Lens structure and optical imaging lens

Abstract

The utility model provides a lens structure and an optical imaging lens. The lens structure comprises a lens barrel, a lens group and a pressing ring. The lens group comprises at least two lenses which are arranged along an optical axis and are fixed in the lens barrel; a groove and a first bearing surface are formed on the outer side of the surface, close to the imaging side, of the lens closest to the imaging side; the first bearing surface is positioned on the outer side of the groove; a boss and a second bearing surface are formed on the pressing ring; the boss is matched with the groove in a buckled mode. The second bearing surface is positioned on the outer side of the boss; the second bearing surface is attached to the first bearing surface; the lens closest to the imaging side is fixed in the lens barrel through the pressing ring; the surface area S1 of the groove and the area S of the first bearing face meet the condition that S1 / S is larger than or equal to 0.4 and smaller than or equal to 0.6. According to the lens structure and the optical imaging lens of the utility model, the deformation of the lens barrel after dispensing can be reduced on the basis of not changing the overall dimension of the lens.

Description

Technical Field

[0001] The present application belongs to the field of optical devices, and in particular to a lens structure and an optical imaging lens. Background Art

[0002] As the requirements for lens modules of smart electronic devices become higher and higher, the pixel density of their imaging lenses is also increasing by orders of magnitude, which leads to more and more complex lens structures. In order to fix the lens, glue is dispensed at the module end. However, after the module is dispensed, the glue shrinks and pulls the lens barrel, causing the lens barrel to deform, causing the lens to lose its restraint in the barrel. When the module end drops reliably, it is easy to cause lens tilt, eccentricity, and other phenomena, which reduce the quality and performance of the lens. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the utility model provides a lens structure and an optical imaging lens, which can reduce the deformation of the lens barrel after gluing without changing the outer dimensions of the lens.

[0004] In order to achieve the above object, the utility model provides a lens structure, comprising:

[0005] Lens tube;

[0006] A lens group, the lens group comprising at least two lenses arranged along the optical axis and fixed in the lens barrel; a groove and a first bearing surface are formed on the outer side of a surface of the lens closest to the imaging side close to the imaging side; the first bearing surface is located on the outer side of the groove; and

[0007] A pressing ring, the pressing ring forms a boss and a second bearing surface; the boss is snap-fitted with the groove; the second bearing surface is located outside the boss; the second bearing surface is in contact with the first bearing surface; the lens closest to the imaging side is fixed in the lens barrel by the pressing ring;

[0008] The surface area S1 of the groove satisfies: S1 = π × (r2 2 -r1 2 );

[0009] The area S of the first bearing surface satisfies: S=π×(R2 2 -R1 2 ), 0.4≤S1 / S≤0.6;

[0010] Among them, r1 represents the inner diameter of the groove; r2 represents the outer diameter of the groove; R1 represents the inner diameter of the first bearing surface; R2 represents the outer diameter of the first bearing surface.

[0011] According to one embodiment of the present application, the shape of the groove is one or more of a trapezoid, a rectangle and a triangle.

[0012] According to one embodiment of the present application, the height H1 of the groove and the height H of the first bearing surface satisfy: 0

[0013] According to one embodiment of the present application, the width L3 of the groove satisfies: L3 = r2 - r1;

[0014] The width L2 of the boss top satisfies: L2>r1 / 30;

[0015] The boss top width L2 and the groove width L3 satisfy: 0≤L2≤L3.

[0016] According to one embodiment of the present application, the slope inclination angle α of the groove satisfies: α=180°-arctan(2H1 / (L4-L3)); wherein H1 represents the height of the groove; L4 represents the width of the groove at the bearing surface; and L3 represents the width of the groove.

[0017] According to one embodiment of the present application, the height H3 of the boss and the height H of the first bearing surface satisfy: 0<H3<1 / 3×H.

[0018] According to one embodiment of the present application, the top width L2 of the boss and the length L1 of the second bearing surface satisfy: 0≤L2≤L1.

[0019] According to one embodiment of the present application, the gap G between the groove surface and the top of the boss satisfies: G=H1-H3, 0<G<1 / 8×H1; wherein H1 represents the height of the groove; H3 represents the height of the boss.

