Camera module and electronic device thereof

Abstract

The present invention discloses a camera module and an electronic device. The camera module includes a photosensitive component, an optical lens, and a driving unit. The optical lens includes a lens barrel and a series of optical lenses. The lens barrel includes a barrel body and a mounting portion with an arc-shaped corner. The optical lenses are respectively disposed inside the barrel body. The driving unit includes a driving seat, a coil, at least one magnet, and at least one elastic portion. The driving seat has an assembly through hole and an assembly space extending outward from the assembly through hole. The magnet is disposed in the assembly space of the driving seat. The coil is wound around the side surface of the mounting portion. The barrel body is movably held in the assembly through hole of the driving seat. The mounting portion extends into the assembly space of the driving seat so that the coil and the magnet are adjacent to each other. The outer side and the inner side of the elastic portion are respectively connected to the driving seat and the mounting portion.

Description

Technical Field

[0001] The present invention relates to an optical imaging device, and particularly to a camera module and an electronic device thereof. Background Art

[0002] With the development of technology and market demands, camera modules are increasingly developing towards large pixels, large apertures, miniaturization, and thinness, which impose higher requirements on the size and structure of camera modules. In the traditional packaging process of camera modules, module manufacturers need to obtain components such as motors, optical lenses, and image sensors from different suppliers respectively, and package these components to obtain a complete camera module. Since components such as motors, optical lenses, and image sensors are provided by different suppliers, their respective technical fields are different, the required production environments are different, and the requirements for components are also different. Therefore, after the module manufacturer obtains the above components from different suppliers respectively, it is necessary to detect the quality of the above components respectively, and during the packaging process, it is necessary to make the components cooperate with each other to reduce interference between them. In other words, in the traditional packaging process of camera modules, the packaging process is relatively complex, the upstream industrial chain involved is long, and the cost of camera modules increases due to redundant assembly processes and components.

[0003] In particular, as a component with a relatively complex structure but relatively low requirements for the manufacturing environment in a camera module, the dust-free level requirement for its manufacturing workshop is relatively low, that is, the dust in the motor workshop environment is much more than that in the manufacturing workshops of optical lenses and image sensors. A motor usually includes a housing, a motor carrier disposed inside the housing, and a driving unit disposed between the housing and the motor carrier. The dust in the motor manufacturing workshop will adhere to positions such as the housing, motor carrier, and driving unit of the motor. When the module manufacturer uses the traditional packaging process to directly purchase the assembled motor from the motor manufacturer for packaging the camera module, the dust carried by the motor will cause serious contamination of the camera module. Even if the motor is cleaned, due to the complexity of the internal structure of the motor, a large amount of dust will still adhere to the inner wall of the motor, which causes these dust to escape from the inside of the motor and fall on the lens of the optical lens, the filter, or the photosensitive surface of the image sensor during the subsequent assembly process or use process of the camera module, resulting in black spots in the image formed by the camera module and affecting the imaging quality of the camera module.

[0004] In other words, the motor in the existing camera module exists as a complete module, which not only determines that the size and structure of the motor in the camera module are almost unchangeable, resulting in no module factory attempting to optimize the size and structure of the camera module from the technical ideas of optimizing the motor structure and assembly process, but also requires multiple cleaning, baking and curing, and AA calibration of the motor case during the encapsulation process of the camera module, resulting in low encapsulation efficiency and high encapsulation cost of the camera module.

[0005] In addition, as mobile electronic devices have increasingly strict requirements for the high-power zoom function and imaging quality of camera modules, the number of lenses in the optical lens is increasing, which leads to the weight of the optical lens changing accordingly, resulting in the sensitivity of the motor to drive the optical lens becoming worse and worse, causing delays in the autofocus and high-power zoom of the camera module and affecting the user experience. To solve this technical problem, most module factories have to select motors with greater driving force. However, motors with greater driving force not only increase the cost of the motor, but also increase the volume and weight of the motor, which is not conducive to the development of the camera module towards being thinner and lighter. Summary of the Invention

[0006] An object of the present invention is to provide a camera module and its electronic device. Compared with the traditional camera module configured with a motor, the camera module of the present invention is not configured with a motor, but directly integrates the optical lens and the driving unit, so that the encapsulation process of the camera module can be simplified, the encapsulation steps of the camera module can be reduced, and the encapsulation cost of the camera module can be reduced.

[0007] An object of the present invention is to provide a camera module and its electronic device. By directly integrating the optical lens and the driving unit, the camera module can reduce the assembly tolerance and cancel the height fixing process, which is beneficial to simplifying the encapsulation process of the camera module, thereby reducing the encapsulation steps of the camera module and reducing the encapsulation cost of the camera module.

[0008] An object of the present invention is to provide a camera module and its electronic device. By directly integrating the optical lens and the driving unit, the camera module can not only optimize the size and structure of the camera module, but also reduce the adverse effects of dust and other pollutants on the imaging quality of the camera module by reducing dust and other pollutants.

[0009] An object of the present invention is to provide an imaging module and an electronic device thereof. Compared with a conventional imaging module configured with a motor, the driving unit of the imaging module of the present invention can directly drive the optical lens, so that the driving load of the driving unit can be reduced and the requirement for the driving force of the driving unit can be lowered, which is beneficial to improving the sensitivity of the imaging module during autofocusing and high-magnification zooming.

[0010] An object of the present invention is to provide an imaging module and an electronic device thereof, wherein the driving unit provides a coil, and the coil is directly wound around an installation part of the optical lens through enameled wire, so as to integrate the driving unit and the optical lens.

[0011] An object of the present invention is to provide an imaging module and an electronic device thereof, wherein the corner of the installation part of the optical lens is arc-shaped to disperse and release the pressure generated by the coil on the installation part, thereby relieving the squeezing force of the coil on the optical lens and preventing the optical performance of the optical lens from being affected.

[0012] An object of the present invention is to provide an imaging module and an electronic device thereof, wherein the corner of the installation part of the optical lens is arc-shaped, so that the installation part has a smaller size, thereby further reducing the size of the imaging module.

[0013] An object of the present invention is to provide an imaging module and an electronic device thereof, wherein an object-side elastic part and an image-side elastic part of the driving unit allow the optical lens to be suspended and held in the middle of the driving unit. When the driving unit drives the optical lens, the object-side elastic part and the image-side elastic part provide damping force to allow the optical lens to be stably driven, and the object-side elastic part and the image-side elastic part can reset the optical lens.

[0014] An object of the present invention is to provide an imaging module and an electronic device thereof, wherein the object-side elastic part and / or the image-side elastic part are used to supply electric energy to the coil, so as to optimize the structure of the imaging module.

[0015] According to another aspect of the present invention, the present invention provides an imaging module, which includes:

[0016] A photosensitive component;

[0017] An optical lens, wherein the optical lens includes a lens barrel and a series of optical lenses arranged in the lens barrel, wherein the lens barrel includes an installation part, and the corner of the installation part is arc-shaped; and

[0018] A driving unit, wherein the driving unit includes a driving base, a coil, and at least one magnet. The driving base has an assembly through-hole and an assembly space extending outward from the assembly through-hole. The magnet is located in the assembly space of the driving base. The coil is wound around the side surface of the installation part, and the coil and the magnet are arranged opposite to each other.

[0019] According to an embodiment of the present invention, the side surface of the installation part is formed by four mutually spaced planar surfaces and four mutually spaced arc-shaped surfaces connected end to end, so that the corners of the installation part are arc-shaped.

