Driving assembly for driving lens and camera module

Abstract

The application provides a driving assembly for driving a lens and a camera module. The driving assembly comprises a first carrier and a second carrier, which are used for carrying at least one adjustable group of the lens respectively; a first friction plate is arranged between a carrier main body of the first carrier and a first driving element, one end of the first friction plate is fixedly connected with the carrier main body of the first carrier, and the other end is actionally connected with the first driving element; a second friction plate is arranged between a carrier main body of the second carrier and a second driving element, one end of the second friction plate is fixedly connected with the carrier main body of the second carrier, and the other end is actionally connected with the second driving element, wherein the first driving element and the second driving element are centrosymmetric in the axial view. The application realizes simple design, standardized structure and more compact structure of the driving assembly and the camera module, and can provide stable, reliable and large enough driving force.

Description

TECHNICAL FIELD

[0001] The present application relates to a driving assembly for driving a lens and a camera module. BACKGROUND

[0002] The description herein merely provides background information related to the present application and does not necessarily constitute the prior art.

[0003] With the improvement of living standards, consumers have higher and higher requirements for the camera function of terminal devices such as mobile phones and tablets. Not only do they require effects such as background blurring and night shooting, but they also demand telephoto. Consumers need terminal devices that can clearly capture the picture of a distant scene at different distances.

[0004] To achieve the above-mentioned telephoto function, an optical zoom lens is usually added to the camera module to form an optical zoom module. The optical zoom module changes the focal length of the lens by changing the distance between the lenses of the optical zoom lens to achieve zooming. It can clearly capture objects at different distances, and the imaging quality of the image it produces is relatively high. Here, zooming refers to changing the focal length to capture scenes at different distances.

[0005] However, due to the increasing demands of consumers, the parameters of the optical zoom module are constantly increasing, the size and weight of the lenses are constantly increasing, and the thrust required to drive the movement of the lenses is also increasing, thus the volume of the motor is also increasing. Moreover, the existing electromagnetic motor solution has a short stroke, a large volume, and electromagnetic interference, making it difficult to meet the needs of optical zoom for lens movement.

[0006] To achieve the telephoto function, an optical zoom lens is usually added to the camera module to form an optical zoom module. The optical zoom module changes the focal length of the lens by changing the distance between the lenses of the optical zoom lens to achieve zooming. It can clearly capture objects at different distances, and the imaging quality of the image it produces is relatively high. Here, zooming refers to changing the focal length to capture scenes at different distances.

[0007] The existing driving motor for driving the optical zoom camera module adopts a voice coil motor (VCM), a shape memory alloy driver (SMA), etc. With the increasing requirement for the imaging performance of the camera module, higher requirements are put forward for each component of the camera module, especially the zoom component. With the decrease of the limitation of the size increase, in order to realize stronger functions, the design of the components of the camera module also brings the increase of the size of the components, thereby further increasing the weight of the components. In this case, the traditional electromagnetic motor can no longer provide sufficient driving force. For example, the existing voice coil motor driver can only drive an optical lens with a weight less than 100 mg, and the memory alloy motor needs a larger stroke space setting. That is, if the weight of the component to be driven in the camera module exceeds 100 mg, the existing driver will not meet the application requirements of the camera module or need to increase the size of the driver very much to provide a larger thrust. Therefore, a new generation of driving scheme must be developed for the camera module. SUMMARY

[0008] An object of the present application is to provide a driving assembly for driving a lens and a camera module, wherein the relevant parts of the driving assembly are arranged in a central symmetry along an axis, thereby ensuring that the driving assembly and the camera module are simple in design, standardized in structure and more compact, and can provide stable, reliable and sufficient driving force.

[0009] An object of the present application is to provide a driving assembly for driving a lens and a camera module, wherein the driving elements for providing driving force to the driving carrier are reasonably configured and arranged, so that the first driving element and the second driving element are in a central symmetry along an axis, thereby the first driving element and the second driving element can be configured as standard parts with the same structure, thereby reducing the manufacturing cost and simplifying the assembly process.

[0010] An object of the present application is to provide a driving assembly for driving a lens and a camera module, wherein the friction mechanisms are reasonably configured and arranged, so that the first friction mechanism and the second friction mechanism are in a central symmetry along an axis, thereby the first friction mechanism and the second friction mechanism can be configured as standard parts with the same structure, thereby reducing the manufacturing cost and simplifying the assembly process.

[0011] An object of the present application is to provide a driving assembly for driving a lens and a camera module, wherein the friction plates, the driving elements and the optional friction mechanisms are reasonably configured and arranged, so that the structural units formed thereby can be configured as standard parts with the same structure, so that the structural design of the driving assembly and the camera module is simpler, and the manufacturing cost is reduced and the assembly process is simplified.

[0012] An object of the present application is to provide a driving assembly for driving a lens and a camera module, wherein the module structure design using the driving assembly and the camera module not only simplifies the module structure, reduces the module volume and weight, but also provides a larger lens moving stroke and thrust.

[0013] In order to achieve the above object, according to a first aspect of the present application, a driving assembly for driving a lens is provided, comprising:

[0014] The driving assembly for driving a lens comprises:

[0015] a driving carrier comprising a first carrier and a second carrier, which are respectively used for carrying at least one adjustable group of the lens, wherein the first carrier and the second carrier are arranged in sequence on a same axis along an adjustment direction and can move along the adjustment direction independently of each other;

[0016] a first driving element;

[0017] a first friction plate arranged between a carrier main body of the first carrier and the first driving element, wherein one end of the first friction plate is fixedly connected with the carrier main body of the first carrier, and the other end is actionally connected with the first driving element;

[0018] a second driving element;

[0019] a second friction plate arranged between a carrier main body of the second carrier and the second driving element, wherein one end of the second friction plate is fixedly connected with the carrier main body of the second carrier, and the other end is actionally connected with the second driving element;

[0020] wherein the first driving element and the second driving element are centrosymmetric along the axis.

[0021] According to some embodiments of the first aspect of the present application, the first driving element and the second driving element are configured as standard parts of the same structure.

[0022] According to some embodiments of the first aspect of the present application, the driving assembly further comprises a first pre-pressure device arranged to provide a pre-pressure to the first driving element, so that the first driving element maintains frictional contact with the first friction plate under the action of the pre-pressure, and

[0023] the driving assembly further comprises a second pre-pressure device arranged to provide a pre-pressure to the second driving element, so that the second driving element maintains frictional contact with the second friction plate under the action of the pre-pressure.

[0024] According to some embodiments of the first aspect of the present application, a first friction mechanism is arranged between the first pre-pressure device and the first friction plate, so that the first friction plate and the first pre-pressure device are movably connected through the first friction mechanism, and

[0025] A second friction mechanism is arranged between the second pre-pressure device and the second friction plate, such that the second friction plate and the second pre-pressure device are movably connected via the second friction mechanism.

[0026] According to some embodiments of the first aspect of the present application, a first drive element is arranged on one side of the first friction plate, and a first friction mechanism is arranged on the opposite side of the first friction plate, such that the first friction plate is clamped between the first drive element and the first friction mechanism, and the first friction plate is movable in the adjustment direction under the driving action of the first drive element, and

[0027] A second drive element is arranged on one side of the second friction plate, and a second friction mechanism is arranged on the opposite side of the second friction plate, such that the second friction plate is clamped between the second drive element and the second friction mechanism, and the second friction plate is movable in the adjustment direction under the driving action of the second drive element,

[0028] wherein the first friction mechanism and the second friction mechanism are centrosymmetrically arranged along the axis.

[0029] According to some embodiments of the first aspect of the present application, the first friction mechanism and the second friction mechanism are configured as standard parts of the same structure.

[0030] According to some embodiments of the first aspect of the present application, a first structural unit formed by the first drive element and the first friction mechanism and a second structural unit formed by the second drive element and the second friction mechanism are configured as standard parts of the same structure, and are centrosymmetrically arranged along the axis.

[0031] According to some embodiments of the first aspect of the present application, the first friction mechanism comprises a groove or a roller track configured on the first pre-pressure device and / or the first friction plate, and a ball or a slider arranged in the groove or the roller track, and

[0032] the second friction mechanism comprises a groove or a roller track configured on the second pre-pressure device and / or the second friction plate, and a ball or a slider arranged in the groove or the roller track.

[0033] According to some embodiments of the first aspect of the present application, the first pre-pressure device and the second pre-pressure device respectively comprise an upper clamping portion, a lower clamping portion, and a connecting portion connecting the upper clamping portion and the lower clamping portion,

[0034] wherein the first pre-pressure device elastically clamps the first friction plate and the first drive element and the first friction mechanism arranged on both sides of the first friction plate between the upper clamping portion and the lower clamping portion of the first pre-pressure device, and

[0035] The second pre-pressure device elastically clamps the second friction plate, the second driving element and the second friction mechanism arranged on both sides of the second friction plate between the upper clamp and the lower clamp of the second pre-pressure device.

[0036] According to some embodiments of the first aspect of this application, a first driving element is respectively provided on two opposite sides of the first friction plate, such that the first friction plate is clamped between the two first driving elements and can move along the adjustment direction under the cooperative driving action of the two first driving elements.

[0037] A second driving element is respectively arranged on two opposite sides of the second friction plate, so that the second friction plate is clamped between the two second driving elements and can move along the adjustment direction under the cooperative driving action of the two second driving elements.

[0038] The two first drive elements and the two second drive elements are centrally symmetrical when viewed along the axis.

[0039] According to some embodiments of the first aspect of this application, the first pre-pressure device and the second pre-pressure device respectively include an upper clamping portion, a lower clamping portion, and a connecting portion connecting the upper clamping portion and the lower clamping portion.

[0040] The first pre-pressure device elastically clamps the first friction plate and the first driving element arranged on both sides of the first friction plate between the upper and lower clamping parts of the first pre-pressure device, and

[0041] The second preload device elastically clamps the second friction plate and the second drive element arranged on both sides of the second friction plate between the upper and lower clamps of the second preload device.

[0042] According to some embodiments of the first aspect of this application, the first driving element and the second driving element are configured as piezoelectric actuators, each including a piezoelectric plate and a friction driving part fixed on the piezoelectric plate, wherein the friction driving part of the first driving element is operatively connected to the first friction plate, thereby driving the first friction plate to move along the adjustment direction, and the friction driving part of the second driving element is operatively connected to the second friction plate, thereby driving the second friction plate to move along the adjustment direction.

[0043] According to some embodiments of the first aspect of this application, the drive assembly further includes a guide device for guiding the first carrier and the second carrier to move along the adjustment direction, wherein the guide device includes at least one guide rod passing through the first carrier and the second carrier parallel to the adjustment direction, thereby enabling the first carrier and the second carrier to move along the guide device.

[0044] According to some embodiments of the first aspect of this application, the first carrier includes a first connecting end extending outward from the carrier body of the first carrier and a second connecting end extending outward from the carrier body of the first carrier, wherein the first connecting end and the second connecting end are respectively located on opposite sides of the carrier body of the first carrier, wherein the first connecting end of the first carrier has a first connecting hole, and the second connecting end of the first carrier has a second connecting hole.

[0045] The second carrier further includes a first connecting end extending outward from the carrier body of the second carrier and a second connecting end extending outward from the carrier body of the second carrier, wherein the first connecting end and the second connecting end are respectively located on opposite sides of the carrier body of the second carrier, wherein the first connecting end of the second carrier has a first connecting hole, and the second connecting end of the second carrier has a second connecting hole.

[0046] The guiding device includes a first guide rod and a second guide rod, wherein the first guide rod passes through a second connecting hole at the second connecting end of the first carrier and a first connecting hole at the first connecting end of the second carrier, and the second guide rod passes through a first connecting hole at the first connecting end of the first carrier and a second connecting hole at the second connecting end of the second carrier, so that the first carrier and the second carrier can move independently along the first guide rod and the second guide rod of the guiding device under the drive of the first driving element and the second driving element, respectively, wherein the first guide rod and the second guide rod are arranged parallel to each other along the adjustment direction.

[0047] According to some embodiments of the first aspect of this application, the first guide rod and the second guide rod of the guiding device have a height difference.

[0048] According to some embodiments of the first aspect of this application, the second connecting end of the first carrier has a mounting groove, the first friction plate is embedded in the mounting groove of the second connecting end and fixedly connected to the carrier body of the first carrier, and the second connecting end of the second carrier has a mounting groove, the second friction plate is embedded in the mounting groove of the second connecting end and fixedly connected to the carrier body of the second carrier.

[0049] According to some embodiments of the first aspect of this application, a first driving substrate is disposed between a first pre-pressure device and a first driving element. The first driving substrate is electrically connected to the first driving element and is used to supply current to the first driving element. The first driving substrate is clamped onto the first driving element by the first pre-pressure device.

[0050] A second driving substrate is disposed between the second pre-pressure device and the second driving element. The second driving substrate is electrically connected to the second driving element and is used to supply current to the second driving element. The second driving substrate is clamped onto the second driving element by the second pre-pressure device.

[0051] The first driving substrate and the second driving substrate are centrally symmetrical when viewed along the axis.

[0052] According to some embodiments of the first aspect of this application, the first driving substrate includes a first conductive end, a second conductive end, and a connecting strip connecting the first conductive end and the second conductive end, wherein the first conductive end of the first driving substrate is clamped on a corresponding driving element by the upper clamp of the first pre-pressure device, and the second conductive end of the first driving substrate is clamped on a corresponding driving element by the lower clamp of the first pre-pressure device.

[0053] The second driving substrate includes a third conductive end, a fourth conductive end, and a connecting strip connecting the third conductive end and the fourth conductive end. The third conductive end of the second driving substrate is clamped on the corresponding driving element by the lower clamp of the second pre-pressure device, and the fourth conductive end of the second driving substrate is clamped on the corresponding driving element by the upper clamp of the second pre-pressure device.

[0054] According to some embodiments of the first aspect of this application, the driving assembly further includes a first support mechanism and a second support mechanism, each having a plurality of positioning posts forming a placement space. A first driving element is disposed in the placement space of the first support mechanism under the clamping of a first pre-pressure device, and a first conductive end and a second conductive end of the first driving substrate are respectively fixed outside the placement space of the first support mechanism onto the positioning posts of the first support mechanism.

[0055] The second driving element is disposed in the placement space of the second bearing mechanism under the clamping of the second pre-pressure device, and the third conductive end and the fourth conductive end of the second driving substrate are respectively fixed on the positioning post of the second bearing mechanism outside the placement space of the second bearing mechanism.

[0056] According to some embodiments of the first aspect of this application, the first bearing mechanism and the second bearing mechanism further have bearing connection portions, the bearing connection portions being fixedly connected to the drive housing, wherein the drive housing includes an upper housing and a lower housing connected to the upper housing to form a closed structure.

[0057] According to a second aspect of this application, a camera module is proposed, comprising:

[0058] The drive assembly for driving the lens as described above;

[0059] A photosensitive component is used to receive light signals and convert the received light signals into image signals;

[0060] A lens assembly, comprising a fixed group and an adjustable group, wherein the drive element of the drive assembly is configured to drive the adjustable group of the lens assembly.

[0061] According to some embodiments of the second aspect of this application, the adjustable group of the lens group includes a zoom group and a focus group, wherein the first carrier of the drive component is used to carry the first carrier of the zoom group, and the second carrier of the drive component is used to carry the focus group, wherein the first carrier and the second carrier can be driven separately by the first drive element and the second drive element, respectively. Attached Figure Description

[0062] The technical solution of this application will be further described in detail below with reference to the accompanying drawings and embodiments. In the drawings, unless otherwise specified, the same reference numerals are used to denote the same parts. Wherein:

[0063] Figure 1 This is a schematic diagram of the optical path of some embodiments of the camera module according to this application;

[0064] Figure 2 These are schematic cross-sectional views of some embodiments of the camera module according to this application;

[0065] Figure 3 This is an exploded view of some embodiments of the driving components according to this application;

[0066] Figure 4 This is an exploded view of the drive carrier and friction plate according to some embodiments of this application;

[0067] Figure 5 These are axial views of some embodiments of the first carrier according to this application;

[0068] Figure 6 These are axial views of some embodiments of the second carrier according to this application;

[0069] Figure 7 This is a perspective view of a first carrier and a second carrier according to some embodiments of this application, including a first friction plate and a second friction plate respectively fixedly connected to the first carrier and the second carrier;

[0070] Figure 8 This is an axial view of a first carrier and a second carrier according to some embodiments of this application, including a first friction plate and a second friction plate fixedly connected to the first carrier and the second carrier respectively, and a first guide rod and a second guide rod passing through the first carrier and the second carrier respectively;

[0071] Figure 9 yes Figure 8 A three-dimensional view of the structure shown.

