so as to sense the moving position of the drive magnet 452, and of course, the sensed position information can be fed back and processed after sensing the position movement of the drive magnet 452. In a specific example of the present application, the second position sensing element 4620 is arranged in the drive coil 451 and corresponds to the drive magnet 452.

[0175] More specifically, in this embodiment of the application, the first position sensing element 4610 and the second position sensing element 4620 are Hall elements; in other embodiments of the application, the first position sensing element 4610 and the second position sensing element 4620 are driving chips, which are adapted to control the corresponding current while acquiring the position changes of the first position sensing magnet 4611 and the driving magnet 452.

[0176] like FIG. 21 and FIG. 22 As shown in the embodiment of this application, the driving 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 previously mentioned, the first position sensing element 4610 is disposed in the first through hole of the driving 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 of the first or second side arm of the driving housing 41 corresponding to the first through hole, that is, the first conductive element 610 and the first position sensing element 4610 are disposed on the same side. This arrangement allows the first position sensing element 4610 to be disposed on the first conductive element 610, so as to realize the circuit conduction of the first position sensing element 4610. In a specific example of this application, the first conductive element 610 is a first circuit board 501, and more specifically, the first circuit board 501 is preferably a flexible circuit board.

[0177] In this embodiment, the second conductive element 620 is disposed on the outer side of the first carrier side arm 423 or the outer side of the second carrier side arm 424 of the first carrier 42. The second conductive element 620 corresponds to the first receiving groove 420 of the first carrier 42, meaning the second conductive element 620 is disposed on the same side as the driving coil 451. The driving coil 451 is directly electrically connected to the second conductive element 620 to simplify the circuit conduction of the second driving element 45. In a specific example of this 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.

[0178] In the embodiments of the present application, the third conductive element 630 comprises a third circuit board 503 and a fourth circuit board 504, wherein the third circuit board 503 and the fourth circuit board 504 are disposed on the same side of the first driving element 44 to simplify the circuit conduction of the first driving element 44. Further, in the embodiments of the present application, the third circuit board 503 comprises a first electric connection end 5031 and a second electric connection end 5032, the first electric connection end 5031 of the third circuit board 503 is fixedly disposed on the first driving element 44 and electrically connected with the piezoelectric active part 441 of the first driving element 44, the second electric connection end 5032 of the third circuit board 503 extends to the outer side of the driving housing 41 and is adapted to be electrically connected with the light-sensing assembly 30, and the first electric connection end 5031 and the second electric connection end 5032 of the third circuit board 503 are connected through a first bending part 5033. More specifically, in the embodiments of the present application, the second electric connection end 5032 of the third circuit board 503 is fixed on the outer side of the first side arm or the second side arm of the driving housing 41, and the second electric connection end 5032 can extend towards the fourth side of the driving housing 41, i.e. extend towards the circuit board of the light-sensing assembly 30 and be electrically connected with the circuit board of the light-sensing assembly 30. Further, a reinforcing plate can be disposed on the second electric connection end 5032 of the third circuit board 503 to increase the hardness of the second electric connection end 5032.

[0179] Specifically, in the embodiments of the present application, the fourth circuit board 504 comprises a first section 5043 with a third electric connection end 5041 and a second section 5044 with a fourth electric connection end 5042, wherein the first section 5043 is fixed on the first carrier 42, the second section 5044 is fixed on the driving housing 41, and at least a part of the first section 5043 and the second section 5044 overlap in the height direction of the driving assembly 40. Further, as shown in the drawings, in the embodiments of the present application, the fourth circuit board 504 further comprises a second bending part 5045 which extends between the first section 5043 and the second section 5044. FIG. 22

[0180] ​In one specific example of the present application, the third electrical connecting end 5041 is fixed on the first carrier 42 and electrically connected to the second circuit board 502, and the fourth electrical connecting end 5042 is fixed on the driving 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 on the top surface of the first carrier 42, and the second section 5044 of the fourth circuit board 504 is fixed on the inner bottom surface of the driving housing 41. That is, in this specific example, the fourth circuit board 504 is arranged 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 through the fourth circuit board 504.

[0181] Further, in this specific example, the bottom of the third side arm or the fourth side arm of the driving housing 41 has a second through hole, and the terminal of the fourth electrical connecting end 5042 is electrically connected to the third circuit board 503 through the second through hole.

[0182] In particular, in the embodiment of the present application, the first section 5043 and the second section 5044 are parallel to each other, and the extending directions of the first section 5043 and the second section 5044 are consistent with the direction of 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 bending part 5045 have a U-shaped structure.

[0183] In order to illustrate the specific extending manner of the first section 5043, the second section 5044 and the second bending part 5045, in the embodiment of the present application, the first carrier 42 is divided into a first part and a second part according to the positions of the first mounting cavity 421 and the second mounting cavity 422, wherein the first mounting cavity 421 is located in the first part, and the second mounting cavity 422 is located in the second part. Accordingly, in the embodiment of the present application, the first section 5043 of the fourth electrical connecting board extends from the third electrical connecting end 5041 from the second part of the first carrier 42 to the first part thereof, the second section 5044 of the fourth electrical connecting board extends from the first part of the first carrier 42 to the second part thereof, and the second bending part 5045 extends between the first section 5043 and the second section 5044. That is, in the 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 bending part 5045 corresponds to the photosensitive assembly 30.