[0020] According to one embodiment of the present application, a gap G1 between the groove and the boss in a direction perpendicular to the optical axis satisfies: 0<G1≤0.01 mm.

[0021] According to one embodiment of the present application, the total arc length a of the boss and the inner diameter R1 of the first bearing surface satisfy: 0<a≤2×π×R1.

[0022] The utility model provides an optical imaging lens, comprising the lens group and the pressure ring described in any embodiment of the present application.

[0023] The utility model adopts the above technical solution, so that it has the following beneficial effects:

[0024] ​1. Through the cooperation of the groove, the first bearing surface and the boss, the lens closest to the imaging side is connected to the lens barrel through the pressure ring. The structure of the groove and the boss can enhance the strength of the lens barrel and reduce the deformation of the lens barrel after gluing; prevent the lens from tilting, eccentricity and other phenomena during the trust drop of the module end, thereby reducing the quality and performance of the lens.

[0025] 2. In addition, the use of grooves can change the stray light path through the shape of the grooves, reducing the risk of stray light in the lens barrel and its matching lenses.

[0026] 3. The setting of the inclined angle α of the groove can guide the movement of the pressing ring during assembly, reduce assembly eccentricity, and improve assembly accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] 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.

[0028] Figure 1 This is a schematic diagram of the structure of the lens of the first embodiment of the present utility model;

[0029] Figure 2 for Figure 1 A partial enlarged view of the middle A area;

[0030] Figure 3 and Figure 4 It is a comparison diagram of the deformation of the lens and the pressing ring in the original state and in the first embodiment of the utility model in the direction perpendicular to the optical axis at each gear position of the lens barrel under the same module pulling force;

[0031] Figure 5 This is a schematic diagram of the structure of the lens of the second embodiment of the present utility model;

[0032] Figure 6 This is a schematic diagram of the structure of the lens structure of the third embodiment of the present utility model;

[0033] Figure 7 This is a schematic diagram of the structure of the lens structure of the fourth embodiment of the present utility model;

[0034] Figure 8 This is a schematic structural diagram of a pressure ring according to a fifth embodiment of the present utility model;

[0035] Fig. 9 This is a schematic diagram of the structure of the pressure ring of the sixth embodiment of the utility model.

[0036] Description of Figure Numbers:

[0037] 1- Lens tube;

[0038] 2- Lens;

[0039] 21-groove; 22-first bearing surface;

[0040] 3- Pressing ring;

[0041] 31- boss; 32- second bearing surface. DETAILED DESCRIPTION

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] Exemplary Embodiments

[0048] See also Figures 1 to 9A lens structure of an exemplary embodiment of the present application comprises: a lens barrel 1; a lens group, the lens group comprising at least two lenses 2 arranged along the optical axis and fixed in the lens barrel 1; a groove 21 and a first bearing surface 22 are formed on the outer side of the surface of the lens 2 closest to the imaging side close to the imaging side; the first bearing surface 22 is located on the outer side of the groove 21; and a pressing ring 3, the pressing ring 3 forms a boss 31 and a second bearing surface 32; the boss 31 is snap-fitted with the groove 21; the second bearing surface 32 is located on the outer side of the boss 31; the second bearing surface 32 is in contact with the first bearing surface 22; the lens 2 closest to the imaging side is fixed in the lens barrel 1 by the pressing ring 3; the surface area S1 of the groove 21 satisfies: S1=π×(r2 2 -r1 2 ); The area S of the first bearing surface 22 satisfies: S = π × (R2 2 -R1 2 ), 0.4≤S1 / S≤0.6; wherein, r1 represents the inner diameter of the groove 21; r2 represents the outer diameter of the groove 21; R1 represents the inner diameter of the first bearing surface 22; R2 represents the outer diameter of the first bearing surface 22. Through the cooperation of the groove 21, the first bearing surface 22 and the boss 31, the lens 2 closest to the imaging side is connected to the lens barrel 1 through the pressure ring 3. The structure of the groove 21 and the boss 31 can enhance the strength of the lens barrel 1 and reduce the deformation of the lens barrel 1 after gluing; prevent the lens from tilting, eccentricity and other phenomena during the trust drop of the module end, which reduces the quality and performance of the lens. When S1 / S>0.6, the surface area of ​​the groove 21 is too large to affect the strength of the last lens. When S1 / S<0.4, the groove 21 is too small to form an effective fit with the boss 31 of the pressure ring 3, sacrificing the fit strength.