[0072] Figure 10This is a plan view of a first carrier and a second carrier according to some embodiments of this application, including a first friction plate and a second friction plate fixedly connected to the first carrier and the second carrier respectively, a first guide rod and a second guide rod penetrating the first carrier and the second carrier, and first and second driving elements for driving the first friction plate and the second friction plate respectively.

[0073] Figure 11 yes Figure 10 A three-dimensional view of the structure shown.

[0074] Figure 12 ac is a schematic diagram of the interaction between the piezoelectric actuator and the friction plate according to some embodiments of this application;

[0075] Figure 13 This is a schematic side view of a first carrier according to some embodiments of this application, including an assembled first friction plate, a first driving element, and a first friction mechanism;

[0076] Figure 14 This is a schematic side view of a second carrier according to some embodiments of this application, including an assembled second friction plate, a second driving element, and a second friction mechanism;

[0077] Figure 15 A schematic side view of a first carrier according to some embodiments of this application includes a first upper driving element and a first lower driving element on both sides of a first friction plate;

[0078] Figure 16 ad is a schematic diagram of the piezoelectric drive principle according to some embodiments of this application;

[0079] Figure 17 This is a schematic side view of a second carrier according to some embodiments of this application, including a second upper driving element and a second lower driving element on both sides of a second friction plate;

[0080] Figure 18 This is a perspective view of a driving component according to some embodiments of this application;

[0081] Figure 19 This is a perspective view of a pre-pressure device according to some embodiments of this application;

[0082] Figure 20 This is a perspective view of a driving substrate according to some embodiments of this application;

[0083] Figure 21 This is a perspective view of a drive assembly according to some embodiments of this application, including an installed preload device and a drive substrate;

[0084] Figure 22aThis is an axial view of a drive assembly according to some embodiments of this application, wherein each friction plate is provided with a drive element and a friction mechanism on both sides;

[0085] Figure 22b This is an axial view of a drive assembly according to some other embodiments of this application, wherein each friction plate is provided with an upper drive element and a lower drive element on both sides;

[0086] Figure 23 This is a perspective view of a drive assembly according to some embodiments of this application, including a mounting support mechanism;

[0087] Figure 24 This is a perspective view of a carrier mechanism according to some embodiments of this application;

[0088] Figure 25 This is a perspective view of a drive assembly according to some embodiments of this application, including a drive housing having an upper housing and a lower housing;

[0089] Figure 26 This is a flowchart illustrating a method for assembling a drive assembly for driving a lens according to some embodiments of this application;

[0090] Figure 27 This is a flowchart illustrating a method for assembling a camera module according to some embodiments of this application. Detailed Implementation

[0091] To better understand this application, various aspects of this application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of this application and are not intended to limit the scope of this application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0092] It should be noted that in this specification, the terms "first," "second," "third," etc., are used only to distinguish one feature from another and do not imply any limitation on the features. Therefore, without departing from the teachings of this application, the first driving element discussed below may also be referred to as a zoom driving element, and the second driving element may also be referred to as a focus driving element. Similarly, the first driving substrate may also be referred to as a zoom substrate, and the second driving substrate may also be referred to as a focus substrate, and so on.

[0093] In the accompanying drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for ease of illustration. Specifically, the structural shapes shown in the drawings are illustrated by way of example only. The drawings are for illustrative purposes only and are not drawn to scale.

[0094] It should also be understood that the terms "comprising," "including," "having," "containing," and / or "comprising," when used in this specification, indicate the presence of the stated features, elements, and / or components, but do not exclude the presence or addition of one or more other features, elements, components, and / or combinations thereof. Furthermore, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire list of features, not individual elements in the list. Additionally, when describing embodiments of this application, the word "may" is used to mean "one or more embodiments of this application." And the term "exemplary" is intended to refer to an example or illustration.

[0095] Unless otherwise specified, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms (e.g., those defined in common dictionaries) shall be interpreted as having the meaning consistent with their meaning in the context of the relevant art and shall not be interpreted in an idealized or overly formal sense unless expressly so specified herein.

[0096] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0097] like Figures 1-2 As shown, the camera module 100 according to some embodiments of this application is implemented as a periscope camera module, which includes a zoom lens group 10, a driving assembly 20, a photosensitive assembly 30, and a light-deflecting element 40. The zoom lens group 10 is also referred to as a lens in the following description. The light-deflecting element 40 is used to receive imaging light from the subject and deflect the imaging light to the zoom lens group 10. The zoom lens group 10 corresponds to the light-deflecting element 40 and is used to receive the imaging light from the light-deflecting element 40 and converge the imaging light. The zoom lens group 10 is disposed on the light-sensing path of the photosensitive assembly 30. The photosensitive assembly 30 corresponds to the zoom lens group 10 and is used to receive the imaging light from the zoom lens group 10 and form an image.

[0098] In some embodiments of this application, the light-deflecting element 40 is configured to deflect the imaging light from the target by 90°, thereby reducing the overall height of the zoom camera module 100. Here, considering manufacturing tolerances, in actual operation, the angle at which the light-deflecting element 40 deflects the imaging light may have an error of less than 1°, which should be understood by those skilled in the art.

[0099] In a specific example of this application, the light-deflecting element 40 can be implemented as a reflector (e.g., a plane reflector) or a light-deflecting prism (e.g., a triangular prism). For example, when the light-deflecting element 40 is implemented as a light-deflecting prism, the light incident surface and the light exiting surface of the light-deflecting prism are perpendicular to each other, and the light reflecting surface of the light-deflecting prism is inclined at a 45° angle to the light incident surface and the light exiting surface. In this way, when the imaging light enters the light-deflecting prism perpendicular to the light incident surface, the imaging light can be deflected at 90° at the light reflecting surface and output from the light exiting surface perpendicular to the light exiting surface.

[0100] Of course, in other embodiments of this application, the light-deflecting element 40 can also be implemented as other types of optical elements, and this is not limited to this embodiment. Furthermore, in some embodiments of this application, the zoom camera module 100 can also include a greater number of light-deflecting elements 40, one reason being that one function of introducing the light-deflecting element 40 is to deflect the imaging light rays, enabling structural folding of the optical system of the zoom camera module 100, which has a relatively long total track length (TTL). Accordingly, when the total track length (TTL) of the zoom camera module 100 is too long, a greater number of light-deflecting elements 40 can be provided to meet the size requirements of the zoom camera module 100. For example, the light-deflecting element 40 can be positioned on the image side of the zoom camera module 100 or between any two lenses in the zoom lens group 10.

[0101] like Figures 1-2 As shown, in some embodiments of this application, the zoom lens group 10 includes a fixed group 11 and an adjustable group. The adjustable group includes, for example, a zoom group 12 and a focus group 13. Obviously, the adjustable group can include other lens groups that need to be adjusted, and their number and type can be set as needed, and are not limited to the examples herein. For example, the adjustable group can include only one zoom group 12, only one focus group 13, or any combination of focus group 13 and zoom group 12. Optionally, each adjustable lens group is provided with a separate drive carrier and drive element, thereby enabling each lens group to be adjusted independently of each other.

[0102] It should be pointed out that, Figures 1-2The dashed line in the diagram represents the optical axis along which the light beam propagates within the camera module 100. The drive carrier carries the adjustable group of lenses, thus enabling adjustment and movement along the optical axis. It should be noted that the adjustment direction, drive direction, and optical axis direction coincide here. In the following description, "along the optical axis" and "along the drive direction" are therefore also referred to as "along the adjustment direction," meaning that the adjustment direction of the drive carrier, as an azimuth reference, is the same as the optical axis. For the same reason, the geometric axis of the drive carrier also coincides with the optical axis and the adjustment direction. In the following text, directions expressed using these terms are technically equivalent unless otherwise specified.

[0103] The fixed group 11 includes a first lens barrel 111 and at least one optical lens 112 housed within the first lens barrel 111. In some embodiments of this application, the fixed group 11 is adapted to be fixed to a non-moving portion of the drive assembly 20, meaning the position of the fixed group 11 within the zoom lens group 10 remains constant, and the fixed group 11 does not move in position when the zoom camera module 100 performs optical focusing and / or optical zoom functions. It is worth noting that in other embodiments of this application, the fixed group 11 may not include the first lens barrel 111, and may only include at least one optical lens 112, for example, it may only include multiple interlocking optical lenses 112. That is, in other embodiments of the application, the fixed group 111 may be implemented as a "naked lens". The number of fixed groups 11 is at least one.

[0104] The zoom group 12 includes a second lens barrel 121 and at least one optical lens 122 housed within the second lens barrel 121. The zoom group 12 is adapted to be driven by the driving assembly 20 to move along the optical axis direction defined by the zoom lens group 10, thereby realizing the optical zoom function of the zoom camera module 100, enabling the zoom camera module 100 to achieve clear imaging of targets at different distances. It is worth noting that in other embodiments of this application, the zoom group 12 may not have a second lens barrel 121, and may only include at least one optical lens 122, for example, it may only include multiple interlocking optical lenses 122. That is, in other embodiments of the application, the zoom group 12 may also be implemented as a "naked lens". The number of zoom groups 12 is at least one.

[0105] The focusing group 13 includes a third lens barrel 131 and at least one optical lens 132 housed within the third lens barrel 131. The focusing group 13 is adapted to be driven by the driving component 20 to move along the optical axis direction set by the zoom lens group 10, thereby realizing the focusing function of the zoom camera module 100. More specifically, the optical focusing achieved by driving the focusing group 13 can compensate for the focus shift caused by moving the zoom group 12, thereby compensating for the imaging performance of the zoom camera module 100 and ensuring that its imaging quality meets preset requirements. It is worth mentioning that in other embodiments of this application, the focusing group 13 may not have the third lens barrel 131, and may only include at least one optical lens 132, for example, it may only include multiple interlocking optical lenses 132. That is, in other embodiments of the application, the focusing group 13 may also be implemented as a "naked lens". The number of focusing groups 13 is at least one.

[0106] In some embodiments of this application, preferably, the fixed group 11, the zoom group 12, and the focus group 13 are arranged sequentially along the optical axis of the zoom lens group 10 (that is, in the zoom lens group 10, the zoom group 12 is located between the fixed group 11 and the focus group 13). This means that when the imaging light from the light-deflecting element 40 passes through the zoom lens group 10, it will sequentially pass through the fixed group 11, then through the zoom group 12, and finally through the focus group 13. The zoom group 12 and the focus group 13 can be adjusted relative to the fixed group 11 under the drive of the driving component 20, thereby adjusting the optical performance of the zoom camera module 100, including but not limited to optical focusing and optical zoom functions. Of course, in other embodiments of this application, the relative positional relationship between the fixed group 1111, the zoom group 12, and the focusing group 13 can be adjusted according to the optical and structural design requirements of the zoom camera module 100. For example, the fixed group 11, the focusing group 13, and the zoom group 12 can be arranged sequentially along the optical axis of the zoom lens group 10, that is, the focusing group 13 can be located between the fixed group 11 and the zoom group 12. Alternatively, the zoom group 12, the fixed group 11, and the focusing group 13 can be arranged sequentially along the optical axis of the zoom lens group 10, that is, the fixed group 11 can be located between the focusing group 13 and the zoom group 12. However, in particular, in some embodiments of this application, considering the structural design of the zoom camera module 100, it is preferable that the focusing group 13 and the zoom group 12 are arranged adjacent to each other. That is, according to some embodiments of this application, the positions of the various parts in the zoom lens group 10 are preferably configured such that: the zoom group 12 is located between the fixed group 11 and the focusing group 13, or the focusing group 13 is located between the fixed group 11 and the zoom group 12. It should be understood that the zoom group 12 and the focusing group 13 are the parts of the zoom lens group 10 that need to be moved. Therefore, arranging the focusing group 13 and the zoom group 12 adjacently is advantageous for arranging the drive assembly 20. This part will be elaborated in the specific description of the drive assembly 20.

[0107] It is also worth mentioning that, in such Figure 2In the illustrated embodiment, although the zoom lens group 10 is used as an example, it includes a fixed group 11, a zoom group 12, and a focus group 13. However, those skilled in the art should know that in other embodiments of this application, the specific number of the fixed group 11, the zoom group 12, and the focus group 13 is selected and is not limited to this embodiment. It can be adjusted according to the optical design requirements of the zoom camera module 100.

[0108] To limit the imaging light entering the photosensitive component 30, in some examples of this application, the zoom camera module 100 further includes a light-blocking element (not shown) disposed on the light-sensing path of the photosensitive component 30. The light-blocking element is capable of at least partially blocking the projection of the imaging light to minimize the impact of stray light on the imaging quality of the zoom camera module 100. Preferably, the light-blocking element is disposed on the light-incident surface or light-excising surface of the light-deflecting element 40.

[0109] like Figure 1 and Figure 2 As shown, in some embodiments of this application, the photosensitive component 30 includes a circuit board 31, a photosensitive chip 32, electronic components 33, a base 34, and a filter element 35. The photosensitive chip 32 is disposed on the circuit board 31 and electrically connected to the circuit board 31. The base 34 is disposed on the circuit board 31 and located around the photosensitive chip 32, and the filter element 35 is mounted on the base 34 to be held in the photosensitive path of the photosensitive chip 32. The photosensitive chip 32 includes a photosensitive area and a non-photosensitive area surrounding the photosensitive area.

[0110] In one example of this application, the photosensitive chip 32 is mounted on the upper surface of the circuit board 31 and electrically connected to the circuit board 31 by gold wire bonding. Of course, in other embodiments of this application, the photosensitive chip 32 can also be disposed on the circuit board 31 and / or electrically connected to the circuit board 31 in other ways, for example, attached to the lower surface of the circuit board 31 in a flip-chip manner; however, this is not limited to this embodiment. It should be understood that in some embodiments of this application, the photosensitive path of the photosensitive chip 32 forms the photosensitive path of the photosensitive component 30.

[0111] The base 34 is disposed on the circuit board 31 to encapsulate electronic devices located on the circuit board 31 and to support other components. In a specific example of this application, the base is implemented as a separately molded plastic bracket, which is attached to the surface of the circuit board 31 by an adhesive and is used to support other components. Of course, in other embodiments of this application, the base can also be formed on the circuit board 31 in other ways. For example, the base is implemented as a molded base, which is integrally formed on a predetermined position of the circuit board 31 by a molding process. However, this embodiment is not the only one that can be described in this case.

[0112] In some embodiments of this application, the filter element 35 is held on the light-sensitive path of the photosensitive chip 32 to filter the imaging light entering the photosensitive chip 32. In a specific example, the filter element 35 is mounted on the base 34 and corresponds to at least the light-sensitive area of ​​the photosensitive chip 32, thereby holding the filter element 35 on the light-sensitive path of the photosensitive chip 32. It is worth mentioning that in other embodiments of this application, the filter element 35 can also be mounted on the base 34 in other ways. For example, a filter element 35 support can be first provided on the base 34, and then the filter element 35 can be mounted on the filter element 35 support. That is, in this example, the filter element 35 can be indirectly mounted on the base 34 through other support members. Furthermore, in other embodiments of this application, the filter element 35 can also be installed at other locations of the zoom camera module 100, for example, the filter element 35 is formed within the zoom lens group 10 (for example, as a filter film attached to the surface of an optical lens of the zoom lens group 10), but this is not limited to this embodiment.

[0113] As mentioned earlier, the development trend of camera modules towards high pixel counts, large chips, and small sizes places higher technical demands on the driving components 20 used to drive the focusing group 13 and the zoom group 12 of the zoom lens group 10. These mainly include: relatively greater driving force and superior driving performance (specifically including: higher precision drive control and longer drive stroke). Through research and experimentation, the inventors of this application propose a piezoelectric actuator with a novel structure that meets the technical requirements of the zoom camera module 100 for the driver. Furthermore, the piezoelectric actuator is arranged within the zoom camera module 100 using a suitable configuration to meet the structural and dimensional design requirements of the zoom camera module 100.

[0114] According to one aspect of this application, a drive assembly 20 for driving a lens is provided, comprising:

[0115] The drive carrier 22 has a carrier body with an adjustable group for carrying the lens;

[0116] The driving element 21 is used to provide a driving force that moves the driving carrier along the adjustment direction;

[0117] The friction plate has one end fixedly connected to the carrier body of the driving carrier 22, and the other end operatively connected to the driving element 21, so that the driving element 21 can drive the friction plate to move along the adjustment direction.