[0184] In order to meet the stroke requirement of the first carrier 42, in the embodiment of the present application, the sum of the lengths of the first segment 5043 and the second segment 5044 is greater than the stroke requirement of the first carrier 42, so that when the first driving element 44 drives the first carrier 42 to move in the set direction along the optical axis relative to the driving housing 41, the shape of the bending part 5045 remains unchanged, and the length of the first straight segment changes is equal to the length of the second straight segment changes.

[0185] Correspondingly, when the first carrier 42 moves towards the third side (i.e. towards the light folding element 10) along the optical axis direction, the first carrier 42 drives the third electrical connection end 5041 to move, and the fourth electrical connection end 5042 is fixed on the driving housing 41 and does not move, so that the length of the first segment 5043 decreases and the length of the second segment 5044 increases while keeping the U-shaped structure of the bending part unchanged. Correspondingly, when the first carrier 42 moves towards the third side (i.e. towards the photosensitive assembly 30) along the optical axis direction, the first carrier 42 drives the third electrical connection end 5041 to move, and the fourth electrical connection end 5042 is fixed on the driving housing 41 and does not move, so that the length of the first segment 5043 increases and the length of the second segment 5044 decreases while keeping the U-shaped structure of the bending part unchanged.

[0186] In summary, the variable focal length camera module based on the embodiment of the present application is illustrated, which adopts a "sub-mother type" driving scheme to provide support for zoom driving in terms of structure, and utilizes an optimized driving control scheme to enable the variable focal length camera module to perform optical zoom at a relatively fast rate.

Claims

1. A driving component, characterized in that, include: Drive housing; A first carrier housed within the drive housing, wherein the first carrier has a first mounting cavity adapted to mount a first lens portion therein, the first lens portion having an optical axis; the first carrier includes a first portion and a second portion adjacent to each other along a direction defined by the optical axis, the first mounting cavity being located in the first portion, and the first carrier further having a second mounting cavity located in the second portion. A second carrier that is movably installed within the second mounting cavity; A first driving element for driving the first carrier to move within the driving housing along the direction set by the optical axis; A second driving element for driving the second carrier to move relative to the first carrier along a direction set by the optical axis; and A conductive component includes a third circuit board and a fourth circuit board, wherein the third circuit board includes a first electrical connection terminal and a second electrical connection terminal opposite to the first electrical connection terminal, and the first electrical connection terminal is electrically connected to the first driving element; and The fourth circuit board includes a first segment having a third electrical connection terminal and a second segment having a fourth electrical connection terminal. The first segment is fixed to the first carrier, and the second segment is fixed to the drive housing. At least a portion of the first segment and the second segment overlap in the height direction set by the drive assembly.

2. The driving component according to claim 1, wherein, The fourth circuit board also includes a second bend that extends flexed between the first segment and the second segment.

3. The driving component according to claim 2, wherein, The first segment of the fourth circuit board is fixed to the top surface of the first carrier, and the second segment of the fourth circuit board is fixed to the inner bottom surface of the drive housing.

4. The driving component according to claim 3, wherein, The first segment of the fourth circuit board is fixed to the first carrier by means of its third electrical connection end being fixed to the top surface of the first carrier, and the second segment of the fourth circuit board is fixed to the drive housing by means of its second electrical connection end being fixed to the inner bottom surface of the drive housing.

5. The driving component according to claim 4, wherein, The first segment and the second segment are parallel to each other.

6. The driving component according to claim 5, wherein, The extension directions of the first segment and the second segment are consistent with the direction set by the optical axis.

7. The driving component according to claim 6, wherein, The first segment of the fourth circuit board extends from the third electrical connection terminal from the second part of the first carrier to its first part, the second segment of the fourth circuit board extends from the first part of the first carrier to its second part, and the second bent portion extends bently between the first segment and the second segment.

8. The driving component according to claim 7, wherein, The first segment, the second segment, and the second bend have a U-shaped structure.

9. The driving component according to claim 8, wherein, The sum of the lengths of the first segment and the second segment is greater than the travel requirement of the first carrier.

10. The driving component according to claim 9, wherein, When the first driving element drives the first carrier to move relative to the driving housing along the direction set by the optical axis, the length of the first segment change is equal to the length of the second segment change.

11. The driving component according to claim 8, wherein, The second electrical connection terminal of the third circuit board extends to the outer side of the drive housing and is adapted to be electrically connected to the photosensitive component. The third circuit board further includes a first bent portion extending between the first electrical connection terminal and the second electrical connection terminal. The fourth electrical connection terminal of the fourth circuit board is electrically connected to the third circuit board.

12. The driving component according to claim 11, wherein, The conductive component further includes a second circuit board disposed in the second part, one end of the second circuit board being electrically connected to the second driving element, and the other end of the second circuit board being electrically connected to the third electrical connection terminal of the fourth circuit board.

13. The driving component according to claim 12, wherein, The second circuit board is disposed on the outer surface of the second carrier, or the second circuit board is disposed on the inner side of the second part of the first carrier.

14. A variable-focus camera module, characterized in that, include: The drive component as described in any one of claims 1 to 13; The third lens portion is fixedly mounted on the light-incident side of the drive housing; The first lens portion is mounted within the first carrier of the drive assembly; The second lens portion is installed within the second carrier of the drive assembly; as well as A photosensitive component is disposed on the light-emitting side of the drive housing.

15. The variable zoom camera module according to claim 14, further comprising: A light-reversing element for reversing imaging light rays, wherein the third lens portion, the second lens portion, and the first lens portion are held on the light-reversing path of the light-reversing element.

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