WO2020258094A1

WO2020258094A1 - Glue overflow-proof lens assembly and electronic device

Info

Publication number: WO2020258094A1
Application number: PCT/CN2019/093095
Authority: WO
Inventors: 韦传冬
Original assignee: 瑞声光学解决方案私人有限公司
Priority date: 2019-06-26
Filing date: 2019-06-26
Publication date: 2020-12-30
Also published as: CN210090798U

Abstract

A glue overflow-proof lens assembly (2) and an electronic device (1). The glue overflow-proof lens assembly (2) comprises a lens barrel (100) and a lens set (200) provided within the lens barrel (100). The lens barrel (100) comprises an inner wall (130) close to an optical axis, an outer wall (140) provided opposite to the inner wall (130), and an image side end face (110) connecting the inner wall (130) to the outer wall (140). A glue overflow groove (120) is provided on the lens barrel (100). The glue overflow groove (120) has an entry (122). The entry (122) is located on the image side end face (110) and the entry (122) is located between the inner wall (130) and the outer wall (140). By providing the glue overflow groove (120) on the lens barrel (100) and making the entry (122) of the glue overflow groove (120) be located on the image side end face (110), when the lens assembly (2) needs to be adhered to another component, excess glue can enter the glue overflow groove (120) from the entry (122) and would not easily overflow from a side of the image side end face (110), thereby reducing overflow of a glue to the lens set (200) and ensuring good quality of imaging of the lens assembly (2).

Description

Anti-spill glue lens assembly and electronic equipment

Technical field

This application relates to the technical field of camera lenses, and in particular to an anti-overflow glue lens assembly and electronic equipment.

Background technique

In recent years, with the continuous development of science and technology, electronic devices continue to develop toward intelligence. In addition to digital cameras, portable electronic devices such as tablet computers and mobile phones are also equipped with lens components.

technical problem

In the prior art, the lens assembly generally includes a lens barrel with a light-transmitting hole and a lens group accommodated in the lens barrel. When the lens assembly is installed on an electronic device, glue is basically used to bond the image side end surface of the lens barrel to Install the module. When bonding, you need to apply a circle of glue on the mounting module first, and then put the lens assembly on for bonding. In this process, the excess glue will easily overflow from the image side end of the lens barrel inward or outward. In this way, the glue is very likely to overflow to the lens, thereby affecting the optical effect of the lens.

Therefore, it is necessary to provide a new type of anti-spill glue lens assembly to overcome the above-mentioned problems.

Technical solutions

The purpose of this application is to provide an anti-overflow glue lens assembly and electronic equipment that prevent excess glue from overflowing.

The technical solution of this application is as follows:

An anti-overflow glue lens assembly, comprising a lens barrel and a lens group arranged in the lens barrel. The lens barrel includes an inner wall close to the optical axis, an outer wall arranged opposite to the inner wall, and connecting the inner wall and the lens group. The image side end surface of the outer wall, the lens barrel is provided with an overflow groove, the overflow groove has an entrance, the entrance is located on the image side end surface, and the entrance is located between the inner wall and the outer wall .

Further, the number of the overflow grooves is multiple, and the plurality of overflow grooves are arranged at intervals.

Further, the outer wall has a polygonal shape and includes a plurality of bending sections, and the positions of the plurality of glue overflow grooves correspond to the positions of the plurality of bending sections respectively.

Further, the outer wall is quadrilateral, and the number of the bending section and the overflow groove is four.

Further, the number of the overflow groove is one, and the inlet is arranged around the inner wall.

Further, the entrance divides the image-side end surface into an inner ring surface and an outer ring surface spaced apart from each other.

Further, the inner ring surface is circular, and the outer ring surface is quadrilateral.

Further, the lens barrel is also provided with an air escape hole, and the air escape hole is in communication with the glue overflow groove.

Further, the air escape hole penetrates the bottom of the glue overflow groove.

In addition, the present application also provides an electronic device including the anti-overflow glue lens assembly.

Beneficial effect

The beneficial effects of this application are: the spill-proof glue lens assembly and electronic equipment of the present application have an overflow glue groove on the lens barrel, and the entrance of the overflow glue groove is located on the image side end surface and between the inner wall and the outer wall. When the components are bonded with other components, the excess glue can enter the glue overflow groove from the entrance, and it is not easy to overflow from the side of the image side end surface, which reduces the phenomenon of glue overflow to the lens group and ensures good imaging quality of the lens assembly .

Description of the drawings

Fig. 1 is a schematic diagram of the structure of the electronic device according to the first embodiment of the application;

2 is a schematic diagram of the overall structure of the anti-spill glue lens assembly according to the first embodiment of the application;

FIG. 3 is a top view of the anti-spill glue lens assembly according to the first embodiment of the application;

Figure 4 is a cross-sectional view of A-A shown in Figure 3;

5 is a schematic diagram of the overall structure of the anti-spill glue lens assembly according to the second embodiment of the application;

Fig. 6 is a bottom view of the anti-spill glue lens assembly according to the second embodiment of the application.

