CN113568127A

CN113568127A - Camera module, assembling method thereof and electronic equipment

Info

Publication number: CN113568127A
Application number: CN202111120172.9A
Authority: CN
Inventors: 李巍; 吴军; 龚美茹
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: 2021-10-29

Abstract

The invention relates to the technical field of lenses, and discloses a camera module, an assembly method thereof and electronic equipment, wherein the camera module comprises a substrate, a photosensitive element, a first lens group, a second lens group, an adjustable lens and a metal circuit layer, the photosensitive element is arranged on the substrate, the first lens group comprises a first lens barrel and a first lens group arranged on the first lens barrel, the first lens barrel is arranged on the substrate, the image side end of the first lens barrel faces the photosensitive element, a first accommodating groove is arranged on the end surface of the object side end of the first lens barrel, 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, the adjustable lens is arranged in the first accommodating groove, the metal circuit layer is formed on the surface of the first lens barrel, and the metal circuit layer is electrically connected with the adjustable lens and the substrate. By adopting the camera module of the embodiment, the electric connection circuit of the adjustable lens is simpler, and the assembly process difficulty of the camera module is lower.

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, in the camera module of the related art, the electrical connection circuit of the adjustable lens is complicated, and the assembly process of the camera module is difficult.

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 mirror group, a second mirror group, an adjustable lens, and a metal circuit layer, the photosensitive element is arranged on the substrate, the first lens group comprises a first lens barrel and a first lens group arranged on the first lens barrel, the first lens cone is arranged on the substrate, the image side end of the first lens cone faces the photosensitive element, the end surface of the object side end of the first lens barrel is provided with a first accommodating groove, the second lens group comprises a second lens barrel and a second lens group arranged in the second lens barrel, the second lens cone is arranged at the object side end of the first lens cone, the adjustable lens is arranged in the first accommodating groove, the metal circuit layer is formed on the surface of the first lens barrel and is electrically connected to the adjustable lens and the substrate.

The first lens barrel is arranged on the substrate, the second lens barrel is arranged at the object side end of the first lens barrel, the adjustable lens is arranged by utilizing the first accommodating groove of the first lens barrel, so that the adjustable lens is arranged in the camera module, the metal circuit layer is formed on the surface of the first lens barrel and is integrated with the first lens barrel, the arrangement of the metal circuit layer in the camera module is not influenced by the internal structure of the camera module, bypassing or avoiding is not needed, and the electric connection circuit of the adjustable lens is simple. In addition, the metal circuit layer and the first lens cone form a whole, when the camera module is assembled, the metal circuit layer can be installed in place while the first lens cone is installed, the metal circuit layer does not need to be installed independently, and the assembly process difficulty of the camera module is low.

As an optional implementation manner, in an embodiment of the invention, the metal circuit layer includes a first section, an intermediate section, and a second section, which are sequentially connected, where the first section is formed on an end surface of an object-side end of the first barrel, the first section is electrically connected to the adjustable lens, the intermediate section is formed on a peripheral side surface of the first barrel and extends from the first section to the substrate, the second section is formed on a peripheral side surface of an image-side end of the first barrel, and the second section is electrically connected to the substrate.

In the embodiment, the first section is formed on the end face of the object side end of the first lens barrel, the middle section is formed by utilizing the peripheral side face of the first lens barrel and extends to the second section formed on the peripheral side face of the image side end of the first lens barrel, the metal circuit layer is formed by virtue of the structure of the first lens barrel, the electric connection circuit of the adjustable lens and the substrate can be simplified, the first section and the second section can be respectively close to the adjustable lens and the substrate as far as possible, the metal circuit layer is convenient to be electrically connected with the adjustable lens and the substrate, and the difficulty of the assembling process of the camera module is effectively reduced.

As an optional implementation manner, in an embodiment of the present invention, a second accommodating groove communicated with the first accommodating groove is further disposed on an end surface of the object-side end of the first lens barrel, an end of the first segment away from the middle segment is disposed in the second accommodating groove, and an end of the first segment away from the middle segment is electrically connected to the adjustable lens through a gold wire.

This embodiment sets up in the second holding tank through the one end of keeping away from the interlude with first section, can reduce the space that metal circuit layer occupy to, can effectively reduce the arc height of gold thread, promptly, reduce the space that the optical axis direction of module of making a video recording occupied along the gold thread, can reduce the overall length of the module of making a video recording.

As an optional implementation manner, in an embodiment of the present invention, a first electrical connection portion is disposed on a surface of the adjustable lens facing the object side, a second electrical connection portion is disposed at an end of the first segment away from the middle segment, the second electrical connection portion is electrically connected to the first electrical connection portion through a gold wire, a height difference between the first electrical connection portion and the second electrical connection portion along an optical axis direction of the camera module is h, and h is greater than or equal to 0.05mm and less than or equal to 0.2 mm.

This embodiment connects the portion through first portion and the second and follows the difference in height of the optical axis direction of the module of making a video recording, can reduce the arc height of gold thread for the space that the gold thread occupy is less, and the overall length of the module of making a video recording is less, and the radian of gold thread is great, can reduce the gold thread and receive the risk of dragging and fracture.

As an optional implementation manner, in an embodiment of the present invention, the adjustable lens is electrically connected to the first segment through a gold wire, and a position avoiding groove is disposed on a surface of the second barrel facing the first barrel, and the position avoiding groove is used for avoiding the gold wire.

