CN214751249U

CN214751249U - Anti-astigmatism lens barrel

Info

Publication number: CN214751249U
Application number: CN202120038380.3U
Authority: CN
Inventors: 林海生
Original assignee: Xiamen Lianjin Electrothermal End Needle Co ltd
Current assignee: Xiamen Lianjin Electrothermal End Needle Co ltd
Priority date: 2021-01-07
Filing date: 2021-01-07
Publication date: 2021-11-16
Anticipated expiration: 2031-01-07

Abstract

The utility model discloses an anti-astigmatism lens barrel, wherein the lens comprises a lens group, a lens barrel, an annular retainer ring and a front lens; the lens group is arranged in the center of the lens barrel, and a light guide channel is arranged on the inner side of the lens barrel; the right end of the light guide channel is embedded with a front lens, the light guide channel is horn-shaped, and a plurality of groups of annular grooves are formed in the inner wall of the light guide channel; the inner wall of the light guide channel is coated with light absorption materials; the lens cone and the light guide channel are of an integrally formed structure, and an annular retainer ring is arranged between lenses of the lens group; the inner wall of the lens cone of the utility model is coated with light absorbing material; stray light introduced from the outside and generated by the lens group is absorbed, and glare can be effectively prevented; the surfaces of the annular retainer ring and the annular bracket are coated with light absorbing materials; multiple reflections of incident light rays between the lens groups are blocked, ghost images can be greatly inhibited, and the stray light inhibiting capability is greatly improved.

Description

Anti-astigmatism lens barrel

Technical Field

The utility model relates to a camera lens technical field specifically is an anti-astigmatism lens barrel.

Background

With the continuous development of science and technology, electronic equipment is continuously developing towards the intelligentization direction, and besides a digital camera, portable electronic equipment such as a tablet personal computer, a mobile phone and the like are also provided with a lens module; in order to meet the use requirements of people, higher requirements are also put on the image quality of an object shot by the lens module.

A lens module in the related art generally includes a plurality of optical lenses, and is configured by matching with a lens barrel, a light shielding sheet, a light shielding plate, and the like; the lens module with such a structure is easy to generate stray light on the lens closest to the image side, and therefore, a new type of anti-stray light lens is needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a simple to operate, rational in infrastructure prevent astigmatic lens barrel to overcome prior art's weak point.

In order to achieve the above object, the utility model provides a following technical scheme:

an anti-astigmatism lens barrel, wherein the lens comprises a lens group, a lens barrel, an annular retainer ring and a front lens; the lens group is arranged in the center of the lens barrel, and a light guide channel is arranged on the inner side of the lens barrel and is positioned on the right side of the lens group; the right end of the light guide channel is embedded with a front lens, the light guide channel is horn-shaped, a plurality of groups of annular grooves are arranged on the inner wall of the light guide channel, and the two annular grooves are adjacent together; the inner wall of the light guide channel is coated with light absorption materials; the lens cone and the light guide channel are of an integrally formed structure, and an annular retainer ring is arranged between the lenses of the lens group.

Preferably, the lens group is fixed at the center of the lens barrel through an annular bracket, and annular retainer rings are arranged between the lenses of the lens group; the surfaces of the annular retainer ring and the annular bracket are coated with carbon nanotube black body coatings.

Preferably, the annular groove is composed of a first surface, a second surface and a circular arc surface, the first surface of the annular groove is connected with the second surface of the adjacent annular groove, the width of the first surface is larger than that of the second surface, and the circular arc surface is arranged between the first surface and the second surface of the annular groove.

Preferably, an included angle between the first surface and the second surface is θ, and the included angle θ: theta is more than or equal to 30 degrees and less than or equal to 75 degrees.

Preferably, the first surface, the second surface and the arc surface are coated with light absorbing materials, and the light absorbing materials are carbon nanotube black body coatings.

Compared with the prior art, the beneficial effects of the utility model are that:

the inner wall of the lens cone of the utility model is provided with an annular groove and is coated with light absorbing materials; stray light introduced from the outside and generated by the lens group is absorbed, and glare can be effectively prevented; an included angle is formed between the first surface and the second surface of the annular groove, an annular retainer ring is arranged between lenses of the lens group, and light absorbing materials are coated on the surfaces of the annular retainer ring and the annular support; multiple reflections of incident light rays between the lens groups are blocked, ghost images can be greatly inhibited, and the stray light inhibiting capability is greatly improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of the internal structure of the lens barrel of the present invention.

Fig. 2 is an enlarged schematic view of the structure at a position a of the present invention.

