CN206523690U - Camera lens module - Google Patents

Abstract

The utility model discloses a lens module. The lens module includes a lens barrel and a lens group, the lens barrel includes a first barrel wall and a second barrel wall, the lens group includes at least a first lens, and the lens module also includes a fixing unit, the fixing unit The unit includes a ring-shaped shading sheet and a stopper, the stopper includes a first surface, a second surface, an outer surface and an inner surface, the first surface is a plane perpendicular to the optical axis, and the shading sheets are stacked on the first surface. The lens module provided by the utility model can not only prevent stray light, but also has low requirements for blocking and forming.

Description

Lens module

【Technical field】

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

【Background technique】

With the continuous development of science and technology, electronic devices are constantly developing toward intelligence. In addition to digital cameras, portable electronic devices such as tablet computers and mobile phones are also equipped with lens modules. In order to meet people's needs, higher requirements are placed on the image quality of objects captured by the lens module.

A lens module in the related art usually includes a plurality of optical lenses, together with a lens barrel, a shading sheet, a shading plate, and the like. The lens closest to the image side of the lens module with this structure is prone to stray light.

Therefore, it is necessary to provide a novel lens module.

【Content of utility model】

The purpose of the utility model is to provide a lens module that can prevent stray light and has low requirements for stopper forming.

The technical scheme of the utility model is as follows: a lens module, including a lens barrel and a lens group accommodated in the lens barrel, the lens barrel includes a first barrel wall and a lens extending from the first barrel wall The second cylinder wall, the lens group includes at least a first lens, and the lens module further includes a fixing unit arranged on the image side of the first lens and abutting against the first lens, and the fixing unit includes A ring-shaped shading sheet and a stopper, the stopper includes a first surface, a second surface opposite to the first surface, and an outer side and an inner side respectively connecting the first surface and the second surface , the first surface is a plane perpendicular to the optical axis.

Preferably, the outer surface abuts against the second cylinder wall.

Preferably, the first surface faces the object side, and the shading sheet is interposed between the first lens and the first surface.

Preferably, the outer surface is recessed from the second surface toward the first surface to form a recessed portion, and the recessed portion is surrounded by the second cylinder wall to form a dispensing groove.

Preferably, the glue dispensing groove is annular.

Preferably, the first surface faces the image side, and the stopper is interposed between the first lens and the light-shielding sheet.

Preferably, the shading sheet abuts against the second cylinder wall and forms a glue point structure with the second cylinder wall.

Preferably, the first lens includes an optical surface facing the image side and a peripheral surface extending from the periphery of the optical surface, and the orthographic projection of the inner ring surface of the light-shielding sheet on the first lens is located on the peripheral surface.

Preferably, the lens set further includes a spacer disposed on the object side of the first lens and at least one second lens disposed on a side of the spacer away from the first lens.

Compared with related technologies, the beneficial effect of the lens module provided by the utility model lies in:

A fixing unit for fixing the first lens is provided on the image side of the first lens, the fixing unit includes a ring-shaped shading sheet and a stopper, the stopper includes a first surface, and the The second surface opposite to the first surface and the outer side and inner side respectively connecting the first surface and the second surface, the first surface is a plane perpendicular to the optical axis, and the shading sheet is stacked on the the first surface and is closer to the optical axis than the stopper. It can not only prevent stray light, but also has low requirements on the molding of the stopper.

【Description of drawings】

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

FIG. 2 is a schematic structural diagram of a stopper of the lens module shown in FIG. 1;

Fig. 3 is a schematic structural diagram of Embodiment 2 of the lens module provided by the present invention;

FIG. 4 is a schematic structural diagram of a stopper of the lens module shown in FIG. 3 .

【detailed description】

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. the embodiment. 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 FIG. 1 and FIG. 2 , the lens module 100 includes a lens barrel 1 , a lens group 2 and a fixing unit 3 disposed in the lens barrel 1 .

The lens barrel 1 includes a first barrel wall 11 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 form a storage space 1A.

The lens set 2 includes a first lens 21, a spacer 23 disposed on the object side of the first lens 21, and at least one second lens 25 disposed on a side of the spacer 23 away from the first lens 21. , the fixing unit 3 is disposed on the image side of the first lens 21 and abuts against the first lens 21 . In the embodiment shown in Figure 1, the number of the second lenses 25 is five, and a light-shielding structure 27 is arranged between two adjacent second lenses 25, and the light-shielding structure 27 can be a light-shielding sheet, It can also be a visor or a combination of both.

The first lens 21 includes an optical surface 211 facing the image side and a peripheral surface 213 extending from a periphery of the optical surface 211 .

The fixing unit 3 includes a ring-shaped shading sheet 31 and a stopper 33 stacked on top of each other. The shading sheet 31 is closer to the optical axis than the stopper 33, and the inner ring surface of the shading sheet 31 is at the The orthographic projection on the first lens 21 is located on the peripheral surface 213 . In this embodiment, the stopper 33 is sandwiched between the first lens 21 and the light-shielding sheet 31, and the light-shielding sheet 31 abuts against the second tube wall 13 and is in contact with the second cylinder wall 13 The two cylinder walls 13 form a dispensing structure 3A. During assembly, the fixing unit 3 is fixed to the second barrel wall 13 by dispensing glue at the glue dispensing structure 3A, so that the first lens 21 is better fixed in the lens barrel 1 .

