Sealing pressing ring and optical lens

Abstract

The utility model provides a sealing pressing ring and an optical lens, the sealing pressing ring is used for sealing and fixing the second end of the optical lens, the outer ring surface of the sealing pressing ring is provided with a dispensing ring surface and a trimming ring surface from the first side to the second side of the optical lens, and the dispensing ring surface is arranged close to the optical axis of the optical lens relative to the trimming ring surface. An injection molding sprue is formed in the edge cutting ring surface, the maximum thickness L4 of the sealing pressing ring in the direction parallel to the optical axis meets the condition that L4 is larger than 0.5 mm, the length L2 of the adhesive dispensing ring surface in the direction parallel to the optical axis meets the condition that 0.2 mm < = L2 < = 0.3 mm, and the length L1 of the edge cutting ring surface in the direction parallel to the optical axis meets the condition that 0.2 mm < = L1 < = 0.5 mm. The utility model solves the problem that the injection molding rubber port of the front end pressing ring of the lens structure is not sealed tightly.

Description

Technical Field

[0001] The utility model relates to the field of optical lenses, in particular to a sealing pressure ring and an optical lens. Background Art

[0002] With the development of optical lenses, their usage scenarios and environments have gradually changed from single to complex, so the requirements for reliability have become increasingly stringent. Among them, the sealing and water washing performance is a key indicator and its role cannot be ignored. At present, due to the existence of the injection molding port of the pressure ring, it is easy to be loosely sealed after dispensing, and the lens structure is at risk of water ingress.

[0003] That is to say, the optical lens in the prior art has the problem of poor sealing. Utility Model Content

[0004] The main purpose of the utility model is to provide a sealing pressure ring and an optical lens to solve the problem of poor sealing performance of the optical lens in the prior art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a sealing pressure ring is provided, which is used to seal and fix on the second end of the optical lens. From the first side to the second side of the optical lens, the outer ring surface of the sealing pressure ring has a glue-dotting ring surface and a trimming ring surface. The glue-dotting ring surface is arranged close to the optical axis of the optical lens relative to the trimming ring surface, and the trimming ring surface has an injection molding gate. The maximum thickness L4 of the sealing pressure ring along the direction parallel to the optical axis satisfies: L4>0.5mm, the length L2 of the glue-dotting ring surface along the direction parallel to the optical axis satisfies: 0.2mm≤L2≤0.3mm, and the length L1 of the trimming ring surface along the direction parallel to the optical axis satisfies: 0.2mm≤L1≤0.5mm.

[0006] Furthermore, a distance L7 between the glue dispensing annular surface and the trimming annular surface in a direction perpendicular to the optical axis satisfies: 0.08mm≤L7≤0.2mm.

[0007] According to another aspect of the utility model, an optical lens is provided, comprising the above-mentioned sealing pressure ring, a lens barrel and at least one lens, the sealing pressure ring and the lens are both accommodated in the lens barrel, the sealing pressure ring is supported against the second side surface of the lens on the second side closest to the optical lens, the inner wall surface of the lens barrel has a matching annular surface extending in a direction parallel to the optical axis of the optical lens, and the matching annular surface is fixed to the glue-pointing annular surface of the sealing pressure ring by glue.

[0008] Furthermore, a maximum distance L3 between the trimming annular surface and the inner wall surface of the lens barrel in a direction perpendicular to the optical axis satisfies: 0.1 mm < L3 < 0.3 mm.

[0009] Furthermore, the inner wall surface of the lens barrel also has a first step surface extending perpendicular to the optical axis direction, and the first step surface is connected to the second side of the mating ring surface. The outer ring surface of the sealing pressure ring also has a connecting surface extending perpendicular to the optical axis direction. The two ends of the connecting surface are respectively connected to the glue dot ring surface and the trimming ring surface. The distance L5 between the connecting surface and the first step surface along the direction parallel to the optical axis satisfies: 0.05mm<L5<0.1mm.

[0010] Furthermore, the inner wall surface of the lens barrel also has a second step surface extending perpendicular to the optical axis direction, the second step surface is located on the first side of the first step surface, at least a portion of the first side surface of the sealing pressure ring is spaced apart from the second step surface, and the spacing length L6 between at least a portion of the first side surface of the sealing pressure ring and the second step surface satisfies: 0.05mm<L6<0.1mm.

