Image-side lens driving structure and camera module

Abstract

An image-side lens driving structure, comprising: a bearing assembly (30), having a first bearing surface and a second bearing surface that are perpendicular to an optical axis; a lens assembly (10), comprising an object-side lens (11) and an image-side lens (12), the object-side lens (11) being mounted on the first bearing surface by means of a support portion (1121), the image-side lens (12) being arranged on the second bearing surface, and the object-side lens (11) and the image-side lens (12) being sequentially arranged along the optical axis; and a driving assembly (20), arranged in the bearing assembly (30) and located on one side of the image-side lens (12), and used for driving the image-side lens (12) to move along the optical axis, wherein the object-side lens (11) has an upper portion (1101) of the object-side lens (11) located on the upper side of the support portion (1121) and a lower portion (1102) of the object-side lens (11) located on the lower side of the support portion (1121); the upper portion of the object-side lens (11) is exposed outside the bearing assembly (30), and the lower portion of the object-side lens (11) is located in the bearing assembly (30); and the outer diameter of the support portion (1121) is greater than the maximum outer diameter of the upper portion of the object-side lens (11) and greater than the maximum outer diameter of the lower portion of the object-side lens (11).

Description

Image-side lens driving structure and camera module Technical Field

[0001] This application relates to the field of optical imaging equipment, and in particular to an image-side lens driving structure and a camera module. Background Technology

[0002] With the advancement of technology and the improvement of living standards, portable smart devices have flourished. Consumers have higher requirements for the photography function of smart devices. In order to pursue a thinner and lighter structural design, augmented reality or virtual reality devices often result in limited overall power consumption. Therefore, how to achieve miniaturization and low power consumption while ensuring basic camera performance has become a popular technical improvement direction for camera modules.

[0003] In related technologies, miniaturization and low-power design of camera modules are typically achieved by reducing image resolution and the weight of optical components. To ensure image quality, lightweight camera modules often require more powerful processing capabilities and more complex algorithms. The use of high-resolution image sensors, lens-driven focusing, and frequent focusing in high-resolution and high-frame-rate shooting modes all significantly increase system power consumption. Simultaneously, miniaturizing and lightweight camera modules requires a very short total length (TTL) lens, which may limit optical design space and consequently affect image quality.

[0004] Therefore, there is an urgent need for a camera module driving structure that can achieve overall miniaturization, reduce system power consumption, and ensure high image quality. Summary of the Invention

[0005] This application provides one or more embodiments of an image-side lens driving structure and a camera module to solve or at least partially alleviate the problem in the related art that the overall lightweighting and miniaturization of the camera module leads to a significant increase in system power consumption, and the space limitation of optical design space after miniaturization, which in turn affects imaging quality. These problems include the inability to simultaneously achieve miniaturization, system power consumption, and imaging quality.

[0006] One advantage of this application is that it provides an image-side lens driving structure and a camera module, and provides a small driving structure for the image-side lens, thereby improving the overall integration of the camera module and achieving miniaturization.

[0007] One advantage of this application is that it provides an image-side lens driving structure and a camera module. The lens assembly of the camera module includes a fixed object-side lens and a movable image-side component. The image-side component is driven to move along the optical axis to complete the focusing action, thereby reducing the size and weight of the focusing lens assembly, reducing the space required for focusing movement within the camera module, and achieving miniaturization.

[0008] One advantage of this application is that it provides an image-side lens driving structure and a camera module, wherein the image-side component is movable within the carrier component, and the image-side component includes an image-side lens and a carrier supporting the image-side lens, thereby reducing the weight of the focusing lens assembly and reducing the power consumption required for focusing.

[0009] One advantage of this application is that it provides an image-side lens driving structure and a camera module, wherein the object-side lens is fixedly mounted on the outside of the support component and partially exposed outside the support component. The thickness of the overall camera module does not need to fully cover the height of the object-side lens, thus saving part of the height of the object-side lens in the size of the camera module, reducing the internal space of the camera module, and reducing the overall size of the camera module.

[0010] One advantage of this application is that it provides an image-side lens driving structure and a camera module, wherein the object-side lens is fixed to a bearing surface located on the outer side of the bearing assembly by a support, and has an upper part of the object-side lens and a lower part of the object-side lens located on the upper and lower sides of the support, respectively, thereby further achieving miniaturization.

[0011] One advantage of this application is that it provides an image-side lens driving structure and a camera module, wherein the driving component is disposed on one side of the image-side component, and the driving component includes a driving member located in the middle and spherical members located on both sides of the driving member, thereby simplifying the structure of the driving component.

[0012] One advantage of this application is that it provides an image-side lens driving structure and a camera module, wherein the image-side lens is driven by the driving component to move along the optical axis, and the maximum outer diameter of the image-side lens is smaller than the maximum outer diameter of the object-side lens adjacent to the image-side lens, thereby reducing stray light interference and ensuring shooting quality.

[0013] Compared with related technologies, one or more embodiments of this application include at least one of the following beneficial technical effects:

[0014] (1) By setting a support part, this application divides the object-side lens into an exposed upper part and a lower part covered and shielded in the carrier component. The length ratio of the upper part and the lower part along the optical axis is based on the setting position of the support part. While ensuring optical performance, it reduces the space occupied by the object-side lens in the carrier component along the optical axis, which is conducive to further reducing the thickness of the camera module.

[0015] (2) The driving component is located on one side of the image side component inside the carrier component. The driving image side component moves along the optical axis inside the carrier component with a small thickness to achieve focusing. The only movable lens is the image side lens, which minimizes the number of movable lenses and reduces the energy consumption required for driving. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only involve some embodiments of this application and are not intended to limit this application.

[0017] Figure 1 is a schematic diagram of the structure of a camera module according to some embodiments of this application.

[0018] Figure 2 is a schematic diagram of the distance between the image-side lens and the nearest side of the base in a camera module according to some embodiments of this application.

[0019] Figure 3 is a top view of a camera module according to some embodiments of this application.

[0020] Figure 4 is an exploded structural view of a camera module according to some embodiments of this application.

[0021] Figure 5 is an exploded structural view of the carrier component of a camera module according to some embodiments of this application.

[0022] Figure 6 is a schematic diagram of the lens relationship between the object-side lens group and the image-side lens according to some embodiments of this application.

[0023] Figure 7 is a structural schematic diagram of the object-side lens and image-side component in a cut-edge state according to some embodiments of this application.

[0024] Figure 8 is a cross-sectional view of Figure 3 (AA section).

[0025] Figure 9 is a side cross-sectional view of a camera module according to some embodiments of this application.

[0026] Figure 10 is an enlarged view of point A in Figure 9.

[0027] Figure 11 is a schematic diagram of the shape of the image-side lens when it is cut along the second direction according to some embodiments of this application.

[0028] Figure 12 is a schematic diagram of the shape of the image-side lens when cut along the second and third directions according to some embodiments of this application.

[0029] Figure 13 is a schematic diagram of the drive assembly and base according to some embodiments of this application.

[0030] Figure 14 is a schematic diagram of the position drive assembly and base after removing the magnet according to some embodiments of this application.

[0031] Figure 15 is a schematic diagram of the magnet positions according to some embodiments of this application.

[0032] Figure 16 is a left view of the image-side lens drive structure after removing the housing according to some embodiments of this application.

[0033] Figure 17 is a right view of the image-side lens drive structure after removing the housing according to some embodiments of this application.

[0034] Figure 18 is a schematic diagram showing the positions of the fixed spherical member and the movable spherical member according to some embodiments of this application.

[0035] Figure 19 is a schematic diagram of the interaction between the object-side lens and the image-side lens in a cropped state and the driving assembly according to some embodiments of this application.

[0036] Figure 20 is a schematic diagram of another cooperation relationship between the object-side lens and the image-side lens in the chamfered state and the driving assembly according to some embodiments of this application.

[0037] In the image: 1. Camera module;

[0038] 10. Lens assembly;

[0039] 11. Object-side lens;

[0040] 111. Object-side lens group; 1111. First lens; 1112. Second lens; 1113. Third lens; 1114. Fourth lens; 1115. Fifth lens;

[0041] 112. Object-side lens barrel; 1121. Support section; 1122. Chamfered edge; 1123. Anti-stray light structure;

[0042] 11221, First cross-section; 11222, Second cross-section;

[0043] 11201. Object-side telescope tube protrusion; 11202. Object-side telescope tube inner extension;

[0044] 12. Image-side lens; 121. Inclined surface; 122. Lens body; 1221. First straight surface; 1222. Second straight surface; 1223. Third straight surface; 1224. Fourth straight surface; 1225. First curved surface; 1226. Second curved surface;

[0045] 20. Driver components;

[0046] 21. Driving component; 211. Magnet; 212. Coil; 213. Magnetic yoke;

[0047] 22. Spherical component; 221. First support group; 2211. First movable spherical component; 2212. Second movable spherical component; 222. Second support group; 223. Partition plate;

[0048] 23. Mounting base;

[0049] 30. Load-bearing components;

[0050] 31. Shell; 3101. Upper surface of top wall;

[0051] 32. Base; 321. Frame-type limiting component; 3201. First side surface; 3202. Second side surface; 3203. Third side surface; 3204. Fourth side surface; 3205. Top surface of base;

[0052] 33. Carrier; 331. Sidewall portion; 332. Support portion; 333. Reflective surface; 334. Filling gap;

[0053] 40. Adhesive; 50. Anti-collision ring; 60. Photosensitive component. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings showing multiple embodiments according to this application. It should be understood that the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments described in this application without creative effort will fall within the scope of protection of this application.

[0055] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing specific embodiments only and is not intended to limit this application; the terms "comprising," "including," "having," "containing," etc., in the description, claims, and accompanying drawings of this application are open-ended terms. Therefore, "comprising," "including," or "having" refers to, for example, a method or apparatus having one or more steps or elements, but is not limited to having only these one or more elements. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0056] In the description of this application, it should be understood that the terms "center", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0057] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0058] In this application, the term "implementation" means that a specific feature, structure, or characteristic described in connection with an implementation can be included in at least one implementation of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same implementation, nor is it a separate or alternative implementation mutually exclusive with other implementations. Those skilled in the art will understand, explicitly and implicitly, that the implementations described in this application can be combined with other implementations.

[0059] As mentioned above, it should be emphasized that when the term "comprising / including" is used in this specification, it is used to explicitly indicate the presence of the stated feature, integer, step, or component, but does not exclude the presence or addition of one or more other features, integers, steps, components, or groups of features, integers, steps, or components. As used in this application, the singular forms "a," "an," and "the" also include the plural forms, unless the context clearly indicates otherwise.

[0060] The terms “a” and “an” used in this specification may mean one, but may also be used interchangeably with “at least one” or “one or more”. The term “about” generally means the mentioned value plus or minus 10%, or more specifically, plus or minus 5%. The term “or” used in the claims means “and / or” unless it is explicitly stated that it refers only to alternatives.

[0061] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0062] According to Figures 1 to 20 of the specification, this application provides an image-side lens driving structure and a camera module 1, including a lens assembly 10, a driving assembly 20 and a support assembly 30. The lens assembly 10 includes an object-side lens 11 and an image-side lens 12. The object-side lens 11 is located on the support assembly 30, and the image-side lens 12 is located inside the support assembly 30. The object-side lens 11 and the image-side lens 12 are arranged along the optical axis. The driving assembly 20 is located inside the support assembly 30 and drives the image-side lens 12 to move along the optical axis direction from one side of the image-side lens 12.

[0063] The object-side lens 11 has a support portion 1121 and an upper part and a lower part of the object-side lens located on the upper and lower sides of the support portion 1121, respectively. The object-side lens 11 is mounted on the carrier assembly 30 through the support portion 1121. The upper part of the object-side lens is exposed outside the carrier assembly 30, and the lower part of the object-side lens is located inside the carrier assembly 30. The outer diameter of the support portion 1121 is greater than the maximum outer diameter of the upper part of the object-side lens and the maximum outer diameter of the lower part of the object-side lens.