The gold thread is dodged through the aversion groove to this embodiment, can provide for this gold thread and set up the space, and can avoid this gold thread and this second lens cone to take place to interfere and lead to the condition emergence that the gold thread damaged, ensures this adjustable lens and the electricity of first section to be connected.

As an alternative implementation manner, in an embodiment of the present invention, the metal circuit layer is formed on the surface of the first barrel by a laser direct structuring technique.

The mode that this embodiment passes through laser direct structuring technique forms the metal wiring layer on the surface of first lens cone, can reduce cost, and the stability on metal wiring layer is higher, and whole volume is less, can effectively reduce the whole volume of making a video recording the module, is favorable to being applied to miniaturized, frivolous electronic equipment.

As an optional implementation manner, in the embodiment of the present invention, the surface roughness of the metal circuit layer is less than or equal to 1.6 μm.

This embodiment passes through the roughness on metal line layer for the surface on metal line layer is more level and smooth, and is great with the effective area of contact of gold thread, and the gold thread is higher with the joint strength on metal line layer, can improve the electric connection reliability on metal line layer and adjustable camera lens.

As an optional implementation manner, in an embodiment of the present invention, the metal circuit layer includes a copper layer, a nickel layer, and a gold layer, which are sequentially stacked on the surface of the first barrel, and a thickness of the gold layer is greater than or equal to 0.1 μm.

The thickness of gold layer is passed through to this embodiment, can make the gold thread all combine with the gold layer, improves the gold thread and advances the joint strength on metal wiring layer to improve the electric connection reliability on metal wiring layer and adjustable camera lens.

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 optional implementation manner, in an embodiment of the invention, a through groove is formed on a peripheral side surface of the base, the through groove penetrates through a surface of the base facing an image side and a surface facing an object side, an end surface of an image side end of the first barrel is provided with an extending portion, the extending portion extends toward the substrate along the through groove, and one end of the metal circuit layer, which is electrically connected to the substrate, is formed on a surface of the extending portion.

This embodiment holds this extension through the logical groove of base, can reduce the space that this extension occupy to reduce the whole volume of this module of making a video recording, and the extension is through extending to the base plate, can make the one end that metal wiring layer and base plate electricity are connected be close to the base plate as far as possible, shorten the distance between the two, the metal wiring layer of being convenient for is connected with the base plate electricity, reduces the equipment processing procedure degree of difficulty of this module of making a video recording.

As an optional implementation manner, in an embodiment of the present invention, a peripheral side surface of the adjustable 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 first 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 first 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 object-side end of the first lens barrel is further provided with a plurality of dispensing slots communicated with the first accommodating slot, the dispensing slots are distributed around a circumference of the first accommodating slot, and each dispensing slot is filled with a first bonding medium to bond and fix the adjustable lens to the first accommodating slot.

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, a peripheral side of the second barrel is provided with a cut surface, the cut surface is arranged to be staggered from a peripheral side surface of the object-side end of the first barrel to expose a part of an end surface of the object-side end of the first barrel, a surface of the second barrel facing the first barrel is fixedly bonded to the end surface of the object-side end of the first barrel through a second bonding medium, a position of the second bonding medium corresponding to the cut surface is provided with a notch, the cut surface and the end surface of the object-side end of the first barrel are fixedly bonded through a third bonding medium, and the notch is covered by the third bonding medium.

The breach is used for escaping gas through to this embodiment, when toasting the solidification to second bonding medium, can avoid during toasting the higher gas expansion that leads to of temperature and lead to the condition emergence that the relative position of first lens cone and second lens cone changes, improves the equipment precision. And after the second bonding medium is solidified, the gap is sealed by the third bonding medium, so that the bonding strength of the first lens cone and the second lens cone is improved, and the condition that foreign matters influence the performance of the camera module from the gap is avoided.

As an optional implementation manner, in an embodiment of the present invention, a distance between the tangent plane and a peripheral side surface of the object-side end of the first barrel is d₁，d₁≥0.3mm。

In this embodiment, the distance from the tangent plane to the peripheral side surface of the object side end of the first lens barrel prevents the needle head of the glue needle from colliding with the second lens barrel to cause the second lens barrel to displace relative to the first lens barrel, and prevents the glue from overflowing from the end surface of the object side end of the first lens barrel easily and even flowing to the substrate when the glue needle is dispensing.

As an optional implementation manner, in an embodiment of the present invention, the tangent plane is an inclined plane, and the tangent plane is inclined to an end surface of the object-side end of the first barrel, or the tangent plane is a stepped plane.

The embodiment provides various different types of tangent planes, and the tangent planes can be selected according to actual conditions to meet different use requirements.

As an optional implementation manner, in the embodiment of the present invention, the width of the notch is d₂，0.5mm≤d₂Not more than 2mm, the width of the third bonding medium is d₃，1mm≤d₃≤3mm。

The width of breach is passed through to this embodiment, when avoiding the second bonding medium to toast the solidification, and it is not in time to escape to lead to the condition that the relative position of first lens cone and second lens cone changes to take place, and can improve the adhesive strength of first lens cone and second lens cone, through the width of third bonding medium, ensures that this breach is sealed up completely to the third bonding medium, and can material saving.

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;

mounting the adjustable lens to the first accommodating groove and electrically connecting the adjustable lens and the metal circuit layer;

conducting the metal circuit layer 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 welding the metal circuit layer and the substrate to be electrically connected.

