A lens structure for preventing water ingress

Abstract

The present invention discloses a lens structure that prevents water from entering, and is characterized in that it comprises: a lens barrel, inside which a P2 lens and a P1 lens are sequentially installed from top to bottom; wherein the contact length between the P1 lens and the side of the lens barrel is H1, the average interference between the lens barrel and the P1 lens is GY1, and the flatness of the positioning surface of the P1 lens is T; the contact length between the P2 lens and the side of the lens barrel is H2; and the average interference between the lens barrel and the P2 lens is GY2. The lens structure of the present invention achieves the purpose of preventing high-pressure water seepage during water washing from entering the interior of the lens through the through hole of the P1 surface by fitting P1 with the positioning surface at the bottom of the lens barrel and compacting P1 with P2, thereby achieving "no water entering P1 and the through hole of the lens barrel"; by improving the last lens / pressing ring at the opening end of the lens barrel and the gluing of the lens barrel, it is achieved that "no water enters the edge of the last lens / pressing ring at the opening end of the lens barrel", thereby achieving a waterproof effect.

Description

Technical Field

[0001] The present invention relates to the technical field of lenses, and more particularly to a lens structure capable of preventing water ingress. Background Art

[0002] In order to meet customers' ever-increasing requirements for lens appearance, lens production must introduce a water washing process and must ensure that water cannot enter the inside of the lens. Water seeping into the lens not only affects the internal appearance but also greatly reduces the imaging effect.

[0003] Therefore, how to provide a lens structure that prevents water from entering is a problem that those skilled in the art need to solve urgently. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a lens structure that prevents water from entering, which not only has a simple structure and a good waterproof effect, but also does not affect the performance of the lens itself.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A lens structure for preventing water ingress, characterized in that it comprises: a lens barrel, inside which a P2 lens and a P1 lens are sequentially installed from top to bottom; wherein the contact length between the P1 lens and the side surface of the lens barrel is H1, the average interference between the lens barrel and the P1 lens is GY1, and the flatness of the positioning surface of the P1 lens is T; the contact length between the P2 lens and the side surface of the lens barrel is H2; and the average interference between the lens barrel and the P2 lens is GY2.

[0007] Preferably, in the above-mentioned lens structure for preventing water ingress, the last lens / pressing ring on the open end of the lens barrel and the inner wall of the lens barrel are fully glued.

[0008] Preferably, in the above-mentioned lens structure for preventing water ingress, the lens satisfies the following conditions: 0.11≤H1≤0.13; GY1 is between 0.002-0.004; T≤0.003; 0.155≤H2≤0.17; GY2 is between 0.01-0.011.

[0009] Preferably, in the above-mentioned lens structure for preventing water ingress, the lens satisfies the following conditions: 0.13

[0010] Preferably, in the above-mentioned lens structure for preventing water ingress, the lens satisfies the following conditions: 0.16<H1; GY1 is between 0.0007-0.0027; T≤0.003; 0.19<H2; GY2 is between 0.008-0.009.​

[0011] It can be seen from the above technical solutions that, compared with the prior art, the lens structure of the present invention allows water to enter through P1 and the lens barrel through hole, thereby achieving the purpose of preventing high-pressure water from seeping into the interior of the lens during water washing, and realizing "no water enters P1 and the lens barrel through hole"; by improving the water entry of the last lens / pressing ring at the opening end of the lens barrel, the last lens / pressing ring edge at the opening end of the lens barrel is prevented from entering, thereby achieving a waterproof effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0013] Figure 1 The accompanying drawing is a schematic structural diagram of the present invention. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] Please see attached Figure 1 , is a lens structure for preventing water ingress disclosed by the present invention, specifically comprising:

[0016] A lens barrel 1, wherein a P2 lens 2 and a P1 lens 3 are sequentially installed inside the lens barrel from top to bottom; wherein the contact length between the P1 lens and the side of the lens barrel is H1, the average interference between the lens barrel and the P1 lens is GY1, and the flatness of the positioning surface of the P1 lens is T; the contact length between the P2 lens and the side of the lens barrel is H2; and the average interference between the lens barrel and the P2 lens is GY2.