The stopper 33 includes a first surface 331 facing the image side, a second surface 333 opposite to the first surface 331, and an outer side surface 335 and an outer surface 335 respectively connecting the first surface 331 and the second surface 333. Inner side 336 . Wherein, the first surface 331 is a plane perpendicular to the optical axis and abuts against the shading sheet 31, the second surface 333 abuts against the peripheral surface 213, and the outer surface 335 abuts against the second The cylinder wall 13 abuts.

Embodiment two

Please refer to FIG. 3 and FIG. 4 , the lens module 200 includes a lens barrel 4 and a lens group 5 and a fixing unit 6 disposed in the lens barrel 4 .

The lens barrel 4 includes a first barrel wall 41 and a second barrel wall 43 bent and extended from the first barrel wall 41 . The first cylinder wall 41 and the second cylinder wall 43 form a storage space 4A.

The lens set 5 includes a first lens 51, a spacer 53 disposed on the object side of the first lens 51, and at least one second lens 55 disposed on a side of the spacer 53 away from the first lens 51. , the fixing unit 6 is disposed on the image side of the first lens 51 and abuts against the first lens 51 . In the embodiment shown in FIG. 3 , the number of the second lenses 55 is five, and a light-shielding structure 57 is arranged between two adjacent second lenses 55, and the light-shielding structure 57 can be a light-shielding sheet, It can also be a visor.

The first lens 51 includes an optical surface 511 facing the image side and a peripheral surface 513 extending from a periphery of the optical surface 511 .

The fixing unit 6 includes a ring-shaped shading sheet 61 and a stopper 63 stacked on top of each other. The shading sheet 61 is closer to the optical axis than the stopper 63, and the inner ring surface of the shading sheet 61 is at the The orthographic projection on the first lens 51 is located on the peripheral surface 513 . In this embodiment, the light-shielding sheet 61 is interposed between the first lens 51 and the stopper 63 .

The stopper 63 includes a first surface 631 facing the object side, a second surface 633 opposite to the first surface 631, and an outer surface 635 and an inner surface respectively connecting the first surface 631 and the second surface 633. Side 636. Wherein, the first surface 631 is in contact with the light shielding sheet 61 , and the outer surface 635 is in contact with the second tube wall 43 .

The outer surface 635 is recessed from the second surface 633 toward the first surface 631 to form a recess 637 , and the recess 637 and the second cylinder wall 43 form a dispensing groove 6A. During assembly, the fixing unit 6 is fixed to the second barrel wall 43 by dispensing glue at the glue dispensing groove 6A, so that the first lens 51 is better fixed in the lens barrel 4 . Compared with Embodiment 1, in this embodiment, the dispensing groove 6A is set as the recessed portion formed by recessing from the second surface 633 to the first surface 631 on the outer surface 635 637 is formed to surround the second cylinder wall 43 , which is beneficial to reduce the length of the second cylinder wall 43 .

Preferably, the glue dispensing groove 6A is annular.

The beneficial effects of the lens module provided by the utility model are:

A fixing unit for fixing the first lens is provided on the image side of the first lens, the fixing unit includes a ring-shaped shading sheet and a stopper, the stopper includes a first surface, and the The second surface opposite to the first surface and the outer side and inner side respectively connecting the first surface and the second surface, the first surface is a plane perpendicular to the optical axis, and the shading sheet is stacked on the the first surface and is closer to the optical axis than the stopper. Not only can stray light be prevented, but also the molding requirement of the stopper is low, the yield rate is improved, and the cost is saved.

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 (9)

1. A lens module, comprising a lens barrel and a lens group accommodated in the lens barrel, the lens barrel includes a first barrel wall and a second barrel wall bent and extended from the first barrel wall, the The lens group includes at least a first lens, and it is characterized in that: the lens module further includes a fixing unit arranged on the image side of the first lens and abutting against the first lens, and the fixing unit includes a ring Shaped shading sheet and stopper, the stopper includes a first surface, a second surface opposite to the first surface, and an outer side and an inner side respectively connecting the first surface and the second surface, so The first surface is a plane perpendicular to the optical axis. 2 . The lens module according to claim 1 , wherein the outer surface abuts against the second barrel wall. 3 . 3 . The lens module according to claim 2 , wherein the first surface faces the object side, and the light-shielding sheet is interposed between the first lens and the first surface. 4 . 4. The lens module according to claim 3, wherein the outer surface is recessed from the second surface toward the first surface to form a concave portion, and the concave portion is connected to the second tube The wall encloses to form a dispensing groove. 5 . The lens module according to claim 4 , wherein the glue dispensing groove is ring-shaped. 5 . 6 . The lens module according to claim 2 , wherein the first surface faces the image side, and the stopper is interposed between the first lens and the light-shielding sheet. 7 . 7 . The lens module according to claim 6 , wherein the shading sheet abuts against the second cylinder wall and forms a dispensing structure with the second cylinder wall. 8 . 8. The lens module according to any one of claims 1-7, wherein the first lens comprises an optical surface facing the image side and a peripheral surface extending from the periphery of the optical surface, so The orthographic projection of the inner annular surface of the shading sheet on the first lens is located on the peripheral surface. 9. The lens module according to claim 8, wherein the lens group further comprises a spacer disposed on the object side of the first lens and at least one piece disposed on the spacer away from the first lens. A second lens on one side of the lens.