CN210123494U - Lens barrel - Google Patents

Abstract

The application provides a lens, this lens includes: the lens cone comprises a lens cone body and an accommodating cavity positioned in the lens cone body, wherein the lens cone body is provided with an outer end and an inner end in the axial direction of the lens cone, the accommodating cavity comprises a first accommodating cavity and a second accommodating cavity, and the first accommodating cavity is closer to the outer end of the lens cone body relative to the second accommodating cavity in the axial direction of the lens cone; the lens, the lens is a plurality of, and at least one side cut lens is located in first holding chamber in a plurality of lenses including at least one side cut lens. In the lens, the trimming lens is arranged in the first accommodating cavity close to the outer end, the size of the trimming lens is smaller than that of a conventional lens, so that under the condition of the same optical design, the caliber of the lens at the outer end of the lens can be reduced by 10% -25%, when the lens is applied to electronic equipment such as a mobile phone, the size occupied by the lens in a screen of the electronic equipment such as the mobile phone can be reduced, and the screen occupation ratio of the screen of the electronic equipment such as the mobile phone is increased.

Description

Lens barrel

Technical Field

The application relates to the field of lenses, in particular to a lens.

Background

Under the background of the rise of the full-screen mobile phone, firstly, a relatively wide bang screen is used, then a smaller water drop screen is used, and then only a small circle of hole digging screen in the screen is left, so that the process of gradually approaching the ultimate full-screen is realized. The front side of these components becomes a stumbling block in front of the full screen, and manufacturers choose to implement the full screen by compressing the top component mounting space, and therefore, it becomes more important to reduce the size of the imaging lens.

The main structure of the mobile phone lens in the market comprises a lens barrel and a lens group arranged in the lens. The lens is discoid revolution mechanic, and the lens cone inside wall that corresponds is circular through-hole column structure, and such structure size is great for electronic equipment such as cell-phone is difficult to realize the full face screen, and influences electronic equipment's outward appearance aesthetic feeling.

The above information disclosed in this background section is only for enhancement of understanding of the background of the technology described herein and, therefore, certain information may be included in the background that does not form the prior art that is already known in this country to a person of ordinary skill in the art.

SUMMERY OF THE UTILITY MODEL

The main objective of the present application is to provide a lens, so as to solve the problem of large size of the lens in the prior art.

In order to achieve the above object, a lens barrel according to the present application includes: the lens cone comprises a lens cone body and an accommodating cavity positioned in the lens cone body, wherein the lens cone body is provided with an outer end and an inner end in the axial direction of the lens cone, the accommodating cavity comprises a first accommodating cavity and a second accommodating cavity, and the first accommodating cavity is closer to the outer end of the lens cone body relative to the second accommodating cavity in the axial direction of the lens cone; a plurality of lenses, wherein at least one of the plurality of lenses comprises a edged lens, and at least one of the edged lenses is located in the first receiving cavity.

Further, the side cut lens include the lens portion and with the installation department that lens portion is connected, the installation department is located the periphery of lens portion and be used for with lens portion installs in first holding in the chamber, keeping away from of installation department the surface of lens portion includes at least one longitudinal plane.

Further, the surface of the mounting portion away from the lens portion includes two longitudinal sections, two of which are symmetrical with respect to the optical center of the edged lens.

Further, the distance between the longitudinal section and the optical center of the edged lens is greater than the radius of the lens portion and less than the radius of the edged lens.

Further, an included angle between the longitudinal section and the central axis of the lens portion is greater than 0 ° and less than 90 °.

Further, a portion of the lens barrel body forming the first accommodating cavity is a first body portion, the first body portion includes a first barrel section, and an outer circumferential surface of the first barrel section includes at least one flat surface.

Further, the outer peripheral surface of the first cylinder section comprises two planes and two identical first cambered surfaces, the two planes are symmetrically arranged about the central axis of the lens barrel, and at least one plane is matched with one longitudinal section.

Further, the first body part further comprises a second cylinder section connected with the first cylinder section, the first cylinder section is located on one side, far away from the second containing cavity, of the second cylinder section, the outer peripheral surface of the second cylinder section comprises a second cambered surface, and the radius corresponding to the second cambered surface is larger than or equal to the radius corresponding to the first cambered surface.

