CN209388014U - Lens module - Google Patents

Abstract

The utility model provides a lens module, which includes a lens barrel and a lens group accommodated in the lens barrel, the lens group includes a first lens, and the first lens includes a first optical part for imaging and Surrounding the first peripheral part of the first optical part, the first peripheral part includes a first surface close to the object side and a second surface close to the image side, the first peripheral part is embedded with a Shading layer for stray light. Compared with the related art, the imaging quality of the lens module provided by the utility model is better.

Description

Lens module

【Technical field】

The utility model relates to the field of optical imaging, in particular to a lens module.

【Background technique】

In recent years, with the continuous development of science and technology, electronic devices are constantly developing towards intelligence. In addition to digital cameras, portable electronic devices such as tablet computers and mobile phones are also equipped with lens modules for camera and camera functions, as well as vehicles such as vehicles. It is also equipped with a lens module with camera and camera functions to meet the needs of users to take pictures at any time.

A lens module in the related art includes a lens barrel and a lens group accommodated in the lens barrel. The lens group usually includes one or more lenses arranged in sequence.

However, in the design of the small head structure with relatively thick lenses, stray light is often generated and affects the overall performance of the lens module. As shown in Figure 1, when external light passes through the lens 1, the light is refracted by the lens 1 and propagates repeatedly in the lens 1, forming multiple light paths, causing a lot of stray light to be generated in the lens module, shaping the imaging of the lens module The quality is poor.

Therefore, it is necessary to provide an improved lens module to solve the above problems.

【Content of utility model】

Aiming at the technical problem that the lens in the lens module in the related art tends to generate stray light, resulting in poor imaging quality of the lens module, the utility model provides a lens module that can effectively prevent the generation of stray light.

A lens module includes a lens barrel and a lens group accommodated in the lens barrel, the lens group includes a first lens, the first lens includes a first optical part for imaging and surrounds the first The first peripheral part of the optical part, the first peripheral part includes a first surface close to the object side and a second surface close to the image side, and a light shielding layer for blocking or absorbing stray light is embedded in the first peripheral part .

Preferably, the light-shielding layer is embedded in the first peripheral portion through injection molding process.

Preferably, the light shielding layer extends obliquely from the object side to the image side in a direction away from the optical axis.

Preferably, the light-shielding layer is spaced from the first surface, and the light-shielding layer is spaced from the second surface.

Preferably, the light-shielding layer is arranged on a side close to the first surface, and is in the shape of a planar ring.

Preferably, the light-shielding layer is made of blackened metal material.

Preferably, the lens module further includes at least one second lens disposed on the object side or the image side of the first lens.

Compared with the related technology, the lens module of the present utility model embeds the light-shielding layer in the first peripheral part of the first lens, and the light-shielding layer can effectively block the light, thereby preventing the light from Repeated propagation in the first lens effectively prevents stray light from being generated, thereby improving the imaging quality of the lens module.

【Description of drawings】

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some implementations of the present invention. For example, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative work, wherein:

Fig. 1 is a sectional view of a lens in the related art;

Fig. 2 is a sectional view of Embodiment 1 of the lens module provided by the present invention;

Fig. 3 is a partially enlarged view of area A shown in Fig. 2;

Fig. 4 is a cross-sectional view of Embodiment 2 of the lens module provided by the present invention;

FIG. 5 is a partially enlarged view of area B shown in FIG. 4 .

【Detailed ways】

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Embodiment one

Please refer to Figure 2 and Figure 3 together. This embodiment provides a lens module 100, which includes a lens barrel 10, a lens group 30 accommodated in the lens barrel 10, a shading plate 50 and a shading sheet 70, and the lens group 30 is fixed to the lens The pressure ring 90 inside the barrel 10.

The lens barrel 10 includes a first barrel wall 11 having a light hole and a second barrel wall 13 bent and extended from the first barrel wall 11 .

The first cylinder wall 11 and the second cylinder wall 13 jointly enclose to form a receiving space, and the receiving space is used for accommodating the lens group 30 , the light shielding plate 50 and the light shielding sheet 70 .

The lens set 30 is composed of a plurality of lenses, specifically, the lens set 30 includes a first lens 31 and a second lens 32 disposed on the image side of the first lens 31 .

In this embodiment, the second lens 32 is located on the image side of the first lens 31 . Of course, in other embodiments, the second lens 32 may be located on the object side of the first lens 31 .

The first lens 31 includes a lens body 311 and a light shielding layer 313 embedded in the lens body 311 for blocking or absorbing stray light.

The lens body 311 includes a first optical portion 3111 for concentrating light and serving as an imaging area, and a first peripheral portion 3113 extending around the first optical portion 3111 .

The first peripheral portion 3113 includes a first surface 3114 near the object side and a second surface 3115 near the image side.

The light shielding layer 313 is annular and located in the first peripheral portion 3113 . Specifically, the light-shielding layer 313 is embedded in the first peripheral portion 3113 through an injection molding process, and the light-shielding layer 313 extends obliquely from the object side to the image side in a direction away from the optical axis. The light shielding layer 313 is spaced apart from the first surface 3114 , and the light shielding layer 313 is spaced apart from the second surface 3115 .