Embodiments of the invention

The application will be further described below in conjunction with the drawings and implementations.

It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of this application are only used to explain the difference between components in a specific posture (as shown in the accompanying drawings). If the relative position relationship, movement situation, etc. change, the directional indication will change accordingly.

In addition, the descriptions related to “first”, “second”, etc. in this application are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on what can be achieved by a person of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be achieved, it should be considered that such a combination of technical solutions does not exist. , Not within the scope of protection required by this application.

Example one

Please refer to Figures 1, 2 and 4, the first embodiment of the present application provides an electronic device 1, the electronic device 1 has an anti-overflow glue lens assembly 2, the anti-overflow glue lens assembly 2 includes a lens barrel 100 and arranged on the lens The lens group 200 in the barrel 100. The lens barrel 100 includes an inner wall 130 close to the optical axis, an outer wall 140 disposed opposite to the inner wall 130, and an image side end surface 110 connecting the inner wall 130 and the outer wall 140, and the lens barrel 100 is provided with a glue overflow groove 120. The glue overflow groove 120 has an inlet 122, which is located on the image side end surface 110 of the lens barrel 100, and the inlet 122 is located between the inner wall 130 and the outer wall 140.

In the anti-overflow glue lens assembly of this embodiment, a glue overflow groove 120 is provided on the lens barrel 100, and the entrance 122 of the glue overflow groove 120 is located on the image side end surface 110 and between the inner wall 130 and the outer wall 140. When the component is bonded to other components, the excess glue can enter the glue overflow groove 120 from the inlet 122, and it is not easy to overflow from the side of the image side end surface 110, which reduces the phenomenon of glue overflow to the lens group 200 and ensures the lens assembly Good image quality.

The number of the overflow grooves 120 is multiple, and the multiple overflow grooves 120 are arranged at intervals, and correspondingly, the openings of the multiple overflow grooves 120 are also arranged at intervals. When bonding the lens assembly, the multiple glue overflow grooves 120 can contain excess glue in different areas of the image side end surface 110.

In this embodiment, the lens barrel 100 includes a first barrel portion 150 and a second barrel portion 160 sequentially arranged from the image side to the object side. The outer size of the second barrel portion 160 is smaller than that of the first barrel portion 150. The image side end surface 110 of the barrel 100 is located on the first barrel portion 150. The first cylindrical portion 150 includes an inner side surface close to the optical axis and an outer side surface disposed opposite to the inner side surface. As shown in FIGS. 2 and 3, the outer side surface is polygonal and includes a plurality of bending sections 152, and a plurality of bending sections 152 is arranged around the optical axis. The positions of the inlets 122 of the plurality of overflow grooves 120 correspond to the positions of the plurality of bending sections 152 respectively.

In this embodiment, the outer side surface of the first cylinder portion 150 is quadrilateral, which includes four bending sections 152. The number of the glue overflow grooves 120 is four, and the entrances 122 of the four glue overflow grooves 120 are respectively arranged on the image side end surface 110 at positions corresponding to the four bending sections 152, that is, in this embodiment, the Glue overflow grooves 120 are dug near the four corners of a cylinder 150. Before the glue overflow groove 120 is opened, the wall thickness at the four corners of the first cylinder 150 is greater than the wall thickness at other positions. In this embodiment, the glue overflow groove 120 is set at the four corners, which can reduce the The wall thickness of one cylinder 150 is uniform.

It can be understood that the size and depth of the glue overflow groove 120 can be set according to actual requirements, and are not specifically limited here.

Further, as shown in FIGS. 3 and 4, the lens barrel 100 is also provided with an air escape hole 170, which is connected to the glue overflow groove 120. Specifically, the air escape hole 170 penetrates the bottom or groove of the glue overflow groove 120. wall. The air escape hole 170 includes a first opening and a second opening. The first opening is disposed on the bottom or wall of the glue overflow groove 120, and the second opening is disposed on the outer wall 140. When the glue overflows to the glue overflow groove 120, the gas in the glue overflow groove 120 can be discharged to the outside through the air escape hole 170 to avoid the increase of the air pressure in the glue overflow groove 120 and the glue cannot flow in.

Specifically, the first opening is provided at the bottom of the glue overflow groove 120, and the second opening is provided on the first cylinder 150 and is staggered from the second cylinder 160, that is, the second opening is located in the first cylinder. The portion 150 and the second cylindrical portion 160 are outside the overlapping area of projections in a plane perpendicular to the optical axis. In this embodiment, the first cylindrical portion 150 further includes a connecting surface 154 between the inner side surface and the outer side surface, the connecting surface 154 is disposed close to the second cylindrical portion 160, and the second opening is located on the connecting surface 154.