[0017] In order to further optimize the above technical solution, the last lens / pressing ring on the open end of the lens barrel and the inner wall of the lens barrel are fully glued.

[0018] In order to further optimize the above technical solution, the lens meets the following conditions: 0.11≤H1≤0.13; GY1 is between 0.002-0.004; T≤0.003; 0.155≤H2≤0.17; GY2 is between 0.01-0.011.

[0019] In order to further optimize the above technical solution, the lens meets the following conditions: 0.13

[0020] In order to further optimize the above technical solution, the lens meets the following conditions: 0.16

[0021] The technical problems to be solved by the present invention are:

[0022] 1. To improve the appearance, the industry has introduced pure water cleaning technology. During the washing process, high-pressure water will enter from: P1 lens and lens barrel through hole; the last lens / pressure ring edge at the opening end of the lens barrel;

[0023] 2. Countermeasures:

[0024] 2.1 Improve the water ingress between P1 and the lens barrel through hole;

[0025] 2.1.1 Through a large number of verifications, in order to solve the problem of water ingress to the P1 lens surface, the matching length H1 between the P1 lens and the lens barrel, the interference GY1 between the lens barrel and the P1 lens, and the flatness T of the P1 positioning surface of the lens barrel need to meet the requirements of the following Table 1, and the matching length H2 between the P2 lens and the lens barrel, and the interference GY2 between the lens barrel and the P2 lens need to meet the requirements of the following Table 2.

[0026] Table 1 Unit: mm

[0027] P1 lens and the side contact length of the lens barrel H1 Average interference between lens barrel and lens GY1 Flatness T 0.11≤H1≤0.13 0.002-0.004 ≤0.003 0.13＜H1≤0.16 0.0012-0.0034 ≤0.003 0.16＜H1 0.0007-0.0027 ≤0.003

[0028] Table 2 Unit: mm

[0029] P2 lens and the side contact length of the lens barrel H2 Average interference between lens barrel and lens GY2 0.155≤H2≤0.17 0.01-0.011 0.17＜H2≤0.19 0.009-0.01 0.19＜H2 0.008-0.009

[0030] 2.1.2 Technical requirements purpose description:

[0031] A. It is mainly to fit and seal P1 with the lens barrel, so the interference of P1 is required to be small and the flatness of P1 positioning surface should be good;

[0032] B. Because the interference of P1 is small, when washing with water, the impact of water will push P1 up, so the interference of P2 is increased to achieve the goal of pressing P1 with P2, and P1 cannot be lifted up by water to cause water seepage;

[0033] C.Meeting the parameter requirements of Table 1 and Table 2 at the same time can achieve the purpose of preventing high-pressure water from seeping into the interior of the lens during water washing, and realize "no water entering P1 and the lens barrel through hole".

[0034] ​​2.2 Improve the problem of water entering the last lens / pressing ring at the opening end of the lens barrel

[0035] 2.2.1 Glue the opening end of the lens barrel and the lens / pressure ring. The specific requirements are as follows:

[0036] A. Glue quantity control: glue must be dispensed in a full circle without less glue or glue breakage; there must be no glue hole at the last lens or the cut of the pressing ring;

[0037] B. Visually monitor the dispensing effect. If there is glue breakage or glue holes, adjustments must be made immediately to ensure full glue and no glue holes.

[0038] C. By fully gluing the last lens / pressing ring at the opening end of the lens barrel and the inner wall of the lens barrel and meeting the requirements of 2.2.1, it can be achieved that "the edge of the last lens / pressing ring at the opening end of the lens barrel does not get water in".

[0039] 2.3 Through the countermeasures of 2.1 and 2.2, it is achieved that "P1 and the through hole of the lens barrel are water-proof" and "the last lens at the opening end of the lens barrel / the edge of the pressure ring are water-proof".

