CN115379077A

CN115379077A - Camera module and assembling method thereof

Info

Publication number: CN115379077A
Application number: CN202110558360.3A
Authority: CN
Inventors: 洪超; 赵波杰; 梅哲文; 俞杰; 方银丽; 方杰; 蒋伟杰
Original assignee: Ningbo Sunny Opotech Co Ltd
Current assignee: Ningbo Sunny Opotech Co Ltd
Priority date: 2021-05-21
Filing date: 2021-05-21
Publication date: 2022-11-22

Abstract

The assembling method of the camera module is characterized in that the assembling process of a photosensitive assembly and a motor is completed in a module assembling factory in a unified mode, so that the structural configuration of the camera module is optimized, and the assembling efficiency of the camera module can be improved. Specifically, the camera module assembling method enables the motor to be split in a modularization mode and participates in a unified assembling scheme of the camera module, so that the interior of the motor can be conveniently cleaned, and the structure of the motor can be optimized and adjusted.

Description

Camera module and assembling method thereof

Technical Field

The application relates to the field of camera modules, in particular to a camera module and an assembling method thereof, which are used for uniformly completing the assembling process of a photosensitive assembly and a motor in a module assembling factory so as to optimize the structural configuration of the camera module and improve the assembling efficiency of the camera module.

Background

With the popularization of mobile electronic devices, technologies related to camera modules applied to mobile electronic devices for assisting users in acquiring images (e.g., videos or images) have been rapidly developed and advanced.

The camera module comprises a photosensitive assembly, a motor, an optical lens and other important components, wherein the motor is a driving element of the camera module and is used for driving an optical component in the camera module to move so as to achieve the purposes of optical focusing, optical anti-shake performance and the like. For example, in an image pickup module having an autofocus function, a motor is configured to drive an optical lens to move along an optical axis to perform autofocus.

In the current industrial layout, the assembly process of the camera module is completed at the module factory, and the motor is provided in the form of a module by the motor factory. That is, the motor is assembled and has a modular structure before it participates in the assembly process of the camera module, so that the motor participates in the assembly process of the camera module as a complete whole. However, such an assembly solution has a number of drawbacks.

First, with the development of mobile electronic devices, the camera module is increasingly developed toward large pixels, large apertures, light weight, and thin profile, which has increasingly high requirements on the size and structure of the camera module. However, since the motor exists in the form of a complete module in the camera module, which is an almost unchangeable variable in the size and structural design of the camera module, there are few module factories attempting to optimize the structural and dimensional design of the camera module from the technical idea of optimizing the motor structure and the assembly process.

Secondly, the scheme of taking the motor as a whole to participate in the assembly of the camera module also can lead to the increase of the assembly process of the camera module, and then the assembly efficiency of the camera module is reduced. For example, in the assembly scheme of the current module of making a video recording, need to carry out washing, toast solidification and AA correction many times to the motor, this all will reduce the packaging efficiency of the module of making a video recording, improve assembly cost.

Therefore, an optimized assembly scheme of the camera module is needed.

Disclosure of Invention

An advantage of the present application is to provide a camera module and an assembling method thereof, which integrate the assembly of a motor into an assembly scheme of the camera module, so as to facilitate the optimization of the structure and the size design of the camera module, and improve the assembly efficiency and the efficiency of the camera module.

Another advantage of the present application is to provide a camera module and an assembling method thereof, wherein the assembling method splits a motor into a plurality of sub-modules and participates in an assembling scheme of the camera module, which is beneficial to reducing the number of the whole assembling processes of the camera module and improving the productivity and efficiency.

Other advantages and features of the present application will become apparent from the following description and may be realized by means of the instrumentalities and combinations particularly pointed out in the appended claims.

In order to realize above-mentioned at least one advantage, the application provides a module of making a video recording, and it includes:

the photosensitive assembly comprises a circuit board, a photosensitive chip electrically connected with the circuit board and a lens base arranged on the circuit board;

a motor mounted on the mirror base;

an optical lens held on a photosensitive path of the photosensitive member in such a manner as to be installed in the motor; and

the motor carrier is sleeved with an outer shell of the motor, the outer shell is provided with an opening corresponding to the optical lens, and the caliber of the opening is smaller than the outer diameter of an assembly formed by the optical lens and the motor carrier.

In the camera module according to the application, the caliber of the opening is smaller than or equal to the outer diameter of the optical lens.