[0011] Furthermore, the inner ring surface of the sealing pressure ring has a first ring surface, which is connected to the first side surface of the sealing pressure ring. From the first side to the second side of the optical lens, the first ring surface extends in the direction close to the optical axis. The maximum distance L8 between the first ring surface and the first side surface of the sealing pressure ring along the direction parallel to the optical axis satisfies: 0.01mm≤L8≤0.03mm.

[0012] Further, a shortest distance L9 between the first annular surface and the second side surface of the lens closest to the second side of the optical lens along a direction perpendicular to the optical axis satisfies: 0.01 mm≤L9≤0.03 mm.

[0013] By applying the technical solution of the utility model, the sealing pressure ring is used to be sealed and fixed on the second end of the optical lens. In the direction from the first side to the second side of the optical lens, the outer ring surface of the sealing pressure ring is provided with a glue-dotting ring surface and a trimming ring surface. The glue-dotting ring surface is arranged close to the optical axis of the optical lens relative to the trimming ring surface. The trimming ring surface is provided with an injection molding gate. The maximum thickness L4 of the sealing pressure ring along the direction parallel to the optical axis satisfies: L4>0.5mm, the length L2 of the glue-dotting ring surface along the direction parallel to the optical axis satisfies: 0.2mm≤L2≤0.3mm, and the length L1 of the trimming ring surface along the direction parallel to the optical axis satisfies: 0.2mm≤L1≤0.5mm. The sealing ring provided by the present application can cooperate with the lens barrel to form a sealing structure. By optimizing the structure and size of the sealing ring, L4, L2 and L1 are controlled within a reasonable range to ensure that the trimming ring surface is closer to the second end of the optical lens than the glue dispensing ring surface while ensuring processing and forming. At the same time, the step difference between the trimming ring surface and the glue dispensing ring surface is used to give way to the glue dispensing, avoiding the glue dispensing near the injection molding gate, thereby avoiding the problem of glue seepage from the injection molding gate and the trimming gap when only dispensing on the trimming ring surface, resulting in poor sealing. The waterproof effect is improved by sealing the glue dispensing along the entire circle of the glue dispensing ring surface, and the glue and the glue dispensing ring surface can be fully contacted, further improving the sealing effect. In addition, the step difference between the trimming ring surface and the glue dispensing ring surface can block the external water in the direction close to the second end of the optical lens, avoiding the water outside the lens from directly impacting the glue dispensing position, and improving the connection and sealing stability of the sealing ring. It is also beneficial to improve the dustproof effect and reduce dust intrusion into the lens interior. Among them, since the injection gate is designed on the trimmed ring surface, the axial length L1 of the trimmed ring surface is controlled within a reasonable range, which can ensure that the injection gate has enough space for processing and molding. Since the sealing pressure ring is fixed by glue on the glue-dispensing ring surface, by controlling the axial length of the glue-dispensing ring surface within a reasonable range, a sufficient adhesion area is guaranteed to ensure the sealing and connection stability of the sealing pressure ring. The axial thickness of the sealing pressure ring is controlled within a reasonable range to ensure the processability and structural stability of the sealing pressure ring, and to avoid the structural deformation of the sealing pressure ring affecting the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0015] Figure 1 A partial structural schematic diagram of an optical lens of an optional embodiment of the utility model is shown;

[0016] Figure 2 Shows Figure 1 A schematic diagram of the structure of the sealing pressure ring;

[0017] Figure 3 Shows Figure 1 Schematic diagram of some parameters of the sealing pressure ring;

[0018] Figure 4 Shows Figure 1 Schematic diagram of another part of the parameters of the sealing pressure ring;

[0019] Figure 5 Shows Figure 1 Magnified detail of part A.

[0020] The above drawings include the following reference numerals:

[0021] 10. Trimming annular surface; 11. Injection molding gate; 20. Glue dispensing annular surface; 30. Lens barrel; 31. Matching annular surface; 32. First step surface; 33. Second step surface; 40. Connection surface; 50. First annular surface. DETAILED DESCRIPTION

[0022] 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 present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0024] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0025] In the present application, the first side of the optical lens refers to the side that is assembled first, and the second side of the optical lens refers to the side that is assembled last, that is, the lens and the pressing ring are assembled into the lens barrel from the second side to the first side.

[0026] In order to solve the problem of poor sealing of optical lenses in the prior art, the utility model provides a sealing pressure ring and an optical lens.

