Pressing ring for improving lens exhaust and lens barrel
By designing a groove structure on the lens press ring, the problem of increasing internal pressure of the lens caused by glue infiltration is solved, the exhaustivity and assembly stability of the lens are improved, and problems such as cracking and glue frying are avoided.
Patent Information
- Application Number
- CN202420827373.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-22
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-04-22
AI Technical Summary
After the lens is dispensed with the ring, the infiltration problem caused by the fluidity of the glue, and the traditional ring lacks an exhaust structure, which leads to an increase in the internal pressure of the lens, which is prone to cracking and frying problems.
Design a press ring that improves the exhaust of the lens. By forming several grooves in the radial direction of the press ring body, the air escape space between the lens barrel and the press ring is increased, ensuring the strength of the press ring itself, and optimizing the shape and depth of the groove. To improve the exhaustivity of the lens.
Through the use of grooves, the air escape space between the lens barrel and the pressure ring is increased, the assembly stress is avoided, the exhaustivity of the lens is improved, the assembly lift is reduced, the assembly stability is improved, and the tear and deformation in the production stage are avoided.
Smart Images
Figure CN222259679U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the field of optical imaging, and in particular relates to a pressure ring and a lens barrel for improving lens exhaust. Background Art
[0002] After the lens is glued on the pressing ring, due to the fluidity of the glue, part of the glue will seep down to the light-incoming surface of the pressing ring. During the lens baking process, the seeped glue evaporates and turns into gas. The traditional pressing ring does not have a corresponding exhaust structure, so the gas cannot be discharged, resulting in greater stress inside the lens, which makes the lens prone to cracking and failure during the module manufacturing process.
[0003] like Figure 1 As shown, the existing lens pressing ring has no exhaust structure, which is prone to cracking, glue explosion and other problems during the module manufacturing process. Utility Model Content
[0004] In view of the above-mentioned deficiencies in the prior art, the utility model provides a pressure ring and a lens barrel for improving the exhaust of the lens, thereby enhancing the exhaust performance of the lens.
[0005] In order to achieve the above-mentioned purpose, the utility model provides a pressure ring for improving the exhaust of a lens, comprising a pressure ring body, wherein the pressure ring body is formed with a plurality of grooves along the radial direction;
[0006] The sum of the areas of the grooves S1 satisfies: The area S of the pressing ring body satisfies: S=1 / 2*(φE-φD)2*π-S1;
[0007] Among them, b is the length of the groove, f(x) is the expression of the groove notch length, y(x) is the expression of the outer diameter of the pressure ring body, φE is the outer diameter of the pressure ring body, and φD is the inner diameter of the pressure ring body.
[0008] According to one embodiment of the present application, the shape of the groove is one of a rectangle, a sector, an ellipse, a concave shape and a convex shape.
[0009] According to one embodiment of the present application, the depth a of the groove and the ring width L of the pressure ring body satisfy: 0.05≤a / L<1.
[0010] According to one embodiment of the present application, the length b of the groove and the inner diameter φD of the pressing ring body satisfy: 0≤b<1 / 2*φD.
[0011] According to one embodiment of the present application, the arc length s of the groove along the circumferential direction and the outer diameter φE of the pressure ring body satisfy: 0≤s≤φE*π.
[0012] According to one embodiment of the present application, when the shape of the groove is a concave shape, a first recessed portion and a second recessed portion are respectively formed on both sides of the bottom of the groove, and the length b of the groove, the length b1 of the first recessed portion and the length b2 of the second recessed portion satisfy: b1<0.5b, b2<0.5b; the depth a of the groove and the distance a1 from the bottom of the groove to the top of the groove satisfy: a1≤0.5a.
[0013] According to one embodiment of the present application, when the shape of the groove is convex, the groove includes a first cut surface, a recessed area and a second cut surface, the first cut surface and the second cut surface are tangent to the pressure ring body, and the recessed area is formed between the first cut surface and the second cut surface; the length b of the groove and the length b1 of the recessed area satisfy b1<0.8b; the depth a of the groove and the ring width L of the pressure ring body satisfy a <L。
[0014] According to one embodiment of the present application, the depth a of the groove and the ring width L of the pressure ring body satisfy: 0.05≤a / L<0.2.