By implementing the assembling method, the first lens cone and the metal circuit layer 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 assembly method thereof and electronic equipment.A photosensitive element is arranged on a substrate, a first lens group comprises a first lens barrel and a first lens group arranged on the first lens barrel, the first lens barrel is arranged on the substrate, a second lens group comprises a second lens barrel and a second lens group arranged on the second lens barrel, the second lens barrel is arranged at the object side end of the first lens barrel, and an adjustable lens is arranged by utilizing a first accommodating groove on the end surface of the object side end of the first lens barrel, namely, the adjustable lens is positioned between the first lens group and the second lens group, so that the adjustable lens is arranged in the camera module. Meanwhile, the metal circuit layer is formed on the surface of the first lens barrel and is electrically connected to the adjustable lens and the substrate, so that the substrate can be electrified to the adjustable lens to deform the adjustable lens and adjust the focal length of the adjustable lens, and the focusing of the camera module is realized. And the metal circuit layer and the first lens cone form a whole, the first lens cone is provided with the metal circuit layer, the electric connection circuit of the adjustable lens is simplified, and when the camera module is assembled, the metal circuit layer can be installed in place while the first lens cone is installed, the electric connection circuit of the adjustable lens does not need to be installed independently, and the assembly process difficulty of the camera module is low.

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 metal circuit layer according to an embodiment of the disclosure;

FIG. 5 is a schematic structural diagram of a first mirror group and a second mirror group 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.

Reference numerals: 10. a substrate; 11. a photosensitive element; 12. a first mirror group; 121. a first barrel; 121a, a first accommodating groove; 121b, a second accommodating groove; 121c, an extension; 121d, dispensing grooves; 122. a first lens group; 13. a second mirror group; 131. a second barrel; 131a, a position avoiding groove; 131b, cutting surface; 132. a second lens group; 14. an adjustable lens; 15. a metal wiring layer; 15a, a copper layer; 15b, a nickel layer; 15c, a gold layer; 151. a first stage; 152. a middle section; 153. a second stage; 16. a base; 16a, a light through hole; 16b, a third accommodating groove; 16c, a through groove; 17. an optical filter; 18. a second bonding medium; 18a, a notch; 19. a third bonding medium; 100. a camera module; 20. an apparatus main body; 200. an electronic device.

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. 3 together, a structure of a camera module 100 according to an embodiment of the present invention is schematically illustrated, in which the camera module 100 includes a substrate 10, a photosensitive element 11, a first lens group 12, a second lens group 13, an adjustable lens 14, and a metal circuit layer 15, the photosensitive element 11 is disposed on the substrate 10, the first lens group 12 includes a first lens barrel 121 and a first lens group 122 mounted on the first lens barrel 121, the first lens barrel 121 is disposed on the substrate 10, an image side of the first lens barrel 121 faces the photosensitive element 11, a first receiving groove 121a is disposed on an object side end of the first lens barrel 121, the second lens group 13 includes a second lens barrel 131 and a second lens group 132 mounted on the second lens barrel 131, the second lens barrel 131 is disposed on an object side end of the first lens barrel 121, the adjustable lens 14 is disposed in the first receiving groove 121a, and the metal circuit layer 15 is formed on a surface of the first lens barrel 121, the metal wiring layer 15 is electrically connected to the tunable lens 14 and the substrate 10.

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 adjustable lens 14 is disposed in the first accommodating groove 121a of the first lens barrel 121, 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 middle of the camera module 100. It is understood that, compared to the front-mounted design of the adjustable lens 14 in the camera module 100 (the adjustable lens 14 is the lens group closest to the object side in the camera module 100) in the related art, the present embodiment has many advantages by using the design with the adjustable lens 14 mounted in the middle. 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 metal circuit layer 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. Moreover, considering that the internal structure of the camera module 100 is complex, in the related art, when designing the electrical connection traces between the adjustable lens 14 and the substrate 10, because a certain distance exists between the adjustable lens 14 and the substrate 10, and the electrical connection traces of the adjustable lens 14 are usually limited by a part of devices or a part of structures in the camera module 100, the routing needs to be bypassed or avoided, which results in the complex electrical connection traces of the adjustable lens 14 in the related art. However, in the present embodiment, while the first barrel 121 is used to set the adjustable lens 14, the metal circuit layer 15 is formed on the surface of the first barrel 121, the arrangement of the metal circuit layer 15 in the camera module 100 is not affected by the internal structure of the camera module 100, and the routing or avoidance is not required, so that the electrical connection line of the adjustable lens 14 is relatively simple. Moreover, the metal circuit layer 15 and the first lens barrel 121 are formed into a whole, when the camera module 100 is assembled, the metal circuit layer 15 can be installed in place while the first lens barrel 121 is installed, the metal circuit layer 15 does not need to be installed separately, and the difficulty of the assembling process of the camera module 100 is low. In addition, the metal circuit layer 15 is formed on the surface of the first lens barrel 121, and the metal circuit layer 15 can be disposed by using the first lens barrel 121 of the camera module 100 itself, and there is no need to additionally add a bracket or other bearing structures to the metal circuit layer 15, so that the structure of the camera module 100 is simpler, the material is saved, and the miniaturization design of the camera module 100 is realized.

