Dustproof and waterproof lens structure

Abstract

The utility model relates to a lens technical field especially is related to a dustproof waterproof lens structure, including front end protection subassembly, lens barrel, first lens, second lens, third lens and fourth lens, the front end protection subassembly includes with the press -fit ring of lens barrel cover setting connection, protection lens, the top end face of press -fit ring is equipped with first sealant layer, and the protection lens is through first sealant layer and is fixedly connected in the top of press -fit ring, the lens barrel outside wall with press -fit ring bottom between being equipped with second sealant layer, the first lens top end edge with the inside wall between lens barrel top department is equipped with third sealant layer, the second lens bottom end edge with the inside wall between lens barrel middle department is equipped with fourth sealant layer, the fourth lens bottom end edge with the inside wall between lens barrel bottom is equipped with fifth sealant layer, the utility model provides a dustproof waterproof lens structure, has realized good dustproof waterproof performance, has guaranteed the normal use and imaging quality of lens under complex environment.

Description

Technical Field

[0001] This utility model relates to the field of lens technology, and in particular to a dustproof and waterproof lens structure. Background Technology

[0002] Currently, with the widespread application of various smart devices and monitoring equipment, the application scenarios for lenses are becoming increasingly complex and diverse. Whether it is automotive lenses, security lenses, or action camera lenses in outdoor environments, high requirements are placed on the dustproof and waterproof performance of lenses.

[0003] Currently, most security lenses rely on basic sealing methods for dust and water resistance, lacking specialized reinforcement structures. During use, dust can easily enter the lens, adhering to the lens elements and affecting image quality; moisture can also easily seep in, causing lens fogging and component damage. The failure rate is higher in humid environments. Furthermore, while some lenses do have protective structures, their construction is complex or contains defects. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a dustproof and waterproof lens structure that achieves good dustproof and waterproof performance, ensuring normal use and imaging quality of the lens in complex environments.

[0005] The present invention adopts the following technical solution:

[0006] A dustproof and waterproof lens structure includes a lens body, which includes a front protection component, a lens barrel, and a first lens, a second lens, a third lens, and a fourth lens stacked sequentially inside the lens barrel along its axial direction. The front protection component includes a pressure ring sleeved and connected to the lens barrel, and a protective lens. A first sealing layer is provided on the top end face of the pressure ring, and the protective lens is fixed to the top of the pressure ring through the first sealing layer. A second sealing layer is provided between the outer wall of the lens barrel and the bottom of the pressure ring. A third sealing layer is provided between the top edge of the first lens and the top inner wall of the lens barrel. A fourth sealing layer is provided between the bottom edge of the second lens and the middle inner wall of the lens barrel. A fifth sealing layer is provided between the bottom edge of the fourth lens and the bottom inner wall of the lens barrel.

[0007] A further improvement to the above technical solution is that the top end face of the pressing ring is provided with a first adhesive groove, which is used to accommodate a first sealing adhesive layer; the bottom inner sidewall of the pressing ring is provided with a first inclined surface, and a second adhesive groove is formed between the first inclined surface and the outer sidewall of the lens barrel, which is used to accommodate a second sealing adhesive layer.

[0008] A further improvement to the above technical solution is that the lens barrel is either a metal lens barrel or an injection-molded lens barrel; and the pressing ring is either a metal pressing ring or an injection-molded pressing ring.

[0009] A further improvement to the above technical solution is that the first lens, the second lens, the third lens, the fourth lens, and the protective lens are all one of glass lenses or injection-molded lenses.

[0010] A further improvement to the above technical solution is that the third lens and the fourth lens are both single lenses, cemented lenses, or snap-fit ​​lenses.

[0011] A further improvement to the above technical solution is that the top of the lens barrel is provided with a first mounting cavity for accommodating the first lens, the top inner wall of the first mounting cavity is provided with a second inclined surface, and the second inclined surface and the top edge of the first lens form a third adhesive groove, the third adhesive groove being used to accommodate a third sealing adhesive layer.