Further, the first accommodating chamber comprises a first chamber section and a second chamber section which are sequentially connected in a direction close to the second accommodating chamber, wherein the cross-sectional area of the first chamber section is smaller than that of the second chamber section, and the mounting part is mounted in the second chamber section.

Further, a mounting gap is formed between the inner wall of the first body part and the mounting part.

Further, the lens also comprises a shading component, and the shading component is installed in the accommodating cavity.

Further, the lens part is an aspheric lens part.

According to another aspect of the present application, there is provided a camera module, comprising a lens barrel, wherein the lens barrel is any one of the lens barrels.

By the aid of the technical scheme, the trimming lenses are arranged in the first accommodating cavities close to the outer ends of the lenses, the size of each trimming lens is smaller than that of a conventional lens, so that the caliber of the outer-end lens of each lens can be reduced by 10% -25% under the condition of the same optical design, and when the trimming lenses are applied to electronic equipment such as a mobile phone, the size of the lenses in a screen of the electronic equipment such as the mobile phone can be reduced, so that the screen occupation ratio of the screen of the electronic equipment such as the mobile phone is increased. For example, in the case that the lens is applied to a mobile phone, the lens can reduce the sizes of "bang" and "water drops" of a mobile phone screen, so that the screen occupation ratio of the mobile phone screen is increased, and the attractiveness of the mobile phone is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:

fig. 1 shows a schematic structural diagram of an embodiment of a lens barrel according to the present application;

FIG. 2 shows a top view of a slice lens in the lens of FIG. 1;

FIG. 3 shows a side view of a slice lens in the lens of FIG. 1;

fig. 4 illustrates a perspective view of a lens barrel in the lens barrel of fig. 1;

fig. 5 shows a top view of the first body part of the lens barrel in fig. 4;

fig. 6 shows a front view of the lens barrel in fig. 1;

FIG. 7 shows a partial structural schematic of FIG. 6;

fig. 8 shows a schematic structural diagram of a lens of an embodiment of the present application; and

fig. 9 shows a schematic structural view of a lens barrel of a comparative example.

Wherein the figures include the following reference numerals:

10. a lens barrel; 11. a lens barrel body; 111. a first body portion; 112. a first barrel section; 113. a plane; 114. a first arc surface; 115. a second barrel section; 116. a second arc surface; 117. a first portion; 118. a second portion; 119. a third portion; 12. an accommodating chamber; 121. a first accommodating chamber; 122. a second accommodating chamber; 123. a first cavity section; 124. a second cavity section; 20. a lens; 21. trimming the lens; 211. a lens portion; 212. an installation part; 213. longitudinally cutting the surface; 30. a shading component.

Detailed Description

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.

It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. Also, in the specification and claims, when an element is described as being "connected" to another element, the element may be "directly connected" to the other element or "connected" to the other element through a third element.

As mentioned in the background art, the size of the lens in the prior art is large, which results in a small screen occupation of electronic devices such as mobile phones, and in order to solve the above technical problems, in an exemplary embodiment of the present application, a lens is provided.

In a first embodiment of the present application, a specific structure is shown in fig. 1 to 8, and the lens includes a lens barrel 10 and a lens 20, where the lens barrel 10 includes a lens barrel body 11 and an accommodating cavity 12 located in the lens barrel body 11, in an axial direction of the lens barrel 10, the lens barrel body 11 has an outer end and an inner end, the accommodating cavity 12 includes a first accommodating cavity 121 and a second accommodating cavity 122, and in the axial direction of the lens barrel 10, the first accommodating cavity 121 is closer to the outer end of the lens barrel body 11 than the second accommodating cavity 122; the number of the lenses 20 is plural, at least one edge-cutting lens 21 is included in the plural lenses 20, and at least one edge-cutting lens 21 is located in the first accommodating cavity 121.

In the lens, the trimming lens is arranged in the first accommodating cavity close to the outer end, and the size of the trimming lens is smaller than that of a conventional lens, so that under the condition of the same optical design, the caliber of the lens at the outer end of the lens can be reduced by 10% -25%, when the lens is applied to electronic equipment such as a mobile phone, the size occupied by the lens in a screen of the electronic equipment such as the mobile phone can be reduced, and the screen occupation ratio of the screen of the electronic equipment such as the mobile phone is increased. For example, in the case that the lens is applied to a mobile phone, the lens can reduce the sizes of "bang" and "water drops" of a mobile phone screen, so that the screen occupation ratio of the mobile phone screen is increased, and the attractiveness of the mobile phone is improved.

