Lens barrel structure and camera module

Abstract

The utility model provides a lens cone structure and a camera module, the lens cone structure comprises a lens cone body and a transition piece, and the transition piece is sleeved on the periphery of the lens cone body; the transition piece comprises a side wall and a bottom edge which are connected; an outer inclined surface and a bearing end surface which are connected are formed at the periphery of the lens cone body; the side wall is sleeved on the outer inclined surface, the bottom edge and the bearing end surface are oppositely arranged, and a gap is arranged between the bottom edge and the bearing end surface; the transition piece and the lens barrel body are fixed through dispensing in the gap; an included angle alpha is formed between the side wall and the bottom edge, and the included angle alpha is larger than or equal to 100 and smaller than or equal to 130. According to the lens cone structure and the camera module, the lens cone can be ensured to recover to the original state after being pulled, the deformation of the lens cone at high temperature can be ensured, and the influence of the thermosetting adhesive on the performance of the lens is reduced.

Description

Technical Field

[0001] The present application belongs to the field of optical devices, and in particular, relates to a lens barrel structure and a camera module. Background Art

[0002] In recent years, with the rapid development of electronic devices such as smart phones, camera lenses are increasingly used in these electronic devices. It is particularly important to use special mobile phone lens technology as a main highlight to attract consumers. For example, some special mobile phone lenses such as liquid lens lenses, TLENS lenses, continuous zoom lenses, variable aperture lenses, etc., especially variable aperture lenses, have attracted much attention as main cameras in recent years. This lens can adjust the aperture size through a special structure or external components to meet consumers' shooting needs in different environments.

[0003] The technical difficulty of variable aperture lenses lies in the way the aperture VA motor is fixed to the lens structure during the manufacturing and assembly process. Currently, the VA motor and the lens barrel are directly glued with thermosetting glue. When the glue heats up, it has a pulling force on the motor and the lens barrel. Under high temperature conditions, the lens barrel and the motor are fixed together. When the temperature is lowered, they can only return to the initial state before the motor is pulled. Therefore, the pulling force generated by the thermal expansion and contraction of the glue when it cures will affect the fit between the lens inside the lens and the lens barrel. For more sensitive optical systems, slight movements in the actual assembly fit will also result in greater performance losses. Utility Model Content

[0004] In view of the deficiencies in the above-mentioned prior art, the utility model provides a lens barrel structure and a camera module, which can not only ensure that the lens barrel is restored to its original state after being pulled, but also ensure the deformation of the lens barrel at high temperature, thereby reducing the influence of thermosetting adhesive on lens performance.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a lens barrel structure, including a lens barrel body and a transition piece, the transition piece is sleeved on the outer periphery of the lens barrel body; the transition piece includes connected side walls and a bottom edge; the outer periphery of the lens barrel body forms a connected outer inclined surface and a supporting end surface; the side wall is sleeved on the outer inclined surface, the bottom edge is arranged opposite to the supporting end surface, and a gap is arranged between the bottom edge and the supporting end surface; the transition piece and the lens barrel body are fixed by dispensing glue in the gap; an angle α is formed between the side wall and the bottom edge, and the angle α satisfies: 100≤α≤130.

[0006] According to one embodiment of the present application, the side wall length L of the side wall and the bottom edge width D of the bottom edge satisfy: 0.5 <L / D<1.3。

[0007] According to an embodiment of the present application, a side wall height H1 of the side wall and a height H2 from the side wall to the object side end surface of the lens barrel body satisfy: 0.5≤H1 / H2<1.2.

[0008] According to one embodiment of the present application, the minimum inner diameter Φ1 of the transition piece, the outer diameter Φ3 of the bottom edge, and the sidewall height H1 of the sidewall satisfy: 2.0<(Φ3-Φ1) / H1<3.5.

[0009] According to one embodiment of the present application, the maximum outer diameter Φ2 of the side wall and the height H2 of the side wall to the object side end surface of the lens barrel body satisfy: 2<Φ2 / (2*H2)<4.5.

