WO2020258330A1 - Lens module - Google Patents

Abstract

A lens module (10), which comprises a lens cylinder (100) and lenses, the lens cylinder (100) comprising a top wall (110) having a light through-hole (111) and a cylinder wall (120) extending in a bended manner from the edge of the top wall (110), and the top wall (110) and the cylinder wall (120) being connected and enclosed to form a chamber; the lenses are contained in the chamber, and comprise an optical part (210) used for imaging and a connection part (220) which is provided surrounding the optical part (210). The connection part (220) comprises a side surface (223) which connects to an object side surface (221) and the image side surface (222), and abuts against the cylinder wall (120) and the cylinder wall (120) comprises an abutting surface (1211) which abuts against the side surface (223). The lens module (10) is further provided with a glue-containing groove (101) which is formed by forming a recess in at least one among the side surface (223) and the abutting surface (1211). And the connection part (220) further comprises a glue injection orifice (225) which is formed by forming a recess from the image side surface (222) to the object side surface (221) and is in communication with the glue-containing groove (101). When assembling, the glue may be injected by means of the glue injection orifice (225) into the glue-containing groove (101), so as to connect the lenses to the lens cylinder (100), and the extra glue in the glue-containing groove (101) may be contained in the glue injection orifice (225) to prevent the glue from overflowing to the optical part (210) of the lens to affect the imaging of the lens module (10).

Description

Lens module Technical field

This application relates to the field of optical imaging technology, and specifically refers to a lens module.

Background technique

With the continuous development of technology, portable electronic devices continue to develop in the direction of intelligence and miniaturization. In addition to digital cameras, portable electronic devices, such as tablet computers and mobile phones, are also equipped with lens modules with shooting functions.

technical problem

The existing lens module generally includes a lens barrel and a lens. The lens is located in the lens barrel and is fixed on the lens barrel by dispensing glue. However, when dispensing glue, the amount of glue is not easy to control. When the amount of glue is too much, excess glue may overflow into the optical part of the lens for imaging, affecting the imaging of the lens module.

Therefore, it is necessary to provide a lens module.

Technical solutions

The purpose of this application is to provide a lens module, which aims to solve the problem that when the existing lens module is connected to the lens barrel by dispensing glue, the glue easily overflows to the optical part of the lens and affects the imaging of the lens module. problem.

The technical solution of this application is as follows:

A lens module is provided, including a lens barrel and a lens, the lens barrel includes a top wall with a light hole and a tube wall bent and extended from the edge of the top wall, the top wall is connected with the tube wall And enclosed to form a cavity;

The lens is accommodated in the cavity, and the lens includes an optical part for imaging and a connecting part arranged around the optical part. The connecting part includes a connecting object side surface and an image side surface and abuts against the tube A side surface of the wall, the barrel wall includes an abutting surface that abuts against the side surface;

The lens module is further provided with a glue-containing groove formed by a depression formed by at least one of the side surface and the abutting surface, and the connecting portion further includes a self-image side surface facing the object side surface. The glue injection hole communicating with the glue container.

Optionally, the abutting surface is recessed in a direction away from the side surface to form a first glue containing groove, the side surface is recessed in a direction away from the abutting surface to form a second glue containing groove, and the first A glue containing groove communicates with the second glue containing groove to form the glue containing groove, and the glue injection hole is connected with the second glue containing groove.

Optionally, at least one of the first glue containing groove and the second glue containing groove is an annular groove.

Optionally, the inner wall of the first glue holding tank includes a first connecting surface and a second connecting surface sequentially arranged in a direction from the object side to the image side, and the first connecting surface is opposite to the second connecting surface It is provided that the first connection surface is inclined from the object side to the image side and away from the optical axis, and the second connection surface is inclined from the object side to the image side and close to the optical axis.

Optionally, the inner wall of the first glue container further includes a first top surface, the first top surface is located between the first connection surface and the second connection surface, and the first top surface Parallel to the optical axis.

Optionally, the inner wall of the second glue holding tank includes a third connecting surface and a fourth connecting surface arranged in a direction from the object side to the image side, and the third connecting surface is opposite to the fourth connecting surface. The third connection surface is inclined from the object side to the image side and close to the optical axis, and the fourth connection surface is inclined from the object side to the image side and away from the optical axis.