It should be noted that, in fact, the outer end of the lens barrel body is the end closer to the outside, and the inner end is the end away from the outside relative to the outer end, for example, in a specific application, the lens is a lens of a mobile phone, the outer end of the lens barrel body is the end visible to human eyes, and the inner end of the lens barrel body is the end disposed inside the mobile phone, that is, the end invisible to human eyes.

It should be noted that the number of the shear lenses in the present application may be one, or may be multiple, and one skilled in the art may set one or more edge cutting lenses in the lens barrel according to the actual situation. For a lens with a plurality of edge-cutting lenses, as long as one edge-cutting lens is arranged in the first accommodating cavity, other edge-cutting lenses can be arranged in the second accommodating cavity

In order to further reduce the outer end aperture of the lens barrel, in an embodiment of the present application, a distance between one of the edge-cut lenses and the outer end of the lens barrel body is the smallest, that is, one edge-cut lens is the first lens in a direction from the inner section of the lens barrel body to the outer end of the lens barrel body.

As shown in fig. 2, in the second embodiment of the present application, the edge-cut lens 21 includes a lens portion 211 and a mounting portion 212 connected to the lens portion 211, the mounting portion 212 is located at an outer periphery of the lens portion 211 and is used for mounting the lens portion 211 in the first receiving cavity 121, and a surface of the mounting portion 212, which is far away from the lens portion 211, includes at least one longitudinal section 213. The size of the mounting portion 212 is reduced by providing the longitudinal cut surface 213, thereby reducing the size of the edged lens 21. Moreover, the structure of the edge-cutting lens 21 increases the proportion of the area of the lens part 211 in the area of the whole edge-cutting lens 21, and improves the screen occupation ratio of the image.

As shown in fig. 2, in the third embodiment of the present application, the surface of the mounting portion 212 away from the lens portion 211 includes two longitudinal cut surfaces 213, and the two longitudinal cut surfaces 213 are symmetrical with respect to the optical center of the edge-cut lens 21. The size of the mount portion 212 is further reduced by providing two longitudinal cut surfaces 213 on the surface of the mount portion 212, which are symmetrical with respect to the optical center of the cut edge lens 21, and such a regularly shaped cut edge lens 21 facilitates the processing of the lens barrel body 11 to form the first accommodation chamber 121 matching the size thereof.

Of course, the two longitudinal facets of the present application are not limited to the symmetrical arrangement mode with respect to the optical center of the trimming lens, but may also be an asymmetrical arrangement mode, that is, the distance between the two longitudinal facets and the optical center of the trimming lens may be different, and as to which longitudinal facet is farther from the optical center of the trimming lens and which longitudinal facet is farther from the optical center of the trimming lens, the distance between the longitudinal facet and the optical center of the trimming lens may be adjusted according to actual situations. Assuming that the distance between one longitudinal section and the optical center of the edge-cut lens is L1, and the distance between the other longitudinal section and the optical center of the edge-cut lens is L2, for a scheme in which the two longitudinal sections are symmetric with respect to the optical center of the edge-cut lens, L1 is L2, and for a scheme in which the two longitudinal sections are asymmetric with respect to the optical center of the edge-cut lens, L1> L2, and L2> L1 may be used.

It should be noted that the lens with cut surfaces in the present application is not limited to include only two longitudinal cut surfaces, and may also be one longitudinal cut surface or more than two longitudinal cut surfaces, and those skilled in the art may select a cut-edge lens with an appropriate number of longitudinal cut surfaces according to actual situations. In addition, in the case where the trim lens includes two longitudinal cut surfaces, the positions of the two longitudinal cut surfaces are not limited to the positions on the left and right of the lens portion (determined as facing the paper surface or the screen) shown in fig. 1 and 2, and may be positions on the front and rear of the lens portion (determined as facing the paper surface or the screen).