In this embodiment, the light shielding layer 313 is located on a side of the first peripheral portion 3113 close to the first optical portion 3111 . Of course, in other embodiments, the light-shielding layer 313 can be located at any position in the lens body 311, and the light-shielding layer 313 can also be of any structure, as long as the light-shielding layer 313 can effectively protect light Blocking, so as to avoid stray light caused by repeated propagation of light in the first lens 31 .

The lens body 311 and the light-shielding layer 313 are formed into an integral structure through injection molding process, wherein the lens body 311 is a plastic structure, and the light-shielding layer 313 is made of blackened metal material.

It can be understood that the utility model can effectively prevent stray light by embedding the light-shielding layer 313 in the lens body 311, and at the same time, the metal material of the light-shielding layer 313 can also improve the performance of the first lens 31. The overall strength prevents the first lens 31 from being easily deformed, thereby improving the overall performance of the lens module 100 .

It should be noted that, the lens group 30 of the lens module 100 in this embodiment has a structure of five lenses, wherein the second lens from the object side to the image side is the first lens 31 . Of course, the lens module 100 of the present invention is not limited to the structure of five lenses, and the position of the first lens 31 is also not limited. For example, in other embodiments, the lens module 100 may have a structure of six lenses, or even more or less. Simultaneously, the third lens in the direction from the object side to the image side can also be the first lens 31, and even the second lens and the third lens in the direction from the object side to the image side are both the first lens 31, that is, both the second lens and the third lens include the light shielding layer 313. Just make adaptive changes according to actual needs. In this embodiment, the structure of five lenses and the second lens located in the direction from the object side to the image side are taken as the first lens 31 as an example for illustration.

The shading plate 50 is located between two adjacent lenses of the lens group 30. On the one hand, the shading plate 50 is used to block and absorb scattered light, and on the other hand, it is used to ensure the air gap between the two adjacent lenses and the stability of the assembly. sex.

The shading sheet 70 is located between two adjacent lenses of the lens set 30 for shielding and absorbing scattered light.

The pressure ring 90 is located in the direction of the image side of the lens group 30 and abuts against the lens group 30, and presses the lens group 30 into the lens barrel 10, thereby ensuring the stability of the lens module 100. stability.

Embodiment two

Please refer to Figure 4 and Figure 5 together. This embodiment provides a lens module 200 , which includes a lens barrel 110 and a lens group 130 accommodated in the lens barrel 110 .

The lens barrel 110 includes a first barrel wall 111 having a light hole and a second barrel wall 113 bent and extended from the first barrel wall 111 .

The first cylinder wall 111 and the second cylinder wall 113 jointly enclose and form a receiving space, and the receiving space is used to accommodate the lens group 130 .

The lens set 130 includes a first lens 131 and a second lens 133 . Wherein, the first lens 131 is located near the image side, and the second lens 133 is located near the object side.

The first lens 131 includes a lens body 1311 and a light shielding layer 1313 embedded in the lens body 1311 .

The lens body 1311 includes a first optical portion 1314 for concentrating light and serving as an imaging area, and a first peripheral portion 1315 extending around the first optical portion 1314 .

The first peripheral portion 1315 includes a first surface 1316 near the object side and a second surface 1317 near the image side.

The light-shielding layer 1313 has a planar ring shape, and the light-shielding layer 1313 is disposed on a side of the first peripheral portion 1315 close to the first surface 1316 .

The lens body 1311 and the light-shielding layer 1313 are molded into an integrated structure through injection molding process, wherein the lens body 1311 is a plastic structure.

It can be understood that by embedding the light-shielding layer 1313 in the lens body 1311 , the stray light generated by the lens can be solved. And embedding the light-shielding layer 1313 in the lens body 1311 can replace the light-shielding sheet between two adjacent lenses, thereby reducing the difficulty of assembling the lens module 200, so that the lens module 200 needs to be assembled The number of components is reduced, reducing assembly errors, thereby improving the stability of the lens module 200.

Compared with the related technology, the lens module of the present utility model embeds the light-shielding layer in the first peripheral part of the first lens, and the light-shielding layer can effectively block the light, thereby preventing the light from Repeated propagation in the first lens effectively prevents stray light from being generated, thereby improving the imaging quality of the lens module.

What has been described above is only the embodiment of the utility model, and it should be pointed out that for those of ordinary skill in the art, improvements can also be made without departing from the inventive concept of the utility model, but these all belong to Protection scope of the present utility model.

Claims (7)

1. a kind of lens module, including barrel and the lens set being contained in the barrel, the lens set includes first Eyeglass, first eyeglass include the first optical section for imaging and the first peripheral portion around first optical section, institute Stating the first peripheral portion includes the first surface close to object side and the second surface close to image side, which is characterized in that described first week Equipped with the light shield layer for stopping or absorbing stray light in edge.

2. lens module according to claim 1, which is characterized in that the light shield layer is embedded in by injection molding process In first peripheral portion.

3. lens module according to claim 2, which is characterized in that the light shield layer is from the lateral image side of object along far from light The direction of axis, which tilts, to be extended.

4. lens module according to claim 3, which is characterized in that the light shield layer is set with the first surface interval It sets, the light shield layer and the second surface interval are arranged.

5. lens module according to claim 2, which is characterized in that the light shield layer is provided close to the first surface Side is in flat annular.

6. lens module according to claim 1, which is characterized in that the light shield layer is the metal material by blackening process Matter.

7. lens module according to claim 1, which is characterized in that the lens module further includes being set to first mirror The object side of piece or at least one second eyeglass of image side.