Zoom lens and camera module with zoom lens

Abstract

This application proposes a telescopic lens, including an optical lens comprising at least two relatively movable first lens components and second lens components arranged sequentially from the object side to the image side along the optical axis; a first driving section including a first driving element; and a second driving section including a second driving element, for driving the first lens components to move along the optical axis of the optical lens to achieve optical focusing. The first driving section is configured to drive the second driving section and the first lens components arranged in the second driving section along the optical axis of the optical lens, wherein, in a projection plane perpendicular to the optical axis of the optical lens, the first driving element of the first driving section and the second driving element of the second driving section are not on the same straight line passing through the optical axis. This allows for optimized utilization of the internal structural space of the telescopic lens, minimizing the lateral structural dimensions of the telescopic lens while ensuring the imaging quality of the camera module.

Description

Technical Field

[0001] This application relates to the field of camera module technology, and more particularly to a telescopic lens and a camera module with a telescopic lens. Background Technology

[0002] The description herein provides only background information in relation to this application and does not necessarily constitute prior art.

[0003] Currently, camera modules configured in mobile electronic devices (e.g., smartphones) need to simultaneously achieve telephoto and wide-angle functions. The trend towards thinner and lighter electronic devices has limited the size of camera modules, and this size limitation makes it impossible for both vertical and periscope camera modules to meet these requirements.

[0004] Furthermore, to cater to the trend of thinner and lighter terminal devices, manufacturers are committed to researching camera modules that offer high imaging quality while reducing or maintaining the same overall height. Improving the imaging quality of camera modules and increasing the size of the image sensor is an inevitable trend. As image sensor sizes increase, especially with the image sensor's sensor area reaching 1 inch, the TTL of the module and the thickness of the camera will inevitably increase further. Therefore, there is an irreconcilable contradiction between increasing chip size and increasing module height.

[0005] As the size of image sensors increases, the size of camera modules also increases. However, due to the size limitations of mobile electronic devices, camera modules cannot be increased in size at will. Using a telescopic lens allows the camera module to have sufficient TTL to meet imaging requirements during operation, while minimizing the height of the camera module when not in operation. However, because the telescopic lens is relatively large, the motor that drives the lens in both extended and retracted states also needs to be larger to provide sufficient driving force. This situation makes it difficult to reduce the lateral size of the telescopic module, contradicting the requirement for miniaturization of camera modules.

[0006] How to improve the imaging quality of camera modules by using large-size chips while reducing or keeping the overall height of the camera module unchanged is a problem that major manufacturers urgently need to solve.

[0007] Therefore, a retractable camera module is needed. This module uses a motor to drive the optical lens to move retractably relative to the image sensor, allowing it to switch between retracted and extended states. Conventional VCM motors cannot meet the autofocus travel requirements of retractable camera modules. While conventional stepper motors can meet the travel requirements, their insufficient precision and step angle limitations result in imprecise movement during autofocus, hindering clear imaging.

[0008] At the same time, there is also a need to reduce the lateral dimensions of the camera module and telescopic lens, that is, to reduce the size of the camera module and telescopic lens in the direction transverse to the optical axis, thereby optimizing the installation space requirements of the entire camera module for terminal devices such as mobile phones, while ensuring reliable operation and high-quality imaging.

[0009] Therefore, there is a need to provide a new type of telescopic lens and a camera module with a telescopic lens to meet the above requirements. Summary of the Invention

[0010] A key advantage of this application is that it provides a telescopic lens and a camera module with a telescopic lens, wherein the telescopic lens of the camera module can extend and retract along the optical axis, which helps to resolve the contradiction between the imaging quality and the height of the camera module.

[0011] Another advantage of this application is that it provides a telescopic lens and a camera module with a telescopic lens, wherein the relative structure and positional relationship of the driving parts are reasonably arranged to optimize the structural space of the telescopic lens, thereby reducing the overall size of the camera module.

[0012] Another advantage of this application is that it provides a telescopic lens and a camera module with a telescopic lens, wherein the first driving element of the first driving part and the second driving element of the second driving part are not on the same straight line passing through the optical axis, thereby achieving optimal reduction of the lateral structural size of the telescopic lens while ensuring the imaging quality of the camera module.

[0013] Another advantage of this application is that it provides a telescopic lens and a camera module with a telescopic lens, wherein the side of the second driving part corresponding to the position of the first driving element is different from the side with the second driving element, so as to make full use of the polygonal shape of the driving part, achieve the optimal structural arrangement and at the same time ensure working performance.

[0014] Another advantage of this application is that it provides a telescopic lens and a camera module with a telescopic lens, wherein the side of the second drive part corresponding to the position of the first drive element is not parallel to the side with the second drive element, so as to make full use of the space within the telescopic lens, and on the other hand, to leave enough clearance space for components such as stepper motors and guide components.

[0015] Another advantage of this application is that it provides a telescopic lens and a camera module with a telescopic lens, wherein the optical lens is provided with a force to move away from the photosensitive chip by means of the elasticity of the elastic element itself, thereby simplifying the design of the module's drive structure.

[0016] Another advantage of this application is that it provides a telescopic lens and a camera module with a telescopic lens, wherein by using a first driving part to drive a second driving part and a lens component, when the first driving part is driven to rise, it provides sufficient zoom travel and ample working space for the camera module, and when the first driving part is driven to fall, it shortens the overall height of the camera module, thereby achieving miniaturization of the system structure.

[0017] Another advantage of this application is that it provides a telescopic lens and a camera module with a telescopic lens, wherein by setting the optical lens as a separate type, the performance of the optical lens can be changed in the working state, thereby adapting to shooting in different environments and improving the imaging quality of the camera module.

[0018] Another advantage of this application is that it provides a telescopic lens and a camera module with a telescopic lens, wherein by setting the optical lens as a separate type, the gap between the optical lenses can be greatly compressed when not in operation, so that the height of the module is minimized, solving the problem of it protruding from the terminal shell and thus affecting the aesthetics of the terminal.

[0019] Another advantage of this application is that it provides a telescopic lens and a camera module with a telescopic lens, wherein by using chip-based image stabilization in conjunction with the telescopic movement of the lens components, the overall structure is miniaturized while the imaging quality of the camera module is improved.

[0020] Therefore, according to the first aspect of this application, a telescopic lens is proposed, comprising:

[0021] An optical lens includes at least two first lens components and a second lens component arranged sequentially from the object side to the image side along the optical axis, wherein the first lens component is movable relative to the second lens component along the optical axis.

[0022] The first drive section includes a first drive element; and

[0023] The second driving section includes a second driving element for driving the first lens component to move along the optical axis of the optical lens to achieve optical focusing.

[0024] The first driving section is configured to drive the second driving section and the first lens component arranged in the second driving section along the optical axis of the optical lens.

[0025] In the projection plane perpendicular to the optical axis of the optical lens, the first driving element of the first driving part and the second driving element of the second driving part are not on the same straight line passing through the optical axis.

[0026] According to some embodiments of the first aspect of this application, in a cross section perpendicular to the optical axis of the optical lens, the second driving portion has a polygonal shape, wherein the side of the second driving portion corresponding to the position of the first driving element of the first driving portion is different from the side of the second driving portion where the second driving element is located.

[0027] According to some embodiments of the first aspect of this application, the side of the second driving portion corresponding to the position of the first driving element of the first driving portion is not parallel to the side of the second driving portion where the second driving element is located.

[0028] According to some embodiments of the first aspect of this application, the first driving part further includes a movable sleeve, and the first driving element of the first driving part is connected to the movable sleeve in a transmission connection, thereby driving the movable sleeve to move along the optical axis direction of the optical lens, wherein the movable sleeve includes a sleeve protrusion extending in the image-side direction within the receiving cavity of the sleeve body, wherein in the non-working state of the telescopic lens, the sleeve protrusion of the movable sleeve presses against the second driving part.

[0029] According to some embodiments of the first aspect of this application, the first driving element of the first driving portion further includes a driving mechanism and a transmission mechanism that is tractively connected to the driving mechanism, wherein the first driving element is tractively connected to the movable sleeve through the transmission mechanism, wherein the driving mechanism of the first driving element of the first driving portion includes a driving device, the transmission mechanism includes a gear device and a transmission screw, the gear device includes a first gear and a second gear that meshes with the first gear, wherein the first gear is driven by the driving device, the second gear is connected to the transmission screw, and the transmission screw is tractively connected to the first movable connecting end of the movable sleeve.

[0030] According to some embodiments of the first aspect of this application, the first driving portion further includes a guide member for guiding the movement of the movable sleeve. The guide member includes a main guide rod and a secondary guide rod, wherein the main guide rod is inserted into a second movable connection end of the movable sleeve, and the secondary guide rod is inserted into a third movable connection end of the movable sleeve. The main guide rod and the secondary guide rod extend parallel to the optical axis of the optical lens, with one end fixed to a fixed base of the first driving portion and the other end fixed to a driving housing of the first driving portion. In a projection plane perpendicular to the optical axis of the optical lens, the main guide rod and the first driving element of the first driving portion are located on the same side of the telescopic lens, and the secondary guide rod is located on the side of the telescopic lens opposite to the main guide rod based on the optical axis of the optical lens.

[0031] According to some embodiments of the first aspect of this application, the second driving portion further includes a fixed carrier and a movable carrier that can move relative to the fixed carrier along the optical axis of the optical lens, wherein the movable carrier is configured to carry a first lens component of the optical lens.

[0032] According to some embodiments of the first aspect of this application, the telescopic lens further includes at least one pop-out mechanism disposed between the first lens component and the second lens component, wherein in the working state of the telescopic lens, the at least one pop-out mechanism causes the second drive portion together with the first lens component disposed in the second drive portion to extend relative to the second lens component, wherein the pop-out mechanism includes a first elastic member and a support rod, the first elastic member having a hollow internal structure, and the support rod being accommodated in the hollow structure of the first elastic member, wherein in the non-working state of the telescopic lens, the first elastic member of the at least one pop-out mechanism is compressed between the first lens component and the second lens component, wherein the first elastic member is configured as a helical spring, and the support rod is inserted into the helical spring.

[0033] According to some embodiments of the first aspect of this application, the first driving portion and the pop-up mechanism are configured to provide driving forces in opposite directions, wherein in the working state of the telescopic lens, the first driving portion and the pop-up mechanism cooperate with each other to drive the second driving portion together with the first lens component arranged in the second driving portion to a first position along the optical axis of the optical lens, wherein the second driving portion is configured to drive the first lens component arranged in the second driving portion to move along the optical axis of the optical lens during and / or after being driven to the first position by the first driving portion, so as to achieve optical focusing.

[0034] According to some embodiments of the first aspect of this application, the first driving part further includes a stop mechanism, the stop mechanism including a first stop fixing part and a second stop movable part, wherein the first stop fixing part is disposed on the fixed base of the first driving part, and the second stop movable part is fixedly connected to the fixed carrier of the second driving part.

[0035] According to some embodiments of the first aspect of this application, the first stop fixing part of the stop mechanism has at least one first stop block, which restricts the movement of the second stop movable part of the stop mechanism toward the object side along the optical axis of the optical lens. The second stop movable part of the stop mechanism includes a stop movable part body and a stop movable part through hole disposed in the middle of the stop movable part body. The size of the stop movable part through hole is larger than the diameter of the bottom of the first lens component, so that the first lens component can move within the stop movable part through hole along the optical axis of the optical lens. In a projection plane perpendicular to the optical axis of the optical lens, the stop mechanism is disposed between the movable sleeve of the first drive part and the second drive part.

