CN113890974A

CN113890974A - Camera module, assembling method thereof and electronic equipment

Info

Publication number: CN113890974A
Application number: CN202111121615.6A
Authority: CN
Inventors: 吴军; 朱童林; 李巍
Original assignee: Jiangxi Jinghao Optical Co Ltd
Current assignee: Jiangxi Jinghao Optical Co Ltd
Priority date: 2021-09-24
Filing date: 2021-09-24
Publication date: 2022-01-04

Abstract

The invention relates to the technical field of lenses, and discloses a camera module, an assembling method thereof and electronic equipment. Adopt the module of making a video recording of this embodiment, the overall length of the module of making a video recording is less, and the structure is simpler.

Description

Camera module, assembling method thereof and electronic equipment

Technical Field

The invention relates to the technical field of lenses, in particular to a camera module, an assembling method thereof and electronic equipment.

Background

In the related art, in order to improve the focusing capability of the camera module, an adjustable lens (T-lens) is added in the camera module, and the adjustable lens is deformed by powering on, thereby implementing the focusing function.

However, electronic devices (mobile phones, tablet computers, etc.) are becoming thinner and lighter, and the space reserved for the camera module is becoming smaller and smaller. In contrast, in order to add an adjustable lens in the related art, the TTL (Total Track Length) of the camera module is large, and the structure is complicated.

Disclosure of Invention

The embodiment of the invention discloses a camera module, an assembling method thereof and electronic equipment.

In a first aspect, an embodiment of the present invention discloses a camera module, which includes a substrate, a photosensitive element, a first lens group, a second lens group, an adjustable lens and a flexible circuit board, wherein the photosensitive element is disposed on the substrate, the first lens group includes a first lens barrel and a first lens group mounted in the first lens barrel, the first lens barrel is disposed on the substrate, an image side end of the first lens barrel faces the photosensitive element, the second lens group includes a second lens barrel and a second lens group mounted in the second lens barrel, the second lens barrel is disposed at an object side end of the first lens barrel, an end face of an image side end of the second lens barrel is provided with a first receiving groove, the adjustable lens is disposed in the first receiving groove, and the flexible circuit board is electrically connected to the adjustable lens and the substrate.

The adjustable lens is arranged through the first accommodating groove of the second lens cone, and the second lens cone is arranged at the object side end of the first lens cone, so that the adjustable lens is positioned between the first lens group and the second lens group, and the adjustable lens is arranged in the camera module. And, utilize first holding tank to set up the space that adjustable lens can reduce adjustable lens and occupy for this module of making a video recording's overall length is less, and the structure of the module of making a video recording is simpler.

As an optional implementation manner, in an embodiment of the present invention, a peripheral side surface of the tunable lens abuts against a side wall of the first receiving groove.

In this embodiment, the peripheral side surface of the adjustable lens abuts against the side wall of the first accommodating groove, so that the assembly precision of the adjustable lens and the second lens barrel can be improved, and the situation that the relative positions of the first lens group, the adjustable lens and the second lens group are changed due to the relative displacement of the adjustable lens relative to the second lens barrel, and further the optical performance of the camera module is affected can be avoided.

As an optional implementation manner, in an embodiment of the present invention, the end surface of the image side end of the second lens barrel is further provided with a plurality of dispensing grooves communicated with the first accommodating groove, the plurality of dispensing grooves are disposed along the peripheral side of the first accommodating groove, and each dispensing groove is filled with an adhesive medium so as to adhere and fix the adjustable lens to the first accommodating groove.

This embodiment fills bonding medium through some glue grooves so that adjustable lens bonds and is fixed in first holding tank, and a plurality of glue grooves can make adjustable lens and first holding tank have a plurality of bonding positions, and encircle and distribute in a week of adjustable lens, can improve the reliability that adjustable lens and first holding tank bonded.

As an optional implementation manner, in an embodiment of the present invention, the end surface of the image side end of the second lens barrel is further provided with a plurality of glue overflow grooves, each glue overflow groove is disposed corresponding to each glue dispensing groove, each glue overflow groove is communicated with each corresponding glue dispensing groove to form a step groove, and each glue overflow groove is used for accommodating the bonding medium overflowing from each corresponding glue dispensing groove.

This embodiment is through setting up excessive gluey groove, and when the bonding medium in some gluey grooves spills over, this excessive gluey groove can hold bonding medium to avoid bonding medium to spill over to the terminal surface of the image side end of second lens cone and influence the condition emergence of the performance of the module of making a video recording.

As an optional implementation manner, in an embodiment of the present invention, one end of the flexible circuit board electrically connected to the adjustable lens is disposed on an end surface of an image-side end of the second lens barrel, and a first avoiding groove is disposed corresponding to the step groove.

This embodiment can avoid the condition that flexible circuit board sheltered from the glue dispensing groove and lead to unable glue dispensing groove filling medium to take place through setting up first keep away the position groove, ensures to make a video recording the module and can assemble. Moreover, the bonding medium in the glue overflow groove can be prevented from contacting the flexible circuit board, so that the condition that the flexible circuit board fails due to the bonding medium is avoided, and the yield of the camera module is improved.

As an optional implementation manner, in an embodiment of the present invention, the first accommodating groove is a square groove matched with an external shape of the adjustable lens, four corners of the first accommodating groove are respectively provided with a second avoiding groove, and the four second avoiding grooves are used for avoiding four corners of the adjustable lens.