In a camera module according to the present application, the motor includes: the lens driving device comprises a motor substrate, a motor carrier, a coil and a magnet, wherein the motor substrate is mounted on the lens base, the motor carrier is mounted on the motor substrate, the coil and the magnet are used for driving the motor carrier and are oppositely arranged, the motor carrier is provided with a lens mounting cavity, and the optical lens is mounted in the lens mounting cavity.

In the camera module according to the present application, the motor further includes a first elastic member that is mounted to the motor base in a suspended manner, and a lower end portion of the motor carrier is mounted to the first elastic member.

In the camera module according to the present application, the motor further includes a second elastic member mounted to an upper end portion of the motor carrier.

In the camera module according to the present application, the optical lens includes a lens barrel and at least one optical lens installed in the lens barrel, wherein an outer diameter of the lens barrel forms an outer diameter of the optical lens.

In the camera module according to the present application, the optical lens includes at least one optical lens mounted in the lens mounting cavity.

In the camera module according to the present application, the camera module further includes an adhesive disposed between the motor carrier and the lens barrel, so that a mounting height of the optical lens with respect to the motor carrier is fixed by the adhesive.

In the camera module according to the present application, the magnet is mounted on an outer peripheral wall of the motor carrier.

In the camera module according to the present application, the camera module further includes a support arm extending upward from the motor base, wherein the coil is mounted to the support arm and corresponds to the magnet.

In the camera module according to the present application, the support arm and the motor base have an integral structure.

In the camera module according to the present application, the coil is mounted on an outer peripheral wall of the motor carrier.

In the camera module according to the present application, the camera module further includes a support arm extending upward from the motor base, wherein the magnet is mounted to the support arm and corresponds to the coil.

According to another aspect of the present application, there is also provided an assembling method of a camera module, including: providing a photosensitive assembly, wherein the photosensitive assembly comprises a circuit board, a photosensitive chip electrically connected to the circuit board and a lens base arranged on the circuit board; a motor is arranged on the microscope base; mounting an optical lens within the motor; and installing an outer frame outside the motor, wherein the outer frame is provided with an opening corresponding to the optical lens, and the caliber of the opening is smaller than the outer diameter of an assembly formed by the optical lens and the motor carrier.

In the assembly method of the camera module according to the application, install the motor on the microscope base, include: mounting a motor base to an upper surface of the mirror base, wherein the motor base includes a base body and a support arm extending upward from the base body; mounting a first elastic element on the motor base such that the first elastic element is suspendedly mounted to the motor base; mounting a motor carrier on the first elastic element, wherein the motor carrier has a lens mounting cavity; the outer peripheral wall of the motor carrier and the supporting arm are respectively provided with a coil and a magnet which are oppositely arranged; and mounting a second elastic element at an upper end portion of the motor carrier such that the motor carrier is sandwiched between the first and second elastic elements.

In the method of assembling an image pickup module according to the present application, after the mounting of the optical lens in the motor carrier and before the mounting of the outer frame outside the motor carrier, the method further comprises: an adhesive is provided between the motor carrier and the optical lens so that the mounting height of the optical lens with respect to the motor carrier is fixed by the adhesive.

Further objects and advantages of the present application will become apparent from an understanding of the ensuing description and drawings.

These and other objects, features and advantages of the present application will become more fully apparent from the following detailed description, the accompanying drawings and the claims.

Drawings

The above and other objects, features and advantages of the present application will become more apparent by describing in more detail embodiments of the present application with reference to the attached drawings. The accompanying drawings are included to provide a further understanding of the embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings, like reference numbers generally indicate like parts or steps.

Fig. 1 illustrates a schematic diagram of a camera module according to an embodiment of the present application.

Fig. 2 illustrates a schematic diagram of a variant implementation of the camera module according to an embodiment of the present application.

Fig. 3 illustrates a schematic diagram of another variant implementation of the camera module according to an embodiment of the present application.

Fig. 4 illustrates a schematic diagram of yet another variant implementation of the camera module according to an embodiment of the present application.

Fig. 5 illustrates a schematic diagram of yet another variant implementation of the camera module according to an embodiment of the present application.

Fig. 6 illustrates a schematic diagram of a further variant implementation of the camera module according to an embodiment of the present application.

Fig. 7A to 7C are schematic diagrams illustrating an assembly process of the camera module according to the embodiment of the present application.