[0064] In this application, the object-side lens 11 is divided by the support portion 1121. The upper part of the object-side lens protrudes from the carrier assembly 30, and the lower part of the object-side lens is located inside the carrier assembly 30. The object-side lens 11 is mounted on the carrier assembly 30 via the support portion 1121, so that the upper part of the object-side lens 11 is exposed outside the carrier assembly 30. The carrier assembly 30 only needs to cover the portion of the object-side lens 11 on the light-emitting side, the image-side lens 12, and the drive assembly 20, while maintaining... Based on the verified optical performance, the space occupied by the object-side lens 11 in the optical axis direction inside the support assembly 30 is reduced, which also reduces the shoulder height of the camera module 1 to a certain extent; at the same time, the drive assembly 20 is located on one side of the image-side lens 12, driving the image-side lens 12 to move along the optical axis inside the support assembly 30 to achieve focusing. The image-side lens 12 is the focusing lens group of the camera module 1, and the only movable lens is the image-side lens, which minimizes the number of movable lenses and reduces the energy consumption required for driving.

[0065] Furthermore, the drive assembly 20 and the image-side lens 12 together form a focusing movable assembly. To achieve miniaturization and weight reduction of the camera module 1, the mass and volume of the supporting assembly 30 are designed to be as small as possible. Therefore, the center of gravity of the camera module 1 is mainly affected by the center of gravity of the focusing movable assembly, which is concentrated on the drive assembly 20 and the image-side lens 12. With the stroke of the image-side lens 12 fixed, the center of gravity of the focusing movable assembly can be changed by altering the position of the drive assembly 20 in the height direction (parallel to the optical axis) of the supporting assembly. The center of gravity of the focusing movable assembly can be lowered by moving the drive assembly 20 downwards, thus lowering the center of gravity of the overall structure. This helps to further reduce the overall height of the camera module 1 and is more conducive to miniaturization of the overall structure of the camera module 1.

[0066] The position of the drive component 20 directly affects the travel height area of ​​the image-side lens 12 and the shoulder height of the camera module 1, thereby affecting the length of the lower part of the object-side lens along the optical axis and the position of the support part 1121 on the object-side lens 11 along the optical axis.

[0067] In this application, the support assembly 30 is disposed outside the lens assembly 10 and outside the drive assembly 20, providing support for the lens assembly 10 and the drive assembly 20, and surrounding at least a portion of the outer side of the object-side lens 11 and the outer side of the image-side lens 12, thereby blocking external light sources from entering the interior of the support assembly 30 and ensuring the normal operation of the optical system. The support assembly 30 has two support surfaces and a side portion connecting the two support surfaces. Both support surfaces are perpendicular to the optical axis of the camera module 1, providing support for the object-side lens 11, the image-side lens 12, and the drive assembly 20, respectively. The side portion surrounds the space between the two support surfaces, ensuring the main beam propagation path and the formation of the final image.

[0068] Specifically, the support assembly 30 has two support entities, each providing two support surfaces. One support entity has a through hole for the object-side lens 11 to pass through. The side portion connects the two support entities to form an internal space suitable for accommodating the tail portion of the object-side lens 11 and the image-side lens 12. The two support entities and the side portion can be connected by various methods such as gluing, welding, interference fit, snap-fit, mechanical connection, threading, or hinge, as long as the light-blocking properties of the internal space of the support assembly 30 are guaranteed. In some optional embodiments, one or both support entities are integrally formed with the side portion, further simplifying the structural composition and assembly steps of the support assembly.

[0069] In some embodiments of this application, the support assembly 30 includes a housing 31 and a base 32 connected to each other, as shown in Figures 5-8. The base 32 has a top surface 3205. The housing 31 has a top wall parallel to the top surface 3205 of the base and a side wall connecting the top wall and the top surface 3205 of the base. The top wall and the base 32 are both perpendicular to the same optical axis. The top wall has an upper surface 3101 for supporting the object-side lens 11. The top surface 3205 of the base supports the image-side lens 12 and the drive assembly 20. The drive assembly 20 drives the image-side lens 12 to move along the optical axis. That is, the upper surface 3101 of the top wall of the housing 31 provides a supporting surface for the object-side lens 11, and the top surface 3205 of the base 32 provides a supporting surface for the image-side lens 12 and the drive assembly 20. The side wall of the housing 31 extends from the edge of the top wall along the optical axis and surrounds at least part of the outer side of the object-side lens 11 and the outer side of the image-side lens 12 to block external light sources from entering the interior of the support assembly and ensure the normal operation of the optical system.

[0070] As shown in Figure 5, the optical axis direction in this application is defined as the first direction Z-axis. The bearing surface on the top side of the base 32 is perpendicular to the optical axis. The base 32 is rectangular and has four mutually perpendicular sides on the bearing surface. Taking the extension direction of one pair of mutually perpendicular sides as the second and third directions, and the intersection of the extension lines of the pair of sides as the origin, the bearing surface on the top side of the housing 31 is parallel to the side length interface (XY interface) of the base 32. The sidewall of the housing 31 extends along the optical axis direction (first direction Z-axis) from the four edges of the top side of the housing 31, forming the housing space 3100 together with the top side of the housing 31. The driving component 20 extends parallel to one of the sides. Taking the extension direction of the driving component 20 as the second direction, and the extension direction of the other side perpendicular to the extension direction of the driving component 20 as the third direction, and the intersection of the extension lines of the pair of sides as the origin.

[0071] Specifically, the bottom edge of the side wall of the housing 31 is at least partially connected to the top side of the base 32, forming a closed covering space 3000 between the top wall of the housing 31 and the top side of the base, as shown in FIG5. Between the top surface 3205 of the base 32 and the lower surface of the top wall of the housing 31, and in conjunction with the inner surface of the side wall of the housing 31, the covering space 3000 is formed. That is, the housing space 3100 and the top surface 3205 of the base 32 cooperate to form the covering space 3000, so as to separate the optical system in this application from the outside world and ensure the basic performance of the optical system.

[0072] The top surface 3101 of the housing 31 and the top surface 3205 of the base each provide a bearing surface. The side walls of the housing 31 surround the space between these two bearing surfaces from the side, forming a closed covering space 3000. Since the focusing movable component of the camera module 1 is the image-side lens 12, compared with the camera module 1 that uses partial lens movement for focusing, the height and travel of the focusing movable component along the optical axis are significantly reduced. The height of the space required for focusing within the housing 31 is reduced, and the distance between the two bearing surfaces and the height of the covering space 3000 are significantly reduced, thus achieving miniaturization of the overall structure of the camera module 1.

[0073] The housing 31 and the base 32 can be connected by various methods such as gluing, welding, interference fit, snap fastening, mechanical connection, thread, and hinge. In one optional embodiment, the housing 31 and the base 32 are connected by gluing.

[0074] In some optional embodiments, the housing 31 is integrally formed with the base 32. After the object-side lens 11, the image-side lens 12, the drive assembly 20 and other internal components are assembled, the bottom edge of the housing 31 is integrally formed with the top of the base to form the integrated support assembly 30.

[0075] In some optional embodiments, a portion of the housing 31 is integrally formed with the top of the base 32 to form a semi-enclosed space. After the object-side lens 11, the image-side lens 12, and other internal components are assembled, the drive assembly 20 is assembled onto the base 32 from the side to close the semi-enclosed space, preventing foreign objects generated by the connection operation on the circuit components corresponding to the drive assembly 20 from entering the optical system and reducing the impact on the final imaging.

[0076] Furthermore, the housing 31 has a through slot on one side wall corresponding to the drive assembly 20, exposing the area to be connected on the circuit assembly corresponding to the drive assembly 20, so that the side wall of the housing 31 does not hinder the connection operation of the area to be connected, thereby further optimizing the assembly steps.

[0077] In some embodiments of this application, the carrier component 30 further includes a carrier 33, which has an optical channel inside. The optical channel extends along the optical axis and passes through the carrier 33. The image-side lens 12 is disposed on the carrier 33 and located on the optical channel to ensure that the light beam emitted from the image-side lens 12 can reach the imaging surface of the camera module 1 and realize the optical function of the camera module 1.

[0078] The carrier 33 adopts a flat structure as much as possible to reduce the height occupied by the coverage space 3000 inside the camera module 1 along the optical axis.

[0079] Specifically, the drive component 20 contacts one side of the carrier 33 parallel to the optical axis and drives the carrier 33 to move along the optical axis to complete the focusing action of the image-side lens 12. The side of the carrier 33 that contacts the drive component 20 is a plane, which improves the transmission efficiency of the driving force, enhances the driving efficiency, and ensures the stability of the driving structure.

[0080] In this application, the drive assembly 20 is placed on the top of the base, the image-side lens 12 is disposed close to the drive assembly 20, and the base 32 has four sides parallel to the optical axis (first direction Z axis). The side of the base 32 closest to the drive assembly 20 is defined as the first side 3201, the side opposite to the first side 3201 is the second side 3202, and the two sides adjacent to the first side 3201 are the third side 3203 and the fourth side 3204, respectively.

[0081] As shown in Figure 2, the mating surface is the first side surface 3201, and the reference surface is the second side surface 3202.

[0082] In one embodiment of this application, the distance between the first side surface 3201 and the optical axis must be kept to a minimum to ensure that the drive assembly 20 can drive the carrier 33 to move normally, while avoiding mechanical interference and improving assembly accuracy.

[0083] In one embodiment of this application, the driving component 20 is placed on the base. Considering the overall compactness of the image-side lens driving structure, the minimum distance between the second side 3202 and the optical axis must be less than the minimum distance between the first side 3201 and the optical axis, so as to ensure that the miniaturization requirement can be met while ensuring the normal operation and high performance of the driving component.

[0084] Furthermore, while ensuring that the minimum distance between the second side 3202 and the optical axis is less than the minimum distance between the first side 3201 and the optical axis, the minimum distance between the second side 3202 and the optical axis is minimized as much as possible. This reduces the space of other sides without accommodating structures while accommodating the drive component 20, improves the effective utilization rate of the space of the base 32, and achieves miniaturization.

[0085] Specifically, the minimum distance between the side of the base 32 closest to the driving component 20 and the optical axis is ... times the minimum distance between the other side of the base opposite the driving component 20 and the optical axis. That is, the minimum distance between the first side 3201 of the base 32 and the optical axis is ... times the minimum distance between the second side 3202 and the optical axis. By reasonably adjusting the minimum distance, a higher degree of integration can be achieved in a limited space. Adjusting the plane (XY interface) layout of the base 32 perpendicular to the optical axis allows the image-side lens driving structure to maintain sufficient mechanical stability and functional performance while meeting the miniaturization requirements. This ensures that the driving component can smoothly drive the carrier to move, reduces product performance differences caused by assembly tolerances, and improves the consistency and reliability of the image-side lens driving structure.

[0086] Furthermore, the minimum distance from the optical axis to at least one other side of the base 32 that is not opposite to the driving component 20 is less than the minimum distance from the optical axis to one side of the base 32 that is closest to the driving component 20, as shown in FIG2. The side of the base 32 that is not opposite to the driving component 20 is the third side 3203 and the fourth side 3204 of the base 32. In this application, no other structure needs to be accommodated within the distance range of these two sides from the optical axis. Therefore, the minimum distance from the optical axis to the third side 3203 and / or the fourth side 3204 can be reduced as much as possible, thereby reducing the overall size of the camera module 1 in the plane perpendicular to the optical axis (size on the XY interface).

[0087] The third side 3203 and the fourth side 3204 of the base 32 are parallel to each other and are opposite to each other. The minimum distance between the third side 3203 and the optical axis is equal to the minimum distance between the fourth side 3204 and the optical axis, which simplifies the process and improves assembly efficiency.

