Lens assembly, camera module and electronic equipment

Abstract

The invention discloses a lens assembly, and the lens assembly comprises a housing which is internally provided with an accommodation cavity and comprises a pedestal which defines at least a local accommodation cavity; the optical lens is restrained in the containing cavity in the mode of moving along the optical axis of the optical lens and comprises a lens barrel and a lens assembled in the lens barrel, a boss is arranged on the peripheral face of the lens barrel, the boss is provided with a first surface and a second surface which are opposite in the direction of the optical axis, the first surface is adjacent to the light inlet end of the optical lens, and the second surface is adjacent to the light outlet end of the optical lens. The second surface is adjacent to the light emitting end of the optical lens; comprising a mounting part and a first bearing part, the mounting part is fixed to the first surface of the boss through a connecting structure, the first bearing part is located on the side of the boss, and a gap is formed between the first bearing part and the side wall of the boss; and the driving mechanism is arranged between the base and the first bearing part so as to drive the bracket and the optical lens to move along the optical axis. The invention also relates to a camera module applying the lens assembly, and also relates to electronic equipment applying the camera module.

Description

Technical Field

[0001] The present invention relates to a camera device, in particular to a lens assembly, and also to a camera module using the lens assembly, and also to an electronic device using the camera module. Background Art

[0002] In recent years, electronic products and smart devices have been increasingly moving towards miniaturization and high performance. This development trend has put forward more stringent requirements on the size and imaging capabilities of camera modules, which are one of the standard configurations of electronic products and smart devices. This has also caused the electronic products and smart device industries to pursue compactness and functional integration of camera modules. The auto focus, zoom and anti-shake functions are integrated into the camera modules in this development trend to achieve the auto focus, zoom and anti-shake functions of the camera modules.

[0003] At present, the existing camera modules usually include important components such as photosensitive components, optical lenses and voice coil motors. Among them, the voice coil motor, as the driving element of the camera module, mainly includes a motor base, a lens carrier movably constrained to the motor base, and a coil and a magnet relatively arranged between the motor base and the lens carrier, such as the coil is arranged on the motor base and the magnet is arranged on the lens carrier, or the magnet is arranged on the motor base and the coil is arranged on the lens carrier. The aforementioned lens carrier is provided with a mounting hole for the optical lens to be installed therein, and the lens carrier is driven to move by the thrust generated between the coil and the magnet based on the electromagnetic principle, thereby driving the optical lens to move, so as to realize the automatic focus, zoom and anti-shake functions of the camera module.

[0004] Some camera modules also eliminate the lens carrier and directly set the coil or magnet on the outer surface of the lens barrel to reduce the assembly tolerance between the optical lens and the lens carrier. It also eliminates the height determination process in the traditional packaging process, simplifies the assembly process, avoids problems such as poor height determination and dirty glue that are prone to occur in the traditional height determination process, and can also reduce the height of the camera module.

[0005] In the camera module after the lens carrier is eliminated, the coil is usually wound by enameled wire, which shrinks when it is shaped by hot air baking during the winding process, and the magnet is usually attached to the lens barrel with glue. In this way, whether the coil or the magnet is installed on the lens barrel, it often involves baking and shaping after assembly; and the installation method of the coil or the magnet causes the coil or the magnet to directly apply force to the outer periphery of the lens barrel. However, since the lens barrel of the optical lens is usually made of thermoplastic resins such as polyamide, polycarbonate, etc., the lens barrel is easily deformed due to force and baking after the coil or the magnet is installed, thereby causing the lens mounting hole in the lens barrel to deform, and then causing the peripheral edge of the optical lens to deform due to extrusion, resulting in a larger unstable range of field curvature fluctuation of the optical lens and a larger MTF value, thereby affecting the imaging performance of the optical lens.

[0006] In addition, with the development of electronic products, the requirements for miniaturization and thinness of camera modules are getting higher and higher. Taking the camera module of mobile phones as an example, as mobile phones are becoming thinner and lighter, the main requirement for camera modules is thickness. In addition, for the front camera module, as the screen-to-body ratio of mobile phones increases, the lens of the front camera module needs to be as close to the edge of the mobile phone screen as possible. Since the existing front camera module is usually set in the top center or upper left corner of the mobile phone screen, this limits the spacing parameter range between the lens and one side edge of the camera module or between the adjacent two side edges, that is, it is required to design an extremely narrow edge on the camera module. Summary of the invention

[0007] One advantage of the present invention is that it provides a lens assembly, which changes the pressure-bearing direction of the lens barrel of the optical lens during integrated assembly, can avoid the deformation of the lens mounting hole in the lens barrel to the greatest extent, improve the deformation of the peripheral edge of the lens, thereby reducing the field curvature fluctuation instability range and MTF value of the optical lens, and improving the imaging performance of the optical lens.

[0008] Another advantage of the present invention is that it provides a lens assembly that can avoid overheating during the integrated assembly process, making the integrated assembly less likely to cause deformation of the lens mounting hole.

[0009] Another advantage of the present invention is that it provides a lens assembly in which the pressure-bearing part of the lens barrel is further away from the lens mounting hole, making it less likely for the lens mounting hole to be deformed during integrated assembly.

[0010] Another advantage of the present invention is that it provides a lens assembly, and the pressure-bearing area of ​​the lens barrel is larger, so that the pressure-bearing area of ​​the lens barrel is borne by a smaller pressure, and the integrated assembly is less likely to cause deformation of the lens mounting hole.

[0011] One advantage of the present invention is that it provides a camera module that can not only simplify the assembly process, but more importantly, allow for a design with a thinner thickness and / or extremely narrow edges, thereby reducing the size of the model module and facilitating the miniaturization design of the camera module.

[0012] One advantage of the present invention is that it provides a camera module that can reduce the tilt of the optical lens caused by inevitable processing tolerances, thereby reducing the tilt angle of the optical lens.

[0013] An advantage of the present invention is that it provides a camera module that can reduce the tilt of the optical lens during the integrated assembly process, thereby reducing the tilt angle of the optical lens.

[0014] In order to achieve at least one of the above advantages or other advantages and purposes, the present invention provides a lens assembly, characterized in that it includes:

[0015] A housing having an accommodating cavity therein, wherein the housing comprises a base defining at least a portion of the accommodating cavity;

[0016] An optical lens is constrained inside the accommodating cavity in a manner that it can move along its optical axis, and the optical lens comprises a lens barrel and a lens assembled in the lens barrel, wherein a boss is provided on the outer peripheral surface of the lens barrel, and the boss has a first surface and a second surface opposite to each other along the optical axis direction, the first surface is adjacent to the light incident end of the optical lens, and the second surface is adjacent to the light emitting end of the optical lens;

[0017] The bracket comprises a mounting portion and a first bearing portion, wherein the mounting portion is fixed to the first surface of the boss through a connecting structure, and the first bearing portion is located on the side of the boss and has a gap with the side wall of the boss;

[0018] The driving mechanism is arranged between the base and the first bearing portion of the bracket to drive the bracket and the optical lens to move along the optical axis.

