CN111077626A - Lens cone, lens module and assembling method thereof - Google Patents

Abstract

The invention relates to the technical field of optical lenses, and provides a lens cone, a lens module and an assembling method thereof, wherein the lens cone comprises the following steps: first section of thick bamboo wall with logical unthreaded hole and certainly first section of thick bamboo wall second section of thick bamboo wall that buckles to extend, first section of thick bamboo wall is including the outer wall that is close to the object side, set up the recess that is used for filling buffer gas on the outer wall, the lens cone is still including setting up gas plug spare in the recess, gas plug spare will buffer gas seals and exists the recess, gas plug spare can follow the optical axis for the lens cone motion. By applying the technical scheme, when the lens module is assembled, the impact received by the lens barrel can be absorbed by compressing the buffer gas, the deformation problem of the lens barrel in the assembling process is relieved, the mutual impact force between the lens barrel and the lens is weakened, the deformation of the lens assembly is relieved, the technical problem that the lens is easily subjected to overlarge impact to generate plastic deformation and even can crack when being serious is solved, and the assembling yield can be improved.

Description

Lens cone, lens module and assembling method thereof

[ technical field ] A method for producing a semiconductor device

The present invention relates to the field of optical lens technology, and in particular, to a lens barrel, a lens module and an assembling method thereof.

[ background of the invention ]

With the continuous development of science and technology, electronic equipment is continuously developing towards intellectualization, and besides a digital camera, portable electronic equipment such as a tablet personal computer, a mobile phone and the like is also provided with a lens module with a photographing and shooting function so as to meet the requirements of a user for photographing at any time. A lens module of the related art includes a lens barrel having a light-passing hole and a lens assembly accommodated in the lens barrel, and when the lens assembly is assembled and fixed in the lens barrel, an assembly impact force is generated and is completely absorbed by the lens assembly; because the strength of the lens assembly is low, the lens assembly is easy to generate plastic deformation under the action of overlarge assembling impact force, and the optical performance of the lens assembly is further influenced; in severe cases, the lens may even crack, resulting in a decrease in the yield of the lens module.

Therefore, it is necessary to provide a lens barrel.

[ summary of the invention ]

The invention aims to provide a lens barrel, a lens module and an assembling method thereof, which can absorb the impact on a lens when the lens module is assembled so as to solve the technical problems that the lens is easy to generate plastic deformation and even can crack when being seriously impacted.

The technical scheme of the invention is as follows:

the utility model provides a lens cone, its including have the first section of thick bamboo wall that leads to the unthreaded hole and certainly first section of thick bamboo wall second section of thick bamboo wall that extends of buckling, first section of thick bamboo wall is including the outer wall face that is close to the object side, offer the recess that is used for filling buffer gas on the outer wall face, the lens cone is still including setting up gas plug spare in the recess, gas plug spare will buffer gas seals up to be deposited in the recess, gas plug spare can follow the optical axis for the lens cone motion.

Further, the groove is annularly arranged around the light through hole.

Furthermore, the groove is arranged in a circular structure by taking the center of the light through hole as a circle center.

Further, the first cylinder wall and the second cylinder wall form an accommodating cavity for accommodating the lens, and the air plug part passes through the accommodating cavity along an orthographic projection line of the optical axis direction.

Further, an upper surface of the air blocking member is flush with the outer wall surface.

Further, a lens module includes the lens barrel and the lens accommodated in the lens barrel.

Further, the lens comprises an optical portion for imaging and a fixing portion extending around the optical portion, and the orthographic projection of the air plug in the optical axis direction is within the orthographic projection of the fixing portion in the optical axis direction.

Further, an assembling method of a lens module is provided, where the lens module is the above lens module, and the method includes:

s1, the supporting column of the assembly tool abuts against the air plug part to support the lens barrel;

s2, the lenses are sequentially arranged in the accommodating cavity of the lens barrel from the object side to the image side;

and S3, the supporting column compresses the buffer gas through the air plug piece to buffer the impact force in the installation process of the lens module.