[0040] Comparative Example 1: The parameters of P1 lens and P2 lens are as follows:

[0041] P1 lens and the side contact length of the lens barrel H1 Average interference between lens barrel and P1 lens GY1 Flatness T H1＝0.11 0.008 0.003

[0042] P2 lens and the side contact length of the lens barrel H2 Average interference between lens barrel and P2 lens GY2 H2＝0.17 0.008

[0043] The last lens is fully sealed with glue on the lens barrel;

[0044] Water ingress rate between P1 and lens barrel through hole: 96.7%;

[0045] Water ingress rate between the last lens and the lens barrel: 0%; In summary: Fully sealing the lens barrel opening by glue can prevent water from ingress between the last lens and the edge of the lens barrel; P1 cannot solve the problem of water ingress between P1 and the lens barrel through-hole according to the above parameter countermeasures.

[0046] Comparative Example 2: The parameters of P1 lens and P2 lens are as follows:

[0047] P1 lens and the side contact length of the lens barrel H1 Average interference between lens barrel and P1 lens GY1 Flatness T H1＝0.11 0.008 0.0012

[0048] P2 lens and the side contact length of the lens barrel H2 Average interference between lens barrel and P2 lens GY2 H2＝0.17 0.008

[0049] The last lens is fully sealed with glue on the lens barrel;

[0050] Water ingress rate between P1 and lens barrel through hole: 91.3%;

[0051] The water ingress rate between the last lens and the lens barrel: 0%; In summary, gluing and fully sealing the opening end of the lens barrel can prevent water from entering the last lens and the edge of the lens barrel; P1 cannot solve the problem of water entering the through hole of P1 and the lens barrel according to the above parameter countermeasures, but the flatness T0.0012 is slightly better than 0.003, indicating that the flatness T of the positioning surface of P1 is smaller and better.

[0052] Comparative Example 3: The parameters of P1 lens and P2 lens are as follows:

[0053] P1 lens and the side contact length of the lens barrel H1 Average interference between lens barrel and P1 lens GY1 Flatness T H1＝0.11 0.003 0.0012

[0054] P2 lens and the side contact length of the lens barrel H2 Average interference between lens barrel and P2 lens GY2 H2＝0.17 0.008

[0055] The last lens is fully sealed with glue on the lens barrel;

[0056] Water ingress rate between P1 and lens barrel through hole: 21.6%;

[0057] The water ingress rate between the last lens and the lens barrel: 0%; In summary, gluing and fully sealing the opening end of the lens barrel can prevent water from entering the last lens and the edge of the lens barrel; According to the above parameter countermeasures for P1, water ingress between P1 and the lens barrel through hole cannot be solved, but the interference fit of P1 is 0.003, which is better than 0.008, indicating that a smaller interference fit of P1 is better.

[0058] Comparative Example 4: The parameters of P1 lens and P2 lens are as follows:

[0059] P1 lens and the side contact length of the lens barrel H1 Average interference between lens barrel and P1 lens GY1 Flatness T H1＝0.11 0.003 0.003

[0060] P2 lens and the side contact length of the lens barrel H2 Average interference between lens barrel and P2 lens GY2 H2＝0.17 0.009

[0061] The last lens is fully sealed with glue on the lens barrel;

[0062] Water ingress rate between P1 and lens barrel through hole: 10.3%;

[0063] Water ingress rate between the last lens and the lens barrel: 0%; In summary, fully sealing the opening end of the lens barrel by glue can prevent water from entering the last lens and the edge of the lens barrel; According to the above parameter countermeasures for P1, water ingress between P1 and the lens barrel through hole cannot be solved, but the interference fit of P2 is 0.009, which is better than 0.008, indicating that the interference fit of P2 is very good.

[0064] Example 1: The parameters of P1 lens and P2 lens are as follows:

[0065] P1 lens and the side contact length of the lens barrel H1 Average interference between lens barrel and P1 lens GY1 Flatness T H1＝0.11 0.002 0.003

[0066] P2 lens and the side contact length of the lens barrel H2 Average interference between lens barrel and P2 lens GY2 H2＝0.17 0.010

[0067] The last lens is fully sealed with glue on the lens barrel;

[0068] Water ingress rate between P1 and lens barrel through hole: 0%;

[0069] Water ingress rate between the last lens and the lens barrel: 0%; Conclusion: Fully sealing the lens barrel opening by glue can prevent water from ingressing between the last lens and the edge of the lens barrel; P1P2 can solve the problem of water ingress between P1 and the lens barrel through hole according to the above parameter countermeasures.