[0015] According to one embodiment of the present application, the length b of the groove and the inner diameter φD of the pressing ring body satisfy: 0≤b<1 / 2*φD<0.5mm.
[0016] The utility model provides a lens barrel for improving the exhaust performance of a lens, comprising a pressure ring for improving the exhaust performance of a lens as described in any embodiment of the present application.
[0017] The utility model adopts the above technical solution, so that it has the following beneficial effects:
[0018] 1. The use of grooves increases the air escape space between the lens barrel and the pressure ring, ensures the strength of the pressure ring itself, and avoids excessive assembly stress and deformation.
[0019] 2. Ensure the contact area between the pressure ring and the lens barrel, which improves the exhaust performance of the lens, reduces assembly warping, and improves assembly stability.
[0020] 3. Use the groove part to ensure the strength of the pressing ring groove itself to avoid tearing, deformation and other phenomena during the production stage. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] 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.
[0022] Figure 1It is a schematic diagram of the pressing ring structure of the prior art;
[0023] Figure 2 This is a schematic structural diagram of a pressure ring for improving lens exhaust in a direction perpendicular to the optical axis according to an embodiment of the utility model;
[0024] Figure 3 This is a schematic structural diagram of a pressing ring for improving lens exhaust in an embodiment of the utility model when it is in a concave shape;
[0025] Figure 4 This is a schematic structural diagram of a pressing ring for improving lens exhaust in an embodiment of the utility model when it is in a convex shape;
[0026] Figure 5 This is a schematic structural diagram of the pressure ring of the first embodiment of the utility model;
[0027] Figure 6 for Figure 5 A partial enlarged view of the middle A area;
[0028] Figure 7 This is a schematic structural diagram of a pressure ring according to Embodiment 2 of the present utility model;
[0029] Figure 8 This is a schematic structural diagram of a pressure ring according to Embodiment 3 of the present utility model;
[0030] Fig. 9 This is a schematic structural diagram of a pressing ring according to a fourth embodiment of the present utility model;
[0031] Fig.10 This is a schematic structural diagram of a pressure ring according to a fifth embodiment of the present utility model;
[0032] Fig.11 This is a schematic structural diagram of a pressure ring according to a sixth embodiment of the present utility model;
[0033] Fig.12 This is a schematic structural diagram of a pressure ring according to Embodiment 7 of the present utility model;
[0034] Fig.13 This is a schematic structural diagram of a pressure ring according to an eighth embodiment of the present utility model;
[0035] Fig.14 This is a schematic structural diagram of a pressure ring according to a ninth embodiment of the present utility model;
[0036] Fig.15 It is a schematic structural diagram of the pressure ring of the tenth embodiment of the utility model. DETAILED DESCRIPTION
[0037] 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.
[0038] It should be noted that in this specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the features. Therefore, without departing from the teaching of the present application, the first lens discussed below may also be referred to as the second lens or the third lens.
[0039] 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.
[0040] 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.
[0041] 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.
[0042] Exemplary Embodiments
[0043] See also Figure 2 to Figure 4 A pressing ring for improving lens exhaust according to an exemplary embodiment of the present application comprises a pressing ring body 1, wherein the pressing ring body 1 is formed with a plurality of grooves along a radial direction; the sum of the areas of the grooves S1 satisfies: The area S of the pressing ring body satisfies: S=1 / 2*(φE-φD)2*π-S1; wherein b is the length of the groove, f(x) is the expression of the groove notch length, y(x) is the expression of the outer diameter of the pressing ring body, φE is the outer diameter of the pressing ring body, and φD is the inner diameter of the pressing ring body. By adopting the groove, the air escape space between the lens barrel and the pressing ring is increased, the strength of the pressing ring itself is ensured, and excessive assembly stress and deformation are avoided. Preferably, 0.01≤S1 / S≤0.5, which can avoid serious glue overflow due to excessively large groove area, or insufficient exhaust capacity due to too small groove area.