[0049] In an exemplary embodiment, the shape of the groove 21 is one or more of a trapezoid, a rectangle and a triangle.

[0050] In an exemplary embodiment, the height H1 of the groove 21 and the height H of the first bearing surface 22 satisfy: 0

[0051] In an exemplary embodiment, the width L3 of the groove 21 satisfies: L3=r2-r1; the top width L2 of the boss 31 satisfies: L2>r1 / 30; the top width L2 of the boss 31 and the width L3 of the groove 21 satisfy: 0≤L2≤L3. Preferably, 0≤L2 / L3≤1. Limiting the relative width of the groove 21 and the boss 31 of the pressing ring 3 can avoid radial interference between the groove 21 and the boss 31 of the pressing ring 3. ​

[0052] In an exemplary embodiment, the inclined surface inclination angle α of the groove 21 satisfies: α=180°-arctan(2H1 / (L4-L3)); wherein H1 represents the height of the groove 21; L4 represents the width of the groove 21 at the position of the bearing surface; and L3 represents the width of the groove 21. Preferably, 90°≤α≤110°. The inclined surface inclination angle α of the groove 21 can guide the movement of the pressing ring 3 during assembly and reduce assembly eccentricity.

[0053] In an exemplary embodiment, the height H3 of the boss 31 and the height H of the first bearing surface 22 satisfy: 0<H3<1 / 3×H. Preferably, 3<H / H3<9. If the boss 31 of the pressing ring 3 is too high, it will affect the strength of the lens, so the relative height of the boss 31 of the pressing ring 3 along the optical axis needs to be controlled.

[0054] In an exemplary embodiment, the top width L2 of the boss 31 and the length L1 of the second bearing surface 32 satisfy: 0≤L2≤L1. Preferably, 0≤L2 / L1≤1. By limiting the top width of the boss 31 of the pressing ring 3, it is possible to avoid the impact of its width on assembly stability.

[0055] In an exemplary embodiment, the gap G between the surface of the groove 21 and the top of the boss 31 satisfies: G = H1-H3, 0 < G < 1 / 8 × H1; wherein H1 represents the height of the groove 21; H3 represents the height of the boss 31. Preferably, 0.005 mm ≤ G ≤ 0.01 mm. The limitation of the gap G between the surface of the groove 21 and the top of the boss 31 can prevent interference with the cooperation between the lens and the pressure ring 3 along the optical axis direction.

[0056] In an exemplary embodiment, the gap G1 between the groove 21 and the boss 31 in the direction perpendicular to the optical axis satisfies: 0<G1≤0.01mm. Preferably, 0.005mm≤G1≤0.01mm. The gap between the groove 21 and the boss 31 in the direction perpendicular to the optical axis can prevent interference between the lens and the pressure ring 3.

[0057] In an exemplary embodiment, the total arc length a of the boss 31 and the inner diameter R1 of the first bearing surface 22 satisfy: 0<a≤2×π×R1. Preferably, 0<a / 2×π×R1≤1. Further preferably, 0.5≤a / 2×π×R1≤1. By limiting the arc length of the boss 31 of the pressing ring 3, the stability of the pressing ring 3 and the last lens is enhanced.

[0058] The utility model provides an optical imaging lens, comprising the lens group described in any embodiment of the present application and the pressure ring 3.

[0059] However, those skilled in the art should understand that, without departing from the technical solution claimed in the present application, the number of grooves 21 can be changed to obtain the various results and advantages described in this specification. For example, although one groove 21 is described as an example in the embodiment, the lens structure is not limited to including one groove 21. If necessary, the lens structure can also include other numbers of grooves 21.