[0012] A further improvement to the above technical solution is that the middle part of the lens barrel is provided with a second mounting cavity for accommodating the second lens, and the top of the second mounting cavity is provided with a first annular limiting boss, which is used to axially limit the second lens.

[0013] A further improvement to the above technical solution is that the lower inner wall of the first annular limiting boss is provided with a third inclined surface, and the third inclined surface and the second lens form a fourth adhesive groove for accommodating the fourth sealing adhesive layer.

[0014] A further improvement to the above technical solution is that the bottom of the lens barrel is provided with a third mounting cavity for accommodating the third lens and the fourth lens, and the top of the third mounting cavity is provided with a second annular limiting boss, which is used to axially limit the third lens.

[0015] A further improvement to the above technical solution is that a mounting part is connected to the lower outer side of the lens barrel, and the outer peripheral surface of the mounting part is provided with mounting threads; the inner sidewall of the mounting part is provided with a number of reinforcing ribs between the inner sidewall of the mounting part and the outer wall of the lens barrel, and the number of reinforcing ribs are evenly distributed along the circumference of the mounting part.

[0016] The beneficial effects of this utility model are as follows:

[0017] This invention achieves excellent dust and water resistance through a sealed connection between the front-end protection component and the lens barrel, as well as sealing adhesive layers at corresponding positions of each lens element and the lens barrel, ensuring normal use and image quality of the lens in complex environments. The selection of different lens materials and types, as well as the materials and molding processes for the lens barrel and pressing ring, allows for meeting diverse usage scenarios and cost requirements. The design of various mounting cavities, limiting bosses, and adhesive grooves within the lens barrel not only optimizes lens installation, fixation, and sealing but also further enhances the overall performance and stability of the lens. The design of the mounting section and reinforcing ribs strengthens the structural rigidity when the lens is connected to other devices. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the dustproof and waterproof lens structure of this utility model;

[0019] Figure 2 for Figure 1 A top view of the dustproof and waterproof lens structure;

[0020] Figure 3 for Figure 2 A cross-sectional view of the dustproof and waterproof lens structure along the AA direction;

[0021] Figure 4 for Figure 1 A three-dimensional cross-sectional view of the dustproof and waterproof lens structure after removing the sealant layer;

[0022] Figure 5 for Figure 1 Another structural diagram of the dustproof and waterproof lens structure.

[0023] The numbers on the map are:

[0024] 10. Lens body; 11. First lens element; 12. Second lens element; 13. Third lens element; 14. Fourth lens element; 15. Third sealing layer; 16. Fourth sealing layer; 17. Fifth sealing layer; 20. Front protection component; 21. Pressing ring; 22. Protective lens; 23. First sealing layer; 24. First adhesive groove; 25. First inclined surface; 26. Second adhesive groove; 30. Lens barrel; 31. Second sealing layer; 40. First mounting cavity; 41. Second inclined surface; 42. Third adhesive groove; 50. Second mounting cavity; 51. First annular limiting boss; 52. Third inclined surface; 53. Fourth adhesive groove; 60. Third mounting cavity; 61. Second annular limiting boss; 70. Mounting part; 71. Mounting thread; 72. Reinforcing rib. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be noted that the terms "vertical direction," "up," "down," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] like Figures 1 to 5 The image shows an embodiment of the present invention, relating to a dustproof and waterproof lens structure. The structure comprises a lens body 10, which includes a front-end protection component 20, a lens barrel 30, and a first lens 11, a second lens 12, a third lens 13, and a fourth lens 14 sequentially stacked within the lens barrel 30 along its axial direction. The front-end protection component 20 includes a pressure ring 21 sleeved and connected to the lens barrel 30, and a protective lens 22. The top end face of the pressure ring 21 is provided with a first... A first sealing layer 23 is provided, and the protective lens 22 is fixed to the top of the compression ring 21 through the first sealing layer 23; a second sealing layer 31 is provided between the outer wall of the lens barrel 30 and the bottom of the compression ring 21; a third sealing layer 15 is provided between the top edge of the first lens 11 and the top inner wall of the lens barrel 30; a fourth sealing layer 16 is provided between the bottom edge of the second lens 12 and the middle inner wall of the lens barrel 30; and a fifth sealing layer 17 is provided between the bottom edge of the fourth lens 14 and the bottom inner wall of the lens barrel 30.