[0088] In some embodiments, during the assembly process, the camera module 1 uses the second side 3202 and the third side 3203 as reference surfaces, or the second side 3202 and the fourth side 3204 as reference surfaces. By reasonably reducing the plane dimensions (dimensions on the XY interface) of the two reference surfaces perpendicular to the optical axis from the optical axis, a higher degree of integration can be achieved in a limited space. At the same time, it can ensure that each component can be quickly and accurately aligned during the assembly process, thereby improving production efficiency.

[0089] More specifically, the minimum distance between the other side of the base 32 opposite to the drive assembly 20 and the optical axis is ... mm, that is, the minimum distance between the second side 3202 of the base 32 and the optical axis is ... mm. The second side 3202 is closer to the optical axis, which to a certain extent suppresses the deflection torque of the carrier 33 around the optical axis and effectively resists the interference of external lateral forces (such as vibration and inertial impact) of the carrier, ensuring effective transmission of drive, improving the drive efficiency of the drive assembly 20, further reducing drive energy consumption, and reducing assembly steps and adjustment time.

[0090] According to one embodiment of this application, the first side surface 3201 is parallel to the second side surface 3202 along the optical axis direction (i.e., the first direction Z-axis direction). During the assembly process, in order not to affect the assembly of the drive component, the second side surface 3202 is preferentially selected as the alignment reference surface. This can ensure that each component is subjected to uniform force during the assembly process, avoid deformation or damage caused by uneven local force, and reduce energy loss caused by mechanical friction and vibration.

[0091] As shown in Figure 2, the other side of the base 32 opposite to the drive component 20 is a plane, that is, the second side 3202 of the base 32 is a plane. During assembly, the second side 3202 is used as the assembly reference plane, which improves the assembly accuracy and drive efficiency, simplifies the assembly process, reduces mechanical interference, improves the reliability and production efficiency of the product, and meets the requirements of miniaturization and high performance.

[0092] Among them, the lens assembly 10, drive assembly 20, etc. need to be aligned with at least two reference planes to ensure the alignment accuracy of the optical axis and the imaging quality of the optical system, while reducing the accumulation of errors during the assembly process, thereby improving the assembly accuracy of the entire module.

[0093] Furthermore, the third side 3203 and the fourth side 3204 are two sides on the base 32 that connect the first side 3201 and the second side 3202, and are located on both sides of the drive assembly 20. The design of the third side 3203 and the fourth side 3204 makes the disassembly and maintenance of each component more convenient. By positioning and fixing on opposite sides, damaged components can be easily disassembled and replaced, improving maintenance efficiency.

[0094] Specifically, as shown in Figure 2, the adjacent surfaces of the second side surface 3202 are the third side surface 3203 and the fourth side surface 3204. At least one of the third side surface 3203 and the fourth side surface 3204 is selected as the assisting surface and assembled with the reference surface. The smaller distance between the third side surface 3203 or the fourth side surface 3204 and the optical axis can make the fit between the carrier 33 and the base 32 tighter. After assembly, the contact area between the carrier 33 and the base 32 is relatively large, the connection is more solid, and it helps to control the cumulative error during the assembly process.

[0095] Furthermore, the base 32 is provided with a frame-shaped limiting member 321, which covers at least part of the side portion of the carrier 33 along the optical axis direction, restricting the range of movement of the carrier 33 in the plane (XY interface) perpendicular to the optical axis direction (first direction Z axis), and guiding the movement of the carrier 33 along the optical axis direction, further improving the stability of the movement of the carrier 33 along the optical axis, and greatly reducing the offset of the carrier during the movement.

[0096] In some embodiments of this application, the frame-shaped limiting member 321 provides additional structural support for the carrier 33, enhances the structural stability of the entire camera module 1, and reduces the degradation of imaging quality caused by vibration or impact.

[0097] The frame-shaped limiting member 321 is a frame-shaped structure disposed on the top surface 3205 of the base 32, surrounding the periphery of the carrier 33, forming a frame-shaped structure with at least one opening facing the drive assembly 20. The opening design of the frame-shaped limiting member 321 allows the carrier 33 to move in the optical axis direction, but restricts its movement in other directions. The opening of the frame-shaped limiting member 321 faces the drive assembly 20, effectively restricting the movement of the carrier 33 in the optical axis direction, allowing the carrier 33 to move within a predetermined stroke range, while reducing the tilt and deflection of the carrier 33 during movement, ensuring the linear movement of the image-side lens 12 during focusing.

[0098] Specifically, the frame-type limiting member 321 has at least one first limiting portion and at least one second limiting portion. The first limiting portion extends parallel to the length direction of the drive assembly, i.e., it extends along the second direction and is disposed near the boundary between the top surface 3205 of the base and the second side surface 3202. The third limiting member extends along the base plane direction perpendicular to the length direction of the drive assembly 20, i.e., it extends along the third direction and is disposed near the boundary between the top surface 3205 of the base and the third side surface 3203, or near the boundary between the top surface 3205 of the base and the fourth side surface 3204.

[0099] As shown in Figure 4, the frame-type limiting member 321 has one first limiting part and two second limiting parts. The driving assembly 20 and the frame-type limiting member 321 together surround the carrier 33, which can prevent the carrier 33 from colliding with the base 32 or other internal components during the focusing process, protect the internal components from mechanical damage, reduce friction between the carrier and the base, and extend the service life of the components.

[0100] In this application, the lens assembly 10 includes an object-side lens 11 and an image-side lens 12 located on the same optical axis. The object-side lens 11 and the image-side lens 12 are respectively placed on two supporting surfaces of the supporting assembly 30. The object-side lens 11 is fixed to the top side of the housing 31, and the image-side lens 12 is placed on the top side of the base 32 and is driven by the driving assembly 20 to move along the optical axis within the supporting assembly 30 to achieve focusing. Specifically, the object-side lens 11 is fixed to the upper surface 3101 of the top wall of the housing 31, and the image-side lens 12 is placed on the top surface 3205 of the base 32.

[0101] The lens assembly 10 is divided into two parts along the optical axis. The object-side lens 11 is fixed to the upper surface 3101 of the top wall of the housing 31. The end of the side wall of the housing 31 along the optical axis is fixed to the base. The object-side lens 11, the housing 31 and the base 32 together form the fixed part of the camera module 1. The image-side lens 12 and the drive assembly 20 that carries and drives it to move along the optical axis together form the movable part that completes focusing. To a certain extent, the fixed part of the lens assembly 10 is integrated. The relative positions of all the lenses in the object-side lens 11 are kept consistent. At the same time, the object-side lens 11 can be designed to meet the aperture design required by the module or lens shape. In some embodiments, the object-side lens 11 can be compatible with a large aperture design through the differentiated design of the upper part 1101 of the object-side lens.

[0102] By using the image-side lens as a movable lens, compared to other solutions where the lens inside the object-side lens is partially movable, the image-side lens is closer to the photosensitive component located within the base 32. A slight displacement of the image-side lens 12 along the optical axis allows for more effective and significant focus adjustment, achieving short-stroke focusing and reducing the overall thickness of the camera module 1 along the optical axis, thus miniaturizing the camera module 1. Simultaneously, the image-side lens 12 has a smaller mass and volume. Combined with the short-arm drive characteristics of the side-mounted drive component 20, drive power consumption is significantly optimized, and the need for heat dissipation space is eliminated. Furthermore, the integrated layout of the drive component 20 reduces the size of the drive system. In addition, the fixed object-side lens 11 forms a rigid optical path anchor point, eliminating the redundant space required for object-side lens barrel extension in traditional focusing methods. Moreover, the phase-detection sensor located on the exit side of the image-side lens 12, in conjunction with the tilt compensation algorithm, allows the camera module 1 to further reduce its thickness while maintaining optical image stabilization.

[0103] Specifically, the object-side lens 11 is located on the top side of the housing 31, and the image-side lens 12 is located on the base 32 and within the coverage space 3000 formed by the housing 31 and the base 32. The image-side lens 12 is driven by the drive assembly 20 to move closer to or further away from the object-side lens 11 along the optical axis to complete the focusing action and capture the light beam.

[0104] In some embodiments of this application, the object-side lens 11 includes an object-side lens group 111 and an object-side lens barrel 112. The object-side lens group 111 is placed inside the object-side lens barrel 112 and has a plurality of object-side lenses arranged sequentially from the object side to the image side in the object-side lens barrel 112 along the optical axis direction. The outer edge of each object-side lens is connected to the inner side of the object-side lens barrel 112 to form an integral object-side lens 11.

[0105] The light beam enters the object-side lens group 111 along the optical axis from the object side to the image side through the first object-side lens, undergoes corresponding refraction through multiple object-side lenses in sequence, and exits from the last object-side lens. During the refraction process, the light beam is focused and diverged multiple times through the synergistic effect of multiple object-side lenses, thereby changing the size and specific direction of the light rays. This helps to increase the amount of light entering the lens, satisfy the final imaging requirements, and correct aberrations, thus ensuring image quality. Therefore, changing the shape, thickness, and surface profile of the lenses can, to a certain extent, influence and control the direction of light rays through the object-side lens group 111, thereby limiting the beam propagation path, which is beneficial for correcting aberrations and improving image quality.

[0106] In this application, the object-side lens group 111 includes a first lens 1111, ..., an (n-1)th lens and an nth lens. The outer diameter of the nth lens is larger than the outer diameter of the image-side lens 12, which constrains the edge thickness and aperture of the nth lens and the image-side lens 12. While ensuring the amount of light emitted from the nth lens and improving the light collection capability, it also reduces the unexpected stray light phenomenon caused by the light emitted from the nth lens entering the image-side lens 12.

[0107] Specifically, the outer diameter of the nth lens is 20%-50% larger than that of the image-side lens 12, which constrains the aperture and edge thickness of the nth lens and the image-side lens 12 to the greatest extent, thereby reducing stray light.

[0108] In one embodiment of this application, the object-side lens group 111 includes a first lens 1111, a second lens 1112, a third lens 1113, a fourth lens 1114, and a fifth lens 1115, as shown in FIG6. The outer diameter of the fifth lens 1115 is larger than the outer diameter of the image-side lens 12, which to a certain extent constrains the aperture and edge thickness of the fifth lens 1115 and the image-side lens 12, which helps to reduce the volume of the overall optical system. While ensuring basic optical performance, the volume of optical components is reduced, and the overall structure is improved in terms of compactness. At the same time, constraining the aperture and edge thickness of the movable image-side lens 12 can reduce the driving burden of the driving component 20 to a certain extent and reduce power consumption.

[0109] Specifically, the center thickness of the nth lens is greater than the center thickness of the image-side lens 12. Combined with the aperture relationship between the nth lens and the image-side lens 12, the overall shape of the nth lens and the image-side lens 12 can be restricted so that the light beam is effectively focused by the nth lens before entering the image-side lens 12. This achieves precise control of the light beam refraction direction, restricts the propagation path of the light beam in the imaging system, controls the optical power of the nth lens and the image-side lens 12, corrects aberrations, improves the lens resolution, and also greatly reduces stray light passing through the image-side lens 12. This prevents additional stray light from being generated due to the change in the distance between the nth lens and the image-side lens 12 during the focusing process when the image-side lens 12 is driven to move along the optical axis.

[0110] As shown in Figure 6, when n = 5, the nth lens is the fifth lens 1115. The center thickness of the fifth lens 1115 is greater than the center thickness of the image-side lens 12, which restricts the overall shape of the fifth lens 1115 and the image-side lens 12.

[0111] More specifically, the distance between the vertices of the opposite faces of the nth lens and the image-side lens 12 is greater than the center thickness of the image-side lens 12. This further constrains the size of the gap between the nth lens and the image-side lens 12, and rationally sets the relative position of the nth lens and the image-side lens 12. While ensuring basic optical performance, this reduces the problem of poor performance caused by instability in the assembly of the image-side lens 12 due to excessively small gaps.

[0112] As shown in Figure 6, when focusing at infinity (1.5 meters and above), the distance sp5 between the vertex faces of the fifth lens 1115 and the image-side lens 12 on opposite sides is greater than the center thickness of the image-side lens 12. The gap size between the fifth lens 1115 and the image-side lens 12 is constrained by the ratio of the gap difference between the fifth lens 1115 and the image-side lens 12 to the center thickness of the image-side lens 12, thus avoiding the problem of poor performance caused by the unstable assembly of the image-side lens 12 due to the gap being too small.