Detailed Description

Hereinafter, example embodiments according to the present application will be described in detail with reference to the accompanying drawings. It should be apparent that the described embodiments are only a few embodiments of the present application, and not all embodiments of the present application, and it should be understood that the present application is not limited to the example embodiments described herein.

Summary of the application

As mentioned above, the motor is an important component of the camera module, and is used to drive the optical components in the camera module to move for the purposes of optical focusing, optical anti-shake, and the like. In the current industrial layout, the assembly process of the camera module is completed at the module factory, and the motor is provided in the form of a module by the motor factory. That is, the motor is assembled and has a modular structure before it participates in the assembly process of the camera module, so that the motor participates in the assembly process of the camera module as a whole. However, such an assembly solution has a number of drawbacks.

First, with the development of mobile electronic devices, the camera module is increasingly developed toward large pixels, large apertures, light weight, and thin profile, which has increasingly high requirements on the size and structure of the camera module. However, since the motor exists in the form of a complete module in the camera module, which is an almost unchangeable variable in the size and structural design of the camera module, there are few module factories attempting to optimize the structural and dimensional design of the camera module from the technical idea of optimizing the motor structure and the assembly process. Secondly, the scheme of taking the motor as a whole to participate in the assembly of the camera module also leads to the increase of the assembly process of the camera module, and then reduces the assembly efficiency of the camera module. For example, in the assembly scheme of the current module of making a video recording, need to carry out washing, toast solidification and AA correction many times to the motor, this all will reduce the packaging efficiency of the module of making a video recording, improve assembly cost. Therefore, an optimized assembly scheme of the camera module is required.

In view of the above technical problems, the technical idea of the present application is that the motor is assembled and integrated in the assembly scheme of the camera module, and specifically, the motor is disassembled into a plurality of sub-modules and participates in the assembly scheme of the camera module, so that the number of the whole assembly processes of the camera module is reduced, and the productivity and the efficiency are improved.

Based on this, the application provides a module of making a video recording that is prepared by integrated form assembly process, and it includes: the photosensitive assembly comprises a circuit board, a photosensitive chip electrically connected with the circuit board and a lens base arranged on the circuit board; a motor mounted on the mirror base; an optical lens held on a photosensitive path of the photosensitive member in such a manner as to be installed in the motor; and the outer shell is sleeved on the outer shell of the electromagnetic motor, the outer shell is provided with an opening corresponding to the optical lens, and the caliber of the opening is smaller than the outer diameter of an assembly formed by the optical lens and the motor carrier.

Based on this, this application still provides the method of assembling of a camera module, and it includes: providing a photosensitive assembly, wherein the photosensitive assembly comprises a circuit board, a photosensitive chip electrically connected to the circuit board and a lens base arranged on the circuit board; a motor is arranged on the microscope base; mounting an optical lens within the motor; and installing an outer frame outside the motor, wherein the outer frame is provided with an opening corresponding to the optical lens, and the caliber of the opening is smaller than the outer diameter of an assembly formed by the optical lens and the motor carrier.

Exemplary Camera Module

As shown in fig. 1, a camera module according to an embodiment of the present application is illustrated, wherein the camera module is prepared based on an integrated assembly process (i.e., an assembly process of a motor is integrated into an assembly process of the camera module). Correspondingly, the camera module includes: the image capturing module comprises a photosensitive assembly 10, a motor 20 installed on the photosensitive assembly 10, an optical lens 30 retained on a photosensitive path of the photosensitive assembly 10 in a manner of being installed in the motor 20, and an outer casing 40 externally sleeved on the motor 20, wherein the outer casing 40 has an opening 400 corresponding to the optical lens 30 to allow external imaging light to enter the inside of the image capturing module through the opening 400.

Accordingly, as shown in fig. 1, in the embodiment of the present application, the photosensitive assembly 10 includes: the device comprises a circuit board 11, a photosensitive chip 12, a lens base 13 and a filter element 14, wherein the circuit board 11 is used as a mounting substrate of the photosensitive assembly 10. Specifically, the light sensing chip 12 is electrically connected to the circuit board 11 (for example, in an example, the light sensing chip 12 is mounted on the upper surface of the circuit board 11 and electrically connected to the circuit board 11 by a gold wire), so as to provide the control circuit and the electric energy required by the operation of the light sensing chip 12 through the circuit board 11.