[0118] It should be noted that the driving assembly 20 proposed in this application may include one or more driving carriers 22, and in particular, each driving carrier 22 is equipped with its own driving element 21. Thus, each driving carrier 22 can carry an adjustable group of lenses and can be driven individually by its associated driving element 21 to move along the adjustment direction, achieving optical functions such as zooming or focusing. Correspondingly, each individual driving element 21 is also equipped with corresponding components, including a friction plate, a friction mechanism 215, a prestressing device 23, a driving base plate 27, a supporting mechanism 25, etc. In the following description with reference to the accompanying drawings, the driving assembly 20 includes two driving carriers as an example, namely, a first carrier 221 and a second carrier 222, but this example does not constitute a limitation on the inventive concept. Obviously, the driving assembly 20 may include one, three, or more driving carriers, and can also achieve the structure, function, and effect described later. Similarly, the structure, composition and features described below in conjunction with the first carrier 221 and the second carrier 222 also apply to drive assembly 20 which includes one, three or more drive carriers. In particular, the description given for the first carrier 221 and its related components is equivalent to the case where drive assembly 20 includes only one drive carrier, and therefore will not be explained separately in the following description.

[0119] Figure 3 These are exploded views of some embodiments of the drive component 20 according to this application. For example... Figure 3 As shown, in some embodiments of this application, the drive assembly 20 includes a drive element 21, a drive carrier 22, a pre-pressure device 23, a guide device 24, a support mechanism 25, a drive housing 26, a drive substrate 27, and a position sensing element 28.

[0120] In this application, the adjustable group of the zoom lens group 10 is housed in the drive carrier 22. The drive carrier 22 is moved by the drive element 21, thereby moving the zoom lens group 10 to achieve the optical focusing and / or optical zoom functions of the zoom camera module 100. Here, the drive element 21 provides a driving force that moves the drive carrier 22 along the adjustment direction, that is, along the optical axis of the lens group.

[0121] The driving component 20 is used to drive the zoom group 12 and the focus group 13 of the zoom lens group 10 so that the distance between the zoom group 12 and the focus group 13 and the photosensitive chip 32 is adjusted, thereby realizing the optical focusing and / or optical zoom function of the zoom camera module 100.

[0122] A friction plate is provided between the driving element 21 and the carrier body of the driving carrier 22. One end of the friction plate is fixedly connected to the carrier body of the driving carrier 22, and the other end is operatively connected to the driving element 21, so that the driving element 21 can drive the friction plate to move along the adjustment direction.

[0123] The drive assembly 20 further includes a pre-pressure device 23 that provides pre-pressure to the drive element 21, such that the drive element 21 maintains frictional contact with the friction plate under the action of the pre-pressure. For example, the pre-pressure device 23 may include an upper clamping portion 231, a lower clamping portion 233, and a connecting portion connecting the upper clamping portion and the lower clamping portion 232, and elastically clamps the friction plate, the drive element 21 arranged on both sides of the friction plate, and a possible friction mechanism 215 between the upper clamping portion 231 and the lower clamping portion 233 of the pre-pressure device 23.

[0124] The drive assembly 20 further includes a guide device 24, which is disposed on the drive carrier 22 and controls the movement direction of the drive carrier 22 to achieve the guiding function of the guide device 24. For example, the guide device 24 is configured to be slidably connected to the drive carrier 22, so that the drive carrier 22 can move along the guide device 24 under the drive of the drive element 21. As an example, the guide device 24 includes a guide rod that passes through the connection hole of the drive carrier 22 parallel to the adjustment direction, so that the drive carrier 22 can move along the guide device 24 under the drive of the drive element 21. Obviously, the guide device 24 can also be constructed as other known sliding guide structures, such as slide rails, guide grooves, etc.

[0125] The drive assembly 20 may further include a friction mechanism 215 disposed between the pre-pressure device 23 and the friction plate, such that the friction plate and the pre-pressure device 23 are movably connected through the friction mechanism 215, wherein the pre-pressure device 23 presses the friction mechanism 215 against the friction plate. For example, a drive element 21 may be disposed on one side of the friction plate, and the friction mechanism 215 may be disposed on the opposite side of the friction plate, such that the friction plate is clamped between the drive element 21 and the friction mechanism 215 under the action of the pre-pressure device 23, allowing the friction plate to move along the adjustment direction under the driving action of the drive element.

[0126] The driving assembly 20 may further include a driving substrate 27 disposed between the pre-pressure device 23 and the driving element 21 for supplying current to the driving element 21. For this purpose, the driving substrate 27 extends to the circuit board 31 of the photosensitive assembly 30 to enable circuit conduction of the driving assembly 20. Furthermore, the driving substrate 27 can be clamped onto the driving element 21 by the pre-pressure device 23.

[0127] The driving assembly 20 may further include a position sensing element 28, which is configured to sense the position of a moving component, such as the moving position of the driving carrier 22 or the friction plate. Optionally, the position sensing element 28 may be fixed on the driving substrate 27. Optionally, the second conductive end of the driving substrate 27 is provided with an extension, which extends inward toward the optical axis or the driving carrier 22, and is opposite to the guiding device 24 based on the friction plate or the plane where the friction plate is located. The position sensing element 28 is disposed on the extension, and a sensing magnet is provided on the friction plate opposite to the position of the position sensing element 28.

[0128] The drive assembly 20 may further include a drive housing 26, which serves as the outer housing of the drive assembly 20, enclosing the aforementioned components within its internal space. For example, the drive housing 26 may include an upper housing 261 and a lower housing 262 connected to the upper housing 261 to form a closed structure. After assembly, the upper housing 261 and the lower housing 262 can be connected and fixed to form a closed space.

[0129] The drive assembly 20 may also include a support mechanism 25. For example, the support mechanism 25 may be disposed between the pre-pressure device 23 and the drive housing 26, which can not only provide support for the drive element 21, drive carrier 22 and pre-pressure device 23, but also fix the drive element 21 and pre-pressure device 23 to the drive housing 26 through the support mechanism 25.

[0130] For example, the pre-pressure device 23 can be disposed in the mounting space of the support mechanism 25, for example, by means of an elastically inserted clamp in the mounting space. The mounting space is formed, for example, by a plurality of protruding positioning posts 251 of the support mechanism 25. Thus, viewed transversely in the adjustment direction, the pre-pressure device 23 is positioned between the drive carrier 22 and the support mechanism 25, providing a certain pre-pressure to the drive element 21, so that the drive element 21 and the drive carrier 22, specifically the friction plate, can maintain frictional contact under the action of the pre-pressure.

[0131] In some embodiments, the driving carrier 22 further includes a connecting end extending outward from the carrier body of the driving carrier 22, the connecting end having a connecting hole, and the guiding device 24 including a guide rod that passes through the connecting hole of the connecting end of the driving carrier 22 parallel to the adjustment direction, so that the driving carrier 22 can move along the guiding device 24 under the drive of the driving element 21.

[0132] Specifically, the first carrier 221 includes a first connecting end 22121 extending outward from the carrier body 2211 of the first carrier 221 and a second connecting end 22122 extending outward from the carrier body 2211 of the first carrier 221, wherein the first connecting end 22121 and the second connecting end 22122 are respectively located on opposite sides of the carrier body 2211 of the first carrier 221, wherein the first connecting end 22121 of the first carrier 221 has a first connecting hole 221211, and the second connecting end 22122 of the first carrier 221 has a second connecting hole 221221.

[0133] The second carrier 222 also includes a first connecting end 22221 extending outward from the carrier body 2221 of the second carrier 222 and a second connecting end 22222 extending outward from the carrier body 2221 of the second carrier 222, wherein the first connecting end 22221 and the second connecting end 22222 are respectively located on opposite sides of the carrier body 2221 of the second carrier 222, wherein the first connecting end 22221 of the second carrier 222 has a first connecting hole 222211, and the second connecting end 22222 of the second carrier 222 has a second connecting hole 222221.

[0134] The guiding device 24 includes a first guide rod 241 and a second guide rod 242. The first guide rod 241 passes through the second connection hole 221221 of the second connection end 22122 of the first carrier 221 and the first connection hole 222211 of the first connection end 22221 of the second carrier 222. The second guide rod 242 passes through the first connection hole 221211 of the first connection end 22121 of the first carrier 221 and the second connection hole 222221 of the second connection end 22222 of the second carrier 222. Thus, the first carrier 221 and the second carrier 222 can move independently along the first guide rod 241 and the second guide rod 242 of the guiding device 24 under the drive of the first driving element and the second driving element, respectively. The first guide rod 241 and the second guide rod 242 are arranged parallel to each other along the adjustment direction.

[0135] According to some embodiments of this application, a structural space is formed between the driving element 21 and the carrier body of the driving carrier 22. A friction plate is disposed in this structural space between the driving element 21 and the carrier body of the driving carrier 22, with one end of the friction plate fixedly connected to the carrier body of the driving carrier 22 and the other end operatively connected to the driving element 21, enabling the driving element 21 to drive the friction plate to move along the adjustment direction. Therefore, the friction plate disposed in the structural space between the driving element and the carrier body of the driving carrier divides the structural space into a first structural space and a second structural space opposite to the first structural space. Here, the first structural space and the second structural space opposite to the first structural space are, for example, represented by the upper space and lower space of the friction plate in the accompanying drawings.

[0136] Specifically, the first carrier 221 and the second carrier 222 in the accompanying drawings are described in detail below.

[0137] Figure 4 This is an exploded view of the drive carrier 22 and the friction plate according to some embodiments of this application. For this purpose, the drive carrier 22 includes, for example, a first carrier 221 and a second carrier 222, which are respectively used to carry at least one adjustable group of lenses, such as zoom group 12 and focus group 13, wherein the first carrier 221 and the second carrier 222 are arranged sequentially on the same axis along the adjustment direction and are capable of moving independently of each other along the adjustment direction.

[0138] Specifically, such as Figures 5-7 As shown, the driving carrier 22 includes a first carrier 221 and a second carrier 222. The first carrier 221 and the second carrier 222 are arranged sequentially along the optical axis of the zoom lens group 10. The first carrier 221 and the second carrier 222 move along the optical axis or the adjustment direction under the drive of the first driving element 211 and the second driving element 212, respectively. For this purpose, see... Figure 10 The drive assembly 20 includes a first drive element 211 for providing a driving force to move the first carrier 221 along the adjustment direction, and a second drive element 212 for providing a driving force to move the second carrier 222 along the adjustment direction.

[0139] The zoom group 12 is mounted on the first carrier 221, and the focus group 13 is mounted on the second carrier 222. Alternatively, the focus group 13 can be mounted on the first carrier 221, and the zoom group 12 can be mounted on the second carrier 222. In this application, the zoom group 12 and the focus group 13 are respectively disposed on two carriers, avoiding interference between the zoom group 12 and the focus group 13 during movement, thus preventing any impact on the optical zoom and / or optical focusing effects.

[0140] The first carrier 221 includes a first carrier body 2211 and a connecting end 2212.

[0141] The first carrier body 2211 has a receiving cavity 22111, which can accommodate the focusing group 13 or the zoom group 12.

[0142] The first carrier 221's connecting end 2212 includes a first connecting end 22121 disposed on the first side wall of the first carrier body 2211 and extending outward, and a second connecting end 22122 disposed on the second side wall of the first carrier body 2211 and extending outward. The first side wall and the second side wall of the first carrier body 2211 are respectively located on opposite sides along the optical axis or along the adjustment direction.

[0143] The first connection end 22121 has a first connection hole 221211 formed therein, so as to connect the guide device 24 to the first carrier 221 through the connection hole.

[0144] The second connection end 22122 has a second connection hole 221221 formed therein, so as to connect the guide device 24 to the first carrier 221 through the connection hole.

[0145] The second connection end 22122 also has a mounting groove 221222 formed therein for mounting the first friction plate 2213.

[0146] In the examples of this application, the first connecting hole 221211 and the second connecting hole 221221 can be either through holes or grooves. Preferably, the first connecting hole 221211 is a groove, and the second connecting hole 221221 is a through hole.

[0147] In some embodiments of this application, the first connecting hole 221211 and the second connecting hole 221221 have a certain height difference, with the first connecting hole 221211 located at the lower end of the first carrier 221 and the second connecting hole 221221 located at the upper end of the first carrier 221. This arrangement can provide some clearance or structural space for other components in the drive assembly 20, making full use of the space in the drive assembly 20 and making the structure of the zoom camera module more compact.

[0148] Of course, in other embodiments of this application, the first connecting hole 221211 and the second connecting hole 221221 may also have the same height, that is, both are located at the upper or lower end of the first carrier 221. The first friction plate 2213 is disposed in the mounting groove 221222 of the second connecting end 22122.

[0149] The first friction plate 2213 and the first carrier 221 can be an integral structure or a separate structure. That is, the first friction plate 2213 can be integrally formed with the first carrier 221, or it can be embedded in the mounting groove 221222 of the second connecting end 22122 and thus fixed to the first carrier 221.

[0150] The first friction plate 2213 has a cubic structure, meaning that the first driving element 211 makes frictional contact with a friction surface of the first friction plate 2213, thereby driving the first friction plate 2213 to move the first carrier 221. The length of the friction surface of the first friction plate 2213 along the optical axis or the adjustment direction is greater than or equal to the travel distance of the first carrier 221. In this application, there is at least one first connecting hole 221211 and at least one second connecting hole 221221. For example, two second connecting holes 221221 can be provided at a certain distance from each other. The outer wall of the second connecting hole 221221 can form an inner wall of the mounting groove 221222.

[0151] like Figure 11 , Figure 22a As shown in -b, the first friction plate 2213 is disposed between the first carrier 221 and the first driving element 211. One end of the first friction plate 2213 is kinetically connected to the first driving element 211, for example, through frictional contact. The other end of the first friction plate 2213 extends inward and is fixedly connected to the first carrier body 2211 of the first carrier 221. The inward direction refers to the direction toward the optical axis.

[0152] Here, the guiding device 24 and the position sensing element 28 are both disposed within the empty space or structural space formed between the first carrier body 2211 and the first driving element 211. Specifically, the first friction plate 2213 connects the first carrier 221 and the first driving element 211, and the first friction plate 2213 extends inward to provide a certain clearance space for the guiding device 24 and the position sensing element 28 in the driving assembly 20. In other words, one end of the first friction plate 2213 is fixedly connected to the first carrier body 2211 of the first carrier 221, and the other end is operatively connected to the first driving element 211, so that the first driving element 211 can drive the first friction plate 2213 to move along the adjustment direction. Therefore, the first friction plate 2213 disposed in the structural space between the first driving element 211 and the first carrier body 2211 of the first carrier 221 divides the structural space into a first structural space and a second structural space opposite to the first structural space. Here, the first structural space and the second structural space opposite to the first structural space are, for example, the upper space and the lower space of the first friction plate 2213 in the attached figure.

[0153] In the first structural space, a position sensing element 28 for sensing the movement of the first carrier 221 or the first friction plate 2213 can be arranged, while in the second structural space opposite to the first structural space, a guide device 24 for guiding the first carrier 221 to move along the adjustment direction can be arranged, especially the guide rod of the guide device 24. In other words, for example, the guide device 24 and the position sensing element 28 can be respectively arranged in the upper space and the lower space of the first friction plate 2213, making the structure of the variable zoom camera module 100 more compact.

[0154] Here, the composition, structure and arrangement are illustrated using the first carrier 221 and its corresponding components as examples. These descriptions also apply to the second carrier 222 described below, and also to the case where the drive assembly 20 includes only one drive carrier, in which case the first carrier 221 is the only drive carrier.

[0155] The second carrier 222 may have the same structure as the first carrier 221, or it may have a different structure. In this application, the example of the second carrier 222 having the same structure as the first carrier 221 is used for description. It should be noted that the relevant component structures and arrangements described above in conjunction with the first carrier 221 are also applicable to the relevant component structures and arrangements of the second carrier 222, unless otherwise specified.

[0156] The second carrier 222 includes a second carrier body 2221 and a connecting end 2222. The second carrier body 2221 has a receiving cavity 22211, which can accommodate the focusing group 13 or the zoom group 12. The connecting end includes a second connecting end 22222 disposed on a first sidewall of the second carrier body 2221 and extending outward, and a first connecting end 22221 disposed on a second sidewall of the second carrier body 2221 and extending outward. The first and second sidewalls of the second carrier body 2221 are located on opposite sides along the optical axis or along the adjustment direction. The first connecting end 22221 has a first connecting hole 222211 formed therein, through which the guiding device 24 is connected to the second carrier 222. The second connecting end 22222 has a second connecting hole 222221 formed therein for connecting the guide device 24 to the second carrier 222 through the connecting hole. The second connecting end 22222 also has a mounting groove 222222 formed therein for mounting the second friction plate 2223.

[0157] In the illustrated example, the first connecting hole 222211 and the second connecting hole 222221 can be either through holes or recesses. Preferably, the first connecting hole 222211 is a recess, and the second connecting hole 222221 is a through hole. In some embodiments of this application, the first connecting hole 222211 and the second connecting hole 222221 have a certain height difference, with the first connecting hole 222211 located at the upper end of the second carrier 222 and the second connecting hole 222221 located at the lower end of the second carrier 222. This arrangement provides some clearance space for other components in the drive assembly 20, making full use of the space in the drive assembly 20 and making the structure of the zoom camera module 100 more compact. Of course, in other embodiments of this application, the first connecting hole 222211 and the second connecting hole 222221 can also have the same height, i.e., both are located at the upper or lower end of the second carrier 222. The second friction plate 2223 is disposed in the mounting groove 222222 of the second connecting end 22222.