[0019] In some embodiments of the present invention, the bracket is made of metal.

[0020] In some embodiments of the present invention, the first bearing portion of the bracket extends from an edge of one side of the mounting portion toward a direction where the second surface of the boss is located.

[0021] In some embodiments of the present invention, a guiding mechanism is provided between the side wall corresponding to the first bearing portion of the bracket and the base on the first bearing portion and / or the boss of the bracket.

[0022] In some embodiments of the present invention, the guide mechanism includes a guide portion and a guide groove that are relatively arranged, and a guide member clamped between the guide portion and the corresponding guide groove, the base has a support column extending along the optical axis direction, and the guide portion is arranged on the support column, and the guide groove is arranged on the first bearing portion of the bracket.

[0023] In some embodiments of the present invention, the guide mechanism includes a guide portion and a guide groove that are relatively arranged, and a guide member clamped between the guide portion and the guide groove, the base has a support column extending along the optical axis direction, and the guide portion is arranged on the support column, and the guide groove is arranged on the side wall of the boss corresponding to the first bearing portion of the bracket.

[0024] In some embodiments of the present invention, there are at least three groups of connection structures, and the three groups of connection structures are not in the same straight line, so that the mounting portion of the bracket can be evenly mounted on the boss of the optical lens.

[0025] In some embodiments of the present invention, the boss of the optical lens and the mounting portion of the bracket are riveted together by a cold riveting process.

[0026] In some embodiments of the present invention, the connection structure is adjacent to the side wall of the boss.

[0027] In some embodiments of the present invention, the mounting portion of the bracket is annular and has a center hole, and the first surface of the boss is provided with at least one first stop portion, wherein the at least one first stop portion is located in the center hole of the mounting portion of the bracket and protrudes from the bracket.

[0028] In some embodiments of the present invention, a mounting portion of the bracket is provided with a notch on a side away from the first bearing portion, and a first stop portion is located in the notch.

[0029] In some embodiments of the present invention, the mounting portion of the bracket covers 60-70% of the area of ​​the first surface.

[0030] In some embodiments of the present invention, the base has a light window for allowing light from the optical lens to pass through the accommodating cavity, and a color filter is provided at the light window.

[0031] In some embodiments of the present invention, the magnetic element is mounted on a first bearing portion of the bracket, a first circuit board is provided on a side of the base, and the coil is electrically connected to the first circuit board.

[0032] According to another aspect of the present invention, the present invention further provides a camera module, characterized in that a lens assembly as described above is applied, the base is provided with a photosensitive assembly located outside the accommodating cavity, and the optical lens is located on the photosensitive path of the photosensitive assembly.

[0033] According to another aspect of the present invention, the present invention further provides a camera module, characterized in that the lens assembly as described above is applied, the base is provided with a photosensitive assembly located outside the accommodating cavity, and the optical lens is located on the photosensitive path of the photosensitive assembly;

[0034] The base is provided with an annular shoulder, the central hole of the shoulder constitutes the light window, and the shoulder has a first side and a second side opposite to each other, the first side is adjacent to the first bearing part of the bracket, the second side is away from the first bearing part of the bracket, and the width of the first side is greater than the width of the second side.

[0035] According to another aspect of the present invention, the present invention further provides a camera module, characterized in that the lens assembly as described above is applied, the base is provided with a photosensitive assembly located outside the accommodating cavity, and the optical lens is located on the photosensitive path of the photosensitive assembly;

[0036] The base is provided with an annular shoulder, the central hole of the shoulder constitutes the light window, and the shoulder has a first side portion and a second side portion opposite to each other, the first side portion is adjacent to the first bearing portion of the bracket, the second side portion is away from the first bearing portion of the bracket, and the width of the first side portion is greater than the width of the second side portion;

[0037] The base is sunken toward the interior of the accommodating cavity to form a recessed portion, the recessed portion is located between the side wall on the base corresponding to the first bearing portion and the first side portion, and the recessed portion is located below the coil.

[0038] According to another aspect of the present invention, the present invention further provides an electronic device, characterized in that it includes a main body, and the main body is installed with the camera module as described above.

[0039] Further objects and advantages of the present invention will be fully apparent from an understanding of the following description and the accompanying drawings.

[0040] These and other objects, features and advantages of the present invention will be more fully understood from the following detailed description, accompanying drawings and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a three-dimensional structural diagram of the camera module in Example 1 of the present invention.

[0042] Figure 2 It is a top view of the camera module in Example 1 of the present invention.

[0043] Figure 3 yes Figure 2 Section view along the AA direction.

[0044] Figure 4 yes Figure 2 Cross-sectional view along the BB direction.

[0045] Figure 5 It is a three-dimensional structural diagram of the lens assembly in Example 1 of the present invention.

[0046] Figure 6 It is a three-dimensional structural diagram of the lens assembly without the cover in Embodiment 1 of the present invention.

[0047] Figure 7 It is a three-dimensional exploded view of the lens assembly in Example 1 of the present invention.

[0048] Figure 8 It is a cross-sectional view of the camera module in Example 2 of the present invention.

[0049] Fig. 9 This is a three-dimensional structural diagram of the lens assembly in Example 3 of the present invention after the cover body is removed.

[0050] Fig.10 It is a three-dimensional exploded view of the lens assembly in Example 3 of the present invention. DETAILED DESCRIPTION

[0051] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0052] Those skilled in the art should understand that, in the disclosure of the present invention, the orientation or position relationship indicated by the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 understood as limiting the present invention.

[0053] In the present invention, the term "one" in the claims and the specification should be understood as "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. Unless it is clearly indicated in the disclosure of the present invention that the number of the element is only one, the term "one" cannot be understood as unique or single, and the term "one" cannot be understood as a limitation on the quantity.

[0054] In the description of the present invention, it should be understood that "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through a medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0057] Application Overview

[0058] In recent years, electronic products and smart devices have been increasingly moving towards miniaturization and high performance. This development trend has put forward more stringent requirements on the size and imaging capabilities of camera modules, which are one of the standard configurations of electronic products and smart devices. This has also caused the electronic products and smart device industries to pursue compactness and functional integration of camera modules. The auto focus, zoom and anti-shake functions are integrated into the camera modules in this development trend to achieve the auto focus, zoom and anti-shake functions of the camera modules.