In the fourth embodiment of the present application, as shown in fig. 2, the distance between the longitudinal section 213 and the optical center of the edged lens 21 is larger than the radius of the lens portion 211 and smaller than the radius of the edged lens 21. The above-described size arrangement makes it possible to reduce the size of the edged lens 21 while ensuring that the lens portion 211 is stably mounted on the mounting portion 212.

In order to facilitate the installation of the trimming lens, reduce the installation time of the trimming lens, and improve the installation efficiency of the trimming lens, as shown in fig. 3, in the fifth embodiment of the present application, the included angle between the longitudinal plane 213 and the central axis of the lens portion 211 is greater than 0 ° and less than 90 °. It should be noted that the included angle between the longitudinal section 213 and the central axis of the lens portion 211 is not specific, and is sufficient as long as the imaging is not affected.

In order to further reduce the outer end lens aperture of the lens, in a sixth embodiment of the present application, as shown in fig. 4, 5 and 6, a portion of the lens barrel body 11 forming the first accommodating cavity 121 is a first body portion 111, the first body portion 111 includes a first barrel section 112, and an outer peripheral surface of the first barrel section 112 includes at least one flat surface 113. The outer end lens aperture of the lens is further reduced by providing a flat surface 113 on the outer peripheral surface of the first barrel section 112.

It should be noted that the number of the planes in the outer peripheral surface of the first barrel section in the present application may be set according to actual situations, and may be one, two, three, or even four.

Of course, it should be further noted that, in the present application, at least part of the planes in the outer peripheral surface of the first barrel section may be adapted to the longitudinal section of at least part of the trimming lens, that is, the planes correspond to the longitudinal section in shape and the setting position, of course, not all the planes are adapted to the longitudinal section, and some planes may not be adapted to the longitudinal section, for example, in the case that the first barrel section includes three planes, the trimming lens includes two longitudinal sections, and two of the three planes in the outer peripheral surface of the first barrel section are adapted to the two longitudinal sections in one-to-one correspondence. For another example, in the case where the first barrel section includes three planes, the edge-cutting lens includes three longitudinal sections, and the two planes of the outer peripheral surface of the first barrel section are fitted in one-to-one correspondence with the two longitudinal sections.

In order to further reduce the outer end aperture of the lens, in a seventh embodiment of the present application, at least a part of the plane and at least a part of the longitudinal section are adapted in a one-to-one correspondence.

As shown in fig. 5, in the eighth embodiment of the present application, the outer circumferential surface of the first barrel section 112 includes two of the flat surfaces 113 and two of the same first arc surfaces 114, and the two flat surfaces 113 are symmetrically disposed about the central axis of the lens barrel 10. The size of the first barrel section 112 is further reduced by providing two planes 113 on the outer peripheral surface of the first barrel section 112, which are symmetrical with respect to the central axis of the lens barrel 10, and at least one of the planes 113 is fitted to one of the longitudinal cut surfaces 213.

It should be noted that the distances between the two planes and the central axis of the lens barrel may be the same or different, and may be set according to actual situations.

As shown in fig. 6 and 7, in a ninth embodiment of the present application, the first body portion 111 further includes a second cylinder segment 115 connected to the first cylinder segment 112, the first cylinder segment 112 is located on a side of the second cylinder segment 115 away from the second accommodating cavity 122, an outer peripheral surface of the second cylinder segment 115 includes a second arc surface 116, and a radius corresponding to the second arc surface 116 is greater than or equal to a radius corresponding to the first arc surface 114. On the basis of reducing the size of the outer end of the lens, the first body part further ensures that the strength of the lens barrel is high, and the use reliability of the lens is further ensured.

It should be noted that, in the structure of the first body portion 111, the radius corresponding to the second arc surface 116 may be greater than or equal to the radius corresponding to the first arc surface 114, and specifically, the size of the second barrel section 115 may be selected according to the size of the lens in the second accommodating cavity 122.

In a tenth embodiment of the present application, the second barrel section further includes an engagement surface connecting the second arc surface and the first arc surface, the engagement surface includes a first portion 117, a second portion 118, and a third portion 119 connected in sequence, where the first portion 117 is connected to the first arc surface 114, the third portion 119 is connected to the second arc surface 116, and a difference between a corresponding maximum diameter of the first portion 117 and a corresponding maximum diameter of the first arc surface 114 is a fleshiness difference F, F >0, as shown in fig. 7, so that the barrel has a fleshiness effect, and the size of the barrel cut edge can be increased to the maximum extent to reduce the size of the head (i.e., the outer end aperture) of the lens barrel while meeting the requirement of the barrel strength.