The angle of adjustable camera lens is dodged through the second clearance groove to this embodiment, and when can avoiding adjustable camera lens equipment to first holding tank, four angles of adjustable camera lens and four angles of first holding tank bump and lead to the impaired condition of adjustable camera lens to take place, improve the equipment yield of the module of making a video recording, reduce the equipment processing procedure degree of difficulty of the module of making a video recording.

As an optional implementation manner, in an embodiment of the present invention, the flexible circuit board includes a first section and a second section connected to the first section, the first section is at least partially disposed on an end surface of an image-side end of the second barrel, the first section is electrically connected to the adjustable lens, the second section extends from the first section to the substrate and is located on a peripheral side of the first barrel, and the second section is electrically connected to the substrate.

In the embodiment, the first section is electrically connected to the adjustable lens, the second section extends from the first section to the substrate and is electrically connected to the substrate, so that the electrical connection between the adjustable lens and the substrate can be shortened as much as possible, and the electrical connection wiring design is simpler.

As an optional implementation manner, in an embodiment of the invention, a second accommodating groove communicated with the first accommodating groove is further disposed on an end surface of the image side end of the second lens barrel, the second accommodating groove penetrates through a peripheral side surface of the image side end of the second lens barrel, and the first segment is at least partially connected to the second accommodating groove.

This embodiment sets up the part of first section through this second holding tank, can avoid first section to locate the terminal surface of the like side end of this second lens cone and occupation space, and the great condition of the overall length that leads to the module of making a video recording takes place, is favorable to the miniaturized design of the module of making a video recording.

As an optional implementation manner, in an embodiment of the present invention, a third receiving groove is disposed on an end surface of the object-side end of the first lens barrel, corresponding to the second receiving groove, a part of the first segment is located in the first receiving groove, and the rest of the first segment is located in the third receiving groove.

This embodiment holds first section through second holding tank and third holding tank jointly, can reduce the space that first section occupy, and the overall length of the module of making a video recording is less, is favorable to the miniaturized design of the module of making a video recording. Moreover, the depth of the second accommodating groove and the third accommodating groove is small, the influence of the second accommodating groove on the strength of the first lens cone can be reduced, the influence of the third accommodating groove on the strength of the second lens cone is reduced, and the overall strength of the camera module is high.

As an optional implementation manner, in an embodiment of the present invention, the first section is provided with a positioning groove, an end surface of the image-side end of the second lens barrel is provided with a positioning protrusion, and the positioning protrusion abuts against at least a part of a groove wall of the positioning groove.

The positioning lug is connected with the positioning groove in a matched mode, the assembling precision of the flexible circuit board and the second lens barrel can be improved, and the situation that the first section is in relative displacement with the second lens barrel and the electric connection of the first section and the adjustable lens is invalid can be avoided.

As an optional implementation manner, in an embodiment of the invention, an inclined surface is disposed on a peripheral side of an object-side end of the first barrel, the inclined surface is connected to an end surface of the object-side end of the first barrel and a peripheral side surface of an image-side end of the first barrel, the second section includes a first extending portion and a second extending portion connected to the first extending portion, the first extending portion is connected to the first section, the first extending portion extends from the first section to the base plate, the first extending portion abuts against the inclined surface, the second extending portion extends from the first extending portion to the base plate, and the second extending portion at least partially abuts against a peripheral side surface of the image-side end of the first barrel.

In the embodiment, the first extension portion abuts against the inclined surface, and the second extension portion abuts against the peripheral side surface of the image side end of the first lens barrel, so that the second section can be tightly attached to the peripheral side surface of the first lens barrel when extending from the first section to the substrate, the space occupied by the second section is reduced, the risk that the second section is damaged due to external impact can be reduced, and the reliability of the flexible circuit for conducting the adjustable lens and the substrate is improved.

As an optional implementation manner, in an embodiment of the present invention, a first through groove is disposed on a circumferential side surface of an image side end of the first barrel, the first through groove penetrates through a surface facing an image side and a surface facing an object side of the image side end of the first barrel, and the second section is at least partially located in the first through groove.

This embodiment holds at least part of second section through first logical groove, can reduce the space that the second section occupy to reduce this module of making a video recording's whole volume, and can protect flexible circuit board.

As an optional implementation manner, in an embodiment of the present invention, the image capturing module further includes a base and an optical filter, the base is disposed on the substrate, the base is provided with a light hole, the light hole is used for allowing light to irradiate the photosensitive element, the first lens barrel is disposed on a side of the base away from the substrate and is disposed corresponding to the light hole, and the optical filter covers the light hole.

This embodiment sets up logical unthreaded hole through the base to supply light to penetrate to this photosensitive element, and utilize the closing cap to filter the miscellaneous light in the light filter that leads to the unthreaded hole, improve the accuracy of photosensitive element received the light, thereby improve the imaging quality of the module of making a video recording.

As an alternative implementation manner, in an embodiment of the present invention, a second through groove is formed on the peripheral side surface of the chassis, the second through groove penetrates through a surface of the chassis facing the image side and a surface of the chassis facing the object side, and the second segment is at least partially located in the second through groove.

This embodiment holds at least part of second section through the second logical groove, can reduce the space that the second section occupy to reduce this module of making a video recording's whole volume, and can protect the electric part.