[0059] At present, the existing camera modules usually include important components such as photosensitive components, optical lenses and voice coil motors. Among them, the voice coil motor, as the driving element of the camera module, mainly includes a motor base, a lens carrier movably constrained to the motor base, and a coil and a magnet relatively arranged between the motor base and the lens carrier, such as the coil is arranged on the motor base and the magnet is arranged on the lens carrier, or the magnet is arranged on the motor base and the coil is arranged on the lens carrier. The aforementioned lens carrier is provided with a mounting hole for the optical lens to be installed therein, and the lens carrier is driven to move by the thrust generated between the coil and the magnet based on the electromagnetic principle, thereby driving the optical lens to move, so as to realize the automatic focus, zoom and anti-shake functions of the camera module.

[0060] Some camera modules also eliminate the lens carrier and directly set the coil or magnet on the outer surface of the lens barrel to reduce the assembly tolerance between the optical lens and the lens carrier. It also eliminates the height determination process in the traditional packaging process, simplifies the assembly process, avoids problems such as poor height determination and dirty glue that are prone to occur in the traditional height determination process, and can also reduce the height of the camera module.

[0061] In the camera module after the lens carrier is eliminated, the coil is usually wound by enameled wire, which shrinks when it is shaped by hot air baking during the winding process, and the magnet is usually attached to the lens barrel with glue. In this way, whether the coil or the magnet is installed on the lens barrel, it often involves baking and shaping after assembly; and the installation method of the coil or the magnet causes the coil or the magnet to directly apply force to the outer periphery of the lens barrel. However, since the lens barrel of the optical lens is usually made of thermoplastic resins such as polyamide, polycarbonate, etc., the lens barrel is easily deformed due to force and baking after the coil or the magnet is installed, thereby causing the lens mounting hole in the lens barrel to deform, and then causing the peripheral edge of the optical lens to deform due to extrusion, resulting in a larger unstable range of field curvature fluctuation of the optical lens and a larger MTF value, thereby affecting the imaging performance of the optical lens.

[0062] Specifically, the technical concept of the present application is to add a bracket to the lens assembly so that the first bearing part of the bracket supports a part of the driving mechanism. Since the first bearing part of the bracket is located on the side of the boss and has a gap with the side wall of the boss, the first bearing part of the bracket can isolate the part of the driving mechanism from the outer peripheral surface of the optical lens, which can avoid the local installation of the driving mechanism from exerting radial extrusion on the lens barrel and causing the lens mounting hole in the lens barrel to deform, thereby avoiding the peripheral edge of the lens from being deformed due to extrusion; and, the mounting part of the bracket is fixed to the first surface of the boss through a connecting structure, so that the mounting part of the bracket applies force to the boss in at least a local area of ​​the periphery of the lens along the optical axis direction, changes the pressure direction of the lens barrel of the optical lens, and can avoid deformation of the lens mounting hole in the lens barrel during the process of the bracket being fixedly connected to the optical lens to the greatest extent, thereby improving the deformation phenomenon of the peripheral edge of the lens caused by the local installation of the driving mechanism, thereby reducing the unstable range of field curvature fluctuation and MTF value of the optical lens, and improving the imaging performance of the optical lens.

[0063] Based on this, the present application provides a lens assembly, which includes: a shell, which is provided with a accommodating cavity inside, and the shell includes a base that defines at least a part of the accommodating cavity; an optical lens, which is constrained inside the accommodating cavity in a manner that it can move along its optical axis, and the optical lens includes a lens barrel and a lens assembled in the lens barrel, wherein the outer peripheral surface of the lens barrel is provided with a boss, and the boss has a first surface and a second surface opposite to each other along the optical axis direction, the first surface is adjacent to the light incident end of the optical lens, and the second surface is adjacent to the light emitting end of the optical lens; a bracket, including a mounting portion and a first bearing portion, the mounting portion is fixed to the first surface of the boss through a connecting structure, the first bearing portion is located on the side of the boss and has a gap with the side wall of the boss; a driving mechanism is arranged between the base and the first bearing portion of the bracket to drive the bracket and the optical lens to move along the optical axis.

[0064] In addition, with the development of electronic products, the requirements for miniaturization and thinness of camera modules are getting higher and higher. Taking the camera module of mobile phones as an example, as mobile phones are becoming thinner and lighter, the main requirement for camera modules is thickness. In addition, for the front camera module, as the screen-to-body ratio of mobile phones increases, the lens of the front camera module needs to be as close to the edge of the mobile phone screen as possible. Since the existing front camera module is usually set in the top center or upper left corner of the mobile phone screen, this limits the spacing parameter range between the lens and one side edge of the camera module or between the adjacent two side edges, that is, it is required to design an extremely narrow edge on the camera module.

[0065] Based on this, the present application also provides a camera module using the aforementioned lens assembly, wherein the base has a light window for allowing light from the optical lens to pass through the accommodating cavity, and a color filter is provided at the light window; the base is provided with a photosensitive component located outside the accommodating cavity, and the optical lens is located on the photosensitive path of the photosensitive component.

[0066] It is worth noting that the conventional camera module also includes a lens holder, and the color filter is usually installed on the lens holder, and the setting of the lens holder will make the camera module thicker. Therefore, the camera module in the present application eliminates the lens holder and installs the color filter on the base, which can not only reduce the assembly process, but more importantly, can reduce the thickness of the camera module, making the camera module thinner.

[0067] In addition, the present application also provides a camera module using the above-mentioned lens assembly, wherein the base is provided with a photosensitive assembly located outside the accommodating cavity, and the optical lens is located on the light sensitive path of the photosensitive assembly; the base is provided with an annular shoulder, the center hole of the shoulder constitutes the light window, and the shoulder has a first side portion and a second side portion opposite to each other, the first side portion is adjacent to the first bearing portion of the bracket, and the second side portion is away from the first bearing portion of the bracket, and the width of the first side portion is greater than the width of the second side portion.

[0068] Due to the existence of the first bearing part of the bracket, the camera module is wider at the side where the first bearing part of the bracket is located. The present application arranges the first side portion of the annular shoulder to be adjacent to the first bearing portion of the bracket, and the second side portion is designed to be away from the first bearing portion of the bracket, and the width of the first side portion is greater than the width of the second side portion, so that the first side portion of the shoulder can accommodate the photosensitive chip and / or electronic components (such as capacitors, resistors) and / or conductive parts (such as gold wires electrically connecting the chip and the second circuit board) in the photosensitive component, thereby making full use of the space of the camera module on the side where the first bearing portion of the bracket is located, and allowing the second side portion of the shoulder to occupy a smaller space of the camera module, that is, electronic components (such as capacitors, resistors) and / or conductive parts (such as gold wires electrically connecting the chip and the second circuit board) are not placed on the second side portion of the shoulder, thereby allowing the portion of the camera module corresponding to the second side portion to be designed as an extremely narrow edge, thereby further reducing the size of the camera module in the direction perpendicular to the optical axis, so that the camera module can more easily meet the size requirements of being a front camera of an electronic device such as a mobile phone or a tablet, and thus making the camera module more suitable for being used as a front camera module of an electronic device such as a mobile phone or a tablet.