[0027] like Figures 1 to 5As shown, the sealing pressure ring is used to seal and fix on the second end of the optical lens. From the first side to the second side of the optical lens, the outer ring surface of the sealing pressure ring has a glue-dispensing ring surface 20 and a trimming ring surface 10. The glue-dispensing ring surface 20 is arranged close to the optical axis of the optical lens relative to the trimming ring surface 10, and the trimming ring surface 10 has an injection molding gate 11. The maximum thickness L4 of the sealing pressure ring in the direction parallel to the optical axis satisfies: L4>0.5mm, the length L2 of the glue-dispensing ring surface 20 in the direction parallel to the optical axis satisfies: 0.2mm≤L2≤0.3mm, and the length L1 of the trimming ring surface 10 in the direction parallel to the optical axis satisfies: 0.2mm≤L1≤0.5mm.

[0028] The sealing ring provided by the present application can cooperate with the lens barrel 30 to form a sealing structure. By optimizing the structure and size of the sealing ring, L4, L2 and L1 are controlled within a reasonable range. While ensuring the processing and forming, the trimming ring surface 10 is closer to the second end of the optical lens than the glue-dispensing ring surface 20. At the same time, the step difference between the trimming ring surface 10 and the glue-dispensing ring surface 20 is used to give way to the glue-dispensing, avoiding the glue-dispensing near the injection gate 11, thereby avoiding the problem of glue-seeping from the injection gate 11 and the trimming gap when only glue-dispensing on the trimming ring surface 10 leads to poor sealing. The waterproof effect is improved by sealing the glue-dispensing along the glue-dispensing ring surface 20. At the same time, the glue and the glue-dispensing ring surface 20 can be fully contacted, further improving the sealing effect. In addition, the step difference between the trimming ring surface 10 and the glue-dispensing ring surface 20 can block the water from the outside in the direction close to the second end of the optical lens, avoiding the water outside the lens from directly impacting the glue-dispensing position, and improving the connection and sealing stability of the sealing ring. It is also beneficial to improve the dustproof effect and reduce dust intrusion into the lens. Among them, since the injection gate 11 is designed on the trimming annular surface 10, the axial length L1 of the trimming annular surface 10 is controlled within a reasonable range, which can ensure that the injection gate 11 has enough space for processing and molding. Since the sealing pressure ring is fixed by glue dispenser on the glue dispenser annular surface 20, by controlling the axial length of the glue dispenser annular surface 20 within a reasonable range, a sufficient adhesion area is guaranteed, and the sealing and connection stability of the sealing pressure ring are guaranteed. The axial thickness of the sealing pressure ring is controlled within a reasonable range to ensure the processability and structural stability of the sealing pressure ring, and to avoid the structural deformation of the sealing pressure ring affecting the sealing effect. In particular, for lenses that use hydrosol glue dispenser and have strict requirements for sealing and waterproofing, the use of the sealing pressure ring of the present application can well solve the problem of poor sealing of the lens after glue dispenser.

[0029] It should be noted that the sealing pressure ring of the present application rests on the structural part of the lens closest to the second side and will not hinder the passage of imaging light.

[0030] like Figure 4As shown, the distance L7 between the glue-dispensing annular surface 20 and the trimming annular surface 10 in the direction perpendicular to the optical axis satisfies: 0.08mm≤L7≤0.2mm. By controlling L7 within a reasonable range, the blocking effect of external water and dust is improved, ensuring good sealing.

[0031] It should be noted that L7 is not infinite, but the range of L7 should be controlled under the premise of ensuring the radial thickness of the sealing ring to ensure the structural stability of the sealing ring.

[0032] The present application also provides an optical lens having the above-mentioned sealing pressure ring, the optical lens also includes a lens barrel 30 and at least one lens, the sealing pressure ring and the lens are both accommodated in the lens barrel 30, the sealing pressure ring is supported against the second side surface of the lens closest to the second side of the optical lens, the inner wall surface of the lens barrel 30 has a matching annular surface 31 extending in a direction parallel to the optical axis of the optical lens, and the matching annular surface 31 is fixed to the glue-pointing annular surface 20 of the sealing pressure ring by glue-pointing. The glue-pointing annular surface 20 is supported on the matching annular surface 31, and a closed connection is achieved after the glue-pointing fixation, and the sealing pressure ring and the lens barrel 30 form a sealed structure, which has the basic performance of waterproofing, and meets the use of the optical lens in more scenarios.