[0036] According to some embodiments of the first aspect of this application, the second stop movable part of the stop mechanism further includes at least one stop movable part support column, which extends from the outer side wall of the stop movable part body along the optical axis direction of the optical lens toward the object side, wherein the at least one stop movable part support column has a through hole, and one end of the support rod of the pop-out mechanism is fixedly connected to the second lens barrel of the second lens component, and the other end passes through the through hole of the corresponding stop movable part support column.

[0037] According to some embodiments of the first aspect of this application, the second driving element of the second driving part is configured as a voice coil motor, which includes a focusing magnet and a focusing coil respectively disposed on a movable carrier and a fixed carrier of the second driving part.

[0038] According to some embodiments of the first aspect of this application, in a cross section perpendicular to the optical axis of the optical lens, the movable carrier and the fixed carrier of the second driving portion have the same polygonal shape, wherein the side of the movable carrier and the fixed carrier corresponding to the position of the first driving element of the first driving portion is different from and not parallel to the side of the movable carrier and the fixed carrier corresponding to the side where the focusing magnet and the focusing coil are provided.

[0039] According to some embodiments of the first aspect of this application, the second driving part further includes a magnetic attraction member having a magnetic attraction magnet and a first magnetic yoke, wherein the magnetic attraction magnet is disposed opposite to the first magnetic yoke and is respectively disposed on the movable carrier and the fixed carrier of the second driving part, wherein, viewed circumferentially around the optical axis of the optical lens, the magnetic attraction magnet of the magnetic attraction member of the second driving part is disposed between two focusing magnets, and the first magnetic yoke is disposed between two focusing coils.

[0040] According to a second aspect of this application, a camera module is provided, including a photosensitive component and a telescopic lens as described, wherein the telescopic lens is positioned on the photosensitive path of the photosensitive component, such that light reflected from an object can be imaged on the photosensitive component after passing through the telescopic lens.

[0041] According to some embodiments of the second aspect of this application, the photosensitive component includes a third driving portion, which is adapted to drive the photosensitive chip to translate, rotate, or tilt, thereby realizing the image stabilization function of the photosensitive chip of the camera module.

[0042] These and other objects, features and advantages of this application are fully apparent from the following detailed description and accompanying drawings. Attached Figure Description

[0043] 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:

[0044] Figure 1 A schematic diagram of the external structure of a camera module according to some embodiments.

[0045] Figure 2 These are exploded structural views of some embodiments of the telescopic lens proposed in this application;

[0046] Figure 3 Is it like this? Figure 2 The exploded view of the second drive section together with the stop mechanism supporting the second drive section is shown.

[0047] Figure 4 This is a perspective view of the second drive section in a non-operating state according to some embodiments;

[0048] Figure 5 This is a perspective view of the second drive section in operation according to some embodiments;

[0049] Figure 6 This is a schematic diagram showing the positional relationship of the main components of the second drive element in the second drive section;

[0050] Figure 7 This is a cross-sectional view of the second drive section along the optical axis in a non-operating state according to some embodiments;

[0051] Figure 8 This is a cross-sectional view of the second drive section along the optical axis in the working state according to some embodiments;

[0052] Figure 9 This is a schematic cross-sectional view of a telescopic lens in a direction perpendicular to the optical axis, according to some embodiments.

[0053] Figure 10 This is a schematic diagram of an electronic device that utilizes the camera module and telescopic lens proposed in this application. Detailed Implementation

[0054] The present invention will be further described in detail below with reference to specific embodiments. It should be noted that the embodiments listed herein are merely for clearly illustrating the inventive concept of the present invention and should not be construed as limiting the invention. The technical features of components such as telescopic lenses and camera modules involved herein, as long as they do not violate natural laws or technical specifications, can be arbitrarily combined or substituted within the framework of the present invention and are all within the scope of the present invention.

[0055] It should be noted that the embodiments shown in the accompanying drawings are merely examples used to specifically and figuratively explain and illustrate the concept of the present invention. They are not necessarily drawn to scale in terms of size and structure, nor do they constitute a limitation on the concept of the present invention. In the drawings, solid lines represent laser beams, and dashed lines represent visible light beams. Here, solid and dashed lines are only used to schematically distinguish between laser beams and visible light beams to clearly illustrate the proposed technical solution.

[0056] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the structures shown in the various accompanying drawings. They are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.

[0057] It should be noted that the optical axis, or optical axis direction, mentioned in this invention refers to the center line of the light beam (light column), or the axis of symmetry of the optical system. For camera modules, photosensitive components, or optical lenses, their optical axes are usually coincident, and are simply referred to as the optical axis in this document. The lateral or radial direction mentioned in this invention generally refers to the direction perpendicular to the optical axis in a plane perpendicular to the optical axis, or the radial direction of a virtual circle centered at the intersection of the optical axis and this plane.

[0058] To meet the trend of thinner and lighter terminal devices, manufacturers are working to develop camera modules that offer high image quality while reducing or maintaining the same overall height. Improving the image quality of camera modules inevitably leads to an increase in the size of the image sensor. However, as image sensor sizes grow larger, especially with the image sensor's sensor area reaching 1 inch, the TTL (Total Transfer Volume) and thickness of the camera module will inevitably increase further. Therefore, there is an irreconcilable contradiction between increasing chip size and increasing module height.

[0059] How to improve the imaging quality of camera modules using large-size chips while reducing or maintaining the overall height of the camera module is a pressing issue for manufacturers. To address this problem, this invention proposes a retractable lens with a transparent cover, also known as a CG (Cover Glass). When the camera module is in operation, the CG extends using a retractable structure, and an elastic element at the lens end keeps the optical lens a certain distance away from the image sensor, meeting the TTL requirements for large-size chip imaging and enabling the module to capture images. After capturing images, the retractable structure retracts the CG to its initial position, simultaneously compressing the distance between the image sensor and the optical lens, restoring them to their initial state. This reduces the overall height of the camera module when it is not in operation. This design effectively resolves the inherent contradiction between improving the imaging quality of large-size image sensors and the inherent height of the module itself, allowing terminal devices equipped with this camera module to achieve a slimmer and lighter design. It enhances the overall aesthetics while fulfilling its imaging function, meeting market demands and improving user satisfaction.

[0060] Based on the above issues, this paper analyzes the methods for reducing the height of large-size chips in camera modules. In existing module designs, four spatial distances can be optimized, listed from largest to smallest: ① the height H1 of the lens body and compression of the lens gap; ② the height H2 between the bottom surface of the optical lens and the photosensitive component; ③ the distance H3 between the CG (photosensitive element) and the lens end face; ④ the height H4 of the photosensitive component itself. After analysis and comparison, current photosensitive components already employ a chip + steel plate design, limiting the distance that can be reduced in height. Therefore, the main focus is on optimizing the heights of H1, H2, and H3. The main design idea is to ensure that H1, H2, and H3 meet the imaging distance requirements during operation, and to minimize the distance between H1, H2, and H3 during standby, thereby reducing the overall height in standby mode and meeting the trend towards thinner and lighter terminal devices.

[0061] Therefore, some embodiments of the present invention disclose a telescopic lens 100, which includes an optical lens 20, a first driving portion 41, and a second driving portion 42. The optical lens 20 may include at least two first lens components 21 and second lens components 22 arranged sequentially from the object side to the image side along the optical axis, wherein the first lens component 21 is movable relative to the second lens component 22 along the optical axis. The first driving portion 41 includes a first driving element 412, configured to drive the second driving portion 42 and / or the first lens component 21 arranged in the second driving portion 42 along the optical axis of the optical lens 20 to achieve preliminary optical focusing. The second driving portion 42 includes a second driving element 421, used to drive the first lens component 21 to move along the optical axis of the optical lens 20 to achieve precise optical focusing.

[0062] Figure 1 This is a schematic diagram of the external structure of a camera module according to some embodiments of the present invention. As shown, the camera module 2000 includes a telescopic lens 100 and a photosensitive assembly 200, wherein the telescopic lens 100 is disposed in the photosensitive path of the photosensitive assembly 200. When the telescopic lens is in the working state, the lens component can extend to increase the distance between at least one lens component and other lens components, thereby achieving preliminary focusing; when the telescopic lens is in the non-working state, the lens component retracts to compress the distance between at least one lens component and other lens components, thereby reducing the height of the telescopic lens in the non-working state.

[0063] exist Figure 2 The diagram shows exploded views of some embodiments of the telescopic lens proposed in this invention. For example... Figure 2 As shown, the telescopic lens 100 may include an optical lens 20, a pop-up mechanism 30, and a lens drive section. The optical lens 20 is a split lens, comprising at least two lens components arranged sequentially along the optical axis. The pop-up mechanism 30 is disposed between the at least two lens components. When the telescopic lens is in operation, the pop-up mechanism 30 extends at least one lens component to increase the distance between the at least one lens component and other lens components, thereby meeting the TTL (Total Optical Length) requirement for imaging large-size photosensitive chips. When the telescopic lens is not in operation, the lens drive section retracts at least one lens component to its initial position to compress the distance between the at least one lens component and other lens components, thereby reducing the height of the telescopic lens in the non-operational state.

[0064] Specifically, such as Figure 7-8As can be seen most intuitively, in some embodiments of this application, the optical lens 20 includes a first lens component 21 and a second lens component 22 arranged sequentially along the optical axis. The first lens component 21 includes a first lens barrel and a first lens group installed within the first lens barrel; the second lens component 22 includes a second lens barrel and a second lens group installed within the second lens barrel. Of course, it is understood that in other embodiments of the present invention, the optical lens 20 may also include a third lens component, a fourth lens component, etc., and the present invention does not impose any limitations on this.

[0065] In some embodiments of this application, a lens gap exists between the first lens component 21 and the second lens component 22 along the optical axis. This lens gap can be increased when the telescopic lens is in operation or decreased when it is not in operation. The height of the telescopic lens, i.e., its dimension along the optical axis, is adjusted by changing the lens gap. Of course, the number of lens gaps increases with the number of lens components, and this application does not limit this. In some embodiments of this application, the lens gap ranges from 0.5mm to 3mm.

[0066] Specifically, in some embodiments of this application, the first lens component 21 can move relative to the second lens component 22 along the optical axis. For example, in some embodiments of this application, in the non-operating state, the first lens component 21 can move towards the image side along the optical axis under the drive of the lens driving part to reduce the lens gap between the first lens component 21 and the second lens component 22; in the operating state, the first lens component 21 can move towards the object side along the optical axis under the cooperative drive of the pop-up mechanism 30 to increase the lens gap between the first lens component 21 and the second lens component 22.

[0067] like Figure 2 As shown, in some embodiments of this application, a pop-up mechanism 30 is disposed between the first lens component 21 and the second lens component 22. The pop-up mechanism 30 includes a first elastic member 31 and a support rod 32. The first elastic member 31 has a hollow internal structure to accommodate the support rod 32. In the non-operating state, under the action of the lens driving part, the lens gap between the first lens component 21 and the second lens component 22 is minimal, and the first elastic member 31 is compressed by the first lens component 21 and the second lens component 22. In the operating state, the lens gap between the first lens component 21 and the second lens component 22 is maximum, and the elastic force generated when the first elastic member 31 is compressed is released, driving the first lens component 21 to move relative to the second lens component 22 along the optical axis. In this application, the first elastic member 31 is a spring, a sheet, or other material with a certain degree of elasticity.

