High-wear-resistance PC multipoint myopia out-of-focus lens

Abstract

The utility model discloses a highly wear-resistant PC multipoint myopia out-of-focus lens. The highly wear-resistant PC multipoint myopia out-of-focus lens is composed of a PC substrate, a composite highly wear-resistant reinforced layer, an antireflection film layer and an oil-proof layer, a plurality of micro lenses for correcting myopia are arranged on the outer surface of the PC substrate; an inner composite high-wear-resistance strengthening layer and an outer composite high-wear-resistance strengthening layer are arranged on the inner surface and the outer surface of the PC substrate respectively, each composite high-wear-resistance strengthening layer is composed of a bottom coating and a surface coating, each bottom coating is a 7130 strengthening liquid coating, and each surface coating is a 7110 strengthening liquid coating. An inner anti-reflection film layer and an outer anti-reflection film layer are respectively arranged on the inner surface of the inner composite type high-wear-resistance reinforced layer and the outer surface of the outer composite type high-wear-resistance reinforced layer; and an inner oil-proof layer and an outer oil-proof layer are respectively arranged on the inner surface of the inner antireflection film layer and the outer surface of the outer antireflection film layer. According to the structure, the wear resistance of the surface of the lens can be improved, the multi-point myopia out-of-focus structure is prevented from being bumped, scratched and the like during use, and the service life of the lens is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of lenses, in particular to a highly wear-resistant PC multi-point myopia defocus lens. Background Art

[0002] At present, with the rapid development of modern science and technology, the popularization of electronic products and the increase in study and work pressure, the problem of myopia is becoming increasingly serious, especially among adolescents, whose myopia rate remains high and is showing a trend of younger age. Traditional lenses have limited effect in preventing and controlling myopia, while functional lenses that use peripheral defocus and multi-point defocus technology have gradually become the new favorites in the market due to their unique myopia prevention and control effects. At the same time, consumers' demand for high wear resistance of lenses is also increasing. The current practice is to first cover the lens with a hardened protective layer and then apply a vacuum coating layer. Because multi-point myopia defocus lenses have poor wear resistance, they are easily damaged by bumps, scratches, and other damages during use. If these scratches are more obvious and are in the area where the line of sight passes (within 30 mm of the center area of ​​the pupil), they will affect vision, affect the wearer's experience and aesthetics, and at the same time affect the service life of the lens, resulting in a waste of resources.

[0003] In view of this, the present inventor, relying on the long-term experience in lens production and manufacturing, has designed a new type of high wear-resistant structure specifically for PC multi-point myopia defocus lenses, so as to improve the overall wear resistance of the lenses and extend the service life of the lenses, thus resulting in this case. Utility Model Content

[0004] The purpose of the utility model is to provide a highly wear-resistant PC multi-point myopia defocus lens to improve the wear resistance of the lens surface and extend the service life of the lens.

[0005] In order to achieve the above purpose, the solution of the utility model is:

[0006] A highly wear-resistant PC multi-point myopia defocus lens comprises a PC substrate, a composite high-wear-resistant strengthening layer, an anti-reflection film layer and an oil-proof layer; the outer surface of the PC substrate is provided with a plurality of micro-lenses for correcting myopia; an inner composite high-wear-resistant strengthening layer and an outer composite high-wear-resistant strengthening layer are respectively provided on the inner and outer surfaces of the PC substrate, the composite high-wear-resistant strengthening layer comprising a primer and a topcoat, the primer being a 7130 strengthening liquid coating and the topcoat being a 7110 strengthening liquid coating; an inner anti-reflection film layer and an outer anti-reflection film layer are respectively provided on the inner surface of the inner composite high-wear-resistant strengthening layer and the outer surface of the outer composite high-wear-resistant strengthening layer; an inner oil-proof layer and an outer oil-proof layer are respectively provided on the inner surface of the inner anti-reflection film layer and the outer surface of the outer anti-reflection film layer.

[0007] The thickness of the PC substrate is 1.3 mm to 2.0 mm.

[0008] In the composite high wear-resistant strengthening layer, the base coating layer adopts 7130 strengthening liquid produced by SDC Corporation of the United States; the top coating layer adopts 7110 strengthening liquid produced by SDC Corporation of the United States.

[0009] The thickness of the primer layer is 1-2 μm, and the thickness of the top coating layer is 2-4 μm.

[0010] The thickness of the anti-reflection film layer is 90-110 nm.

[0011] The thickness of the oil-proof layer is 2-6 nm.