[0010] According to one embodiment of the present application, a first anti-overflow structure is provided on a side of the bottom edge adjacent to the supporting end surface.

[0011] According to one embodiment of the present application, the supporting end surface is provided with a second anti-overflow structure.

[0012] According to one embodiment of the present application, the side wall length L of the side wall and the height H2 from the side wall to the object side end surface of the lens barrel body satisfy: 0.5 <L / H2<1.3。

[0013] According to one embodiment of the present application, the minimum thickness G1 of the bottom edge of the transition piece and the minimum spacing distance G2 of the gap satisfy: 0.5≤G2 / G1<1.7.

[0014] The utility model provides a camera module, comprising a drive component and a lens barrel structure described in any embodiment of the present application; the drive component is connected to the upper surface of the bottom edge by glue.

[0015] The utility model adopts the above technical solution, so that it has the following beneficial effects:

[0016] Conventional lens barrels and motor components are directly bonded by thermosetting adhesive. The pulling force generated during the curing process of the glue will have a certain impact on the lens, resulting in changes in lens parameters. The utility model improves this problem by adding a transition piece structure between the lens barrel body and the motor component. The transition piece and the lens barrel body are bonded by UV glue before assembling the lens. After the lens is assembled, the whole is connected to the motor component by UV thermosetting adhesive. The transition piece can effectively reduce the impact of thermosetting adhesive curing on the lens, thereby improving the module assembly yield and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a schematic structural diagram of the lens barrel structure of the first embodiment of the utility model;

[0019] Figure 2 This is a schematic diagram of the lens barrel structure of the first embodiment of the utility model;

[0020] Figure 3 for Figure 2 A partial enlarged view of

[0021] Figures 4 to 6 It is a comparison diagram of the lens field curvature offset curve when the angle α has different value ranges;

[0022] Figure 7 This is a schematic structural diagram of the lens barrel structure of the second embodiment of the present utility model;

[0023] Figure 8 This is a schematic structural diagram of the lens barrel structure of Embodiment 3 of the present utility model;

[0024] Fig. 9 It is a structural schematic diagram of the lens barrel structure of the fourth embodiment of the present utility model.

[0025] Description of Figure Numbers:

[0026] 1- Lens barrel body;

[0027] 11-outer inclined surface; 12-supporting end surface; 13-second anti-overflow structure;

[0028] 2- Transition piece;

[0029] 21-side wall; 22-bottom edge; 23-first anti-overflow structure

[0030] 3-Drive assembly. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0032] It should be noted that, in the present specification, the expressions first, second, third, etc. are only used to distinguish one feature from another feature, but do not mean any limitation to the features.

[0033] It should also be understood that the terms "comprises", "including", "having", "includes" and / or "comprising", when used in this specification, indicate the presence of the stated features, elements and / or components, but do not exclude the presence or addition of one or more other features, elements, components and / or combinations thereof. In addition, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire listed features rather than modifying the individual elements in the list. In addition, when describing embodiments of the present application, "may" is used to mean "one or more embodiments of the present application". And, the term "exemplary" is intended to refer to an example or illustration.

[0034] Unless otherwise defined, all terms (including technical terms and scientific terms) used in this article have the same meaning as commonly understood by ordinary technicians in the field to which this application belongs. It should also be understood that terms (such as terms defined in commonly used dictionaries) should be interpreted as having the same meaning as their meaning in the context of the relevant technology, and will not be interpreted in an idealized or overly formal way unless explicitly defined in this article.