[0020] According to an embodiment of the present invention, the fillet radii of the four arc-shaped surfaces of the installation part are the same.

[0021] According to an embodiment of the present invention, when viewed from the optical axis side of the camera module, the shape of the installation part is to round the four corners of a quadrilateral. Let the fillet radius parameter be R, and let the side length parameter of a body of the driving base be L. The parameters L and R satisfy the relationship: L / 4 < R < L / 2.

[0022] According to an embodiment of the present invention, the fillet radius of the arc-shaped surface of the installation part is 4.6 mm.

[0023] According to an embodiment of the present invention, when viewed from the optical axis side of the camera module, the shape of the installation part is to form four cut edges on a circle. The two opposite cut edges are parallel to each other, the extension lines of the two adjacent cut edges are perpendicular to each other, and an arc edge is formed between the two adjacent cut edges. Let the included angle parameter formed by the connection lines between the two endpoints of the arc edge and the center of the circle be θ. The included angle θ satisfies the relationship: 36° < θ < 90°.

[0024] According to an embodiment of the present invention, the included angle θ is 45°.

[0025] According to an embodiment of the present invention, the installation part has at least one groove, and the groove has an opening formed on the side surface of the installation part.

[0026] According to an embodiment of the present invention, the installation part has four such grooves, and each groove is respectively located at each corner of the installation part.

[0027] According to an embodiment of the present invention, the groove of the installation part is filled with glue.

[0028] According to an embodiment of the present invention, the lens barrel further includes at least two anti-collision bosses. At least one of the anti-collision bosses is arranged on the top surface of the installation part, and at least one of the anti-collision bosses is arranged on the bottom surface of the installation part.

[0029] According to an embodiment of the present invention, the lens barrel further includes at least one columnar protrusion that extends outward from a side surface of the mounting portion, wherein an end of the coil is wound around the columnar protrusion.

[0030] According to an embodiment of the present invention, the elastic portion is an object-side elastic portion, which includes a first outer profile element, a first inner profile element, and at least one first deformation element. The first deformation element integrally extends between the first outer profile element and the first inner profile element, wherein the first outer profile element is connected to the driving seat, and the first inner profile element is connected to a top surface of the mounting portion.

[0031] According to an embodiment of the present invention, the elastic portion is an image-side elastic portion, which includes at least one second outer profile element, at least one second inner profile element, and at least one second deformation element. The second deformation element integrally extends between the second outer profile element and the second inner profile element, wherein the second outer profile element is connected to the driving seat, and the second inner profile element is connected to a bottom surface of the mounting portion.

[0032] According to an embodiment of the present invention, the driving unit includes four columnar magnets, and these magnets are respectively located at each side of a housing of the driving seat, so that each of the magnets is disposed opposite to each straight segment of the coil.

[0033] According to an embodiment of the present invention, the driving unit includes four arc-shaped magnets, and these magnets are respectively located at each corner of a housing of the driving seat, so that each of the magnets is disposed opposite to each arc segment of the coil.

[0034] In another aspect of the present invention, the present invention further provides an electronic device, which includes:

[0035] An electronic device body; and

[0036] An imaging module, wherein the imaging module is disposed on the electronic device body, and the imaging module further includes:

[0037] A photosensitive component;

[0038] An optical lens, wherein the optical lens includes a lens barrel and a series of optical lenses disposed in the lens barrel. The lens barrel includes a mounting portion, and corners of the mounting portion are arc-shaped; and

[0039] And

[0040] A driving unit, wherein the driving unit includes a driving base, a coil, at least one magnet and an elastic part. The driving base includes a housing and a base body. The base body is installed in the housing, and an assembly through hole and an assembly space extending outward from the assembly through hole are formed between the housing and the base body. The magnet is located in the assembly space of the driving base. The coil is wound around the side surface of the installation part, and the installation part extends into the assembly space of the driving base so that the coil and the magnet are arranged opposite to each other. The inner side of the elastic part is connected to the installation part, and the outer side is connected to the housing or the base body. Description of the Drawings

[0041] Figure 1 is a cross-sectional schematic view of a camera module according to a preferred embodiment of the present invention.

[0042] Figure 2A and Figure 2B are respectively perspective schematic views of different perspectives of the partial structure of the camera module according to the above preferred embodiment of the present invention.

[0043] Figure 3 is an exploded schematic view of the partial structure of the camera module according to the above preferred embodiment of the present invention.

[0044] Figure 4 is Figure 3 an enlarged schematic view of a partial position.

[0045] Figure 5 is a cross-sectional schematic view of the partial structure of the camera module according to the above preferred embodiment of the present invention.

[0046] Figure 6 is Figure 5 an enlarged schematic view of a partial position.

[0047] Figure 7A and Figure 7B are respectively schematic views of different perspectives of the lens barrel of the camera module according to the above preferred embodiment of the present invention.

[0048] Figure 8 is a schematic view of the assembly relationship between an object-side elastic part and a lens barrel of the camera module according to the above preferred embodiment of the present invention.

[0049] Figure 9 is a schematic view of the assembly relationship between an image-side elastic part and a base body of the camera module according to the above preferred embodiment of the present invention.

[0050] Figure 10 is an exploded schematic view of a deformation example of the camera module according to the above preferred embodiment of the present invention.

[0051] Figure 11 It is a cross-sectional schematic diagram of another variant example of the imaging module according to the above-mentioned preferred embodiment of the present invention.

[0052] Figure 12 It is a schematic diagram of the application state of the imaging module according to the above-mentioned preferred embodiment of the present invention. Detailed implementation manners

[0053] Before detailing any embodiment of the present invention, it should be understood that in its application, the present invention is not limited to the construction and arrangement details of the components described in the following description or illustrated in the following drawings. The present invention is capable of other embodiments and can be practiced or carried out in various ways. Additionally, it should be understood that the wording and terms used herein are for the purpose of description and should not be regarded as restrictive. As used herein, "comprising", "comprises" or "having" and their variants are intended to cover the listed items and their equivalents as well as additional items. Unless otherwise specified or limited, the terms "mounted", "connected", "supported" and "coupled" and their variants are used broadly and cover both direct and indirect mounting, connection, support and coupling. Further, "connected" and "coupled" are not limited to physical or mechanical connection or coupling.

[0054] And, on the one hand, in the disclosure of the present invention, the orientation or positional relationship indicated by terms such as "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the above terms should not be construed as limiting the present invention; on the other hand, the term "a" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of one element can be one, while in other embodiments, the number of this element can be multiple. The term "a" should not be construed as limiting the quantity.

[0055] Referring to the attached drawings of the specification of the present invention Figures 1 to 8 , an imaging module 100 according to a preferred embodiment of the present invention will be disclosed and described in the following. The imaging module 100 includes a photosensitive unit 10, a driving unit 20, and an optical lens 30. The driving unit 20 is used to hold the optical lens 30 in the photosensitive path of the photosensitive unit 10 and to drive the optical lens 30 to reciprocate along the optical axis direction of the imaging module 100 and to move along a direction perpendicular to the optical axis direction of the imaging module 100, so as to achieve the focusing, zooming, and / or anti-shake functions of the imaging module 100.

[0056] Specifically, continuing to refer to the appended Figure 1 , the photosensitive unit 10 includes a circuit board 11, a photosensitive chip 12, and a base 13. The photosensitive chip 12 is connected to the circuit board 11. The base 13 has a light window 131. The base 13 is disposed on the circuit board 11, and the photosensitive area of the photosensitive chip 12 corresponds to the light window 131 of the base 13, so that incident light can reach the photosensitive area of the photosensitive chip 12 through the light window 131 of the base 13.

