Lens structure
By setting a reflective layer, a strong light interference layer and an anti-reflective layer on the inner side of the lens, the problems of complex lens production and high defect rate are solved, simple preparation and high-quality lens production are achieved, and wear comfort and transportation stability are improved.
Patent Information
- Application Number
- CN202421716246.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-19
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-07-19
AI Technical Summary
Traditional lens production process is complex, with high defect rate, and color differences and patches are easily generated during transportation and storage, affecting product quality.
In the lens structure, the reflective layer, the strong light interference layer and the anti-reflective layer are arranged on the inner side of the substrate in turn, and the reflectivity gradually decreases, and the lens color is determined by the color of the substrate to avoid contact with the electrostatic film.
Simplify production processes, reduce defective rates, improve wear comfort, and avoid color differences and patches during transportation and storage.
Smart Images
Figure CN223259907U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lenses, in particular to a lens structure. Background Art
[0002] Lenses, especially ski lenses, helmet lenses, and goggles, are often used outdoors. Traditional lens structures typically include a substrate, a reflective layer applied to the side of the substrate away from the eye (hereinafter referred to as the outer side of the substrate), and an anti-reflective layer applied to the side closer to the eye (hereinafter referred to as the inner side of the substrate). The reflective layer applied to the outer side of the substrate effectively reflects glare and glare, and also provides different colors by reflecting strong light of different wavelengths. The anti-reflective layer improves wearing comfort. Current lens structures require separate coatings on the outer and inner sides of the substrate during production. This means that after applying the reflective layer on the outer side, the substrate must be flipped or otherwise processed before applying the anti-reflective layer on the inner side. This requires not only the coating application process but also the flipping process, which complicates the lens production process and increases production costs. Furthermore, the flipping process between the reflective and anti-reflective layer applications creates a high risk of damage to the applied coating, leading to an increased defective rate.
[0003] In addition, when the lens 1 is transported or stored, an electrostatic film 2 is usually attached to the outside of the lens 1 for protection. When the electrostatic film 2 is applied to the surface of the lens 1, it will inevitably trap air and form bubbles. Due to inconsistent oxidation, the lens 1 will have color differences at the location of the bubbles formed by the electrostatic film 2 and the location where the electrostatic film 2 is completely attached. Moreover, due to significant changes in the transportation environment and storage environment or excessive storage time, the residual chemical components in the electrostatic film 2 will penetrate into the reflective layer on the surface of the lens 1, causing the color of the lens 1 to differ between the location where the electrostatic film 2 is completely attached and the location where the electrostatic film 2 is not completely attached. These will eventually lead to the formation of spots on the reflective layer of the lens 1, resulting in an increase in the defective rate. Utility Model Content
[0004] In view of the problems existing in the prior art, the purpose of the present invention is to provide a lens structure, which reduces the defective rate of the lens by changing the structure of the lens.
[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0006] A lens structure comprises a substrate, a reflective layer and an anti-reflective layer, the lens structure further comprising a strong light interference layer, wherein the reflective layer, the strong light interference layer and the anti-reflective layer are sequentially arranged on the inner side of the substrate, and the reflective layer is bonded to the inner side of the substrate, and the strong light interference layer is located between the reflective layer and the anti-reflective layer; the inner side of the substrate is the side of the substrate closest to the human eye; the reflectivities of the reflective layer, the strong light interference layer and the anti-reflective layer gradually decrease.
[0007] The reflectivity of the reflective layer is 10%-30%, the reflectivity of the strong light interference layer is 1%-4%, and the reflectivity of the anti-reflection layer is 0.1%-0.4%.
[0008] The refractive index of the reflective layer is 2.2@550nm, the refractive index of the strong light interference layer is 5@550nm, and the refractive index of the anti-reflective layer is 2.2@550nm.
[0009] The thickness of the reflective layer is 100-500 nm, the thickness of the strong light interference layer is 50-200 nm, and the thickness of the anti-reflection layer is 50-200 nm.
[0010] The strong light interference layer is made of one or more of chromium, titanium, nickel and aluminum.
[0011] The reflective layer is made of one or more of titanium dioxide, zirconium oxide, niobium oxide, and aluminum oxide.
[0012] The anti-reflection layer is made of one or more of titanium dioxide, zirconium oxide, niobium oxide and aluminum oxide.
[0013] The base material is formed by mixing masterbatch and resin by injection molding.
[0014] After adopting the above scheme, the present invention arranges the reflective layer on the inner side of the substrate and bonds it to the inner side of the substrate. A strong light interference layer is provided between the reflective layer and the anti-reflective layer. This strong light interference layer absorbs visible light in a specific wavelength band. The reflectivity of the reflective layer, strong light interference layer, and anti-reflective layer gradually decreases, effectively ensuring and, to a certain extent, improving the wearing comfort of the lens. Because the reflective layer, strong light interference layer, and anti-reflective layer are all arranged on the same side of the substrate, the lens does not need to be flipped during production, which simplifies the lens production process, improves lens production efficiency, avoids damage to the lens film layer caused by the flipping step, and reduces the defective rate of lens production. In addition, because the reflective layer, strong light interference layer, and anti-reflective layer are all arranged on the inner side of the substrate, during transportation or storage, the electrostatic film is directly attached to the outer side of the substrate and does not come into contact with the film layer formed on the substrate. This also effectively prevents the formation of plaque and reduces the defective rate during transportation or storage.