[0068] Specifically, in the working state of the telescopic lens, the second drive portion 42, together with the first lens component 21 arranged in the second drive portion 42, extends relative to the second lens component 22 by the at least one pop-out mechanism 30. In the non-working state of the telescopic lens, the first elastic member 31 of the at least one pop-out mechanism 30 is compressed between the first lens component 21 and the second lens component 22. The first elastic member 31 is configured, for example, as a helical spring, and the support rod 32 is inserted into the helical spring.

[0069] The first driving portion 41 and the pop-up mechanism 30 can be configured to provide driving forces in opposite directions. In the working state of the telescopic lens, the first driving portion 41 and the pop-up mechanism 30 cooperate to drive the second driving portion 42, along with the first lens component 21 arranged in the second driving portion 42, to a first position along the optical axis of the optical lens 20. The second driving portion 42 is configured to drive the first lens component 21 arranged in the second driving portion 42 to move along the optical axis of the optical lens 20 during and / or after being driven to the first position by the first driving portion 41, to achieve optical focusing. In other words, the driving actions of the first driving portion 41 and the second driving portion 42 can be performed sequentially, simultaneously, or alternately until precise optical focusing is finally achieved.

[0070] It is worth mentioning that in some embodiments of this application, the height and shape of the support rod 32 are fixed. When the telescopic lens is in a non-working or working state, the first elastic member 31 disposed on the support rod 32 is compressed or ejected and deformed, while the height and shape of the support rod 32 do not change with the movement of the first lens component 21. This arrangement allows the deformation direction of the first elastic member 31 to be limited by the support rod 32 along the optical axis, thereby reducing the error generated when the first elastic member 31 moves along the optical axis.

[0071] exist Figure 2 In some embodiments shown, the support rod 32 is arranged along the optical axis, i.e., parallel to the optical axis. One end of the support rod 32 is fixedly connected to the second lens component 22, for example, to the second lens barrel of the second lens component 22, and the other end of the support rod 32 can pass through the stop mechanism 418, which will be described in detail later. Alternatively, in some embodiments of this application, one end of the support rod 32 is fixedly connected to the second lens component 22, for example, to the second lens barrel of the second lens component 22, and the other end of the support rod 32 can be movably connected to the first lens component 21, for example, to the first lens barrel of the first lens component 21. The above structural measures can prevent the first lens component 21 from deflecting when it moves along the optical axis.

[0072] like Figure 2 and Figure 7-8 As shown, in some embodiments of this application, the lens driving portion includes a first driving portion 41, which is configured to drive a second driving portion 42 and the first lens component 21 disposed in the second driving portion 42 along the optical axis of the optical lens 20. The first driving portion 41 may be generally disposed on one side of the optical lens 20, and the first driving portion 41 may abut against the optical lens 20 or the second driving portion 42. In the non-operating state, the first driving portion 41 drives downward along the optical axis, driving the first lens component 21 of the optical lens 20 to move towards the image side along the optical axis through the portion abutting against the optical lens 20 or the second driving portion 42, thereby reducing the lens gap between the first lens component 21 and the second lens component 22. Here, the first elastic member 31 of the pop-out mechanism 30 provides a force opposite to the driving force of the first driving portion 41 and is compressed between the first lens component 21 and the second lens component 22. In operation, the first driving part 41 moves upward along the optical axis and gradually reduces or even completely eliminates the downward pressure. Therefore, under the elastic force of the pop-up mechanism 30, the first lens component 21 of the optical lens 20 moves towards the object side along the optical axis, increasing the lens gap between the first lens component 21 and the second lens component 22, and reaching the first position. In other words, the first driving part 41 and the pop-up mechanism 30 cooperate to drive the second driving part 42, together with the first lens component 21 arranged in the second driving part 42, to the first position along the optical axis of the optical lens 20. The second driving part 42 is configured to drive the first lens component 21 arranged in the second driving part 42 to move along the optical axis of the optical lens 20 during and / or after being driven to the first position by the first driving part 41, so as to achieve optical focusing. It should be noted that in the figures of this application, downward is generally the direction towards the image side, and upward is the direction towards the object side.

[0073] In some embodiments of this application, within a cross section perpendicular to the optical axis, with the intersection of the optical axis and this plane as the center, the second driving part 42 is disposed radially inside the first driving part 41. The second driving part 42 can drive the first lens component 21 to continue moving along the optical axis direction to achieve precise focusing of the telescopic camera module.

[0074] In this application, preliminary focusing refers to the second driving part 42 moving together with the first lens component 21 along the optical axis to a first position under the drive of the first driving part 41, enabling the photosensitive component 200 to form an image, or in other words, preparing the optical lens 20 to form an image. In this case, the objects driven by the first driving part 41 include the second driving part 42 and the optical lens 20, especially the first lens component 21 supported in the second driving part 42. Precision focusing refers to adjusting the distance between the first lens component 21 and the photosensitive component 200 according to the change in focus under the drive of the second driving part 42, moving the first lens component 21 along the optical axis to a second position, so that the subject remains in sharp focus. In this case, the second driving part 42 drives the optical lens 20, especially the first lens component 21 of the optical lens 20. The above description also applies to cases with multiple lens components, where the multiple lens components can be divided into two groups as needed, corresponding to the aforementioned first lens component 21 and second lens component 22 respectively.

[0075] Reference Figure 7-8 In some embodiments of this application, the size of the first lens component 21 is smaller than the size of the second lens component 22, or in other words, the maximum diameter of the first lens component 21 is smaller than the maximum diameter of the second lens component 22. For example, in some embodiments of this application, the maximum diameter of the first lens component 21 is 9.0mm-11.0mm, and the maximum diameter of the second lens component 22 is 16.5mm-18.5mm.

[0076] In some embodiments of this application, the maximum diameter of the first lens component 21 is 10.2 mm, and the maximum diameter of the second lens component 22 is 17.5 mm. In this application, the first lens component 21 is a mover, meaning it can be moved by a drive component, while the second lens component 22 is a stator, meaning it is fixed relative to the motor base, for example. The second drive portion 42 is disposed on the outer periphery of the first lens component 21 to drive the first lens component 21 to move relative to the second lens component 22 along the optical axis, thereby achieving precise focusing.

[0077] It is understandable that, due to the significant size difference between the first lens component 21 and the second lens component 22 in this application, placing the second driving portion 42 on the outer periphery of the first lens component 21 can reduce the occupancy of the second driving portion 42 on the lateral space of the telescopic lens, thereby reducing the lateral dimension of the telescopic lens. Furthermore, in some embodiments of this application, the full aperture size of the light-incident end of the first lens component 21 is smaller than the maximum diameter of the first lens component 21. Placing the second driving portion 42 on the side of the first lens component 21 near the light-incident end, i.e., on the upper-middle side of the first lens component 21, further reduces the occupancy of the second driving portion 42 on the lateral space of the telescopic lens, further reducing the lateral dimension of the telescopic lens. In some embodiments of this application, the full aperture size of the first lens component 21 is 6mm-8mm. In some embodiments of this application, the full aperture size of the first lens component 21 is 7.4mm.

[0078] Furthermore, in some embodiments of this application, both the second driving portion 42 and the first lens component 21 are disposed above the second lens component 22. That is, regardless of whether it is in the working state or not, the bottom surface of the second driving portion 42 is higher than the top surface of the second lens component 22. In other words, in both the working and non-working states of the telescopic lens, the bottom surface of the second driving portion 42 always maintains a certain distance from the top surface of the second lens component 22 along the optical axis direction of the optical lens 20.

[0079] In some embodiments of this application, the second drive portion 42 has a receiving cavity for accommodating the first lens component 21 of the optical lens 20, whereby the first lens component 21 can be supported in the second drive portion 42 and move together with the second drive portion 42 under the combined action of the first drive portion 41 and the pop-out mechanism 30.

[0080] In some embodiments of this application, the inner diameter of the accommodating cavity is between the maximum outer diameter of the first lens component 21 and the maximum outer diameter of the second lens component 22, thereby ensuring that the structural space of the telescopic lens transverse to the optical axis can be fully utilized, especially that other components can be optimally arranged, and thereby the structure and arrangement of the components of the telescopic lens can be optimally optimized, thereby ensuring the compact structure of the telescopic lens while ensuring imaging quality.

[0081] The inner diameter of the cavity of the second drive section 42 for accommodating the first lens component 21 of the optical lens 20 is limited to between the maximum outer diameter of the first lens component 21 and the maximum outer diameter of the second lens component 22. This ensures that the second drive section 42 can be optimally arranged in the structural space formed by the diameter difference of the different lens components, which not only effectively reduces the lateral size of the structure, but also facilitates the driving operation of the drive component and ensures good optical characteristics of the lens component.

[0082] In some embodiments of this application, in the projection plane perpendicular to the optical axis of the optical lens 20, the projection of the second driving portion 42 along the optical axis direction can at least partially overlap with the projection of the second lens component 22 along the optical axis direction. This is because as the size of the photosensitive chip 62 gradually increases, especially when the image plane size of the photosensitive chip 62 is greater than 0.78 inches, the lateral dimension (perpendicular to the optical axis direction) and the longitudinal dimension (along the optical axis direction) of the optical lens 20 both need to increase. Due to the limited height and lateral space of the camera module, it is impossible to meet the requirements for increasing the lateral and longitudinal dimensions of the optical lens 20. Therefore, in this application, the first driving portion 41 cooperates with the pop-up mechanism 30 to realize the extension and retraction of the first lens component 21, so as to reduce the height of the telescopic camera module in the non-working state. By setting the second driving portion 42 on the outer periphery of the first lens component 21 with a smaller maximum diameter, the lateral dimension of the telescopic camera module is reduced.

[0083] In some embodiments of this application, in the projection plane perpendicular to the optical axis of the optical lens 20, the projection of the outermost part of the second driving portion 42 along the optical axis direction may also fall within the projection of the maximum outer diameter of the second lens component 22 along the optical axis direction, or in other words, fall inside the projection of the outermost part of the second lens component 22 along the optical axis direction of the optical lens 20. That is, compared to the second lens component 22, the outermost part of the second driving portion 42 is closer to the optical axis, that is, the size of the second driving portion 42 in the radial direction perpendicular to the optical axis is smaller than that of the second lens component 22.

[0084] In another specific example of this application, in the projection plane perpendicular to the optical axis, the projection of the outermost part of the second driving part 42 along the optical axis can also coincide with the projection of the maximum outer diameter of the second lens component 22 along the optical axis, or in other words, coincide with the projection of the outermost part of the second lens component 22 along the optical axis of the optical lens 20. That is, the outermost part of the second driving part 42 and the outermost part of the second lens component 22 are at the same distance from the optical axis, or in other words, the size of the second driving part 42 in the radial direction perpendicular to the optical axis is basically equal to that of the second lens component 22.

[0085] In another specific example of this application, in the projection plane perpendicular to the optical axis, the projection of the outermost part of the second driving portion 42 along the optical axis can also fall outside the projection of the maximum outer diameter of the second lens component 22 along the optical axis, or in other words, it falls outside the projection of the outermost part of the second lens component 22 along the optical axis of the optical lens 20. That is, compared to the second lens component 22, the outermost part of the second lens component 22 is closer to the optical axis, or in other words, the dimension of the second driving portion 42 in the radial direction perpendicular to the optical axis is larger than that of the second lens component 22. In this case, one end of the support rod 32 can be fixed directly to the fixing base 417 of the first driving portion 41 instead of being fixed to the second lens barrel connected to the second lens component 22.