The invention has the beneficial effects that: offer the recess on the roof sky face, fill buffer gas in the recess, and through the gas plug spare with buffer gas seal in the recess, when assembling the lens barrel, the optical axis can be followed to the gas plug spare and for the lens barrel motion, therefore the impact that the lens barrel received can be absorbed through compression buffer gas, and then weaken the mutual impact force between lens barrel and the lens subassembly, alleviate the lens subassembly and warp, it produces plastic deformation easily to have solved the lens and received too big impact, the technical problem of probably ftractureing even when serious, can improve the equipment yield simultaneously.

[ description of the drawings ]

Fig. 1 is a schematic structural diagram of a lens barrel according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a lens module according to an embodiment of the present invention;

fig. 3 is an assembly diagram of a lens barrel according to an embodiment of the invention.

[ detailed description ] embodiments

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The invention is further described with reference to the following figures and embodiments. Referring to fig. 1, a lens barrel 10 includes: the lens barrel 10 includes a first barrel wall 11 having a light passing hole 11a and a second barrel wall 12 extending from the first barrel wall 11 in a bending manner, the first barrel wall 11 includes an outer wall surface 111 close to the object side, the outer wall surface 111 is provided with a groove 111a for filling buffer gas, the lens barrel 10 further includes a gas plug 30 disposed in the groove 111a, the buffer gas is sealed in the groove 111a by the gas plug 30, and the gas plug 30 can move relative to the lens barrel 10 along the optical axis.

In the invention, the groove 111a is formed on the outer wall surface 111, the buffer gas is filled in the groove 111a, and the buffer gas is sealed in the groove 111a through the air plug piece 30, when the lens module is assembled, because the air plug piece 30 can move relative to the lens barrel 10 along the optical axis, the impact on the lens barrel 10 can be absorbed by the buffer gas compressed by the air plug piece 30, so that the mutual impact between the lens barrel 10 and the lens 20 is weakened, the problem of deformation of the lens barrel in the assembling process is relieved, the deformation of the lens 20 is relieved, the technical problems that the lens 20 is easy to generate plastic deformation and even cracks in severe cases due to overlarge impact are solved, and the assembling yield can be improved.

Further, the groove 111a is annularly disposed around the light passing hole 11a, and the groove 111a is annularly disposed so as to circumferentially surround the light passing hole 11a, so that the impact on the lens 20 can be absorbed uniformly in a wide range.

Preferably, the groove 111a is arranged in a circular structure with the center of the light-passing hole 11a as the center, which means that the distance between any groove segment of the groove 111a and the light-passing hole 11a is equal, that is, the assembly impact force absorbed by any groove segment of the groove 111a is the same, further ensuring that the groove 111a can uniformly absorb the impact applied to the lens 20, and ensuring that the lens 20 is not deformed or even cracked due to too much impact.

Further, the first cylinder wall 11 and the second cylinder wall 12 enclose an accommodation chamber 10a for accommodating the lens 20, and an orthographic projection line of the air lock member 30 in the optical axis direction passes through the accommodation chamber 10 a. The accommodating cavity 10a of the lens barrel 10 is formed by enclosing the first cylinder wall 11 and the second cylinder wall 12 together, the lens 20 is disposed in the accommodating cavity 10a, and the air lock 30 is disposed such that the orthographic projection line of the air lock in the optical axis direction passes through the accommodating cavity 10a, so that the impact of the lens 20 on the accommodating cavity 10a during the assembly of the lens module can be better absorbed. Further, the upper surface of the air plug 30 is flush with the outer wall surface 111 to maintain the aesthetic property of the lens barrel 10, and to ensure that the assembly process of the lens module is not affected by the mistaken collision caused by the unevenness of the outer wall surface 111 during the assembly process.

In the technical scheme, a groove 111a is formed in the outer wall surface 111 of the lens barrel 10, the shape and the position of the groove 111a are set, and then the buffer gas is sealed in the groove 111a through the gas plug 30. When the lens module is assembled, the impact on the lens 20 can be effectively and uniformly absorbed by the buffer gas in the groove 111a, so as to solve the problem that the lens 20 is deformed due to the assembling impact.