The lens holder 13 is formed on the circuit board 11 for supporting other components, wherein the lens holder 13 has an optical window corresponding to at least a photosensitive region of the photosensitive chip 12. For example, in one particular example of the present application, the lens holder 13 is implemented as a separately molded plastic bracket that is attached to the surface of the circuit board 11 by an adhesive and is used to support other components. Of course, in other examples of the present application, the mirror base 13 can also be formed on the circuit board 11 in other manners, for example, the mirror base 13 is implemented as a molded mirror base 13 which is integrally formed on a predetermined position of the circuit board 11 through a molding process.

Further, in some specific examples of the present application, the filter element 14 may be mounted on the lens base 13, so that the filter element 14 is maintained on a photosensitive path of the photosensitive chip 12, so that, in a process that the external light passes through the filter element 14 to reach the photosensitive chip 12, stray light in the external light can be filtered by the filter element 14, so as to improve imaging quality. It is worth mentioning that in other examples of the present application, the filter element 14 can also be mounted on the mirror base 13 in other ways, for example, a filter element holder is first provided on the mirror base 13, and then the filter element 14 is mounted on the filter element holder, that is, in this example, the filter element 14 can be indirectly mounted on the mirror base 13 through other supports. Of course, in other examples of the present application, the filter element 14 can also be installed at other positions of the image capturing module, for example, the filter element 14 is formed in the optical lens 30 (for example, as a layer of filter film attached to a surface of a certain optical lens of the optical lens 30), and the present application is not limited thereto.

In order to increase the bottom strength of the photosensitive assembly 10, in some examples of the present application, the photosensitive assembly 10 further includes a reinforcing plate (not shown) disposed on the lower surface of the circuit board 11, for example, a steel plate may be disposed on the lower surface of the circuit board 11 to reinforce the strength of the circuit board 11 by the steel plate. Accordingly, the reinforcing plate may be configured to have a shape and a size conforming to the wiring board 11 so as to reinforce the entirety of the wiring board 11 after being stacked on the lower surface of the wiring board 11.

Further, as shown in fig. 1, in the present embodiment, the motor 20 is mounted on the upper surface of the mirror base 13. In particular, in the embodiment of the present application, the assembly process of the motor 20 is completed during the assembly process of the camera module, that is, the motor 20 is disassembled into a plurality of parts and participates in the assembly process of the camera module, so that the overall structure and size of the motor 20 and the camera module are optimized.

In a specific example of the present application, the motor 20 is implemented as an electromagnetic motor 20, which includes a motor base 21 mounted on the lens holder 13, a motor carrier 22 mounted on the motor base 21, and a coil 23 and a magnet 24 arranged oppositely for driving the motor carrier 22, wherein the motor carrier 22 has a lens mounting cavity 220, and the optical lens 30 is mounted in the lens mounting cavity 220. That is, in this example, the motor 20 is implemented as an electromagnetic motor 20 that includes a plurality of components (including, but not limited to, a motor base 21, a motor carrier 22, a coil 23, a magnet 24, and the like) and is respectively assembled above the mirror base 13 to form the electromagnetic motor 20.

More specifically, as shown in fig. 1, in this specific example, the motor 20 further includes a first elastic member 25 that is suspendedly mounted to the motor base 21, and a lower end portion of the motor carrier 22 is mounted to the first elastic member 25. Accordingly, the motor base 21 has a mounting table protrudingly formed on an upper surface thereof, wherein a first end of the first elastic member 25 is attached to the mounting table (for example, attached to the mounting table by an adhesive or soldered to the mounting table), and a second end of the first elastic member 25 opposite to the first end extends forward from the mounting table to protrude from the mounting table and is disposed in suspension, in such a manner that the first elastic member 25 is mounted to the motor base 21 in a suspended manner.

In one implementation of this embodiment, since the first elastic element 25 needs to be conducted so that the electric energy is transmitted to the coil 23 through the first elastic element 25, the first elastic element 25 is usually fixed to the mounting base by hot riveting, which is a kind of riveting. It should be understood that when the lower end portion of the motor carrier 22 is mounted to the second end of the first elastic element 25, the motor carrier 22 is suspended to the first elastic element 25, so that the motor carrier 22 is limited and supported by the first elastic element 25.

As shown in fig. 1, in this specific example, the motor 20 further includes a second elastic element 26 mounted at an upper end portion of the motor carrier 22, so that the motor carrier 22 is sandwiched between the first elastic element 25 and the second elastic element 26 to limit and support the motor carrier 22 up and down by the first elastic element 25 and the second elastic element 26.