[0044] In an exemplary embodiment, the shape of the groove is one of a rectangle, a sector, an ellipse, a concave shape, and a convex shape. The groove is used to increase the glue storage volume, which is conducive to improving the push-off force of the lens.
[0045] In an exemplary embodiment, the depth a of the groove and the ring width L of the pressing ring body satisfy: 0.05≤a / L<1. Preferably, 0.05≤a / L<0.2.
[0046] In an exemplary embodiment, the length b of the groove and the inner diameter φD of the pressing ring body satisfy: 0≤b<1 / 2*φD. Preferably, 0≤b<1 / 2*φD<0.5mm. Further preferably, 0≤b<1 / 2*φD<0.2mm. The groove portion is used to increase the exhaust space and improve the exhaust performance of the lens.
[0047] In an exemplary embodiment, the arc length s of the groove along the circumferential direction and the outer diameter φE of the pressing ring body satisfy: 0≤s≤φE*π. Preferably, 0≤s / φE*π≤1, and more preferably 0≤
[0048] In an exemplary embodiment, when the shape of the groove is a concave shape, a first concave portion and a second concave portion are formed on both sides of the bottom of the groove, respectively, and the length b of the groove, the length b1 of the first concave portion, and the length b2 of the second concave portion satisfy: b1<0.5b, b2<0.5b; the depth a of the groove and the distance a1 from the bottom of the groove to the top of the groove satisfy: a1≤0.5a. Preferably, 0≤a1=b1<0.5a, 0≤a1=b2<0.5a. Ensure the strength of the pressing ring itself to avoid tearing, deformation, etc. during the production stage.
[0049] In an exemplary embodiment, when the shape of the groove is convex-shaped, the groove includes a first cutting surface, a recessed area, and a second cutting surface. The first cutting surface and the second cutting surface are tangent to the retainer body 1, and the recessed area is formed between the first cutting surface and the second cutting surface. The length b of the groove and the length b1 of the recessed area satisfy b1 < 0.8b. The depth a of the groove and the ring width L of the retainer body satisfy a < L. Preferably, 0 ≤ 2a1 = b1 < 0.8b. While increasing the exhaust space, the strength of the retainer is enhanced to avoid phenomena such as tearing and deformation during the production stage.
[0050] The present utility model provides a lens barrel for improving the exhaust performance of a lens, which includes a retainer for improving the exhaust of a lens according to any one of the embodiments of the present application.
[0051] However, those skilled in the art should understand that without departing from the technical solutions claimed in the present application, the number of grooves can be changed to obtain the various results and advantages described in this specification. For example, although two grooves are described as an example in the embodiment, the retainer for improving the exhaust of a lens is not limited to including two grooves. If necessary, the retainer for improving the exhaust of a lens may also include other numbers of grooves.
[0052] The following further describes a specific embodiment of a retainer for improving the exhaust of a lens applicable to the above embodiments with reference to the accompanying drawings. Specific Embodiment 1
[0054] Figure 5 and Figure 6 is a schematic structural diagram of Embodiment 1 of a retainer for improving the exhaust of a lens according to the present application. A retainer for improving the exhaust of a lens includes a retainer body 1. The retainer body 1 forms a plurality of continuous grooves 2 in the radial direction, and satisfies that the sum of the arc lengths s of the grooves 2 in the circumferential direction is equal to the circumference of the inner diameter of the retainer, that is: s * n / φE * π = 1.
[0055] As shown in Table 1, it is a basic parameter table of a retainer for improving the exhaust of a lens in Embodiment 1. Among them, the units of the depth a of the groove, the length b of the groove, the outer diameter φE of the retainer body, the inner diameter φD of the retainer body, and the arc length s of the groove in the circumferential direction are all millimeters (mm). The unit of the number n of grooves is pieces.
[0056] a b φE φD s Number of grooves 0.025 0.070 4.7 4.12 0.073 200
[0057] Table 1
[0058] The retainer for improving the exhaust of a lens in Embodiment 1 satisfies:
[0059] s * n / φE * π = 1.