[0029] Specifically, by incorporating a front-end protection component 20, a lens barrel 30, and a multi-layered lens structure, with a sealing layer at the connection between each lens and the lens barrel 30, dust and water can be effectively prevented from entering the lens, ensuring normal lens operation in complex environments and improving image quality. Simultaneously, this multi-layered lens combination allows for multiple refractions and focusing of light, correcting aberrations and improving image sharpness and quality.

[0030] In this embodiment, the sealant layer can be fixed into an annular ring by dispensing, coating, or potting processes; the sealant can also be existing mature materials such as silicone sealant, polyurethane sealant, epoxy resin sealant, or butyl rubber sealant.

[0031] like Figure 4 As shown, the top end face of the compression ring 21 is provided with a first adhesive groove 24, which is used to accommodate the first sealing adhesive layer 23; the bottom inner sidewall of the compression ring 21 is provided with a first inclined surface 25, and a second adhesive groove 26 is formed between the first inclined surface 25 and the outer sidewall of the lens barrel 30, which is used to accommodate the second sealing adhesive layer 31. Specifically, the first adhesive groove 24 can accurately position the first sealing adhesive layer 23, ensuring the uniformity and stability of the sealing adhesive layer, thereby better achieving a sealed connection between the lens 22 and the compression ring 21; the second adhesive groove 26 can accurately accommodate the second sealing adhesive layer 31, optimize the sealing structure, and further improve the dustproof and waterproof effect.

[0032] like Figure 1 As shown, the lens barrel 30 is either a metal lens barrel 30 or an injection-molded lens barrel 30; the pressing ring 21 is either a metal pressing ring 21 or an injection-molded pressing ring 21. Specifically, the lens barrel 30 and the pressing ring 21 can be manufactured using either metal material or injection molding. Metal material has high strength and durability, effectively protecting the internal lens and exhibiting excellent waterproof and dustproof performance; injection molding can enable the manufacture of complex structures, reduce production costs, improve production efficiency, and make the product more economical and manufacturable.

[0033] like Figure 1 As shown, the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, and the protective lens 22 are all either glass lenses or injection-molded lenses. Specifically, the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, and the protective lens 22 include, but are not limited to, glass lenses or injection-molded lenses. Glass lenses have higher refractive index, lower dispersion, and stronger resistance to heat deformation, which can improve the stability and adjustability of imaging, and have obvious advantages in high-end camera modules. Injection-molded lenses are lightweight, easy to mold, and low in cost. They can also directly form complex aspherical contours in the injection mold, and have an inherent processing cost advantage in macro, wide-angle, and other structures. The lens material can be flexibly selected according to different usage scenarios and cost requirements.

[0034] like Figure 1As shown, the third lens 13 and the fourth lens 14 are both single lenses, cemented lenses, or snap-fit ​​lenses. Specifically, single lenses have a simple structure and can meet some basic optical requirements; cemented lenses can bond lenses of different materials and optical properties together to correct aberrations such as chromatic aberration and improve image quality; snap-fit ​​lenses can simplify the assembly process while ensuring certain optical performance, and different lens types can meet diverse optical design requirements.

[0035] like Figure 4 As shown, the top of the lens barrel 30 is provided with a first mounting cavity 40 for accommodating the first lens 11. The inner sidewall of the top of the first mounting cavity 40 is provided with a second inclined surface 41. The second inclined surface 41 and the top edge of the first lens 11 form a third adhesive groove 42, which is used to accommodate a third sealing adhesive layer 15. Specifically, the first mounting cavity 40 at the top of the lens barrel 30 is used to accommodate the first lens 11. The second inclined surface 41 of its inner sidewall and the top edge of the first lens 11 form a third adhesive groove 42, which can accurately accommodate the third sealing adhesive layer 15, optimize the sealing connection between the first lens 11 and the top of the lens barrel 30, and improve the dustproof and waterproof effect.

