Novel asymmetric multipoint myopia out-of-focus lens

Abstract

The utility model relates to the field of myopic out-of-focus lenses, in particular to a novel asymmetric multipoint myopic out-of-focus lens, which adopts the technical scheme that the novel asymmetric multipoint myopic out-of-focus lens comprises a lens main body, the front end surface of the lens main body is a convex surface, the rear end surface of the lens main body is a concave surface, and a front end surface lens is fixedly mounted on the front end surface of the lens main body; one side, close to the lens main body, of the front end face lens is provided with a concave point, and an out-of-focus crystal is embedded in the concave point. The front end face lens completely wraps the out-of-focus crystal on the front end face of the lens main body, so that the convex out-of-focus crystal is prevented from being exposed; according to the asymmetric multi-point myopia out-of-focus lens, the semi-spherical protruding out-of-focus crystal is prevented from being abraded, the effect that the out-of-focus effect gradually becomes poor is avoided, the surface of the front end face lens wrapping the out-of-focus crystal is still flat, dust and dirt are not prone to being attached, and the definition effect of the asymmetric multi-point myopia out-of-focus lens is improved.

Description

Technical Field

[0001] The utility model relates to the field of myopia defocus lenses, in particular to a novel asymmetric multi-point myopia defocus lens. Background Art

[0002] Asymmetric multi-point myopia defocus lenses are specialized spectacle lenses used to correct myopia. By creating different curvatures in the front and back of the lens, they alter the angle of refraction of light as it passes through the lens, effectively slowing the progression of myopia and delaying eye axial elongation. This is of great significance for the prevention and treatment of myopia in adolescents. Compared to traditional symmetrical hyperbolic myopia lenses, asymmetric multi-point myopia defocus lenses feature a significant difference in the radius of curvature between the front and back of the lens. This design effectively reduces the thickness of the lens's central area, minimizing distortion and vignetting, and improving visual clarity and comfort.

[0003] The existing technology has the following deficiencies: the surface of the traditional asymmetric multi-point myopia defocus lens is surrounded by hemispherical protrusions of different refractive powers to achieve the myopia defocus effect. During long-term use, the hemispherical protrusions on the surface of the defocus lens are prone to wear, causing the defocus effect to gradually deteriorate, resulting in unsatisfactory myopia correction effect. In addition, compared with ordinary myopia lenses, the lens with hemispherical protrusions has a larger and rougher surface area, causing dust to easily adhere to the surface of the defocus lens and harbor dirt, which greatly affects the clarity of the asymmetric multi-point myopia defocus lens.

[0004] Therefore, it is necessary to invent a novel asymmetric multi-point myopia defocus lens. Utility Model Content

[0005] To this end, the present invention provides a new type of asymmetric multi-point myopia defocus lens, which completely wraps the defocus crystal on the front end of the lens body through the front end lens to avoid the protruding defocus crystal from being exposed, so as to solve the problem that the hemispherical protrusions on the surface of the defocus lens are prone to wear during long-term use, causing the defocus effect to gradually deteriorate, resulting in unsatisfactory myopia correction effect, and the lens with hemispherical protrusions has a larger and rougher surface area than ordinary myopia lenses, which makes it easy for dust to adhere to the surface of the defocus lens and hide dirt, greatly affecting the clarity of the asymmetric multi-point myopia defocus lens.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a new type of asymmetric multi-point myopia defocus lens, comprising a lens body, the front end face of the lens body is set as a convex surface, the rear end face of the lens body is set as a concave surface, the front end face lens is fixedly installed on the front end face of the lens body, a concave point is provided on the side of the front end face lens close to the lens body, a defocus crystal is embedded in the concave point, and the front end face lens can protect the defocus crystal.

[0007] Preferably, the lens body and the front end lens are made of resin material, and the lens body and the front end lens are connected by bonding.

[0008] Preferably, the defocused crystal is made of glass and has a hemispherical structure.

[0009] Preferably, a plurality of the concave points are arranged in a scattered manner on a side of the front face lens close to the lens body, and a defocused crystal is embedded in each of the concave points.

[0010] Preferably, a rear end surface UV curing layer is fixedly bonded to the rear end surface of the lens body, and a rear end surface hydrophobic film layer is bonded to the surface of the rear end surface UV curing layer.