[0158] The second friction plate 2223 and the second carrier 222 can be an integral structure or a separate structure. That is, the second friction plate 2223 can be integrally formed with the second carrier 222, or it can be embedded in the mounting groove 222222 of the second connecting end 22222 and thus fixed to the second carrier 222. The second friction plate 2223 has a cubic structure, meaning that the second driving element 212 makes frictional contact with one friction surface of the second friction plate 2223, thereby driving the second friction plate 2223 to move the second carrier 222. The length of the friction surface of the second friction plate 2223 along the optical axis or along the adjustment direction is greater than or equal to the travel distance of the second carrier 222.

[0159] In this application, the number of first connecting holes 222211 is at least one, and the number of second connecting holes 222221 is at least one. For example, two second connecting holes 222221 that are a certain distance apart from each other can be provided. The outer wall of the second connecting hole 222221 can form an inner wall of the mounting groove 222222.

[0160] Referring to the embodiment shown in the accompanying drawings, the mounting grooves within the first carrier 221 and the second carrier 222 are clamping track structures. The first friction plate 2213 and the second friction plate 2223 are respectively clamped within parallel tracks, thereby improving the parallelism between the friction plates and the driving carrier. This reduces shaking and jamming during travel, making the optical system of the variable-focus camera module 100 more stable and preventing tilting. Preferably, the first friction plate 2213 and the second friction plate 2223 are on the same horizontal plane. Preferably, the first friction plate 2213 and the second friction plate 2223 are ceramic sheets.

[0161] like Figure 11 , Figure 22a As shown in -b, the second friction plate 2223 is disposed between the second carrier 222 and the second driving element 212. One end of the second friction plate 2223 is in frictional contact with the second driving element 212, and the other end of the second friction plate 2223 extends inward and is fixedly connected to the second carrier body 2221 of the second carrier 222. The inward direction refers to the direction towards the optical axis or the geometric axis of the driving carrier.

[0162] In this application, both the guiding device 24 and the position sensing element 28 are disposed within the empty space or structural space formed between the second carrier body 2221 and the second driving element 212. Specifically, the second friction plate 2223 connects the second carrier 222 and the second driving element 212, and the second friction plate 2223 extends inward to provide a certain clearance space for the guiding device and the position sensing element in the driving assembly. In other words, one end of the second friction plate 2223 is fixedly connected to the second carrier body 2221 of the second carrier 222, and the other end is operatively connected to the second driving element 212, so that the second driving element 212 can drive the second friction plate 2223 to move along the adjustment direction. Therefore, the second friction plate 2223 disposed in the structural space between the second driving element 212 and the second carrier body 2221 of the second carrier 222 divides the structural space into a first structural space and a second structural space opposite to the first structural space. Here, the first structural space and the second structural space opposite to the first structural space are, for example, the upper space and the lower space of the second friction plate 2223 in the attached figure.

[0163] In the first structural space, a position sensing element 28 for sensing the movement of the second carrier 222 or the second friction plate 2223 can be arranged, while in the second structural space opposite to the first structural space, a guide device 24 for guiding the second carrier 222 to move along the adjustment direction can be arranged, especially the guide rod of the guide device 24. In other words, for example, the guide device 24 and the position sensing element 28 can be respectively arranged in the upper space and the lower space of the second friction plate 2223, making the structure of the variable zoom camera module 100 more compact.

[0164] In the driving assembly 20, the first carrier 221 and the second carrier 222 are arranged sequentially along the optical axis or the adjustment direction. The first friction plate 2213 of the first carrier 221 is disposed on the first side of the driving assembly 20, and the second friction plate 2223 of the second carrier 222 is disposed on the second side of the driving assembly 20. The first side and the second side of the driving assembly 20 are respectively located on opposite sides along the optical axis or the adjustment direction.

[0165] The first connecting end 22121 of the first carrier 221 and the second connecting end 22222 of the second carrier 222 are located on the first side of the driving assembly 20, and the second connecting end 22122 of the first carrier 221 and the first connecting end 22221 of the second carrier 222 are located on the second side of the driving assembly 20. The first side and the second side of the driving assembly 20 are located on opposite sides along the optical axis or along the adjustment direction. Specifically, the first connecting end 22121 of the first carrier 221 is located above or below the second friction plate 2223 of the second carrier 222, and the first connecting end 22221 of the second carrier 222 is located below or above the first friction plate 2213 of the first carrier 221. In other words, the first connecting end 22121 of the first carrier 221 needs to avoid the position of the second friction plate 2223 of the second carrier 222, and the position of the first connecting end 22221 of the second carrier 222 needs to avoid the position of the first friction plate 2213 of the first carrier 221, so as to avoid interfering with the movement of the friction plate, and also to make the structure of the drive assembly 20 more compact.

[0166] Furthermore, in this application, the first friction plate 2213 and the second friction plate 2223 are cubic structures, each having a friction surface arranged along the optical axis or the adjustment direction. The driving element contacts the friction surface to provide corresponding driving forces to the first friction plate 2213 and the second friction plate 2223, enabling the first friction plate 2213 and the second friction plate 2223 to move more smoothly.

[0167] In this application, the lengths of the first friction plate 2213 and the second friction plate 2223 along the optical axis or the adjustment direction can be the same or different, that is, the lengths of the first friction plate 2213 and the second friction plate 2223 are determined according to the driving stroke of the corresponding driving element. When the driving stroke of the corresponding driving element is long, the lengths of the first friction plate 2213 and the second friction plate 2223 are longer; when the driving stroke of the corresponding driving element is short, the lengths of the first friction plate 2213 and the second friction plate 2223 can be shorter.

[0168] In some embodiments, the first friction plate 2213, which is fixedly connected to the first carrier body 2211 of the first carrier 221, extends away from the second carrier 222 along the adjustment direction, and the second friction plate 2223, which is fixedly connected to the second carrier body 2221 of the second carrier 222, extends away from the first carrier 221 along the adjustment direction. In other words, the first friction plate 2213 and the second friction plate 2223 extend in opposite directions along the optical axis or along the adjustment direction, i.e., one extends towards the object side and the other extends towards the image side.

[0169] Here, the first driving element 211 and the first friction plate 2213 operatively connected to the first driving element 211 are located on the first side of the driving assembly 20, and the second driving element 212 and the second friction plate 2223 operatively connected to the second driving element 212 are located on the second side of the driving assembly 20. The first side and the second side are opposite to each other with respect to the common axis of the first carrier 221 and the second carrier 222.

[0170] Specifically, such as Figure 10 The first friction plate 2213 and the second friction plate 2223 extend in opposite directions along the optical axis or the adjustment direction, i.e., one extends towards the object side and the other extends towards the image side. In some embodiments of this application, the first friction plate 2213 may extend towards the object side in a direction away from the second carrier 222, and the second friction plate 2223 may extend towards the image side in a direction away from the first carrier 221. The object side is the side closer to the light deflection 40, and the image side is the side closer to the photosensitive component 30.

[0171] In some embodiments, a first driving element 211 is disposed at a midpoint along the adjustment direction of the driving assembly 20, and a second driving element 212 is disposed at a midpoint along the adjustment direction of the driving assembly 20. The first driving element 211 and the second driving element 212 may be arranged parallel to each other along the adjustment direction.

[0172] Specifically, the first friction plate 2213 and the second friction plate 2223 extend in different directions, which allows the first driving element 211 and the second driving element 212 to be positioned in the middle of the driving assembly 20. This ensures that the first friction plate 2213 and the second friction plate 2223 remain within the driving range of the first driving element 211 and the second driving element 212 during movement. That is, during the driving process, the first driving element 211 maintains frictional contact with the first friction plate 2213, and the second driving element 212 maintains frictional contact with the second friction plate 2223, without causing the first friction plate 2213 and the second friction plate 2223 to exceed the range of the moving stroke, thus preventing the first driving element 211 and the second driving element 212 from separating from the friction plate.

[0173] In some other embodiments, the guiding device 24 may include a plurality of guide rods, particularly two guide rods, namely a first guide rod 241 and a second guide rod 242.

[0174] Specifically, in combination Figures 8-9 The details are as follows.

[0175] like Figures 8-9As shown, the guiding device 24 includes a first guide rod 241 and a second guide rod 242. The first guide rod 241 and the second guide rod 242 are configured to guide the zoom lens group 10 to move along the optical axis with good precision, and their axes are parallel to the optical axis of the zoom lens group 10, or the adjustment direction.

[0176] The first guide rod 241 and the second guide rod 242 are respectively disposed on the second side and the first side opposite to the drive assembly 20, so as to cooperate with the first drive element 211 and the second drive element 212 to guide the movement of the first carrier 221 and the second carrier 222.

[0177] Therefore, the guide rods of the guiding device 24 can be fixedly connected to the drive housing 26 at both ends. The two ends of the first guide rod 241 and the second guide rod 242 are respectively fixed to the drive housing 26, so that the first guide rod 241 and the second guide rod 242 can be stably disposed within the drive assembly 20.

[0178] The first guide rod 241 and the second guide rod 242 are arranged along the optical axis or adjustment direction of the zoom lens group 10, and the first guide rod 241 and the second guide rod 242 are movably connected to the first carrier 221 and the second carrier 222 respectively, providing a guiding direction for the first carrier 221 and the second carrier 222 through the first guide rod 241 and the second guide rod 242.

[0179] In the illustrated embodiment, the first guide rod 241 passes through the second connection hole 221221 of the second connection end 22122 of the first carrier 221 and the first connection hole 222211 of the first connection end 22221 of the second carrier 222, and the second guide rod 242 passes through the first connection hole 2222111 of the first connection end 22121 of the first carrier 221 and the second connection hole 222221 of the second connection end 22222 of the second carrier 222, so that the first carrier 221 and the second carrier 222 can move independently along the first guide rod 241 and the second guide rod 242 of the guide device 24 under the drive of the first driving element 211 and the second driving element 212, respectively, wherein the first guide rod 241 and the second guide rod 242 are arranged parallel to each other along the adjustment direction.

[0180] Furthermore, the first guide rod 241 can be movably connected to the first carrier 221 through the second connecting hole 22122 of the second connecting end 22122 of the first carrier 221, and can be movably connected to the second carrier 222 through the first connecting hole 222211 of the first connecting end 22221 of the second carrier 222. Here, the second connecting hole 221221 of the second connecting end 22122 of the first carrier 221 and the first connecting hole 222211 of the first connecting end 22221 of the second carrier 222 are coaxial with each other.

[0181] Similarly, the second guide rod 242 can be movably connected to the first carrier 221 through the first connecting hole 222211 of the first connecting end 22121 of the first carrier 221, and movably connected to the second carrier 222 through the second connecting hole 222221 of the second connecting end 22222 of the second carrier 222. Here, the first connecting hole 222211 of the first connecting end 22121 of the first carrier 221 and the second connecting hole 222221 of the second connecting end 22222 of the second carrier 222 are coaxial with each other.

[0182] When the first driving element 211 drives the first carrier 221 to move along the optical axis or the adjustment direction, the first guide rod 241 can act as a main guide rod to guide the movement of the first carrier 221, and the second guide rod 242 can act as a secondary guide rod to prevent the first carrier 221 from rotating.

[0183] When the second driving element 212 drives the second carrier 222 to move along the optical axis or the adjustment direction, the second guide rod 242 can act as a main guide rod to guide the movement of the second carrier 222, and the first guide rod 241 can act as a secondary guide rod to prevent the second carrier 222 from rotating.

[0184] In other words, both the first guide rod 241 and the second guide rod 242 can serve as the main guide rod and the auxiliary guide rod, respectively. The two work together to guide the direction and prevent the drive carrier from rotating.

[0185] The first guide rod 241 and the second guide rod 242 can have a certain height difference. That is, the first guide rod 241 can be located at the upper end of the second side of the first carrier 221 and the second carrier 222, and the second guide rod 242 can be located at the lower end of the first side of the first carrier 221 and the second carrier 222, wherein the first side and the second side of the first carrier 221 and the second carrier 222 are located on opposite sides relative to the optical axis. This provides some clearance for other components in the drive assembly 20, making the structure of the variable zoom camera module 100 more compact.

[0186] Furthermore, the first guide rod 241 is disposed above the first friction plate 2213, and the second guide rod 242 is disposed below the second friction plate 2223, thereby reserving a certain amount of moving space for the first friction plate 2213 and the second friction plate 2223, and avoiding interference with the movement of the first carrier 221 and the second carrier 222. Of course, in other embodiments of this application, the first guide rod 241 may be disposed below the first friction plate 2213, and the second guide rod 242 may be disposed above the second friction plate 2223.

[0187] like Figures 10-17 As shown, the driving element 21 includes at least two driving elements: a zoom driving element 211 and a focus driving element 212, wherein the at least two driving elements 21 are implemented as piezoelectric actuators. Here, the zoom driving element 211 is also referred to as the first driving element, and the focus driving element 212 is also referred to as the second driving element. The corresponding driving elements may also perform other functions, and are not limited to the focusing or zooming functions illustrated herein.

[0188] In the accompanying drawings, the zoom drive element 211 and the focus drive element 212 are respectively disposed on the side of the drive assembly 20 to avoid increasing the height of the zoom camera module 100. Furthermore, the zoom drive element 211 and the focus drive element 212 are respectively disposed on a first side and a second side opposite to the drive assembly 20; that is, the zoom drive element 211 is disposed on the first side of the drive assembly 20, and the focus drive element 212 is disposed on the second side of the drive assembly 20 opposite to it.

[0189] When the zoom group 12 is disposed in the first carrier 221, the zoom drive element 211 is used to drive the first carrier 221 to move, thereby driving the zoom group 12 to move to achieve optical zoom function.

[0190] When the focus group 13 is disposed in the second carrier 222, the focus driving element 212 is used to drive the second carrier 222 to move, thereby driving the focus group 13 to move to achieve optical focusing function.

[0191] Of course, in other embodiments of this application, if the placement positions of the zoom group 12 and the focus group 13 change, the positions of the zoom drive element 211 and the focus drive element 212 also change. In this application, the zoom drive element 211 and the focus drive element 212 are symmetrically arranged. Preferably, the zoom drive element 211 and the focus drive element 212 are symmetrically arranged along the optical axis or along the adjustment direction. Furthermore, the zoom drive element 211 and the focus drive element 212 remain parallel to each other with respect to the optical axis. This arrangement of separate sides not only avoids an increase in the size of one side of the zoom camera module 100, but also prevents interference between the zoom drive element 211 and the focus drive element 212 during the respective driving of the first carrier 221 and the second carrier 222.

[0192] Furthermore, the arrangement of this application allows for full utilization of the internal space of the zoom camera module 100, facilitating its lightweight and thin design. It also provides parallel driving forces to the first carrier 221 and the second carrier 222, preventing tilting during movement. In this application, the zoom drive element 211 and the focus drive element 212 are positioned at the midpoint of the drive assembly 20 along the optical axis or adjustment direction. This ensures that the first friction plate 2213 and the second friction plate 2223 remain within the driving range of the drive element 21 during movement. Specifically, during driving, the first friction plate 2213 and the second friction plate 2223 maintain frictional contact with their respective drive elements, preventing them from exceeding the travel range and causing separation between the drive elements and the friction plates.

[0193] In some embodiments, the driving element 21 can be configured as a piezoelectric actuator, including a piezoelectric plate 213 and a friction driving portion 214 fixed on the piezoelectric plate, wherein the friction driving portion 214 is operatively connected to the friction plate, thereby driving the friction plate to move along the adjustment direction, that is, along the optical axis direction. Specifically, the friction driving portion 214 of the first driving element 211 can be operatively connected to the first friction plate 2213, thereby driving the first friction plate 2213 to move along the adjustment direction, and the friction driving portion 214 of the second driving element 212 can be operatively connected to the second friction plate 2223, thereby driving the second friction plate 2223 to move along the adjustment direction.

[0194] Figure 12 ac is a schematic diagram of the interaction between the piezoelectric actuator and the friction plate according to some embodiments of this application, wherein, in the initial position, Figure 12 a shows that the friction drive unit 214 is operatively connected to the friction plate 2213 (2223) at the middle position of the corresponding friction plate 2213 (2223). Figure 12 b shows that the friction drive unit 214 is operatively connected to the friction plate 2213 (2223) at one end of the corresponding friction plate 2213 (2223). Figure 12 c shows the action connection with friction plate 2213 (2223) at the opposite end.