[0036] like Figure 4 As shown, the lens barrel 30 has a second mounting cavity 50 in the middle for accommodating the second lens 12. The top of the second mounting cavity 50 has a first annular limiting boss 51, which is used to axially limit the second lens 12. Specifically, the second mounting cavity 50 in the middle of the lens barrel 30 is used to accommodate the second lens 12, and the first annular limiting boss 51 at its top axially limits the second lens 12, which can ensure the stability of the second lens 12 in the lens barrel 30, ensure the accuracy of the optical path when light passes through the second lens 12, thereby improving the image quality. At the same time, this structure also helps to simplify the lens installation and fixing process.

[0037] like Figure 4 As shown, the lower inner wall of the first annular limiting protrusion 51 is provided with a third inclined surface 52. The third inclined surface 52 and the second lens 12 form a fourth adhesive groove 53 for accommodating the fourth sealing adhesive layer 16. Specifically, the third inclined surface 52 and the second lens 12 form a fourth adhesive groove 53 for accommodating the fourth sealing adhesive layer 16, further optimizing the sealing connection between the second lens 12 and the middle part of the lens barrel 30, and improving the dustproof and waterproof performance.

[0038] like Figure 4As shown, the bottom of the lens barrel 30 is provided with a third mounting cavity 60 for accommodating the third lens 13 and the fourth lens 14. The top of the third mounting cavity is provided with a second annular limiting boss 61, which is used to axially limit the third lens 13. Specifically, the third mounting cavity 60 at the bottom of the lens barrel 30 is used to accommodate the third lens 13 and the fourth lens 14, and the second annular limiting boss 61 at its top axially limits the third lens 13, ensuring the stability of the third lens 13 in the lens barrel 30, ensuring the accuracy of the optical path when light passes through the third lens 13 and the fourth lens 14, improving the image quality, and also helping to simplify the lens installation and fixing process.

[0039] like Figure 1 and Figure 5 As shown, a mounting portion 70 is connected to the lower outer side of the lens barrel 30, and the outer peripheral surface of the mounting portion 70 is provided with mounting threads 71. A plurality of reinforcing ribs 72 are provided between the inner sidewall of the mounting portion 70 and the outer wall of the lens barrel 30, and these reinforcing ribs 72 are evenly distributed along the circumference of the mounting portion 70. Specifically, the mounting threads 71 ​​on the outer peripheral surface of the mounting portion 70 facilitate the installation and connection of the lens with other devices; the plurality of reinforcing ribs 72 provided between the inner sidewall of the mounting portion 70 and the outer wall of the lens barrel 30 are evenly distributed along the circumference, which can enhance the connection strength between the mounting portion 70 and the lens barrel 30, improve the stability of the overall lens structure, and ensure that the lens will not be damaged by external forces during use.

[0040] The working principle of this utility model is as follows:

[0041] Light enters through the protective lens 22 at the front of the lens and passes sequentially through the first lens 11, second lens 12, third lens 13, and fourth lens 14, which are stacked axially within the lens barrel 30. During this process, the light is refracted and focused by each lens, converging onto the imaging surface to form a clear image. Each lens is tightly connected to its corresponding position in the lens barrel 30 via a sealing layer. The pressure ring 21 is fixed to the protective lens 22 via the first sealing layer 23, and the pressure ring 21 is sealed to the lens barrel 30 via the second sealing layer 31, effectively preventing dust and water from entering the lens.