As shown in fig. 1, in this specific example, the magnets 24 are mounted on the outer peripheral wall of the motor carrier 22, and for example, in the example illustrated in fig. 1, the motor carrier 22 includes a mounting groove concavely formed on the outer peripheral wall thereof, and the magnets 24 are fitted in the mounting groove in an embedded manner. Further, the motor 20 further includes a support arm 212 extending upward from the motor base 21, wherein the coil 23 is mounted to the support arm 212 and corresponds to the magnet 24. Of course, in other examples of the present application, the mounting positions of the coil 23 and the magnet 24 may be interchanged with each other, that is, the coil 23 is mounted on the motor carrier 22, and the magnet 24 is mounted on the support arm 212, which is not limited to this application. In particular, in this example, the support arm 212 is also interposed between the first elastic element 25 and the second elastic element 26 to provide a mounting location for mounting the coil 23.

Further, as shown in fig. 1, in the embodiment of the present application, the optical lens 30 includes a lens barrel 31 and at least one optical lens 32 installed in the lens barrel 31, wherein the lens barrel 31 of the optical lens 30 is screwed into the lens installation cavity 220. That is, in one example, the lens barrel 31 has an external thread formed on an outer surface thereof, and the lens mounting cavity 220 has an internal thread formed therein, so that the optical lens 30 is mounted in the lens mounting cavity 220 by mutual engagement between the external thread and the internal thread. It will be understood by those skilled in the art that the resolution of the optical lens 30 is proportional to the number of the optical lenses 32, i.e. the higher the resolution, the more the number of the optical lenses 32. Therefore, preferably, in the embodiment of the present application, the optical lens 30 includes a plurality of optical lenses 32, for example, 4, 5, or 6 optical lenses 32.

It should be noted that, in the embodiment of the present application, the type of the optical lens 30 is not limited in the present application, and the optical lens may be implemented as an integral optical lens, or may be implemented as a split optical lens 30. Specifically, when the optical lens 30 is implemented as an integrated optical lens 30, the lens barrel 31 has an integrated structure, and a plurality of pieces of the optical lens 32 are assembled in the lens barrel 31. When the optical lens 30 is implemented as a split lens, the lens barrel 31 includes at least two barrel units, and a plurality of optical lenses 32 are respectively assembled in the at least two barrel units to form a plurality of lens units, and the lens units are assembled together by active alignment to form the optical lens 30.

In order to protect the motor 20 and prevent external dust and stray light from entering the camera module, the camera module further includes an outer housing 40 that is sleeved on the motor 20, and the outer housing 40 has an opening 400 corresponding to the optical lens 30. It should be understood by those skilled in the art that in the present embodiment, the outer housing 40 is equivalent to the motor outer housing of the existing motor, and compared to the existing motor with a modular structure, in the present embodiment, the outer housing 40 is used as a separate component to participate in the assembly process of the camera module.

In particular, in the embodiment of the present application, the aperture of the opening 400 of the outer housing 40 is smaller than the outer diameter of the assembly formed by the optical lens 30 and the motor carrier 22. It can be understood that, in the embodiment of the present application, the optical lens 30 is involved in the assembly process of the camera module before the outer housing 40, that is, in the embodiment of the present application, after the outer housing 40 is assembled outside the motor 20, the optical lens 30 does not need to be installed in the lens installation cavity 220 of the motor carrier 22 through the opening 400, and therefore, the aperture of the opening 400 of the outer housing 40 can be reduced. It should be understood that after the aperture of the opening 400 is reduced, it is beneficial to prevent external dust and dirt from entering the inside of the camera module. Preferably, in the embodiment of the present application, the aperture of the opening 400 is smaller than or equal to the outer diameter of the optical lens 30.

In addition to the functions of dust prevention and light entrance, the outer case 40 can prevent magnetic leakage from interfering with an external magnetic field. That is, the outer case 40 can also function as a magnetic shield.

In summary, the camera module according to the embodiment of the present application is illustrated, wherein the camera module is manufactured by a special assembly process, and specifically, the assembly scheme of the camera module integrates the assembly of the motor 20 into the assembly process of the camera module, so as to reduce the number of the overall assembly processes of the camera module and improve the productivity and efficiency.

Fig. 2 illustrates a schematic diagram of a variant implementation of the camera module according to an embodiment of the present application. In this modified embodiment, the structure of the motor base 21 is adjusted as compared with the example illustrated in fig. 1.