It can be known that, the adjustable lens 14 in the middle of the camera module 100 of this embodiment is arranged, when the focusing capability of the camera module 100 is improved, the first lens barrel 121 that the camera module 100 itself has can be utilized to set the adjustable lens 14, it is not necessary to additionally add a bracket or other structures for setting the adjustable lens 14, so that the structure of the camera module 100 is simpler, and the first lens barrel 121 adopts the mode that the first accommodating groove 121a sets the adjustable lens 14, 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 is disposed in the first accommodating groove 121a, so that the adjustable lens 14 and the first lens group 12 are integrated into a whole, and then the whole, the second lens group 13, the substrate 10 and the photosensitive element 11 are subjected to Active focusing (AA) assembly, so that the assembly process of the camera module 100 is simple.

Illustratively, the metal circuit layer 15 is formed on the surface of the first barrel 121 by a laser direct structuring technique. Wherein, the laser Direct structuring technology is lds (laser Direct structuring). It can be understood that, by adopting the laser direct structuring technology, the metal circuit layer 15 is formed on the surface of the first barrel 121, which can reduce the cost, and the stability of the metal circuit layer 15 is higher, the overall volume is smaller, the overall volume of the camera module 100 can be effectively reduced, and the laser direct structuring technology is beneficial to being applied to miniaturized and light and thin electronic equipment.

Optionally, the surface roughness of the metal wiring layer 15 is less than or equal to 1.6 μm. It can be understood that, considering that the metal circuit layer 15 and the tunable lens 14 are generally electrically connected by a gold wire, when the gold wire is bonded on the metal circuit layer 15, the greater the surface roughness of the metal circuit layer 15 is, the more uneven the surface of the metal circuit layer 15 is, the smaller the effective contact area between the metal circuit layer 15 and the gold wire is. Therefore, the surface roughness of the metal circuit layer 15 may be less than or equal to 1.6 μm, the surface of the metal circuit layer 15 is flat, the effective contact area with the gold wire is large, the connection strength between the gold wire and the metal circuit layer 15 is high, the electrical connection reliability between the metal circuit layer 15 and the tunable lens 14 can be improved, and the surface roughness of the metal circuit layer 15 may be 1.6 μm, 0.8 μm, 0.4 μm, 0.2 μm, and the like, which is not limited in this embodiment.

Further, as shown in fig. 4, the metal circuit layer 15 includes a copper layer 15a, a nickel layer 15b, and a gold layer 15c sequentially stacked on the surface of the first barrel 121, and the thickness of the gold layer 15c is greater than or equal to 0.1 μm. It can be understood that, considering that the metal circuit layer 15 and the tunable lens 14 are usually electrically connected by a gold wire, the surface of the metal circuit layer 15 farthest from the first barrel 121 adopts a gold layer 15c, and when a gold wire is bonded on the gold layer 15c, because the material is the same, the degree of fusion of the gold wire and the metal circuit layer 15 is higher, and the connection strength is higher. In other words, if the thickness of the gold layer 15c is less than 0.1 μm, the thickness of the gold layer 15c is small, and when gold wires are formed on the metal wiring layer 15, some of the gold wires are bonded to the metal layers (the copper layer 15a and the nickel layer 15 b) other than the gold layer 15c, and the connection strength between the gold wires and the metal wiring layer 15 is low. Therefore, the thickness of the metal circuit layer 15 may be greater than or equal to 0.1 μm, so that the gold wires are all bonded to the gold layer 15c, the connection strength between the gold wires and the metal circuit layer 15 is improved, and the electrical connection reliability between the metal circuit layer 15 and the tunable lens 14 is improved, and the thickness of the metal circuit layer 15 may be 0.1 μm, 0.2 μm, 0.3 μm, 0.4 μm, 0.5 μm, and the like, which is not particularly limited in this embodiment.

In the present embodiment, as shown in fig. 5, the metal circuit layer 15 includes a first section 151, an intermediate section 152 and a second section 153 connected in sequence, the first section 151 is formed on an end surface of an object side end of the first barrel 121, the first section 151 is electrically connected to the tunable lens 14, the intermediate section 152 is formed on a peripheral side surface of the first barrel 121 and extends from the first section 151 to the substrate 10, the second section 153 is formed on a peripheral side surface of an image side end of the first barrel 121, and the second section 153 is electrically connected to the substrate 10. It can be understood that, by forming the first segment 151 on the end surface of the object side end of the first barrel 121, the first segment 151 can be disposed as close to the adjustable lens 14 as possible, the distance between the first segment 151 and the adjustable lens 14 is shortened, the adjustable lens 14 can be electrically connected to the first segment 151, the difficulty of bonding a gold wire between the first segment 151 and the adjustable lens 14 is reduced, and because the peripheral side surface of the first barrel 121 is connected to the end surface of the object side end of the first barrel 121, the middle segment 152 is formed by the peripheral side surface of the first barrel 121 and extends to the second segment 153 formed on the peripheral side surface of the image side end of the first barrel 121, the metal circuit layer 15 is formed by the structure of the first barrel 121, the electrical connection circuit between the adjustable lens 14 and the substrate 10 can be simplified, and the second segment 153 is as close to the substrate 10 as possible, the distance between the second segment 153 and the substrate 10 can be shortened, the electrical connection between the substrate 10 and the second segment 153 is facilitated, the difficulty of the assembly process of the camera module 100 is effectively reduced.