[0015] Furthermore, in the lens structure of the present invention, the outer surface of the substrate is not coated, so the color displayed by the lens is determined by the color of the substrate. However, the substrate of the present invention is formed by injection molding a mixture of a masterbatch and a resin. By adjusting the type and amount of the masterbatch, the substrate can display a variety of different colors, eliminating the need for the color of the lens to be limited to the color of the reflective layer. This allows for a wider variety of lens colors for consumers to choose from. Furthermore, because the substrate is injection molded from a mixture of a masterbatch and a resin, its color is relatively stable and does not react with the electrostatic film attached to it, thereby preventing any impact on the color of the lens. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 A schematic diagram of an embodiment of the present utility model;
[0017] Figure 2 This is the test result of one of the existing lens structures;
[0018] Figure 3 This is the test result of the second existing lens structure;
[0019] Figure 4 This is the test result of one of the lens structures of the utility model;
[0020] Figure 5 Test results of the second lens structure of the present invention.
[0021] Marking Description:
[0022] Substrate 10; reflective layer 20; strong light interference layer 30; anti-reflection layer 40. DETAILED DESCRIPTION
[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of 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. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.
[0024] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.
[0025] like Figure 1As shown, the present invention discloses a lens structure comprising a substrate 10, a reflective layer 20, a strong light interference layer 30, and an anti-reflection layer 40. The reflective layer 20, the strong light interference layer 30, and the anti-reflection layer 40 are sequentially disposed on the inner side of the substrate 10, and the reflective layer 20 is bonded to the inner side of the substrate 10. The substrate 10 has an arc-shaped curved surface. The inner side of the substrate 10 refers to the side of the substrate 10 closest to the human eye and is also the concave side of the substrate 10. The reflectivities of the reflective layer 20, the strong light interference layer 30, and the anti-reflection layer 40 gradually decrease.
[0026] In this utility model, the reflective layer 20 is positioned on the inner side of the substrate 10 and bonded thereto. A strong light interference layer 30 is disposed between the reflective layer 20 and the anti-reflective layer 40. This strong light interference layer 30 absorbs some of the strong light that the reflective layer 20 cannot filter. It also absorbs strong light entering from the eye side, preventing reflections from the inner side of the reflective layer 20 (the side facing the eye), thereby improving wearing comfort. Furthermore, because the reflectivities of the reflective layer 20, the strong light interference layer 30, and the anti-reflective layer 40 gradually decrease, they sequentially reflect strong light of different wavelengths. After multiple layers of filtering and reflection, the light entering the eye becomes softer, enhancing wearing comfort.
[0027] Because the reflective layer 20, the strong light interference layer 30, and the anti-reflective layer 40 are all disposed on the same side of the substrate 10, the lens does not need to be flipped during manufacture. This simplifies the lens manufacturing process, improves lens manufacturing efficiency, avoids damage to the lens film layers caused by the flipping step, and reduces the defective rate of lens production. Furthermore, because the reflective layer 20, the strong light interference layer 30, and the anti-reflective layer 40 are all disposed on the inner side of the substrate 10, the electrostatic film is directly attached to the outer side of the substrate 10 during transportation or storage, and does not come into contact with the film layers formed on the substrate 10. This effectively prevents the formation of plaque and reduces the defective rate during transportation or storage.
[0028] To further enhance the wearing comfort of the lens, this embodiment specifies the reflectivities of the reflective layer 20, the strong light interference layer 30, and the anti-reflective layer 40. Specifically, the reflectivity of the reflective layer 20 is 10%-30%, the reflectivity of the strong light interference layer 30 is 1%-4%, and the reflectivity of the anti-reflective layer 40 is 0.1%-0.4%. Furthermore, in this embodiment, the reflectivity of the reflective layer 20 is 10%-30%, the reflectivity of the strong light interference layer 30 is 1%-4%, and the reflectivity of the anti-reflective layer 40 is 0.1%-0.4%. The refractive index of the reflective layer 20 is 2.2@550nm, the refractive index of the strong light interference layer 30 is 5@550nm, and the refractive index of the anti-reflective layer 40 is 2.2@550nm. The thickness of the reflective layer 20 is 100-500nm, the thickness of the strong light interference layer 30 is 50-200nm, and the thickness of the anti-reflective layer 40 is 50-200nm. The strong light interference layer 30 is made of one or more of chromium, titanium, nickel, and aluminum. The reflective layer 20 is made of one or more of titanium dioxide, zirconium oxide, niobium oxide, and aluminum oxide. The antireflection layer 40 is made of one or more of titanium dioxide, zirconium oxide, niobium oxide, and aluminum oxide.