Optionally, the inner wall of the second glue containing groove further includes a second top surface, the second top surface is located between the third connection surface and the fourth connection surface, and the second top surface Parallel to the optical axis.

Optionally, the axis of the glue injection hole is a straight line.

Optionally, the glue injection hole extends obliquely from the image side surface of the connecting portion toward the object side surface and away from the optical axis.

Optionally, the lens is a plurality of lenses, the lens includes a first lens, a second lens, a third lens, and a fourth lens arranged in sequence from the object side to the image side. The fourth lens.

Beneficial effect

The beneficial effect of the present application lies in that the above-mentioned lens module is provided with a glue container and a glue injection hole, so that glue can be injected into the glue container from the glue hole to connect the lens with the lens barrel. When the glue container is filled with glue, the excess glue can be contained in the glue injection hole to prevent the glue from overflowing to the optical part of the lens and affecting the imaging of the lens module. Moreover, by providing a glue container, the contact area between the glue and at least one of the lens barrel and the lens can be increased, so that the connection between the lens barrel and the lens is more reliable, thereby improving the imaging of the lens module and the electronic device using the lens module quality.

Description of the drawings

FIG. 1 is a cross-sectional view of a lens module according to an embodiment of the application;

2 is a schematic diagram of the structure of the fourth lens in FIG. 1;

3 is a schematic diagram of the structure of the lens barrel in FIG. 1;

Figure 4 is a partial enlarged view of A in Figure 1;

FIG. 5 is a schematic diagram of the structure in FIG. 4 when it is filled with glue.

The reference signs in the specification are as follows:

10. Lens module; 101. Glue container;

100. Lens barrel; 110, top wall; 111, light hole; 120, barrel wall; 121, inner surface; 1211, abutment surface; 122, outer surface; 123, first glue tank; 1231, first connection Surface; 1232, the first bottom surface; 1233, the second connecting surface;

210, optical part; 220, connecting part; 221, object side; 222, image side; 223, side surface; 224, second glue container; 2241, third connecting surface; 2242, second bottom surface; 2243, fourth Connecting surface; 225, injection hole; 201, first lens; 202, second lens; 203, third lens; 204, fourth lens;

300. Optical axis.

Embodiments of the invention

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

As shown in FIG. 1, an embodiment of the present application provides a lens module 10 applied to an electronic device. The lens module 10 includes a lens barrel 100 and lenses. The lens barrel 100 includes a top wall 110 with a light-passing hole 111 and a barrel wall 120 bent and extended from the top wall 110. The top wall 110 and the barrel wall 120 are connected and enclosed to form a cavity, and the lens is accommodated in the cavity.

As shown in FIG. 1, the number of lenses is four, including a first lens 201, a second lens 202, a third lens 203, and a fourth lens 204 that are sequentially housed in the cavity from the object side to the image side. Understandably, in other embodiments, the number of lenses can also be changed according to actual needs.

2 and 3 together, the fourth lens 204 includes an optical portion 210 for imaging and a connecting portion 220 disposed around the optical portion 210. The connecting portion 220 includes an object side surface 221 and an image side surface 222 oppositely disposed, and a side surface 223 connecting the object side surface 221 and the image side surface 222. The barrel wall 120 includes an inner surface 121 and an outer surface 122 oppositely disposed, and the inner surface 121 includes an abutting surface 1211 that abuts against the side surface 223, and the abutting surface 1211 is recessed in a direction away from the side surface 223 to form a first plastic container The side surface 223 of the groove 123 is recessed away from the contact surface 1211 to form a second glue-containing groove 224.

Referring to FIG. 4 at the same time, the first glue containing groove 123 communicates with the second glue containing groove 224 to form the glue containing groove 101. The image side 222 is also provided with a glue injection hole 225, and the glue injection hole 225 is in communication with the second glue container 224, so that glue can be injected from the glue hole 225 into the first glue container 123 and the second glue container 224.的胶容槽101。 In the glue tank 101. In other embodiments, the glue injection hole 225 can also directly communicate with the first glue containing groove 123 and communicate with the second glue containing groove 224 through the first glue containing groove 123.

Understandably, in other embodiments, the glue containing groove 101 may also be formed only by the abutment surface 1211 or the side surface 223 recessed, that is, the glue is only filled in the first glue containing groove 123 or the second glue containing groove 224.