[0035] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The features, principles and other aspects of the present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0036] Exemplary Embodiments

[0037] See also Figures 1 to 9A lens barrel structure of an exemplary embodiment of the present application comprises a lens barrel body 1 and a transition piece 2, wherein the transition piece 2 is sleeved on the outer periphery of the lens barrel body 1; the transition piece 2 comprises a connected side wall 21 and a bottom edge 22; the outer periphery of the lens barrel body 1 forms a connected outer bevel 11 and a bearing end face 12; the side wall 21 is sleeved on the outer bevel 11, the bottom edge 22 is arranged opposite to the bearing end face 12, and a gap is arranged between the bottom edge 22 and the bearing end face 12; the transition piece 2 and the lens barrel body 1 are fixed by dispensing glue in the gap, and UV glue is used in this embodiment; an angle α is formed between the side wall 21 and the bottom edge 22, and the angle α satisfies: 100≤α≤130. The conventional lens barrel body 1 is directly bonded to the motor assembly by thermosetting glue, and the pulling force generated during the curing of the glue will have a certain influence on the lens, resulting in changes in lens parameters. The utility model improves this problem by adding a transition piece 2 structure between the lens barrel body 1 and the motor assembly. The transition piece 2 is bonded to the lens barrel body 1 by UV glue before the lens is assembled. After the lens is assembled, the whole is connected to the motor assembly by UV thermosetting glue. The transition piece 2 can effectively reduce the influence of the thermosetting glue curing on the lens, thereby improving the module assembly yield and reducing costs.

[0038] At the same time, the angle α between the side wall 21 and the bottom edge 22 needs to meet the above conditions 100≤α≤130 to ensure the coverage area and strength of the transition piece 2. If it is too large or too small, the glue curing will still have a certain impact on the lens surface shape inside the lens.

[0039] like Figure 4 When the angle a=80°, the lens surface data at the position far from the optical axis is offset more, thereby affecting the edge graphic field curvature, and the lens field curvature is offset more.

[0040] like Figure 4 When the angle a=121°, the lens surface shape changes slightly and the lens field curvature shifts slightly.

[0041] like Figure 5 When the angle α is 150°, the lens surface data at a position far from the optical axis is offset and increases, which affects the field curvature of the edge pattern, and the lens field curvature is offset greatly.

[0042] It can be seen that in the present embodiment, when the lens barrel structure is selected at an included angle of 80° and 150°, the glue curing has a greater influence on the lens deformation of the lens barrel body 1, while when the included angle α=121°, the lens surface shape changes less and the lens field curvature shift is smaller, which demonstrates the rationality of the range of 100≤a≤130.

[0043] In an exemplary embodiment, the sidewall length L of the sidewall 21 and the bottom width D of the bottom 22 satisfy: 0.5 < L / D < 1.3. Preferably, 1.05 < L / D < 1.2; The transition member 2 mainly includes two part lengths: the sidewall length and the bottom width. The sidewall length cooperates with the outer inclined surface 11 of the lens barrel body 1, and the bottom width cooperates with the bearing end surface 12 of the lens barrel body 1. By controlling the ratio of the sidewall length to the bottom width with the above conditional formula, the overall strength of the structure of the transition member 2 can be improved, and excessive deformation caused by being pulled during the dispensing and curing process can be avoided.

[0044] In an exemplary embodiment, the sidewall height H1 of the sidewall 21 and the height H2 from the sidewall 21 to the object-side end surface of the lens barrel body 1 satisfy: 0.5 ≤ H1 / H2 < 1.2. Preferably, 0.65 ≤ H1 / H2 < 1.05. The curing of the glue mainly affects the lenses in the adjacent areas. The sidewall height only needs to cover the affected area. Too long a height will instead easily cause deterioration of geometric tolerances such as the coaxiality and roundness of the transition member 2 and a decrease in strength. That is, by using the above conditional formula, a suitable sidewall height can be designed to effectively improve the forming accuracy of the transition member 2 and reduce costs.

[0045] In an exemplary embodiment, the minimum inner diameter Φ1 of the transition member 2, the outer diameter Φ3 of the bottom 22, and the sidewall height H1 of the sidewall 21 satisfy: 2.0 < (Φ3 - Φ1) / H1 < 3.5. Preferably, 2.2 < (Φ3 - Φ1) / H1 < 2.8. Larger or smaller aspect ratios of the transition member 2 are of no help in improving the strength and coverage area of the transition member 2 and are likely to cause abnormal filling of the structural member. By controlling and designing the minimum inner diameter of the transition member 2 and the maximum outer diameter of the bottom 22 with the above conditional formula, the transition member 2 can maintain a suitable aspect ratio under the condition of ensuring a certain dispensing width, which is beneficial to forming and filling and improves the component accuracy.