[0033] like Figure 3 As shown, the maximum distance L3 between the trimming annular surface 10 and the inner wall surface of the lens barrel 30 in the direction perpendicular to the optical axis satisfies: 0.1mm<L3<0.3mm. A certain distance is set between the trimming annular surface 10 and the inner wall surface of the lens barrel 30. By controlling L3 within a reasonable range, sufficient space is left for the dispensing operation.

[0034] like Figures 1 to 5 As shown, the inner wall surface of the lens barrel 30 also has a first step surface 32 extending perpendicularly to the optical axis direction, and the first step surface 32 is connected to the second side of the matching annular surface 31. The outer annular surface of the sealing pressure ring also has a connecting surface 40 extending perpendicularly to the optical axis direction. The two ends of the connecting surface 40 are respectively connected to the glue-dispensing annular surface 20 and the trimming annular surface 10. The distance L5 between the connecting surface 40 and the first step surface 32 along the direction parallel to the optical axis satisfies: 0.05mm<L5<0.1mm. By setting the first step surface 32 extending perpendicularly to the optical axis direction, and cooperating with the connecting surface 40 extending perpendicularly to the optical axis direction, the glue can be guided to flow to the glue-dispensing annular surface 20. By controlling the axial distance between the connecting surface 40 and the first step surface 32, the sealing pressure ring is prevented from colliding with the lens barrel 30 during the assembly process, ensuring the stability during assembly, and achieving the effect of preventing interference.

[0035] like Figures 1 to 5As shown, the inner wall surface of the lens barrel 30 also has a second step surface 33 extending perpendicular to the optical axis direction, the second step surface 33 is located on the first side of the first step surface 32, at least a portion of the first side surface of the sealing pressure ring is spaced from the second step surface 33, and the interval length L6 between at least a portion of the first side surface of the sealing pressure ring and the second step surface 33 satisfies: 0.05mm<L6<0.1mm. By controlling the interval L6 within a reasonable range, the first side surface of the sealing pressure ring will not collide with the lens barrel 30 when the sealing pressure ring is assembled, thereby achieving the effect of preventing interference.

[0036] like Figures 1 to 5 As shown, the inner ring surface of the sealing pressure ring has a first ring surface 50, and the first ring surface 50 is connected to the first side surface of the sealing pressure ring. From the first side to the second side of the optical lens, the first ring surface 50 extends toward the direction close to the optical axis, and the maximum distance L8 between the first ring surface 50 and the first side surface of the sealing pressure ring in the direction parallel to the optical axis satisfies: 0.01mm≤L8≤0.03mm. The first ring surface 50 faces the lens closest to the second side of the optical lens. By controlling L8 within a reasonable range, the sealing pressure ring can be effectively prevented from interfering with the lens, and the sealing pressure ring can be prevented from causing pressure on the second side of the lens. In addition, stray light can be intercepted to reduce the transmission of non-imaging light.

[0037] like Figure 4 As shown, the shortest distance L9 between the first annular surface and the second side surface of the lens closest to the second side of the optical lens in the direction perpendicular to the optical axis satisfies: 0.01mm≤L9≤0.03mm. There is a gap between the first annular surface and the second side surface of the lens closest to the second side of the optical lens in the direction perpendicular to the optical axis, which can effectively prevent the sealing pressure ring from touching the second side surface of the lens closest to the second side of the optical lens, thereby avoiding damage to the lens by the sealing pressure ring.

[0038] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0039] 1. By optimizing the structure and size of the sealing pressure ring, the trimming ring surface 10 is closer to the second end of the optical lens than the glue dispensing ring surface 20. At the same time, the step difference between the trimming ring surface 10 and the glue dispensing ring surface 20 is used to make way for glue dispensing, avoiding glue dispensing near the injection gate 11, thereby avoiding the problem of glue seeping from the injection gate 11 when only dispensing glue on the trimming ring surface 10, resulting in poor sealing.

[0040] 2. The waterproof effect is improved by sealing the entire circle of the glue-dispensing ring surface 20. At the same time, the glue and the glue-dispensing ring surface 20 can be fully in contact, further improving the sealing effect.

[0041] 3. The step difference between the trimming annular surface 10 and the glue dispensing annular surface 20 can block the external water in the direction close to the second end of the optical lens, preventing the water outside the lens from directly impacting the glue dispensing position, thereby improving the connection and sealing stability of the sealing pressure ring. It is also beneficial to improve the dustproof effect and reduce the dust from invading the inside of the lens.