In this embodiment, the first glue containing groove 123 and the second glue containing groove 224 are both annular grooves. During assembly, by injecting glue into the glue injection hole 225, the glue can be filled into the first glue container 123 and the second glue container 224 to connect the fourth lens 204 to the lens barrel 100. 5 together, when the first glue container 123 and the second glue container 224 are filled with glue, the excess glue can be contained in the glue injection hole 225 to prevent the glue from overflowing to the optics of the fourth lens 204 The part 210 affects the imaging of the lens module 10. Moreover, by providing the first glue containing groove 123 and the second glue containing groove 224, the contact area of the glue with the lens barrel 100 and the fourth lens 204 can be increased to enhance the stability of the lens module 10, thereby improving the lens module 10 And the imaging quality of the electronic equipment using the lens module 10.

In other embodiments, one of the first glue containing groove 123 or the second glue containing groove 224 may also be a plurality of grooves spaced around the optical axis 300. When the second glue containing groove 224 is a plurality of grooves arranged at intervals around the optical axis 300, the glue injection hole 225 may also be provided with multiple, and the number of the glue holes 225 is the same as the groove forming the second glue containing groove 224 The number is the same, and each injection hole 225 corresponds to each groove.

During assembly, glue can be injected into multiple glue injection holes 225 at the same time to improve assembly efficiency and ensure that each groove forming the second glue container 224 is filled with glue. Of course, the number of glue injection holes 225 can also be only one. At this time, the glue is injected from the glue injection hole 225 and flows into the first glue container 123 from the groove corresponding to the glue injection hole 225. When the first glue container 123 is filled with glue, the glue can be filled into the remaining grooves, and the excess glue can be contained in the glue injection hole 225.

Understandably, in other embodiments, the second glue containing groove 224 may be an annular groove, and the first glue containing groove 123 may be a plurality of grooves arranged around the optical axis 300. Alternatively, the first glue containing groove 123 and the second glue containing groove 224 are both a plurality of grooves arranged at intervals around the optical axis 300. At this time, the number of grooves forming the first glue containing groove 123 is the same as the number of grooves forming the second glue containing groove 224, and each groove forming the first glue containing groove 123 corresponds to each groove forming the second glue The groove of the glue groove 224. Moreover, there are also multiple glue injection holes 225, and the number of glue injection holes 225 is the same as the number of grooves forming the second glue container 224. Each glue hole 225 corresponds to each second glue container. The groove of the groove 224. When assembling, the multiple glue holes 225 need to be injected with glue. The glue flows from the glue holes 225 into the grooves forming the first glue container 123 and the grooves forming the second glue container 224, so as The lens 204 and the lens barrel 100 are connected by glue.

Further, in this embodiment, referring mainly to FIG. 4, the first glue-containing groove 123 includes a first connecting surface 1231, a first bottom surface 1232, and a second connecting surface 1233 that are sequentially connected in the direction from the object side to the image side. Both the first connecting surface 1231 and the second connecting surface 1233 are connected to the contact surface 1211. In the direction from the object side to the image side, the first connection surface 1231 is inclined in a direction away from the optical axis 300, and the second connection surface 1233 is inclined in a direction closer to the optical axis 300.

The second glue container 224 includes a third connection surface 2241, a second bottom surface 2242, and a fourth connection surface 2243 that are sequentially connected in the direction from the object side to the image side, and the third connection surface 2241 and the fourth connection surface 2243 are both connected to The side surfaces 223 are connected. In the direction from the object side to the image side, the third connection surface 2241 is inclined toward the optical axis 300, and the fourth connection surface 2243 is inclined toward the direction away from the optical axis 300. That is, the size of the entrance of the first glue container 123 is the largest, and the size of the exit of the second glue container 224 is the largest, so that the glue in the glue injection hole 225 can be quickly filled into the first glue container 123 and the second glue container 123. Inside the glue tank 224. Moreover, the inclined arrangement of the first connecting surface 1231 and the second connecting surface 1233 can not only ensure the contact area between the glue and the first glue container 123, but also ensure the strength of the lens barrel 100 to prevent the lens barrel 100 from increasing the first glue container. The contact area between 123 and the glue weakens the strength of the lens barrel 100 at the position of the first glue container 123. Similarly, the inclined arrangement of the third connecting surface 2241 and the fourth connecting surface 2243 can not only ensure the contact area of the glue and the second glue container 224, but also ensure the strength of the fourth lens 204.