[0069] In addition, the present application also provides an electronic device with the aforementioned camera module, including a body, the body being equipped with the aforementioned camera module for acquiring images. The type of the body of the electronic device is not limited, for example, the body of the electronic device can be any electronic device that can be configured with the camera module, such as a smart phone, a tablet computer, a laptop computer, an e-book, a personal digital assistant, a camera, etc. Moreover, when the body of the electronic device is a smart phone or a tablet computer, the camera module can be used as a front camera module and / or a rear camera module.

[0070] Illustrative Implementation

[0071] Example 1

[0072] like Figures 1 to 7 As shown, it is the first preferred embodiment of the present invention. For the convenience of description, the width direction of the camera module is defined as the X-axis. The length direction of the camera module is the Y-axis. The thickness direction of the camera module (i.e., the extension direction of the optical axis) is the Z-axis. It can be understood that the coordinate system setting of the camera module can be flexibly set according to specific actual needs.

[0073] like Figures 1 to 3 As shown, the camera module in this embodiment includes a lens assembly 100 and a photosensitive assembly 9. The lens assembly 100 is located on the photosensitive path of the photosensitive assembly 9, so that the external light first passes through the lens assembly 100 and is then received by the photosensitive assembly 9 to form an image.

[0074] like Figure 3 As shown, the lens assembly 100 in this embodiment includes a housing, an optical lens 2, a bracket 3 and a driving mechanism. The housing is provided with a housing cavity 10, and the housing includes a base 1 defining a partial housing cavity 10. The optical lens 2 is capable of moving along its optical axis (i.e., Figure 1 The optical lens 2 is constrained to move in the accommodating cavity 10 in the Z-axis direction (as shown in the figure), and the optical lens 2 includes a lens barrel (not shown in the figure) and a lens (not shown in the figure) assembled in the lens barrel (not shown in the figure). It can be understood that a lens mounting hole (not shown in the figure) is provided inside the lens barrel (not shown in the figure), and the lens (not shown in the figure) is mounted in the lens mounting hole (not shown in the figure). The present invention does not limit the number of lenses, and the type and arrangement of the lenses can be reasonably set according to the imaging requirements.

[0075] like Figure 3 , Figure 6 and Figure 7 As shown, the outer peripheral surface of the lens barrel (not shown in the figure) is provided with a boss 21, and the boss 21 is arranged along the optical axis direction (i.e. Figure 1The bracket 3 has a first surface 21a and a second surface 21b opposite to each other (in the Z-axis direction shown), the first surface 21a is adjacent to the light input end 2a of the optical lens 2, and the second surface 21b is adjacent to the light output end 2b of the optical lens 2. The bracket 3 includes a mounting portion 31 and a first bearing portion 32, the mounting portion 31 is fixed to the first surface 21a of the boss 21 through a connecting structure, the first bearing portion 32 is located on the side of the boss 21 and has a gap X with the side wall of the boss 21. The range of the gap X is 0.2 to 0.3 mm. The driving mechanism is arranged between the base 1 and the first bearing portion 32 of the bracket 3 to drive the bracket 3 and the optical lens 2 to move along the optical axis.

[0076] It is worth noting that in “the first bearing portion 32 is located on the side of the boss 21 and has a gap X with the side wall of the boss 21”, when the boss 21 is in a structure where its side wall includes a curved surface, “the side wall of the boss 21” refers to the corresponding area of ​​the side wall of the boss 21; and when the boss 21 is in a structure where all the sides are flat, “the side wall of the boss 21” refers to the corresponding side wall of the boss 21. In this embodiment, the side wall of the boss 21 is a flat surface, and “the side wall of the boss 21” refers to the side surface of the boss 21 in the Y-axis direction (such as Figure 3 and Figure 6 shown).

[0077] The lens assembly 100 in this embodiment is provided with a bracket 3 so that the first bearing portion 32 of the bracket 3 supports a part of the driving mechanism. Since the first bearing portion 32 of the bracket 3 is located on the side of the boss 21 and has a gap X with the side wall of the boss 21, the first bearing portion 32 of the bracket 3 can isolate the part of the driving mechanism from the outer peripheral surface of the optical lens 2, so that the installation of the part of the driving mechanism can avoid the radial compression of the lens barrel (not shown in the figure) by the installation of the part of the driving mechanism, thereby preventing the lens installation hole (not shown in the figure) in the lens barrel (not shown in the figure) from being deformed, thereby preventing the peripheral edge of the lens (not shown in the figure) from being deformed due to compression; and the mounting portion 32 of the bracket 3 is provided with a gap X between the first bearing portion 32 of the bracket 3 and the side wall of the boss 21. The mounting portion 31 of the bracket 3 is fixed to the first surface 21a of the boss 21 through the connecting structure, so that the mounting portion 31 of the bracket 3 applies force to the boss 21 of at least a local area of ​​the periphery of the lens (not shown in the figure) along the optical axis direction, and the pressure bearing direction of the lens barrel (not shown in the figure) of the optical lens 2 is changed, so that the deformation of the lens mounting hole (not shown in the figure) in the lens barrel (not shown in the figure) during the process of the bracket 3 being fixedly connected with the optical lens 2 can be avoided to the greatest extent, thereby improving the deformation phenomenon of the peripheral edge of the lens (not shown in the figure) caused by the local installation of the driving mechanism, and further reducing the unstable range of the field curvature fluctuation and the MTF value of the optical lens 2, and improving the imaging performance of the optical lens 2.

[0078] The lens barrel (not shown in the figure) of the optical lens barrel 2 in the prior art is usually made of thermoplastic resin such as polyamide, polycarbonate, etc., so that the lens barrel (not shown in the figure) is easily deformed due to stress, baking and heating after the local part of the driving mechanism is installed. The bracket 3 can be made of a material such as metal or liquid crystal polymer with better mechanical properties and heat resistance than the lens barrel (not shown in the figure), so that the support performance of the bracket 3 is better, and it is not easy to deform due to stress or heat, so that the bracket 3 can provide stronger support for the local part of the driving mechanism. The bracket 3 in this embodiment is made of metal material such as stainless steel (sus316L), while meeting the support performance and heat resistance requirements of the bracket 3, the thickness of the bracket 3 can be made thinner, thereby avoiding the stacking of the bracket 3 on the optical lens 2 to greatly affect the thickness of the camera module, so that the thickness of the camera module is still reduced compared with the traditional voice coil motor.