[0012] After adopting the above scheme, the utility model forms a multi-point myopia defocus lens because the outer surface of the PC substrate has a number of micro lenses for correcting myopia. In addition, a composite high wear-resistant strengthening layer is set on the inner and outer surfaces of the PC substrate. The composite strengthening layer structure composed of a base coating (7130 strengthening liquid) and a top coating (7110 strengthening liquid) replaces the traditional hardened protective layer, which can improve the wear and scratch resistance of the lens, while not affecting the micro lenses (defocus structure) on the outer surface of the PC substrate; an anti-reflection film layer is added on the composite high wear-resistant strengthening layer to reduce the reflected light from the back of the lens to the eyes, making the vision clearer; an oil-proof layer is added on the anti-reflection film layer to play an oil-proof role. In this way, the utility model can improve the overall wear resistance of the lens, avoid damage such as bumps, scratches, and scrapes on the multi-point myopia defocus structure during use, avoid scratches that affect vision, improve the wearer's experience, ensure the beauty of the lens, extend the service life of the lens, and avoid waste of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for describing the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be considered as limiting the scope. For those skilled in the art, other relevant drawings can be obtained based on these drawings without inventive effort.

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 yes Figure 1 A magnified view of the local A;

[0016] Figure 3 This is a partial enlarged view of the outer surface of the PC substrate;

[0017] Figure 4 It is a structural diagram of a composite high wear-resistant strengthening layer;

[0018] Figure 5It is the transmission spectrum diagram of the present utility model;

[0019] Figure 6 It is a reflectivity curve diagram of the present utility model.

[0020] Label Description

[0021] PC substrate----1, microlens----11;

[0022] Composite high wear-resistant strengthening layer----2, base coating----21, top coating----22;

[0023] Anti-reflection coating layer----3;

[0024] Oil-proof layer----4. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] It should be noted that the terms front, back, inside, outside, top, bottom, left, right, first, second, third, etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the technical features indicated, unless otherwise clearly and specifically defined.

[0027] like Figures 1 to 6 As shown, the utility model discloses a highly wear-resistant PC multi-point myopia defocus lens, which is composed of a PC substrate 1, a composite highly wear-resistant strengthening layer 2, an anti-reflection film layer 3 and an oil-proof layer 4.

[0028] The PC substrate 1 is injection-molded from PC material. During the injection molding process, the outer surface of the PC substrate 1 is integrally formed with a plurality of microlenses 11 for correcting myopia. The thickness of the PC substrate 1 ranges from 1.3 mm to 2.0 mm. Because the microlenses 11 are formed on the outer surface of the PC substrate 1, the present invention forms a multi-point myopia defocus lens, which has a unique myopia prevention and control effect.

[0029] An inner composite high wear-resistant strengthening layer 2 and an outer composite high wear-resistant strengthening layer 2 are respectively provided on the inner surface and the outer surface of the PC substrate 1. The composite high wear-resistant strengthening layer 2 is composed of a primer 21 and a top coating 22, the primer 21 is a 7130 strengthening liquid coating, and the top coating 22 is a 7110 strengthening liquid coating. The preferred thickness of the primer 21 is 1-2 μm, and the preferred thickness of the top coating 22 is 2-4 μm. Specifically, in the composite high wear-resistant strengthening layer 2, the primer 21 adopts the 7110 strengthening liquid produced by the American SDC company; the top coating 22 adopts the 7110 strengthening liquid produced by the American SDC company. The utility model utilizes a composite high wear-resistant strengthening layer 2 to replace the traditional hardened protective layer, which can enhance the hardness of the lens, improve the wear resistance and scratch resistance of the lens, prevent the lens from being scratched, and ensure that the microlens 11 (defocused structure) on the outer surface of the PC substrate 1 will not be affected.

[0030] An inner anti-reflection film layer 3 and an outer anti-reflection film layer 3 are respectively applied to the inner surface of the inner composite high-wear-resistant strengthening layer 2 and the outer surface of the outer composite high-wear-resistant strengthening layer 2. The thickness of the anti-reflection film layer 3 is preferably 90-110 nm. Specifically, the anti-reflection film layer 3 can be composed of alternating layers of titanium pentoxide and silicon dioxide. The anti-reflection film layer 3 reduces the amount of light reflected from the back of the lens that reaches the eye, improving vision and enhancing the overall light transmittance of the lens.

[0031] An inner and outer oil-repellent layer 4 are disposed on the inner and outer surfaces of the inner and outer anti-reflection coatings 3, respectively. The preferred thickness of the oil-repellent layer 4 is 2-6 nm. Specifically, the oil-repellent layer 4 can be composed of organic fluorine and / or organic silicon. The oil-repellent layer 4 of the present invention can provide oil- and dirt-resistant lenses.

[0032] The utility model can improve the overall wear resistance of the lens, avoid damage such as bumps, scratches, and the like on the multi-point myopia defocus structure during use, avoid scratches that affect vision, improve the wearer's experience of use, ensure the beauty of the lens, extend the service life of the lens, and avoid waste of resources.