[0060] A specific embodiment of a lens structure applicable to the above embodiment is further described below with reference to the accompanying drawings. Specific embodiment 1

[0062] Figure 1 and Figure 2 This is a structural schematic diagram of a lens structure embodiment 1 of the present application, a lens structure includes a lens barrel 1; a lens group, the lens group includes at least two lenses 2 arranged along the optical axis and fixed in the lens barrel 1; a groove 21 and a first bearing surface 22 are formed on the outer side of the surface of the lens 2 closest to the imaging side close to the imaging side; the first bearing surface 22 is located on the outer side of the groove 21; and a pressure ring 3, the pressure ring 3 forms a boss 31 and a second bearing surface 32; the boss 31 is snap-fitted with the groove 21; the second bearing surface 32 is located on the outer side of the boss 31; the second bearing surface 32 is in contact with the first bearing surface 22; the lens 2 closest to the imaging side is fixed in the lens barrel 1 by the pressure ring 3.

[0063] The lens 2 closest to the imaging side is buckled with the pressing ring 3, and the pressing ring 3 is bonded to the lens barrel 1 by glue.

[0064] As shown in Table 1, it is a basic parameter table of the lens structure of Example 1, wherein the height H of the first bearing surface 22, the height H1 of the groove 21, the height H3 of the boss 31, the length L1 of the second bearing surface 32, the top width L2 of the boss 31, the width L3 of the groove 21, the gap G1 between the groove 21 and the boss 31 in the direction perpendicular to the optical axis, the inner diameter R1 of the first bearing surface 22 and the total arc length a of the boss 31 are all in millimeters (mm). The unit of the inclined angle α of the groove 21 is degree.

[0065]

[0066] Table 1

[0067] The lens structure in Example 1 satisfies:

[0068] H / H1=7;3 <H / H1<8。

[0069] H / H3=8.43;3 <H / H3<9。

[0070] G1=0.005mm; 0.005mm≤G1≤0.01mm.

[0071] Figure 3 and Figure 4 A comparison diagram is shown of the deformation amounts of the lens barrel 1 at each position in the direction perpendicular to the optical axis when the same module pulling force is applied to the lens and the pressure ring 3 structure of the existing lens and the pressure ring 3 in the original state and the lens barrel 1 of the first embodiment at each position under the same module pulling force. It can be seen that when the lens and the pressure ring 3 structure of the present embodiment are subjected to the same module pulling force, the deformation amounts of the lens barrel 1 at each position in the direction perpendicular to the optical axis are smaller, which is beneficial to increasing the performance stability of the module lens. Specific embodiment 2

[0073] Figure 5 This is a structural diagram of a lens structure embodiment 2 of the present application, a lens structure whose structure is basically the same as that of embodiment 1, the difference is that: the inclined surface inclination angle α of the groove 21 is α=90°.

[0074] As shown in Table 2, it is a basic parameter table of the lens structure of Example 2, wherein the height H of the first bearing surface 22, the height H1 of the groove 21, the height H3 of the boss 31, the length L1 of the second bearing surface 32, the top width L2 of the boss 31, the width L3 of the groove 21, the gap G1 between the groove 21 and the boss 31 in the direction perpendicular to the optical axis, the inner diameter R1 of the first bearing surface 22 and the total arc length a of the boss 31 are all in millimeters (mm). The unit of the inclined angle α of the groove 21 is degree.

[0075]

[0076] Table 2

[0077] The lens structure in Example 2 satisfies:

[0078] H / H1=7;3 <H / H1<8。

[0079] H / H3=8.43;3 <H / H3<9。

[0080] G1=0.007mm; 0.005mm≤G1≤0.01mm.

[0081] Figure 5 A schematic structural diagram of a lens structure of Embodiment 2 is shown, where it can be seen that the inclined surface of the groove 21 has an inclination angle α, α=90°. Specific embodiment 3

[0083] Figure 6 This is a structural schematic diagram of a lens structure embodiment 3 of the present application, a lens structure whose structure is basically the same as that of embodiment 1, and the difference lies in: the cross-sectional shape of the boss 31 of the pressure ring 3 is a triangle.