[0079] like Figure 3 and Figure 7 As shown, the first bearing portion 32 of the bracket 3 is located from one side edge of the mounting portion 31 toward the direction where the second surface 21b of the boss 21 is located ( Figure 1 The first bearing portion 32 can play a major supporting role when the Y-axis direction of the camera module is vertical. In a further design, the bracket 3 also includes a second bearing portion 33, which extends from the end of the first bearing portion 32 toward the direction away from the corresponding side wall of the boss 21 ( Figure 1 The second bearing portion 33 extends from the Z-axis of the camera module to the vertical direction, so that the second bearing portion 33 can play a major supporting role when the Z-axis direction of the camera module is vertical. It can be understood that there is no restriction on the angle between the mounting portion 31 and the first bearing portion 32, and the angle between the first bearing portion 32 and the second bearing portion 32, which can be a right angle, an obtuse angle or an acute angle. In this embodiment, the angle between the mounting portion 31 and the first bearing portion 32, and the angle between the first bearing portion 32 and the second bearing portion 32 are both 90°.

[0080] The processing process of the bracket 3 is: metal base material → punching → bending → waste cutting → finished product, wherein the formation of the first bearing part 32 and the second bearing part 33 are both carried out in the bending process. The bracket 3 only needs to be bent twice to form the overall structure of the bracket 3, which makes the processing of the bracket 3 easier, and the processing of the bracket 3 does not involve the bending of two parallel components, so that the optical lens 2 can be guaranteed to have a smaller tilt angle, that is, the tilt of the camera module is smaller. Because there are inevitably processing tolerances in the processing process, it is difficult for the two bent parallel components to maintain a high degree of parallelism. If the bracket 3 is connected to the boss 21 of the optical lens 2 through two components with low parallelism, it is easy to cause the optical axis of the optical lens 2 to be skewed relative to the photosensitive chip 92 of the photosensitive component 9, which leads to a larger tilt angle of the optical lens 2, that is, the tilt of the camera module is larger.

[0081] The connection structure in this embodiment includes a first rivet hole (not shown in the figure), a second rivet hole 313 and a rivet 5. The first rivet hole (not shown in the figure) is opened on the first surface 21a of the boss 21, the second rivet hole 313 is opened on the mounting portion 31 of the bracket 3, and the rivet 5 is penetrated through the first rivet hole (not shown in the figure) and the second rivet hole 313, so as to rivet the mounting portion 31 of the bracket 3 with the boss 21 of the optical lens 2 together. Considering that the design of the rivet hole is prone to dust and affects the imaging of the optical lens 2, the connection structure in this embodiment also includes glue (such as shadowless glue) filled between the first rivet hole (not shown in the figure) and the rivet 5, and between the second rivet hole 313 and the rivet 5. Since riveting is divided into cold riveting and hot riveting, cold riveting refers to riveting performed by the rivet 5 at room temperature. Hot riveting denatures the connection parts of the two metals and even melts them together by increasing the temperature. According to the different materials of the rivet 5, the final riveting temperature of the rivet 5 is between 450 and 600°C. In this embodiment, the boss 21 of the optical lens 2 and the mounting portion 31 of the bracket 3 are riveted together by a cold riveting process, thereby avoiding an overheated environment formed by an overheated rivet 5 during the assembly process of the optical lens 2 and the bracket 3, causing the boss 21 of the optical lens 2 to melt and deform, and thus it is not easy to cause the lens mounting hole (not marked in the figure) inside the lens barrel (not marked in the figure) to deform, thereby improving the optical performance of the optical lens 2.

[0082] like Figure 6 and Figure 7 As shown, the connection structure has at least three groups, and the three groups of connection structures are not on the same straight line. The connection structure is used as the connection point between the optical lens 2 and the bracket 3. Since the three connection points can define a plane, it is suitable for the mounting portion 31 of the bracket 3 to be installed flatly on the boss 21 of the optical lens 2. In this embodiment, the outer contour of the boss 21 is rectangular, and the connection structure has four groups, which are respectively located at the four corners of the boss 21. The specific structural design and quantity design of the connection structure can make the connection between the optical lens 2 and the bracket 3 more firm and more reliable, so that when the electronic device equipped with the camera module falls, the connection structure is not easy to fail, so that the anti-fall and anti-fall performance of the camera module is better, and the distribution design of the connection structure can make the mounting portion 31 of the bracket 3 more flat, so that the optical lens 2 is not easy to tilt relative to the photosensitive component 9, and the tilt angle of the optical lens 2 can be reduced (that is, the tilt is smaller), and the force of the optical lens 2 is more balanced.

[0083] Since the riveting process inevitably exerts a force on the boss 21 of the optical lens 2, each connection structure in this embodiment is adjacent to the side wall of the boss 21. Among them, "the connection structure is adjacent to the side wall of the boss 21" means that the distance between the connection structure and the side wall of the boss 21 is less than the distance between the connection structure and the corresponding part of the edge of the lens mounting hole (not shown in the figure) of the lens barrel (not shown in the figure). Since the distance between the connection structure and the lens mounting hole (not shown in the figure) of the lens barrel (not shown in the figure) is far, the force exerted by the rivet 5 on the boss 21 of the optical lens 2 is not easy to cause the lens mounting hole (not shown in the figure) of the lens barrel (not shown in the figure) to deform, which can reduce the influence of the riveting process on the imaging performance of the optical lens 2.

[0084] like Figure 6 As shown, since the mounting portion 31 of the bracket 3 will inevitably fit with the first surface 21a of the boss 21, the mounting portion 31 of the bracket 3 applies an extrusion to the boss 21 in the direction of the second surface 21b. In this embodiment, the mounting portion 31 of the bracket 3 is annular, which can increase the contact area between the mounting portion 31 of the bracket 3 and the first surface 21a of the boss 21, thereby reducing the pressure on the boss 21, so that the connection between the bracket 3 and the optical lens 2 is not easy to cause the lens mounting hole (not shown in the figure) of the lens barrel (not shown in the figure) to deform, thereby reducing the influence of the mounting portion 31 of the bracket 3 on the imaging performance of the optical lens 2. Since the outer contour of the boss 21 is rectangular, the mounting portion 31 of the bracket 3 is adaptively designed to be a rectangular ring. Further design, the mounting portion 31 of the bracket 3 covers 60-70% of the area of ​​the first surface 21a, so that the contact area between the bracket 3 and the boss 21 can be large enough, and the sensitivity of the movement of the optical lens 2 can be avoided from being affected by the excessive weight of the bracket 3.