[0046] In an exemplary embodiment, the maximum outer diameter Φ2 of the sidewall 21 and the height H2 from the sidewall 21 to the object-side end surface of the lens barrel body 1 satisfy: 2 < Φ2 / (2*H2) < 4.5. Preferably, 2.5 < Φ2 / (2*H2) < 4. The maximum outer diameter Φ2 of the sidewall 21 needs to be adjusted according to the mating position with the lens barrel body 1. That is, by using the above conditional formula, the maximum outer diameter Φ2 of the sidewall 21 is reasonably designed according to the ratio of the distance from the top of the sidewall 21 to the object-side end surface of the lens barrel body 1, ensuring a tight fit between the transition member 2 and the lens barrel body 1 and preventing the glue from overflowing after dispensing and expanding the affected area.

[0047] In an exemplary embodiment, a first anti-overflow structure 23 is provided on a surface of the bottom edge 22 adjacent to the abutting end face 12. Preferably, the first anti-overflow structure 23 may be configured by providing a plurality of groove structures on the surface of the bottom edge 22 adjacent to the abutting end face 12; for a lens module with limited dispensing space and a relatively large outer shape, the groove structures can increase the dispensing space, effectively improve the bonding strength while ensuring the structural strength of the transition member 2, and prevent glue from overflowing.

[0048] In an exemplary embodiment, a second anti-overflow structure 13 is provided on the abutting end face 12. Preferably, the second anti-overflow structure 13 may be configured by providing a plurality of conical groove structures on the abutting end face 12, and the cross-section of the second anti-overflow structure 13 is wavy; for some module barrels with a relatively small platform or a certain inclination angle on the platform, the second anti-overflow structure 13 can prevent glue from overflowing due to limited space or an inclined angle during dispensing, and at the same time increase a certain dispensing space to improve the bonding strength.

[0049] In an exemplary embodiment, the side wall length L of the side wall 21 and the height H2 from the side wall 21 to the object-side end face of the lens barrel body 1 satisfy: 0.5 < L / H2 < 1.3. Preferably, 0.7 < L / H2 < 1.1. By controlling the side wall length and the height from the side wall 21 to the object-side end face of the lens barrel body 1 through the above conditional formula, the fitting length between the transition member 2 and the lens barrel body 1 is ensured, the strength is improved, and the deformation of the transition member 2 during dispensing is prevented.

[0050] In an exemplary embodiment, the minimum thickness G1 of the bottom edge 22 of the transition member 2 and the minimum spacing distance G2 of the gap satisfy: 0.5 ≤ G2 / G1 < 1.7. Preferably, 0.63 ≤ G2 / G1 < 1.2. When considering the dispensing fit of the transition member 2 under limited space conditions, the thickness of the transition member 2 and the size of the dispensing gap need to be considered simultaneously. By controlling the ratio of the two through the above conditional formula, sufficient dispensing space can be left while ensuring sufficient thickness strength of the transition member 2, enhancing the bonding strength of the assembly.

[0051] The present utility model provides an imaging module, which includes a driving component 3 and the lens barrel structure according to any one of the embodiments of the present application; the driving component 3 is connected to the upper surface of the bottom edge 22 by glue.

[0052] The imaging module in this embodiment includes a lens barrel body 1, a transition member 2, and a driving component 3. The lens barrel body 1 and the transition member 2 are bonded by a conventional UV glue, which is a commonly used type for fixing lens components, has a high bonding strength, and is suitable for some relatively simple and fast bonding requirements; the bottom edge 22 of the transition member 2 and the driving component 3 are bonded and fixed by a UV thermosetting glue, which is more heat-resistant and corrosion-resistant than ordinary UV glue, but requires heat for fixing, and can be used for bonding the outer side and the aperture component, which is beneficial to improving the overall environmental reliability of the module.