[0195] like Figure 12 ac to Figure 17As shown, the driving element 21 includes at least one traveling-wave piezoelectric actuator, which has nanometer-level step-level precision, enabling it to meet the requirements of more demanding optical systems. As an example, the at least one piezoelectric actuator includes a piezoelectric ceramic plate 213 and a friction drive portion 214 fixed to the piezoelectric ceramic plate 213. The piezoelectric ceramic plate 213 is composed of very small piezoelectric ceramics. After being powered, the piezoelectric ceramic plate 213 is adapted to deform due to the inverse piezoelectric effect, thereby causing the friction drive portion 214 on the piezoelectric ceramic plate 213 to move accordingly.

[0196] Furthermore, the zoom drive element 211 is disposed on the first friction plate 2213, and the focus drive element 212 is disposed on the second friction plate 2223. That is, the zoom drive element 211 and the focus drive element 212 respectively drive the first friction plate 2213 and the second friction plate 2223 to move independently, thereby driving the corresponding first carrier 221 and the second carrier 222 to move independently. In this application, the length of the friction plate along the optical axis or along the adjustment direction is greater than or equal to the driving stroke of the drive element 21. In the following text, the zoom drive element 211 is referred to as the first drive element 211, and the focus drive element 212 is referred to as the second drive element 212.

[0197] In general, the friction drive unit 214 acts on the corresponding friction plate and makes frictional contact with the corresponding friction plate. Of course, preferably, in the initial state, the friction drive unit 214 is located at the middle position of the corresponding friction plate, and the friction plate can move bidirectionally along the optical axis direction or along the adjustment direction under the drive of the drive element 21, that is, moving towards the object side or towards the image side, that is, the friction drive unit 214 can move in two directions.

[0198] Specifically, in the initial position, the friction drive part 214 of the first drive element 211 can be operatively connected to the first friction plate 2213 at the middle position along the adjustment direction, and / or the friction drive part 214 of the second drive element 212 can be operatively connected to the second friction plate 2223 at the middle position along the adjustment direction.

[0199] Of course, in general, in the initial state, the friction drive unit 214 can also be at one end relative to the corresponding friction plate, so that the friction plate can move towards the other opposite end along the optical axis direction or along the adjustment direction under the drive of the friction drive unit 214 of the drive element 21.

[0200] Specifically, in the initial position, the friction drive part 214 of the first drive element 211 is operatively connected to the first friction plate 2213 at one end of the first friction plate 2213 along the adjustment direction, and / or the friction drive part 214 of the second drive element 212 is operatively connected to the second friction plate 2223 at one end of the second friction plate 2223 along the adjustment direction.

[0201] In other words, in the initial state, the friction drive unit 214 can also be located at the image-side end / object-side end of the corresponding friction unit, and the corresponding friction plate can move towards the object-side / image-side along the optical axis direction or the adjustment direction under the drive of the drive element 21. In this application, the image-side is the side facing the photosensitive component 30, and the object-side is the side away from the photosensitive component 30.

[0202] The first driving element 211 and the second driving element 212 can be the same type of piezoelectric actuator or different types of piezoelectric actuators. In this application, the first driving element 211 and the second driving element 212 are the same type of piezoelectric actuator as an example for introduction.

[0203] like Figures 13-17 as well as Figure 22a In the embodiments shown, a driving element is provided on one side of the friction plate, and a friction mechanism 215 is provided on the opposite side of the friction plate, so that the friction plate is clamped between the driving element and the friction mechanism 215 under the action of the pre-pressure device, so that the friction plate can move along the adjustment direction under the driving action of the driving element.

[0204] Specifically, Figure 13 This is a schematic side view of a first carrier 221 according to some embodiments of this application, including an assembled first friction plate 2213, a first driving element 211, and a first friction mechanism 2151. The first driving element 211, also referred to as a zoom driving element 211, includes a piezoelectric plate 213 and a friction driving part 214 fixed on the piezoelectric plate. The friction driving part 214 of the first driving element 211 is in frictional contact with the first friction plate 2213. After the first driving element 211 is powered, the piezoelectric ceramic plate 213 of the first driving element 211 undergoes a traveling wave-like surface change, thereby driving the friction driving part 214 of the first driving element 211 to produce a unidirectional oscillating reciprocating motion along the optical axis or along the adjustment direction. Due to the frictional contact between the friction driving part 214 of the first driving element 211 and the first friction plate 2213, the first friction plate 2213 is moved along the optical axis or along the adjustment direction.

[0205] Specifically, when the first driving element 211 is excited, the friction driving part 214 of the first driving element 211 comes into frictional contact with the first friction plate 2213, and the piezoelectric ceramic plate 213 of the first driving element 211 generates a traveling wave-like surface shape change. Under the drive, the friction driving part 214 of the first driving element 211 yaws along the optical axis or along the adjustment direction, thereby driving the first friction plate 2213 to move along the optical axis or along the adjustment direction.

[0206] After one motion cycle is completed, the piezoelectric ceramic plate 213 of the first driving element 211 is lifted, and the friction driving part 214 of the first driving element 211 separates from the first friction plate 2213 until the friction driving part 214 and the first friction plate 2213 come into frictional contact again. Under the drive of the piezoelectric ceramic plate 213, the friction driving part 214 of the first driving element 211 is repositioned and swings again along the optical axis or along the adjustment direction, thereby driving the first friction plate 2213 to continue to move along the optical axis or along the adjustment direction. Figure 16 The diagram above illustrates the relevant piezoelectric drive principle.

[0207] In this application, the first driving element 211 can be disposed on the upper or lower part of the first friction plate 2213. That is, the friction driving part 214 of the first driving element 211 can rub against the upper friction surface of the first friction plate 2213 or rub against the lower friction surface of the first friction plate 2213. Therefore, the first driving element 211 can be used to provide a driving force to move the first carrier 221 along the adjustment direction. The first friction plate 2213 can be disposed between the carrier body 2211 of the first carrier 221 and the first driving element 211, wherein one end of the first friction plate 2213 is fixedly connected to the carrier body 2211 of the first carrier 221, and the other end is operatively connected to the first driving element 211, so that the first driving element 211 can drive the first friction plate 2213 to move along the adjustment direction.

[0208] The first driving element 211 and the first friction plate 2213 are disposed within the first pre-pressure device 2301. The clamping action of the first pre-pressure device 2301 presses the first driving element 211 and the first friction plate 2213 together. That is, the first pre-pressure device 2301 provides a pre-pressure along a friction surface perpendicular to the first friction plate 2213, maintaining frictional contact between the first driving element 211 and the first friction plate 2213. Furthermore, due to the presence of the pre-pressure, the friction driving part 214 of the first driving element 211 remains on the friction surface of the first friction plate 2213, thereby ensuring that the driving force generated by the first driving element 211 is uniform across the first friction plate 2213. Moreover, in this application, the movement of the first friction plate 2213 is driven by the frictional force on the friction surface, resulting in smoother movement of the first friction plate 2213.

[0209] Taking the first driving element 211 disposed on the upper part of the first friction plate 2213 as an example, the piezoelectric ceramic plate 213 of the first driving element 211 can be fixed with the first pre-pressure device 2301, and the friction driving part 214 of the first driving element 211 faces the first friction plate 2213 and maintains frictional contact with the upper friction surface of the first friction plate 2213.

[0210] In some embodiments, to reduce the friction between the first friction plate 2213 and the first pre-pressure device 2301, a first friction mechanism 2151 can be provided between the first pre-pressure device 2301 and the first friction plate 2213, such that the first friction plate 2213 and the first pre-pressure device 2301 are movably connected through the first friction mechanism 2151, wherein the first pre-pressure device 2301 presses the first friction mechanism 2151 against the first friction plate 2213. Specifically, a first driving element 211 is provided on one side of the first friction plate 2213, and the first friction mechanism 2151 is provided on the opposite side of the first friction plate 2213, such that the first friction plate 2213 is clamped between the first driving element 211 and the first friction mechanism 2151 under the action of the first pre-pressure device 2301, allowing the first friction plate 2213 to move along the adjustment direction under the driving action of the first driving element 211. Thus, point friction is used instead of surface friction to reduce the friction between the first friction plate 2213 and the first pre-pressure device 2301.

[0211] In some embodiments of this application, the first friction mechanism 2151 includes a groove or roller track constructed on the first pre-pressure device 2301 and / or the first friction plate 2213, and balls or sliders arranged in the groove or roller track. By providing a groove or track along the optical axis or adjustment direction between the friction surfaces of the first pre-pressure device 2301 and the first friction plate 2213, and providing balls in the groove or track, the first friction plate 2213 can move along the optical axis or adjustment direction under the clamping of the friction drive part 214 and the balls. The first drive element 211 and the first friction mechanism 2151 can be arranged opposite to each other along the first friction plate 2213.

[0212] In the case of a first carrier 221 and a second carrier 222, the structure and features described above in conjunction with the first carrier 221 and its related components also apply to the second carrier 222 and its related components, as detailed in the following description.

[0213] and Figure 13 Correspondingly, Figure 14 This is a schematic side view of a second carrier 222 according to some embodiments of this application, including an assembled second friction plate 2223, a second driving element 212, and a second friction mechanism 2152. The second driving element 212, also referred to as a focusing driving element 212, includes a piezoelectric plate 213 and a friction driving part 214 fixed on the piezoelectric plate. The friction driving part 214 of the second driving element 212 is in frictional contact with the second friction plate 2223. After the second driving element 212 is powered, the piezoelectric ceramic plate 213 of the second driving element 212 produces a traveling wave-like surface change, thereby driving the friction driving part 214 of the second driving element 212 to produce a unidirectional oscillating reciprocating motion along the optical axis or along the adjustment direction. Due to the frictional contact between the friction driving part 214 of the second driving element 212 and the second friction plate 2223, the second friction plate 2223 is moved along the optical axis or along the adjustment direction.

[0214] Specifically, when the second driving element 212 is excited, the friction driving part 214 of the second driving element 212 comes into frictional contact with the second friction plate 2223, and the piezoelectric ceramic plate 213 of the second driving element 212 generates a traveling wave-like surface shape change. Under the drive, the friction driving part 214 of the second driving element 212 yaws along the optical axis or along the adjustment direction, thereby driving the second friction plate 2223 to move along the optical axis or along the adjustment direction.

[0215] After one motion cycle is completed, the piezoelectric ceramic plate 213 of the second driving element 212 is lifted, separating it from the second friction plate 2223 via the friction driving part 214 of the second driving element 212. The friction driving part 214 then re-engages with the second friction plate 2223. Driven by the piezoelectric ceramic plate 213, the friction driving part 214 of the second driving element 212 is repositioned and yaws again along the optical axis or the adjustment direction, thereby driving the second friction plate 2223 to continue moving along the optical axis or the adjustment direction. This process is the same as the process described above in conjunction with the first driving element 211.

[0216] In this application, the second driving element 212 can be disposed on the upper or lower part of the second friction plate 2223. That is, the friction driving part 214 of the second driving element 212 can make frictional contact with the upper friction surface of the second friction plate 2223 or with the lower friction surface of the second friction plate 2223. Therefore, the second driving element 212 can be used to provide a driving force to move the second carrier 222 along the adjustment direction. The second friction plate 2223 can be disposed between the carrier body 2221 of the second carrier 222 and the second driving element 212, wherein one end of the second friction plate 2223 is fixedly connected to the carrier body 2221 of the second carrier 222, and the other end is operatively connected to the second driving element 212, so that the second driving element 212 can drive the second friction plate 2223 to move along the adjustment direction.

[0217] The second driving element 212 and the second friction plate 2223 are disposed within the second pre-pressure device 2302. The clamping action of the second pre-pressure device 2302 presses the second driving element 212 and the second friction plate 2223 together. That is, the second pre-pressure device 2302 provides a pre-pressure along a friction surface perpendicular to the second friction plate 2223, maintaining frictional contact between the second driving element 212 and the second friction plate 2223. Furthermore, due to the presence of the pre-pressure, the friction driving part 214 of the second driving element 212 remains on the friction surface of the second friction plate 2223, thereby ensuring that the driving force generated by the second driving element 212 is uniform across the second friction plate 2223. Moreover, in this application, the movement of the second friction plate 2223 is driven by the frictional force on the friction surface, resulting in smoother movement of the second friction plate 2223.

[0218] Taking the second driving element 212 as an example, which is disposed on the upper part of the second friction plate 2223, the piezoelectric ceramic plate 213 of the second driving element 212 is fixed with the second pre-pressure device 2302, and the friction driving part 214 of the second driving element 212 faces the second friction plate 2223 and maintains frictional contact with the upper friction surface of the second friction plate 2223.

[0219] In some embodiments, to reduce the friction between the second friction plate 2223 and the second pre-pressure device 2302, a second friction mechanism 2152 can be provided between the second pre-pressure device 2302 and the second friction plate 2223, such that the second friction plate 2223 and the second pre-pressure device 2302 are movably connected through the second friction mechanism 2152, wherein the second pre-pressure device 2302 presses the second friction mechanism 2152 against the second friction plate 2223. Specifically, a second driving element 212 is provided on one side of the second friction plate 2223, and a second friction mechanism 2152 is provided on the opposite side of the second friction plate 2223, such that the second friction plate 2223 is clamped between the second driving element 212 and the second friction mechanism 2152 under the action of the second pre-pressure device 2302, allowing the second friction plate 2223 to move along the adjustment direction under the driving action of the second driving element 212. Thus, point friction replaces surface friction to reduce the friction between the second friction plate 2223 and the second pre-pressure device 2302.

[0220] In some embodiments of this application, the second friction mechanism 2152 includes a groove or roller track constructed on the second pre-pressure device 2302 and / or the second friction plate 2223, and balls or sliders arranged in the groove or roller track. By providing a groove or track along the optical axis or adjustment direction between the friction surfaces of the second pre-pressure device 2302 and the second friction plate 2223, and by providing balls in the groove or track, the second friction plate 2223 can move along the optical axis or adjustment direction under the clamping of the friction drive part 214 and the balls. The second drive element 212 and the second friction mechanism 2152 can be arranged opposite to each other along the second friction plate 2223.

[0221] Here, the first friction mechanism 2151 and the second friction mechanism 2152 can be constructed to be identical, that is, both include grooves or roller tracks constructed on the respective pre-pressure device and / or friction plate, and balls or sliders arranged in the grooves or roller tracks.

[0222] Figure 22a This is an axial view of a drive assembly according to some embodiments of this application, wherein each friction plate is equipped with a drive element and a friction mechanism. Figure 22aAs shown, the first driving element 211 and the first friction mechanism 2151 are disposed on the same side of the driving assembly 20, wherein the first driving element 211 and the first friction mechanism 2151 are disposed opposite to each other along the first friction plate 2213, and both the first driving element 211 and the first friction mechanism 2151 are in frictional contact with the first friction plate 2213.

[0223] The second driving element 212 and the second friction mechanism 2152 are disposed on the same side of the driving assembly 20, wherein the second driving element 212 and the second friction mechanism 2152 are disposed opposite to each other along the second friction plate 2223, and both the second driving element 212 and the second friction mechanism 2152 are in frictional contact with the second friction plate 2223.

[0224] The first driving element 211 and the first friction mechanism 2151 are disposed on the first side of the driving assembly 20, and the second driving element 212 and the second friction mechanism 2152 are disposed on the second side of the driving assembly 20. The first side and the second side of the driving assembly 20 are opposite to each other along the optical axis or along the adjustment direction.

[0225] The first driving element 211 and the first friction mechanism 2151 as a whole are centrally symmetrical with the second driving element 212 and the second friction mechanism 2152 as a whole when viewed along the optical axis or the adjustment direction. The first driving element 211 and the second driving element 212 are centrally symmetrical when viewed along the optical axis or the adjustment direction, and the first friction mechanism 2151 and the second friction mechanism 2152 are centrally symmetrical when viewed along the optical axis or the adjustment direction.

[0226] exist Figure 22a From the -b perspective, the optical axis direction, or adjustment direction, is represented by a point at the geometric center of the drive carrier, which is also the point of central symmetry mentioned above. Furthermore, the first carrier 221 and the second carrier 222 are arranged sequentially on the same axis along the adjustment direction and can move independently of each other along the adjustment direction. This axis coincides with the optical axis and is parallel to the adjustment direction, therefore it is also represented as a point in the view. The first drive element 211 and the second drive element 212 are centrally symmetrical with respect to this point. In other words, the observation along the optical axis direction, or the adjustment direction, refers to the observation along the adjustment direction of the drive carrier. Generally, the first carrier 221 and the second carrier 222 are arranged sequentially on the same axis along the adjustment direction, and this common axis is the same as the optical axis or the adjustment direction of the drive carrier. Observing along the adjustment direction of the drive carrier, the adjustment direction is represented as a point, i.e., the point of central symmetry. This description of central symmetry also applies to other parts of the specification describing the centrally symmetrical arrangement of components.