In a second aspect, an embodiment of the present invention discloses an electronic device, which includes a device main body and the camera module of the first aspect, where the camera module is disposed in the device main body. It can be understood that the electronic device of the second aspect has the beneficial effects of the camera module of the first aspect.

In a third aspect, an embodiment of the present invention discloses an assembly method of a camera module, which is applied to the camera module of the first aspect, and the assembly method includes:

mounting the photosensitive element onto the substrate;

fixing the flexible circuit board to the second lens barrel;

mounting the adjustable lens to the first accommodating groove and electrically connecting the adjustable lens and the flexible circuit board;

conducting the flexible circuit board and the substrate in alignment equipment, and actively aligning the adjustable lens, the first mirror group, the second mirror group and the photosensitive element;

the first mirror group and the second mirror group, and the first mirror group and the substrate are fixedly bonded;

and bending and positioning the flexible circuit board and welding the flexible circuit board and the substrate for electric connection.

By implementing the assembling method, the second lens cone and the flexible circuit board can be positioned and assembled at the same time, and the assembling process difficulty of the camera module is reduced. Moreover, the camera module assembled by the assembly method of the second aspect has the beneficial effects of the first aspect.

Compared with the prior art, the embodiment of the invention at least has the following beneficial effects:

the embodiment of the invention provides a camera module, an assembling method thereof and electronic equipment, wherein a photosensitive element is arranged on a substrate, a first lens barrel is arranged on the substrate, a first lens group is arranged in the first lens barrel, a second lens barrel is arranged on the object side end of the first lens barrel, a second lens group is arranged in the second lens barrel, and an adjustable lens is arranged in a first accommodating groove of the second lens barrel, so that the adjustable lens is positioned between the first lens group and the second lens group, and the adjustable lens is arranged in the camera module. Meanwhile, the adjustable lens and the substrate are electrically connected through the flexible circuit board, so that the substrate can be electrified to the adjustable lens to deform the adjustable lens, the focal length of the adjustable lens is adjusted, and the focusing of the camera module is realized. That is to say, when the camera module sets up the adjustable lens and improves the focusing ability of camera module, utilize first holding tank to set up the adjustable lens, can reduce the space that the adjustable lens occupy, this camera module's overall length is less to, utilize the second lens cone that camera module itself has to set up the adjustable lens, need not to additionally increase support or other structures that bear the weight of the adjustable lens for setting up the adjustable lens, the structure of camera module is comparatively simple.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for a person skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a camera module according to an embodiment of the present invention;

fig. 2 is a schematic view of an internal structure of a camera module according to an embodiment of the present invention;

fig. 3 is an exploded schematic view of a camera module according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a second mirror group and a flexible circuit board according to an embodiment of the disclosure;

FIG. 5 is a schematic structural diagram of a base according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of an electronic device according to a second embodiment of the present invention;

fig. 7 is a schematic flow chart illustrating an assembling method of a camera module according to a third embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "center", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the invention and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

Furthermore, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific nature and configuration may be the same or different), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.

The invention discloses a camera module, an assembling method thereof and electronic equipment.

Example one

Referring to fig. 1 to fig. 4, a schematic structural diagram of a camera module 100 according to an embodiment of the invention is shown, the camera module 100 includes a substrate 10, a photosensitive element 11, a first mirror group 12, a second mirror group 13, an adjustable lens 14 and a flexible circuit board 15, the photosensitive element 11 is disposed on the substrate 10, the first lens group 12 includes a first barrel 121 and a first lens group 122 mounted on the first barrel 121, the first barrel 121 is disposed on the substrate 10, an image side of the first barrel 121 faces the photosensitive element 11, the second lens group 13 includes a second barrel 131 and a second lens group 132 mounted on the second barrel 131, the second barrel 131 is disposed at the object side end of the first barrel 121, a first accommodating groove 131a is disposed at the end surface of the image side end of the second barrel 131, the tunable lens 14 is disposed in the first receiving cavity 131a, and the flexible circuit board 15 is electrically connected to the tunable lens 14 and the substrate 10.

The image side is a side facing the light receiving element 11, and the object side is a side facing the imaging object of the image capturing module 100.

In the embodiment, the first lens barrel 121 is disposed on the substrate 10, the second lens barrel 131 is disposed on the object side end of the first lens barrel 121, and the end surface of the image side end of the second lens barrel 131 is provided with the first receiving groove 131a for disposing the adjustable lens 14, so that the adjustable lens 14 is located between the first lens group 12 and the second lens group 13, thereby realizing the center placement of the adjustable lens 14 in the camera module 100. It is understood that, compared to the related art, the present embodiment has many advantages by using the design with the adjustable lens 14 in the front of the camera module 100 (the adjustable lens is the lens group closest to the object side in the camera module). In one aspect, the lens group closest to the object side in the camera module 100 is the second lens group 13, and in this case, the second lens group 13 can adopt a lens with a small head to reduce the overall size of the camera module 100, and in particular, the camera module 100 can be used for a front camera of an electronic device. On the other hand, considering that the surface of the adjustable lens 14 is a thin film, the surface is likely to be damaged, so that the adjustable lens 14 can be protected by the adjustable lens 14 located between the first lens group 12 and the second lens group 13, the adjustable lens 14 is prevented from being damaged or contaminated by foreign objects (dust, sewage, etc.), and a better dustproof effect is achieved. In addition, the adjustable lens 14 adopts a mid-set design, when the camera module 100 is assembled, the adjustable lens 14, the first lens group 12 and the second lens group 13 can be respectively adjusted in position and then fixed, the adjustment processes are not mutually uniform, the assembly tolerance can be reduced, and the assembly precision of the camera module 100 is improved.