[0042] 4. The glue-applied annular surface 20 rests on the mating annular surface 31, and a closed connection is achieved after being glued and fixed. The sealing pressure ring and the lens barrel 30 form a sealed structure, which has the basic waterproof performance.

[0043] The design of trimming the ring surface 10 after the glue dispensing ring surface 20 is applied, and the design cooperates with the lens barrel 30 to greatly improve the waterproof effect. At the same time, the injection gate trimming design is performed on the cut ring surface to avoid the glue seepage phenomenon that occurs after the gate trimming is applied in the conventional design. Especially for lenses that use hydrosol glue dispensing and have strict requirements for sealing and waterproofing, the problem of loose sealing after the lens is applied is solved.

[0044] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0045] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0046] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0047] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A sealing pressing ring, characterized in that: The sealing pressure ring is used for sealing and fixing on the second end of the optical lens. In the direction from the first side to the second side of the optical lens, the outer ring surface of the sealing pressure ring has a glue-dispensing ring surface (20) and a trimming ring surface (10). The glue-dispensing ring surface (20) is arranged close to the optical axis of the optical lens relative to the trimming ring surface (10). The trimming ring surface (10) has an injection molding gate (11). The maximum thickness L4 of the sealing pressure ring in the direction parallel to the optical axis satisfies: L4>0.5mm, the length L2 of the glue-dispensing ring surface (20) in the direction parallel to the optical axis satisfies: 0.2mm≤L2≤0.3mm, and the length L1 of the trimming ring surface (10) in the direction parallel to the optical axis satisfies: 0.2mm≤L1≤0.5mm.

2. The sealing pressure ring according to claim 1, characterized in that: A distance L7 between the glue-dotting annular surface (20) and the trimming annular surface (10) along a direction perpendicular to the optical axis satisfies the following: 0.08 mm ≤ L7 ≤ 0.2 mm.

3. An optical lens, characterized in that: The invention comprises a sealing pressure ring, a lens barrel (30) and at least one lens as described in any one of claims 1 to 2, wherein the sealing pressure ring and the lens are both accommodated in the lens barrel (30), the sealing pressure ring is supported against the second side surface of the lens on the second side closest to the optical lens, the inner wall surface of the lens barrel (30) has a matching annular surface (31) extending in a direction parallel to the optical axis of the optical lens, and the matching annular surface (31) is fixed to the glue-dispensing annular surface (20) of the sealing pressure ring by glue.

4. The optical lens according to claim 3, characterized in that: The maximum distance L3 between the trimming annular surface (10) and the inner wall surface of the lens barrel (30) in a direction perpendicular to the optical axis satisfies: 0.1 mm < L3 < 0.3 mm.

5. The optical lens according to claim 3, characterized in that: The inner wall surface of the lens barrel (30) also has a first step surface (32) extending perpendicularly to the optical axis direction, and the first step surface (32) is connected to the second side of the matching annular surface (31). The outer annular surface of the sealing pressure ring also has a connecting surface (40) extending perpendicularly to the optical axis direction, and the two ends of the connecting surface (40) are respectively connected to the glue-dotting annular surface (20) and the trimming annular surface (10), and the distance L5 between the connecting surface (40) and the first step surface (32) along the direction parallel to the optical axis satisfies: 0.05mm<L5<0.1mm.

6. The optical lens according to claim 5, characterized in that: The inner wall surface of the lens barrel (30) also has a second step surface (33) extending perpendicular to the optical axis direction, the second step surface (33) is located on the first side of the first step surface (32), at least a portion of the first side surface of the sealing pressure ring is spaced apart from the second step surface (33), and a spacing length L6 between at least a portion of the first side surface of the sealing pressure ring and the second step surface (33) satisfies: 0.05mm<L6<0.1mm.

7. The optical lens according to claim 3, characterized in that: The inner ring surface of the sealing pressure ring has a first ring surface (50), the first ring surface (50) is connected to the first side surface of the sealing pressure ring, and the first ring surface (50) extends in a direction close to the optical axis from the first side to the second side of the optical lens. The maximum distance L8 between the first ring surface (50) and the first side surface of the sealing pressure ring along the direction parallel to the optical axis satisfies: 0.01mm≤L8≤0.03mm.

8. The optical lens according to claim 7, characterized in that: The shortest distance L9 between the first annular surface (50) and the second side surface of the lens closest to the second side of the optical lens along a direction perpendicular to the optical axis satisfies: 0.01 mm≤L9≤0.03 mm.

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