[0227] Similarly, the first friction mechanism 2151 and the second friction mechanism 2152 are also centrally symmetrical when viewed along the axis. Optionally, the first friction mechanism 2151 and the second friction mechanism 2152 are constructed as standard parts with identical structures.

[0228] In this application, the first driving element 211 and the second driving element 212 are arranged in a centrally symmetrical manner when viewed along the optical axis or the adjustment direction. This allows the first driving element 211 and the second driving element 212 to have the same structure, thus enabling them to be configured as standard components. This arrangement simplifies the structural design of the zoom camera module, making it easier to simplify its structure. In other words, the first driving element 211 and the second driving element 212 can be constructed as standard components with identical structures.

[0229] In particular, the first structural unit formed by the first driving element 211 and the first friction mechanism 2151, and the second structural unit formed by the second driving element 212 and the second friction mechanism 2152, can form a standard structural unit with the same structure, and the first and second structural units can also be arranged in a centrally symmetrical manner when viewed along the axis. Figure 22a As shown, the first driving element 211 can be disposed at the lower part of the first friction plate 2213, and the first friction mechanism 2151 is disposed at the upper part of the first friction plate 2213 opposite to it; the second driving element 212 can be disposed at the upper part of the second friction plate 2223, and the second friction mechanism 2152 is disposed at the lower part of the second friction plate 2223 opposite to it. Of course, it is also possible to interchange the positions of the first driving element 211 and the first friction mechanism 2151, and similarly interchange the positions of the second driving element 212 and the second friction mechanism 2152.

[0230] Figure 22b This is an axial view of the drive assembly 20 according to other embodiments of this application, wherein a drive element is provided on each of the two opposite sides of each friction plate, such that the friction plate is clamped between the two drive elements and can move along the adjustment direction under the cooperative driving action of the two drive elements.

[0231] Specifically, such as Figure 15 and Figure 22bAs shown, the first driving element includes a first upper driving element 2111 and a first lower driving element 2112, wherein the first upper driving element 2111 and the first lower driving element 2112 are located on the same side of the driving assembly 20, and the first upper driving element 2111 and the first lower driving element 2112 are arranged opposite to each other on both sides of the first friction plate 2213. The first upper driving element 2111 and the first lower driving element 2112 can be identically constructed as piezoelectric actuators.

[0232] It should be noted that in this application, the terms "upper" and "lower" are only used to distinguish similar components by name, and do not necessarily represent the actual location of the components, but only express their relative positional relationship. That is, names with the prefixes "upper" and "lower" represent components that are relative to each other based on the friction plates. For example, the first upper driving element 2111 and the first lower driving element 2112 are relative to each other based on the first friction plate 2213, that is, they are located on opposite sides of the first friction plate 2213.

[0233] The first upper driving element 2111 includes a first piezoelectric ceramic plate 21111 and a first friction driving part 21112, and the first lower driving element 2112 includes a second piezoelectric ceramic plate 21121 and a second friction driving part 21122. The first friction plate 2213 is clamped by the first friction driving part 21112 of the first upper driving element 2111 and the second friction driving part 21122 of the first lower driving element 2112. By having the first friction driving part 21112 and the second friction driving part 21122 work together on both sides to drive the first friction plate 2213, the first carrier 221 moves along the optical axis direction or the adjustment direction.

[0234] The first upper driving element 2111 and the first lower driving element 2112 are disposed within the first pre-pressure device 2301. The clamping action of the first pre-pressure device 2301 presses the first upper driving element 2111, the first lower driving element 2112, and the first friction plate 2213 together. That is, the first pre-pressure device 2301 provides a pre-pressure along a friction surface perpendicular to the first friction plate 2213, and maintains simultaneous frictional contact between the first upper driving element 2111 and the first lower driving element 2112 and the first friction driving part 21122 of the first upper driving element 2111 and the first lower driving element 2112, perpendicular to the friction surface of the first friction plate 2213. This arrangement allows the first upper driving element 2111 and the first lower driving element 2112 to simultaneously drive the first friction plate 2213, providing greater thrust for the movement of the first carrier 221, thereby generating a larger travel distance, with a maximum travel distance of 7 mm.

[0235] Furthermore, the structure in which the first friction plate 2213 is clamped by the first upper driving element 2111 and the first lower driving element 2112 ensures that the first carrier 221 remains stable within the driving assembly 20, avoiding the risk of swaying. The direction of the clamping force generated by the first upper driving element 2111 and the first lower driving element 2112 is perpendicular to the direction of the driving force.

[0236] Specifically, the first piezoelectric ceramic plate 21111 of the first upper driving element 2111 is fixedly connected to the first pre-pressure device 2301, and the first friction driving part 21112 of the first upper driving element 2111 makes frictional contact with the upper (lower) friction surface of the first friction plate 2213 under the action of pre-pressure; the second piezoelectric ceramic plate 21121 of the first lower driving element 2112 is fixedly connected to the first pre-pressure device 2301, and the second friction driving part 21122 of the first lower driving element 2112 makes frictional contact with the lower (upper) friction surface of the first friction plate 2213 under the action of pre-pressure, so that the first friction plate 2213 can move along the optical axis direction or along the adjustment direction under the combined action of the first friction driving part 21112 and the second friction driving part 21122.

[0237] Since the driving force of the first upper driving element 2111 and the first lower driving element 2112 is transmitted to the first friction plate 2213 through friction, the first friction plate 2213 is driven to move, and this process does not affect the piezoelectric actuator, thus extending the service life of the piezoelectric actuator.

[0238] The first upper driving element 2111 and the first lower driving element 2112 can be controlled separately, making debugging during the driving process simpler. After providing the same power excitation to the first upper driving element 2111 and the first lower driving element 2112, the first piezoelectric ceramic plate 21111 of the first upper driving element 2111 and the second piezoelectric ceramic plate 21121 of the first lower driving element 2112 produce a surface shape change in a traveling wave state symmetrical to the friction surface, thereby driving the first friction driving part 21112 of the first upper driving element 2111 and the second friction driving part 21122 of the first lower driving element 2112 to produce synchronous unidirectional yaw reciprocating motion.

[0239] Specifically, when the first upper driving element 2111 and the first lower driving element 2112 are excited, the first friction driving part 21112 of the first upper driving element 2111 and the second friction driving part 21122 of the first lower driving element 2112 both make frictional contact with the first friction plate 2213. The first piezoelectric ceramic plate 21111 of the first upper driving element 2111 and the second piezoelectric ceramic plate 21121 of the first lower driving element 2112 produce the same traveling wave state surface shape change. The first friction driving part 21112 of the first upper driving element 2111 and the second friction driving part 21122 of the first lower driving element 2112 are driven to yaw along the optical axis direction or the adjustment direction, thereby driving the first friction plate 2213 of the first carrier 221 to move along the optical axis direction or the adjustment direction.

[0240] After one motion cycle is completed, the first piezoelectric ceramic plate 21111 of the first upper driving element 2111 and the second piezoelectric ceramic plate 21121 of the first lower driving element 2112 are lifted, separating from the first friction driving part 21112 of the first upper driving element 2111 and the second friction driving part 21122 of the first lower driving element 2112. The first friction driving part 21112 of the first upper driving element 2111 and the second friction driving part 21122 of the first lower driving element 2112 then come into frictional contact with the first friction plate 2213 again. The first friction driving part 21112 of the first upper driving element 2111 and the second friction driving part 21122 of the first lower driving element 2112 are repositioned under the drive of the first piezoelectric ceramic plate 21111 and the second piezoelectric ceramic plate 21121, respectively, and then yaw again along the optical axis or the adjustment direction, thereby driving the first friction plate 2213 to continue moving along the optical axis or the adjustment direction.

[0241] Since the first upper driving element 2111 and the first lower driving element 2112 have the same vibration frequency, the probability of interference is reduced. Furthermore, after the applied voltage stops, the first upper driving element 2111 and the first lower driving element 2112 can form a self-locking structure, holding the first friction plate 2213 and the first carrier 221 in their current positions, preventing positional changes due to external shaking. This ensures that the optical system of the zoom camera module 100 remains unchanged, thus avoiding any impact on the imaging effect. It also eliminates the need to add a self-locking device to the zoom camera module 100, relatively reducing the size of the zoom camera module 100. Because of the self-locking structure formed by the first upper driving element 2111 and the first lower driving element 2112, it is unnecessary to keep the piezoelectric actuator active to maintain its position.

[0242] like Figure 17 and Figure 22bAs shown, the second driving element 212 includes a second upper driving element 2121 and a second lower driving element 2122, wherein the second upper driving element 2121 and the second lower driving element 2122 are located on the same side of the driving assembly 20, and the second upper driving element 2121 and the second lower driving element 2122 are symmetrically arranged relative to the second friction plate 2223.

[0243] The second upper driving element 2121 includes a third piezoelectric ceramic plate 21212 and a third friction driving part 21211, and the second lower driving element 2122 includes a fourth piezoelectric ceramic plate 21222 and a fourth friction driving part 21221. The second friction plate 2223 is clamped by the third friction driving part 21211 of the second upper driving element 2121 and the fourth friction driving part 21221 of the second lower driving element 2122. The second carrier 222 moves along the optical axis direction or the adjustment direction through the coordinated driving of the third friction driving part 21211 of the second upper driving element 2121 and the fourth friction driving part 21221 of the second lower driving element 2122.

[0244] The second upper driving element 2121 and the second lower driving element 2122 are disposed within the second pre-pressure device 2302. The clamping action of the second pre-pressure device 2302 presses the second upper driving element 2121 and the second lower driving element 2122 together with the second friction plate 2223. That is, the second pre-pressure device 2302 provides a pre-pressure along a friction surface perpendicular to the second friction plate 2223, and the second pre-pressure device 2302 can maintain the second upper driving element 2121 and the second lower driving element 2122 in simultaneous frictional contact with the second friction plate 2223.

[0245] The line connecting the third friction drive portion 21211 of the second upper drive element 2121 and the fourth friction drive portion 21221 of the second lower drive element 2122 is perpendicular to the friction surface of the second friction plate 2223. This arrangement allows the second upper drive element 2121 and the second lower drive element 2122 to simultaneously drive the second friction plate 2223, providing greater thrust for the movement of the second carrier 222, thereby generating a larger travel distance, with a maximum travel distance of 7mm.

[0246] Furthermore, the structure in which the second friction plate 2223 is clamped by the second upper driving element 2121 and the second lower driving element 2122 ensures that the second carrier 222 remains stable within the driving assembly 20, avoiding the risk of swaying. The direction of the clamping force generated by the second upper driving element 2121 and the second lower driving element 2122 is perpendicular to the direction of the driving force.

[0247] Specifically, the third piezoelectric ceramic plate 21212 of the second upper driving element 2121 is fixedly connected to the second pre-pressure device 2302, and the third friction driving part 21211 of the second upper driving element 2121 and the upper (lower) friction surface of the second friction plate 2223 are in frictional contact under the action of pre-pressure; the fourth piezoelectric ceramic plate 21222 of the second lower driving element 2122 is fixedly connected to the second pre-pressure device 2302, and the fourth friction driving part 21221 of the second lower driving element 2122 and the lower (upper) friction surface of the second friction plate 2223 are in frictional contact under the action of pre-pressure, and the second friction plate 2223 can move along the optical axis direction or the adjustment direction under the synergistic action of the third friction driving part 21211 of the second upper driving element 2121 and the fourth friction driving part 21221 of the second lower driving element 2122.

[0248] Since the driving force of the second upper driving element 2121 and the second lower driving element 2122 is transmitted to the second friction plate 2223 through friction, the second friction plate 2223 is driven to move, and this process does not affect the piezoelectric actuator, thus extending the service life of the piezoelectric actuator.

[0249] The second upper driving element 2121 and the second lower driving element 2122 can be controlled separately, making debugging during the driving process simpler. After providing the same power excitation to the second upper driving element 2121 and the second lower driving element 2122, the third piezoelectric ceramic plate 21212 of the second upper driving element 2121 and the fourth piezoelectric ceramic plate 21222 of the second lower driving element 2122 generate a surface shape change in a traveling wave state symmetrical to the friction surface, thereby driving the third friction driving part 21211 of the second upper driving element 2121 and the fourth friction driving part 21221 of the second lower driving element 2122 to generate synchronous unidirectional yaw reciprocating motion.

[0250] Since the second upper driving element 2121 and the second lower driving element 2122 have the same vibration frequency, the probability of interference is reduced. Furthermore, after the applied voltage stops, the second upper driving element 2121 and the second lower driving element 2122 can form a self-locking structure, holding the second friction plate 2223 and the second carrier 222 in their current positions without changing position due to external shaking. This ensures that the optical system of the zoom camera module 100 remains unchanged, thus avoiding any impact on the imaging effect. It also eliminates the need to add a self-locking device to the zoom camera module 100, relatively reducing the size of the zoom camera module 100. Because of the self-locking structure formed by the second upper driving element 2121 and the second lower driving element 2122, it is not necessary to keep the piezoelectric actuator active to maintain its position.

[0251] likeFigure 22a As shown in -b, the first driving element 211 and the second driving element 212 are respectively disposed on the opposite first side and the second side of the zoom lens group 10, and the first side and the second side are opposite to each other with respect to the common axis of the first carrier and the second carrier.

[0252] In some embodiments of this application, such as Figure 22b As shown, the overall height h of the first upper driving element 2111, the first lower driving element 2112, and the first friction plate 2213 sandwiched between the first upper driving element 2111 and the first lower driving element 2112 is not greater than the overall height of the carrier body 2211 of the first carrier 221, especially not greater than the maximum height of the lens group. Furthermore, the overall height h of the second upper driving element 2121, the second lower driving element 2122, and the second friction plate 2223 sandwiched between the second upper driving element 2121 and the second lower driving element 2122 is not greater than the overall height of the carrier body 2221 of the second carrier 222, especially not greater than the maximum height of the lens group.

[0253] In other embodiments of this application, such as Figure 22a As shown, the overall height h of the first driving element 211, the first friction mechanism 2151, and the first friction plate 2213 sandwiched between the first driving element 211 and the first friction mechanism 2151 is not greater than the overall height of the carrier body 2211 of the first carrier 221, especially not greater than the maximum height of the lens group. Similarly, the overall height h of the second driving element 212, the second friction mechanism 2152, and the second friction plate 2223 sandwiched between the second driving element 212 and the second friction mechanism 2152 is not greater than the overall height of the carrier body 2221 of the second carrier 222, especially not greater than the maximum height of the lens group.

[0254] It should be noted that, for the drive assembly 20 used to drive the lens, the adjustable group is usually installed in the receiving cavity of the carrier body of the drive carrier. Therefore, the aforementioned maximum height of the carrier body of the drive carrier is not greater than that of the drive carrier, which ensures that the overall structural height is not greater than or substantially not significantly greater than the maximum height of the lens group. This advantageously reduces the structural height of the entire camera module.

[0255] It should also be noted that the height h here refers to the structural dimension formed by the first upper driving element 2111, the first lower driving element 2112, and the first friction plate 2213 sandwiched between the first upper driving element 2111 and the first lower driving element 2112 in the superposition direction. Figure 22b The height is represented by h. The definition of height here also applies to... Figure 22a The illustrated embodiment.

[0256] Since it is difficult to reduce the height of the zoom lens group 10 in the zoom camera module 100, this application avoids further increasing the height of the zoom camera module 100 based on the height of the zoom lens group 10.

[0257] In some embodiments, such as Figures 18-19 As shown, the first pre-pressure device 2301 and the second pre-pressure device 2302 respectively include an upper clamping part 231, a lower clamping part 233 and a connecting part 232 connecting the upper clamping part 231 and the lower clamping part 233.

[0258] The first pre-pressure device 2301 can elastically clamp the first friction plate 2213 and the first driving element 211 and the first friction mechanism 2151 (or the first upper driving element 2111 and the first lower driving element 2112 arranged on both sides of the first friction plate 2213) between the upper clamping part 231 and the lower clamping part 233 of the first pre-pressure device 2301. The clamping force between the upper clamping part 231 and the lower clamping part 233 keeps the first driving element 211 and the first friction mechanism 2151 (or the first upper driving element 2111 and the first lower driving element 2112) in frictional contact with the first friction plate 2213, so that the driving element can drive the first friction plate 2213 to move, thereby driving the first carrier 221 to move.