Understandably, in other embodiments, the first bottom surface 1232 and the second bottom surface 2242 may also be eliminated. At this time, the first connection surface 1231 is directly connected to the second connection surface 1233, the third connection surface 2241 is directly connected to the fourth connection surface 2243, and the first glue containing groove 123 and the second glue containing groove 224 are both triangular grooves.

It is worth mentioning that, mainly referring to FIG. 4, the connection between the first connection surface 1231 and the first bottom surface 1232, the connection between the second connection surface 1233 and the first bottom surface 1232, and the connection between the third connection surface 2241 and the second bottom surface 2242 The connection, the connection between the fourth connection surface 2243 and the second bottom surface 2242, and the connection between the glue injection hole 225 and the second glue container 224 are all curved structures to avoid stress concentration affecting the lens barrel 100 and the fourth lens 204 strength.

In addition, in this embodiment, the axis of the glue injection hole 225 is a straight line to reduce processing difficulty. In addition, in the direction from the object side to the image side, the axis of the glue injection hole 225 is inclined toward the optical axis 300. In this way, the thickness of the structure between the inner wall of the injection hole 225 and the side surface 223 of the fourth lens 204 gradually becomes thicker from the object side to the image side, which can ensure the strength of the fourth lens 204 and extend the injection The length of the axis of the hole 225 increases the volume of the glue injection hole 225 and ensures that excess glue does not overflow from the glue injection hole 225.

In this embodiment, the glue injection hole 225 is a round hole. In other embodiments, the cross section of the glue hole 225 may also have other shapes, and the axis of the glue hole 225 may also be non-linear.

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 (10)

A lens module, characterized in that it comprises a lens barrel and a lens. The lens barrel includes a top wall with a light-passing hole and a tube wall bent and extended from the edge of the top wall. The cylinder wall is connected and enclosed to form a cavity; The lens is accommodated in the cavity, and the lens includes an optical part for imaging and a connecting part arranged around the optical part. The connecting part includes a connecting object side surface and an image side surface and abuts against the tube A side surface of the wall, the barrel wall includes an abutting surface that abuts against the side surface; The lens module is further provided with a glue-containing groove formed by a depression formed by at least one of the side surface and the abutting surface, and the connecting portion further includes a self-image side surface facing the object side surface. The glue injection hole communicating with the glue container. The lens module according to claim 1, wherein the abutting surface is recessed in a direction away from the side surface to form a first glue containing groove, and the side surface is recessed in a direction away from the abutting surface A second glue container is formed, the first glue container communicates with the second glue container to form the glue container, and the glue injection hole communicates with the second glue container. 3. The lens module according to claim 2, wherein at least one of the first glue containing groove and the second glue containing groove is an annular groove. The lens module according to claim 2, wherein the inner wall of the first glue container includes a first connecting surface and a second connecting surface arranged in sequence from the object side to the image side, and the first connecting surface A connecting surface is arranged opposite to the second connecting surface, the first connecting surface is inclined from the object side to the image side and away from the optical axis, and the second connecting surface is from the object side to the image side and close to the optical axis. The direction is inclined. 4. The lens module according to claim 4, wherein the inner wall of the first glue container further comprises a first top surface, and the first top surface is located on the first connecting surface and the second connecting surface. Between the surfaces, and the first top surface is parallel to the optical axis. The lens module according to claim 2, wherein the inner wall of the second glue container includes a third connection and a fourth connection that are sequentially arranged in a direction from the object side to the image side, and the third The connecting surface is disposed opposite to the fourth connecting surface, the third connecting surface is inclined from the object side to the image side and close to the optical axis, and the fourth connecting surface is from the object side to the image side and away from the optical axis. tilt. The lens module according to claim 6, wherein the inner wall of the second glue container further comprises a second top surface, and the second top surface is located on the third connecting surface and the fourth connecting surface. And the second top surface is parallel to the optical axis. The lens module of claim 1, wherein the axis of the glue injection hole is a straight line. 8. The lens module of claim 8, wherein the glue injection hole extends obliquely from the image side surface of the connecting portion toward the object side surface and away from the optical axis. The lens module according to claim 2, wherein the lens is a plurality of lenses, and the lenses include a first lens, a second lens, a third lens, and a fourth lens arranged in sequence from the object side to the image side , The second glue containing groove is arranged on the fourth lens.