[0057] It is worth mentioning that in this specific example of the imaging module 100 shown in the appended Figure 1 , the circuit board 11 has a flat mounting surface 111 for mounting the photosensitive chip 12, and the photosensitive chip 12 and the circuit board 11 are connected by leads 14. Optionally, in other examples of the imaging module 100 of the present invention, the mounting surface 111 of the circuit board 11 may be provided with a sunken groove, and the photosensitive chip 12 is located in the sunken groove to allow the photosensitive chip 12 to sink. Optionally, in other examples of the imaging module 100 of the present invention, the photosensitive chip 12 may be mounted on a back surface 112 of the circuit board 11 by a flip-chip process, that is, the circuit board 11 may be hollowed out to form a circuit board through hole that extends from the mounting surface 111 of the circuit board 11 to the back surface 112. The non-photosensitive area of the photosensitive chip 12 is mounted on the back surface 112 of the circuit board 11, and the photosensitive area of the photosensitive chip 12 corresponds to the circuit board through hole of the circuit board 11.

[0058] It is worth mentioning that in this specific example of the imaging module 100 shown in the appended Figure 1 , the base 13 is a prefabricated part that can be mounted on the circuit board 11 to dispose the base 13 on the circuit board 11. For example, the base 13 and the circuit board 11 can be adhesively bonded to mount the base 13 on the circuit board 11. Optionally, in other examples of the imaging module 100 of the present invention, the base 13 is a molded part that is integrally combined with the circuit board 11 to dispose the base 13 on the circuit board 11. Optionally, in other examples of the imaging module 100 of the present invention, the base 13 is integrally combined with the circuit board 11 and the non-photosensitive area of the photosensitive chip 12.

[0059] Continuing to refer to the appended Figure 1, the photosensitive component 10 further includes at least one electronic component 15, and these electronic components 15 are mounted on the circuit board 11. It is worth mentioning that the electronic component 15 can be, but is not limited to, resistors, capacitors, processors, etc.

[0060] Continue to refer to the appendix Figure 1 , the photosensitive component 10 further includes a filter element 16, and the filter element 16 is mounted on the base 13 to hold the filter element 16 in the light sensing path of the photosensitive chip 12 by the base 13, so that the incident light passes through the filter element 16 and then reaches the photosensitive area of the photosensitive chip 12 through the light window 131 of the base 13.

[0061] Continue to refer to the appendix Figure 1 , the optical lens 30 is drivably mounted on the driving unit 20, and the driving unit 20 is mounted on the base 13 of the photosensitive unit 10 to hold the optical lens 30 in the light sensing path of the photosensitive chip 12 by the base 13 and the driving unit 20. When the driving unit 20 drives the optical lens 30 to move along the optical axis direction of the imaging module 100, the imaging module 100 realizes the focusing and / or zooming function. When the driving unit 20 drives the optical lens 30 to move along the direction perpendicular to the optical axis direction of the imaging module 100, the imaging module 100 realizes the anti-shake function.

[0062] Specifically, referring to the appendix Figures 1 to 8 , the driving unit 20 includes a driving base 21, at least one magnet 22, at least one coil 23, and at least one elastic part 24. The driving base 21 includes a housing 211 and a base body 212, and the driving base 21 has an assembly through hole 2101 and an assembly space 2102. The housing 211 has a housing through hole 2111, and the base body 212 has a base body through hole 2121. The base body 212 is mounted on the housing 211, and the housing through hole 2111 of the housing 211 corresponds to the base body through hole 2121 of the base body 212 to form the assembly through hole 2101 and the assembly space 2102 between the housing 211 and the mounting base 212. In this way, the assembly through hole 2101 penetrates through the driving base 21 in the middle of the driving base 21, and the assembly space 2102 extends from the assembly through hole 2101 to the periphery of the driving base 21, that is, the assembly space 2102 of the driving base 21 surrounds and communicates with the assembly through hole 2102.

[0063] In this specific example of the camera module of the present invention, the magnet 22 is disposed on the housing 211 of the drive base 21, and the magnet 22 is located in the assembly space 2102 of the drive base 21. Preferably, the housing 211 of the drive base 21 can be made of a metal material, such as a cold-rolled carbon steel sheet (SPCC) or a magnetic material such as stainless steel, to allow the housing 211 of the drive base 21 to have magnetic permeability, thereby strengthening the magnetic field intensity of the magnet 22. Moreover, the housing 211 of the drive base 21 has the effects of preventing magnetic leakage and avoiding interference from external magnetic fields. Optionally, in other examples of the camera module of the present invention, the magnet 22 can be disposed on the base body 212 of the drive base 21, and the magnet 22 is located in the assembly space 2102 of the drive base 21.

[0064] The coil 23 is wound around a lens bottom end 301 of the optical lens 30, wherein opposite sides of the elastic portion 24 are respectively connected to the drive base 21 and the optical lens 30, so as to movably hold the lens bottom end 301 of the optical lens 30 in the assembly through hole 2101 of the drive base 21 by the elastic portion 24, and the position of the coil 23 corresponds to the position of the magnet 22. Thus, when the coil 23 is powered, the magnetic field generated by the coil 23 and the magnet 22 can interact with each other to drive the optical lens 30 to move relative to the drive base 21 along the optical axis direction of the camera module 100 and to move relative to the drive base 21 along a direction perpendicular to the optical axis direction of the camera module 100, so that the camera module 100 realizes functions of focusing, zooming, and / or anti-shaking.

[0065] Preferably, the number of the magnets 22 of the drive unit 20 is four, and the four magnets 22 are arranged in a manner of surrounding the outside of the coil 23. Thus, when the coil 23 is powered, the magnetic field generated by the coil 23 and the four magnets 22 can interact with each other to evenly drive the optical lens 30 to move relative to the drive base 21 along the optical axis direction of the camera module 100. For example, in this specific example of the camera module of the present invention, the housing 211 of the drive base 21 is square and has four side edges, and each of the magnets 22 is respectively disposed on each side edge of the housing 211, so that the four magnets 22 can be arranged in a manner of surrounding the outside of the coil 23.

[0066] More specifically, the optical lens 30 includes a lens barrel 31 and a series of optical lenses 32. The lens barrel 31 includes a barrel body 311 and a mounting portion 312 integrally extending outward from the lower end of the barrel body 311. The series of optical lenses 32 are sequentially disposed inside the barrel body 311 along the height direction of the lens barrel 31. The mounting portion 312 has a top surface 3121, a bottom surface 3122 opposite to the top surface 3121, and a side surface 3123 extending between the top surface 3121 and the bottom surface 3122. The coil 23 is wound around the side surface 3123 of the mounting portion 312. Thus, the optical lens 30 forms the lens bottom end 301 at the end where the mounting portion 312 is located. Correspondingly, the optical lens 30 forms the lens top end 302 at the end away from the mounting portion 312. The mounting portion 312 of the lens barrel 31 extends into the assembly space 2102 of the driving base 21, so that the coil 23 wound around the mounting portion 312 is adjacent to the magnet 22 disposed in the assembly space 2102 of the driving base 21. The outer side of the elastic portion 24 is connected to the driving base 21, and the inner side is connected to the top surface 3121 or the bottom surface 3122 of the mounting portion 312. Thus, the optical lens 30 is drivably mounted on the driving unit 20.