In some embodiments, as shown in fig. 3 and fig. 5, a second receiving groove 121b communicating with the first receiving groove 121a is further disposed on an end surface of the object-side end of the first barrel 121, an end of the first section 151 away from the middle section 152 is disposed in the second receiving groove 121b, and an end of the first section 151 away from the middle section 152 is electrically connected to the adjustable lens 14 through a gold wire. It can be understood that, by disposing the end of the first segment 151 away from the intermediate segment 152 in the second receiving groove 121b, on the one hand, the space occupied by the metal wiring layer 15 can be reduced, and the total length of the camera module 100 can be reduced due to the end surface of the object-side end of the first barrel 121, i.e., the space between the first lens group 12 and the second lens group 13. On the other hand, by disposing the end of the first segment 151 away from the middle segment 152 in the second receiving groove 121b, the end of the first segment 151 away from the middle segment 152 is lower than the surface of the adjustable lens 14 facing the second lens group 13 (the surface provided with the electrical connection portion electrically connected with the first segment 151) along the optical axis direction of the camera module 100, and when the adjustable lens 14 and the end of the first segment 151 away from the middle segment 152 (provided with the electrical connection portion) are electrically connected by a gold wire, the arc height of the gold wire can be effectively reduced, that is, the space occupied by the gold wire along the optical axis direction of the camera module 100 is reduced, and the total length of the camera module 100 can be reduced.

For example, as shown in fig. 2 and fig. 3, a first electrical connection portion is disposed on a surface of the adjustable lens 14 facing the object side, a second electrical connection portion is disposed at an end of the first segment 151 away from the intermediate segment 152, the second electrical connection portion is electrically connected to the first electrical connection portion through a gold wire, a height difference between the first electrical connection portion and the second electrical connection portion along the optical axis of the camera module 100 is h, and h is greater than or equal to 0.05mm and less than or equal to 0.2 mm. Since the first and second electrical parts are not explicitly shown in the drawings, and since the first and second electrical parts are small, the height difference h between the object-side-facing surface of the adjustable lens 14 and the first object-side-facing surface is approximately expressed in fig. 2 as a height difference between the first electrical part and the second electrical part. It can be understood that, if the height difference h between the first electrical connection part and the second electrical connection part is less than 0.05mm, the height difference is small, the arc height of the gold wire connecting the first electrical connection part and the second electrical connection part is large, the space occupied by the gold wire is large, and the total length of the camera module 100 is large. If the height difference h between the first electric connection part and the second electric connection part is larger than 0.2mm, the height difference is larger, the radian of the gold wire is smaller, the larger the pulling degree of the first electric connection part and the second electric connection part on the two ends of the gold wire is, the higher the risk that the gold wire is pulled and broken is. Therefore, the height difference h between the first electrical connection part and the second electrical connection part may be 0.05mm or more and 0.2mm or less, the arc height of the gold wire is small, the space occupied by the gold wire is small, the total length of the camera module 100 is small, and the radian of the gold wire is large, so that the risk of breaking the gold wire due to pulling can be reduced, and the height difference h between the first electrical connection part and the second electrical connection part may be 0.05mm, 0.08mm, 0.11mm, 0.14mm, 0.17mm, 0.2mm, and the like, which is not specifically limited in this embodiment.

Optionally, the adjustable lens 14 is electrically connected to the first segment 151 through a gold wire (not shown), and a position-avoiding groove 131a is disposed on a surface of the second barrel 131 facing the first barrel 121, where the position-avoiding groove 131a is used for avoiding the gold wire. It can be understood that, avoiding the gold wire through the avoiding groove 131a can provide a setting space for the gold wire, and on the other hand, can avoid the situation that the gold wire interferes with the second barrel 131 to cause damage to the gold wire, thereby ensuring the electrical connection between the adjustable lens 14 and the first segment 151.

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 disposed 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, a third 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 third receiving groove 16 b. It can be understood that, by disposing the optical filter 17 in the third receiving groove 16b, the space occupied by the optical 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.

Exemplarily, a through groove 16c is formed on the peripheral side surface of the base 16, the through groove 16c penetrates through the surface of the base 16 facing the image side and the surface facing the object side, an extension portion 121c is formed on the end surface of the image side end of the first barrel 121, the extension portion 121c extends toward the substrate 10 along the through groove 16c, and one end of the metal circuit layer 15, which is electrically connected to the substrate 10, is formed on the surface of the extension portion 121 c. It can be understood that, on the one hand, the through slot 16c of the base 16 accommodates the extension 121c, so that the space occupied by the extension 121c can be reduced, and the overall volume of the camera module 100 can be reduced. On the other hand, the extending portion 121c extends toward the substrate 10, so that the end of the metal circuit layer 15 electrically connected to the substrate 10 is as close to the substrate 10 as possible, the distance between the two is shortened, the metal circuit layer 15 is electrically connected to the substrate 10, and the difficulty of the assembly process of the camera module 100 is reduced.

In some embodiments, the peripheral side surface of the tunable lens 14 abuts against the sidewall of the first receiving groove 121 a. It can be understood that, on the one hand, when the adjustable lens 14 is assembled with the first barrel 121, the peripheral side surface of the adjustable lens 14 can abut against the sidewall of the first accommodating groove 121a, so as to position the adjustable lens 14, thereby improving the assembly precision and reducing the difficulty of the assembly process. On the other hand, after the adjustable lens 14 is assembled with the first barrel 121, the peripheral side surface of the adjustable lens 14 abuts against the side wall of the first accommodating groove 121a, and the side wall of the first accommodating groove 121a can limit the adjustable lens 14, so as to prevent the relative position of the adjustable lens 14 relative to the first accommodating groove 121a (i.e., the first barrel 121) from changing, 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 121a has an outer dimension adapted to the adjustable lens 14. For example, the tunable lens 14 of the present embodiment is square, and the first accommodating groove 121a is a square groove matching with the external dimension of the tunable lens 14. In some other embodiments, the tunable lens 14 may have a circular shape, and the first receiving groove 121a may match with a circular groove, which is not limited in this embodiment.