[0086] In another specific example of this application, the lateral dimension of the second drive part 42 is smaller than the lateral dimension of the second lens component 22. This arrangement makes full use of the outer peripheral space of the first lens component 21, which can not only reduce the lateral dimension of the telescopic lens, thereby reducing the lateral dimension of the telescopic camera module, but also make the structure of the telescopic lens more compact.

[0087] The telescopic camera module proposed in this application can be used as a telephoto camera module. During autofocus, conventional VCM motors cannot meet the autofocus travel requirements of the telescopic camera module. While conventional stepper motors can meet the travel requirements, their relatively large step angle limits their precision, resulting in insufficient accuracy when the telescopic camera module relies solely on stepper motors for autofocus, thus failing to achieve clear imaging. Therefore, this application incorporates two drive sections. The first drive section 41 generates a large drive travel, meeting the autofocus travel requirements of the telescopic camera module. The second drive section 42 has higher precision, providing a more accurate drive travel, ensuring clear imaging of the subject on the photosensitive element. The first drive element 412 of the first drive section 41 can be a piezoelectric motor or a stepper motor, etc., with a large drive travel. The second drive element 421 of the second drive section 42 can be a VCM motor, a shape memory alloy motor, etc., with higher precision; this application does not impose any limitations on this. This application uses stepper motors and VCM motors as examples for illustration.

[0088] like Figure 2As shown, in some embodiments of this application, the first driving part 41 includes a driving housing 411, a first driving element 412, a movable sleeve 413, and a fixed base 417. The driving housing 411 is sleeved on the fixed base 417, and the driving housing 411 and the fixed base 417 form a receiving space to accommodate the first driving element 412, the movable sleeve 413, and other components. Furthermore, the first driving element 412 is disposed on the fixed base 417 and is capable of driving the movable sleeve 413 to move along the optical axis within the receiving space.

[0089] Specifically, in some embodiments of this application, the fixing base 417 of the first driving part 41 includes a fixing base body, the middle of the fixing base body has a base through hole, the second lens component 22 is accommodated in the base through hole, and is fixed to the inner sidewall of the base through hole by the second lens barrel of the second lens component 22.

[0090] Specifically, in some embodiments of this application, the first driving element 412 further includes a driving mechanism 4121 and a transmission mechanism 4122. The driving mechanism 4121 is movably connected to the transmission mechanism 4122, and the transmission mechanism 4122 is movably connected to the movable sleeve 413. After the driving mechanism 4121 is energized, it drives the transmission mechanism 4122 to move, and the force generated by the first driving element 412 is transmitted to the movable sleeve 413 through the transmission mechanism 4122, thereby driving the movable sleeve 413 to move along the optical axis. The first driving element 412 in this application is described using a stepper motor as an example.

[0091] Specifically, in some embodiments of this application, the drive mechanism 4121 includes a drive device 41211, and the transmission mechanism 4122 includes a gear device 41221 and a transmission screw 41222. The gear device 41221 includes a first gear 412211 and a second gear 412212. The first gear 412211 is driveably connected to the drive device 41211, and the second gear 412212 is driveably connected to the transmission screw 41222. The first gear 412211 and the second gear 412212 mesh with each other to achieve force transmission. The drive device 41211 in the stepper motor controls the step angle of the stepper motor (the angle through which the rotor rotates for each input pulse signal is called the step angle) by controlling the electrical pulse signal applied to the motor coil. After providing an electrical pulse signal to the stepper motor drive device 41211, the first gear 412211 set on the drive device 41211 will rotate accordingly. The meshing between the first gear 412211 and the second gear 412212 drives the second gear 412212 to rotate. Since the transmission screw 41222 has a thread that can mesh with the second gear 412212, the force on the drive device 41211 can be transmitted to the transmission screw 41222.

[0092] Specifically, in some embodiments of this application, one end of the stepper motor is fixed to the fixed base 417 of the first drive portion 41. The stepper motor is fixedly connected to the bottom end of the fixed base 417 of the first drive portion 41 via a fixing part, and the first gear 412211 of the stepper motor is located between the fixed base 417 and the drive device 41211. That is, the drive device 41211, the gear device 41221, and the fixed base 417 of the stepper motor are arranged sequentially along the height direction of the telescopic lens to make full use of the height space of the telescopic lens. Here, the height direction refers to the direction along the optical axis. Furthermore, the fixed end of the stepper motor is located at the corner of the fixed base 417 of the first drive portion 41 to make the structure of the telescopic lens more compact.

[0093] like Figure 2 , Figure 7 and Figure 8 As shown, in some embodiments of this application, the transmission screw 41222 is movably connected to the movable sleeve 413. The movable sleeve 413 includes a sleeve body 4131, a sleeve movable part 4132, and a sleeve support part 4133. The sleeve body 4131 is disposed between the sleeve movable part 4132 and the sleeve support part 4133. The sleeve body 4131 is basically cylindrical and has a hollow structure, which forms a receiving cavity. The second driving part 42 and the first lens component 21 are placed in the receiving cavity of the sleeve body 4131. Further, in some embodiments of this application, the sleeve movable part 4132 is disposed at the bottom of the sleeve body 4131, and the sleeve support part 4133 is disposed at the top of the sleeve body 4131. The movable sleeve 413 is movably connected to the transmission screw 41222 through the sleeve movable part 4132. In some embodiments of this application, the drive housing 411 has an opening 4111 in the middle, the diameter of which is larger than the diameter of the sleeve body 4131, so that the sleeve body 4131 can move within the opening 4111 under the drive of the first drive element 412.

[0094] Specifically, in some embodiments of this application, the telescopic lens further includes a transparent cover plate 10. The transparent cover plate 10 is disposed on the light-incident side of the optical lens 20 and is fixed to the sleeve support portion 4133 so as to move with the movement of the movable sleeve 413. In some embodiments of this application, the top surface of the transparent cover plate 10 is not higher than the top surface of the sleeve support portion 4133, which not only protects the optical lens 20 but also prevents an increase in the height of the telescopic lens. Furthermore, the transparent cover plate 10 can form a closed space with the movable sleeve 413 to accommodate the second drive portion 42 and the optical lens 20, avoiding contamination from dust or water.

[0095] Specifically, in some embodiments of this application, the movable sleeve 4132 is provided with a first movable connecting end 41321, which has threads. The movable sleeve 413 moves along the optical axis through the engagement between the threads and the threads on the transmission screw 41222. In some embodiments of this application, the movable sleeve 413 is typically made of plastic, and the transmission screw 41222 is typically made of metal. When the two move against each other, debris may be generated. To solve the above problems, in other embodiments of this application, a transmission member 413211, especially a metal transmission member, can also be provided in the first movable connection end 41321. The outer surface of the transmission member 413211 is fixedly connected to the inner surface of the first movable connection end 41321. The inner surface of the transmission member 413211 has a threaded structure so that the thread of the transmission member 413211 and the thread of the transmission screw 41222 cooperate with each other to realize that the transmission member 413211 drives the movable sleeve 413 to move along the optical axis direction. Since the transmission screw 41222 and the movable sleeve 413 are connected by a thread, the self-locking function of the first driving part 41 can be realized. That is, when the transmission screw 41222 rotates, it can drive the movable sleeve 413 to move along the optical axis; when the transmission screw 41222 stops rotating, the movable sleeve 413 will also stop moving. And because of the existence of the thread, the movable sleeve 413 will not continue to move due to sliding friction, so that the movable sleeve 413 can be maintained at a certain height, thus realizing the self-locking function of the first driving part 41.

[0096] More specifically, in some embodiments of this application, the first driving portion 41 further includes a guide member, wherein the guide member includes a main guide rod 4151 and a secondary guide rod 4152. The main guide rod 4151 and the secondary guide rod 4152 are precisely positioned to guide the optical lens 20 when it moves in the optical axis direction, and their axes are parallel to the optical axis of the optical lens 20. Further, in some embodiments of this application, the movable sleeve portion 4132 of the movable sleeve 413 is provided with a second movable connecting end 41322 and a third movable connecting end 41323. The second movable connecting end 41322 and the third movable connecting end 41323 are through holes or grooves, so that the main guide rod 4151 and the secondary guide rod 4152 can be inserted into the second movable connecting end 41322 and the third movable connecting end 41323 respectively, and slide within them. The main guide rod 4151, for support and guidance purposes, is located next to the transmission screw 41222; that is, the main guide rod 4151, the stepper motor drive unit 41211, and the transmission screw 41222 are located on the same side of the telescopic lens. The auxiliary guide rod 4152 prevents unwanted rotational movement of the movable sleeve 413 around the optical axis. Therefore, it can be located on the side opposite the stepper motor, or on the side of the optical axis of the optical lens 20 opposite to the main guide rod 4151. For details, please refer to [link to relevant documentation]. Figure 9 The orientation relationship is indicated by the dashed line L. When the stepper motor is positioned at one corner of the telescopic lens, the auxiliary guide rod 4152 is positioned at the opposite corner of the telescopic lens. That is, the auxiliary guide rod 4152 and the main guide rod 4151 are located on different sides of the telescopic lens, thereby providing torque to prevent the movable sleeve 413 from rotating relative to the main guide rod 4151. One end of the main guide rod 4151 and the auxiliary guide rod 4152 are fixed to the fixed base 417 of the first drive part 41, and the other end is fixed to the drive housing 411, so that the main guide rod 4151 and the auxiliary guide rod 4152 can be stably set inside the telescopic lens.

[0097] It is worth mentioning that in some embodiments of this application, the movable sleeve 413 is typically made of plastic, and the main guide rod 4151 is typically made of metal. When the two move against each other through friction, debris may be generated. To solve this problem, in other embodiments of this application, a metal connector 413221 can be provided inside the second movable connecting end 41322. The outer surface of the connector 413221 is fixedly connected to the inner surface of the second movable connecting end 41322. The connector 413221 can also be constructed as a through hole or a groove, allowing the main guide rod 4151 to be inserted into the connector 413221 and slide within it. In other words, the connector 413221 is positioned inside the second movable connecting end 41322, allowing direct frictional contact between the connector 413221 and the main guide rod 4151. Preferably, the connector 413221 is made of metal, which helps prevent debris generation during its contact with the main guide rod 4151.

[0098] Specifically, in some embodiments of this application, the movable sleeve 413 further includes a sleeve protrusion 4134, which is disposed on the sleeve support portion 4133 and extends in the image-side direction within the receiving cavity of the sleeve body 4131. For this purpose, please refer to... Figure 7-8 The diagram illustrates the process of the telescopic lens entering a non-working state as follows: The movable sleeve 413 moves towards the image side under the drive of the first driving component. The sleeve protrusion 4134 of the movable sleeve 413 contacts the second driving part 42. The first driving component 412 drives the movable sleeve 413 to continue moving downward along the optical axis, i.e., towards the image side. The sleeve protrusion 4134 abuts against the second driving part 42, thereby driving the second driving part 42 and the first lens component 21 supported in the second driving part 42 to move downward. This reduces the lens gap between the first lens component 21 and the second lens component 22. At the same time, the first elastic member 31 of the pop-out mechanism 30 is also compressed, thereby reducing the overall height of the telescopic lens in the non-working state. The process of the telescopic lens entering the working state is as follows: the first driving element 412 drives the movable sleeve 413 to move upward along the optical axis, that is, towards the object side. The pressure exerted on the second driving part 42 by the sleeve protrusion 4134 decreases until it disengages from the second driving part 42 and the contact pressure disappears. At the same time, the first elastic member 31 of the pop-out mechanism 30 drives the second driving part 42 and the first lens component 21 to move upward along the optical axis, that is, towards the object side, so that the first lens component 21 pops out for preliminary focusing.