[0053] A specific embodiment of a lens barrel structure applicable to the above embodiment will be further described below with reference to the accompanying drawings. Specific embodiment 1

[0055] Figure 1 to Figure 3 This is a structural schematic diagram of a lens barrel structure embodiment 1 of the present application, a lens barrel structure includes a lens barrel body 1 and a transition piece 2, the transition piece 2 is sleeved on the outer periphery of the lens barrel body 1; the transition piece 2 includes a connected side wall 21 and a bottom edge 22; the outer periphery of the lens barrel body 1 forms a connected outer bevel 11 and a supporting end face 12; the side wall 21 is sleeved on the outer bevel 11, the bottom edge 22 is arranged opposite to the supporting end face 12, and a gap is provided between the bottom edge 22 and the supporting end face 12; the transition piece 2 and the lens barrel body 1 are fixed by glue in the gap; an angle a is formed between the side wall 21 and the bottom edge 22, and the angle a=102°.

[0056] As shown in Table 1, it is a basic parameter table of the lens barrel structure of Example 1, wherein the unit of the angle a between the side wall 21 and the bottom edge 22 is degree; the unit of the side wall length L of the side wall 21, the bottom edge width D of the bottom edge 22, the minimum inner diameter Φ1 of the transition piece 2, the maximum outer diameter Φ2 of the side wall 21, the outer diameter Φ3 of the bottom edge 22, the side wall height H1 of the side wall 21, the height H2 from the side wall 21 to the object side end surface of the lens barrel body 1, the minimum thickness G1 of the bottom edge 22 of the transition piece 2 and the minimum spacing distance G2 of the gap are all millimeters (mm).

[0057] Example Data a L D Φ1 Φ2 Φ3 H1 H2 G1 G2 1 102 1.29 1.21 8.57 9.09 11.5 1.21 1.14 0.1 0.05

[0058] Table 1

[0059] The lens barrel structure in Example 1 satisfies:

[0060] L / D=1.07;1.05 <L / D<1.2。

[0061] H1 / H2=1.06; 0.5≤H1 / H2<1.2.

[0062] (Φ3-Φ1) / H1=2.42; 2.2<(Φ3-Φ1) / H1<2.8.

[0063] Φ2 / (2*H2)=3.99; 2.5<Φ2 / (2*H2)<4.

[0064] L / H2=1.13;0.5 <L / H2<1.3。

[0065] G2 / G1=0.5; 0.5≤G2 / G1<1.7.

[0066] Figure 1 A schematic structural diagram of a lens barrel structure of Example 1 is shown, and it can be seen that the supporting end surface 12 is a horizontal plane and a gap is formed between the supporting end surface 12 and the bottom edge 22 of the transition piece 2. Specific embodiment 2

[0068] Figure 7 This is a schematic diagram of the structure of a lens barrel structure embodiment 2 of the present application, a lens barrel structure having a structure that is basically the same as that of embodiment 1, with the difference that: the angle α between the side wall 21 and the bottom edge 22 is 121°.

[0069] As shown in Table 2, it is a basic parameter table of the lens barrel structure of Example 2, wherein the unit of the angle α between the side wall 21 and the bottom edge 22 is degree; the unit of the side wall length L of the side wall 21, the bottom edge width D of the bottom edge 22, the minimum inner diameter Φ1 of the transition piece 2, the maximum outer diameter Φ2 of the side wall 21, the outer diameter Φ3 of the bottom edge 22, the side wall height H1 of the side wall 21, the height H2 from the side wall 21 to the object side end surface of the lens barrel body 1, the minimum thickness G1 of the bottom edge 22 of the transition piece 2 and the minimum spacing distance G2 of the gap are all millimeters (mm).