In some embodiments, referring to fig. 2 and 3 again, the surface of the tunable lens 14 facing the image side may be adhered to the bottom surface of the first accommodating cavity 121a, so as to fix the tunable lens 14 in the first accommodating cavity 121 a.

Optionally, the end surface of the object-side end of the first barrel 121 is further provided with a plurality of dispensing grooves 121d communicated with the first accommodating groove 121a, the dispensing grooves 121d are circumferentially distributed around the first accommodating groove 121a, and the dispensing grooves 121d are filled with a first adhesive medium (not shown) to adhere and fix the adjustable lens 14 to the first accommodating groove 121 a. It is understood that, on the one hand, if the tunable lens 14 and the first receiving groove 121a have no other bonding position, the tunable lens 14 is fixed to the first receiving groove 121a by the first bonding medium of the plurality of glue grooves 121d, and if the tunable lens 14 and the first receiving groove 121a have other bonding position (for example, the surface of the tunable lens 14 facing the image side can be bonded to the bottom surface of the first receiving groove 121 a), the reliability of fixing the tunable lens 14 to the first receiving groove 121a by the first bonding medium of the plurality of glue grooves 121d can be improved. On the other hand, the plurality of glue dispensing grooves 121d are circumferentially distributed around the first receiving groove 121a, so that the tunable lens 14 and the first receiving groove 121a have a plurality of bonding positions, and are circumferentially distributed around the tunable lens 14, which can improve the bonding reliability of the tunable lens 14 and the first receiving groove 121a, and when the first bonding medium is subjected to variation (expansion with heat and contraction with cold), the acting forces of the first bonding medium of each glue dispensing groove 121d on the tunable lens 14 can be mutually submitted, thereby reducing the risk that the tunable lens 14 is subjected to the relative position change of the first receiving groove 121a due to the acting force generated when the first bonding medium is varied, and the optical performance of the camera module 100 is reduced.

In some embodiments, as shown in fig. 5, a cut surface 131b is disposed on the peripheral side of the second barrel 131, the cut surface 131b is disposed in a staggered manner from the peripheral side surface of the object-side end of the first barrel 121 to expose a portion of the end surface of the object-side end of the first barrel 121, the surface of the second barrel 131 facing the first barrel 121 is fixedly bonded to the end surface of the object-side end of the first barrel 121 through a second bonding medium 18, a notch 18a is disposed at a position of the second bonding medium 18 corresponding to the cut surface 131b, the cut surface 131b is fixedly bonded to the end surface of the object-side end of the first barrel 121 through a third bonding medium 19, and the third bonding medium 19 covers the notch 18 a. It can be understood that, when the camera module 100 is assembled, after the first barrel 121 and the second barrel 131 are bonded by the second bonding medium 18, when the second bonding medium 18 is baked and cured, the gap 18a can be used for escaping air, so as to avoid the occurrence of a situation that the relative position of the first barrel 121 and the second barrel 131 is changed due to the expansion of air caused by a high temperature during baking, and improve the assembly accuracy. After the second adhesive medium 18 is cured, the notch 18a is covered with the third adhesive medium 19, which improves the adhesion strength between the first barrel 121 and the second barrel 131, and prevents foreign matter from entering the notch 18a and affecting the performance of the imaging module 100.

Exemplarily, the distance from the tangent plane 131b to the peripheral side of the object side end of the first barrel 121 is d₁，d₁Not less than 0.3 mm. It is understood that, when the camera module 100 is assembled, the third adhesive medium 19 connecting the first barrel 121 and the second barrel 131 is formed by dispensing with a glue needle, and the diameter of the glue needle is usually 0.3mm or more, therefore, if the distance d is larger than the above-mentioned distance d₁If the diameter is less than 0.3mm, when dispensing is performed at a position between the tangent plane 131b and the peripheral side surface of the object-side end of the first barrel 121 to form the third adhesive medium 19, the needle head of the glue needle may collide with the second barrel 131 to cause the second barrel 131 to displace relative to the first barrel 121, which affects the assembly precision of the camera module 100, and during dispensing, the glue easily overflows from the end surface of the object-side end of the first barrel 121, even flows to the substrate 10, which affects the performance of the camera module 100. Therefore, the distance d from the tangent plane 131b to the peripheral side of the object side end of the first barrel 121₁Can be d₁Not less than 0.3mm, the displacement of the second lens barrel 131 relative to the first lens barrel 121 caused by the collision between the needle head of the glue needle and the second lens barrel 131 is avoided, and the situation that glue easily overflows from the end face of the object side end of the first lens barrel 121 and even flows to the substrate 10 when the glue needle is dispensed is avoided, and d₁May be 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, etc., and this embodiment is not particularly limited thereto.

Further, the tangent plane 131b is an inclined plane, and the tangent plane 131b is inclined to the end surface of the object-side end of the first barrel 121, or the tangent plane 131b is a stepped plane. It can be understood that, by the tangent plane 131b being an inclined plane or a stepped plane, when the camera module 100 is assembled, the risk that the second barrel 131 is displaced relative to the first barrel 121 due to the collision between the needle of the plastic needle and the second barrel 131 can be further reduced, and the assembly accuracy of the camera module 100 is improved. In addition, the present embodiment provides a plurality of different types of cutting surfaces 131b, which can be selected according to actual situations to meet different use requirements.