Meanwhile, the flexible circuit board 15 is electrically connected to the adjustable lens 14 and the substrate 10, so that the substrate 10 can energize the adjustable lens 14 to deform the adjustable lens 14, and adjust the focal length of the adjustable lens 14, thereby realizing the focusing of the camera module 100.

It can be known that, the adjustable lens 14 in the middle of the camera module 100 of this embodiment is arranged, so that the focusing capability of the camera module 100 is improved, and meanwhile, the adjustable lens 14 can be arranged by using the second lens barrel 131 of the camera module 100 itself, and it is not necessary to additionally add a bracket or other structures for arranging the adjustable lens 14, so that the structure of the camera module 100 is simpler, and the second lens barrel 131 adopts the first accommodating groove 131a to arrange the adjustable lens 14, so that the space occupied by the adjustable lens 14 can be reduced, and the total length of the camera module 100 is smaller.

During assembly, the adjustable lens 14 can be disposed in the first receiving groove 131a, so that the adjustable lens 14 and the second lens group 13 are integrated into a whole, and the whole is Actively Aligned (AA) with the first lens group 12, the substrate 10 and the photosensitive element 11, so that the assembly process of the camera module 100 is simple.

In some embodiments, the peripheral side surface of the tunable lens abuts against the sidewall of the first receiving groove 131 a. It can be understood that, on the one hand, when the tunable lens 14 is assembled with the second barrel 131, the peripheral side surface of the tunable lens 14 can abut against the sidewall of the first receiving groove 131a, so as to position the tunable lens 14, thereby improving the assembly precision and reducing the difficulty of the assembly process. On the other hand, after the adjustable lens 14 and the second barrel 131 are assembled, the peripheral side surface of the adjustable lens 14 abuts against the side wall of the first accommodating groove 131a, and the side wall of the first accommodating groove 131a can limit the adjustable lens 14, so as to prevent the relative position of the adjustable lens 14 relative to the first accommodating groove 131a (i.e., the second barrel 131) from being changed, which may cause the change of the relative position of the first lens group 12, the adjustable lens 14, and the second lens group 13, and further affect the optical performance of the camera module 100.

Optionally, the first receiving groove 131a has an outer shape and a size adapted to the adjustable lens 14. For example, the tunable lens 14 of the present embodiment is square, and the first accommodating groove 131a is a square groove matching with the shape and size of the tunable lens 14. In some other embodiments, the tunable lens 14 may have a circular shape, and the first receiving groove 131a may be a circular groove, which is not limited in this embodiment.

In some embodiments, the surface of the tunable lens facing the image side may be adhered to the bottom surface of the first receiving cavity 131a, so as to fix the tunable lens 14 in the first receiving cavity 131 a.

Optionally, the end surface of the image side end of the second barrel 131 is further provided with a plurality of dispensing slots 131b communicated with the first accommodating slot 131a, the dispensing slots 131b are disposed along the periphery of the first accommodating slot 131a, and the dispensing slots 131b are filled with an adhesive medium to adhere and fix the adjustable lens 14 to the first accommodating slot 131 a. It is understood that, on the one hand, if the tunable lens 14 and the first receiving groove 131a have no other bonding position, the tunable lens 14 can be fixed to the first receiving groove 131a through the bonding medium of the plurality of glue grooves 131b, and if the tunable lens 14 and the first receiving groove 131a have other bonding position (for example, the surface of the tunable lens facing the object side can be bonded to the bottom surface of the first receiving groove 131 a), the reliability of the tunable lens 14 fixed to the first receiving groove 131a can be improved through the bonding medium of the plurality of glue grooves 131 b. On the other hand, the plurality of glue dispensing grooves 131b are disposed along the periphery of the first receiving groove 131a, so that the tunable lens 14 and the first receiving groove 131a have a plurality of bonding positions and are circumferentially distributed around the tunable lens 14, which can improve the reliability of bonding between the tunable lens 14 and the first receiving groove 131a, and when the bonding medium is varied (expands with heat and contracts with cold), the acting force of the bonding medium of each glue dispensing groove 131b on the tunable lens 14 can be mutually counteracted, thereby reducing the risk that the optical performance of the camera module 100 is reduced due to the relative position change of the tunable lens 14 with respect to the first receiving groove 131a caused by the acting force generated when the bonding medium is varied.

Further, the end face of the image side end of the second barrel 131 is further provided with a plurality of glue overflow slots 131c, each glue overflow slot 131c is disposed corresponding to each glue dispensing slot 131b, each glue overflow slot 131c is communicated with each glue dispensing slot 131b to form a step slot, and each glue overflow slot 131c is used for accommodating the bonding medium overflowing from the glue dispensing slot 131 b. It can be understood that, by providing the glue overflow slot 131c, when the bonding medium in the glue dispensing slot 131b overflows, the glue overflow slot 131c can accommodate the bonding medium, so as to avoid the situation that the performance of the camera module 100 is affected by the overflow of the bonding medium to the end surface of the image side end of the second barrel 131.