[0070] Example Data α L D Φ1 Φ2 Φ3 H1 H2 G1 G2 2 121 1.46 1.3 8.44 9.09 11.52 1.42 1.53 0.1 0.1

[0071] Table 2

[0072] The lens barrel structure in Example 2 satisfies:

[0073] L / D=1.12;1.05 <L / D<1.2。

[0074] H1 / H2=0.93; 0.5≤H1 / H2<1.2.

[0075] (Φ3-Φ1) / H1=2.17; 2.0<(Φ3-Φ1) / H1<3.5.

[0076] Φ2 / (2*H2)=2.97; 2.5<Φ2 / (2*H2)<4.

[0077] L / H2=0.95;0.5 <L / H2<1.3。

[0078] G2 / G1=1; 0.5≤G2 / G1<1.7.

[0079] Figure 7 A schematic structural diagram of a lens barrel structure of Example 2 is shown, and it can be seen that the supporting end surface 12 is arranged in an inclined surface and forms a gap with the bottom edge 22 of the transition piece 2. Specific embodiment 3

[0081] Figure 8This is a schematic diagram of the structure of a lens barrel structure embodiment 3 of the present application, a lens barrel structure whose structure is basically the same as that of embodiment 1, the difference being that: the angle α between the side wall 21 and the bottom edge 22 is 106°.

[0082] A first anti-overflow structure 23 is disposed on a side of the bottom edge 22 adjacent to the supporting end surface 12 .

[0083] The supporting end surface 12 is provided with a second anti-overflow structure 13 .

[0084] As shown in Table 3, it is a basic parameter table of the lens barrel structure of Example 3, wherein the unit of the angle α between the side wall 21 and the bottom edge 22 is degree; the unit of the side wall length L of the side wall 21, the bottom edge width D of the bottom edge 22, the minimum inner diameter Φ1 of the transition piece 2, the maximum outer diameter Φ2 of the side wall 21, the outer diameter Φ3 of the bottom edge 22, the side wall height H1 of the side wall 21, the height H2 from the side wall 21 to the object side end surface of the lens barrel body 1, the minimum thickness G1 of the bottom edge 22 of the transition piece 2 and the minimum spacing distance G2 of the gap are all millimeters (mm).

[0085] Example Data α L D Φ1 Φ2 Φ3 H1 H2 G1 G2 3 106 0.99 1.29 8.57 9.05 11.82 0.96 1.91 0.08 0.13

[0086] Table 3

[0087] The lens barrel structure in Example 3 satisfies:

[0088] L / D=0.77;0.5 <L / D<1.3。

[0089] H1 / H2=0.5; 0.5≤H1 / H2<1.2.

[0090] (Φ3-Φ1) / H1=3.39; 2.0<(Φ3-Φ1) / H1<3.5.

[0091] Φ2 / (2*H2)=2.37; 2<Φ2 / (2*H2)<4.5.

[0092] L / H2=0.52;0.5 <L / H2<1.3。

[0093] G2 / G1=1.63; 0.5≤G2 / G1<1.7.

[0094] Figure 8 The schematic diagram of the structure of a lens barrel structure of Example 3 shows that a first anti-overflow structure 23 with a plurality of grooves is provided on a side of the bottom edge 22 adjacent to the supporting end surface 12. The supporting end surface 12 is provided with a second anti-overflow structure 13 with a wavy cross section. Specific embodiment 4

[0096] Fig. 9This is a schematic diagram of the structure of a lens barrel structure embodiment 4 of the present application, a lens barrel structure whose structure is basically the same as that of embodiment 1, the difference being that: the angle α between the side wall 21 and the bottom edge 22 is 100°.

[0097] A first anti-overflow structure 23 is disposed on a side of the bottom edge 22 adjacent to the supporting end surface 12 .

[0098] The supporting end surface 12 is provided with a second anti-overflow structure 13 .