Specifically, as shown in fig. 2, in this modified embodiment, the support arm 212 has an integral structure with the motor base 21, that is, in this modified embodiment, the motor base 21 includes a base main body 211 and the support arm 211 integrally and upwardly extending from the base main body 211. It should be understood that, in this modified embodiment, the magnet 24 is mounted to the motor carrier 22, the motor carrier 22 is mounted to the first elastic member 25, and the first elastic member 25 is mounted to the motor base 21, and therefore, the mounting reference surface of the magnet 24 can be set as the motor base 21; the coil 23 is mounted on the support arm 212, and the support arm 212 integrally extends upward from the motor base 21, so that the mounting reference surface of the coil 23 can be set as the motor base 21.

Accordingly, when the motor base 21 and the support arm 212 have an integrated structure, the relative positional accuracy between the coil 23 and the magnet 24 can be ensured well during the mounting process to improve the centering accuracy between the coil 23 and the magnet 24. Further, the coil 23 or the magnet 24 may be fixed to the support arm 212 in advance, so that when the integrated structure formed by the motor base 21 and the support arm 212 is attached to the mirror base 13, the coil 23 or the magnet 24 attached to the support arm 212 is mechanically positioned to improve the relative positional accuracy between the coil 23 and the magnet 24.

Fig. 3 illustrates a schematic diagram of another variant implementation of the camera module according to an embodiment of the present application. As shown in fig. 3, in this modified embodiment, the structure of the motor base 21 is also adjusted. Specifically, the support arm 212 has an integral structure with the motor base 21, that is, the support arm 212 integrally extends upward from the motor base 21.

In addition to this, the motor 20 also eliminates the second elastic element 26, i.e. in this variant the motor 20 does not have the second elastic element 26 arranged at the upper end of the motor carrier 22. Also, in this embodiment, the camera module further includes an adhesive disposed between the motor carrier 22 and the lens barrel 31, so that the installation height of the optical lens 30 with respect to the motor carrier 22 is fixed by the adhesive. That is, the relative positional relationship accuracy between the optical lens 30 and the motor carrier 22 is ensured by an adhesive.

Fig. 4 illustrates a schematic diagram of yet another variant implementation of the camera module according to an embodiment of the present application. As shown in fig. 4, in this variant embodiment, the optical lens 30 is not provided with a lens barrel 31, and at least one optical lens 32 of the optical lens 30 is directly mounted in the lens mounting cavity 220 of the motor carrier 22, that is, in this variant embodiment, the motor carrier 22 forms a carrying structure for mounting the at least one optical lens 32.

It is worth mentioning that by such a structural configuration, the relative positional relationship between the optical lens 30 and the motor carrier 22 can be directly ensured without the need of positioning and positioning by the adhesive or the second elastic member 26. Accordingly, as shown in fig. 4, in this embodiment, the motor 20 eliminates the second elastic member 26 and does not have the adhesive.

Fig. 5 illustrates a schematic diagram of a further variant implementation of the camera module according to an embodiment of the present application. As shown in fig. 5, in this modified embodiment, the support arm 212 is not provided in the motor 20, and the magnet 24 is selectively mounted directly on the motor base 21. Specifically, in one example, the motor base 21 has a mounting groove concavely formed in a surface thereof, wherein the magnet 24 is fitted in the mounting groove and extends upward from the motor base 21 to correspond to the coil 23 mounted to the motor carrier 22.

Fig. 6 illustrates a schematic diagram of a further variant implementation of the camera module according to an embodiment of the present application. In this variant embodiment, as shown in fig. 6, the type of motor 20 is adapted, being implemented as a ball-type electromagnetic motor 20. Accordingly, the ball-type electromagnetic motor 20 guides and limits the motor carrier 22 by means of a ball and groove mechanism, so that in this variant embodiment, the motor 20 can eliminate the first elastic element 25 and the second elastic element 26 and introduce a ball and groove mechanism. The reason why the first elastic element 25 and the second elastic element 26 can be eliminated is: on the one hand, the first elastic element 25 and the second elastic element 26 tend to counteract a part of the electromagnetic driving force as a resistance force, i.e., the electromagnetic driving force is not large; on the other hand, since the ball and groove mechanism enables good conformity of the optical axis between the motor carrier 22 and the motor base 21, the first elastic member 25 and the second elastic member 26 are not required to be centered, and the restoring force can be provided by relying on the gravity of the motor carrier 22 and the optical lens 30 themselves.