[0259] As an example, in an embodiment where a first upper driving element 2111 and a first lower driving element 2112 are arranged on both sides of the first friction plate 2213, the upper clamping part 231 of the first pre-pressure device 2301 can be connected to the first piezoelectric ceramic plate 21111 of the first upper driving element 2111, and the lower clamping part 233 of the first pre-pressure device 2301 can be connected to the second piezoelectric ceramic plate 21121 of the first lower driving element 2112. Thus, the first friction driving part 21112 of the first upper driving element 2111 and the second friction driving part 21122 of the first lower driving element 2112 both press against the first friction plate 2213, and the clamping force between the upper clamping part 231 and the lower clamping part 233 of the first pre-pressure device 2301 keeps the first friction driving part 21112 of the first upper driving element 2111 and the second friction driving part 21122 of the first lower driving element 2112 in frictional contact with the first friction plate 2213.

[0260] Corresponding to the first pre-pressure device 2301 described above, the second pre-pressure device 2302 can elastically clamp the second friction plate 2223 and the second driving element 212 and the second friction mechanism 2152 (or the second upper driving element 2121 and the second lower driving element 2122 arranged on both sides of the second friction plate 2223) between the upper clamping part 231 and the lower clamping part 233 of the second pre-pressure device 2302. The clamping force between the upper clamping part 231 and the lower clamping part 233 keeps the second driving element 212 and the second friction mechanism 2152 (or the second upper driving element 2121 and the second lower driving element 2122) in frictional contact with the second friction plate 2223, so that the driving element can drive the second friction plate 2223 to move, thereby driving the second carrier 222 to move. The structure and features described above in conjunction with the first pre-pressure device 2301 are similarly applicable to the second pre-pressure device 2302, and will not be repeated here.

[0261] The first pre-pressure device 2301 and the second pre-pressure device 2302 are respectively disposed on the first side and the second side of the drive assembly 20, wherein the first side and the second side of the drive assembly 20 are opposite to each other based on the optical axis. Similarly, the first pre-pressure device 2301 acts on the first drive element 211, and the second pre-pressure device 2302 acts on the second drive element 212, so that the first drive element 211 can be in close contact with the first friction plate 2213 under the action of the first pre-pressure device 2301 to maintain friction, and the second drive element 212 can be in close contact with the second friction plate 2223 under the action of the second pre-pressure device 2302 to maintain friction.

[0262] The first pre-pressure device 2301 and the second pre-pressure device 2302 can have the same structure, for example, they can be steel plates with a certain elasticity, and provide a certain pre-pressure to the drive element 21 through the elasticity between the upper clamp 231 and the lower clamp 233.

[0263] In some embodiments of this application, such as Figure 21 and Figure 22a As shown, a first driving substrate 271 is disposed between the first pre-pressure device 2301 and the first driving element 211. The first driving substrate 271 is electrically connected to the first driving element 211 and is used to supply current to the first driving element 211. The first driving substrate 271 is clamped onto the first driving element 211 by the first pre-pressure device 2301.

[0264] A second driving substrate 272 is disposed between the second pre-pressure device 2302 and the second driving element 212. The second driving substrate 272 is electrically connected to the second driving element 212 and is used to supply current to the second driving element 212. The second driving substrate 272 is clamped on the second driving element 212 by the second pre-pressure device 2302.

[0265] Figure 20 This is a perspective view of a driving substrate according to some embodiments of this application. (See attached image) Figure 20 As shown, the driving substrate 27 includes a first driving substrate 271 and a second driving substrate 272. The first driving substrate 271 and the second driving substrate 272 are electrically connected to the first driving element 211 (zoom driving element 211) and the second driving element 212 (focus driving element 212), respectively, to realize the circuit conduction of the driving assembly 20. Therefore, the first driving substrate 271 can also be called the zoom substrate 271, and the second driving substrate 272 can also be called the focus substrate 272.

[0266] like Figure 21 As shown, as an example, the first driving substrate 271 can be disposed between the first pre-pressure device 2301 and the first driving element 211. The first driving substrate 271 is clamped onto the first driving element 211 by the first pre-pressure device 2301, so that the first driving substrate 271 is electrically connected to the piezoelectric ceramic plate of the piezoelectric element. The second driving substrate 272 can be disposed between the second pre-pressure device 2302 and the second driving element 212. The second driving substrate 272 is clamped onto the second driving element 212 by the second pre-pressure device 2302, so that the second driving substrate 272 is electrically connected to the piezoelectric ceramic plate of the piezoelectric element.

[0267] The first driving substrate 271 and the second driving substrate 272 can be disposed on the first and second sides of the driving component 20 opposite to each other along the optical axis.

[0268] In some embodiments, such as Figure 20 As shown, the first driving substrate 271 includes a first conductive terminal 2711, a second conductive terminal 2712, and a connecting strip 2713 connecting the first conductive terminal 2711 and the second conductive terminal 2712. See, for example, the attached diagram. Figure 22b The first conductive end 2711 of the first driving substrate 271 can be clamped on the first upper driving element 2111 by the upper clamping part 231 of the first pre-pressure device 2301, and the second conductive end 2712 of the first driving substrate 271 can be clamped on the first lower driving element 2112 by the lower clamping part 233 of the first pre-pressure device 2301.

[0269] Similarly, the second driving substrate 272 includes a third conductive end 2721, a fourth conductive end 2722, and a connecting strip 2723 connecting the third conductive end 2721 and the fourth conductive end 2722. The third conductive end 2721 of the second driving substrate 272 is clamped on the second lower driving element 2122 by the lower clamping part 233 of the second pre-pressure device 2302, and the fourth conductive end 2722 of the second driving substrate 272 is clamped on the second upper driving element 2121 by the upper clamping part 231 of the second pre-pressure device.

[0270] Specifically, the first conductive end 2711 of the first driving substrate 271 is mounted on the first piezoelectric ceramic plate 21111 of the first upper driving element 2111 via the upper clamping portion 231 of the first pre-pressure device 2301, and the second conductive end 2712 of the first driving substrate 271 is mounted on the second piezoelectric ceramic plate 21121 of the first lower driving element 2112 via the lower clamping portion 233 of the first pre-pressure device 2301. The second conductive end 2712 of the first driving substrate 271 extends in the direction toward the photosensitive component 30 to be electrically connected to the circuit board 31. The corresponding structure also applies to the second driving substrate 272, and will not be described further here.

[0271] like Figure 22a As shown in -b, the second conductive end 2712 of the first driving substrate 271 is also provided with a first extension 27121. The first extension 27121 extends inward (towards the optical axis) and is opposite to the first guide rod 241 based on the plane of the first friction plate 2213. That is, when the first guide rod 241 is disposed above the first carrier 221 and the first extension 27121 is disposed below the first friction plate 2213, the first guide rod 241 and the first extension 27121 are opposite to each other based on the first friction plate 2213, so as to make full use of the spatial position of the driving component 20, which is beneficial to the integration of the variable zoom camera module 100.

[0272] Furthermore, a position sensing element 28 may be provided on the first extension 27121, and a sensing magnet may be provided on the first friction plate 2213 at a position opposite to the position sensing element 28. The position sensing element 28 detects changes in the position of the sensing magnet. Of course, in this application, after sensing the movement of the sensing magnet, the movement information may be further transmitted to a processing element, which then judges and processes the movement information of the moving carrier to form a closed-loop structure. The position sensing element 28 may be a Hall element, an integration of a driver IC and a Hall element, or other position sensing elements 28.

[0273] The first extension 27121 of the second conductive end 2712 and the body of the second conductive end 2712 can have a certain height difference, that is, the first extension 27121 can be lower than the body of the second conductive end 2712, or the first extension 27121 is offset in a direction away from the first carrier 221, so as to provide a certain moving space for the sensing magnet and the position sensing element 28.

[0274] Similar to the structure of the first driving substrate 271, the third conductive end 2721 of the second driving substrate 272 is placed on the fourth piezoelectric ceramic plate 21222 of the second lower driving element 2122 through the lower clamping portion 233 of the pre-pressure device 23, and the fourth conductive end 2722 of the second driving substrate 272 is placed on the third piezoelectric ceramic plate 21212 of the second upper driving element 2121 through the upper clamping portion 231 of the pre-pressure device 23, and the fourth conductive end 2722 extends in the direction toward the photosensitive component 30 to be electrically connected to the circuit board 31.

[0275] Furthermore, the fourth conductive end 2722 is also provided with a second extension 27221, which extends inward (towards the optical axis) and is opposite to the second guide rod 242 based on the plane of the second friction plate 2223. That is, when the second guide rod 242 is located below the second carrier 222 and the second extension 27221 is located above the second friction plate 2223, the second guide rod 242 and the second extension 27221 are opposite to each other based on the second friction plate 2223. That is, the second guide rod 242 and the second extension 27221 are symmetrically arranged based on the second friction plate 2223, so as to make full use of the spatial position of the driving component 20 and facilitate the integration of the variable focus camera module 100.

[0276] Furthermore, a position sensing element 28 can be disposed on the second extension 27221 of the second driving substrate 272, and a sensing magnet is disposed on the second friction plate 2223 at a position opposite to the position sensing element 28. The position sensing element 28 detects the position change of the sensing magnet. Of course, in this application, after the movement of the sensing magnet is sensed, the movement information can be further transmitted to a processing element, and the processing element can judge and process the movement information of the moving carrier to form a closed-loop structure. The position sensing element 28 can be a Hall element, an integration of a driving IC and a Hall element, or other position sensing elements 28.

[0277] The second extension 27221 of the fourth conductive terminal 2722 and the body of the fourth conductive terminal 2722 may have a certain height difference, that is, the second extension 27221 may be higher than the body of the fourth conductive terminal 2722, or the second extension 27221 may be offset in a direction away from the second carrier 222, so as to provide a certain moving space for the sensing magnet and the position sensing element 28.

[0278] In some embodiments, the first driving substrate 271 and the second driving substrate 272 are centrally symmetrical when viewed along the optical axis or when viewed along the adjustment direction. This not only simplifies the structural design of the driving substrate 27, but also allows for coordination with other components in the driving assembly 20, providing some clearance space for other components and making the structure of the driving assembly 20 more compact.

[0279] In some embodiments, such as Figures 23-24 As shown, in the case of including the first carrier 221 and the second carrier 222, the drive component 20 may also include the first carrier mechanism 2501 and the second carrier mechanism 2502.

[0280] The first load-bearing mechanism 2501 and the second load-bearing mechanism 2502 can be constructed with the same structural form. Figure 24 In the first bearing mechanism 2501 and the second bearing mechanism 2502, there are multiple positioning posts 251 forming a placement space, and in particular, there are four positioning posts 251 arranged at the four corners of a rectangle.

[0281] The first driving element 211 is disposed in the placement space of the first bearing mechanism 2501 under the clamping of the first pre-pressure device 2301, and the first conductive end 2711 and the second conductive end 2712 of the first driving substrate 271 are respectively fixed on the positioning post 251 of the first bearing mechanism 2501 outside the placement space of the first bearing mechanism 2501.

[0282] Similarly, the second driving element 212 is disposed in the placement space of the second bearing mechanism 2502 under the clamping of the second pre-pressure device 2302, and the third conductive end 2721 and the fourth conductive end 2722 of the second driving substrate 272 are respectively fixed on the positioning post 251 of the second bearing mechanism 2502 outside the placement space of the second bearing mechanism 2502.

[0283] The first bearing mechanism 2501 is disposed between the first pre-pressure device 2301 and the drive housing 26, so as to fix the first drive element 211 to the drive housing 26 through the first bearing mechanism 2501.

[0284] The first driving element 211 is clamped within the first bearing mechanism 2501 by the first preload device 2301, and the first bearing mechanism 2501 provides certain support and fixation for the first driving element 211. Similarly, the second driving element 212 is clamped within the second bearing mechanism 2502 by the second preload device 2302, and the second bearing mechanism 2502 provides certain support and fixation for the second driving element 212.

[0285] The following section uses the load-bearing mechanism 25 as an example, combined with... Figure 24 This describes the structure and arrangement of the load-bearing mechanism, which also applies to the first load-bearing mechanism 2501 and the second load-bearing mechanism 2502.

[0286] The support mechanism 25 may include, for example, a rectangular body and a plurality of positioning posts 251 extending from the body. In the installed state, the positioning posts extend toward, for example, the optical axis or toward the carrier body of the drive carrier 22. The plurality of positioning posts 251 form a U-shaped opening for placement.

[0287] Specifically, such as Figure 24 As shown, the support mechanism 25 is provided with, for example, four positioning posts 251. The drive base plate 27 can be disposed on the four positioning posts of the support mechanism 25, and the drive base plate 27 is electrically connected to the drive element 21. The support mechanism 25 can provide the drive base plate 27 with a mounting surface with good flatness.

[0288] Specifically, the first and second conductive ends of the driving substrate 27 can be fixed to the four positioning posts 251 of the bearing mechanism 25 on the outside by adhesive or welding, respectively. See also Figure 21 In the installed state, the first and second conductive ends of the drive substrate 27 are parallel to each other and parallel to the adjustment direction of the drive assembly 20, i.e., parallel to the optical axis direction of the lens group. It should be noted that the number and structure of the positioning posts 251 can be set and changed as needed, and are not limited to the forms given in the example.

[0289] Similarly, for the aforementioned first driving substrate 271 and second driving substrate 272, the first support mechanism 2501 and the second support mechanism 2502 can respectively define the length of the first conductive end 2711 and the second conductive end 2712 of the first driving substrate 271, the connection width of the connecting strip 2713, and the length of the third conductive end 2721 and the fourth conductive end 2722 of the second driving substrate 272, and the connection width of the connecting strip 2723. Here, the length is the dimension along the optical axis direction or along the adjustment direction, and the width is the dimension along the height direction. That is, the length and height of the support mechanism 25 provide a reference for the length and height of the driving substrate 27.

[0290] Optionally, the supporting mechanism 25 further includes a supporting connecting portion 252, which also extends from the body of the supporting mechanism 25, but extends in the opposite direction to the positioning post 251 of the supporting mechanism 25, that is, the positioning post 251 and the supporting connecting portion 252 are located on two opposite sides of the body of the supporting mechanism 25. The supporting connecting portion 252 is used for fixed connection with the drive housing 26, wherein the drive housing 26 includes an upper housing 261 and a lower housing 262 connected to the upper housing 261 to form a closed structure. Specifically, as Figure 25 As shown, a bearing connection portion 252 protruding from the bearing mechanism 25 is provided on the side of the bearing mechanism 25 facing away from the optical axis. The bearing connection portion 252 is fixed to the drive housing 26 and exposed on the outer surface of the drive housing 26 to fix the bearing mechanism 25 to the drive housing 26.

[0291] like Figures 23-24 As shown, the positioning posts 251 of the support mechanism 25 all extend towards the corresponding driving carrier or transversely to the optical axis, thereby forming a placement space with the four positioning posts 251 of the support mechanism 25. The driving element 21 can be clamped and placed within the placement space of the support mechanism 25 by means of the pre-pressure device 23, thus the pre-pressure device 23 is embedded in the support mechanism 25. Therefore, the support mechanism 25 can both provide support for the driving element 21 and the pre-pressure device 23 and fix the positions of the driving element 21 and the pre-pressure device 23.

[0292] The bearing mechanism 25 is disposed between the pre-pressure device 23 and the drive housing 26. The bearing connection portion 252 of the bearing mechanism 25 is fixed to the drive housing 26. The driving element 21, the pre-pressure device 23 and the drive housing 26 are fixedly connected by the bearing mechanism 25.

[0293] Figure 25 This is a perspective view of a drive assembly 20 according to some embodiments of this application, including a drive housing 26 having an upper housing 261 and a lower housing 262. The drive housing 26 is used to accommodate the drive element 21, drive carrier 22, friction plate, pre-pressure device 23, friction mechanism 215, guide device 24, bearing mechanism 25, drive base plate 27 and other components, providing protection for each component and preventing dust from falling in.

[0294] like Figure 25 As shown, the drive housing 26 includes an upper housing 261 and a lower housing 262. The lower housing 262 is a U-shaped groove structure with an upward opening, so that other components in the drive assembly 20 can be directly inserted into the drive housing 26 through the opening.

[0295] The outer wall of the lower housing 262 is provided with a connecting groove 2623, and the bearing connecting part 252 of the bearing mechanism 25 can be embedded in the connecting groove 2623 for fixation. Optionally, the bearing connecting part 252 of the bearing mechanism 25 is constructed as a T-shaped insert, which can be embedded in the connecting groove 2623 of the lower housing 262 for fixation.

[0296] In addition, such as Figure 25 As shown, overlapping grooves of different heights can also be provided on the side wall of the lower housing 262. The overlapping grooves include an inner overlapping groove 2621 and an outer overlapping groove 2622. The height of the inner overlapping groove 2621 is higher than the height of the outer overlapping groove 2622. This allows light that is not blocked by the outer overlapping groove 2622 to be blocked by the inner overlapping groove 2621, thereby preventing stray light from entering.