[0084] As shown in Table 3, it is a basic parameter table of the lens structure of Example 3, wherein the height H of the first bearing surface 22, the height H1 of the groove 21, the height H3 of the boss 31, the length L1 of the second bearing surface 32, the top width L2 of the boss 31, the width L3 of the groove 21, the gap G1 between the groove 21 and the boss 31 in the direction perpendicular to the optical axis, the inner diameter R1 of the first bearing surface 22 and the total arc length a of the boss 31 are all in millimeters (mm). The unit of the inclined angle α of the groove 21 is degree.

[0085]

[0086] Table 3

[0087] The lens structure in Example 3 satisfies:

[0088] H / H1=3.5;3 <H / H1<8。

[0089] H / H3=3.7;3 <H / H3<9。

[0090] G1=0.01mm; 0.005mm≤G1≤0.01mm.

[0091] Figure 6 A schematic structural diagram of a lens structure of Example 3 is shown, and it can be seen that the cross-sectional shape of the boss 31 is a triangle. Specific embodiment 4

[0093] Figure 7 This is a structural diagram of a lens structure embodiment 4 of the present application, a lens structure whose structure is basically the same as that of embodiment 1, and the difference lies in: the cross-sectional shape of the boss 31 of the pressure ring 3 is a triangle.

[0094] As shown in Table 4, it is a basic parameter table of the lens structure of Example 3, wherein the height H of the first bearing surface 22, the height H1 of the groove 21, the height H3 of the boss 31, the length L1 of the second bearing surface 32, the top width L2 of the boss 31, the width L3 of the groove 21, the gap G1 between the groove 21 and the boss 31 in the direction perpendicular to the optical axis, the inner diameter R1 of the first bearing surface 22 and the total arc length a of the boss 31 are all in millimeters (mm). The unit of the inclined angle α of the groove 21 is degree.

[0095]

[0096] Table 4

[0097] The lens structure in Example 4 satisfies:

[0098] H / H1=7;3 <H / H1<8。

[0099] H / H3=8.33;3 <H / H3<9。

[0100] G1=0.007mm; 0.005mm≤G1≤0.01mm.

[0101] Figure 7 A schematic structural diagram of a lens structure of Example 4 is shown, and it can be seen that the cross-sectional shape of the boss 31 is a rectangle. Specific embodiment 5

[0103] Figure 8 This is a structural schematic diagram of a lens structure embodiment 5 of the present application, a lens structure whose structure is basically the same as that of embodiment 1, the difference being that: the pressure ring 3 forms four bosses 31, and the bosses 31 are non-continuously and symmetrically distributed along the circumference of the pressure ring 3.

[0104] As shown in Table 5, it is a basic parameter table of the lens structure of Example 3, wherein the height H of the first bearing surface 22, the height H1 of the groove 21, the height H3 of the boss 31, the length L1 of the second bearing surface 32, the top width L2 of the boss 31, the width L3 of the groove 21, the gap G1 between the groove 21 and the boss 31 in the direction perpendicular to the optical axis, the inner diameter R1 of the first bearing surface 22 and the total arc length a of the boss 31 are all in millimeters (mm). The unit of the inclined angle α of the groove 21 is degree.

[0105]

[0106]

[0107] Table 5

[0108] The lens structure in Example 5 satisfies:

[0109] H / H1=7;3 <H / H1<8。

[0110] H / H3=8.43;3 <H / H3<9。

[0111] G1=0.005mm; 0.005mm≤G1≤0.01mm.

[0112] Figure 8 The schematic structural diagram of the pressing ring 3 of the fifth embodiment is shown, and it can be seen that the bosses 31 are distributed non-continuously and symmetrically along the circumference of the pressing ring 3 . Specific embodiment 6

[0114] Fig. 9 This is a structural schematic diagram of a lens structure embodiment 6 of the present application, a lens structure whose structure is basically the same as that of embodiment 5, the difference being that the pressure ring 3 forms five bosses 31, and the bosses 31 are non-continuously and asymmetrically distributed along the circumference of the pressure ring 3.

