CN211180368U - Lens module - Google Patents

Abstract

The utility model provides a lens module, including the lens barrel who has accommodating space with accept in lens group in the accommodating space. The lens group comprises a first lens positioned on the object side, wherein the first lens comprises an optical part for imaging and a bearing part arranged around the optical part. Wherein, the optical part at least partially protrudes out of the accommodating space. The bearing part comprises a top surface close to the object side, the optical part comprises an object side surface close to the object side and a side surface connecting the object side surface and the top surface, and the side surface and the top surface form a step structure to be abutted with the lens barrel. The lens module further comprises a shading sheet attached to the side surface. The utility model provides a lens module's super little head structure can satisfy user's demand, avoids using simultaneously scribbling black technology, and reduce cost improves the production yield.

Description

lens module

【Technical field】

The utility model relates to the technical 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, mobile phones, etc. are also equipped with camera lens modules, as well as vehicles such as vehicles. The camera is also equipped with a lens module with a camera function to meet the needs of users to take pictures at any time.

The lens module of the related art includes a lens barrel with a light-passing hole and a lens group accommodated in the lens barrel. In order for the lens barrel to be able to sufficiently support and fix the lens group and the molding thickness of the plastic lens barrel, the side wall of the lens barrel usually needs to reach a certain thickness. For the same imaging area and the same focal length, the larger the aperture of the end of the light-passing hole near the object side, the larger the spherical aberration, and the higher the difficulty and cost to correct. If a relatively small-diameter lens is made into a large-diameter with the same process and structure, its image quality will not be as good as a small-diameter lens. Sometimes, in order to meet the volume requirements of electronic equipment, it is necessary to make the lens module into an ultra-small head structure, while the compressed lens structure of the related art cannot achieve an ultra-small head structure, and the structure has great restrictions.

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

【Content of utility model】

The lens module of the current related art compresses the lens structure, cannot achieve an ultra-small head structure, and has large structural limitations. Therefore, the present invention provides an improved lens module.

A lens module includes a lens barrel with an accommodation space and a lens group accommodated in the accommodation space, the lens group includes a first lens on the object side, and the first lens includes an optical part for imaging and a carrying portion arranged around the optical portion, the optical portion is at least partially protruded from the outside of the receiving space, the carrying portion includes a top surface close to the object side, and the optical portion includes an object close to the object side The side surface and the side surface connecting the side surface of the object and the top surface, the side surface and the top surface form a stepped structure to abut the lens barrel, and the lens module further includes a side surface attached to the side surface. shading sheet.

Preferably, the light shielding sheet is in the shape of a hollow truncated cone.

Preferably, the side surface of the object is an arc surface, the side surface is an inclined surface, and the side surface extends obliquely from the top surface in a direction close to the optical axis.

Preferably, the arc surface is outwardly convex in a direction close to the object side.

Preferably, the outer diameter of the end of the lens barrel close to the object side is smaller than the outer diameter of the end close to the image side.

Preferably, the lens barrel includes an inner surface close to the optical axis, an outer surface disposed opposite the inner surface, and a bottom surface facing the image side and connecting the inner surface and the outer surface, wherein:

the inner surface is a stepped structure assembled with the lens group;

The outer surface includes a vertical surface extending vertically from the bottom surface along the optical axis direction, a horizontal surface extending horizontally from the vertical surface close to the optical axis direction, and an inclined surface extending from the horizontal surface toward the object side and close to the optical axis direction .

Compared with the related art, the lens module provided by the present invention at least partially protrudes from the outside of the receiving space by arranging the optical portion of the first lens, and at the same time, the side surface is close to the light from the top surface. The axial direction is inclined and extended, and the inclined surface of the lens barrel extends from the horizontal surface to the object side and close to the optical axis, forming a lens module with an ultra-small head structure, which meets the needs of some users, and at the same time avoids the use of ink coating process and reduces costs. Improve production yield. The lens module further includes a shading sheet attached to the side surface, which effectively reduces the problem of the lens halo of the lens module 100 .

【Description of drawings】

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are only some implementations of the present invention. For example, for those of ordinary skill in the art, under the premise of no creative work, other drawings can also be obtained from these drawings, wherein:

Fig. 1 is the sectional structure schematic diagram of the lens module shown in the utility model;

2 is an exploded view of the cross-sectional structure of the lens module shown in FIG. 1;

FIG. 3 is a detailed enlarged view of the area A of the lens module shown in FIG. 1 .

【Detailed ways】

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, but not all of them. Example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Please refer to FIG. 1 to FIG. 3 , FIG. 1 is a schematic cross-sectional structure diagram of the lens module 100 shown in the present invention, FIG. 2 is an exploded cross-sectional structure view of the lens module shown in FIG. 1 , and FIG. A detailed enlarged view of the A area of the lens module shown. The lens module 100 includes a lens barrel 10 having an accommodating space 17 , a lens group 30 accommodated in the accommodating space 17 , a shading sheet 50 , a pressure ring 70 and a shading member 90 .

The outer diameter of the end of the lens barrel 10 close to the object side is smaller than the outer diameter of the end close to the image side. The object side refers to the side of the lens barrel 10 close to the object when in use, and the image side refers to the side opposite to the object side. The lens barrel 10 includes an inner surface 11 close to the optical axis, an outer surface 13 opposite to the inner surface 11 , and a bottom surface 15 facing the image side and connecting the inner surface 11 and the outer surface 13 . The inner surface 11 encloses the receiving space 17 for receiving the lens group 30 . Preferably, the inner surface 11 is a stepped structure assembled with the lens group 30 , and the peripheral edge of the lens of the lens group 30 abuts on the inner surface 11 of the stepped structure to realize the fixing of the lens . The outer surface 13 includes a vertical surface 131 extending vertically from the bottom surface 15 along the optical axis direction, a horizontal surface 133 extending horizontally from the vertical surface 131 in the direction close to the optical axis, and a horizontal surface 133 facing the object side and It is close to the inclined surface 135 extending in the direction of the optical axis.