[0099] As shown in Table 4, it is a basic parameter table of the lens barrel structure of Example 4, wherein the unit of the angle α between the side wall 21 and the bottom edge 22 is degree; the unit of the side wall length L of the side wall 21, the bottom edge width D of the bottom edge 22, the minimum inner diameter Φ1 of the transition piece 2, the maximum outer diameter Φ2 of the side wall 21, the outer diameter Φ3 of the bottom edge 22, the side wall height H1 of the side wall 21, the height H2 from the side wall 21 to the object side end surface of the lens barrel body 1, the minimum thickness G1 of the bottom edge 22 of the transition piece 2 and the minimum spacing distance G2 of the gap are all millimeters (mm).

[0100] Example Data α L D Φ1 Φ2 Φ3 H1 H2 G1 G2 4 100 1.22 1.1 8.63 9.07 11.45 1.2 1.68 0.19 0.12

[0101] Table 4

[0102] The lens barrel structure in Embodiment 3 satisfies:

[0103] L / D=1.11;0.5 <L / D<1.3。

[0104] H1 / H2=0.71; 0.5≤H1 / H2<1.2.

[0105] (Φ3-Φ1) / H1=2.35; 2.0<(Φ3-Φ1) / H1<3.5.

[0106] Φ2 / (2*H2)=2.7; 2<Φ2 / (2*H2)<4.5.

[0107] L / H2=0.73;0.5 <L / H2<1.3。

[0108] G2 / G1=0.63; 0.5≤G2 / G1<1.7.

[0109] Fig. 9 The schematic diagram of the structure of a lens barrel structure of Example 4 shows that a first anti-overflow structure 23 with a plurality of grooves is provided on a side of the bottom edge 22 adjacent to the supporting end surface 12. The supporting end surface 12 is provided with a second anti-overflow structure 13 with a wavy cross section.

[0110] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, improvements, equivalent substitutions, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A lens barrel structure, characterized in that: It comprises a lens barrel body and a transition piece, wherein the transition piece is sleeved on the outer circumference of the lens barrel body; the transition piece comprises connected side walls and a bottom edge; the outer circumference of the lens barrel body forms a connected outer inclined surface and a supporting end surface; the side wall is sleeved on the outer inclined surface, the bottom edge is arranged opposite to the supporting end surface, and a gap is arranged between the bottom edge and the supporting end surface; the transition piece is fixed to the lens barrel body by dispensing glue in the gap; an angle α is formed between the side wall and the bottom edge, and the angle α satisfies: 100≤α≤130.

2. The lens barrel structure according to claim 1, characterized in that: The side wall length L of the side wall and the bottom edge width D of the bottom edge satisfy: 0.5 <L / D<1.3。 3. The lens barrel structure according to claim 1, characterized in that: A side wall height H1 of the side wall and a height H2 from the side wall to the object side end surface of the lens barrel body satisfy the following conditions: 0.5≤H1 / H2<1.

2.

4. The lens barrel structure according to claim 1, characterized in that: The minimum inner diameter Φ1 of the transition piece, the outer diameter Φ3 of the bottom edge and the side wall height H1 of the side wall satisfy: 2.0<(Φ3-Φ1) / H1<3.

5.

5. The lens barrel structure according to claim 1, characterized in that: The maximum outer diameter Φ2 of the side wall and the height H2 from the side wall to the object side end surface of the lens barrel body satisfy the following conditions: 2<Φ2 / (2*H2)<4.

5.

6. The lens barrel structure according to claim 1, characterized in that: A first anti-overflow structure is arranged on a side of the bottom edge adjacent to the supporting end surface.

7. The lens barrel structure according to claim 1, characterized in that: The supporting end surface is provided with a second anti-overflow structure.

8. The lens barrel structure according to claim 1, characterized in that: The side wall length L of the side wall and the height H2 from the side wall to the object side end surface of the lens barrel body satisfy: 0.5 <L / H2<1.3。 9. The lens barrel structure according to claim 7 or 8, characterized in that: The minimum thickness G1 of the bottom edge of the transition piece and the minimum spacing distance G2 of the gap satisfy: 0.5≤G2 / G1<1.

7.

10. A camera module, characterized in that: It comprises a driving component and the lens barrel structure according to any one of claims 1 to 8; the driving component is connected to the upper surface of the bottom edge by glue.

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