Of course, in other embodiments, the air escape hole 170 may also penetrate the second cylindrical portion 160, and the second opening is provided on the second cylindrical portion 160.

In this embodiment, the number of air escape holes 170 is one, and one air escape hole 170 is connected to one of the overflow grooves 120. In other embodiments, the number of air escape holes 170 may be multiple, and the multiple air escape holes 170 are respectively connected to the multiple glue overflow grooves 120.

It is understandable that the lens group 200 inside the lens barrel 100 includes at least one lens, and the specific number of lenses can be selected and set according to different requirements. In this embodiment, a lens assembly with four lenses is used. The lens group 200 includes a first lens 210, a second lens 220, a third lens 230, and a fourth lens 240 laminated and coaxially arranged with the first lens 210, the first lens 210, the second lens 220, the third lens 230 and The fourth lens 240 is arranged in sequence from the image side to the object side.

It is worth mentioning that, in this embodiment, a shading member 300 may be sandwiched between any two adjacent lenses in the lens group 200. The shading member 300 includes a shading plate 310 or a shading sheet 320, and the shading sheet 320 is sandwiched. Between any two adjacent lenses in the lens group 200, the shading plate 310 is sandwiched between the first lens 210 and the second lens 220 in the lens group 200. The light-shielding sheet 320 and the light-shielding plate 310 can reduce the reflection of the lens barrel wall. In addition, a light-shielding sheet 320 is arranged between every two adjacent lenses, which can also effectively block the intake of some stray light and the reflection of light inside the lens assembly. Avoid the influence of stray light on image quality.

The light-shielding sheet 320 has a hollow ring structure, and the number and position of the light-shielding sheet 320 can be determined by actual needs, and on the premise of effectively shielding stray light, it can be made as thin and light as possible.

Example two

5 and 6, the difference between the anti-overflow glue lens assembly 2'of the second embodiment of the present application and the first embodiment is that there is only one glue overflow groove 120 in this embodiment, and the overflow glue The entrance 122 of the groove 120 is arranged around the inner wall 130 of the lens barrel 100.

Preferably, the shape of the entrance 122 is similar to that of the image side end surface 110. It can be understood that the entrance 122 divides the image side end surface 110 into mutually spaced inner ring surface 112 and outer ring surface 114, and the inner ring surface 112 is circular. The outer ring surface 114 is quadrilateral. . Therefore, in this embodiment, the wall thickness of the side of the first cylinder 150 close to the image side end surface 110 can be kept completely consistent; at the same time, when the lens assembly is bonded to other components, excess glue can enter the overflow glue from the entrance In the groove, it is not easy to overflow from the side of the image side end surface, reducing the phenomenon of glue overflowing to the lens group, and ensuring good imaging quality of the lens assembly.

The above are only the implementation manners of this application. It should be pointed out here that for those of ordinary skill in the art, improvements can be made without departing from the creative concept of this application, but these all belong to this application. The scope of protection.

Claims

An anti-overflow glue lens assembly, comprising a lens barrel and a lens group arranged in the lens barrel. The lens barrel includes an inner wall close to the optical axis, an outer wall arranged opposite to the inner wall, and connecting the inner wall and the lens group. The image side end surface of the outer wall is characterized in that a glue overflow groove is opened on the lens barrel, the glue overflow groove has an entrance, the entrance is located on the image side end surface, and the entrance is located on the inner wall and the Between the outer wall.
The anti-overflow glue lens assembly according to claim 1, wherein the number of the overflow glue grooves is multiple, and the plurality of glue overflow grooves are arranged at intervals.
The anti-overflow glue lens assembly according to claim 2, wherein the outer wall has a polygonal shape and includes a plurality of bending sections, and the positions of the plurality of overflow grooves are corresponding to those of the plurality of bending sections. The positions correspond to each other.
4. The anti-overflow glue lens assembly of claim 3, wherein the outer wall is quadrilateral, and the number of the bent section and the overflow groove are both four.
The anti-overflow glue lens assembly according to claim 1, wherein the number of the overflow glue groove is one, and the inlet is arranged around the inner wall.
The anti-overflow glue lens assembly of claim 5, wherein the entrance divides the image-side end surface into an inner ring surface and an outer ring surface spaced apart from each other.
The anti-overflow glue lens assembly of claim 6, wherein the inner ring surface is circular, and the outer ring surface is quadrilateral.
The anti-overflow glue lens assembly of claim 1, wherein the lens barrel is further provided with an air escape hole, and the air escape hole is in communication with the glue overflow groove.
8. The anti-overflow glue lens assembly of claim 8, wherein the air escape hole penetrates the bottom of the glue overflow groove.
An electronic device, characterized by comprising the anti-spill glue lens assembly of any one of claims 1-9.