In the eleventh embodiment of the present application, the angle between the third portion 119 and the reference plane is γ, and γ >0, as shown in fig. 7, so that the wall thickness of the lens barrel head can be adjusted to ensure that the wall thickness can meet the strength requirement. Wherein, the reference plane is a plane perpendicular to the axial direction of the lens barrel.

Note that fig. 7 in the present application also shows a minimum wall thickness G of second barrel section 115, which is a minimum barrel thickness for ensuring barrel strength.

As shown in fig. 1, in a twelfth embodiment of the present invention, the first receiving chamber 121 includes a first chamber segment 123 and a second chamber segment 124 sequentially connected in a direction approaching the second receiving chamber 122, wherein a cross-sectional area of the first chamber segment 123 is smaller than a cross-sectional area of the second chamber segment 124, and the mounting portion 212 is mounted in the second chamber segment 124. In this structure, install the installation department of side cut camera lens in the second cavity section, compare the mode of installing in the second cavity section and can further reduce the bore of the outer end of camera lens like this to this kind of structure has better stability.

As shown in fig. 2, in the thirteenth embodiment of the present application, a mounting gap is formed between the inner wall of the first body portion 111 and the mounting portion 212. This mode of setting up is convenient for the installation and the dismantlement of side cut lens 21, can improve the installation effectiveness.

As shown in fig. 1, in a fourteenth embodiment of the present application, the lens barrel further includes a light shielding assembly 30, and the light shielding assembly 30 is installed in the accommodating chamber 12. By installing the light shielding component 30 in the accommodating cavity 12 at the inner end of the lens barrel body 11, the space of the first accommodating cavity 121 is not occupied, so that the outer end lens caliber of the lens can be reduced. The shading component can have the trimming characteristic, can also be the conventional shape of not trimming, as long as satisfy the equipment condition in principle, easy to assemble can.

The shading component of the present application may be any feasible shading component installed in a lens in the prior art, and those skilled in the art may select a shading component having a suitable structure and formed by a suitable material according to actual situations, which is not described herein again.

As shown in fig. 2, in a fifteenth embodiment of the present application, the lens portion 211 is an aspherical lens portion. The aspheric lens part can be better attached to the installation part with the longitudinal section, and the aspheric lens part can correct aberration compared with the spherical lens, so that the shooting quality is improved.

In a sixteenth embodiment of the present application, a camera module is further provided, which includes a lens, where the lens is any one of the lenses. The camera shooting assembly can be applied to electronic equipment such as a mobile phone and the like so as to reduce the size occupied by the lens in the screen of the electronic equipment and increase the screen occupation ratio of the screen.

In a seventeenth embodiment of the present application, there is further provided an electronic apparatus, which includes a camera module and a display screen, where the camera module is the camera module described above.

The electronic device can be a mobile phone, a PAD, a PC, and the like, and can be any electronic device to which the camera assembly can be mounted.

The electronic equipment comprises the camera shooting assembly, so that the screen of the display screen of the electronic equipment is relatively large.

In order to make the technical solutions and technical effects of the present application more clearly understood by those skilled in the art, the following description will be given with reference to specific examples and comparative examples.

Examples

The structure of the lens is shown in fig. 1 and 8, the lens includes a lens barrel 10 and a lens 20, and the specific structure thereof can be referred to the above description and shown in fig. 2 to 7, which is not repeated herein.

Comparative example

The structure of the lens barrel is shown in fig. 9, and the lens barrel is different from the lens barrel of the embodiment in that the lens does not include a trimming lens, and the lens barrel is adapted to the lens.

Comparing fig. 8 and fig. 9, it can be known that the outer end lens aperture of the lens in fig. 8 is N, which is smaller than the outer end lens aperture M of the lens in fig. 9, and the volume of the lens is reduced. Therefore, the lens with the trimming lens can reduce the occupied size of the lens and increase the screen occupation ratio of the screen of electronic equipment and the like.