[0113] Furthermore, temperature variations also affect the spacing (sp5) between the fifth lens 1115 and the image-side lens 12. In some embodiments of this application, at 0 degrees Celsius, the spacing (sp5) between the fifth lens 1115 and the image-side lens 12 is 0.60mm-0.62mm. This design takes into account the coefficient of thermal expansion in extreme low-temperature environments, ensuring that the lens assembly maintains accurate optical performance even in extremely cold conditions, thus improving the reliability and durability of the product under extreme climatic conditions.

[0114] In some embodiments of this application, at 45 degrees Celsius, the distance sp5 between the fifth lens 1115 and the image-side lens 12 is 0.62mm-0.64mm. Furthermore, by adjusting the lens spacing to adapt to high-temperature environments, changes in lens distance caused by temperature increases can be reduced, maintaining stable imaging quality and further enhancing the product's performance stability in high-temperature environments.

[0115] Understandably, in some embodiments of this application, by adjusting the sp5 value at different temperatures, the internal stress of the lens assembly caused by temperature changes can be reduced, thereby extending the product's service life. This design helps improve the reliability and durability of the lens assembly in different environments, ensuring the long-term stability and performance of the product under varying temperature conditions.

[0116] In some embodiments of this application, an aperture stop is provided between the (n-1)th lens and the nth lens.

[0117] In one embodiment of this application, when n=5, an aperture stop is provided between the fourth lens 1114 and the fifth lens 1115.

[0118] In some specific embodiments of this application, the outer diameter of multiple object-side lenses increases sequentially from the object side to the image side along the optical axis, as shown in Figure 6. The outer diameter of the first lens 1111, the second lens 1112, the third lens 1113, the fourth lens 1114, and the fifth lens 1115 increases sequentially from the object side to the image side along the optical axis. This enhances the light absorption capability and photosensitivity of the optical system, significantly improves imaging brightness and clarity, ensures basic optical performance, improves the overall compactness of the entire object-side lens group 111, reduces the total length (TTL) of the optical system, and improves the mechanical stability of the lenses. Without significantly increasing the overall volume of the object-side lens group 111, it provides space for integrating and optimizing the overall performance of the optical system, which is beneficial for realizing multiple functions such as wide-angle shooting, high-resolution imaging, and macro shooting.

[0119] Specifically, in some embodiments of this application, the fifth lens 1115 and the image-side lens 12 are made of a high-refractive-index, low-dispersion glass material. This material not only provides excellent optical performance but also maintains the stability of the inter-lens gap during temperature fluctuations due to its low coefficient of thermal expansion. This design is particularly suitable for near-focal-length imaging systems because precise alignment between lenses is crucial for maintaining image sharpness when operating at close range. By using this glass material, the focusing accuracy and image quality of the imaging system are ensured even under extreme temperature variations, thereby improving the system's reliability and stability. Furthermore, the choice of this glass material brings additional beneficial effects. First, due to its high refractive index, the required optical performance can be achieved while maintaining a small lens size, which is highly advantageous for reducing the size and weight of the camera module.

[0120] In this application, the object-side lens 11 has a support portion 1121. Specifically, the side of the object-side lens group 111 is enclosed by the object-side lens barrel 112, that is, the object-side lens group 111 is disposed inside the object-side lens barrel 112, so that the outer side of the object-side lens group is isolated from external light. The support portion 1121 is disposed on the outer side of the object-side lens barrel 112, and the object-side lens barrel 112 is mounted to the top wall of the housing 31 through the support portion 1121, thereby realizing the mounting of the object-side lens 11 on the housing.

[0121] The object-side lens has an upper part and a lower part located on the upper and lower sides of the support 1121, respectively. Both the upper and lower parts of the object-side lens extend along the optical axis. The upper part of the object-side lens is exposed outside the housing 31 and is located outside the entire support assembly 30. The lower part of the object-side lens is located between the housing 31 and the base 32 and is located inside the support assembly 30. The outer diameter of the support 1121 is larger than the maximum outer diameter of the upper part of the object-side lens and the maximum outer diameter of the lower part of the object-side lens, which to a certain extent constrains the overall outer diameter and volume of the object-side lens 11, reduces the space occupied by the object-side lens 11 in the optical axis direction between the housing 31 and the base 32, and reduces the thickness of the overall structure to a certain extent.

[0122] As shown in Figures 7-8, along the optical axis (first direction Z-axis), the upper part of the object-side lens protrudes from the top surface of the housing 31, extending the volume of the lower part of the object-side lens outward from the housing 31. This reduces the space required to be reserved inside the housing 31, while allowing the internal structure to be stacked more compactly on top of the base 32, further reducing the height requirement of the internal space of the housing 31 and optimizing the internal structural layout. The support part 1121 is located between the upper and lower parts of the object-side lens, which allows for precise control of the exposed proportion of the object-side lens 11, further reducing the overall thickness of the camera module 1 while maintaining its structural strength.

[0123] Specifically, the maximum outer diameter of the upper part of the object-side lens is greater than the maximum outer diameter of the lower part of the object-side lens, as shown in Figures 7-8. The maximum outer diameter of the upper part of the object-side lens on the radial plane (XY interface) is greater than the maximum outer diameter of the lower part of the object-side lens on the radial plane (XY interface), thereby limiting the space occupied by the lower part of the object-side lens between the housing 31 and the base 32, that is, limiting the space occupied by the lower part of the object-side lens in the covered space 3000. This is beneficial to further reduce the thickness of the overall structure along the optical axis direction, so as to simplify the overall structure.

[0124] More specifically, the object-side lens barrel 112 is configured as a cylindrical structure with a central hollowed-out shape, and the object-side lens group 111 is disposed in the central hollowed-out area of ​​the object-side lens barrel 112. Here, there is no limitation on the cylindrical structure of the object-side lens barrel 112, and any peripheral structure for connection and support that matches the shape of the lens group of the object-side lens group 111 is acceptable. In some embodiments of this application, the cylindrical structure of the object-side lens barrel 112 can be implemented as an irregular cylindrical structure.

[0125] As shown in Figures 4-8, the support portion 1121 extends from a portion of the object-side lens barrel 112 along a plane (radial plane, XY interface) perpendicular to the optical axis (first direction Z axis). This portion of the object-side lens barrel 112 is located between the upper part and the lower part of the object-side lens, with the light-incident side as the upper side and the light-outceasing side as the lower side. The object-side lens barrel 112 is divided by the support portion 1121 into an object-side lens barrel protrusion 11201 located above the support portion 1121 in the optical axis direction and an object-side lens barrel inner extension 11202 located below the support portion 1121 in the optical axis direction.

[0126] The support part 1121 is flange-shaped, which ensures the connection contact area between the support part 1121 and the housing 31 and improves the connection stability between the support part 1121 and the housing 31.

[0127] Specifically, the upper part of the object-side lens is implemented as the object-side lens barrel protrusion 11201 and a portion of the lens and a portion of the lens body of the object-side lens group 111 located within the object-side lens barrel protrusion 11201. The lower part of the object-side lens is implemented as the object-side lens barrel inner extension 11202 and a portion of the lens and a portion of the lens body of the object-side lens group 111 located within the object-side lens barrel inner extension 11202. The portion of the object-side lens barrel 112 located between the object-side lens barrel protrusion 11201 and the object-side lens barrel inner extension 11202, i.e., the support portion 1121, may have its internal space covering a portion of the lens body. Since the object-side lens barrel protrusion 11201, the object-side lens barrel inner extension 11202, and the support 1121 are integrally formed to form the object-side lens barrel 112, and the object-side lens barrel protrusion 11201, the object-side lens barrel inner extension 11202, and the support 1121 are interconnected internally, that is, the object-side lens barrel 112 is an integrated structure, and its internal space can be regarded as a whole space. Therefore, the division of the upper part and the lower part of the object-side lens in this application is mainly reflected in the division of the object-side lens barrel protrusion 11201 and the object-side lens barrel inner extension 11202. The object-side lens group 111 supported inside can determine the installation position and spacing within the internal space of the object-side lens 112 according to its own optical performance requirements, without involving the division of the upper part and the lower part of the object-side lens.

[0128] The upper part of the object-side lens is exposed outside the support assembly 30, and the lower part of the object-side lens is disposed inside the support assembly 30, as shown in Figures 4-8. The object-side lens barrel protrusion 11201 is exposed outside the housing 31 and the base 32, and the light-incident surface of a lens located on the light-incident side is exposed outside. The object-side lens barrel inner extension 11202 and the other lens portion supported by it are located inside the support assembly 30. A portion of the object-side lens barrel 112 located between the object-side lens barrel protrusion 11201 and the object-side lens barrel inner extension 11202 extends along the radial surface (XY interface) of the object-side lens barrel 112 to form the support portion 1121 and connects to the housing 31.

[0129] The above-described structural design of the object-side lens 11 places a portion of the object-side lens 11 within the coverage space 3000 between the housing 31 and the base 32. That is, the inner extension 11202 of the object-side lens barrel and the other lens portion supported by it are located within the coverage space 3000. Therefore, the position of the support 1121 on the object-side lens barrel 112 along the optical axis directly determines the length of the lower lens barrel along the optical axis, which to some extent affects the height of the coverage space 3000 and the thickness of the entire support assembly 30. By controlling the position of the support 1121, the thickness of the entire support assembly 30 can be limited to some extent, which is more conducive to reducing the thickness of the overall structure.

[0130] In some embodiments of this application, the object-side lens 11 is attached to the outside of the housing 31 via a support portion 1121 on the object-side lens barrel 112. The side of the support portion 1121 that is in contact with the surface of the housing 31 is a planar structure. This design allows the object-side lens 11 to achieve a high degree of assembly flatness when it is bonded to the housing 31 via the support portion 1121. This not only ensures a tight fit between the object-side lens 11 and the housing 31, but also provides good structural stability and shock resistance due to the stability of the planar structure. At the same time, it evenly distributes heat, reduces lens deformation caused by temperature changes, maintains the stability of optical performance, and allows the lens assembly 10 to focus on the object more quickly.

[0131] Therefore, the object-side lens 11 is attached to the outside of the housing 31 by the support portion 1121 on the object-side lens barrel 112, which further improves the flatness of the assembly and the performance stability of the lens under different environmental conditions, and provides a more reliable and stable optical imaging solution.

[0132] In some embodiments of this application, the side of the support portion 1121 that contacts the surface of the housing 31 can be any connection structure, without shape limitation. In some embodiments, the side of the support portion 1121 that contacts the surface of the housing 31 can be a snap-fit ​​structure. Specifically, the support portion 1121 can be designed as a snap-fit ​​body with its edge extending in the optical axis direction (Z-axis direction), and the upper surface of the housing 31 is designed with snap-fit ​​holes corresponding to the snap-fit ​​body extended by the support portion 1121, so that the support portion 1121 can be snap-fit ​​connected to the housing 31.

[0133] In some embodiments of this application, the support 1121 is designed as a split structure of the object-side lens barrel 112, allowing the connection of the object-side lens barrel 112 to the housing 31 to be flexibly preceded or followed by the connection of the support 1121 to the housing 31. Preferably, the object-side lens barrel 112 can be preferentially installed at the window on the upper surface of the housing 31 to determine the position, and then the support 1121 is installed on the upper surface of the housing 31 and surrounds the upper part of the object-side lens barrel 112. Furthermore, this split design provides flexibility and convenience in device assembly.

[0134] Furthermore, in this embodiment, the support portion 1121 is designed as a cylinder. This shape helps improve heat dissipation efficiency because the cylindrical structure provides a larger surface area, which facilitates rapid heat dissipation, thereby maintaining the performance stability of the lens assembly 10 under different temperature conditions. In other embodiments of this application, the support portion 1121 can also be designed as a square, trapezoid, or other shapes to adapt to different design requirements and space constraints.