[0067] With the above structure, the imaging module 100 allows the direct integration of the driving unit 20 and the optical lens 30, so that:

[0068] First, the packaging process of the imaging module 100 is simplified, which is conducive to reducing the packaging steps of the imaging module 100 and the packaging cost of the imaging module 100;

[0069] Second, the assembly tolerance of the imaging module 100 is reduced and the height setting process is cancelled, which is conducive to improving the assembly accuracy of the imaging module 100 and reducing the packaging steps of the imaging module 100;

[0070] Third, the size and structure of the imaging module 100 can be optimized to be conducive to reducing the volume of the imaging module 100, so that the imaging module 100 is suitable for being applied to electronic devices pursuing thinness and lightness;

[0071] Fourth, compared with the existing motor manufacturing workshop, the dust-free requirements of the integration workshop for the drive unit 20 and the optical lens 30 are higher. Thus, whether during the integration of the drive unit 20 and the optical lens 30 or after the completion of the drive unit 20 and the optical lens 30, pollutants such as dust adhering to the interior of the integrated body (i.e., the assembly of the drive unit 20 and the optical lens 30) are significantly reduced to reduce the adverse effects of dust and other pollutants on the imaging quality of the imaging module 100;

[0072] Fifth, the drive unit 20 can directly drive the optical lens 30, which helps to reduce the driving load of the drive unit 20 and thus reduces the requirement for the driving force of the drive unit 20. Furthermore, it helps to improve the sensitivity of the imaging module 100 during autofocus, high magnification zoom, and anti-shake.

[0073] Furthermore, in the imaging module 100 of the present invention, the coil 23 is formed by winding enameled wire around the side surface 3123 of the mounting portion 312. To prevent the coil 23 from protruding from the side surface 3123 of the mounting portion 312, a wire winding groove 3124 is formed on the side surface 3123 of the mounting portion 312. The enameled wire can be wound around the wire winding groove 3124 of the mounting portion 312 in multiple layers and / or multiple turns to form the coil 23 within the wire winding groove 3124 of the mounting portion 312, and the thickness dimension of the coil 23 is less than or equal to the depth dimension of the wire winding groove 3124 of the mounting portion 312, thereby preventing the coil 23 from protruding from the side surface 3123 of the mounting portion 312. In this way, it is possible to prevent an increase in the length, width, and height dimensions of the imaging module 100.

[0074] Even further, during the process of winding the enameled wire around the side surface 3123 of the mounting portion 312, it is necessary to heat the enameled wire to shape the coil 23 formed by the enameled wire. For example, the enameled wire can be heated by a hot air baking process to shape the coil 23 formed by the enameled wire. During the process of heating the enameled wire to shape the coil 23 formed by the enameled wire, the coil 23 will generate a squeezing force on the optical lens 30 when it shrinks. Once the squeezing force is concentrated at a local position of the optical lens 30, it will not only change the surface shape of the light incident surface and / or the light exit surface of the optical lens 32 of the optical lens 30, but also change the gap between adjacent optical lenses 32 and the field curvature, back focus, etc. of the optical lens 30, thereby affecting the optical performance of the optical lens 30.

[0075] In the imaging module 100 of the present invention, referring to FIGS. 7 and Figure 8, the corners of the mounting portion 312 of the barrel 31 of the optical lens 30 are arc-shaped to disperse and release the pressure generated by the coil 23 on the mounting portion 312 during contraction, thereby alleviating the squeezing force of the coil 32 on the optical lens 30 and preventing the optical performance of the optical lens 30 from being changed.

[0076] Specifically, the side surface 3123 of the mounting portion 312 is composed of four spaced flat surfaces 31231 and four spaced arc surfaces 31232, that is, one arc surface 31232 is connected to each of the opposite sides of any one of the flat surfaces 31231, and one flat surface 31232 is connected to each of the opposite sides of any one of the arc surfaces 31232, so that the corners of the mounting portion 312 are arc-shaped. Correspondingly, the coil 23 is composed of four spaced straight segments 231 and four spaced arc segments 232, wherein the position of each straight segment 231 of the coil 23 corresponds to the position of each flat surface 31231 of the mounting portion 312, and correspondingly, the position of each arc segment 232 of the coil 23 corresponds to the position of each arc surface 31232 of the mounting portion 312.

[0077] Reference appendix Figure 3 , in this specific example of the imaging module 100 of the present invention, the magnet 22 is a columnar magnet, which is located on the side of the housing 211, and the position of each magnet 22 corresponds to the position of each straight segment 231 of the coil 23, so as to ensure that the driving unit 20 provides sufficient driving force when the coil 23 is powered to allow the magnetic field generated by the coil 23 to interact with the magnet 22. Optionally, in other examples of the imaging module 100 of the present invention, the magnet 22 is an arc-shaped magnet, which is located at the corner of the housing 211, and the position of each magnet 22 corresponds to the position of each arc segment 232 of the coil 23, so as to ensure that the driving unit 20 provides sufficient driving force when the coil 23 is powered to allow the magnetic field generated by the coil 23 to interact with the magnet 22.

[0078] Preferably, the fillet radii of the four arc surfaces 31232 of the side surface 3123 of the mounting portion 312 are the same, so that the pressure applied by the coil 23 on each corner of the mounting portion 312 during contraction can be evenly released, thereby preventing the mounting portion 312 from being offset or skewed due to uneven force.

[0079] Preferably, the housing 211 of the driving base 21 is square, with its length dimension and width dimension being the same. Let the side length parameter of the base body 212 of the driving base 21 be L, and the fillet radius parameter of the arc surface 31232 of the side surface 3123 of the mounting portion 312 be R. That is, when viewed from one side of the optical axis of the imaging module, the shape of the mounting portion 312 of the lens barrel 31 can be regarded as having fillets at the four corners of the quadrilateral mounting portion 312, with the fillet radius parameter being R. Among them, the side length L of the base body 212 of the driving base 21 and the fillet radius R of the arc surface 31232 of the mounting portion 312 satisfy the relationship: L / 4 < R < L / 2. In this way, not only can the contracted coil 23 be prevented from applying a large extrusion force to each corner of the mounting portion 312, but also sufficient driving force can be generated between the energized coil 23 and the magnet 22.

[0080] It can be understood that when the side length L of the base body 212 of the driving base 21 and the fillet radius R of the arc surface 31232 of the mounting portion 312 satisfy R ≥ L / 2, the top view of the mounting portion 312 is approximately circular. At this time, the area where the coil 23 wound around the side surface 3123 of the mounting portion 312 and the magnet 22 can interact becomes smaller. When the coil 23 is energized, the driving force generated by the interaction between the coil 23 and the magnet 22 becomes smaller, affecting the driving effect of the driving unit 20. When the side length L of the base body 212 of the driving base 21 and the fillet radius R of the arc surface 31232 of the mounting portion 312 satisfy: R ≤ L / 4, the top view of the mounting portion 312 is a rounded quadrilateral. At this time, the mounting portion 312 is equivalent to having four turning positions, and all these four turning positions have sharp corners. This will cause the extrusion force exerted by the contracting coil 23 on the mounting portion 312 to be concentrated at these four turning positions of the mounting portion 312, which is likely to have a greater adverse impact on the optical performance of the optical lens 30.

[0081] In a specific example of the imaging module 100 of the present invention, the fillet radius of the arc surface 31232 of the side surface 3123 of the mounting portion 312 is 4.6 mm. In this way, the extrusion force exerted by the contracting coil 23 on the optical lens 30 can be balanced, and sufficient driving force can be generated between the energized coil 23 and the magnet 22.