[0099] Figure 4 and Figure 5The different states of the second drive section 42 in its non-operating and operating states are shown respectively, including the stop mechanism 418 supporting the second drive section 42 and the first lens component 21 arranged in the second drive section 42. Figure 5 The telescopic lens is shown in its working state. At this time, the second drive section 42, the first lens component 21, and the second stop movable part 4182 are extended relative to the first stop fixed part 4181. Figure 4 The telescopic lens is shown in its non-working state, in which the second drive part 42, the first lens component 21, and the second stop movable part 4182 are retracted into the first stop fixed part 4181.

[0100] In some embodiments of this application, the inner wall of the sleeve protrusion 4134 forms a sleeve through hole 41342, the diameter of which is larger than the diameter of the end face of the first lens component 21, so that after initial focusing, the first lens component 21 still has enough space to move along the optical axis, allowing the second drive part 42 to continue to drive the first lens component 21 to move along the optical axis to achieve precise focusing.

[0101] It is understood that, in some embodiments of this application, viewed along the optical axis, the second driving portion 42 is disposed between the sleeve protrusion 4134 and the pop-up mechanism 30. Alternatively, the second driving portion 42 utilizes the cooperation between the sleeve protrusion 4134 of the movable sleeve 413 and the pop-up mechanism 30 to achieve movement of the second driving portion 42 along the optical axis. The sleeve protrusion 4134 of the movable sleeve 413 and the pop-up mechanism 30 are disposed opposite each other along the optical axis. On the one hand, this improves the parallelism of the second driving portion 42, providing stable support for the second driving portion 42 during movement and preventing dynamic tilting. On the other hand, viewed along the optical axis, the pop-up mechanism 30 is disposed between the second driving portion 42 and the second lens component 22, preventing the second driving portion 42 from colliding with the second lens component 22 when the telescopic lens is in the retracted state, thus avoiding damage to the optical lens 20.

[0102] Figure 3 Is it like this? Figure 2The exploded view of the second driving portion 42 together with the stop mechanism 418 supporting the second driving portion 42 is shown in the figure. In some embodiments of this application, the first driving portion 41 further includes the stop mechanism 418. The stop mechanism 418 includes a first stop fixing part 4181 and a second stop movable part 4182. The first stop fixing part 4181 is disposed on the fixing base 417 of the first driving portion 41, and the second stop movable part 4182 is disposed on the second driving portion 42. The first stop fixing part 4181 and the second stop movable part 4182 cooperate with each other to limit the movement of the second driving portion 42. (See also...) Figure 7 and 8 Viewed in a direction perpendicular to the optical axis, the stop mechanism 418 can be disposed between the first drive part 41 and the second drive part 42, or between the movable sleeve 413 of the first drive part 41 and the second drive part 42.

[0103] In some embodiments of this application, the first stop fixing part 4181 extends upward from the inner sidewall of the fixing base 417. The interior of the first stop fixing part 4181 is a hollow structure, and its top is provided with an inwardly extending first stop block 41811. The second stop movable part 4182 is disposed inside the first stop fixing part 4181. The second stop movable part 4182 includes a stop movable part body 41821, a stop movable part through hole 41822, and a stop movable part support 41823. The stop movable part through hole 41822 is disposed in the middle of the stop movable part body 41821. The size of the stop movable part through hole 41822 is larger than the maximum outer diameter of the first lens component 21, so that the first lens component 21 can move along the optical axis direction within the stop movable part through hole 41822 without interference. The stop movable part support column 41823 extends upward along the outer side wall of the stop movable part body 41821 in the height direction, and the second drive part 42 is supported on the stop movable part body 41821.

[0104] Specifically, in some embodiments of this application, the pop-out mechanism 30 is disposed between the second lens component 22 and the second stop movable part 4182, wherein one end of the support rod 32 is fixedly connected to the second lens barrel of the second lens component 22, and the other end of the support rod 32 is movably connected to the second stop movable part 4182. In some embodiments of this application, the stop movable part support column 41823 has a through hole, and the other end of the support rod 32 is sleeved in the stop movable part support column 41823 through the through hole, so that the second stop movable part 4182 can move along the optical axis direction along the support rod 32. Figure 2 In the illustrated embodiment, four through holes are provided in the stop movable part support column 41823, and four support rods 32 are respectively inserted into them.

[0105] Furthermore, one end of the first elastic member 31 of the pop-up mechanism 30 is fixedly connected to the top of the second lens component 22, and the other end of the first elastic member 31 is fixedly connected to the stop movable part support column 41823. When the stop movable part moves along the optical axis, it will cause the first elastic member 31 to deform due to compression or stretching. Further, in some embodiments of this application, the first elastic member 31 of the pop-up mechanism 30 can extend upward into the interior of the stop movable part support column 41823 to increase the length of the first elastic member 31, so that the first elastic member 31 can generate greater elastic force after being compressed. In some embodiments of this application, the number of pop-up mechanisms 30 is at least three, and the number of stop movable part support columns 41823 is the same as the number of pop-up mechanisms 30, with at least three stop movable part support columns 41823, so that the second stop movable part 4182 is subjected to more stable driving and support during movement.

[0106] Specifically, in some embodiments of this application, during the upward movement of the second stop movable part 4182 along the optical axis, the stop movable part body 41821 of the second stop movable part 4182 contacts the first stop block 41811 of the first stop fixed part 4181 to limit the movement of the second stop movable part 4182. In some embodiments of this application, in the non-working state, the first driving element 412 drives the movable sleeve 413 to move downward along the optical axis, the sleeve protrusion 4134 abuts against the second driving part 42, and the sleeve protrusion 4134 generates downward pressure at the point where it abuts against the second driving part 42, thereby driving the second driving part 42 and the second stop movable part 4182 to move downward. The second stop movable part 4182 moves downward to compress the first elastic member 31, separating the stop movable part body 41821 from the first stop block 41811. That is, the top surface of the stop movable part body 41821 is lower than the bottom surface of the first stop block 41811, and the two do not contact each other. In the working state, the first driving element 412 drives the movable sleeve 413 to move upward along the optical axis. The pressure generated by the sleeve protrusion 4134 abutting against the second driving part 42 is reduced until it is canceled. At the same time, the first elastic member 31 drives the second stop movable part 4182 to move upward along the optical axis through its elastic force. During this process, the second driving part 42 always remains in contact with the sleeve protrusion 4134. When the stop movable part body 41821 contacts the first stop block 41811, the movement of the second stop movable part 4182 is restricted by the first stop fixing part 4181 and cannot continue to move upward. Furthermore, the first driving element 412 continues to drive the movable sleeve 413 to move upward, so that a certain gap is generated between the bottom surface of the sleeve protrusion 4134 of the movable sleeve 413 and the bottom surface of the second driving part 42. This can prevent the second driving part 42 and the optical lens 20 from tilting when the stepper motor is driven, and form a favorable heat dissipation cavity inside the telescopic lens.

[0107] More specifically, in some embodiments of this application, the stop-moving part support 41823 of the second stop-moving part 4182 has a certain gap with the side wall of the second driving part 42. It is understood that the stop-moving part body 41821 of the second stop-moving part 4182 can also have a certain gap with the bottom surface of the second driving part 42. This is because the optical lens 20 in this application is a split lens. During assembly, the second driving part 42 and the first lens component 21 are first assembled into a semi-finished product, and then the semi-finished product and the second lens component 22 are adjusted in at least one direction to meet the imaging requirements of the telescopic camera module. In this application, a certain adjustment gap is left between the side and bottom of the second lens component 22 and the second stop-moving part 4182 to facilitate active calibration during subsequent assembly.

[0108] Furthermore, in some embodiments of this application, the movable sleeve 413 may further include a second elastic member 4135, which provides a buffering effect. Specifically, a second elastic member 4135 is provided between the second movable connecting end 41322 of the sleeve movable part 4132 of the movable sleeve 413 and the connecting member 413221. One end of the second elastic member 4135 is fixedly connected to the main guide rod 4151, and the other end of the second elastic member 4135 is fixedly connected to the second movable connecting end 41322 and the connecting member 413221. In some embodiments of this application, the second elastic member 4135 is a spring. When the telescopic lens is in working condition, the second movable connecting end 41322 of the movable sleeve 413 can drive the second elastic member 4135 and the connecting member 413221 to move upward along the main guide rod 4151, and exert a certain amount of pressure on the second elastic member 4135. The elastic force of the second elastic member 4135 provides a certain buffering effect on the movement of the movable sleeve 413. When the telescopic lens is not in operation, the second movable connecting end 41322 of the movable sleeve 413 can drive the second elastic member 4135 and the connecting member 413221 to move downward along the main guide rod 4151, and generate a certain stretch on the second elastic member 4135. The reaction force of the second elastic member 4135 provides a certain buffering effect on the movement of the first carrier. Of course, in other embodiments of this application, the second elastic member 4135 can also be disposed on the secondary guide rod 4152, and this application does not limit this.

[0109] like Figure 2 As shown, in some embodiments of this application, the first driving part 41 further includes a waterproof and dustproof sleeve 414. One end of the waterproof and dustproof sleeve 414 is fixed to the bottom surface of the driving housing 411, and the other end is fixed to the top surface of the sleeve movable part 4132 of the movable sleeve 413. The waterproof and dustproof sleeve 414 is an integral foldable sleeve between its two ends, and is made of a flexible material. In some embodiments of this application, the two ends of the waterproof and dustproof sleeve 414 are made of metal, and the middle is made of rubber. Of course, in another specific example of this application, the two ends and the middle of the waterproof and dustproof sleeve 414 can also be made of the same material, namely rubber. When the telescopic lens is in the working state, the movable sleeve 413 moves upward along the optical axis, squeezing the waterproof and dustproof sleeve 414 to make it in a contracted state; when the telescopic lens is in the non-working state, the movable sleeve 413 moves downward along the optical axis, stretching the waterproof and dustproof sleeve 414 to make it in an extended state.

[0110] Specifically, in some embodiments of this application, the drive housing 411 and the waterproof and dustproof cover 414 house the first drive element 412 in a closed space to prevent dust or moisture and other impurities from entering the telescopic lens, thereby achieving the effect of waterproofing and dustproofing.

[0111] In some embodiments of this application, the first driving portion 41 further includes a first sensing component for sensing the movement position of the retractable lens. The first sensing component includes a first position sensing magnet and a first position sensing element. The first position sensing magnet is disposed on the movable sleeve 413, and the first position sensing element is disposed on the fixed base 417 of the first driving portion 41, with the first position sensing magnet and the first position sensing element positioned opposite each other. In some embodiments of this application, the first position sensing magnet can move along the optical axis with the movable sleeve 413. By sensing the magnetic field strength of the first position sensing magnet through the first position sensing element, the position of the movable sleeve 413 can be determined, thereby driving the movable sleeve 413 to move to the desired position. This achieves focusing by controlling the driving component according to a predetermined focusing program. In some embodiments of this application, the first position sensing magnet is a magnetic mountain composed of multiple stacked magnets to accommodate the large movement stroke of the retractable lens. In this application, the first position sensing element can be a Hall element, a driving IC, or a TMR.