Illustratively, the gap 18a has a width d₂，0.5mm≤d₂Less than or equal to 2 mm. It will be appreciated that if the width d of the notch 18a is such that₂If the thickness is less than 0.5mm, when the second adhesive medium 18 is baked and cured, the gap 18a for escaping air is small, the efficiency of escaping air is low, and the risk of changing the relative position of the first lens barrel 121 and the second lens barrel 131 caused by the expansion of air due to the lack of time for escaping air exists. If the width d of the notch 18a is₂If the thickness is larger than 2mm, the area of the second bonding medium 18 is small, the bonding area between the first barrel 121 and the second barrel 131 is small, and the bonding strength is low. Thus, the width d of the notch 18a₂D can be more than or equal to 0.5mm₂2mm or less, the situation that the relative positions of the first lens barrel 121 and the second lens barrel 131 are changed due to insufficient escape time when the second bonding medium 18 is baked and cured is avoided, the bonding strength of the first lens barrel 121 and the second lens barrel 131 can be improved, and the width d of the gap 18a₂May be 0.5mm, 0.7mm, 0.9mm, 1.1mm, 1.3mm, 1.5mm, 1.8mm, 2mm, etc., and this is not particularly limited in this embodiment.

Further, the third adhesive medium 19 has a width d₃，1mm≤d₃Less than or equal to 3 mm. It will be appreciated that if the width d of the third bonding medium 19 is large₃< 1mm, there is a risk that the third adhesive medium 19 cannot completely cover the notch 18 a. If the width d of the third adhesive medium 19₃If the third adhesive agent 19 has already met the requirements of the cover gap 18a, it is wasted if it is greater than 3 mm. Therefore, the width d of the third adhesive medium 19₃D can be 1mm or less₃Less than or equal to 3mm, ensures that the third bonding medium 19 completely covers the gap 18a, can save materials, and has a width d of the second bonding level₃May be 1mm, 1.3mm, 1.6mm, 1.9mm, 2.2mm, 2.5mm, 2.8mm, 3mm, etc., and this embodiment is not particularly limited thereto.

Alternatively, the substrate 10 may be any one of a hard circuit board, a rigid-flex board, or a flexible circuit board. 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 second embodiment of the present invention, the photosensitive element 11 is disposed on the substrate 10, the first lens group 12 includes a first lens barrel 121 and a first lens group 122 mounted on the first lens barrel 121, the first lens barrel 121 is disposed on the substrate 10, the second lens group 13 includes a second lens barrel 131 and a second lens group 132 mounted on the second lens barrel 131, the second lens barrel 131 is disposed on the object side end of the first lens barrel 121, and the adjustable lens 14 is disposed by using the first accommodating groove 121a on the end surface of the object side end of the first lens barrel 121, that is, the adjustable lens 14 is located between the first lens group 12 and the second lens group 13, so as to achieve the middle placement of the adjustable lens 14 in the camera module 100. Meanwhile, the metal circuit layer 15 is formed on the surface of the first barrel 121, and the metal circuit layer 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 focusing of the camera module 100. Moreover, the metal circuit layer 15 and the first lens barrel 121 are formed into a whole, the metal circuit layer 15 is arranged by the first lens barrel 121, so that the electrical connection circuit of the adjustable lens 14 is simplified, and when the camera module 100 is assembled, the first lens barrel 121 can install the metal circuit layer 15 in place at the same time, the electrical connection circuit of the adjustable lens 14 does not need to be installed separately, and the difficulty of the assembly process of the camera module 100 is low.

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 apparatus 200, in which the electrical connection circuit of the adjustable lens of the camera module 100 is relatively simple, and the assembly process difficulty of the camera module 100 is relatively low.

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:

s301, mounting the photosensitive element on the substrate.

It is understood that, by performing step S301, the photosensitive element is fixed on the substrate, and the photosensitive element is electrically connected to the substrate.

S302, the adjustable lens is installed in the first accommodating groove and electrically connected with the adjustable lens and the metal circuit layer.

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 the step S302 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 metal circuit layer in a gold wire bonding mode, and then baking is carried out.

More specifically, the process of electrically connecting the tunable lens to the metal circuit layer by using a gold wire may be: the method comprises the steps of setting preset gold wire related parameters (such as diameter, arc height and the like) in gold wire bonding equipment (such as a gold wire bonding machine), placing a first lens group (a first lens barrel) on a jig of the equipment, fixing the first lens group (such as vacuum suction fixing), moving a ceramic nozzle of the equipment to enable a gold wire ball to be located at a second electric connection part (Pad and a bonding Pad) on one end (located in a second accommodating groove) of a metal circuit layer, moving the ceramic nozzle along a preset path and enabling the ceramic nozzle to move to the surface of the adjustable lens facing the object side, and enabling the ceramic nozzle to enable the gold wire ball to be located at the first electric connection part (Pad and the bonding Pad) of the adjustable lens again, so that the electric connection of the adjustable lens and the metal circuit layer is completed.

And S303, conducting the metal circuit layer 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 metal circuit layer and the substrate are conducted in the alignment device, and the circuit provided by the alignment device is conducted, so that the situation that when the metal circuit layer and the substrate are conducted, the relative position of the first 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 subsequently conducted, thereby ensuring the normal active alignment. After the active alignment is completed, the conduction between the metal circuit layer and the substrate can be released.