[0060] 1 / 2*φD=2.06mm, where φD is the inner diameter of the pressing ring body. 0≤b<1 / 2*φD.
[0061] Figure 5 and Figure 6 A schematic structural diagram of a pressure ring for improving lens exhaust in Example 1 is shown, and it can be seen that a plurality of grooves 2 are densely and continuously formed along the circumferential direction on the periphery of the pressure ring body 1 . Specific embodiment 2
[0063] Figure 7 This is a structural schematic diagram of a second embodiment of a pressure ring for improving lens exhaust in the present application. A pressure ring for improving lens exhaust includes a pressure ring body 1, and the pressure ring body 1 forms a plurality of grooves 2 at intervals along the radial direction, so that the sum of the arc lengths s of the grooves along the circumferential direction is less than the circumference of the inner diameter of the pressure ring, that is, <s*n / φE*π<1。
[0064] As shown in Table 2, it is a basic parameter table of a pressure ring for improving lens exhaust in Example 2, wherein the units of the depth a of the groove, the length b of the groove, the outer diameter φE of the pressure ring body, the inner diameter φD of the pressure ring body, and the arc length s of the groove along the circumferential direction are all millimeters (mm). The unit of the number n of grooves is pieces.
[0065] a b φE φD s Number of grooves 0.048 0.33 4.7 4.12 0.34 8
[0066] Table 2
[0067] A pressure ring for improving lens exhaust in Example 2 satisfies:
[0068] s*n / φE*π=0.18.
[0069] 1 / 2*φD=2.06mm, where φD is the inner diameter of the pressing ring body. 0≤b<1 / 2*φD.
[0070] Figure 7 A schematic structural diagram of a pressure ring for improving lens exhaust according to Example 2 is shown, and it can be seen that a plurality of grooves 2 are formed at intervals along the circumferential direction on the pressure ring body 1 . Specific embodiment 3
[0072] Figure 8 This is a structural schematic diagram of embodiment 3 of a pressure ring for improving lens exhaust of the present application. A pressure ring for improving lens exhaust includes a pressure ring body 1, and the pressure ring body 1 forms a plurality of grooves 2 asymmetrically along the radial direction. The number of the grooves 2 can be greater than 2. In this embodiment, the number of the grooves 2 is 1.
[0073] Figure 8 A schematic structural diagram of a pressing ring for improving lens exhaust according to Example 3 is shown, where it can be seen that the groove 2 is asymmetrically formed on the upper part of the pressing ring body 1 . Specific embodiment 4
[0075] Fig. 9 This is a structural schematic diagram of embodiment 4 of a pressure ring for improving lens exhaust of the present application. A pressure ring for improving lens exhaust includes a pressure ring body 1, and the pressure ring body 1 forms two symmetrical grooves 2 along the radial direction. The positions of the grooves 2 are arranged in an axially symmetrical structure. Obviously, the symmetry axis can be x / y / oblique axis, etc.
[0076] Fig. 9 A schematic structural diagram of a pressure ring for improving lens exhaust according to Example 4 is shown. It can be seen that the pressure ring body 1 is formed with two grooves 2, and the two grooves 2 are symmetrically distributed along the x-axis. Specific embodiment 5
[0078] Fig.10 This is a structural schematic diagram of a pressure ring embodiment 5 for improving lens exhaust of the present application. A pressure ring for improving lens exhaust includes a pressure ring body 1, and the pressure ring body 1 forms four symmetrical grooves 2 along the radial direction. The positions of the grooves 2 are arranged in a centrally symmetrical structure.
[0079] Fig.10 A schematic structural diagram of a pressure ring for improving lens exhaust according to Example 5 is shown. It can be seen that the pressure ring body 1 is formed with four grooves 2, and the four grooves 2 are centrally symmetrical structures with respect to the center of the pressure ring. Specific embodiment 6
[0081] Fig.11 This is a structural schematic diagram of embodiment 6 of a pressure ring for improving lens exhaust of the present application. A pressure ring for improving lens exhaust includes a pressure ring body 1, wherein the pressure ring body 1 forms a plurality of grooves 2 at intervals along the radial direction, and the shape between the cross-section of the groove 2 and the outer arc of the pressure ring body 1 is fan-shaped.