[0115] As shown in Table 6, it is a basic parameter table of the lens structure of Example 3, wherein the height H of the first bearing surface 22, the height H1 of the groove 21, the height H3 of the boss 31, the length L1 of the second bearing surface 32, the top width L2 of the boss 31, the width L3 of the groove 21, the gap G1 between the groove 21 and the boss 31 in the direction perpendicular to the optical axis, the inner diameter R1 of the first bearing surface 22 and the total arc length a of the boss 31 are all in millimeters (mm). The unit of the inclined angle α of the groove 21 is degree.

[0116]

[0117] Table 6

[0118] The lens structure in Example 6 satisfies:

[0119] H / H1=7;3 <H / H1<8。

[0120] H / H3=8.43;3 <H / H3<9。

[0121] G1=0.005mm; 0.005mm≤G1≤0.01mm.

[0122] Fig. 9 A schematic structural diagram of the pressing ring 3 of Example 6 is shown, and it can be seen that the bosses 31 are non-continuously and asymmetrically distributed along the circumference of the pressing ring 3 .

[0123] In addition, the summary data of Examples 1 to 6 can be found in Table 7:

[0124]

[0125] Table 7

[0126] 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 structure, characterized in that: Comprising: A lens barrel; A lens group, the lens group includes at least two lenses arranged along the optical axis and fixed in the lens barrel; a groove and a first bearing surface are formed outside the surface of the lens closest to the imaging side and close to the imaging side; the first bearing surface is located outside the groove; and A retaining ring, the retaining ring forms a boss and a second bearing surface; the boss is snap-fitted with the groove; the second bearing surface is located outside the boss; the second bearing surface is attached to the first bearing surface; the lens closest to the imaging side is fixed in the lens barrel through the retaining ring; The surface area S1 of the groove satisfies: S1 = π × (r2 2 -r1 2 ); The area S of the first bearing surface satisfies: S=π×(R2 2 -R1 2 ), 0.4≤S1 / S≤0.6; Wherein, r1 represents the inner diameter of the groove; r2 represents the outer diameter of the groove; R1 represents the inner diameter of the first bearing surface; R2 represents the outer diameter of the first bearing surface.

2. The lens structure according to claim 1, characterized in that: The shape of the groove adopts one or more of trapezoid, rectangle and triangle.

3. The lens structure according to claim 1, characterized in that: The height H1 of the groove and the height H of the first bearing surface satisfy: 0 < H1 < H / 3.

4. The lens structure according to claim 1, wherein The width L3 of the groove satisfies: L3 = r2 - r1; The top width L2 of the boss satisfies: L2 > r1 / 30; The top width L2 of the boss and the width L3 of the groove satisfy: 0 ≤ L2 ≤ L3.

5. The lens structure according to claim 1, characterized in that: The inclined angle α of the inclined surface of the groove satisfies: α = 180° - arctan(2H1 / (L4 - L3)); wherein, H1 represents the height of the groove; L4 represents the width of the groove at the position of the first bearing surface; L3 represents the width of the groove.

6. The lens structure according to claim 1, characterized in that: The height H3 of the boss and the height H of the first bearing surface satisfy: 0 < H3 < 1 / 3×H.

7. The lens structure according to claim 1, characterized in that: The top width L2 of the boss and the length L1 of the second bearing surface satisfy: 0 ≤ L2 ≤ L1.

8. The lens structure according to claim 1, characterized in that: The gap G between the surface of the groove and the top of the boss satisfies: G = H1 - H3, 0 < G < 1 / 8×H1; wherein, H1 represents the height of the groove; H3 represents the height of the boss.

9. The lens structure according to claim 1, characterized in that: The gap G1 between the groove and the boss in the direction perpendicular to the optical axis satisfies: 0 < G1 ≤ 0.01 mm.

10. The lens structure according to claim 1, characterized in that: The total arc length a of the boss and the inner diameter R1 of the first bearing surface satisfy: 0 < a ≤ 2×π×R1.

11. An optical imaging lens, characterized in that: Comprising the lens group and the retaining ring according to any one of claims 1-10.

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