Specifically, in this modified embodiment, the motor carrier 22 has a raceway formed therethrough and balls provided in the raceway to guide and restrain the motor carrier 22 by the balls and the raceway mechanism.

Assembling method of exemplary camera module

Fig. 7A to 7C are schematic diagrams illustrating an assembly process of the camera module according to an embodiment of the present application. Here, the assembly process illustrated in fig. 7A to 7C exemplifies the assembly of the image pickup module illustrated in fig. 2.

Specifically, the assembly process of the camera module comprises: firstly, a photosensitive assembly 10 is provided, wherein the photosensitive assembly 10 includes a circuit board 11, a photosensitive chip 12 electrically connected to the circuit board 11, and a lens holder 13 disposed on the circuit board 11. Specifically, a circuit board 11 may be provided first, and electronic components (e.g., capacitors, inductors, etc.) may be mounted on the circuit board 11 by SMT (Surface-mount Technology); then, the photosensitive chip 12 is mounted in the middle area of the circuit board 11 and the photosensitive chip 12 is electrically connected to the circuit board 11 by means of gold wire bonding; further, the lens holder 13 is attached to the wiring board 11 by an adhesive.

Next, the motor 20 is attached to the mirror base 13. In particular, in the present embodiment, the motor 20 is disassembled into a plurality of components and participates in the assembly process of the camera module. Specifically, the process of mounting the motor 20 on the mirror base 13 includes: first, a motor base 21 is mounted on an upper surface of the mirror base 13, wherein the motor base 21 includes a base main body and a support arm 212 extending upward from the base main body; then, a first elastic member 25 is mounted on the motor base 21 such that the first elastic member 25 is suspendedly mounted to the motor base 21; then, a support arm 212 is mounted on the first elastic member 25 and a motor carrier 22 is mounted on the first elastic member 25, wherein the motor carrier 22 has a lens mounting cavity 220; next, the coil 23 and the magnet 24, which are oppositely provided, are respectively mounted on the outer peripheral wall of the motor carrier 22 and the support arm 212; finally, a second elastic member 26 is mounted on an upper end portion of the motor carrier 22 such that the motor carrier 22 is bridged between the first elastic member 25 and the second elastic member 26. Preferably, in this embodiment, when the second elastic member 26 is assembled, the upper surface of the support arm 212 is flush with the upper end surface of the motor carrier 22, so that the second elastic member 26 can be smoothly mounted on the upper end surface of the motor carrier 22 and the upper surface of the support arm 212.

Next, the optical lens 30 is mounted in the motor 20. That is, the optical lens 30 is screwed into the lens mounting cavity 220 of the motor carrier 22. It should be noted that, in the embodiment of the present application, the step of mounting the optical lens 30 in the motor 20 may be performed before mounting the second elastic element 26, that is, in the embodiment of the present application, the optical lens 30 may be mounted in the lens mounting cavity 220 of the motor carrier 22 first, and further, the second elastic element 26 may be mounted at the upper end of the motor carrier 22, so that the assembly formed by the motor carrier 22 and the optical lens 30 is mounted between the first elastic element 25 and the second elastic element 26.

It will be appreciated by those skilled in the art that in the conventional camera module assembly, the motor 20 as a whole is involved in the camera module assembly process, which is not favorable for ensuring the cleanness inside the motor 20 on one hand, and the optical lens 30 can only be installed in the motor 20 from the top down on the other hand, so that in the conventional motor 20, the aperture of the opening 400 of the housing of the motor 20 is larger than the outer diameter of the motor carrier 22.

However, an outer frame is installed outside the motor 20, wherein the outer housing 40 has an opening 400 corresponding to the optical lens 30, and the aperture of the opening 400 is smaller than the outer diameter of the assembly formed by the optical lens 30 and the motor carrier 22. As described above, in the conventional camera module assembly scheme, the motor 20 as a whole is involved in the camera module assembly process, and therefore, in order to allow the optical lens 30 to be installed in the motor 20 in a top-down manner, the aperture of the opening 400 of the housing of the motor 20 is larger than the outer diameter of the motor carrier 22. In the embodiment of the present application, the aperture of the opening 400 of the outer casing 40 is smaller than the outer diameter of the assembly formed by the optical lens 30 and the motor carrier 22, and further, the aperture of the opening 400 may be smaller than or equal to the outer diameter of the optical lens 30.