From the above description, it can be seen that the above-described embodiments of the present application achieve the following technical effects:

1) in the technical scheme of this application, among the above-mentioned camera lens, be provided with the side cut lens in the first intracavity that holds that is close to the outer end, the size of side cut lens is less for the size of conventional lens, under the condition of same optical design, can reduce camera lens 10% -25%'s outer end camera lens bore like this, when it uses in electronic equipment such as cell-phone, can reduce the size that the camera lens accounts for in the screen of electronic equipment such as cell-phone to the screen of electronic equipment such as increase cell-phone accounts for the ratio. For example, in the case that the lens is applied to a mobile phone, the lens can reduce the sizes of "bang" and "water drops" of a mobile phone screen, so that the screen occupation ratio of the mobile phone screen is increased, and the attractiveness of the mobile phone is improved.

2) The camera shooting assembly can be applied to electronic equipment such as a mobile phone and the like to reduce the size occupied by the lens in the screen of the electronic equipment and increase the screen occupation ratio of the screen.

3) The electronic equipment comprises the camera shooting assembly, so that the screen of the display screen of the electronic equipment is relatively large.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A lens barrel characterized by comprising:

the lens barrel (10) comprises a lens barrel body (11) and an accommodating cavity (12) located in the lens barrel body (11), in the axial direction of the lens barrel (10), the lens barrel body (11) is provided with an outer end and an inner end, the accommodating cavity (12) comprises a first accommodating cavity (121) and a second accommodating cavity (122), and in the axial direction of the lens barrel (10), the first accommodating cavity (121) is closer to the outer end of the lens barrel body (11) than the second accommodating cavity (122);

a plurality of lenses (20), wherein the plurality of lenses (20) comprises at least one edged lens (21), and at least one edged lens (21) is located in the first receiving cavity (121).

2. Lens barrel according to claim 1, wherein the edged lens (21) comprises a lens part (211) and a mounting part (212) connected to the lens part (211), the mounting part (212) being located at the periphery of the lens part (211) and being used for mounting the lens part (211) in the first accommodation cavity (121), the surface of the mounting part (212) remote from the lens part (211) comprising at least one longitudinal cut (213).

3. A lens barrel according to claim 2, wherein the surface of the mount portion (212) remote from the lens portion (211) includes two of the longitudinal sections (213), the two longitudinal sections (213) being symmetrical with respect to the optical center of the edge-cut lens (21).

4. Lens barrel according to claim 2, characterized in that the distance of the longitudinal section (213) from the optical center of the edged lens (21) is greater than the radius of the lens part (211) and less than the radius of the edged lens (21).

5. A lens barrel according to claim 2, wherein an angle between the longitudinal section (213) and a central axis of the lens portion (211) is greater than 0 ° and less than 90 °.

6. The lens barrel according to claim 2, characterized in that a portion of the barrel body (11) forming the first accommodation chamber (121) is a first body portion (111), the first body portion (111) includes a first barrel section (112), and an outer peripheral surface of the first barrel section (112) includes at least one flat surface (113).

7. A lens barrel according to claim 6, wherein the outer peripheral surface of the first barrel section (112) comprises two said flat surfaces (113) and two identical first cambered surfaces (114), the two said flat surfaces (113) are symmetrically arranged about the central axis of the lens barrel (10), and at least one said flat surface (113) is fitted with one said longitudinal section (213).

8. The lens barrel according to claim 7, wherein the first body portion (111) further comprises a second barrel section (115) connected to the first barrel section (112), the first barrel section (112) is located on a side of the second barrel section (115) away from the second accommodating cavity (122), an outer peripheral surface of the second barrel section (115) comprises a second arc surface (116), and a corresponding radius of the second arc surface (116) is greater than or equal to a corresponding radius of the first arc surface (114).

9. The lens barrel according to claim 2, wherein the first accommodation chamber (121) includes a first chamber segment (123) and a second chamber segment (124) which are connected in series in a direction close to the second accommodation chamber (122), wherein a cross-sectional area of the first chamber segment (123) is smaller than a cross-sectional area of the second chamber segment (124), and the mounting portion (212) is mounted in the second chamber segment (124).

10. The lens barrel according to claim 6, wherein a mounting clearance is provided between an inner wall of the first body portion (111) and the mounting portion (212).

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