[0135] In this application, the connection method between the support portion 1121 and the housing 31 is not limited; that is, the support portion 1121 can be connected to the housing 31 by contact bonding, soldering, etc. In this embodiment, the preferred connection method is contact bonding. This connection method not only simplifies the assembly process and reduces manufacturing costs, but also avoids material deformation or damage that may be caused by high-temperature welding, thereby maintaining the precise fit and structural integrity of the support portion 1121 and the housing 31. In addition, contact bonding provides better sealing performance, which helps protect internal components from the influence of the external environment, such as dust and moisture, enhancing the durability and reliability of the product.

[0136] In the embodiment shown in FIG7, the image-side lens 12 is cut along at least one direction parallel to the optical axis (Z-axis direction), the shape of the carrier 33 is adapted to the shape of the lens in the image-side lens 12 after the cut edge, and / or, the lens in the object-side lens 11 is cut along at least one direction parallel to the optical axis (Z-axis direction), and the shape of the object-side lens barrel 112 is adapted to the shape of the lens in the object-side lens 11 after the cut edge.

[0137] As shown in the embodiment of Figure 7, the object-side lens barrel 112 is designed with a chamfered surface 1122 according to the shape of the inner lens of the object-side lens 11 after chamfering. Further, the chamfered surface 1122 has a first chamfered surface 11221 and a second chamfered surface 11222, located on the upper and lower sides of the support portion 1121 respectively; that is, the support portion 1121 is positioned between the first chamfered surface 11221 and the second chamfered surface 11222. Furthermore, this design reduces the load-bearing weight of the housing 31, and by chamfering starting from the first lens of the object-side lens 11, it effectively reduces the shape of the lens and the overall size of the object-side lens 11, thereby reducing the volume of the camera module 1. The reduced size makes the camera module 1 more compact and easier to integrate into various portable devices.

[0138] In this embodiment, the first cut surface 11221 and the second cut surface 11222 effectively expand the bonding contact area between the object-side lens barrel 112 and the housing 31 by increasing the width of the support portion 1121, thereby further improving the stability of the object-side lens 11, reducing the risk of detachment due to uneven force, and enhancing the overall rigidity of the structure, thus improving the lens's resistance to external impacts and vibrations.

[0139] In some embodiments, the ratio of the diameter of the arc edge of the object-side lens barrel 112 in the second direction at the first cut surface 11221 to the diameter of the circle containing the arc edge of the support portion 1121 is 0.65-0.7. This ratio helps to reduce the size of the object-side lens 11 and further reduce the problem of the object-side lens 11 with the cut edge design being prone to falling off due to uneven force.

[0140] In some embodiments, the ratio of the width of the object-side lens barrel 112 in the first direction at the second cross-section 11222 to the diameter of the circle containing the arc edge in the second direction is controlled between 0.85 and 0.92, preferably 0.9, which helps to further reduce the size of the object-side lens 11 and, more importantly, allows the support portion 1121 to maintain a large bonding area, thereby improving the bonding strength.

[0141] In some embodiments of this application, the lower end face of the object-side lens barrel 112 along the optical axis has an anti-stray light structure 1123, and the reflectivity of the surface of the image-side lens 12 of the anti-stray light structure 1123 is less than the reflectivity of the peripheral surface of the lens barrel.

[0142] Specifically, the lower end face of the object-side lens barrel 112 utilizes an anti-stray light structure 1123 to reduce the amount of unwanted light reflected from the lower end face of the object-side lens barrel 112. Furthermore, this unwanted light can undergo multiple reflections around the periphery of the object-side lens group 111, thereby reducing energy. More specifically, the anti-stray light structure 1123 improves image quality, reduces halos and glare, and also enhances the light efficiency and image sharpness of the optical system, providing higher quality imaging results.

[0143] In some embodiments of this application, the image-side lens 12 is implemented as an optical bare lens, which is mounted on the carrier 33, which is placed on the base 32. The driving assembly 20 drives the carrier 33 to move along the optical axis, causing the image-side lens 12 to move closer to or further away from the object-side lens 11 along the optical axis, thereby adjusting the relative position between the image-side lens 12 and the object-side lens group 111 to achieve focusing. In this process, only the image-side lens 12 is movable, reducing the mass and volume of the movable lens and lowering the output power consumption of the driving assembly required for focusing. At the same time, the carrier 33 is also designed to be as flat as possible to reduce the travel height required for driving, significantly reducing the vertical occupancy of the image-side lens 12 and the carrier 33 during focusing.

[0144] Referring to Figures 9 and 10, the upper outer side of the image-side lens 12 has an inclined surface 121. Furthermore, in some embodiments of this application, the image-side lens 12 is implemented as an inclined surface 121 and a lens body 122. Even further, the inclined surface 121 is used to reduce the obstruction of light rays incident on the periphery of the image-side lens 12.

[0145] In some embodiments of this application, the image-side lens 12 is a bare lens having at least one pair of opposing surfaces (marked), each pair of opposing surfaces being arranged parallel to the optical axis.

[0146] Referring to Figure 11, in some embodiments, at least one pair of opposing surfaces of the image-side lens 12 are implemented as a first straight surface 1221 and a second straight surface 1222 of the lens body 122. Specifically, the image-side lens 12 forms opposing first straight surfaces 1221 and second straight surfaces 1222 along a second direction (refer to the X direction in Figure 11), and the image-side lens 12 forms a first curved surface 1225 and a second curved surface 1226 in a third direction (refer to the Y direction in Figure 11). That is, the image-side lens 12 presents a runway shape from a top-down view. Specifically, in this embodiment, the image-side lens 12 is implemented as an optical bare lens formed by opposing straight surfaces and opposing curved surfaces, which is used to constrain the uniformity of the lens thickness of the image-side lens 12, increase the manufacturability of lens forming, further miniaturize the image-side lens 12, and reduce the power consumption required when the carrier 33 carries the image-side lens 12 for movement.

[0147] Referring to Figure 13, the image-side lens 12 has a first straight surface 1221, a second straight surface 1222, a first curved surface 1225, and a second curved surface 1226. The first straight surface 1221 and the second straight surface 1222 are parallel to the third side surface 3203 and the fourth side surface 3204 of the base 32, respectively. The minimum distance between the first side surface 3201 and the second curved surface 1226 is defined as D1, the minimum distance between the second side surface 3202 and the first curved surface 1225 is defined as D2, the minimum distance between the third side surface 3203 and the second straight surface 1222 is defined as D3, and the minimum distance between the third side surface 3203 and the first straight surface 1221 is defined as D4.

[0148] Referring to Figure 14, the image-side lens 12 has a first straight surface 1221, a second straight surface 1222, a first curved surface 1225, and a second curved surface 1226. The first straight surface 1221 and the second straight surface 1222 are parallel to the first side surface 3201 and the second side surface 3202 of the base, respectively. The minimum distance between the first side surface 3201 and the second straight surface 1222 is defined as D1, the minimum distance between the second side surface 3202 and the first straight surface 1221 is defined as D2, the minimum distance between the third side surface 3203 and the first curved surface 1225 is defined as D3, and the minimum distance between the fourth side surface 3204 and the second curved surface 1226 is defined as D4.

[0149] In some embodiments, the ratio of the distance between the first straight surface 1221 and the second straight surface 1222 to the diameter of the circle containing the first arc surface 1225 is 0.55-0.6. This ratio causes the chamfer ratio of the image-side lens 12 to be larger than the chamfer ratios of the first chamfer 11221 and the second chamfer 11222 of the object-side lens barrel 112. Therefore, the image-side lens 12 reduces the maximum redundant size, thereby reducing the load on the drive assembly 20 and reducing the system drive power.

[0150] Referring to Figure 12, in some embodiments, the image-side lens 12 is tangent to a third direction (refer to the X direction in Figure 12) along a second direction (refer to the Y direction in Figure 12). The image-side lens 12 forms a first straight surface 1221 and a second straight surface 1222 in the second direction. The image-side lens 12 forms a third straight surface 1223 and a fourth straight surface 1224 in the third direction. Further, the first straight surface 1221 and the second straight surface 1222 form a first structural region Z1 between themselves and the optical area of ​​the image-side lens 12 (refer to the circular area in Figure 11). The third straight surface 1223 and the fourth straight surface 1224 form a second structural region Z2 between themselves and the optical area of ​​the image-side lens 12. The width of the first structural region Z1 is greater than the width of the second structural region Z2.

[0151] Furthermore, this edge-cutting method can further reduce the overall size of the image-side lens 12. Specifically, in this embodiment, the image-side lens 12 includes a first structural region Z1 that serves as a support and a second structural region Z2 disposed around the image-side lens 12. The width between the first structural region Z1 and the optical region is much greater than the width between the second structural region Z2 and the optical region, thereby ensuring that at least one side can have a support width on the carrier 33, and improving the height-fixed yield of the image-side lens 12 of the bare lens.

[0152] In some embodiments of this application, the carrier 33 is a tetrahedral structure with a central hollow area. Further, in this embodiment, the central hollow area of ​​the carrier 33 is set to be circular. Even further, this circular area is adapted to the shape of the image-side lens 12 in this embodiment; that is, the image-side lens 12 is positioned within the circular central hollow area of ​​the carrier 33. In this embodiment, the carrier 33, driven by the driving component 20, moves the image-side lens 12 along the optical axis of the object-side lens 11 to achieve further precise focusing and image capture.

[0153] In some embodiments of this application, the central hollow area of ​​the carrier 33 is not limited to a specific shape, but can be adapted to the specific shape of the image-side lens 12, whether circular or any other shape. This design allows the carrier 33 to adapt to lenses of different specifications, thereby enhancing the versatility and applicability of the carrier 33. Furthermore, by adapting the shape of the central hollow area of ​​the carrier 33 to the shape of the image-side lens 12, the embodiments of this application can ensure the stability of the image-side lens 12 in the carrier 33 and reduce the air gap between the lens and the carrier 33, thereby reducing the refraction and reflection of light between the lens and the carrier, and thus improving image quality.

[0154] In this application, the maximum outer diameter of the object-side lens 11 near the image-side lens 12 is designed to be larger than the maximum outer diameter of the image-side lens 12. This design helps to reduce unwanted stray light generated by the non-effective diameter portion when mounting the bare lens. Specifically, a portion of the light rays emitted from the object-side lens 11 towards the image-side lens 12 near the edge can exit from the periphery of the image-side lens 12 without incident on the image-side lens 12, thereby reducing the generation of stray light.

[0155] In this application, the carrier 33 has a bottom wall and a side wall portion 331. The bottom wall extends from the periphery of the image-side lens 12 along a radial surface (XY interface) and has a central hollow area for supporting the image-side lens 12. The carrier side wall extends from the periphery of the bottom wall toward the object side in a direction parallel to the optical axis. The drive assembly 20 is located on one side of the carrier 33, that is, the drive assembly 20 is disposed relative to one carrier side wall of the carrier 33 and drives the carrier to move along the optical axis to achieve focusing.

[0156] In this application, the bottom end of the carrier 33 extends along the optical axis (Z-axis direction) of the object-side lens 11 to form a support portion 332. Further, in this embodiment, the support portion 332 is the bottommost portion of the sidewall portion 331 extending horizontally. The support portion 332 is designed to abut against the image-side lens 12 along the optical axis (Z-axis direction) of the object-side lens 11, forming a cavity with the sidewall portion 331, further ensuring a certain support width between the image-side lens 12 and the carrier 33, thus achieving structural positioning.

[0157] Referring to Figures 9 and 10, in this application, the image-side lens 12 is adapted to be placed within the cavity. The inclined surface 121 of the image-side lens 12 and the reflective surface 333 and sidewall portion 331 of the carrier 33 together form a filling gap 334, which is suitable for filling with adhesive 40 such as glue. Furthermore, this design, through the installation of a bare lens, allows the image-side lens 12 to directly contact and connect with the carrier 33, reducing intermediate structures, improving the assembly accuracy between the image-side lens 12 and the carrier 33, and reducing assembly difficulty. The adhesive 40 further serves a fixing function, and can also dampen vibrations, buffer the hard contact between the image-side lens 12 and the carrier 33, improve structural stability, and protect the image-side lens 12 from damage.