In summary, the method for assembling the camera module according to the embodiment of the present application is clarified, and the assembly of the motor 20 is integrated into the assembly scheme of the camera module, so as to facilitate the optimization of the structure and the size design of the camera module, and improve the assembly efficiency and the efficiency of the camera module. In addition, the assembly method divides the motor 20 into a plurality of sub-modules and participates in the assembly scheme of the camera module, so that the number of the whole assembly processes of the camera module is reduced, and the productivity and the efficiency are improved.

It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are given by way of example only and are not limiting of the invention. The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the embodiments, and any variations or modifications may be made to the embodiments of the present invention without departing from the principles described.

Claims

1. The utility model provides a module of making a video recording which characterized in that includes:

a motor mounted on the mirror base;

an optical lens held on a photosensitive path of the photosensitive member in such a manner as to be mounted in the motor; and

the outer cover is arranged on the outer shell of the motor, the outer shell is provided with an opening corresponding to the optical lens, and the caliber of the opening is smaller than the outer diameter of an assembly formed by the optical lens and the motor carrier.

2. The camera module of claim 1, wherein a caliber of the opening is equal to or less than an outer diameter of the optical lens.

3. The camera module of claim 2, wherein the motor comprises: the lens driving device comprises a motor base installed on the lens base, a motor carrier installed on the motor base, and a coil and a magnet which are used for driving the motor carrier and are oppositely arranged, wherein the motor carrier is provided with a lens installation cavity, and an optical lens is installed in the lens installation cavity.

4. The camera module of claim 3, wherein the motor further comprises a first resilient member that is mounted in a suspended manner to the motor base, and a lower end portion of the motor carrier is mounted to the first resilient member.

5. The camera module of claim 4, wherein the motor further comprises a second resilient element mounted to an upper end of the motor carrier.

6. The camera module of claim 3, wherein the optical lens comprises a barrel and at least one optical lens mounted within the barrel, wherein an outer diameter of the barrel forms an outer diameter of the optical lens.

7. The camera module of claim 3, wherein the optical lens comprises at least one optical lens mounted within the lens mounting cavity.

8. The camera module of claim 6, further comprising an adhesive disposed between the motor carrier and the lens barrel, such that a mounting height of the optical lens with respect to the motor carrier is fixed by the adhesive.

9. The camera module according to claim 5, wherein the magnet is attached to an outer peripheral wall of the motor carrier.

10. The camera module of claim 9, further comprising a support arm extending upward from the motor base, wherein the coil is mounted to the support arm and corresponds to the magnet.

11. The camera module of claim 10, wherein the support arm and the motor base have a unitary construction.

12. The camera module of claim 9, wherein the coil is mounted on an outer peripheral wall of the motor carrier.

13. The camera module of claim 12, further comprising a support arm extending upwardly from the motor base, wherein the magnet is mounted to the support arm and corresponds to the coil.

14. The camera module of claim 12, wherein the support arm has a unitary construction with the motor base.

15. An assembling method of a camera module is characterized by comprising the following steps:

providing a photosensitive assembly, wherein the photosensitive assembly comprises a circuit board, a photosensitive chip electrically connected to the circuit board and a lens base arranged on the circuit board;

a motor is arranged on the microscope base;

mounting an optical lens within the motor; and

and installing an outer frame outside the motor, wherein the outer shell is provided with an opening corresponding to the optical lens, and the caliber of the opening is smaller than the outer diameter of an assembly formed by the optical lens and the motor carrier.

16. The method of assembling a camera module of claim 15, wherein mounting a motor on the lens mount comprises:

mounting a motor base to an upper surface of the mirror base, wherein the motor base includes a base body and a support arm extending upward from the base body;

mounting a first elastic element on the motor base such that the first elastic element is suspendedly mounted to the motor base;

mounting a motor carrier on the first resilient element, wherein the motor carrier has a lens mounting cavity;

the outer peripheral wall of the motor carrier and the supporting arm are respectively provided with a coil and a magnet which are oppositely arranged; and

a second elastic element is mounted at an upper end portion of the motor carrier such that the motor carrier is sandwiched between the first and second elastic elements.

17. The method of assembling a camera module according to claim 16, wherein after the mounting of the optical lens in the motor carrier and before the mounting of the outer frame outside the motor carrier, further comprising:

an adhesive is provided between the motor carrier and the optical lens so that the mounting height of the optical lens with respect to the motor carrier is fixed by the adhesive.