In some embodiments, one end of the flexible circuit board 15 electrically connected to the adjustable lens 14 is disposed on an end surface of the image side end of the second lens barrel 131, and a first avoiding groove 15a is disposed corresponding to the step groove. It can be understood that, in an aspect, when the camera module 100 is assembled, one end of the flexible circuit board 15 electrically connected to the adjustable lens 14 can be bonded to the end surface of the image side end of the second lens barrel 131, and then the adjustable lens 14 is mounted in the first receiving groove 131a, by using the first avoiding groove 15a, the situation that the flexible circuit board 15 blocks the dispensing groove 131b to prevent the dispensing groove 131b from being filled with the medium when the dispensing groove 131b is filled with the bonding medium to fixedly mount the adjustable lens 14 in the first receiving groove 131a can be avoided, thereby ensuring that the camera module 100 can be assembled. On the other hand, when the bonding medium in the dispensing slot 131b overflows to the glue overflow slot 131c, the first avoiding slot 15a can avoid the bonding medium in the glue overflow slot 131c from contacting the flexible circuit board 15, so as to avoid the occurrence of failure of the flexible circuit board 15 caused by the bonding medium, and improve the yield of the camera module 100.

Optionally, the first receiving groove 131a is a square groove matching with the shape of the adjustable lens 14, and four corners of the first receiving groove 131a are respectively provided with a second avoiding groove (not shown), and the four second avoiding grooves are used for avoiding four corners of the adjustable lens 14. It can be understood that, the second avoiding groove avoids the corner of the adjustable lens 14, so that when the adjustable lens 14 is assembled to the first accommodating groove 131a, the condition that the adjustable lens 14 is damaged due to the collision between the four corners of the adjustable lens 14 and the four corners of the first accommodating groove 131a can be avoided, the assembly yield of the camera module 100 is improved, and the assembly process difficulty of the camera module 100 is reduced.

In this embodiment, the flexible circuit board 15 includes a first section 151 and a second section 152 connected to the first section 151, the first section 151 is at least partially disposed on an end surface of an image side end of the second barrel 131, the first section 151 is electrically connected to the adjustable lens 14, the second section 152 extends from the first section 151 to the substrate 10 and is located on a peripheral side of the first barrel 121, and the second section 152 is electrically connected to the substrate 10. It can be understood that, by electrically connecting the first segment 151 to the tunable lens 14 and the second segment 152 extending from the first segment 151 to the substrate 10 and electrically connecting to the substrate 10, the electrical connection traces between the tunable lens 14 and the substrate 10 can be shortened as much as possible, and the electrical connection traces are relatively simple in design.

Further, the end surface of the image side end of the second barrel 131 is further provided with a second receiving groove 131d communicating with the first receiving groove 131a, the second receiving groove 131d penetrates through the peripheral side surface of the image side end of the second barrel 131, and the first segment 151 is at least partially connected to the second receiving groove 131 d. It can be understood that, the second receiving groove 131d is used to arrange the first segment 151, so that the first segment 151 is lower than or flush with the end surface of the object side end of the first barrel 121, that is, the first segment 151 does not protrude out of the second receiving groove 131d, and therefore, the situation that the first segment 151 occupies a space due to the end surface of the image side end of the second barrel 131 is avoided, which results in a larger overall length of the camera module 100, and is beneficial to the miniaturization design of the camera module 100.

Optionally, a third receiving groove 121a is disposed on an end surface of the object side end of the first barrel 121 corresponding to the second receiving groove 131d, a portion of the first segment 151 is located in the first receiving groove 131a, and the rest of the first segment 151 is located in the third receiving groove 121 a. It can be understood that, on the one hand, the second receiving groove 131d receives a portion of the first segment 151, and the third receiving groove 121a receives the rest portion of the first segment 151, so as to avoid the situation that the first segment 151 occupies a space between the end surface of the object side end of the first barrel 121 and the end surface of the image side end of the second barrel 131, which results in a larger overall length of the camera module 100, and is beneficial to the miniaturization design of the camera module 100. On the other hand, when the second receiving groove 131d and the third receiving groove 121a are used to receive the first segment 151 together, compared with a mode of receiving the whole first segment 151 through one receiving groove, the depth of the second receiving groove 131d and the third receiving groove 121a is smaller, so that the influence of the second receiving groove 131d on the strength of the first barrel 121 can be reduced, the influence of the third receiving groove 121a on the strength of the second barrel 131 can be reduced, and the overall strength of the camera module 100 is higher.

In some embodiments, the first segment 151 has a positioning groove 151a, the end surface of the image-side end of the second barrel 131 has a positioning protrusion 133, and the positioning protrusion 133 abuts against at least a portion of a groove wall of the positioning groove 151 a. The positioning groove 151a and the first avoiding groove 15a are the same groove body disposed on the first segment 151. Specifically, the positioning protrusion 133 is disposed in the second receiving groove 131d of the second barrel 131. It can be understood that, on the one hand, when the first segment 151 is assembled with the second barrel 131, the positioning protrusion 133 and the positioning groove 151a are cooperatively connected, so that the position of the first segment 151 in the second accommodating groove 131d can be positioned, and the assembly precision of the flexible circuit board 15 and the second barrel 131 is improved. On the other hand, after the first segment 151 and the second barrel 131 are assembled, the positioning protrusion 133 and the positioning groove 151a are used for matching connection, so that the first segment 151 can be limited, and the situation that the first segment 151 generates relative displacement relative to the second barrel 131 and the electrical connection between the first segment 151 and the adjustable lens 14 fails can be avoided.