[0082] Further, referring to the appendix Figure 7B, the four planar surfaces 31231 of the side surface 3123 of the mounting portion 312 correspond to four linear projections, and correspondingly, the four arc surfaces 31232 correspond to four arc projections. The four arc projections are co-circular, that is, the four arc projections are different parts of the same circle. Let the center parameter of the circle where the four arc projections are located be O. Let the connection between one arc projection and one planar projection be point A, and let the connection between this arc projection and another planar projection be point A'. Let the included angle parameter formed by point A, point A' and the center O be θ, and the included angle θ satisfies the relationship: 36° < θ < 90°. In this way, not only can the contracted coil 23 avoid applying a large extrusion force to each corner of the mounting portion 312, but also sufficient driving force can be generated between the energized coil 23 and the magnet 22.

[0083] In other words, from one side of the optical axis of the camera module, the shape of the mounting portion 312 of the lens barrel 31 can be regarded as having four cut edges formed on the basis of a circle. Two opposite cut edges are parallel to each other, the extension lines of two adjacent cut edges are perpendicular to each other, and an arc edge is formed between two adjacent cut edges. The included angle parameter formed by the connection lines between the two endpoints of the arc edge and the center is θ, and the included angle θ satisfies the relationship: 36° < θ < 90°.

[0084] It can be understood that when the included angle θ satisfies: θ ≥ 90°, the top view of the mounting portion 312 is approximately circular. At this time, the area where the coil 23 wound around the side surface 3123 of the mounting portion 312 and the magnet 22 can interact becomes smaller. When the coil 23 is energized, the driving force generated by the interaction between the coil 23 and the magnet 22 becomes smaller, affecting the driving effect of the driving unit 20. When the included angle θ satisfies θ ≤ 36°, the top view of the mounting portion 312 is a rounded quadrilateral. At this time, the mounting portion 312 is equivalent to having four turning positions, and all four turning positions have sharp corners, which will cause the extrusion force exerted by the coil 23 during contraction on the mounting portion 312 to concentrate on these four turning positions of the mounting portion 312, and it is easy to have a greater adverse impact on the optical performance of the optical lens 30.

[0085] In a specific example of the camera module 100 of the present invention, the included angle θ is 45°. In this way, the extrusion force exerted by the contracted coil 23 on the optical lens 30 and the sufficient driving force generated by the energized coil 23 and the magnet 22 can be balanced, and the size of the camera module 100 can be reduced to make it miniaturized.

[0086] Continue to refer to the appendix Figure 7A and Figure 7B, the mounting portion 312 further has a groove 3125, the groove 3125 has an opening formed in the side surface 3123 of the mounting portion 312, wherein the groove 3125 can release the extrusion force exerted by the coil 23 on the mounting portion 312, thereby reducing the influence of the coil 23 on the optical performance of the optical lens 30. Preferably, the groove 3125 is located at the corner of the mounting portion 312. Since the pressure generated by the coil 23 at the corner of the mounting portion 312 is relatively concentrated, by designing the corner of the mounting portion 312 into an arc shape and providing the groove 3125, the extrusion force exerted by the coil 23 on the mounting portion 312 can be effectively released, thereby reducing the influence of the coil 23 on the optical performance of the optical lens 30.

[0087] Preferably, the number of the grooves 3125 of the mounting portion 312 is four, and each of the grooves 3125 is respectively provided at each corner of the mounting portion 312, so that the extrusion force exerted by the coil 23 on each corner of the mounting portion 312 can be evenly released. Optionally, in other examples of the camera module of the present invention, each corner of the mounting portion 312 may be respectively provided with a group of the grooves 3125, that is, each corner of the mounting portion 312 may be respectively provided with two, three, four... the grooves 3125.

[0088] Preferably, the groove 3125 of the mounting portion 312 is filled with glue, that is, after the coil 23 is wound, glue can be applied in the groove 3125 of the mounting portion 312 to allow the groove 3125 to be filled with glue, so as to fix the coil 23 and the mounting portion 312 by the glue and enhance the strength.

[0089] Refer to Appendix Figure 5 and Figure 6 , in this specific example of the camera module 100 of the present invention, the driving unit 20 includes two of the elastic portions 24. One of the elastic portions 24 is defined as an object-side elastic portion 241, and the other elastic portion 24 is defined as an image-side elastic portion 242. The opposite sides of the object-side elastic portion 241 are respectively connected to the housing 211 and the top surface 3121 of the mounting portion 312, and the opposite sides of the image-side elastic portion 242 are respectively connected to the seat body 212 and the bottom surface 3122 of the mounting portion 312. Thus, the object-side elastic portion 241 and the image-side elastic portion 242 can movably hold the mounting portion 312 of the optical lens 30 in the assembly space 2102 of the driving seat 21.

[0090] Optionally, in other examples of the camera module 100 of the present invention, the driving unit 20 only includes one elastic portion 24, wherein opposite sides of the elastic portion 24 are respectively connected to the top surface 3121 of the housing 211 and the mounting portion 312, or opposite sides of the elastic portion 24 are respectively connected to the bottom surface 3122 of the housing 211 and the mounting portion 312, so as to movably hold the mounting portion 312 of the optical lens 30 in the assembly space 2102 of the driving seat 21 by the elastic portion 24.

[0091] Preferably, when the driving unit 20 drives the optical lens 30 to move along the optical axis direction of the camera module 100, in order to prevent the top surface 3121 of the mounting portion 312 from directly hitting the inner wall of the housing 211 and prevent the bottom surface 3122 of the mounting portion 312 from directly hitting the inner wall of the seat body 212, at least one anti-collision boss 313 of the lens barrel 31 is respectively provided on the top surface 3121 and the bottom surface 3122 of the mounting portion 312. Refer to the appendix Figures 3 to 7A , wherein the elastic modulus of the material of the anti-collision boss 313 is less than the elastic modulus of the material of the mounting portion 312. For example, the anti-collision boss 313 can be made of silicone material. When the mounting portion 312 is driven to move towards the housing 211, the anti-collision boss 313 provided on the top surface 3121 of the mounting portion 312 can contact the inner wall of the housing 211, so as to prevent the top surface 3121 of the mounting portion 312 from directly colliding with the inner wall of the housing 211, and thus the impact force is absorbed by the anti-collision boss 313 to prevent the housing 211 from deforming and prevent a series of optical lenses 32 provided in the cylinder 311 from deforming or shifting. Correspondingly, when the mounting portion 312 is driven to move towards the seat body 212, the anti-collision boss 313 provided on the bottom surface 3122 of the mounting portion 312 can contact the inner wall of the seat body 212, so as to prevent the bottom surface 3122 of the mounting portion 312 from directly colliding with the inner wall of the seat body 212, and thus the impact force is absorbed by the anti-collision boss 313 to prevent the seat body 212 from deforming and prevent a series of optical lenses 32 provided in the cylinder 311 from deforming or shifting.

[0092] Preferably, the number of the anti-collision bosses 313 disposed on the top surface 3121 of the mounting portion 312 is more than two, and these anti-collision bosses 313 are arranged in central symmetry with the optical axis of the camera module 100 as the axis of symmetry. In this way, when the optical lens 30 moves to make the anti-collision boss 313 disposed on the top surface 3121 of the mounting portion 312 contact the inner wall of the housing 211, the optical lens 30 can be prevented from tilting. Correspondingly, the number of the anti-collision bosses 313 disposed on the bottom surface 3122 of the mounting portion 312 is more than two, and these anti-collision bosses 313 are arranged in central symmetry with the optical axis of the camera module 100 as the axis of symmetry. In this way, when the optical lens 30 moves to make the anti-collision boss 313 disposed on the bottom surface 3122 of the mounting portion 312 contact the inner wall of the base 212, the optical lens 30 can be prevented from tilting.