[0085] like Figure 3 and Figure 5 As shown, the housing also includes a cover body 7 that is covered on the outside of the base 1, and the cover body 7 and the base 1 together form the accommodating cavity 10, and the cover body 7 is provided with a through hole 71 corresponding to the optical lens 2. It can be understood that the optical lens 2 can participate in the assembly process of the camera module 1 before the cover body 7, that is, in the embodiment of the present application, after the cover body 7 is assembled on the outside of the base 1, it is no longer necessary to install the optical lens 2 in the accommodating cavity 10 of the base 1 through the through hole 71, so the aperture of the through hole 71 of the cover body 7 can be reduced to be smaller than the size of the light emitting end 2b of the optical lens 2.

[0086] like Figure 4 , Figure 6 and Figure 7As shown, the first surface 21a of the boss 21 is provided with four first stoppers 211 protruding from the bracket 3, and each of the four side positions of the boss 21 has a first stopper 211, so that when the optical lens 2 moves upward on the Z axis, each first stopper 211 can contact the inner surface of the cover 7, thereby limiting the upward movement range of the optical lens 2 on the Z axis. Three of the first stoppers 211 are located in the center hole 311 of the mounting portion 31 of the bracket 3. The mounting portion 31 of the bracket 3 is provided with a notch 312 on the side away from the first bearing portion 32 on the Y axis, and one of the first stoppers 211 is located in the notch 312.

[0087] In this embodiment, by locating three of the first stop portions 211 in the central hole 311 of the mounting portion 31 of the bracket 3, the mounting portion 31 of the bracket 3 can be made as a whole closer to the side wall of the boss 21, so that the extrusion applied by the bracket 3 on the boss 21 is farther from the corresponding part of the edge of the lens mounting hole (not shown in the figure), thereby making the lens mounting hole (not shown in the figure) less likely to deform. The notch 312 is formed during the stamping process, which can release stress for subsequent processing steps such as bending and waste cutting, thereby avoiding deformation of the bracket 3 and reducing the overall flatness of the mounting portion 31 of the bracket 3. The mounting portion 31 of the bracket 3 has a higher overall flatness, so that the extrusion force of the bracket 3 on the boss 21 is more balanced, and the optical lens 2 is not easy to tilt, and the tilt of the camera module is smaller. The position design of the notch 312 can not only avoid the first stop portion 211 on the corresponding side, but also reduce the space occupied on the corresponding side on the Y-axis, and can allow the camera module to design the corresponding side on the Y-axis as an extremely narrow side, shorten the size of the camera module on the Y-axis, and facilitate the miniaturization of the camera module, so that the camera module is suitable as a front camera module.

[0088] like Figure 7 As shown, the base 1 is provided with four second stoppers 13 distributed at the four corners of the base 1 , so that when the optical lens 2 moves downward along the Z axis, the second stoppers 13 can limit the downward movement of the optical lens 2 along the Z axis.

[0089] like Figure 4 , Figure 6 and Figure 7As shown, the driving mechanism includes a coil 41 and a magnetic element 42 arranged opposite to each other. There are two magnetic elements 42, both of which are magnets. The magnetic element 42 is mounted on the first bearing part 32 and the second bearing part 33 of the bracket 3; specifically, the magnetic element 42 is pasted on the first bearing part 32 and the second bearing part 33 of the bracket 3. Due to the excellent pressure bearing and high temperature resistance of the bracket 3, the mounting of the magnetic element 42 on the bracket 3 is not easy to cause deformation of the bracket 3, and the magnetic element 42 can also be attracted to the bracket 3 due to magnetic attraction, so that the installation of the magnetic element 42 is more secure, thereby making the camera module more anti-fall and anti-fall performance better. A first circuit board 6 is provided on the side of the base 1, and the coil 41 is electrically connected to the first circuit board 6, so as to power the coil 41. The coil 41 is a hollow planar coil and is mounted on the first circuit board 6. The coil 41 and the magnetic element 42 are arranged opposite to each other. Thus, when the coil 41 is energized, the electromagnetic force generated by the coil 41 and the magnetic element 42 will drive the magnetic element 42 to drive the bracket 3 to move along the optical axis, thereby driving the optical lens 2 to move along the optical axis.

[0090] like Figure 4 , Figure 6 and Figure 7 As shown, a guide mechanism is provided between the first bearing portion 32 of the bracket 3 and the base 1, so as to guide the movement of the optical lens 2 along the optical axis direction. The guide mechanism has two groups, and is spaced apart in a direction substantially perpendicular to the optical axis; in this embodiment, the two groups of guide mechanisms are provided on both sides of the magnetic element 42 in the X-axis direction. Each group of guide mechanisms includes a guide portion 121 and a guide groove 101 arranged opposite to each other, and a guide member 8 clamped between the guide portion 121 and the corresponding guide groove 101. The outer contour of the base 1 is rectangular, and the base 1 is provided with a support column 12 at the position of the two corners, each support column 12 extends along the optical axis direction (i.e., the Z-axis direction), and each support column 12 is formed with a guide portion 121 on the side surface close to the optical lens 2 in the Y-axis direction, and the guide portion 121 is a U-shaped groove. The first bearing portion 32 is in the shape of a long strip arranged along the X-axis direction, and a U-shaped guide groove 101 is punched out at both ends of the first bearing portion 32. The guide member 8 is a ball, and each guide mechanism has two balls.

[0091] It is worth noting that in the traditional ball guide mechanism, the guide part and the guide groove are made of plastic, while the balls are usually ceramic. In this way, the guide part and the inner wall of the guide groove will cause chips due to friction during the rotation of the guide member 8. These chips can easily contaminate the lens and the photosensitive component 9 of the optical lens 2, thereby affecting the imaging quality of the optical lens 2 and shortening the service life of the camera module. At the same time, pits are easily formed on the inner wall of the guide part and the guide groove, resulting in an increase in the ball installation gap between the guide part and the guide groove, making it easy for at least two balls to be misaligned in the X-axis direction or the Y-axis direction. Chips can also easily enter between the balls, causing the rotation of the balls to become stuck, and then causing the movement of the optical lens 2 to become stuck. In this embodiment, by directly setting the guide groove 101 on the first bearing portion 32 of the bracket 3, the guide member 8 will not generate chips when rubbing against the inner wall of the guide groove 101, which can reduce the chips generated by the guide mechanism during use, greatly reduce the probability of the optical lens 2 and the photosensitive component 9 being contaminated by powder during the use of the camera module, so that it is not easy to affect the imaging quality of the optical lens 2, and the service life of the camera module can be extended, and the movement of the optical lens 2 is smoother. In addition, the guide groove 101 is formed by a stamping process, which is easy to process and is not easy to accumulate processing tolerances, thereby avoiding the skew of the bracket 3 caused by the processing tolerance, and making it difficult for the optical lens 2 to tilt relative to the photosensitive component 9.