[0070] Example 2: The parameters of the P1 lens and the P2 lens are as follows:

[0071] P1 lens and the side contact length of the lens barrel H1 Average interference between lens barrel and P1 lens GY1 Flatness T H1＝0.11 0.002 0.003

[0072] P2 lens and the side contact length of the lens barrel H2 Average interference between lens barrel and P2 lens GY2 H2＝0.155 0.010

[0073] The last lens is fully sealed with glue on the lens barrel;

[0074] Water ingress rate between P1 and lens barrel through hole: 0%;

[0075] Water ingress rate between the last lens and the lens barrel: 0%; Conclusion: Fully sealing the lens barrel opening by gluing can prevent water from ingressing between the last lens and the edge of the lens barrel; P1P2 can solve the problem of water ingress between P1 and the lens barrel through hole according to the above parameter countermeasures.

[0076] Example 3: The parameters of P1 lens and P2 lens are as follows:

[0077] P1 lens and the side contact length of the lens barrel H1 Average interference between lens barrel and P1 lens GY1 Flatness T H1＝0.11 0.004 0.003

[0078] P2 lens and the side contact length of the lens barrel H2 Average interference between lens barrel and P2 lens GY2 H2＝0.155 0.010

[0079] The last lens is fully sealed with glue on the lens barrel;

[0080] Water ingress rate between P1 and lens barrel through hole: 0%;

[0081] Water ingress rate between the last lens and the lens barrel: 0%; Conclusion: Fully sealing the lens barrel opening by glue can prevent water from ingressing between the last lens and the edge of the lens barrel; P1P2 can solve the problem of water ingress between P1 and the lens barrel through hole according to the above parameter countermeasures.

[0082] Example 4: The parameters of the P1 lens and the P2 lens are as follows:

[0083] P1 lens and the side contact length of the lens barrel H1 Average interference between lens barrel and P1 lens GY1 Flatness T H1＝0.11 0.004 0.003

[0084] P2 lens and the side contact length of the lens barrel H2 Average interference between lens barrel and P2 lens GY2 H2＝0.155 0.010

[0085] The last lens is fully sealed with glue on the lens barrel;

[0086] Water ingress rate between P1 and lens barrel through hole: 0%;

[0087] Water ingress rate between the last lens and the lens barrel: 0%; Conclusion: Fully sealing the lens barrel opening by glue can prevent water from ingressing between the last lens and the edge of the lens barrel; P1P2 can solve the problem of water ingress between P1 and the lens barrel through hole according to the above parameter countermeasures.

[0088] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0089] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A lens structure for preventing water ingress, characterized in that , including: a lens barrel, where a P2 lens and a P1 lens are sequentially installed from top to bottom inside the lens barrel; among them, the contact length between the P1 lens and the side of the lens barrel is H1, the average interference between the lens barrel and the P1 lens is GY1, and the flatness of the positioning surface of the P1 lens is T; the contact length between the P2 lens and the side of the lens barrel is H2; the average interference between the lens barrel and the P2 lens is GY2; This lens meets any of the following conditions: Condition 1: 0.11 ≤ H1 ≤ 0.13; GY1 is between 0.002 and 0.004; T ≤ 0.003; 0.155 ≤ H2 ≤ 0.17; GY2 is between 0.01 and 0.011; Condition 2: 0.13 < H1 ≤ 0.16; GY1 is between 0.0012 and 0.0034; T ≤ 0.003; 0.17 < H2 ≤ 0.19; GY2 is between 0.009 and 0.01; Condition 3: 0.16 < H1; GY1 is between 0.0007 and 0.0027; T ≤ 0.003; 0.19 < H2; GY2 is between 0.008 and 0.

009.

2. A lens structure for preventing water ingress according to claim 1, characterized in that , the last lens / ring on the open end of the lens barrel and the inner wall of the lens barrel are fully glued.

Images