For example, an inclined surface 121b is disposed on the peripheral side of the object-side end of the first barrel 121, the inclined surface 121b is connected to the end surface of the object-side end of the first barrel 121 and the peripheral side surface of the image-side end of the first barrel 121, the second section 152 includes a first extending portion 152a and a second extending portion 152b connected to the first extending portion 152a, the first extending portion 152a is connected to the first section 151, the first extending portion 152a extends from the first section 151 to the base plate 10, the first extending portion 152a abuts against the inclined surface 121b, the second extending portion 152b extends from the first extending portion 152a to the base plate 10, and the second extending portion 152b abuts against the peripheral side surface of the image-side end of the first barrel 121. It can be understood that, by abutting the first extension portion 152a on the inclined surface 121b and abutting the second extension portion 152b on the peripheral side surface of the image side end of the first barrel 121, the second section 152 can be tightly attached to the peripheral side surface of the first barrel 121 when extending from the first section 151 to the substrate 10, so as to reduce the space occupied by the second section 152, reduce the risk of damage to the second section 152 due to external impact, and improve the reliability of the flexible circuit for conducting the adjustable lens 14 and the substrate 10.

In this embodiment, a first through groove 121c is disposed on a peripheral side surface of an image side end of the first barrel 121, the first through groove 121c penetrates through a surface of the image side end of the first barrel 121 facing the image side and a surface of the first barrel 121 facing the object side, and the second segment 152 is at least partially located in the first through groove 121 c. It can be understood that, on the one hand, by accommodating at least part of the second section 152 through the first through slot 121c, the space occupied by the second section 152 can be reduced, thereby reducing the overall volume of the camera module 100. On the other hand, when the camera module 100 is subjected to external impact, the first through groove 121c can reduce the risk of external impact on the second section 152, thereby protecting the flexible circuit board 15.

In some embodiments, the image capturing module 100 further includes a base 16 and a filter 17, the base 16 is disposed on the substrate 10, the base 16 is provided with a light hole 16a, the light hole 16a is used for allowing light to irradiate the light sensing element 11, the first barrel 121 is disposed on a side of the base 16 away from the substrate 10 and is disposed corresponding to the light hole 16a, and the filter 17 covers the light hole 16 a. It can be understood that the light-passing hole 16a is formed in the base 16 to allow light to be emitted to the photosensitive element 11, and the optical filter 17 covering the light-passing hole 16a is used to filter stray light, so as to improve the accuracy of light received by the photosensitive element 11, thereby improving the imaging quality of the camera module 100.

Further, referring to fig. 5, a fourth receiving groove 16b communicating with the light passing hole 16a is disposed on a side of the base 16 away from the substrate 10, and the filter 17 is disposed in the fourth receiving groove 16 b. It can be understood that, by disposing the filter 17 in the fourth receiving groove 16b, the space occupied by the filter 17 can be reduced, so as to reduce the overall length of the camera module 100, and meet the miniaturization design of the electronic device, in particular, the camera module 100 can be used for a front camera of the electronic device.

Illustratively, the peripheral side surface of the chassis 16 is provided with a second through slot 16c, the second through slot 16c penetrates through the image-side surface and the object-side surface of the chassis 16, and the second segment 152 is at least partially located in the second through slot 16 c. It can be understood that, by accommodating at least a part of the second section 152 through the second through slot 16c, the space occupied by the second section 152 can be reduced, thereby reducing the overall volume of the camera module 100. On the other hand, when the camera module 100 is subjected to external impact, the second through slot 16c can reduce the risk of external impact on the second section 152, thereby protecting the electric components.

Alternatively, the substrate 10 may be any one of a hard circuit board, a rigid-flex board, or a flexible circuit board 15. It is understood that different types of the substrate 10 can be selected according to actual situations to meet different use requirements, and the embodiment is not particularly limited thereto.

The photosensitive element 11 may be a CCD (Charge-coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor) element, for example. Different types of photosensitive elements 11 can be selected according to actual situations to meet different use requirements, which is not specifically limited in this embodiment.

That is, the camera module 100 can be matched with different substrates 10 and photosensitive elements 11 according to actual needs, so as to meet different requirements.

In the camera module 100 according to the first embodiment of the present invention, the substrate 10 is provided with the photosensitive element 11, the first lens barrel 121 is disposed on the substrate 10, the first lens group 122 is installed in the first lens barrel 121, the second lens barrel 131 is disposed on the object side end of the first lens barrel 121, the second lens group 132 is installed in the second lens barrel 131, and the adjustable lens 14 is disposed in the first accommodating groove 131a of the second lens barrel 131, so that the adjustable lens 14 is located between the first lens group 12 and the second lens group 13, and the adjustable lens 14 is disposed in the camera module 100. Meanwhile, the flexible circuit board 15 electrically connects the adjustable lens 14 and the substrate 10, so that the substrate 10 can energize the adjustable lens 14 to deform the adjustable lens 14, and adjust the focal length of the adjustable lens 14, thereby realizing focusing of the camera module 100. That is to say, when the camera module 100 is provided with the adjustable lens 14 to improve the focusing capability of the camera module 100, the first accommodating groove 131a is used for accommodating the adjustable lens 14, so that the space occupied by the adjustable lens 14 can be reduced, the total length of the camera module 100 is small, and the second lens barrel 131 of the camera module 100 is used for accommodating the adjustable lens 14, so that no additional bracket or other structures for accommodating the adjustable lens 14 are required to be added for accommodating the adjustable lens 14, and the structure of the camera module 100 is simple.