[0093] It is worth mentioning that the combination manner of the anti-collision boss 313 and the mounting portion 312 is not limited in the camera module 100 of the present invention. For example, in a feasible example of the camera module 100 of the present invention, the anti-collision boss 313 can be integrally formed on the top surface 3121 of the mounting portion 312 or the bottom surface 3122 of the mounting portion 312 by an injection molding process. In another feasible example of the camera module 100 of the present invention, the anti-collision boss 313 can be bonded to the top surface 3121 of the mounting portion 312 or the bottom surface 3122 of the mounting portion 312 by glue.

[0094] Optionally, in some other examples of the camera module 100 of the present invention, the anti-collision boss 313 can be disposed on the inner wall of the housing 211. When the mounting portion 312 is driven to move in the direction of the housing 211, the anti-collision boss 313 disposed on the inner wall of the housing 211 can contact the top surface 3121 of the mounting portion 312 to prevent the top surface 3121 of the mounting portion 312 from directly colliding with the inner wall of the housing 211. Correspondingly, the anti-collision boss 313 can be disposed on the inner wall of the base 212. When the mounting portion 312 is driven to move in the direction of the base 212, the anti-collision boss 313 disposed on the inner wall of the base 212 can directly contact the bottom surface 3122 of the mounting portion 312 to prevent the bottom surface 3122 of the mounting portion 312 from directly colliding with the inner wall of the base 212.

[0095] It is worth mentioning that the anti-collision boss 313 can be integrally formed on the outer shell 211 or the seat body 212 through an injection molding process, or the anti-collision boss 313 can be adhesively bonded to the seat body 212 of the outer shell 211 with glue.

[0096] The lens barrel 31 further includes at least one columnar protrusion 314 that extends outward from the side surface 3123 of the mounting portion 312, and the end of the coil 23 can be wound around the columnar protrusion 314. Specifically, after the starting end of the enameled wire is wound around the columnar protrusion 314, it is further wound around the side surface 3123 of the mounting portion 312 to allow the enameled wire to form the coil 23. At this time, the end of the coil 23 is wound around the columnar protrusion 314.

[0097] Preferably, the size of the free end of the columnar protrusion 314 is larger than the size of the extension section, so that the coil 23 wound around the extension section of the columnar protrusion 314 can be prevented from falling off from the free end of the columnar protrusion 314. For example, in a specific example of the imaging module 100 of the present invention, the columnar protrusion 314 can be in a "T" shape.

[0098] Preferably, the lens barrel 31 includes two columnar protrusions 314. More preferably, the two columnar protrusions 314 extend outward from the two arc surface portions 31232 of the mounting portion 312 respectively, so as to avoid the columnar protrusions 314 affecting the size of the imaging module 100. For example, the two columnar protrusions 314 can extend outward from the two symmetric arc surface portions 31232 of the mounting portion 312 respectively, or the two columnar protrusions 314 can extend outward from the two adjacent arc surface portions 31232 of the mounting portion 312 respectively.

[0099] Continue to refer to the attached Figure 3 and Figure 8 As shown, the object-side elastic portion 241 includes a first outer profile element 2411, a first inner profile element 2412, and at least one first deformation element 2413. The first deformation element 2413 integrally extends between the first outer profile element 2411 and the first inner profile element 2412. In other words, the first outer profile element 2411, the first inner profile element 2412, and the first deformation element 2413 of the object-side elastic portion 241 are of an integral structure, which is beneficial to improving the flatness of the object-side elastic portion 241, thereby reducing the tilt tolerance of the optical lens 30 and improving the assembly accuracy of the imaging module 100.

[0100] The first outer profile element 2411 of the object-side elastic part 241 is fixedly arranged on the housing 211 of the driving seat 21. For example, the first outer profile element 2411 can be fixedly arranged on the housing 211 of the driving seat 21 by means of adhesion, thermal riveting, gluing or embedding. Correspondingly, the first inner profile element 2412 of the object-side elastic part 241 is fixedly arranged on the top surface 3121 of the mounting part 312. For example, the first inner profile element 2412 can be fixedly arranged on the top surface 3121 of the mounting part 312 by means of adhesion, thermal riveting, gluing or embedding. With the above structure, the object-side elastic part 241 allows the lens bottom end 301 of the optical lens 30 to be suspendedly arranged in the assembly through hole 2101 of the driving seat 21.

[0101] When the coil 23 of the driving unit 20 is energized and the driving force generated by the cooperation of the coil 23 and the magnet 22 drives the optical lens 30 to move along the optical axis direction of the camera module 100, the first deformation element 2413 of the object-side elastic part 241 can generate elastic deformation to accumulate elastic force. When the coil 23 of the driving unit 20 is powered off, the first deformation element 2413 of the object-side elastic part 241 can provide a restoring force during the process of restoring to the initial state to drive the optical lens 30 to move back along the optical axis direction of the camera module 100.

[0102] Preferably, the surface of the first inner profile element 2412 of the object-side elastic part 241 is lower than the top surface 3121 of the mounting part 312, so that when the optical lens 30 is driven to move along the optical axis direction of the camera module 100, the object-side elastic part 241 can be prevented from being collided, thereby ensuring the reliability of the camera module 100.

[0103] In this specific example of the camera module 100 of the present invention, the first outer profile element 2411 of the object-side elastic part 241 is in a square shape to match the shape of the housing 211, and the first inner profile element 2412 of the object-side elastic part 241 is in a circular ring shape to match the shape of the barrel 311 of the lens barrel 31.

[0104] Preferably, the object-side elastic part 241 includes four of the first deformation elements 2413. These first deformation elements 2413 are arranged in central symmetry with the optical axis of the imaging module 100 as the axis of symmetry. Thus, when the driving unit 20 drives the optical lens 30 to move along the optical axis direction of the imaging module 100, these first deformation elements 2413 of the object-side elastic part 241 respectively accumulate the same elastic force. And after the driving force provided by the driving unit 20 disappears, during the process of these first deformation elements 2413 restoring to the initial state, they can evenly apply force to the optical lens 30 in the circumferential direction of the optical lens 30 to prevent the optical lens 30 from tilting.

[0105] Preferably, the first deformation element 2413 of the object-side elastic part 241 extends between the first outer profile element 2411 and the first inner profile element 2412 in a bent manner, so as to enhance the deformation ability of the first deformation element 2413 to allow the optical lens 30 to have a greater stroke, and at the same time reduce the driving resistance of the optical lens 30 to improve the sensitivity of focusing, zooming, and / or anti-shake of the imaging module 100.

[0106] In other words, by arranging the bent first deformation element 2413 between the first outer profile element 2411 and the first inner profile element 2412, the imaging module 100 allows the driving unit 20 to drive the optical lens 30 to move a greater stroke with a smaller driving force.

[0107] It is worth mentioning that limited by the distance between the first outer profile element 2411 and the first inner profile element 2412 of the object-side elastic part 241, the length dimension of the first deformation element 2413 is positively correlated with the number of bends of the first deformation element 2413. That is, the longer the length dimension of the first deformation element 2413, the more bends the first deformation element 2413 has, and for the first deformation element 2413 with a larger number of bends, it is easier to reset after deformation.