[0042] This invention achieves excellent dust and water resistance through the sealed connection between the front-end protection component 20 and the lens barrel 30, as well as the sealing adhesive layer at the corresponding positions of each lens element and the lens barrel 30, ensuring normal use and image quality of the lens in complex environments. The selection of different lens materials and types, as well as the materials and molding processes of the lens barrel 30 and the pressing ring 21, allows for the fulfillment of diverse usage scenarios and cost requirements. The design of various mounting cavities, limiting bosses, and adhesive grooves within the lens barrel 30 not only optimizes the installation, fixation, and sealing of the lens but also further enhances the overall performance and stability of the lens. The design of the mounting section 70 and the reinforcing rib 72 strengthens the structural strength when the lens is connected to other devices.

[0043] The above description merely illustrates the preferred technical solution of this utility model, and while the description is relatively specific and detailed, it should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and this utility model also intends to include these modifications and variations.

Claims

1. A dustproof and waterproof lens structure characterized by comprising: The lens includes a lens body, which comprises a front protection assembly, a lens barrel, and a first lens, a second lens, a third lens, and a fourth lens stacked sequentially inside the lens barrel along its axial direction. The front protection assembly includes a pressure ring sleeved and connected to the lens barrel, and a protective lens. The top end face of the pressure ring is provided with a first sealing adhesive layer, and the protective lens is fixed to the top of the pressure ring through the first sealing adhesive layer. A second sealing adhesive layer is provided between the outer wall of the lens barrel and the bottom of the pressure ring. A third sealing adhesive layer is provided between the top edge of the first lens and the top inner wall of the lens barrel. A fourth sealing adhesive layer is provided between the bottom edge of the second lens and the middle inner wall of the lens barrel. A fifth sealing adhesive layer is provided between the bottom edge of the fourth lens and the bottom inner wall of the lens barrel.

2. The dust and water proof lens structure according to claim 1, wherein, The top end face of the compression ring is provided with a first adhesive groove, which is used to accommodate a first sealant layer; the bottom inner side wall of the compression ring is provided with a first inclined surface, and a second adhesive groove is formed between the first inclined surface and the outer side wall of the lens barrel, which is used to accommodate a second sealant layer.

3. The dust and water proof lens structure according to claim 1, wherein, The lens barrel is either a metal lens barrel or an injection-molded lens barrel; the pressing ring is either a metal pressing ring or an injection-molded pressing ring.

4. The dustproof and waterproof lens structure according to claim 1, characterized in that, The first lens, the second lens, the third lens, the fourth lens, and the protective lens are all either glass lenses or injection-molded lenses.

5. The dustproof and waterproof lens structure according to claim 1, characterized in that, The third and fourth lenses are both single lenses, laminated lenses, or snap-fit ​​lenses.

6. The dustproof and waterproof lens structure according to claim 1, characterized in that, The top of the lens barrel is provided with a first mounting cavity for accommodating the first lens. The inner sidewall of the top of the first mounting cavity is provided with a second inclined surface. The second inclined surface and the top edge of the first lens form a third adhesive groove, which is used to accommodate a third sealing adhesive layer.

7. The dustproof and waterproof lens structure according to claim 1, characterized in that, The lens barrel has a second mounting cavity in the middle for accommodating the second lens, and a first annular limiting boss at the top of the second mounting cavity for axially limiting the second lens.

8. The dustproof and waterproof lens structure according to claim 7, characterized in that, The lower inner wall of the first annular limiting boss is provided with a third inclined surface, and the third inclined surface and the second lens form a fourth adhesive groove for accommodating the fourth sealing adhesive layer.

9. The dustproof and waterproof lens structure according to claim 1, characterized in that, The bottom of the lens barrel is provided with a third mounting cavity for accommodating the third lens and the fourth lens. The top of the third mounting cavity is provided with a second annular limiting boss, which is used to axially limit the third lens.

10. The dust and water proof lens structure according to claim 1, wherein, The lower outer side of the lens barrel is connected to a mounting part, and the outer peripheral surface of the mounting part is provided with mounting threads; the inner sidewall of the mounting part is provided with a number of reinforcing ribs between the inner sidewall of the mounting part and the outer wall of the lens barrel, and the number of reinforcing ribs are evenly distributed along the circumference of the mounting part.

Images