Example two

Referring to fig. 6, a schematic diagram of a structure of an electronic apparatus 200 according to a second embodiment of the present invention is shown, in which the electronic apparatus 200 includes an apparatus main body 20 and a camera module 100 according to a first embodiment, and the camera module 100 is disposed on the apparatus main body 20.

The electronic device 200 of the present embodiment may be a mobile phone, a tablet computer, a camera, a monitoring probe, or the like. The camera module 100 can be fixed or movably disposed on the device body 20, and when the electronic device 200 is a mobile phone or a tablet, the camera module 100 can be a front camera module or a rear camera module of the mobile phone or the tablet.

The second embodiment of the present invention provides an electronic device 200, in which the overall length of the camera module 100 is small and the structure is simple.

EXAMPLE III

Please refer to fig. 7, which is a flowchart illustrating an assembly method of a camera module according to a third embodiment of the present invention, where the assembly method is applied to the camera module according to the first embodiment, and the specific structure of the camera module can refer to the first embodiment and is not described again. The assembling method comprises the following steps:

301. the photosensitive element is mounted on the substrate.

It is understood that, by performing step 301, the photosensitive element is fixed on the substrate, and the photosensitive element is electrically connected to the substrate.

302. Fixing the flexible circuit board to the second lens barrel;

it can be understood that, by implementing step 302, the flexible circuit board and the second lens barrel are formed into a whole, and the assembly position of the flexible circuit board in the camera module is directly determined by the second lens barrel, that is, the flexible circuit board can be assembled synchronously when the second lens barrel is assembled, thereby reducing the difficulty of the process of the camera module.

It should be noted that the assembly method is applied to the camera module according to the first embodiment, and as can be seen from the first embodiment, the first section of the flexible circuit board is connected to the second receiving groove and is positioned by the positioning bump and the positioning groove. That is, the step 302 may specifically be: the positioning groove of the first section of the flexible circuit board is matched and connected with the positioning lug of the second accommodating groove, and the first section of the flexible circuit board is fixedly connected with the second accommodating groove in a bonding mode.

303. And the adjustable lens is arranged to the first accommodating groove and is electrically connected with the flexible circuit board.

It should be noted that, the assembling method is applied to the camera module according to the first embodiment, and as can be seen from the first embodiment, the adjustable lens is connected to the first receiving groove in an adhesion manner, and then the step 302 may specifically be: the surface of the adjustable lens facing the image side can be bonded to the bottom surface of the first accommodating groove, bonding media are added to each glue dispensing groove so as to further bond and fix the adjustable lens to the first accommodating groove, Ultraviolet Curing (UV) is carried out, the adjustable lens is electrically connected with the flexible circuit board in a gold wire bonding mode, and then baking is carried out.

304. And conducting the flexible circuit board and the substrate in the alignment equipment, and actively aligning the adjustable lens, the first mirror group, the second mirror group and the photosensitive element.

It can be understood that the flexible circuit board and the substrate are conducted in the alignment device, and the circuit of the alignment device is conducted, so that the situation that when the flexible circuit board and the substrate are conducted, the relative position of the second lens barrel and the substrate is fixed to influence the active alignment is avoided, and the focus of the adjustable lens can be controlled through the substrate when the active alignment is conducted subsequently, so that the normal active alignment is ensured. After the active alignment is completed, the conduction between the flexible circuit board and the substrate can be released.

And when the assembly of the second lens group is completed, the flexible circuit board and the second lens cone form a whole, so that the positioning assembly of the metal circuit layer in the camera module can be completed simultaneously, and the difficulty of the manufacturing process of the camera module is reduced.

305. And the first mirror group, the second mirror group, the first mirror group and the substrate are fixedly bonded.

It is understood that after the step 305 is performed, the positions of the components of the camera module are fixed and the mechanical assembly of the components can be completed.

When the first mirror group and the second mirror group are fixed by bonding, the bonding may be performed twice. The end face of the object side end of the first lens cone is bonded with the surface of the second lens cone facing the image side, a gap for air escape is reserved at the position of the end face, and after curing, glue is further supplemented to seal the gap. It can be understood that, when bonding for the first time, can bond first mirror group and second mirror group fixedly, and the breach that leaves can be used to escape gas when the solidification, and after the solidification, bonding for the second time can seal this breach and prevent that foreign matter (water or dust) from entering into the camera module.

306. And bending and positioning the flexible circuit board and welding the flexible circuit board and the substrate for electric connection.

It can be understood that, after step 306 is performed, the substrate and the adjustable lens are conducted through the flexible circuit board, and at this time, the electrical assembly between the components of the camera module is completed.

It should be noted that, the assembling method is applied to the camera module according to the first embodiment, and as can be seen from the first embodiment, the second section of the flexible circuit board includes a first extending portion and a second extending portion, the first extending portion abuts against the inclined surface of the first barrel, and the second extending portion abuts against the peripheral surface of the image side end of the first barrel. That is, the step 306 may specifically be: and bending the flexible circuit board to enable the first extension part of the second section of the flexible circuit board to abut against the inclined surface of the first lens barrel, and the second extension part to abut against the peripheral side surface of the image side end of the first lens barrel, so that the second section of the flexible circuit board is positioned, and the second section and the substrate are welded to be electrically connected.