[0029] In the lens structure of the present invention, no film layer is provided on the outer surface of the substrate 10, so the color displayed by the lens is determined by the color of the substrate 10. To enrich the color of the lens, the substrate 10 of the present invention is formed by injection molding a mixture of a masterbatch and a resin. During the lens production process, by adjusting the type and amount of the masterbatch, the substrate 10 can be made to display a variety of different colors, so that the color of the lens is no longer limited to the color of the reflective layer 20, thereby producing a wider variety of color lenses for consumers to choose from. Moreover, because the substrate 10 is formed by injection molding a mixture of a masterbatch and a resin, the color of the substrate 10 is relatively stable and will not react with the electrostatic film attached to it, thereby not affecting the color of the lens, which helps to ensure the quality of the lens.
[0030] In order to illustrate that the wearing comfort of the lens of the present invention is improved, the lens structure of the present invention is tested and compared with the existing lens structure. The test standard is: (GB 39552.1:2020, reflectivity). Figure 2 and Figure 3 Shown are the test results of two existing lenses, from Figure 2 and Figure 3 It can be seen that the reflectivity of existing lenses is close to 10%, which does not meet the test standards. Figure 4 and Figure 5 The test structure of two lenses of the present invention is shown as follows. Figure 4 and Figure 5 It can be seen that the reflectivity of the lenses of the present invention is less than 2.5%, which meets the test standard, indicating that the comfort of the lenses of the present invention has been improved.
[0031] The method for preparing the above lens structure includes the following steps:
[0032] S1. After the resin and the masterbatch are uniformly mixed according to a set mass ratio, the mixture is injection molded in an injection mold to obtain a colored substrate 10 with a circular curved surface. The resin and the masterbatch can be directly injected into the injection mold for molding, or the resin and the masterbatch can be mixed to form plastic rice, which is then used for injection molding.
[0033] S2. The substrate 10 obtained in step S1 is cleaned, which may be plasma cleaning or chemical reagent cleaning, to clean the surface of the substrate 10. After drying, vacuum coating is performed to form a reflective layer 20 on the inner side surface of the substrate 10.
[0034] S3 , performing vacuum coating on the substrate 10 obtained in step S2 to form a strong light interference layer 30 on the reflective layer 20 .
[0035] S4 , performing vacuum coating on the substrate 10 obtained in step S3 to form an anti-reflection layer 40 on the strong light interference layer 30 .
[0036] S5. Drying to obtain the lens.
[0037] The key to this invention lies in positioning the reflective layer 20 on the inner side of the substrate 10 and bonding it thereto. A strong light interference layer 30 is also positioned between the reflective layer 20 and the anti-reflective layer 40. This strong light interference layer 30 absorbs visible light within a specific wavelength band, and the reflectivities of the reflective layer 20, strong light interference layer 30, and anti-reflective layer 40 gradually decrease, effectively ensuring and, to a certain extent, improving the wearing comfort of the lens. The basic lens structure of the invention, because the reflective layer 20, strong light interference layer 30, and anti-reflective layer 40 are all positioned on the same side of the substrate 10, eliminates the need to flip the lens during manufacturing. This simplifies the lens manufacturing process, improves lens manufacturing efficiency, avoids damage to the lens film layer caused by the flipping step, and reduces the defective rate of lens production. In addition, since the reflective layer 20, the strong light interference layer 30 and the anti-reflection layer 40 are all arranged on the inner side of the substrate 10, during transportation or storage, the electrostatic film is directly attached to the outer side of the substrate 10 and will not contact the film layer formed on the substrate 10, which effectively avoids the generation of plaques and reduces the defective rate generated during transportation or storage.
[0038] The above description is merely an embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.
Claims
1. A lens structure comprising a substrate, a reflective layer, and an anti-reflective layer, characterized in that: The lens structure also includes a strong light interference layer. The reflective layer, the strong light interference layer and the anti-reflective layer are sequentially arranged on the inner side of the substrate, and the reflective layer is bonded to the inner side of the substrate. The inner side of the substrate is the side of the substrate close to the human eye; the reflectivities of the reflective layer, the strong light interference layer and the anti-reflective layer gradually decrease.
2. The lens structure according to claim 1, characterized in that: The reflectivity of the reflective layer is 10%-30%, the reflectivity of the strong light interference layer is 1%-4%, and the reflectivity of the anti-reflection layer is 0.1%-0.4%.
3. The lens structure according to claim 1, wherein: The refractive index of the reflective layer is 2.2@550nm, the refractive index of the strong light interference layer is 5@550nm, and the refractive index of the anti-reflective layer is 2.2@550nm.
4. The lens structure according to claim 1, wherein: The thickness of the reflective layer is 100-500 nm, the thickness of the strong light interference layer is 50-200 nm, and the thickness of the anti-reflection layer is 50-200 nm.
5. The lens structure according to claim 1, characterized in that: The strong light interference layer is made of one of chromium, titanium, nickel and aluminum.
6. The lens structure according to claim 1, characterized in that: The reflective layer is made of one of titanium dioxide, zirconium oxide, niobium oxide and aluminum oxide.
7. The lens structure according to claim 1, characterized in that: The anti-reflection layer is made of one of titanium dioxide, zirconium oxide, niobium oxide and aluminum oxide.