The lens group 30 includes a plurality of lenses. Specifically, in this embodiment, the lens group 30 has a total of five lenses, including a first lens 31 , a second lens 33 and a second lens arranged on the image side of the first lens 31 . The third lens 35 , the fourth lens 37 and the fifth lens 39 . Five lenses are closely arranged in the accommodating space 17 from the object side to the image side in a coaxial arrangement and form the lens group 30 . The arrangement of multiple lenses enables the lens module 100 to display more detailed images during imaging. The first lens 31 includes an optical part 311 for imaging and a bearing part 313 arranged around the optical part. The carrying portion 313 includes a top surface 3131 close to the object side, the optical portion 311 includes an object side surface 3111 close to the object side, and a side surface 3113 connecting the object side surface 3111 and the top surface 3131, the side surface 3113 A stepped structure is formed with the top surface 3131 to abut the lens barrel 10 . The object side surface 3111 is an arc surface. More specifically, the arc surface is convex toward the object side. The side surface 3113 is an inclined surface, and the side surface 3113 extends obliquely from the top surface 3131 to a direction close to the optical axis. In addition, the optical portion 311 is disposed at least partially protruding from the outer side of the receiving space 17 , so that the lens module 100 forms an ultra-small head structure to meet the needs of some users.

The lens module 100 further includes a light shielding sheet 50 attached to the optical portion 311 , and the light shielding sheet 50 is a hollow circular truncated structure. Specifically, the light shielding sheet 50 is attached to the side surface 3113 . Through the arrangement of the shading sheet 50, the optical portion 311 disposed at least partially protruding from the outer side of the receiving space 17 can avoid the interference of stray light, and effectively reduce the problem of the lens halo of the lens module 100. Improve image quality.

The pressing ring 70 is in contact with the lens group 30 at the end of the lens barrel 10 close to the image side, specifically abutting against the bottom of the fifth lens 39, so as to realize the fixation of the lens group 30, and further , the pressing ring 70 fixes the lens group 30 in the lens barrel 10 by dispensing glue.

The shading member 90 is a hollow annular structure, and the shading member 90 is arranged in a fit with the lens group 30 . There are multiple shading members 90 , and each shading member 90 is sandwiched between two adjacent lenses. . The light-shielding member 90 includes a light-shielding sheet 91 and a light-shielding plate 93. Specifically, in this embodiment, the light-shielding member 90 includes three light-shielding sheets 91 and a light-shielding plate 93, and the light-shielding sheets 91 are respectively disposed on the On the object side of the second lens 33 , the third lens 35 and the fourth lens 37 , the light blocking plate 93 is disposed between the fourth lens 37 and the fifth lens 39 . The light shielding member 90 is used for shielding stray light and improving the imaging quality of the lens module 100 .

Compared with the related art, the lens module 100 provided by the present invention is provided with the optical portion 311 of the first lens 31 at least partially protruding from the outside of the receiving space 15, and the side surface 3113 is The top surface 3131 extends obliquely in the direction close to the optical axis, and the inclined surface 135 of the lens barrel 10 extends from the horizontal surface 133 toward the object side and in the direction close to the optical axis, forming the lens module 100 with an ultra-small head structure, which meets the needs of some users , while avoiding the use of ink coating process, reducing costs and improving production yield. The lens module 100 further includes a shading sheet 50 attached to the side surface 3113 , which effectively reduces the problem of lens flare of the lens module 100 .

The above are only the embodiments of the present utility model. It should be pointed out that for those of ordinary skill in the art, improvements can be made without departing from the inventive concept of the present utility model, but these belong to The scope of protection of the utility model.

Claims (6)

1. A lens module, comprising a lens barrel with an accommodating space and a lens group accommodated in the accommodating space, the lens group comprising a first lens on the object side, wherein the first lens includes an optical part used for imaging and a carrying part arranged around the optical part, the optical part is at least partially protruded from the outer side of the receiving space, the carrying part includes a top surface close to the object side, the optical part Including an object side close to the object side and a side surface connecting the object side and the top surface, the side surface and the top surface form a step structure to abut the lens barrel, and the lens module further includes a sticker. A light shielding sheet provided on the side surface. 2 . The lens module according to claim 1 , wherein the light shielding sheet is in the shape of a hollow circular truncated cone. 3 . 3 . The lens module according to claim 1 , wherein the side surface of the object is an arc surface, the side surface is an inclined surface, and the side surface extends obliquely from the top surface in a direction close to the optical axis. 4 . 4 . The lens module according to claim 3 , wherein the arc surface is convex toward the object side. 5 . 5 . The lens module according to claim 1 , wherein the outer diameter of the end of the lens barrel close to the object side is smaller than the outer diameter of the end close to the image side. 6 . 6 . The lens module according to claim 5 , wherein the lens barrel comprises an inner surface close to the optical axis, an outer surface disposed opposite to the inner surface, and an inner surface facing the image side and connected to the inner surface. 7 . and the underside of the outer surface, where: the inner surface is a stepped structure assembled with the lens group; The outer surface includes a vertical surface extending vertically from the bottom surface along the optical axis direction, a horizontal surface extending horizontally from the vertical surface close to the optical axis direction, and an inclined surface extending from the horizontal surface toward the object side and close to the optical axis direction .

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