[0033] The specific processing technology of the utility model during production is:

[0034] The first step is the production of PC substrate 1:

[0035] The PC substrate 1 is made of PC material. Plastic pellets are dehumidified and injection molded to form the PC substrate 1 for the lens. The thickness of the substrate 1 can be controlled between 1.3mm and 2.0mm, and the thickness can be adjusted based on the specific optical lens's diopter.

[0036] The second step is the production of composite high wear-resistant strengthening layer 2:

[0037] A layer of 7130 strengthening liquid and a layer of 7110 strengthening liquid are applied to the inner and outer surfaces of the PC substrate 1, forming a primer layer 21 and a top layer 22. Both the 7130 strengthening liquid and the 7110 strengthening liquid are manufactured by SDC Corporation of the United States. The thickness of the primer layer 21 is controlled to be 1-2 μm, and the thickness of the top layer 22 is controlled to be 2-4 μm. The primer layer 21 and the top layer 22 together form a composite, highly wear-resistant strengthening layer 2. This composite, highly wear-resistant strengthening layer 2 enhances the hardness of the lens, improving its wear and scratch resistance, and protecting the microlenses 11 on the outer surface of the PC substrate 1 from scratches.

[0038] The third step is the preparation of the anti-reflection film layer 3:

[0039] An anti-reflection coating 3 is formed on the inner and outer surfaces of the two composite high-wear-resistant strengthening layers 2 through vacuum evaporation. The thickness of this anti-reflection coating 3 is controlled to be between 90nm and 110nm. This anti-reflection coating 3 reduces the amount of light reflected from the back of the lens that reaches the eye, providing clearer vision.

[0040] Step 4: Preparation of oil-proof layer 4:

[0041] An oil-repellent layer 4 is formed on the inner and outer surfaces of the two anti-reflection film layers 3 by vacuum evaporation. The thickness of the oil-repellent layer 4 is controlled to be 2-6 nm. The oil-repellent layer 4 can make the lens oil-proof and anti-fouling.

[0042] At this point, the finished product of the highly wear-resistant PC multi-point myopia defocus lens of the utility model is obtained.

[0043] The finished product of this utility model has been tested, as shown Figure 5 As shown, the transmittance of the lens reaches 97%. Figure 6 As shown, the reflectivity of the lens reaches 1%. Hardness testing shows the lens hardness is above 2H. A 200g weight was applied to the lens and rubbed back and forth 10 times with a corresponding hardness pencil. A wear resistance test showed the lens could withstand 30 rubbings with 0000# steel wool and a 500g weight. The microlenses 11 on the outer surface of the PC substrate 1 were carefully observed to be free of scratches.

[0044] The above description is only an example of the implementation of the present invention and does not limit the scope of protection of the present invention. It should be noted that after reading this specification, equivalent changes made by those skilled in the art based on the design ideas of this case will fall within the scope of protection of this case.

Claims

1. A highly wear-resistant PC multi-point myopia defocus lens, characterized by: It consists of a PC substrate, a composite high-wear-resistant strengthening layer, an anti-reflection film layer and an oil-proof layer; the outer surface of the PC substrate has a number of micro lenses for correcting myopia; an inner composite high-wear-resistant strengthening layer and an outer composite high-wear-resistant strengthening layer are respectively arranged on the inner surface and outer surface of the PC substrate, and the composite high-wear-resistant strengthening layer consists of a primer and a topcoat, the primer is a 7130 strengthening liquid coating, and the topcoat is a 7110 strengthening liquid coating; an inner anti-reflection film layer and an outer anti-reflection film layer are respectively arranged on the inner surface of the inner composite high-wear-resistant strengthening layer and the outer surface of the outer composite high-wear-resistant strengthening layer; an inner oil-proof layer and an outer oil-proof layer are respectively arranged on the inner surface of the inner anti-reflection film layer and the outer surface of the outer anti-reflection film layer.

2. The highly wear-resistant PC multi-point myopia defocus lens according to claim 1, characterized in that: The thickness of the PC substrate is 1.3 mm to 2.0 mm.

3. The highly wear-resistant PC multi-point myopia defocus lens according to claim 1, characterized in that: In the composite high wear-resistant strengthening layer, the base coating layer adopts 7130 strengthening liquid produced by SDC Corporation of the United States; the top coating layer adopts 7110 strengthening liquid produced by SDC Corporation of the United States.

4. The highly wear-resistant PC multi-point myopia defocus lens according to claim 1, characterized in that: The thickness of the primer layer is 1-2 μm, and the thickness of the top coating layer is 2-4 μm.

5. The highly wear-resistant PC multi-point myopia defocus lens according to claim 1, characterized in that: The thickness of the anti-reflection film layer is 90-110 nm.

6. The highly wear-resistant PC multi-point myopia defocus lens according to claim 1, characterized in that: The thickness of the oil-proof layer is 2-6 nm.

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