[0082] As shown in Table 3, it is a basic parameter table of a pressure ring for improving lens exhaust in Example 6, wherein the units of the depth a of the groove, the length b of the groove, the outer diameter φE of the pressure ring body, the inner diameter φD of the pressure ring body, and the arc length s of the groove along the circumferential direction are all millimeters (mm). The unit of the number n of grooves is pieces.
[0083] a b φE φD s Number of grooves 0.107 1.43 4.7 4.12 1.44 2
[0084] Table 3
[0085] A pressing ring for improving lens exhaust in Example 6 satisfies:
[0086] s*n / φE*π=0.19. Yes: 0≤
[0087] 1 / 2*φD=2.06mm, where φD is the inner diameter of the pressing ring body. 0≤b<1 / 2*φD.
[0088] Fig.11 A schematic structural diagram of a pressure ring for improving lens exhaust according to Example 6 is shown, where a section-shaped groove 2 is formed at the upper and lower parts of the pressure ring body 1, and the shape between the section of the groove 2 and the outer arc of the pressure ring body 1 is fan-shaped. Specific embodiment 7
[0090] Fig.12 This is a structural schematic diagram of Example 7 of a pressure ring for improving lens exhaust of the present application. A pressure ring for improving lens exhaust includes a pressure ring body 1, and the pressure ring body 1 forms a plurality of grooves 2 at intervals along the radial direction, and the cut edge shape of the grooves 2 is an elliptical arc.
[0091] As shown in Table 4, it is a basic parameter table of a pressure ring for improving lens exhaust in Example 7, wherein the units of the depth a of the groove, the length b of the groove, the outer diameter φE of the pressure ring body, the inner diameter φD of the pressure ring body, and the arc length s of the groove along the circumferential direction are all millimeters (mm). The unit of the number n of grooves is pieces.
[0092] a b φE φD s Number of grooves 0.052 1.201 4.7 4.12 1.21 2
[0093] Table 4
[0094] A pressure ring for improving lens exhaust in Example 7 satisfies:
[0095] s*n / φE*π=0.16. Yes: 0≤
[0096] 1 / 2*φD=2.06mm, where φD is the inner diameter of the pressing ring body. 0≤b<1 / 2*φD.
[0097] Fig.12 A schematic structural diagram of a pressure ring for improving lens exhaust according to Example 7 is shown, where grooves 2 are formed at the upper and lower parts of the pressure ring body 1, and the cut edge shape of the grooves 2 is an elliptical arc. Specific embodiment 8
[0099] Fig.13 This is a structural schematic diagram of an embodiment 8 of a pressure ring for improving lens exhaust of the present application. A pressure ring for improving lens exhaust includes a pressure ring body 1, wherein the pressure ring body 1 is provided with a plurality of grooves 2 spaced apart along a radial direction, and the cut edge shape of the grooves 2 is semicircular.
[0100] As shown in Table 5, it is a basic parameter table of a pressure ring for improving lens exhaust in Example 8, wherein the units of the depth a of the groove, the length b of the groove, the outer diameter φE of the pressure ring body, the inner diameter φD of the pressure ring body, and the arc length s of the groove along the circumferential direction are all millimeters (mm). The unit of the number n of grooves is pieces.
[0101] a b φE φD s Number of grooves 0.101 0.44 4.7 4.12 0.45 2
[0102] Table 5
[0103] A pressure ring for improving lens exhaust in Example 8 satisfies:
[0104] s*n / φE*π=0.06. Yes: 0≤
[0105] 1 / 2*φD=2.06mm, where φD is the inner diameter of the pressing ring body. 0≤b<1 / 2*φD.