[0108] Preferably, the width dimension of the first deformation element 2413 is small, making it in a filamentous structure. In this way, when the coil 23 of the driving unit 20 is energized and the driving force is generated by the cooperation of the coil 23 and the magnet 22 to drive the optical lens 30 to move along the optical axis direction of the imaging module 100, while the first deformation element 2413 accumulates elastic force by deforming, it can provide a damping force that balances the driving force generated by the cooperation of the coil 23 and the magnet 22 during the deformation process, so that the optical lens 30 can be driven smoothly and held steadily at a specific position.

[0109] Preferably, the object-side elastic part 241 has a flaky structure, and its thickness dimension is between 30 μm and 60 μm, so that the object-side elastic part 241 has good elasticity and can provide sufficient restoring force subsequently, and is convenient for controlling the height dimension of the imaging module 100.

[0110] Preferably, when the coil 23 of the driving unit 20 is not energized, the height position of the first outer profile element 2411 of the object-side elastic part 241 is higher than the height position of the first inner profile element 2412, so that the stroke of the optical lens 30 can be increased.

[0111] Further, continue to refer to the attached Figure 3 and Figure 9 The image-side elastic part 242 includes at least one second outer profile element 2421, at least one second inner profile element 2422 and at least one second deformation element 2423, and the second deformation element 2423 integrally extends between the second outer profile element 2421 and the second inner profile element 2422.

[0112] The second outer profile element 2421 of the image-side elastic part 242 is fixedly arranged on the seat body 212 of the driving seat 21. For example, the second outer profile element 2421 can be fixedly attached to the seat body 212 of the driving seat 21 by means of bonding, thermo-riveting adhesive or embedding. Correspondingly, the second inner profile element 2422 of the image-side elastic part 242 is fixedly arranged on the bottom surface 3122 of the mounting part 312. For example, the second inner profile element 2422 can be fixedly arranged on the bottom surface 3122 of the mounting part 312 by means of bonding, thermo-riveting, adhesive or embedding. Through the above structure, the image-side elastic part 242 allows the lens bottom end 301 of the optical lens 30 to be suspendedly arranged in the assembly through hole 2101 of the driving seat 21.

[0113] When the coil 23 of the driving unit 20 is energized and the driving force generated by the cooperation of the coil 23 and the magnet 22 drives the optical lens 30 to move along the optical axis direction of the imaging module 100, the second deformation element 2423 of the image-side elastic part 242 can generate elastic deformation to accumulate elastic force. When the coil 23 of the driving unit 20 is powered off, the second deformation element 2423 of the image-side elastic part 242 can provide a restoring force during the process of restoring to the initial state to drive the optical lens 30 to move and reset along the optical axis direction of the imaging module 100.

[0114] Preferably, the surface of the second inner profile element 2422 of the image-side elastic part 242 is lower than the bottom surface 3122 of the mounting part 312. In this way, when the optical lens 30 is driven to move along the optical axis direction of the imaging module 100, the image-side elastic part 242 can be prevented from being collided, thereby ensuring the reliability of the imaging module 100.

[0115] Preferably, the image-side elastic part 242 has a flaky structure, so that the image-side elastic part 242 has good elasticity and can provide sufficient restoring force in the subsequent process, and is also convenient for controlling the height dimension of the imaging module 100.

[0116] That is to say, in this specific example of the imaging module 100 of the present invention, the object-side elastic part 241 is used to connect the top surface 3121 of the mounting part 312 of the optical lens 30 to the driving seat 21, and the image-side elastic part 242 is used to connect the bottom surface 3122 of the mounting part 312 of the optical lens 30 to the driving seat 21. That is, the object-side elastic part 241 and the image-side elastic part 242 respectively connect the mounting part 312 and the driving seat 21 on the opposite sides of the mounting part 312. In this way, the object-side elastic part 241 and the image-side elastic part 242 can cooperate with each other to prevent the optical lens 30 from being deflected during the process of being driven to move along the optical axis direction of the imaging module 100, thereby ensuring the reliability and stability of the imaging module 100.

[0117] Preferably, when the coil 23 of the driving unit 20 is not energized, the height position of the second outer profile element 2421 of the image-side elastic part 242 is lower than the height position of the second inner profile element 2422, so that the stroke of the optical lens 30 can be increased.

[0118] Furthermore, in this specific example of the imaging module 100 of the present invention, the image-side elastic part 242 adopts a split structure, which includes two elastic parts 2420 arranged symmetrically. One of the two elastic parts 2420 connects a side part of the bottom surface 3122 of the mounting part 312 and a side part of the driving seat 21, and the other elastic part 2420 connects the other side part of the bottom surface 3122 of the mounting part 312 and the other side part of the driving seat 21. In this way, not only can the integration difficulty of the optical lens 30 and the driving unit 20 be simplified, but also the conductivity of the coil 23 can be realized by using the conductivity of the two elastic parts 2420.

[0119] Specifically, each of the elastic portions 2420 includes two of the second outer profile elements 2421, one of the second inner profile elements 2422, and two of the second deformation elements 2423. The second inner profile element 2422 is arc-shaped to match the shape of the barrel 311 of the lens barrel 31. The two second outer profile elements 2421 are symmetrically disposed outside the second inner profile element 2422, and each of the second outer profile elements 2421 is fixedly disposed at each corner of the seat body 212. Each of the second deformation elements 2423 extends bendably between each of the second outer profile elements 2421 and the second inner profile element 2422.

[0120] It is worth mentioning that the second deformation element 2423 of each of the elastic portions 2420 of the image-side elastic portion 242 extends between the second outer profile element 2421 and the second inner profile element 2422 in a bent manner to enhance the deformation ability of the second deformation element 2423 and allow the optical lens 30 to have a greater stroke. At the same time, the driving resistance of the optical lens 30 is reduced to improve the sensitivity of focusing, zooming, and / or anti-shake of the imaging module 100. In other words, by providing the bent second deformation element 2423 between the second outer profile element 2421 and the second inner profile element 2422, the imaging module 100 allows the driving unit 20 to drive the optical lens 30 to move a greater stroke with a smaller driving force.

[0121] It is also worth mentioning that limited by the distance between the second outer profile element 2421 and the second inner profile element 2422 of the image-side elastic portion 242, the length dimension of the second deformation element 2423 is positively correlated with the number of bends of the second deformation element 2423. That is, the longer the length dimension of the second deformation element 2423, the more bends the second deformation element 2423 has, and for the second deformation element 2423 with a larger number of bends, it is easier to reset after deformation.

[0122] Preferably, both ends of the coil 23 are respectively connected to each of the elastic portions 2420 of the image-side elastic portion 242, and each of the elastic portions 2420 is respectively connected to the circuit board 11 of the photosensitive unit 10. In this way, the circuit board 11, the two elastic portions 2420, and the coil 23 can form a circuit to allow the circuit board 11 to supply current to the coil 23 through each of the elastic portions 2420.

[0123] Preferably, one of the two second contour elements 2421 of each elastic part 2420 is adjacent to the columnar protrusion 314 of the lens barrel 31, so that the coil 23 formed on the end of the columnar protrusion 314 is conductively connected to the second contour element 2421.

[0124] Further, the driving unit 20 includes at least two wiring terminals 25, each of which is respectively disposed on the seat body 212, wherein each wiring terminal 25 is respectively connected to each elastic part 2420 of the image-side elastic part 242, and each wiring terminal 25 can be connected to the circuit board 11 of the photosensitive component 10, so that the circuit board 11 can supply power to the coil 23 through each wiring terminal 25 and each elastic part 2420.