The third embodiment of the invention provides an assembly method of a camera module, and by implementing the assembly method, the first lens cone and the metal circuit layer can be positioned and assembled at the same time, so that the assembly process difficulty of the camera module is reduced.

The above detailed description is made on the camera module, the assembling method thereof, and the electronic device disclosed in the embodiments of the present invention, and an example is applied herein to explain the principle and the implementation of the present invention, and the description of the above embodiments is only used to help understanding the camera module, the assembling method thereof, the electronic device, and the core idea thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

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

a substrate;

the photosensitive element is arranged on the substrate;

the first lens group comprises a first lens barrel and a first lens group arranged in the first lens barrel, the first lens barrel is arranged on the substrate, and the image side end of the first lens barrel faces the photosensitive element;

the second lens group comprises a second lens barrel and a second lens group arranged in the second lens barrel, the second lens barrel is arranged at the object side end of the first lens barrel, and a first accommodating groove is formed in the end face of the image side end of the second lens barrel;

the adjustable lens is arranged in the first accommodating groove; and

the flexible circuit board is electrically connected with the adjustable lens and the substrate.

2. The camera module of claim 1, wherein a peripheral side surface of the adjustable lens abuts against a side wall of the first receiving groove.

3. The image capturing module of claim 1, wherein a plurality of dispensing grooves are formed in an end surface of the image side end of the second barrel, the dispensing grooves are communicated with the first receiving groove, the dispensing grooves are formed along a peripheral side of the first receiving groove, and each dispensing groove is filled with a glue medium to adhesively fix the adjustable lens to the first receiving groove.

4. The image pickup module according to claim 3, wherein a plurality of glue overflow grooves are further disposed on an end surface of the image side end of the second barrel, each glue overflow groove is disposed corresponding to each glue dispensing groove, each glue overflow groove is communicated with each corresponding glue dispensing groove to form a step groove, and each glue overflow groove is configured to accommodate the bonding medium overflowing from each corresponding glue dispensing groove.

5. The camera module according to claim 4, wherein an end of the flexible printed circuit electrically connected to the adjustable lens is disposed on an end surface of the image side end of the second barrel, and a first avoiding groove is disposed corresponding to the step groove.

6. The camera module according to any one of claims 1 to 5, wherein the first receiving groove is a square groove matching with the shape of the adjustable lens, four corners of the first receiving groove are respectively provided with a second avoiding groove, and four second avoiding grooves are used for avoiding four corners of the adjustable lens.

7. The camera module according to any one of claims 1 to 5, wherein the flexible circuit board includes a first section and a second section connected to the first section, the first section is at least partially connected to an end surface of an image side end of the second barrel, the first section is electrically connected to the adjustable lens, the second section extends from the first section to the substrate and is located on a peripheral side of the first barrel, and the second section is electrically connected to the substrate.

8. The image capturing module of claim 7, wherein a second receiving groove is formed in an end surface of the image side end of the second barrel, the second receiving groove communicating with the first receiving groove, the second receiving groove penetrates through a peripheral side surface of the image side end of the second barrel, and the first segment is at least partially connected to the second receiving groove.

9. The camera module according to claim 8, wherein a third receiving groove is formed in an end surface of the object-side end of the first barrel corresponding to the second receiving groove, a portion of the first segment is located in the first receiving groove, and the rest of the first segment is located in the third receiving groove.

10. The camera module of claim 7, wherein the first section has a positioning groove, and the end surface of the image-side end of the second barrel has a positioning protrusion, and the positioning protrusion abuts against at least a portion of a groove wall of the positioning groove.

11. The camera module according to claim 7, wherein an inclined surface is disposed on a peripheral side of the object-side end of the first barrel, the inclined surface is connected to an end surface of the object-side end of the first barrel and a peripheral side surface of the image-side end of the first barrel, the second section includes a first extending portion and a second extending portion connected to the first extending portion, the first extending portion is connected to the first section, the first extending portion extends from the first section to the base plate, the first extending portion abuts against the inclined surface, the second extending portion extends from the first extending portion to the base plate, and the second extending portion at least partially abuts against a peripheral side surface of the image-side end of the first barrel.

12. The image capturing module of claim 7, wherein a first through groove is disposed on a peripheral side surface of an image side end of the first barrel, the first through groove penetrates through a surface of the image side end of the first barrel facing the image side and a surface of the first barrel facing the object side, and the second section is at least partially located in the first through groove.

13. The camera module according to claim 7, further comprising a base and a filter, wherein the base is disposed on the substrate, the base is provided with a light hole for emitting light to the photosensitive element, the first barrel is disposed on a side of the base away from the substrate and is disposed corresponding to the light hole, and the filter covers the light hole.

14. The camera module of claim 13, wherein the peripheral side surface of the base is provided with a second through slot, the second through slot extending through the image side surface and the object side surface of the base, and the second segment is at least partially located in the second through slot.

15. An electronic apparatus comprising an apparatus main body and the camera module according to any one of claims 1 to 14, the camera module being provided to the apparatus main body.

16. A method of assembling a camera module, which is applied to the camera module according to any one of claims 1 to 14, the method comprising:

mounting the photosensitive element onto the substrate;

fixing the flexible circuit board to the second lens barrel;