[0011] Preferably, a front-end UV curing layer is fixedly bonded to a side of the front-end lens away from the lens body, and an anti-ultraviolet and anti-aging layer is bonded to the surface of the front-end UV curing layer.

[0012] Preferably, a hardened wear-resistant layer is fixedly bonded to the surface of the anti-ultraviolet and anti-aging layer, and a front-end hydrophobic film layer is fixedly bonded to the surface of the hardened wear-resistant layer.

[0013] The beneficial effects of the present invention are: the front end lens completely wraps the defocused crystal on the front end face of the lens main body, avoiding the convex defocused crystal from being exposed, so as to prevent the hemispherical convex defocused crystal from being worn and the defocusing effect from gradually deteriorating, and the surface of the front end lens wrapping the defocused crystal remains smooth and is not easy to adhere to dust and hide dirt, thereby improving the clarity of the asymmetric multi-point myopia defocused lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic structural diagram of a novel asymmetric multi-point myopia defocus lens provided by the utility model;

[0015] Figure 2 A schematic diagram of the arrangement of defocused crystals of a novel asymmetric multi-point myopia defocused lens provided by the present invention;

[0016] Figure 3 A schematic diagram of bonding the lens body and the front lens surface of a novel asymmetric multi-point myopia defocus lens provided by the utility model;

[0017] Figure 4 A cross-sectional view of a novel asymmetric multi-point myopia defocus lens provided by the present invention;

[0018] Figure 5 The utility model provides a novel asymmetric multi-point myopia defocus lens Figure 4 A detail picture of.

[0019] In the figure: lens body 11, front face lens 12, defocused crystal 13, rear face UV curing layer 14, rear face hydrophobic film layer 15, front face UV curing layer 16, anti-UV and anti-aging layer 17, hardened wear-resistant layer 18, front face hydrophobic film layer 19, and concave point 20. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention. Example 1

[0021] like Figures 1-4 As shown, a new type of asymmetric multi-point myopia defocus lens in the embodiment of the first aspect of the present utility model includes a lens body 11, the front end face of the lens body 11 is set to a convex surface, the rear end face of the lens body 11 is set to a concave surface, and the front end face lens 12 is fixedly installed on the front end face of the lens body 11. The front end face lens 12 is provided with a concave point 20 on the side close to the lens body 11, and a defocus crystal 13 is embedded in the concave point 20. The front end face lens 12 can protect the defocus crystal 13.

[0022] In the above embodiment, it should be noted that the front end lens 12 completely wraps the defocused crystal 13 on the front end face of the lens body 11, avoiding the protruding defocused crystal 13 from being exposed, so as to prevent the hemispherical protruding defocused crystal 13 from being worn and the defocusing effect from gradually deteriorating. In addition, the surface of the front end lens 12 wrapping the defocused crystal 13 is still smooth and not easy to adhere to dust and harbor dirt, thereby improving the clarity of the asymmetric multi-point myopia defocused lens. Example 2

[0023] like Figures 1-4 As shown, a new type of asymmetric multi-point myopia defocus lens includes all the contents of Example 1. In addition, the lens body 11 and the front face lens 12 are made of resin material, and the lens body 11 and the front face lens 12 are connected by bonding. The defocus crystal 13 is made of glass material, and the defocus crystal 13 has a hemispherical structure. Several of the concave points 20 are arranged in a scattered manner on the side of the front face lens 12 close to the lens body 11, and a defocus crystal 13 is embedded in each of the concave points 20.

[0024] In the above embodiment, it should be noted that the refractive index of the defocused crystal 13 made of glass is higher than that of the lens body 11 and the front lens 12 made of resin. After the light passes through the front lens 12, a part of the light is refracted by the defocused crystal 13 and projected in front of the retina instead of being directly focused, so as to achieve the effect of changing the visual stimulation behind the retina, thereby affecting the growth and development of the eyes and reducing the rate of progression of myopia. Example 3

[0025] like Figure 1 、 Figure 4 and Figure 5 As shown, a new type of asymmetric multi-point myopia defocus lens includes all the contents of Example 1. In addition, the rear end face of the lens body 11 is fixedly bonded with a rear end face UV curing layer 14, and the surface of the rear end face UV curing layer 14 is bonded with a rear end face hydrophobic film layer 15. The side of the front end lens 12 away from the lens body 11 is fixedly bonded with a front end face UV curing layer 16, and the surface of the front end face UV curing layer 16 is bonded with an anti-UV and anti-aging layer 17. The surface of the anti-UV and anti-aging layer 17 is fixedly bonded with a hardened wear-resistant layer 18, and the surface of the hardened wear-resistant layer 18 is fixedly bonded with a front end face hydrophobic film layer 19.