[0092] The first circuit board 6 in this embodiment is a flexible printed circuit (FPC), and the first circuit board 6 is fixed to two support columns 12 by a magnetic member 61. Specifically, each support column 12 is provided with a missing corner 122 on the side surface away from the optical lens 2 along the Y-axis direction. The magnetic member 61 is adsorbed on the side surface of the first circuit board 6 away from the optical lens 2 along the Y-axis direction due to the magnetic attraction between the magnetic member 61 and the magnetic element 42, and the first circuit board 6 is also pressed by the magnetic member 61, and the two ends of the first circuit board 6 are respectively pressed against the corresponding missing corners 122, thereby achieving the fixation of the first circuit board 6 on the base 1. In this embodiment, the magnetic member 61 is a magnetic conductive material, such as stainless steel (SUS430), so as to play a certain magnetic conductive role, strengthen the magnetic field, and also make the magnetic attraction between the magnetic member 61 and the magnetic element 42 stronger.

[0093] like Figure 3 and Figure 7 As shown, the base 1 is provided with an annular shoulder 11, and the central hole of the shoulder 11 forms a light window 111, and the light window 111 allows the light of the optical lens 2 to pass through the accommodating cavity 10. The shoulder surface of the shoulder 11 is mounted with a color filter 112 located at the light window 111, so that the lens seat is eliminated and the color filter 94 is directly installed on the base 1, which can not only reduce the assembly process, but more importantly, the elimination of the lens seat can reduce the thickness of the camera module.

[0094] like Figure 3 and Figure 7 As shown, the photosensitive assembly 9 includes a second circuit board 91, a photosensitive chip 92 and electronic components 93. The second circuit board 91 is attached to the base 1 and is located outside the accommodating cavity 10, and the first circuit board 6 is provided with solder pins (not shown in the figure) electrically connected to the second circuit board 91, so that the second circuit board 91 is electrically connected to the coil 41. The photosensitive chip 92 is mounted on the second circuit board 91 and electrically connected to the second circuit board 91 (for example, the photosensitive chip 92 is electrically connected to the second circuit board 91 by gold wire), so that the second circuit board 91 provides the photosensitive chip 92 with the control circuit and electric energy required for operation. At least the photosensitive area of ​​the photosensitive chip 92 is opposite to the light window 111, so that the photosensitive chip 92 can receive light from the optical lens 2. The electronic components 93 refer to capacitors and resistors.

[0095] like Figure 3 and Figure 7 As shown, the shoulder 11 of the base 1 has a first side portion 11a and a second side portion 11b opposite to each other along the Y-axis direction, the first side portion 11a is adjacent to the first bearing portion 32 of the bracket 3, the second side portion 11b is away from the first bearing portion 32 of the bracket 3, and the width of the first side portion 11a is greater than the width of the second side portion 11b, so that the first side portion 11a of the shoulder 11 can accommodate the photosensitive chip 92 and / or electronic components 93 (such as capacitors, resistors) and / or conductive parts (such as gold wires electrically connecting the chip and the second circuit board) in the photosensitive component 9, and fully utilize the camera module at the first bearing portion 32 of the bracket 3. The space on the side of the shoulder 11 is occupied by the second side portion 11b, and the second side portion 11b of the shoulder 11 can occupy a smaller space of the camera module, that is, electronic components 93 (such as capacitors, resistors) and / or conductive parts (such as gold wires electrically connecting the chip and the second circuit board) are not placed on the second side portion 11b, thereby allowing the portion of the camera module corresponding to the second side portion 11b to be designed as an extremely narrow edge, thereby further reducing the size of the camera module in the Y-axis direction, making it easier for the camera module to meet the size requirements of a front camera of an electronic device such as a mobile phone or a tablet, and further making the camera module more suitable for use as a front camera module of an electronic device such as a mobile phone or a tablet.

[0096] The electronic device in this embodiment is a mobile phone, including a main body, on which the aforementioned camera module is installed, and the camera module serves as a front camera module, that is, the light incident end 2a of the optical lens 2 in the camera module faces the front side of the electronic device.

[0097] Example 2

[0098] like Figure 8 FIG. 2 is a diagram showing a second preferred embodiment of the present invention.

[0099] The difference between this embodiment and the embodiment 1 is that the base 1 has a recess 14 recessed toward the inside of the accommodating cavity 10, and the recess 14 is located between the side wall corresponding to the first bearing portion 32 and the first side portion 11a on the base 1, and the recess 14 of the base 1 is located below the coil 41, so that the recess 14 can also accommodate the electronic components 93. The design of the recess 14 can also reduce the size of the camera module on the Y axis, and the recess 14 can also reduce the thickness of the camera module (i.e., the size in the Z axis direction) by avoiding the position of the magnetic element 42, but because the recess 14 will occupy the installation space of the coil 41, the number of turns of the coil 41 is limited, and there is a risk of affecting the driving force of the optical lens 2 to move.

[0100] Example 3

[0101] like Fig. 9 and Fig.10 FIG. 2 is a third preferred embodiment of the present invention.

[0102] The difference between this embodiment and the first embodiment is that: the boss 21 is provided with a convex portion 212 on one side of the first bearing portion 32 of the bracket 3 on the Y axis. There are two convex portions 212, which are arranged at intervals on the side wall of the boss 21 along the X axis. Each guide groove 101 is formed on the corresponding convex portion 212. Compared with directly forming the guide groove 101 on the first bearing portion 32 of the bracket 3, since the boss 21 is injection molded, the precision of the guide groove 101 formed by the boss 21 is higher. A baffle 213 is provided in the middle of each guide groove 101, and each baffle 213 divides the corresponding guide groove 101 into two sub-grooves, and a guide member 8 is provided in each sub-groove, so that each guide member 8 rolls in the corresponding sub-groove to avoid the two balls 8 in each guide groove 101 being concentrated at one end of the guide groove 101, which causes the bracket 3 to tilt, thereby making the tilt of the optical lens 2 smaller.

[0103] like Fig.10 As shown, in this embodiment, the first bearing portion 32 of the bracket 3 has a first side and a second side opposite to each other in the X-axis direction, and the first side and the second side of the first bearing portion 32 of the bracket 3 are respectively provided with a third bearing portion 34, and the third bearing portion 34 plays a major supporting role for the magnetic element 42 when the X-axis direction of the camera module is vertical. It can be understood that, since the two third bearing portions 34 are not directly connected to the boss 21, even if the two third bearing portions 34 have a low parallelism due to unavoidable processing tolerances, it is not easy to cause the bracket 3 to tilt, that is, it is not easy to increase the tilt of the camera module.