[0125] Preferably, the middle parts of each wiring terminal 25 are respectively embedded in the seat body 212. For example, when the seat body 212 is injection-molded, the middle parts of each wiring terminal 25 are allowed to be embedded in the seat body 212, so that one end of each wiring terminal 25 is exposed and can be connected to each elastic part 2420 of the image-side elastic part 242, and the other end of each wiring terminal 25 is exposed and can be connected to the circuit board 11 of the photosensitive component 10. Preferably, the two wiring terminals 25 are adjacent to each other, so that the adjacent positions of the two elastic parts 2420 can be respectively welded to the two wiring terminals 25 without adjusting the position of the welding equipment, which helps to simplify the assembly process and improve the assembly efficiency. Optionally, each elastic part 2420 and each wiring terminal 25 can be connected by conductive adhesive.

[0126] Further, the driving seat 21 includes at least two struts 213, which respectively extend upward integrally from each corner of the seat body 212. The struts 213 and the seat body 212 can be integrally injection-molded, or after the seat body 212 is formed, the struts 213 are integrally formed on the seat body 212 by an injection process. When installing the outer shell 211 of the driving seat 21 on the seat body 212, these struts 213 are used to limit the installation position of the outer shell 211, so as to prevent the outer shell 211 and the seat body 212 from being misaligned.

[0127] Preferably, the driving base 21 further includes a plurality of bosses 214 which integrally extend upward from the side of the base body 212 respectively. After the housing 211 is mounted on the base body 212, these bosses 214 abut against the inner wall of the housing 211 inside the housing 211, thus preventing contaminants such as dust from entering the inside of the camera module 100 through the gap between the housing 211 and the base body 212, and thereby preventing the camera module 100 from being contaminated.

[0128] Attached Figure 10 shows a variant example of the camera module 100. Different from the camera module 100 shown in Attached Figures 1 to 9 In this variant example of the camera module 100 shown in Attached Figure 10 the image-side elastic part 242 is an integral structure, and the second inner profile element 2422 of the image-side elastic part 242 is a complete annular body.

[0129] Attached Figure 11 shows a variant example of the camera module 100. Different from the camera module 100 shown in Attached Figures 1 to 9 In this variant example of the camera module 100 shown in Attached Figure 11 the base body 212 of the driving base 21 is not mounted on the base 13 of the photosensitive unit 10, but the base body 212 of the driving base 21 replaces the base 13 of the photosensitive unit 10 so that the base body 212 is directly mounted on the circuit board 11 of the photosensitive unit 10.

[0130] Figure 12 shows an electronic device which includes an electronic device body 200 and the camera module 100 disposed on the electronic device body 200.

[0131] In some embodiments, the camera module 100 may be disposed on the front side of the electronic device body 200 to form a front camera module 100. In some other embodiments, the camera module 100 may be disposed on the rear side of the electronic device body 100 to form a rear camera module.

[0132] Those skilled in the art can understand that the above embodiments are only examples, and the features of different embodiments can be combined with each other to obtain embodiments that are easily conceivable according to the content disclosed in the present invention but not explicitly pointed out in the drawings.

[0133] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The object of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and without departing from the said principles, any variations or modifications can be made to the embodiments of the present invention.

Claims

1. An imaging module, characterized in that, Comprising: A photosensitive component; An optical lens, wherein the optical lens includes a lens barrel and a series of optical lenses disposed in the lens barrel, wherein the lens barrel includes a mounting portion, and the corners of the mounting portion are arc-shaped; and A driving unit, wherein the driving unit includes a driving seat, a coil, and at least one magnet, wherein the driving seat has an assembly through hole and an assembly space extending outward from the assembly through hole, wherein the magnet is located in the assembly space of the driving seat, wherein the coil is wound around the side surface of the mounting portion, and the coil and the magnet are disposed opposite to each other, wherein, when viewed from the optical axis side of the imaging module, the shape of the mounting portion is that the four corners of a quadrilateral are rounded, the fillet radius parameter is set as R, and the side length parameter of a body of the driving seat is set as L, and the parameters L and R satisfy the relationship: L / 4 < R < L / 2.

2. The imaging module according to claim 1, wherein the side surface of the mounting portion is formed by four mutually spaced flat surfaces and four mutually spaced arc surfaces connected end to end, so that the corners of the mounting portion are arc-shaped.

3. The imaging module according to claim 2, wherein the fillet radii of the four arc surfaces of the mounting portion are the same.

4. The imaging module according to claim 1, wherein the fillet radius of the arc surface of the mounting portion is 4.6 mm.

5. The imaging module according to claim 1, wherein, when viewed from the optical axis side of the imaging module, the shape of the mounting portion is that four cut edges are formed on a circle, two opposite cut edges are parallel to each other, the extension lines of two adjacent cut edges are perpendicular to each other, and an arc edge is formed between two adjacent cut edges, the included angle parameter formed by the connection lines between the two end points of the arc edge and the center of the circle is set as θ, and the included angle θ satisfies the relationship: 36° < θ < 90°.

6. The imaging module according to claim 5, wherein the included angle θ is 45°.

7. The imaging module according to any one of claims 1 to 5, wherein the mounting portion has at least one groove, and the groove has an opening formed on the side surface of the mounting portion.

8. The imaging module according to claim 7, wherein the mounting portion has four such grooves, and each groove is respectively located at each corner of the mounting portion.

9. The imaging module according to claim 7, wherein the groove of the mounting portion is filled with glue.

10. The imaging module according to any one of claims 1 to 5, wherein the lens barrel further includes at least two anti-collision bosses, at least one of the anti-collision bosses is disposed on the top surface of the mounting portion, and at least one of the anti-collision bosses is disposed on the bottom surface of the mounting portion.

11. The imaging module according to any one of claims 1 to 5, wherein the lens barrel further includes at least one columnar protrusion, the columnar protrusion extends outward from the side surface of the mounting portion, and the end of the coil is wound around the columnar protrusion.

12. The imaging module according to any one of claims 1 to 5, wherein the driving unit further includes an elastic part, and the elastic part is an object-side elastic part, which includes a first outer profile element, a first inner profile element, and at least one first deformation element. The first deformation element integrally extends between the first outer profile element and the first inner profile element, wherein the first outer profile element is connected to the driving seat, and the first inner profile element is connected to the top surface of the mounting part.

13. The imaging module according to any one of claims 1 to 5, wherein the driving unit further includes an elastic part, and the elastic part is an image-side elastic part, which includes at least one second outer profile element, at least one second inner profile element, and at least one second deformation element. The second deformation element integrally extends between the second outer profile element and the second inner profile element, wherein the second outer profile element is connected to the driving seat, and the second inner profile element is connected to the bottom surface of the mounting part.

14. The imaging module according to any one of claims 1 to 5, wherein the driving unit includes four columnar magnets, and these magnets are respectively located on each side of a housing of the driving seat, so that each magnet is disposed opposite to each straight segment of the coil.

15. The imaging module according to any one of claims 1 to 5, wherein the driving unit includes four arc-shaped magnets, and these magnets are respectively located at each corner of a housing of the driving seat, so that each magnet is in a relative position with each arc segment of the coil.

16. An electronic device, characterized in that, Comprising: An electronic device body; And The imaging module according to any one of claims 1 to 15, wherein the imaging module is disposed on the electronic device body.

Images