[0158] In the selection of adhesive 40 in this application, the adhesive 40 can be a commonly used optical adhesive in the prior art, such as optical epoxy resin adhesive, polyurethane sealant, acrylic adhesive, UV adhesive, α-cyanoacrylate adhesive, etc. Preferably, in this embodiment, the adhesive 40 is mainly used as optical epoxy resin adhesive, whose refractive index after curing is close to that of a variety of optical materials, which can effectively reduce the refraction and scattering of light. At the same time, it has good process adaptability and is easy to process and apply. Therefore, it shows greater importance than other optional adhesives in terms of bonding, encapsulation and protection of the image-side lens 12 and the carrier 33.

[0159] Referring to Figures 9 and 10, the carrier 33 includes a reflective surface 333 for reflecting a portion of the light emitted from the object-side lens 11 to the outer periphery of the object-side lens 11. Specifically, the reflective surface 333 is disposed at the lower end of the carrier 33 within the cavity, and more specifically, the reflective surface 333 is positioned above the support portion 332. Further, in this embodiment, the reflective surface 333 is integrally formed with the sidewall portion 331. More specifically, the reflective surface 333 extends as a portion of the sidewall portion 331 in the horizontal direction and is designed with a downwardly inclined structure. Specifically, this design simplifies the manufacturing process and reduces assembly steps, while the integral forming enhances the stability and durability of the structure. The inclined structure of the reflective surface 333 helps reduce unnecessary light reflection within the carrier, thereby reducing stray light interference, improving image clarity and contrast, and optimizing the overall performance of the optical system.

[0160] In some embodiments of this application, the reflective surface 333 and the sidewall portion 331 can be manufactured as separate parts. Furthermore, this design provides greater flexibility, allowing the reflective surface 333 and the sidewall portion 331 to be independently designed and optimized according to specific optical and structural requirements. Moreover, while the separate manufacturing structure of the reflective surface 333 and the sidewall portion 331 may increase assembly steps and manufacturing costs, this structure allows for more precise adjustments to the angle and shape of the reflective surface 333 to accommodate different optical configurations, potentially improving optical performance. Simultaneously, this separate design facilitates later maintenance and replacement, as the reflective surface 333 and the sidewall portion 331 can be processed independently, which may be more advantageous in certain applications. However, a one-piece structure for the reflective surface 333 and the sidewall portion 331 remains the preferred embodiment.

[0161] Referring to Figures 9 and 10, the reflective surface 333 gradually tilts towards the optical axis (Z-axis) of the object-side lens 11 from the side closer to the object-side lens 11 to the side farther away from the object-side lens 11. Specifically, this tilting design effectively guides some of the light emitted from the object-side lens 11 to reflect towards the outer periphery of the object-side lens 11, reducing stray light interference with image quality. More specifically, by reducing stray light, this design improves image sharpness and contrast, while optimizing the light path and reducing direct reflection and scattering of light, thereby improving the overall performance of the optical system.

[0162] Referring to Figures 9 and 10, the projection of the reflective surface 333 along the optical axis (Z-axis direction) is located inside the outer diameter of the object-side lens 11. Utilizing the low reflectivity of the surface of the object-side lens barrel 112 facing the image-side lens 12, the object-side lens barrel 112 can diffusely dissipate light from the reflective surface 333, further reducing stray light. This structural design helps maintain stable imaging performance under various lighting conditions, improving shooting results and providing users with a high-quality imaging experience. By precisely controlling the light path and reducing light waste, this design also improves the light efficiency of the optical system, enabling the device to perform excellently even in low-light conditions.

[0163] Referring to Figures 9 and 10, the upper outer side of the image-side lens 12 has an inclined surface 121 to reduce obstruction of light rays incident on the periphery of the image-side lens 12. Furthermore, the inclined surface 121 gradually tilts towards the optical axis of the object-side lens 11 from the side away from it to the side closer to it. This tilting method is exactly the opposite of that of the reflecting surface 333; that is, the inclined surface 121 and the reflecting surface 333 tilt towards the optical axis from opposite sides of the object-side lens. Moreover, this design allows the reflecting surface 333 and the inclined surface 121 to cooperate in forming a filling gap 334. The inclined surface 121 is positioned adjacent to the reflecting surface 333 of the carrier 33, forming a space that can accommodate adhesives such as glue 40. This structure not only increases the adhesive area of ​​the image-side lens 12 and improves the bonding strength, but also enhances the overall strength and buffering effect of the structure, effectively improving the stability and durability of the image-side lens 12.

[0164] In this embodiment, the filling gap 334 formed by the reflective surface 333 and the inclined surface 121 is funnel-shaped. Further, in some embodiments of this application, the shape of the filling gap 334 is not limited; that is, the shape of the filling gap 334 is determined by the reflective surface 333 and the inclined surface 121. Specifically, in this embodiment, the shape of the filling gap 334 is set into a funnel shape by the reflective surface 333 and the inclined surface 121. More specifically, the funnel-shaped filling gap 334 simplifies the receiving and curing process of the adhesive 40, reduces the difficulty of production and processing, and reduces the risk of the adhesive 40 overflowing to the periphery of the carrier 33 during filling, thereby improving the stability and efficiency of production and processing.

[0165] Furthermore, the inclined surface 121 on the image-side lens 12 reduces the obstruction of light rays incident on the periphery of the image-side lens 12, effectively reducing light refraction and reflection at the image-side lens 12, and reducing stray light generation near the edge of the image-side lens 12. This improvement further enhances image quality, reduces glare and halo phenomena, and further improves shooting results.

[0166] In this application, a gap is designed between the outer periphery of the object-side lens 11 and the carrier 33, allowing light reflected towards the outer periphery of the object-side lens 11 to be reflected within this gap, further reducing the impact of stray light. This gap design facilitates effective light management, reducing direct reflection of light between the object-side lens 11 and the carrier 33, thereby reducing the negative impact of stray light on image quality. Furthermore, combined with the design of the tilted surface 121 and the reflecting surface 333, the performance of the entire optical system is optimized, not only improving the sharpness and contrast of the image but also enhancing the anti-interference capability of the optical system, providing higher quality imaging results.

[0167] In some embodiments of this application, the driving component 20 is disposed on the base 32 and located within the housing 31. The driving component 20 is disposed on one side of the carrier 33 and drives the carrier 33 to move along the optical axis to complete the focusing action. Specifically, the driving component 20 is disposed on one side of the top surface of the base 32 and extends towards the object side in a direction parallel to the optical axis with a length similar to that side side, so that the driving component 20 is disposed relative to a carrier sidewall of the carrier 33, which facilitates driving the carrier 33 to move.

[0168] Since the movable lens carried on the carrier 33 is only the image-side lens 12, the burden of driving the image-side lens 12 and the carrier 33 is reduced, the driving power consumption is reduced, and the side-mounted driving component 20 can meet the driving requirements of the movable part. The overall size and specifications of the driving component 20 are reduced, which is conducive to further miniaturization of the overall structure.

[0169] As shown in Figures 4-7, the drive assembly 20 is located within the covering space 3000 between the housing 31 and the base 32. Given that the covering space 3000 covers the total travel of the image-side lens 12, the height of the drive assembly 20 along the direction parallel to the optical axis (first direction Z-axis) directly determines the height of the covering space 3000 along the same direction. This design not only affects the overall structural thickness but also further restricts the placement of the support portion 1121 on the object-side lens 11. By optimizing the height of the drive assembly 20, the overall structural thickness can be effectively reduced, thereby achieving miniaturization of the camera module 1 while ensuring the accuracy and stability of the focusing action.

[0170] Specifically, the distance between the top wall of the housing 31 and the top of the drive assembly is cm (the range of the spacing), which limits the overall height of the coverage space 3000, significantly improves the space utilization of the coverage space 3000, reduces unnecessary space waste, thereby optimizing the internal structural layout of the camera module 1, making it more compact, helping to reduce the size of the camera module 1, and improving the system's integration and reliability.

[0171] Furthermore, the projection of the driving component 20 on the optical axis covers the projection of the lower part 1102 of the object-side lens on the optical axis, or the projection of the driving component 20 on the optical axis partially overlaps with the projection of the lower part 1102 of the object-side lens on the optical axis, so that there is a large overlap area between the height of the driving component 20 along the direction parallel to the optical axis (first direction Z axis) and the height of the lower part 1102 of the object-side lens on the optical axis, so as to further improve the space utilization of the coverage space 3000, which is conducive to improving the design controllability of the overall structural thickness and ensuring that the camera module 1 achieves the best optical performance and mechanical stability within a limited space.

[0172] Furthermore, when the projection of the driving component 20 onto the optical axis overlaps the projection of the lower part 1102 of the object-side lens onto the optical axis, the projection of the lower part 1102 of the object-side lens onto the optical axis occupies at least (proportional value) of the projection of the driving component 20 onto the optical axis; when the projection of the driving component 20 onto the optical axis partially coincides with the projection of the lower part 1102 of the object-side lens onto the optical axis, the overlapping portion occupies at least (proportional value) of the projection of the lower part 1102 of the object-side lens onto the optical axis. The above configuration constrains the positional and height relationship between the lower part 1102 of the object-side lens and the driving component 20, thereby further optimizing their spatial layout. This optimization not only improves the overall compactness of the camera module 1 but also ensures the cooperative operation between the driving component 20 and the object-side lens 11, reducing the risk of mechanical interference, while simultaneously improving focusing efficiency and image quality.

[0173] To further reduce the overall structural thickness, the drive component 20 is moved downward along the optical axis onto the base 32, meaning that the projection of the drive component 20 onto the optical axis partially overlaps with the projection of the base 32 onto the optical axis. This significantly reduces the overall height of the camera module 1, optimizes the utilization efficiency of the internal space, reduces unnecessary space waste, and provides a more flexible layout space for the support portion 1121 of the object-side lens 11. This helps to achieve miniaturization of the camera module 1 while ensuring the stability and accuracy of the focusing action.

[0174] As shown in Figure 12, in some embodiments of this application, the drive assembly 20 is disposed inside the housing 31, close to one side of the housing 31 and facing the image-side lens 12, including a mounting base 23 and a pair of drive members 21. The mounting base 23 is located on the base 32 and faces the carrier 122. One drive member 21 is disposed on one side of the carrier 122, and the other drive member 21 is correspondingly disposed on the mounting base 23. The pair of drive members 21 interact to provide power for the movement of the carrier 122 along the optical axis.

[0175] In some embodiments of this application, the driving element 21 is implemented as at least one magnet 211 and at least one coil 212. The coil 212 is fixed on the mounting base 23, and the magnet 211 is fixed on the image-side lens 12. The position of the magnet 211 corresponds to the position of the coil 212. The magnet 211 generates a constant magnetic field in the driving element 21, providing a magnetic field environment for the coil 212. When the coil 212 is energized, it generates a magnetic field around it, which interacts with the magnetic field of the magnet 211. The interaction between the magnetic field and the magnetic field of the magnet 211 causes the magnet 211 to move under the drive of the magnetic force, thereby driving the carrier 122 to move along the optical axis of the image-side lens 12, thereby pushing the magnet 211 and the connected carrier 122 to move along the optical axis of the image-side lens 12 to achieve the focusing function.

[0176] Furthermore, in the embodiments of this application, the center of gravity of the driving component 20 is set on one side of the image-side bare lens driving structure 1. This design can make room for other components as much as possible, and ultimately allow other components to be extended as much as possible in other directions, so that the lens assembly 10 is as close as possible to the base 32. This solves the problem that the camera module is too prominent in the optical axis direction in the prior art. After being installed on a smart wearable device, it will appear more concealed, thereby improving the overall aesthetics of the product.