[0112] Furthermore, in some embodiments of this application, the first driving portion 41 further includes a first electrical connection portion. In some embodiments of this application, to facilitate circuit conduction, the first electrical connection portion is integrally formed into the fixing base 417 of the first driving portion 41 using insert molding technology, and is connected to the outside of the telescopic lens through the fixing base 417. In another specific example of this application, at least two LDS grooves can be provided on the surface of the fixing base 417 of the first driving portion 41. LDS (laser direct forming technology) is used in the grooves, and a conductive plating layer (e.g., a nickel-palladium-gold plating layer) is plated on the surface of the LDS grooves, thereby avoiding interference from other internal metals and realizing circuit conduction. In another specific example of this application, the first electrical connection portion extends downward to the circuit board 61 of the photosensitive component 200, and conduction with the external circuit is achieved through the circuit board 61 of the photosensitive component 200. This application does not limit this aspect.

[0113] Combination Figures 4 to 5The second driving section 42 will now be described. As previously mentioned, the first lens component 21 can be disposed within the second driving section 42 and driven by the second driving section 42 to move along the optical axis for precise focusing. Specifically, in some embodiments of this application, the second driving section 42 includes a second driving element 421, a movable carrier 422, a fixed carrier 423, and a magnetic suction member 426. The fixed carrier 423 includes a base 4231 and a shell, with the shell fitted onto the base 4231 to house the second driving element 421, the movable carrier 422, the magnetic suction member 426, and other components of the second driving section 42. Here, the shell of the fixed carrier 423 can also serve as the outer casing of the entire second driving section 42. The fixed carrier 423 of the second driving part 42 can be constructed as a stator. The base 4231 of the fixed carrier 423 of the second driving part 42 can be disposed on the second stop movable part 4182 of the stop mechanism 418 of the first driving part 41, so that the second driving part 42 can move with the movement of the second stop movable part 4182 of the stop mechanism 418 of the first driving part 41 to achieve preliminary focusing. When the second stop movable part 4182 of the stop mechanism 418 of the first driving part 41 stops moving, the driving force generated by the second driving element 421 of the second driving part 42 can continue to drive the movable carrier 422 of the second driving part 42 to adjust and move along the optical axis direction to achieve precision focusing. The first lens component 21 is disposed in the movable carrier 422 of the second driving part 42. When the second driving element 421 of the second driving part 42 drives the movable carrier 422 of the second driving part 42 to move along the optical axis direction, the first lens component 21 disposed in the second driving part 42 can also move accordingly.

[0114] Specifically, in some embodiments of this application, the second drive element 421 of the second drive section 42 is described using a VCM motor as an example. See, for example, [link to relevant documentation]. Figure 6 The second driving element 421 of the second driving section 42 includes at least one focusing coil 4212 and at least one focusing magnet 4211. The at least one focusing coil 4212 is disposed on the inner sidewall of the outer shell of the fixed carrier 423 of the second driving section 42, and the at least one focusing magnet 4211 is disposed on the fixed carrier 423 of the second driving section 42, and is disposed opposite to the at least one focusing coil 4212. Here, the at least one focusing magnet 4211 can be disposed on the side of the movable carrier 422 or at the corner of the fixed carrier 423, as long as it is disposed opposite to the at least one focusing coil 4212; this application does not impose any limitation. In other embodiments of this application, the positions of the at least one focusing coil 4212 and the at least one focusing magnet 4211 can be interchanged, that is, the at least one focusing coil 4212 is disposed on the movable carrier 422, and the at least one focusing magnet 4211 is disposed on the fixed carrier 423.

[0115] Specifically, see Figure 9 In some embodiments of this application, the movable carrier 422 of the second driving part 42 is constructed with a polygonal shape, including at least four sides and at least four corners, wherein the movable carrier 422 has a chopped edge at at least one of the four corners. In some embodiments of this application, the movable carrier 422 includes a first side 4221 and a second side 4223, the first side 4221 and the second side 4223 are not parallel to each other and form a certain angle. The movable carrier 422 also includes a third side 4222, the two ends of the third side 4222 are respectively connected to the first side 4221 and the second side 4223, and the third side 4222 is not parallel to the first side 4221 and the second side 4223 and forms a certain angle. Further, the number of chopped edges is greater than one. In another specific example of this application, the number of chopped edges is four, that is, all four corners of the movable carrier 422 are chopped, in which case the movable carrier 422 has an octagonal structure. It is worth mentioning that, since the movable carrier 422 of the second driving part 42 is movably disposed in the fixed base 417 of the first driving part 41, the shape of the fixed carrier 423 of the second driving part 42 is adapted to the shape of the movable carrier 422. That is, the fixed carrier 423 of the second driving part 42 also includes a first side, a second side, and a third side, and the first side, the second side, and the third side of the fixed carrier 423 are opposite to the first side 4221, the second side 4223, and the third side 4222 of the movable carrier 422 of the second driving part 42. In short, the above description of the external features of the movable carrier 422 also applies at least partially to the fixed carrier 423.

[0116] In some embodiments of this application, the second driving portion 42 is disposed inside the movable sleeve 413. The size and shape of the second driving portion 42 are mainly influenced by the movable carrier 422 and the fixed carrier 423. In some embodiments of this application, the cross-section of the second driving portion 42 is polygonal, and the cross-section of the movable sleeve 413 is the circumcircle of the polygon. When the number of sides of the movable carrier 422 is smaller, the size of the outer movable sleeve 413 needs to be larger. Therefore, in order to reduce the lateral dimension of the second driving portion 42, in this application, the corners of the movable carrier 422 are chamfered to increase the number of sides of the movable carrier 422, thereby reducing the lateral dimension of the movable sleeve 413. Of course, it can be understood that when the shape of the movable carrier 422 is close to a circle, its space utilization rate within the movable sleeve 413 is maximized. In some embodiments of this application, the cross-sectional shape of the movable carrier 422 is set to an octagon to reduce the lateral dimension of the second driving portion 42. In another specific example of this application, the cross-sectional shape of the movable carrier 422 can be a hexadecimal shape, etc., and this application does not impose any limitations on this. Correspondingly, the shape and size of the movable sleeve 413 can be constructed according to the size and shape of the second drive part 42, especially according to the size and shape of the fixed carrier 423 and the movable carrier 422. Optionally, the movable sleeve 413 can be constructed with an internal polygon that matches the second drive part 42 and an external circle. Further optionally, the movable sleeve 413 can be integrally constructed with the outer shell of the second drive part 42.

[0117] Specifically, in some embodiments of this application, the number of focusing coil 4212 and focusing magnet 4211 are both two. (See reference...) Figure 9 The dotted octagon in the diagram allows for the placement of a first focusing magnet on the first side 4221 of the movable carrier 422, and a second focusing magnet on the second side 4223 of the movable carrier 422. A first focusing coil is positioned on the first side 4221 of the fixed carrier 423, and a second focusing coil is positioned on the second side 4223 of the fixed carrier 423, with the two coils and magnets positioned opposite each other. When the first side 4221 and the second side 4223 are perpendicular to each other at a 90-degree angle, that is, when the first focusing actuator (composed of the first focusing coil and the first focusing magnet) and the second focusing actuator (composed of the second focusing coil and the second focusing magnet) form a 90-degree angle, a thrust is generated during the driving process to balance the movable carrier 422, thereby reducing tilting during the driving process.

[0118] In some embodiments of this application, when viewed in cross-section of the telescopic lens, the first driving element 412 of the first driving portion 41 and the second driving element 421 of the second driving portion 42 are arranged offset from each other. Alternatively, in a projection plane perpendicular to the optical axis of the optical lens 20, the first driving element 412 of the first driving portion 41 and the second driving element 421 of the second driving portion 42 are not on the same straight line passing through the optical axis. (Refer to...) Figure 9 The first driving element 412 of the first driving section 41, such as a stepper motor, is positioned on the dotted line L passing through the optical axis. The second driving element 421 of the second driving section 42, however, should avoid the dotted line L and be positioned in another location, such as on the other side of the octagon shown by the dotted line that is not crossed by the dotted line L, thus avoiding direct radial opposition to the first driving element 412 of the first driving section 41. This arrangement allows for full utilization of the internal structural space of the telescopic lens, minimizing its structural dimensions. It also provides clearance for other components such as the stepper motor and guide members, further optimizing the overall structure of the telescopic lens while ensuring its imaging quality.

[0119] In some embodiments of this application, the edge of the second driving portion 42 is parallel to the edge of the telescopic lens. When the first driving element 412 is a stepper motor, the first driving element 412 is positioned at one corner of the telescopic lens, and the second driving element 421 is positioned at at least one edge of the telescopic lens. This is because stepper motors are relatively large, and this arrangement provides some clearance for the placement of the first driving element 412, and also makes the structure of the telescopic lens more compact. The edge of the second driving portion 42 and the edge of the telescopic lens can refer to the side of the polygonal shape of its housing in a cross-section perpendicular to the optical axis, and the two sides connected form an angle. For example, in... Figure 9 In the cross-section shown, the stepper motor is positioned at one corner of the quadrilateral cross-section of the telescopic lens.

[0120] In some embodiments of this application, in a cross section perpendicular to the optical axis of the optical lens 20, the second driving portion 42 has a polygonal shape, wherein the side of the second driving portion 42 corresponding to the position of the first driving element 412 of the first driving portion 41 is different from the side of the second driving portion 42 corresponding to the second driving element 421, that is, they are not the same side.

[0121] Specifically, in some embodiments of this application, the stepper motor corresponds to a cut edge of the movable carrier 422 or the fixed carrier 423, and the second driving element 421 is disposed on the two sides of the movable carrier 422 or the fixed carrier 423 adjacent to this cut edge. It should be noted that a cut edge of the movable carrier 422 or the fixed carrier 423 can also be understood as the side of the polygonal shape of the movable carrier 422 or the fixed carrier 423 in a cross-section perpendicular to the optical axis. Alternatively, it can be said that the second driving part as a whole has a polygonal shape, wherein the side of the second driving part corresponding to the stepper motor ( Figure 9 The side of the dashed octagon directly facing the stepper motor (the side through which the dashed line L passes) is not parallel to the side of the second driving portion corresponding to the second driving element 421. In other words, the side of the second driving portion corresponding to the second driving element 421 can only be... Figure 9 The sides of the dashed octagon shown are those not crossed by the dashed line L. This arrangement makes full use of the space within the telescopic lens while also providing some clearance for the stepper motor and guide components.

[0122] Specifically, in some embodiments of this application, when viewed in cross-section of the telescopic lens, the first driving element 412 of the first driving portion 41 and the second driving element 421 of the second driving portion 42 are arranged on opposite sides, or staggered from each other. For example, the second driving portion 42 has a polygonal structure in shape, wherein the side of the second driving portion 42 closest to the first driving element 412 of the first driving portion 41 is not the same side as the side where the second driving element 421 is located. Alternatively, the distance from the first driving element 412 of the first driving portion 41 to the plane containing the nearest side of the second driving portion 42 is smaller than the distance from the first driving element 412 of the first driving portion 41 to the plane where the second driving element 421 is located on the second driving portion 42. In other words, the first driving element 412, such as a stepper motor, and the second driving element 421, such as including a focusing coil 4212 and a focusing magnet 4211, are arranged as far apart as possible from each other in the projection plane perpendicular to the optical axis, rather than close to each other. This configuration not only achieves the aforementioned beneficial effects, but also further avoids magnetic interference between the first driving element 412 and the second driving element 421.