Further, the present invention also provides a lens module, which comprises the lens barrel 10 and the lens 20 accommodated in the lens barrel 10, as shown in fig. 2,

in the accommodating cavity 10a of the lens barrel 10, a plurality of lenses 20 are sequentially arranged from the object side to the image side, each lens 20 comprises an optical portion 21 for imaging and a fixing portion 22 extending around the optical portion 21, and the orthogonal projection of the air plug 30 along the optical axis direction falls within the orthogonal projection of the fixing portion 22 along the optical axis direction, so that the impact on the lens can be better absorbed, and the lens is not deformed. The lens 20 is fixed in the lens barrel 10 by the fixing portion 22, that is, the assembling impact on the lens 20 is basically borne by the fixing portion 22, and by further limiting the position of the air plug 30, the orthographic projection of the air plug 30 along the optical axis direction is overlapped with the orthographic projection of the fixing portion 22 along the optical axis direction, so that the buffering air in the groove 111a can directly and effectively absorb the assembling impact on the fixing portion 22.

The invention also provides an assembling method of the lens module, which comprises the following steps:

s1, the supporting column 40 of the assembly tool abuts against the air plug 30 to support the lens barrel 10;

s2, the lens 20 is sequentially installed in the containing cavity 10a of the lens barrel 10 from the object side to the image side;

and S3, the supporting column 40 compresses the buffer gas through the gas plug 30 to buffer the impact force in the installation process of the lens module.

When assembling the lens module, the support column 40 of the assembly tool is first abutted against the air plug 30 to support the lens barrel 10, and finally the plurality of lenses 20 are sequentially accommodated in the accommodating cavity 10a of the lens barrel 10 from the object side to the image side. Because the grooves 111a are filled with the buffer gas, when the lens 20 is assembled, the air plug 30 can move relative to the lens barrel 10 along the optical axis, and compress the buffer gas to absorb the impact force applied to the lens barrel 10 during assembly, thereby weakening the mutual impact force between the lens barrel 10 and the lens 20, alleviating the deformation of the lens 20, and improving the assembly yield of the lens module.

While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.

Claims (8)

1. The utility model provides a lens cone, its including have the first section of thick bamboo wall that leads to the unthreaded hole and certainly first section of thick bamboo wall second section of thick bamboo wall that extends of buckling, first section of thick bamboo wall is including the outer wall surface that is close to the object side, its characterized in that, offer the recess that is used for filling buffer gas on the outer wall surface, the lens cone is still including setting up the gas stopper spare in the recess, the gas stopper spare will buffer gas seals up and is deposited in the recess, the gas stopper spare can be followed the optical axis and for the lens cone motion.

2. The lens barrel according to claim 1, wherein the groove is annularly provided around the light passing hole.

3. The lens barrel according to claim 2, wherein the grooves are arranged in a circular configuration with a center of the light passing hole as a center.

4. The lens barrel according to claim 3, wherein the first barrel wall and the second barrel wall enclose an accommodation chamber for accommodating a lens, and the air lock member passes through the accommodation chamber along an orthographic projection line in the optical axis direction.

5. The lens barrel according to claim 1, wherein an upper surface of the air stopper is flush with the outer wall surface.

6. A lens module, characterized in that the lens module comprises the lens barrel according to any one of claims 1 to 5 and a lens accommodated in the lens barrel.

7. The lens module as recited in claim 6, wherein the lens includes an optical portion for imaging and a fixing portion extending around the optical portion, and an orthogonal projection of the air plug in the optical axis direction falls within an orthogonal projection of the fixing portion in the optical axis direction.

8. A method for assembling a lens module according to claim 6 or 7, comprising:

s1, the supporting column of the assembly tool abuts against the air plug part to support the lens barrel;

s2, the lenses are sequentially arranged in the accommodating cavity of the lens barrel from the object side to the image side;

and S3, the supporting column compresses the buffer gas through the air plug piece to buffer the impact force in the installation process of the lens module.

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