[0177] As shown in Figure 13, specifically, the driving component 21 also includes a magnetic yoke 213. The magnetic yoke 213 is located at the center of the coil 212 and is mounted on the mounting base 23. It can guide and concentrate the magnetic field generated by the magnet 211, making the magnetic field distribution more reasonable and uniform, improving the utilization rate of the magnetic field, and enhancing the magnetic field strength. The magnet 211 is subjected to a greater magnetic force after the coil 212 is energized, which improves the driving efficiency. At the same time, the magnetic yoke 213 can provide a relatively stable and closed magnetic field environment for the driving component 21, reducing external magnetic field interference, improving the controllability of the movement of the carrier 122, and improving the focusing accuracy.

[0178] In some embodiments of this application, the drive assembly 20 is provided near the center region of the coil 212 on the side close to the magnetic yoke 213. A Hall sensor is also provided. The Hall sensor is located on the mounting base 23 and close to the magnetic yoke 213, facing the magnet 211 in the region between the magnet 211 and the magnetic yoke 213. When the coil 212 is energized, the magnet 211 will move parallel to the optical axis under the action of magnetic force. The magnetic field strength sensed by the Hall sensor will also change, and an analog signal corresponding to the magnetic field strength will be output to the external control mechanism. The external control mechanism can calculate an appropriate current by processing these signals to keep the carrier 122 in the current position, thereby adjusting the position of the image-side lens 12 and keeping it in the focus position, thereby completing the focusing action and improving the control accuracy and performance stability of the drive assembly 21.

[0179] The field of smart wearable devices is developing rapidly. Because these devices require camera modules to work for a long time to acquire image information and perform further processing, higher requirements are placed on camera modules. On the one hand, camera modules need to be more miniaturized in appearance, and on the other hand, they need to maintain low power consumption for a long time while taking into account image quality.

[0180] As mentioned above, in existing technologies, low power consumption is often achieved by driving with low load, as this reduces the driving load on the motor. In the embodiments of this invention, the driving element 21 is driven electromagnetically. Therefore, to reduce the driving power in the driving element 21, the driving current in the driving element 21 needs to be reduced. In some embodiments of this application, to increase the magnetic field strength generated by the driving element 21, a design is adopted in which the thickness of the magnet 211 is greater than 1.5 times the coil thickness and less than 3 times the coil thickness. This design allows the driving element 21 to be configured with a strong magnetic field strength with a small driving current, ensuring that the final driving force remains unchanged while meeting the requirement of a driving rate of less than 25mW as described in this application.

[0181] However, simply increasing the thickness of magnet 211 to enhance the magnetic field strength would further increase the counterweight at the carrier 122 position, thereby increasing the weight that the drive component 21 needs to drive and increasing the driving burden on the drive component 21. To solve the above problem, in the preferred embodiment of this application, a design is adopted in which the thickness of magnet 211 is greater than 1.5 times the thickness of coil 212 and less than 2 times the thickness of coil 212. This design allows the drive component 21 to be configured with a stronger magnetic field strength with a smaller driving current. While ensuring that the driving force provided by the drive component 21 meets the normal operation requirements of the carrier 122, it also meets the requirement of a driving power of less than 24mW in this application. This allows the drive component 21 to work in a low-power state for a long time, meeting the technical requirements for use in smart wearable devices.

[0182] As shown in Figures 15 and 16, in this application, the drive assembly 20 also includes a support member 22 mounted on the mounting base 23. The carrier 122 is attracted by the magnetic yoke 213 in the direction of the drive member 21 under the influence of magnetic force, thereby abutting against the support member 22. Part of the magnetic force generated by the magnetic yoke 213 towards the drive member 21 is canceled out by the supporting force generated by the contact between the support member 22 and the carrier 122 towards the carrier 122, achieving a flat state. When the carrier 122 moves under the influence of the magnetic force generated by the coil 212 after being energized, the support member 22 and the carrier 122 will generate a frictional force opposite to the direction of movement of the carrier 122, thereby limiting the range of movement of the carrier 122 to a certain extent and preventing the carrier 122 from moving excessively or undergoing unnecessary displacement during the focusing process.

[0183] In some embodiments of this application, the support member 22 includes a first support group 221 disposed on one side of the mounting base 23 and a second support group 222 disposed on the other side of the mounting base 23, wherein the first support group 221 includes at least two first support groups, namely a first movable ball member 2211 and a second movable ball member 2212.

[0184] In some embodiments of this application, the support member 22 includes a first support group 221 and a second support group 222 disposed on both sides of the drive member 21. In some embodiments of this application, the first support group 221 includes a first movable spherical member 2211 and a second movable spherical member 2212 disposed parallel to the optical axis. When the carrier 122 moves under the drive of magnetic force, the first support group 221 and the second support group 222 will rub against each other at the points where they abut against the carrier 122.

[0185] It is worth mentioning that, since some embodiments in this application adopt a center-of-gravity offset design, compared with other non-side-mounted drive component solutions, when the user installs the image-side bare lens drive structure 1 with one side of the drive component 20 placed at the top, the friction between the carrier 122 and the support member 22 will be further reduced due to gravity, thereby further reducing the power consumption of the drive component 21 when it is working, and ultimately improving the overall battery life of the device.

[0186] The spherical components contact the mounting base and carrier through the attraction between the driving magnet and the yoke 213. In this state, as the carrier moves along the optical axis, multiple spherical components support the carrier. Theoretically, when all the spherical components are the same size, all spherical components contact the carrier, allowing for stable support between the carrier and the mounting base. However, in actual production and use, it is relatively difficult for multiple spherical components to be exactly the same size. Even if the design specifies that all spherical components are the same size, the actual manufactured spherical components may differ in size. When there are slight differences in the size of multiple spherical components, contact between only a portion of the spherical components in the first support group and the lens module can cause the lens module in the prior art to tilt when moving along the optical axis. This tilt affects the final image quality. Furthermore, in some cases, more than one spherical component may fail to contact the camera lens, further reducing the stability of the lens module and severely affecting focusing accuracy and efficiency.

[0187] Therefore, as shown in Figure 17, in order to prevent tilting during the movement of the lens module, the support member 22 includes at least one second support group 222 and at least two first support groups 221. The at least one second support group 222 and the two first support groups 221 are respectively located on both sides of the drive member 21, such that the distance between the two endpoints of the first support group 221 in the direction parallel to the optical axis is smaller than the distance between the two endpoints of the second support group 222 in the direction parallel to the optical axis. Furthermore, the midpoint of the first support group in the direction parallel to the optical axis and the two endpoints of the second support group 222 in the direction parallel to the optical axis together form a unique triangular support surface. Therefore, during the movement of the carrier 122, the center of gravity of the contact surface will not shift due to the failure of a certain spherical component to contact the carrier 122.

[0188] Furthermore, in some other embodiments of this application, the first support group 221 and the second support group 222 may use guide rods to contact the carrier 122, wherein the length of the guide rod used in the first support group 221 in the direction parallel to the optical axis is less than the length of the guide rod used in the second support group in the direction parallel to the optical axis.

[0189] Similarly, those skilled in the art can use other methods to contact the carrier 122, provided that the length of one support group in the direction parallel to the optical axis is greater than the length of the other support group in the direction parallel to the optical axis, thereby avoiding the problem of the carrier 122 tilting during movement due to the manufacturing process.

[0190] In this embodiment, since the magnet 211 and the coil 212 are symmetrical, when the coil 212 is energized, the magnetic center of the generated magnetic force is located at the center of the coil 212. Furthermore, to make the force on the carrier 122 more uniform, in some embodiments, the center point of the coil 212 is located on the perpendicular line to the centerline of the second support group 222 along the optical axis extension direction. With this design, the electromagnetic force generated by the coil 212 acts uniformly on the carrier 122, ensuring uniform force distribution during movement and enabling more accurate attainment of the predetermined focusing position, thus improving focusing accuracy.

[0191] In some embodiments of this application, the length of the magnetic yoke 213 in the optical axis direction is greater than that of the coil 212. Since the driving member 21 in this embodiment adopts a moving magnet scheme, the relative position of the magnetic yoke 213 and the magnet 211 will change with the movement of the carrier 122 during the movement. This may cause the magnetic attraction center point to shift and shift out of the support area. In this embodiment, the length of the central area of ​​the support area is increased as much as possible to adapt to the mechanical formation of a larger driving member 21, thereby ensuring the linearity of the driving member 21.

[0192] Furthermore, in some preferred embodiments of this application, in order to maximize the width of the triangle formed by the support area in the central region to improve the mechanical stability of the large stroke, the second support group 222 is disposed between the first spherical movable member 2221 and the second spherical movable member 2222, and a partition structure 223 is provided between the first spherical movable member 2221 and the second spherical movable member 2222 for division. The larger the region, the smaller the probability of displacement and the higher the stability.

[0193] In some embodiments of this application, the centerline of the partition structure 223 perpendicular to the optical axis passes through the center of the second support group 222, thereby making the first support group 221 as offset as possible at the end of the vertical stroke of the carrier 122, so that the formed triangular support area is as large as possible, thereby further improving its effective stroke.

[0194] Furthermore, in some embodiments of this application, when the first support group 221 moves in a direction parallel to the optical axis, the top of the uppermost first support group does not exceed the top of the coil 212 when it reaches its highest point, and the bottom of the lowermost first support group does not exceed the bottom of the coil 212 when it reaches its lowest point. This design can achieve miniaturization of the entire drive assembly 20, and also make the contact between the first support group 221 and the carrier 122 more uniform, so that the lens can reach the predetermined focusing position more accurately during the movement, thereby improving focusing accuracy.

[0195] However, since the first support group 221 is positioned as far as possible at the upper and lower ends, the size of the first support group 221 may be limited, resulting in manufacturing difficulties. More importantly, the triangle formed by the support area is also the main part of the shoulder height of the drive member 21. The wider the triangle formed by the support area, the greater the shoulder height of the drive member 21 often needs to be, thus affecting the miniaturization of the image-side bare lens drive structure 1.

[0196] Furthermore, in order to maximize the width of the triangle formed by the support area in the central region and improve the mechanical stability of the long stroke, as shown in Figure 17, the two included angles formed by connecting the midpoint of the first support group 221 in the optical axis direction and the two endpoints of the second support group 222 in the optical axis direction are the first included angle α1 and the second included angle α2, respectively. In the preferred embodiment provided in this application, the first included angle α1 = the second included angle α2, and the angle of α1 is less than 15° and greater than 10°. This design allows the support area composed of the first support group 221 and the second support group 222 to be large while also meeting the requirement of a small size. This angle can be adjusted by adjusting the distance between the first support groups 221. In order to ensure the miniaturization of the drive component 20 and the uniform contact between the carrier 122 and the first support group 221, the distance between the second support group 222 and the partition structure 223 can also be adjusted.

[0197] Compared to the four supports in the prior art, the embodiment of this application uses three supports, with the second support group 222, the first spherical movable component 2221 and the second spherical movable component 2222 forming a unique support plane. The support plane generated by this structure is more stable, ensuring that the force center of the carrier 122 will not shift during movement, improving the linearity of the movement of the carrier 122, and ensuring that the image-side bare lens driving structure 1 will not shift during focusing. This achieves miniaturization while taking into account the final imaging quality.

[0198] In some embodiments of this application, the supporting component 30 further includes a frame-shaped limiting member 321 and a base 32. The base 32 is disposed below the carrier 122 to provide physical support for the carrier 122. The driving component 20 is located on the first side of the base, and the frame-shaped limiting member 321 is located on the second, third, and fourth sides of the base 32. The frame-shaped limiting member 321 extends parallel to the optical axis, thereby making the assembly of the driving component 21 in this embodiment more convenient. Before assembly, the carrier 122 is placed into the frame-shaped limiting member 321 for positioning. In addition, it can also limit the carrier 122 horizontally in the event of impact or drop, preventing the carrier 122 from falling off.