[0026] In the above embodiment, it should be noted that the rear face UV curing layer 14 and the front face UV curing layer 16 are special coatings applied to the lens surface and cured using ultraviolet (UV) light. The main functions of the rear face UV curing layer 14 and the front face UV curing layer are to provide surface protection, enhance wear resistance, improve appearance, and enhance surface smoothness. The hydrophobic film layer 15 is a special coating applied to the surface to make the surface hydrophobic, that is, the contact angle formed by water droplets on the surface is large, thereby causing the water droplets to form spherical shapes on the surface rather than spreading out. This property enables the water droplets to easily roll off the surface, carrying away dirt and impurities, thereby keeping the surface clean. The anti-UV and anti-aging layer 17 is a special layer applied to the surface of the material to protect the material from damage by ultraviolet light and extend the service life of the material. The hardened wear-resistant layer 18 is a special layer applied to the surface of the lens. This coating contains a high molecular weight polymer or an inorganic compound and can form a hard protective film to increase the hardness of the lens and reduce scratches and wear.

[0027] The usage process of the present invention is as follows: when a technician in this field wears the present invention, after the light passes through the front lens 12, a part of the light is refracted by the defocused crystal 13 and projected in front of the retina, causing the visual stimulation behind the retina to change, thereby reducing the progression of myopia. In daily use, the front lens 12 completely wraps the defocused crystal 13 on the front face of the lens body 11, avoiding the protruding defocused crystal 13 from being exposed to the outside, preventing the hemispherical protruding defocused crystal 13 from being worn, and making it difficult for dust to adhere to the surface of the lens and hide dirt.

[0028] The above description is merely a preferred embodiment of the present invention. Anyone skilled in the art may utilize the above-described technical solutions to modify the present invention or create equivalent technical solutions. Therefore, any simple modification or equivalent replacement based on the technical solutions of the present invention falls within the scope of protection claimed by the present invention.

Claims

1. A novel asymmetric multi-point myopia defocus lens, comprising a lens body (11), characterized in that: The front end face of the lens body (11) is set as a convex surface, and the rear end face of the lens body (11) is set as a concave surface. A front end face lens (12) is fixedly mounted on the front end face of the lens body (11). A concave point (20) is arranged on a side of the front end face lens (12) close to the lens body (11). A defocused crystal (13) is embedded and mounted in the concave point (20). The front end face lens (12) can protect the defocused crystal (13).

2. The novel asymmetric multi-point myopia defocus lens according to claim 1, characterized in that: The lens body (11) and the front face lens (12) are made of resin material, and the lens body (11) and the front face lens (12) are connected by bonding.

3. The novel asymmetric multi-point myopia defocus lens according to claim 1, characterized in that: The defocusing crystal (13) is made of glass material, and the defocusing crystal (13) is in a hemispherical structure.

4. The novel asymmetric multi-point myopia defocus lens according to claim 1, characterized in that: A plurality of the concave points (20) are arranged in a scattered manner on a side of the front face lens (12) close to the lens body (11), and a defocused crystal (13) is embedded in each of the concave points (20).

5. The novel asymmetric multi-point myopia defocus lens according to claim 1, characterized in that: A rear end surface UV curing layer (14) is fixedly bonded to the rear end surface of the lens body (11), and a rear end surface hydrophobic film layer (15) is bonded to the surface of the rear end surface UV curing layer (14).

6. The novel asymmetric multi-point myopia defocus lens according to claim 1, characterized in that: A front-end UV curing layer (16) is fixedly bonded to the side of the front-end lens (12) away from the lens body (11), and an anti-ultraviolet and anti-aging layer (17) is bonded to the surface of the front-end UV curing layer (16).

7. The novel asymmetric multi-point myopia defocus lens according to claim 6, characterized in that: A hardened wear-resistant layer (18) is fixedly bonded to the surface of the anti-ultraviolet and anti-aging layer (17), and a front-end hydrophobic film layer (19) is fixedly bonded to the surface of the hardened wear-resistant layer (18).

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