[0297] According to another aspect of the present invention, a camera module 100 is also provided, comprising:

[0298] The driving assembly 20 for driving the lens is given in the various embodiments described above;

[0299] Photosensitive component 30 is used to receive light signals and convert the received light signals into image signals;

[0300] Lens group 10 includes a fixed group 11 and an adjustable group, wherein the drive element 21 of the drive assembly 20 is configured to drive the adjustable group of the lens group 10.

[0301] Optionally, the adjustable groups of the lens group 10 include a zoom group 11 and a focus group 12, wherein the drive carrier 22 of the drive assembly 20 includes a first carrier 221 for carrying the zoom group 11 and a second carrier 222 for carrying the focus group 12, wherein the first carrier 221 and the second carrier 222 are arranged coaxially in sequence along the adjustment direction and can be driven individually.

[0302] According to this application, the camera module 100 uses the drive assembly 20, which includes, in particular, a piezoelectric actuator, as a driver, which not only provides a sufficiently large driving force, but also provides higher precision and longer stroke driving performance to meet the zoom requirements of the zoom camera module 100.

[0303] Furthermore, the piezoelectric actuator of the drive assembly 20 can have a relatively small size to better adapt to the trend of lightweight and thin camera modules. In addition, the variable zoom camera module 100 employs a reasonable layout scheme to arrange the piezoelectric actuator within the drive assembly 20 to meet the structural and dimensional requirements of the variable zoom camera module 100.

[0304] Figure 26 This is a schematic flowchart illustrating an assembly method for a drive assembly 20 for driving a lens according to some embodiments of this application. Figure 26 As shown, the assembly method of the drive assembly 20 for driving the lens proposed herein includes the following steps:

[0305] S1. Embed the pre-pressure device 23 into the bearing mechanism 25 to fix the pre-pressure device 23 to the bearing mechanism 25;

[0306] S2. Electrically connect the two driving elements 21 to the driving substrate 27, wherein;

[0307] S3. Place the drive substrate 27 between the upper clamp and the lower clamp of the pre-pressure device 23;

[0308] S4. Place the friction plate between the two driving elements 21, so that the friction plate is fixedly connected to the driving carrier 22, and clamp the two driving elements 21 by the pre-pressure device 23 so that they maintain frictional contact with the friction plate respectively.

[0309] S5. Fix the support mechanism 25 to the drive housing 26.

[0310] Specifically, in step S1, the pre-pressure device 23 is embedded in the bearing mechanism 25 to fix the pre-pressure device 23 to the bearing mechanism 25. Here, the pre-pressure device 23 utilizes its own structural elasticity or material elasticity to be embedded in the placement space formed by multiple positioning posts 251 in the bearing mechanism 25 and fixed therein.

[0311] In step S2, the driving element 21 is electrically connected to the driving substrate 27. In this step, the piezoelectric plates, such as piezoelectric ceramic plates 213, of the two driving elements 21 are electrically connected to the first and second conductive ends of the driving substrate 27, respectively, and the friction driving portions 214 of the two driving elements 21 are arranged opposite to each other. In a subsequent step, a pre-pressure device 23 is used to clamp the driving substrate 27 onto the driving elements 21.

[0312] In step S3, the driving substrate 27 is positioned between the upper clamping portion 231 and the lower clamping portion 233 of the pre-pressure device 23. In this step, the upper clamping portion 231 and the lower clamping portion 233 are respectively fixed to the first conductive end and the second conductive end of the driving substrate 27. The driving substrate 27 and the driving element 21 are clamped in the pre-pressure device 23 by the upper clamping portion 231 and the lower clamping portion 233, and the driving element 21 is further positioned in the placement space of the support mechanism 25.

[0313] In step S4, the friction plate is placed between the friction drive parts 214 of the two drive elements 21, and the pre-pressure device 23 causes the friction drive parts 214 of the two drive elements 21 to clamp the friction plate on both sides and maintain frictional contact with the friction plate.

[0314] In addition, in step S4, the first conductive end and the second conductive end of the driving substrate 27 can be fixed on the side of the positioning post 251 of the bearing mechanism 25.

[0315] In step S5, the semi-finished product assembled in the above steps, i.e., the pre-assembled components, is placed into the lower housing 262 of the drive housing 26, and the bearing connection portion 252 of the bearing structure 25 is embedded into the connecting groove 2623 of the lower housing 262 to fix the pre-assembled components to the lower housing 262 via the bearing structure 25. Then, the upper housing 261 is installed on the lower housing 262 to complete the assembly of the drive assembly 20.

[0316] It should be noted that the above assembly method also applies to the drive assembly 20 including the friction mechanism 215, the only difference being that one of the drive elements 21 is replaced by one friction mechanism 215. In this case, since the friction mechanism 215 does not need to be electrically connected to the drive substrate 27, the structure and electrical connection steps of the drive substrate 27 can be simplified accordingly. Similarly, the above assembly method also applies to the drive assembly 20 including one or more drive carriers 22, especially for multiple drive carriers, only the corresponding installation steps need to be repeated.

[0317] Figure 27 This describes an assembly method for a camera module 100 according to some embodiments of this application. For example... Figure 27 As shown, according to another aspect of this application, this application also discloses a method for assembling a zoom camera module 100, comprising the following steps:

[0318] S1. The zoom group 12 and the focus group 13 of the lens group 10 are respectively disposed in the first carrier 221 and the second carrier 222 of the drive assembly 20;

[0319] S2. Position the photosensitive component 30 on the light-emitting side of the lens group 10;

[0320] S3. Electrically connect the driving substrate 27 of the driving component 20 to the circuit board 31 of the photosensitive component 30 to achieve circuit conduction.

[0321] Specifically, in step S1, zoom group 12 and focus group 13 are respectively disposed in the first carrier 221 and the second carrier 222 of drive assembly 20, and then the assembly step of drive assembly 20 is completed as described above.

[0322] Here, the optical axis orientation of zoom group 12 and focus group 13 can be adjusted to be coaxial with the adjustment direction of the first carrier 221 and the second carrier 222, or coaxial with the geometric axis of the first carrier 221 and the second carrier 222.

[0323] In step S2, the light-deflecting element 40 may be disposed on the light-incident side of the zoom lens group 10, and the photosensitive component 30 may be disposed on the light-outceasing side of the zoom lens group 10.

[0324] In step S3, the driving substrate 27 of the driving assembly 20 is electrically connected to the circuit board 31 of the photosensitive assembly 30 to achieve circuit conduction. Here, the photosensitive chip 32 and electronic components 33, etc., can be pre-assembled on the circuit board 31.

[0325] The technical scope of this application is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this application, and all such modifications and variations fall within the protection scope of this application.

Claims

1. A drive assembly for driving a lens, characterized in that, include: The driving carrier includes a first carrier and a second carrier, which are respectively used to carry at least one adjustable group of lenses, wherein the first carrier and the second carrier are arranged sequentially on the same axis along the adjustment direction and are capable of moving independently of each other along the adjustment direction; First driving element; A first friction plate is disposed between the carrier body of the first carrier and the first driving element, wherein one end of the first friction plate is fixedly connected to the carrier body of the first carrier, and the other end is operatively connected to the first driving element; Second driving element; The second friction plate is disposed between the carrier body of the second carrier and the second driving element, wherein one end of the second friction plate is fixedly connected to the carrier body of the second carrier, and the other end is operatively connected to the second driving element; The first driving element and the second driving element are centrally symmetrical when viewed along the axis. The first friction plate of the first carrier is disposed on the first side of the driving assembly, and the second friction plate of the second carrier is disposed on the second side of the driving assembly. The first side and the second side are respectively located on opposite sides along the optical axis or along the adjustment direction. The first carrier includes a first connecting end extending outward from the carrier body of the first carrier and a second connecting end extending outward from the carrier body of the first carrier, wherein the first connecting end and the second connecting end are respectively located on opposite sides of the carrier body of the first carrier. The second carrier also includes a first connecting end extending outward from the carrier body of the second carrier and a second connecting end extending outward from the carrier body of the second carrier, wherein the first connecting end and the second connecting end are respectively located on opposite sides of the carrier body of the second carrier. The second connecting end of the first carrier has a mounting groove, the first friction plate is embedded in the mounting groove of the first carrier and fixedly connected to the carrier body of the first carrier, the second connecting end of the second carrier has a mounting groove, the second friction plate is embedded in the mounting groove of the second carrier and fixedly connected to the carrier body of the second carrier.

2. The driving assembly for driving a lens according to claim 1, wherein, The first driving element and the second driving element are constructed as standard parts with the same structure.

3. The driving assembly for driving a lens according to claim 1, wherein, The drive assembly further includes a first pre-pressure device configured to provide pre-pressure to the first drive element, such that the first drive element maintains frictional contact with the first friction plate under the action of the pre-pressure. The drive assembly further includes a second pre-pressure device, which is configured to provide pre-pressure to the second drive element, so that the second drive element maintains frictional contact with the second friction plate under the action of the pre-pressure.

4. The driving assembly for driving a lens according to claim 3, wherein, A first friction mechanism is provided between the first pre-pressure device and the first friction plate, such that the first friction plate and the first pre-pressure device are movably connected through the first friction mechanism. A second friction mechanism is provided between the second pre-pressure device and the second friction plate, so that the second friction plate and the second pre-pressure device are movably connected through the second friction mechanism.

5. The driving assembly for driving a lens according to claim 4, wherein, A first driving element is disposed on one side of the first friction plate, and a first friction mechanism is disposed on the opposite side of the first friction plate, such that the first friction plate is clamped between the first driving element and the first friction mechanism, and the first friction plate can move along the adjustment direction under the driving action of the first driving element. A second driving element is disposed on one side of the second friction plate, and a second friction mechanism is disposed on the opposite side of the second friction plate, such that the second friction plate is clamped between the second driving element and the second friction mechanism, and the second friction plate can move along the adjustment direction under the driving action of the second driving element. The first friction mechanism and the second friction mechanism are centrally symmetrical when viewed along the axis.

6. The driving assembly for driving a lens according to claim 5, wherein, The first friction mechanism and the second friction mechanism are constructed as standard parts with the same structure.

7. The driving assembly for driving a lens according to claim 6, wherein, The first structural unit formed by the first driving element and the first friction mechanism and the second structural unit formed by the second driving element and the second friction mechanism are constructed as standard parts with the same structure, and are centrally symmetrical when viewed along the axis.

8. The drive assembly for driving a lens according to any one of claims 4 to 7, wherein, The first friction mechanism includes a groove or roller track formed in the first preload device and / or the first friction plate, and balls or sliders arranged in the groove or roller track. The second friction mechanism includes a groove or roller channel constructed in the second preload device and / or the second friction plate, and balls or sliders arranged in the groove or roller channel.

9. The drive assembly for driving a lens according to any one of claims 5 to 7, wherein, The first pre-pressure device and the second pre-pressure device each include an upper clamp, a lower clamp, and a connecting part connecting the upper clamp and the lower clamp. The first pre-pressure device elastically clamps the first friction plate, the first driving element, and the first friction mechanism arranged on both sides of the first friction plate between the upper and lower clamping parts of the first pre-pressure device, and The second pre-pressure device elastically clamps the second friction plate, the second driving element and the second friction mechanism arranged on both sides of the second friction plate between the upper clamp and the lower clamp of the second pre-pressure device.

10. The driving assembly for driving a lens according to claim 3, wherein, A first driving element is respectively disposed on two opposite sides of the first friction plate, such that the first friction plate is clamped between the two first driving elements and can move along the adjustment direction under the cooperative driving action of the two first driving elements. A second driving element is respectively arranged on two opposite sides of the second friction plate, so that the second friction plate is clamped between the two second driving elements and can move along the adjustment direction under the cooperative driving action of the two second driving elements. The two first drive elements and the two second drive elements are centrally symmetrical when viewed along the axis.

11. The drive assembly for driving a lens according to claim 10, wherein, The first pre-pressure device and the second pre-pressure device each include an upper clamp, a lower clamp, and a connecting part connecting the upper clamp and the lower clamp. The first pre-pressure device elastically clamps the first friction plate and the first driving element arranged on both sides of the first friction plate between the upper and lower clamping parts of the first pre-pressure device, and The second preload device elastically clamps the second friction plate and the second drive element arranged on both sides of the second friction plate between the upper and lower clamps of the second preload device.

12. The drive assembly for driving a lens according to any one of claims 1 to 7, wherein, The first driving element and the second driving element are configured as piezoelectric actuators, each including a piezoelectric plate and a friction driving part fixed on the piezoelectric plate. The friction driving part of the first driving element is operatively connected to the first friction plate, thereby driving the first friction plate to move along the adjustment direction. The friction driving part of the second driving element is operatively connected to the second friction plate, thereby driving the second friction plate to move along the adjustment direction.

13. The drive assembly for driving a lens according to any one of claims 1 to 7, wherein, The drive assembly further includes a guide device for guiding the first carrier and the second carrier to move along the adjustment direction, wherein the guide device includes at least one guide rod that passes through the first carrier and the second carrier parallel to the adjustment direction, thereby enabling the first carrier and the second carrier to move along the guide device.

14. The drive assembly for driving a lens according to claim 13, wherein, The first connecting end of the first carrier has a first connecting hole, and the second connecting end of the first carrier has a second connecting hole. The first connecting end of the second carrier has a first connecting hole, and the second connecting end of the second carrier has a second connecting hole. The guiding device includes a first guide rod and a second guide rod, wherein the first guide rod passes through a second connecting hole at the second connecting end of the first carrier and a first connecting hole at the first connecting end of the second carrier, and the second guide rod passes through a first connecting hole at the first connecting end of the first carrier and a second connecting hole at the second connecting end of the second carrier, so that the first carrier and the second carrier can move independently along the first guide rod and the second guide rod of the guiding device under the drive of the first driving element and the second driving element, respectively, wherein the first guide rod and the second guide rod are arranged parallel to each other along the adjustment direction.

15. The drive assembly for driving a lens according to claim 14, wherein, The first guide rod and the second guide rod of the guiding device have a height difference.

16. The drive assembly for driving a lens according to claim 10, wherein, A first driving substrate is disposed between the first pre-pressure device and the first driving element. The first driving substrate is electrically connected to the first driving element and is used to supply current to the first driving element. The first driving substrate is clamped onto the first driving element by the first pre-pressure device. A second driving substrate is disposed between the second pre-pressure device and the second driving element. The second driving substrate is electrically connected to the second driving element and is used to supply current to the second driving element. The second driving substrate is clamped onto the second driving element by the second pre-pressure device. The first driving substrate and the second driving substrate are centrally symmetrical when viewed along the axis.

17. The drive assembly for driving a lens according to claim 16, wherein, The first driving substrate includes a first conductive end, a second conductive end, and a connecting strip connecting the first conductive end and the second conductive end. The first conductive end of the first driving substrate is clamped onto the corresponding driving element by the upper clamp of the first pre-pressure device, and the second conductive end of the first driving substrate is clamped onto the corresponding driving element by the lower clamp of the first pre-pressure device. The second driving substrate includes a third conductive end, a fourth conductive end, and a connecting strip connecting the third conductive end and the fourth conductive end. The third conductive end of the second driving substrate is clamped on the corresponding driving element by the lower clamp of the second pre-pressure device, and the fourth conductive end of the second driving substrate is clamped on the corresponding driving element by the upper clamp of the second pre-pressure device.

18. The drive assembly for driving a lens according to any one of claims 1 to 7, wherein, The drive assembly further includes a first support mechanism and a second support mechanism. The first and second support mechanisms each have multiple positioning posts forming a placement space. The first drive element is positioned within the placement space of the first support mechanism under the clamping of a first pre-pressure device. Furthermore, the first conductive end and the second conductive end of the first drive substrate are respectively fixed externally to the positioning posts of the first support mechanism within the placement space of the first support mechanism. The second driving element is disposed in the placement space of the second bearing mechanism under the clamping of the second pre-pressure device, and the third conductive end and the fourth conductive end of the second driving substrate are respectively fixed on the positioning post of the second bearing mechanism outside the placement space of the second bearing mechanism.

19. The drive assembly for driving a lens according to claim 18, wherein, The first and second bearing mechanisms also have bearing connection parts, which are fixedly connected to the drive housing, wherein the drive housing includes an upper housing and a lower housing connected to the upper housing to form a closed structure.

20. A camera module, comprising The driving assembly for driving a lens as described in any one of claims 1 to 19; A photosensitive component is used to receive light signals and convert the received light signals into image signals; A lens assembly, comprising a fixed group and an adjustable group, wherein the drive element of the drive assembly is configured to drive the adjustable group of the lens assembly.

21. The camera module according to claim 20, wherein, The adjustable groups of the lens group include a zoom group and a focus group, wherein the first carrier of the drive component is used to carry the first carrier of the zoom group, and the second carrier of the drive component is used to carry the focus group, wherein the first carrier and the second carrier can be driven separately by the first drive element and the second drive element, respectively.

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