[0199] It is worth mentioning that in some embodiments of this application, the position of the driving component 20 can be further closer to the base 32 by using the method of encapsulating the CMOS chip on the integrated device, so that the lens assembly 10 has more space in the direction close to the base 32. This allows the lens assembly 10 to be further closer to the base 32, making the image-side bare lens driving structure 1 more compact, thereby further improving the concealment after installation.

[0200] This application also provides a camera module 1, including the aforementioned image-side lens driving structure and a photosensitive component 60. The photosensitive component 60 is held on the emission side of the lens assembly 10, as shown in FIG8. The photosensitive component 60 is located on the light-emitting side of the image-side lens 12 and is placed on the base 32. The light beam emitted from the image-side lens 12 reaches the photosensitive component 60 for imaging.

[0201] The camera module 1 also includes a circuit assembly that connects the electronic component and the photosensitive component 60. The electronic component obtains electrical energy through the conductive connection between the circuit assembly and the photosensitive component 60. Furthermore, it can also obtain signals through the communication connection between the circuit assembly and the photosensitive component 60.

[0202] The camera module 1 also includes a position sensing component, which is used to sense the position of the lens assembly 30 to improve the accuracy of motion position control. This position sensing component is also an electronic component and needs to be connected to a circuit.

[0203] In one embodiment of this application, the circuit assembly 60 includes a circuit board, and the aforementioned electronic components (including but not limited to the coil 212 in the driving assembly 20, the position sensing assembly, etc.) are electrically connected to the circuit board. The circuit board is mounted on the base 32, and the circuit board and the photosensitive assembly 60 are electrically connected.

[0204] In one embodiment of this application, the circuit assembly is embedded in the base 32. The circuit assembly includes a plurality of mounting terminals, a plurality of branches, and a plurality of connection terminals. The two ends of the branches form the mounting terminals and the connection terminals, respectively. The mounting terminals are adapted to be electrically connected to the electronic components, and the connection terminals are the pins adapted to be electrically connected to the photosensitive component 60.

[0205] The base 32 can be manufactured by an inlay molding process, in which at least one injection molding is performed around the circuit assembly to encapsulate the circuit assembly, expose the mounting terminals for mounting the electronic component, and expose pins on the outer surface of the base 32 for conductive connection with the photosensitive component 60.

[0206] Because the circuit component is embedded in the base 32, it does not require additional space, resulting in a smaller camera module 1 compared to a standalone circuit structure (such as a circuit board). Furthermore, the embedded design of the circuit connections in the camera module 1 protects the circuit structure, avoiding the assembly and reliability issues associated with exposed standalone circuit structures, simplifying the assembly process, and improving the reliability of the camera module 1.

[0207] This application also provides a method for assembling an image-side lens driving structure, including the following steps:

[0208] (A) A housing 31 is provided, the housing 31 having a mounting hole located on the top side;

[0209] (B) A base 32 is provided, on which at least one circuit component, at least one photosensitive component 60 and at least one driving component 20 are disposed, wherein one side of the base 32 closest to the driving component 20 is defined as an assisting surface, and the other side of the base 32 opposite to the driving component 20 is defined as a reference surface.

[0210] (C) Assemble the object-side lens 11 into the mounting hole on the top side of the housing 31, align it with the reference surface, assemble the carrier 33 with the image-side lens 12 onto the base 32, and then assemble the housing 31 onto the base 32.

[0211] The four sides of the base 32 parallel to the optical axis (first direction Z axis) are defined as first side 3201, second side 3202, third side 3203 and fourth side 3204. The side closest to the drive component 20 is the first side 3201, the side opposite to the first side 3201 is the second side 3202, and the third side 3203 and the fourth side 3204 connect the first side 3201 and the second side 3202.

[0212] Step (B) further includes: when assembling the drive component 21, the minimum distance between the first side surface 3201 and the optical axis is greater than the minimum distance between the second side surface 3202 and the optical axis, and the assembly is performed with the second side surface 3202 as the reference surface.

[0213] Step (C) further includes: a frame-shaped limiting member 321 is provided on the base 32, the frame-shaped limiting member 321 has a first limiting part and a second limiting part, wherein the first limiting part extends along one side length direction (third direction) of the base 32, and the second limiting part extends along one side length direction (second direction) of the base 32, limiting the carrier 33 on the other three sides except the side opposite to the driving component 20, so as to quickly locate the assembly position of the carrier 33.

[0214] As shown in Figures 19-20, in step (C), at least one side connected to the reference surface is defined as the assisting surface. The minimum distance between the assisting surface and the optical axis is less than the minimum distance between one side of the base of the driving assembly 20 and the optical axis. Because the distance between the assisting surface and the carrier 33 is small, the operational precision requirement is relatively low, making it easier to achieve precise assembly actions. Simultaneously, it reduces optical axis offset caused by assembly errors, ensuring that light can propagate accurately and smoothly in the optical system. The basic principles, main features, and advantages of this application have been described above.

[0215] Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from the spirit and scope thereof, and all such changes and modifications fall within the scope of this application as claimed. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A driving structure for an image-side mirror, characterized in that, include: A support component, the support component having a first support surface and a second support surface perpendicular to the optical axis; A lens assembly, comprising an object-side lens and an image-side lens, wherein the object-side lens is mounted on a first bearing surface via a support, and the image-side lens is disposed on a second bearing surface, and the object-side lens and the image-side lens are arranged sequentially along the optical axis; A driving component, which is disposed within the supporting component and located on one side of the image-side lens, is used to drive the image-side lens to move along the optical axis. The object-side lens has an upper part located above the support and a lower part located below the support. The upper part of the object-side lens is exposed outside the support assembly, and the lower part of the object-side lens is located inside the support assembly. The outer diameter of the support is greater than the maximum outer diameter of both the upper and lower parts of the object-side lens.

2. The image-side lens driving structure according to claim 1, characterized in that, The maximum outer diameter of the upper part of the object-side lens is greater than the maximum outer diameter of the lower part of the object-side lens.

3. The image-side lens driving structure according to claim 1, characterized in that, The load-bearing component includes a housing and a base. The housing has a top wall and a side wall. The side wall connects the top wall and the base. The upper surface of the top wall forms the first load-bearing surface, and the top surface of the base forms the second load-bearing surface.

4. The image-side lens driving structure according to claim 3, characterized in that, The object-side lens includes an object-side lens group and an object-side lens barrel. The object-side lens group is disposed inside the object-side lens barrel. The support portion extends from the radial surface of the object-side lens barrel and is fixedly connected to the top wall of the housing.

5. The image-side lens driving structure according to claim 4, characterized in that, The object-side lens barrel has a first cross-section located on the upper side of the support and a second cross-section located on the lower side of the support. The ratio of the arc edge of the first cross-section in the second direction to the outer diameter of the support is 0.65 to 0.7, and the second direction is perpendicular to the optical axis.

6. The image-side lens driving structure according to claim 3, characterized in that, The distance between the top wall of the housing and the topmost part of the drive assembly is 0.3 cm to 0.8 cm.

7. The image-side lens driving structure according to claim 3, characterized in that, The projection of the driving component on the optical axis covers the projection of the lower part of the object-side lens on the optical axis, or the projection of the driving component on the optical axis coincides with the projection of the lower part of the object-side lens on the optical axis.

8. The image-side lens driving structure according to claim 7, characterized in that, When the projection of the driving component on the optical axis covers the projection of the lower part of the object-side lens on the optical axis, the projection of the lower part of the object-side lens on the optical axis accounts for at least 50% of the projection of the driving component on the optical axis; when the projection of the driving component on the optical axis partially coincides with the projection of the lower part of the object-side lens on the optical axis, the overlapping portion accounts for at least 60% of the projection of the lower part of the object-side lens on the optical axis.

9. The image-side lens driving structure according to claim 3, characterized in that, The projection of the driving component on the optical axis partially overlaps with the projection of the base on the optical axis.

10. The image-side lens driving structure according to claim 4, characterized in that, The object-side lens group includes a first lens to an nth lens arranged sequentially along the optical axis. The outer diameter of the first lens to the nth lens increases sequentially from the object side to the image side along the optical axis, where n≥3.

11. The image-side lens driving structure according to claim 10, characterized in that, The outer diameter of the nth lens is greater than the maximum outer diameter of the image-side lens, and the center thickness of the nth lens is greater than the center thickness of the image-side lens.

12. The image-side lens driving structure according to claim 11, characterized in that, When n=5, in the infinity focusing state, the distance between the vertex surfaces of the fifth lens and the image-side lens is greater than the center thickness of the image-side lens.

13. The image-side lens driving structure according to claim 1, characterized in that, It also includes a carrier, on which the image-side lens is disposed, and the driving component drives the carrier to move along the optical axis.

14. The image-side lens driving structure according to claim 13, characterized in that, The image-side lens is a bare lens, and the image-side lens has an inclined surface along the optical axis. The carrier has a reflective surface, and a filling gap is formed between the inclined surface and the reflective surface. The filling gap is filled with adhesive.

15. The image-side lens driving structure according to claim 14, characterized in that, The inclined surface is inclined along the optical axis from the end away from the object-side lens to the end closer to the object-side lens, and the reflective surface is inclined along the optical axis from the end closer to the object-side lens to the end away from the object-side lens. The filling gap is funnel-shaped.

16. The image-side lens driving structure according to claim 13, characterized in that, The image-side lens has at least one pair of opposing straight surfaces, which are arranged parallel to the optical axis.

17. The image-side lens driving structure according to claim 16, characterized in that, The image-side lens has a first straight surface, a second straight surface, a first arc surface, and a second arc surface. The first straight surface and the second straight surface are arranged opposite to each other, and the first arc surface and the second arc surface are arranged opposite to each other. The ratio of the distance between the first straight surface and the second straight surface to the diameter of the circle containing the first arc surface is 0.55 to 0.

6.

18. The image-side lens driving structure according to claim 3, characterized in that, The base has a first side, a second side, a third side, and a fourth side extending along the optical axis. The driving component is disposed adjacent to the first side, and the second side is opposite to the first side. The minimum distance between the first side and the optical axis is greater than the minimum distance between the second side and the optical axis.

19. The image-side lens driving structure according to claim 18, characterized in that, The minimum distance between the third or fourth side and the optical axis is less than the minimum distance between the first side and the optical axis.

20. The image-side lens driving structure according to claim 18, characterized in that, It also includes a carrier, the top surface of which is provided with a frame-shaped limiting member, the frame-shaped limiting member having an opening toward the driving assembly, the frame-shaped limiting member covering at least a portion of the sidewall of the carrier along the optical axis.

21. The image-side lens driving structure according to claim 18, characterized in that, The driving component further includes: A driving component, comprising a magnet and a coil, wherein the magnet is fixed to the carrier and the coil is fixed to the bearing assembly; The spherical component includes a first support group and a second support group. The first support group includes a first movable spherical component and a second movable spherical component. The first support group and the second support group are located on both sides of the driving member and abut against the carrier.

22. The image-side lens driving structure according to claim 21, characterized in that, The distance between the two endpoints of the first support group in the optical axis direction is smaller than the distance between the two endpoints of the second support group in the optical axis direction, and the midpoint of the first support group in the optical axis direction and the two endpoints of the second support group in the optical axis direction form a unique triangular support surface.

23. The image-side lens driving structure according to claim 22, characterized in that, The first angle and the second angle formed by the lines connecting the midpoint of the first support group in the optical axis direction and the two endpoints of the second support group in the optical axis direction at the second support group are both 10° to 15°.

24. The image-side lens driving structure according to claim 21, characterized in that, The driving component also includes a magnetic yoke, which is disposed in the central region of the coil, and the thickness of the magnet is 1.5 to 2 times the thickness of the coil.

25. The image-side lens driving structure according to claim 24, characterized in that, The length of the magnetic yoke in the optical axis direction is greater than the length of the coil in the optical axis direction.

26. A camera module, characterized in that, include: The image-side lens driving structure as described in any one of claims 1 to 25; A photosensitive component is disposed on the exit side of the image-side lens.

Images