[0106] Fig.13 A schematic structural diagram of a pressure ring for improving lens exhaust according to Example 8 is shown, where grooves 2 are formed at the upper and lower parts of the pressure ring body 1, and the cut edge shape of the grooves 2 is semicircular. Specific embodiment 9
[0108] Fig.14 This is a structural schematic diagram of a pressure ring embodiment 9 for improving lens exhaust of the present application. A pressure ring for improving lens exhaust includes a pressure ring body 1, and the pressure ring body 1 forms two symmetrical grooves 2 along the radial direction, and the shape of the grooves 2 is a convex shape.
[0109] Fig.14 A schematic structural diagram of a pressure ring for improving lens exhaust according to Example 9 is shown. It can be seen that a groove 2 is formed on the upper and lower parts of the pressure ring body 1 respectively, and the two grooves 2 are in a convex shape. Specific embodiment 10
[0111] Fig.15 This is a structural schematic diagram of an embodiment 10 of a pressure ring for improving lens exhaust of the present application. A pressure ring for improving lens exhaust includes a pressure ring body 1, and the pressure ring body 1 forms two symmetrical grooves 2 along the radial direction, and the shape of the grooves 2 is a concave shape.
[0112] Fig.15 A schematic structural diagram of a pressure ring for improving lens exhaust according to Example 10 is shown. It can be seen that a groove 2 is formed on each side of the pressure ring body 1, and the two grooves 2 are in a concave shape.
[0113] 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 pressure ring for improving lens exhaust, characterized in that: It comprises a pressing ring body, wherein the pressing ring body is formed with a plurality of grooves along the radial direction; The sum of the areas of the grooves S1 satisfies: The area S of the pressing ring body satisfies: S = 1 / 2*(φE-φD)2*π-S1; Among them, b is the length of the groove, f(x) is the expression of the groove notch length, y(x) is the expression of the outer diameter of the pressure ring body, φE is the outer diameter of the pressure ring body, and φD is the inner diameter of the pressure ring body.
2. A pressure ring for improving lens exhaust according to claim 1, characterized in that: The shape of the groove is one of a rectangle, a sector, an ellipse, a concave shape and a convex shape.
3. A pressure ring for improving lens exhaust according to claim 1, characterized in that: The depth a of the groove and the ring width L of the pressure ring body satisfy: 0.05≤a / L<1.
4. A pressure ring for improving lens exhaust according to claim 1, characterized in that: The length b of the groove and the inner diameter φD of the pressing ring body satisfy: 0≤b<1 / 2*φD.
5. The pressure ring for improving lens exhaust according to claim 1, characterized in that: The arc length s of the groove along the circumferential direction and the outer diameter φE of the pressing ring body satisfy: 0≤s≤φE*π.
6. A pressure ring for improving lens exhaust according to claim 1, characterized in that: When the shape of the groove is a concave shape, a first recessed portion and a second recessed portion are respectively formed on both sides of the bottom of the groove, and the length b of the groove, the length b1 of the first recessed portion and the length b2 of the second recessed portion satisfy: b1<0.5b, b2<0.5b; the depth a of the groove and the distance a1 from the bottom of the groove to the top of the groove satisfy: a1≤0.5a.
7. The pressure ring for improving lens exhaust according to claim 1, characterized in that: When the shape of the groove is a convex shape, the groove includes a first section, a recessed area and a second section, the first section and the second section are tangent to the pressing ring body, and the recessed area is formed between the first section and the second section; the length b of the groove and the length b1 of the recessed area satisfy b1<0.8b; the depth a of the groove and the ring width L of the pressing ring body satisfy a <L。 8. The pressure ring for improving lens exhaust according to claim 2, characterized in that: The depth a of the groove and the ring width L of the pressure ring body satisfy: 0.05≤a / L<0.
2.
9. A pressure ring for improving lens exhaust according to claim 4, characterized in that: The length b of the groove and the inner diameter φD of the pressing ring body satisfy: 0≤b<1 / 2*φD<0.5mm.
10. A lens barrel for improving lens exhaust, characterized in that: A pressure ring for improving lens exhaust comprising the pressure ring as described in any one of claims 1 to 9.