And when the assembly of the first lens group is completed, the metal circuit layer and the first 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 manufacture procedure of the camera module is reduced.

S304, the first mirror group, the second mirror group, the first mirror group and the substrate are fixedly bonded.

It can be understood that, after step S304 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 image side end of the first lens group is bonded to the surface of the second lens group facing the object side, and a gap for air escape is left in the bonding (e.g., the first bonding medium in the first embodiment), and after curing, further glue is added (e.g., the second bonding medium in the first embodiment) 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.

And S305, welding the metal circuit layer and the substrate for electric connection.

It can be understood that, after the step S305 is performed, the substrate and the tunable lens are conducted through the metal circuit layer, and at this time, the electrical assembly between the components of the camera module is completed.

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 on the first lens barrel, the first lens barrel is arranged on the substrate, the image side end of the first lens barrel faces the photosensitive element, and a first accommodating groove is formed in the end face of the object side end of the first lens barrel;

the second lens group comprises a second lens barrel and a second lens group arranged in the second lens barrel, and the second lens barrel is arranged at the object side end of the first lens barrel;

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

the metal circuit layer is formed on the surface of the first lens barrel and is electrically connected to the adjustable lens and the substrate.

2. The camera module according to claim 1, wherein the metal circuit layer includes a first section, an intermediate section and a second section, which are sequentially connected, the first section is formed on an end surface of an object side end of the first barrel, the first section is electrically connected to the adjustable lens, the intermediate section is formed on a peripheral side surface of the first barrel and extends from the first section to the substrate, the second section is formed on a peripheral side surface of an image side end of the first barrel, and the second section is electrically connected to the substrate.

3. The camera module according to claim 2, wherein a second receiving groove is further disposed on an end surface of the object-side end of the first barrel, the second receiving groove is disposed at an end of the first segment away from the middle segment, and an end of the first segment away from the middle segment is electrically connected to the adjustable lens through a gold wire.

4. The camera module according to claim 2, wherein a first electrical connection portion is disposed on a surface of the adjustable lens facing the object side, a second electrical connection portion is disposed at an end of the first section away from the middle section, the second electrical connection portion is electrically connected with the first electrical connection portion through a gold wire, a height difference between the first electrical connection portion and the second electrical connection portion along an optical axis direction of the camera module is h, and h is greater than or equal to 0.05mm and less than or equal to 0.2 mm.

5. The camera module according to claim 2, wherein the adjustable lens is electrically connected to the first segment through a gold wire, and a space avoiding groove is formed in a surface of the second barrel facing the first barrel, and the space avoiding groove is used for avoiding the gold wire.

6. The camera module according to any one of claims 1 to 5, wherein the metal wiring layer is formed on the surface of the first barrel by a laser direct structuring technique.

7. The camera module of any of claims 1-5, wherein the surface roughness of the metal trace layer is less than or equal to 1.6 μm.

8. The camera module according to any one of claims 1 to 5, wherein the metal wiring layer comprises a copper layer, a nickel layer, and a gold layer laminated in this order on the surface of the first barrel, and the thickness of the gold layer is greater than or equal to 0.1 μm.

9. The camera module according to any one of claims 1 to 5, further comprising a base and an optical filter, wherein the base is disposed on the substrate, the base is provided with a light hole for allowing light to irradiate 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 optical filter covers the light hole.

10. The image capturing module of claim 9, wherein a through groove is formed on a peripheral side surface of the base, the through groove penetrates through a surface of the base facing the image side and a surface of the base facing the object side, an extension portion is formed on an end surface of the first barrel at an image side end, the extension portion extends toward the substrate along the through groove, and an end of the metal circuit layer electrically connected to the substrate is formed on a surface of the extension portion.

11. The camera module of any one of claims 1 to 5, wherein a peripheral side surface of the adjustable lens abuts against a side wall of the first receiving groove.

12. The camera module according to any one of claims 1 to 5, wherein a plurality of dispensing grooves are further disposed on an end surface of the object-side end of the first barrel, the dispensing grooves are circumferentially distributed around the first receiving groove, and each dispensing groove is filled with a first bonding medium to bond and fix the adjustable lens to the first receiving groove.

13. The camera module according to any one of claims 1 to 5, wherein a cut surface is disposed on a peripheral side of the second barrel, the cut surface is offset from a peripheral side surface of the object-side end of the first barrel to expose a portion of an end surface of the object-side end of the first barrel, a surface of the second barrel facing the first barrel is adhesively fixed to the end surface of the object-side end of the first barrel through a second adhesive medium, a notch is disposed at a position of the second adhesive medium corresponding to the cut surface, the cut surface and the end surface of the object-side end of the first barrel are adhesively fixed through a third adhesive medium, and the third adhesive medium covers the notch.

14. The camera module of claim 13, wherein the distance from the tangent plane to the peripheral side surface of the object-side end of the first barrel is d₁，d₁≥0.3mm。

15. The camera module of claim 13, wherein the cut surface is an inclined surface inclined to an end surface of an object-side end of the first barrel, or the cut surface is a stepped surface.

16. The camera module of claim 13, wherein the gap has a width d₂，0.5mm≤d₂Not more than 2mm, the width of the third bonding medium is d₃，1mm≤d₃≤3mm。

17. An electronic apparatus, characterized in that the electronic apparatus comprises an apparatus main body and the camera module according to any one of claims 1 to 16, the camera module being provided to the apparatus main body.

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

mounting the photosensitive element onto the substrate;