[0123] Figure 6 This is a schematic diagram showing the positional relationship of the main components of the second driving element 421 in the second driving section 42. It schematically illustrates the structure and relative positional relationship of the main components of the second driving element 421, including the focusing substrate 427, focusing magnet 4211, focusing coil 4212, magnetic attracting magnet 4261, and first magnetic yoke 4262. Figure 6As shown, in some embodiments of this application, the magnetic attraction component 426 includes a magnetic magnet 4261 and a first magnetic yoke 4262. The magnetic magnet 4261 and the first magnetic yoke 4262 are arranged opposite to each other so that the magnetic attraction between the magnetic magnet 4261 and the first magnetic yoke 4262 can cause the first lens component 21 of the optical lens 20 to return to its initial position (the initial position refers to the initial position of the optical lens 20) after movement. In some embodiments of this application, the magnetic magnet 4261 is disposed on the movable carrier 422, and the first magnetic yoke 4262 and the magnetic magnet 4261 are disposed opposite to each other on the fixed carrier 423. That is, the magnetic magnet 4261 can move with the movable carrier 422. After the focusing coil 4212 is de-energized, the magnetic attraction between the magnetic magnet 4261 and the first magnetic yoke 4262 causes the movable carrier 422 to return to its initial position.

[0124] Optionally, an iron sheet 4263 may be provided on the side of the focusing substrate (FPC) 427 opposite to the focusing coil 4212. The iron sheet 4263 on the back side of the focusing substrate 427 opposite to the focusing coil 4212 is used to increase strength. Further optionally, an iron sheet 4264, such as a magnetic conductive sheet, may also be provided on the back side of the focusing magnet 4211 to constrain the magnetic field size, enhance its strength, and reduce magnetic field overflow.

[0125] Specifically, in some embodiments of this application, the magnetic attracting magnet 4261 is disposed on the third side 4222 of the movable carrier 422, and the first magnetic yoke 4262 is disposed on the third side of the fixed carrier 423 opposite to it. That is, viewed circumferentially around the optical axis, the magnetic attracting magnet 4261 is disposed between the first focusing magnet and the second focusing magnet, and the first magnetic yoke 4262 is disposed between the first focusing coil and the second focusing coil. Alternatively, the magnetic attracting member 426 is disposed in the middle region of the adjacent surfaces of the driving portions containing at least two sets of coils and at least two sets of magnets. In some embodiments of this application, the magnetic attracting member 426 and the first driving element 412 are disposed on opposite sides, or staggered from each other. That is, the cut edge of the second driving portion 42 where the magnetic attracting member 426 is located is not the same cut edge as the cut edge of the second driving portion 42 corresponding to the first driving element 412, to avoid magnetic interference between the magnetic attracting member 426 and the first driving element 412.

[0126] Specifically, in some embodiments of this application, since the third side has a certain angle with both the first and second sides, the second driving element 421 and the magnetic attraction member 426 also form a certain angle in the cross-section perpendicular to the optical axis. In other words, the direction of the magnetic attraction force generated between the magnetic magnet 4261 and the first magnetic yoke 4262 is not orthogonal to the direction of the driving force generated by the focusing magnet 4211 and the focusing coil 4212 on the plane where the driving force is located. The plane where the driving force is located refers to the plane where the focusing coil 4212 or the focusing magnet 4211 is located along the optical axis. The horizontal direction refers to the direction within the plane perpendicular to the optical axis.

[0127] In some embodiments of this application, such as Figure 3 As shown, a support component 424 is provided between the movable carrier 422 and the fixed carrier 423 so that the movable carrier 422 is always supported and guided when it moves relative to the fixed carrier 423, and the friction between the movable carrier 422 and the fixed carrier 423 can also be reduced.

[0128] Specifically, in some embodiments of this application, at least two extension columns 42311 extend upward from the base 4231 of the fixed carrier 423. A support component 424 is clamped between the at least two extension columns 42311 and the movable carrier 422. A track is provided between the at least two extension columns 42311 and the movable carrier 422 to accommodate the support component 424. In some embodiments of this application, the number of support components 424 is two, and the corresponding number of tracks is also two, the same as the number of support components 424. The tracks include a first track and a second track. In some embodiments of this application, the movable carrier 422 may further include a fourth side and a fifth side. One end of the fourth side is connected to the second side, and one end of the fifth side is connected to the first side. Furthermore, the fourth side and the second side are not parallel to each other and form a certain angle, the fifth side is not parallel to each other and forms a certain angle, and the fourth side, fifth side, and third side are also not parallel to each other and form a certain angle. The first track is disposed on the fourth side, and the second track is disposed on the fifth side. Of course, in other embodiments of this application, a sixth, seventh, or eighth side may also exist, so that the movable carrier 422 is hexagonal, heptagonal, octagonal, etc., and this application does not impose any limitations. From an overall perspective, the fourth and fifth sides are cut edges formed at the corners of the movable carrier 422.

[0129] Specifically, in some embodiments of this application, the support component 424 can be configured as a guide rod 4243, which not only reduces the overall height of the second drive portion 42 but also prevents the movable carrier 422 from dynamically tilting during movement. Of course, in other embodiments of this application, the support component 424 can also be configured as a ball bearing or a slider; this application does not limit this. It is worth mentioning that in this application, the support component 424 is positioned at the corner of the second drive portion 42, which not only makes full use of the empty space at the corner of the second drive portion 42 but also allows for a greater wall thickness for both the fixed carrier 423 and the movable carrier 422 at the corner, preventing breakage during track formation. Here, the magnetic attraction component can also use magnetic attraction to keep the support component 424 always clamped between the fixed carrier 423 and the movable carrier 422.

[0130] Furthermore, in some embodiments of this application, the second driving portion 42 further includes a second electrical connection portion 427. The second electrical connection portion 427 may be a focusing substrate (FPC), wherein the focusing substrate 427 is disposed on the inner side of the housing, and the focusing coil 4212 can be disposed on the focusing substrate 427 and disposed on the side facing the focusing magnet 4211, so as to simplify the electrical connection structure of the second driving portion 42 and realize the circuit conduction of the focusing coil 4212 through the focusing substrate 427. In some embodiments of this application, the second electrical connection portion 427 may extend downward to the fixing base 417 of the first driving portion 41 to realize circuit conduction with the first electrical connection portion on the fixing base 417 of the first driving portion 41. Of course, in other embodiments of this application, the second electrical connection portion 427 may also use other methods to realize circuit conduction, and this application does not limit this.

[0131] It is worth mentioning that, in some embodiments of this application, the second driving portion 42 further includes a second position sensing element, which is disposed on the side of the focusing substrate 427 facing the magnetic magnet 4261. The magnetic magnet 4261 can move along the optical axis with the movable carrier 422. By sensing the strength of the magnetic field of the magnetic magnet 4261 through the second position sensing element, the position of the movable carrier 422 can be determined, thereby driving the movable carrier 422 to move to the desired position. In this application, the second position sensing element can be a Hall element, a driving IC, or a TMR.

[0132] Specifically, in some embodiments of this application, the first magnetic yoke 4262 is disposed on the focusing substrate 427, and the first magnetic yoke 4262 can be disposed on the focusing substrate 427 corresponding to the position of the magnetic attracting stone 4261. For example... Figure 6As shown, the first magnetic yoke 4262 can be disposed on the front side of the focusing substrate 427 facing the magnetic attracting stone 4261, or on the inner side of the focusing substrate 427; optionally, the first magnetic yoke 4262 can also be disposed on the back side of the focusing substrate 427 opposite to the magnetic attracting stone 4261, or on the outer side of the focusing substrate 427. Furthermore, the focusing substrate 427 is connected to at least two focusing coils 4212, and the first magnetic yoke 4262 is disposed in the middle region of the two focusing coils 4212 on the focusing substrate 427.

[0133] By separately disposing the magnetic attraction component 426, at least two coils, and at least two magnets on different sides of the driving part, and by disposing the magnetic attraction component 426 in the middle area of ​​the adjacent surfaces of the driving part where at least two sets of coils and at least two sets of magnets are located, it is possible not only to avoid increasing the size of one side of the camera module, but also to avoid tilting during the driving process, that is, to avoid dynamic tilting.

[0134] This application also proposes a camera module, also known as a retractable camera module, comprising a retractable lens and a photosensitive component. The retractable lens is positioned in the photosensitive path of the photosensitive component, allowing light reflected from an object to pass through the retractable lens and form an image on the photosensitive component. The retractable lens of the camera module can extend or retract relative to the photosensitive component, switching between an extended working state and a retracted non-working state. In the working state, the retractable lens extends for focusing and imaging; in the non-working state, the retractable lens retracts to reduce the overall height of the retractable camera module, providing a flat surface and regular shape for terminal devices such as mobile phones, while also facilitating storage or transportation.

[0135] According to some embodiments of this application, such as Figure 7 and Figure 8 As shown, the photosensitive chip 62 of the photosensitive assembly 200 is disposed along the optical axis on the light-emitting side of the telescopic lens, used to receive external light collected by the telescopic lens and form an image. Currently, improving the imaging quality of the camera module and increasing the size of the photosensitive chip 62 is an inevitable development trend. As the size of the photosensitive chip 62 increases, especially after the image plane size of the photosensitive chip 62 increases to 1 inch, the size of the telescopic camera module will inevitably increase further. As mentioned above, the telescopic lens is disposed on the photosensitive assembly 200 to reduce the height and lateral dimensions of the telescopic camera module. However, due to the relatively large size of the telescopic lens, driving the telescopic lens to achieve optical image stabilization not only requires a large driving force but also further increases the size of the telescopic lens. Therefore, in this application, the optical image stabilization function is disposed on the photosensitive assembly 200.

[0136] Specifically, in some embodiments of this application, the photosensitive assembly 200 includes a mounting component, which includes a circuit board 61 and components such as a photosensitive chip 62, electronic components (not shown), a filter element 63, and a filter element support 64 mounted on the circuit board 61. The circuit board 61 includes a circuit board 61 body, a connecting strip (not shown), and a connector portion (not shown). The connecting strip connects the circuit board 61 body and the connector portion and enables electrical conduction between the circuit board 61 body and the connector portion. The photosensitive chip 62 and the electronic components (not shown) are electrically connected to the circuit board 61 body, and the connector is mounted on the connector portion. The photosensitive chip 62 is used to receive external light collected by the telescopic lens to form an image and is electrically connected to a portable device through the circuit board 61. The photosensitive chip 62 includes a photosensitive area and a non-photosensitive area. The photosensitive chip 62 is electrically connected to the circuit board 61 through photosensitive chip 62 pads located in the non-photosensitive area. For example, the photosensitive chip 62 is electrically connected to the body of the circuit board 61 through wire bonding (gold wire bonding), soldering, FC process (flip chip), or RDL (redistribution layer technology). The photosensitive chip 62 is suitable for being fixed to the front side of the circuit board 61 body by an adhesive medium (the surface of the chip circuit board 61 facing the optical lens 20 is defined as the front side, and the side of the circuit board 61 opposite to the front side is the bottom side). In some embodiments of this application, the circuit board 61 body has a groove or through hole (circuit board 61 through hole) in the middle. The photosensitive chip 62 is mounted and fixed in the groove or through hole of the circuit board 61 body, thereby reducing the impact of the thickness of the circuit board 61 body on the thickness of the photosensitive component 200 and reducing the height of the camera module.