[0104] It should be understood by those skilled in the art 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 purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A lens assembly (100), characterized in that: include: A housing having an accommodating cavity (10) disposed therein, wherein the housing comprises a base (1) defining at least a portion of the accommodating cavity (10); An optical lens (2) is constrained inside a housing cavity (10) in a manner that it can move along its optical axis, and the optical lens (2) comprises a lens barrel and a lens assembled in the lens barrel, wherein a boss (21) is provided on the outer peripheral surface of the lens barrel, and the boss (21) has a first surface (21a) and a second surface (21b) opposite to each other along the optical axis direction, the first surface (21a) is adjacent to a light input end (2a) of the optical lens (2), and the second surface (21b) is adjacent to a light output end (2b) of the optical lens (2); The bracket (3) comprises a mounting portion (31) and a first bearing portion (32), wherein the mounting portion (31) is fixed to a first surface (21a) of the boss (21) via a connecting structure, and the first bearing portion (32) is located on the side of the boss (21) and has a gap (X) with the side wall of the boss (21); The driving mechanism is arranged between the base (1) and the first bearing portion (32) of the bracket (3) to drive the bracket (3) and the optical lens (2) to move along the optical axis.

2. The lens assembly (100) according to claim 1, characterized in that: The bracket (3) is made of metal.

3. The lens assembly (100) according to claim 2, characterized in that: in, The first bearing portion (32) of the bracket (3) extends from an edge of one side of the mounting portion (31) toward the direction where the second surface (21b) of the boss (21) is located.

4. The lens assembly (100) according to claim 2, characterized in that: in, A guide mechanism is provided between the first bearing part (32) of the bracket (3) and / or the boss (21) and the side wall corresponding to the first bearing part (32) of the bracket (3) and the base (1).

5. The lens assembly (100) according to claim 4, characterized in that: in, The guide mechanism comprises a guide portion (121) and a guide groove (101) arranged opposite to each other, and a guide member (8) clamped between the guide portion (121) and the guide groove (101); the base (1) is provided with a support column (12) extending along the optical axis direction, and the guide portion (121) is arranged on the support column (12); and the guide groove (101) is arranged on the first bearing portion (32) of the bracket (3).

6. The lens assembly (100) according to claim 4, characterized in that: in, The guide mechanism comprises a guide portion (121) and a guide groove (101) which are arranged opposite to each other, and a guide member (8) clamped between the guide portion (121) and the guide groove (101); the base (1) is provided with a support column (12) extending along the optical axis direction, and the guide portion (121) is arranged on the support column (12); the guide groove (101) is arranged on a side wall of the boss (21) corresponding to the first bearing portion (32) of the bracket (3).

7. The lens assembly (100) according to claim 1, characterized in that: in, There are at least three groups of connection structures, and the three groups of connection structures are not on the same straight line, so as to allow the mounting portion (31) of the bracket (3) to be evenly mounted on the boss (21) of the optical lens (2).

8. The lens assembly (100) according to claim 1, characterized in that: in, The boss (21) of the optical lens (2) and the mounting portion (31) of the bracket (3) are riveted together by a cold riveting process.

9. The lens assembly (100) according to claim 1, characterized in that: in, The connecting structure is adjacent to the side wall of the boss (21).

10. The lens assembly (100) according to claim 1, characterized in that: The mounting portion (31) of the bracket (3) is annular and has a central hole (311), and the first surface (21a) of the boss (21) is provided with at least one first stop portion (211), wherein the at least one first stop portion (211) is located in the central hole (311) of the mounting portion (31) of the bracket (3) and protrudes from the bracket (3).

11. The lens assembly (100) according to claim 10, characterized in that: The mounting portion (31) of the bracket (3) is provided with a notch (312) on a side facing away from the first bearing portion (32), wherein a first stop portion (211) is located in the notch (312).

12. The lens assembly (100) according to claim 1, characterized in that: in, The mounting portion (31) of the bracket (3) covers 60-70% of the area of ​​the first surface (21a).

13. The lens assembly (100) according to any one of claims 1 to 12, characterized in that: in, The base (1) has a light window (111) for light from the optical lens (2) to pass through the accommodating cavity (10), and a color filter (112) is provided at the light window (111).

14. The lens assembly (100) according to claim 13, characterized in that: The driving mechanism comprises a coil (41) and a magnetic element (42) arranged opposite to each other, the magnetic element (42) being mounted on a first bearing portion (32) of a bracket (3), a first circuit board (6) being provided on a side of the base (1), and the coil (41) being electrically connected to the first circuit board (6).

15. A camera module, characterized in that: A lens assembly (100) as claimed in any one of claims 1 to 14 is used, wherein the base (1) is provided with a photosensitive component (9) located outside the accommodating cavity (10), and the optical lens (2) is located on the photosensitive path of the photosensitive component (9).

16. A camera module, characterized in that: A lens assembly (100) as claimed in claim 13 or 14 is used, wherein the base (1) is provided with a photosensitive component (9) located outside the accommodating cavity (10), and the optical lens (2) is located on the photosensitive path of the photosensitive component (9); The base (1) is provided with an annular shoulder (11), the central hole of the shoulder (11) constitutes the light window (111), and the shoulder (11) has a first side portion (11a) and a second side portion (11b) opposite to each other, the first side portion (11a) is adjacent to the first bearing portion (32) of the bracket (3), and the second side portion (11b) is far away from the first bearing portion (32) of the bracket (3), and the width of the first side portion (11a) is greater than the width of the second side portion (11b).

17. A camera module, characterized in that: The lens assembly (100) as claimed in claim 14 is applied, wherein the base (1) is provided with a photosensitive component (9) located outside the accommodating cavity (10), and the optical lens (2) is located on the photosensitive path of the photosensitive component (9); The base (1) is provided with an annular shoulder (11), the central hole of the shoulder (11) constitutes the light window (111), and the shoulder (11) has a first side portion (11a) and a second side portion (11b) opposite to each other, the first side portion (11a) being adjacent to the first bearing portion (32) of the bracket (3), and the second side portion (11b) being away from the first bearing portion (32) of the bracket (3), and the width of the first side portion (11a) being greater than the width of the second side portion (11b); The base (1) has a recess (14) recessed toward the interior of the accommodating cavity (10), the recess (14) being located between a side wall on the base (1) corresponding to the first bearing portion (32) and the first side portion (11a), and the recess (14) being located below the coil (41).

18. An electronic device, characterized in that It comprises a main body, on which the camera module as claimed in claim 15, 16 or 17 is installed.

Images