Fig. 3 is an enlarged schematic view of the structure at the position B of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1-lens cone, 2-lens group, 3-annular support, 4-annular retainer ring, 5-light guide channel, 6-front lens, 51-second surface, 52-first surface, 53-circular arc surface and 54-annular groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution:

an anti-astigmatism lens barrel comprises a lens group 2, a lens barrel 1, an annular retainer ring 4 and a front lens 6; the lens group 2 is arranged in the center of the lens barrel 1, and a light guide channel 5 is arranged on the inner side of the lens barrel 1 and is positioned on the right side of the lens group 2; a front lens 6 is embedded into the right end of the light guide channel 5, the light guide channel 5 is horn-shaped, a plurality of groups of annular grooves 54 are formed in the inner wall of the light guide channel 5, and the two annular grooves 54 are adjacent to each other; the inner wall of the light guide channel 5 is coated with light absorption materials; the lens barrel 1 and the light guide channel 5 are of an integrally formed structure, and an annular retainer ring 4 is arranged between the lenses of the lens group 2.

Preferably, the lens group 2 is fixed in the center of the lens barrel 1 through an annular bracket 3, and annular retainer rings 4 are arranged between the lenses of the lens group 2; the surfaces of the annular retainer ring 4 and the annular bracket 3 are coated with carbon nanotube black body coatings.

Preferably, the annular groove 54 is formed by a first surface 52, a second surface 51 and a circular arc surface 53, the first surface 52 of the annular groove 54 is connected with the second surface 51 of the adjacent annular groove 54, the width of the first surface 52 is larger than that of the second surface 51, and the circular arc surface 53 is arranged between the first surface 52 and the second surface 51 of the annular groove 54.

Preferably, the included angle between the first surface 52 and the second surface 51 is θ, and the included angle θ: theta is more than or equal to 30 degrees and less than or equal to 75 degrees.

Preferably, the first surface 52, the second surface 51 and the circular arc surface 53 are coated with light absorbing materials, and the light absorbing materials are carbon nanotube black body coatings.

In the present embodiment, light enters the lens barrel 1 from the light guide channel 5 of the lens barrel 1, and passes through the lens group 2 of the lens barrel 1; the scattered light of the light is absorbed by the light absorbing material of the annular groove on the inner wall; an annular groove 54 on the inner wall, wherein the included angle between the first surface 52 and the second surface 51 of the annular groove 54 is theta, and the theta is more than or equal to 30 degrees and less than or equal to 75 degrees; when the incident light is reflected by the lens, the incident light is absorbed by the light absorbing material of the second surface 51.

Wherein, the inner wall of the lens barrel 1 is provided with an annular groove 54 and is coated with light absorbing materials; stray light introduced from the outside and generated by the lens group 2 is absorbed, and glare can be effectively prevented; the first surface 52 of the annular groove 54 forms an angle with the second surface 51, and an annular retainer ring 4 is arranged between the lenses of the lens group 2, and the annular retainer ring 4 and the surface of the annular support 3 are coated with light-absorbing materials; multiple reflections of incident light rays between the lens group 2 are blocked, so that the generation of ghost images can be greatly inhibited, and the inhibition capability of stray light is greatly improved.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides an anti-astigmatism lens barrel which characterized in that: the lens comprises a lens group (2), a lens barrel (1), an annular retainer ring (4) and a front lens (6); the lens group (2) is arranged in the center of the lens barrel (1), and a light guide channel (5) is arranged on the inner side of the lens barrel (1) and is positioned on the right side of the lens group (2); a front lens (6) is embedded and mounted at the right end of the light guide channel (5), the light guide channel (5) is trumpet-shaped, a plurality of groups of annular grooves (54) are formed in the inner wall of the light guide channel (5), and the two annular grooves (54) are adjacent to each other; the inner wall of the light guide channel (5) is coated with light absorption materials; the lens barrel (1) and the light guide channel (5) are of an integrally formed structure, and an annular retainer ring (4) is arranged between the lenses of the lens group (2).

2. The anti-astigmatism lens barrel of claim 1, wherein: the lens group (2) is fixed in the center of the lens barrel (1) through an annular bracket (3), and annular retainer rings (4) are arranged between the lenses of the lens group (2); the surfaces of the annular retainer ring (4) and the annular bracket (3) are coated with carbon nanotube black body coatings.

3. The anti-astigmatism lens barrel of claim 1, wherein: the annular groove (54) is composed of a first surface (52), a second surface (51) and a circular arc surface (53), the first surface (52) of the annular groove (54) is connected with the second surface (51) of the adjacent annular groove (54), the width of the first surface (52) is larger than that of the second surface (51), and the circular arc surface (53) is arranged between the first surface (52) and the second surface (51) of the annular groove (54).

4. The anti-astigmatism lens barrel of claim 3, wherein: the first surface (52) and the second surface (51) form an angle theta, and the included angle theta is as follows: theta is more than or equal to 30 degrees and less than or equal to 75 degrees.

5. The anti-astigmatism lens barrel of claim 3, wherein: the first surface (52), the second surface (51) and the arc surface (53) are coated with light absorbing materials, and the light absorbing materials are carbon nanotube black body coatings.