[0137] Specifically, in some embodiments of this application, the filter element support 64 is disposed on the circuit board 61 body of the circuit board 61 to support other components. In one embodiment of this application, the filter element support 64 is implemented as a separately molded plastic support, which is attached to the surface of the circuit board 61 body by an adhesive medium and is used to support other components. Of course, in other embodiments of this application, the filter element support 64 can also be formed on the circuit board 61 body in other ways. For example, the filter element support 64 is implemented as a molded base, which is integrally molded to a predetermined position on the circuit board 61 body by a molding process. This is not limited to this application.

[0138] Specifically, in some embodiments of this application, the filter element 63 is held on the light-sensing path of the photosensitive chip 62 to filter the imaging light entering the photosensitive chip 62. In one specific example of this application, the filter element 63 is mounted on the filter element bracket 64 and corresponds to at least the light-sensing area of ​​the photosensitive chip 62. It is worth mentioning that in other embodiments of this application, the filter element 63 can be indirectly mounted on the filter element bracket 64 through other support members. Furthermore, in other embodiments of this application, the filter element 63 can also be mounted at other locations in the camera module, for example, the filter element 63 is formed inside the optical lens 20 (e.g., as a filter film attached to the surface of an optical lens of the optical lens 20), which is not limited to this application.

[0139] In some embodiments of this application, the photosensitive assembly 200 further includes a third driving portion 50, which is adapted to drive the photosensitive chip 62 of the mounting member to translate, rotate, or tilt, thereby realizing the image stabilization function of the photosensitive chip 62 of the retractable camera module. Further, the third driving portion 50 includes a chip image stabilization fixing portion 501, a chip image stabilization movable portion 502, and a third driving element. The third driving element can be a VCM motor, a piezoelectric motor, or an SMA motor, etc. This application uses an SMA motor as an example to further reduce the height of the photosensitive assembly 200. The third driving element includes at least one SMA line, and the mounting member is disposed on the chip image stabilization movable portion 502. The at least one SMA line drives the mounting member to achieve optical image stabilization in at least one direction.

[0140] Specifically, in some embodiments of this application, the chip stabilization movable part 502 is disposed within the chip stabilization fixed part 501, and at least one SMA line is disposed between the chip stabilization movable part 502 and the chip stabilization fixed part 501. One end of the at least one SMA line is connected to the chip stabilization movable part 502, and the other end of the at least one SMA line is connected to the chip stabilization fixed part 501. When the at least one SMA line is heated and shrinks, it drives the chip stabilization movable part 502 to move, so as to realize the optical image stabilization function of the photosensitive component 200.

[0141] In some embodiments of this application, at least one SMA line includes a first SMA line, a second SMA line, a third SMA line, and a fourth SMA line. The first SMA line, the second SMA line, the third SMA line, and the fourth SMA line are respectively disposed on the four sides of the chip anti-shake fixing part 501, that is, two opposite SMA lines among the four SMA lines are parallel to each other, and two adjacent SMA lines are perpendicular to each other.

[0142] In some embodiments of this application, the bottom surface of the self-sensing component 200 of the circuit board 61 extends upward and from the side of the telescopic camera module to the external electronic device. On the one hand, this reduces the reaction force of the circuit board 61 during movement; on the other hand, it makes full use of the lateral dimension of the telescopic camera module.

[0143] Figure 10 This is a schematic diagram of an electronic device that utilizes the camera module and telescopic lens proposed in this application. The electronic device includes an electronic device body 1000 and at least one camera module 2000 disposed within the electronic device body 1000, including the telescopic lens described in the above embodiments. The camera module 2000 is mounted on the electronic device body 1000 and can serve as a front-facing camera or a rear-facing camera. Optionally, in some embodiments of this application, the electronic device may be, but is not limited to, a mobile phone, computer, tablet computer, and other shooting devices with shooting functions, such as smart wearable devices, monitoring equipment, etc.

[0144] It should be noted that the technical solutions presented herein are 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 inventive concept of this invention, and all such modifications and variations fall within the protection scope of this invention.

Claims

1. A telescopic lens, characterized in that, The telescopic lens includes, An optical lens includes at least two first lens components and a second lens component arranged sequentially from the object side to the image side along the optical axis, wherein the first lens component is movable relative to the second lens component along the optical axis. The first driving section includes a first driving element; and The second driving section includes a second driving element for driving the first lens component to move along the optical axis of the optical lens to achieve optical focusing. The first driving section is configured to drive the second driving section and the first lens component arranged in the second driving section along the optical axis of the optical lens. In the projection plane perpendicular to the optical axis of the optical lens, the first driving element of the first driving part and the second driving element of the second driving part are not on the same straight line passing through the optical axis. The second driving element of the second driving part is constructed as a voice coil motor, which includes a focusing magnet and a focusing coil respectively disposed on the movable carrier and the fixed carrier of the second driving part. The second driving part further includes a magnetic attraction component having a magnetic attraction magnet and a first magnetic yoke. The magnetic attraction component, the focusing coil, and the focusing magnet are separately arranged on different sides of the second driving part. The magnetic attraction magnet is arranged opposite to the first magnetic yoke and is respectively arranged on the movable carrier and the fixed carrier of the second driving part. When viewed circumferentially around the optical axis of the optical lens, the magnetic attraction magnet of the magnetic attraction component of the second driving part is arranged between the two focusing magnets, and the first magnetic yoke is arranged between the two focusing coils.

2. The telescopic lens according to claim 1, wherein, In a cross-section perpendicular to the optical axis of the optical lens, the second driving portion has a polygonal shape, wherein the side of the second driving portion corresponding to the position of the first driving element of the first driving portion is different from the side of the second driving portion where the second driving element is located.

3. The telescopic lens according to claim 2, wherein, The side of the second drive section corresponding to the position of the first drive element of the first drive section is not parallel to the side of the second drive section where the second drive element is located.

4. The telescopic lens according to claim 1, wherein, The first driving part further includes a movable sleeve. The first driving element of the first driving part is connected to the movable sleeve in a transmission connection, thereby driving the movable sleeve to move along the optical axis of the optical lens. The movable sleeve includes a sleeve protrusion extending in the image-side direction within the receiving cavity of the sleeve body. In the non-working state of the telescopic lens, the sleeve protrusion of the movable sleeve presses against the second driving part.

5. The telescopic lens according to claim 4, wherein, The first driving element of the first driving part further includes a driving mechanism and a transmission mechanism that is drivingly connected to the driving mechanism. The first driving element is drivingly connected to the movable sleeve through the transmission mechanism. The driving mechanism of the first driving element of the first driving part includes a driving device. The transmission mechanism includes a gear device and a transmission screw. The gear device includes a first gear and a second gear that meshes with the first gear. The first gear is driven by the driving device. The second gear is connected to the transmission screw. The transmission screw is drivingly connected to the first movable connecting end of the movable sleeve.

6. The telescopic lens according to claim 5, wherein, The first driving part further includes a guide member for guiding the movement of the movable sleeve. The guide member includes a main guide rod and a secondary guide rod, wherein the main guide rod is inserted into a second movable connection end of the movable sleeve, and the secondary guide rod is inserted into a third movable connection end of the movable sleeve. The main guide rod and the secondary guide rod extend parallel to the optical axis of the optical lens, with one end fixed to the fixed base of the first driving part and the other end fixed to the driving housing of the first driving part. In a projection plane perpendicular to the optical axis of the optical lens, the main guide rod and the first driving element of the first driving part are located on the same side of the telescopic lens, and the secondary guide rod is located on the side of the telescopic lens opposite to the main guide rod based on the optical axis of the optical lens.

7. The telescopic lens according to any one of claims 1 to 6, wherein, The second drive section also includes a fixed carrier and a movable carrier that can move relative to the fixed carrier along the optical axis of the optical lens, wherein the movable carrier is configured to support a first lens component of the optical lens.

8. The telescopic lens according to claim 7, wherein, The telescopic lens further includes at least one pop-out mechanism disposed between the first lens component and the second lens component, wherein in the working state of the telescopic lens, the at least one pop-out mechanism causes the second drive portion together with the first lens component disposed in the second drive portion to extend relative to the second lens component, wherein the pop-out mechanism includes a first elastic member and a support rod, the first elastic member having a hollow internal structure, and the support rod being accommodated in the hollow structure of the first elastic member, wherein in the non-working state of the telescopic lens, the first elastic member of the at least one pop-out mechanism is compressed between the first lens component and the second lens component, wherein the first elastic member is constructed as a helical spring, and the support rod is inserted into the helical spring.

9. The telescopic lens according to claim 8, wherein, The first driving part and the pop-up mechanism are configured to provide driving forces in opposite directions. In the working state of the telescopic lens, the first driving part and the pop-up mechanism cooperate to drive the second driving part together with the first lens component arranged in the second driving part to a first position along the optical axis of the optical lens. The second driving part is configured to drive the first lens component arranged in the second driving part to move along the optical axis of the optical lens during and / or after being driven to the first position by the first driving part, so as to achieve optical focusing.

10. The telescopic lens according to claim 8, wherein, The first driving part further includes a stop mechanism, which includes a first stop fixing part and a second stop movable part, wherein the first stop fixing part is disposed on the fixed base of the first driving part, and the second stop movable part is fixedly connected to the fixed carrier of the second driving part.

11. The telescopic lens according to claim 10, wherein, The first stop fixing part of the stop mechanism has at least one first stop block, which restricts the movement of the second stop movable part of the stop mechanism toward the object side along the optical axis of the optical lens. The second stop movable part of the stop mechanism includes a stop movable part body and a stop movable part through hole disposed in the middle of the stop movable part body. The size of the stop movable part through hole is larger than the diameter of the bottom of the first lens component, so that the first lens component can move within the stop movable part through hole along the optical axis of the optical lens. In a projection plane perpendicular to the optical axis of the optical lens, the stop mechanism is disposed between the movable sleeve of the first drive part and the second drive part.

12. The telescopic lens according to claim 11, wherein, The second stop mechanism further includes at least one stop mechanism support column, which extends from the outer side wall of the stop mechanism body along the optical axis of the optical lens toward the object side. The at least one stop mechanism support column has a through hole. One end of the support rod of the pop-out mechanism is fixedly connected to the second lens barrel of the second lens component, and the other end passes through the through hole of the corresponding stop mechanism support column.

13. The telescopic lens according to claim 1, wherein the side of the movable carrier and the fixed carrier corresponding to the position of the first driving element of the first driving part is different from and not parallel to the side of the movable carrier and the fixed carrier corresponding to the side provided with the focusing magnet and the focusing coil.

14. A camera module comprising a photosensitive component and a telescopic lens as described in any one of claims 1 to 13, wherein the telescopic lens is positioned on the photosensitive path of the photosensitive component such that light reflected from an object can be imaged on the photosensitive component after passing through the telescopic lens.

15. The camera module according to claim 14, wherein, The photosensitive component includes a third driving part, which is adapted to drive the photosensitive chip of the photosensitive component to translate, rotate or tilt, thereby realizing the image stabilization function of the photosensitive chip of the camera module.

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