Myopia prevention and control lens

Abstract

The utility model relates to a kind of myopia prevention and control lens, involve lens design technical field, including lens body, the microlens structure being set on the lens outside lens body, and the light diffusion structure being set on the lens on the lens body, the microlens structure and the light diffusion structure exist overlapping area, and the area of the overlapping area is less than the area of the light diffusion structure, light diffusion structure and microlens structure partially overlap, in the same light diffusion structure range, the distance of microlens structure and lens body center can be greatly guaranteed, on the basis of guaranteeing myopia control effect, reduce the influence to eyeball movement, improve visual imaging quality, and because light diffusion structure and microlens structure partially overlap, light diffusion structure and microlens structure can be gently transitioned, realize the efficiency of synergism.

Description

Technical Field

[0001] This utility model belongs to the field of lens design technology, and specifically relates to a myopia control lens. Background Technology

[0002] In recent years, myopia among children and adolescents has become a major challenge in the global public health field, especially in Asia where it is prevalent. According to statistics from the National Health Commission of China in 2020, the overall myopia rate among children and adolescents in my country is as high as 52.7%. Currently, the mainstream myopia control lens technology on the market is mainly based on the principle of microstructure optical intervention, including microlens arrays, ring structures, light diffusion structures, and composite structures, which aim to slow down the growth of the axial length of the eye or accommodation abnormalities. However, in existing products, the microlens structure and the light diffusion structure are evenly distributed on the entire surface of the outer and inner lenses, and they completely overlap. Because the microlens structure and the light diffusion structure completely overlap, the microlens structure is too close to the center of the lens. Clinical data studies show that the microlens structure being too close to the center of the lens can affect eye movement and reduce visual imaging quality.

[0003] Therefore, in order to address the aforementioned technical problems, designing myopia control lenses that minimize the impact on eye movement while ensuring myopia control effectiveness, and that allow for a smooth transition between the microlens structure and the light diffusion structure to improve visual imaging quality are technical issues that need to be addressed by those skilled in the art. Utility Model Content

[0004] To address the aforementioned issues, this invention provides a myopia control lens that, while ensuring myopia control effectiveness, reduces the impact on eye movement, allows for a smooth transition between the microlens structure and the light diffusion structure, and improves visual imaging quality.

[0005] To achieve the above objectives, this utility model provides the following solution:

[0006] A myopia control lens includes a lens body, a microlens structure disposed on the outer lens of the lens body, and a light diffusion structure disposed on the inner lens of the lens body. The microlens structure and the light diffusion structure have an overlapping area, and the area of ​​the overlapping area is smaller than the area of ​​the light diffusion structure.

[0007] Preferably, the microlens structure comprises at least two concentric circles of microlens units, each microlens unit including multiple arrayed microlens bodies arranged in a ring.

[0008] Preferably, the lens body has a central region on the lens surface, the central region is circular, and the light diffusion structure is disposed in the circumferential direction of the central region.

[0009] Preferably, the diameter of the central region is 7.2 mm.

[0010] Preferably, the diameter of the microlens body is 0.5 mm to 1.5 mm, the microlens unit is configured with 9 rings, and the spacing between the microlens units is 0.3 mm to 1.0 mm.

[0011] Preferably, the ADD value of the microlens unit gradually increases from the direction closer to the central region to the direction farther away from the central region.

[0012] Preferably, the ADD values ​​of the 9 microlens units, from those closest to the central region to those furthest from the central region, are 3.50D, 3.50D, 4.00D, 4.00D, 4.50D, 4.50D, 5.00D, 5.00D, and 5.50D, respectively.

[0013] Preferably, the light diffusion structure comprises at least two concentric circles of light diffusion units arranged around the central region, and the light diffusion units include multiple diffusion points arranged in an array and forming a ring.

[0014] Preferably, the innermost light diffusion unit has a diameter of 7.2 mm, and the outermost light diffusion unit has a diameter of 10.1 mm.

[0015] Preferably, the innermost microlens unit has a diameter of 8.8 mm, and the outermost microlens unit has a diameter of 36.4 mm.

[0016] The present invention achieves the following technical advantages over the prior art:

[0017] Light diffusion structures can reduce contrast and improve visual imaging quality, while microlens structures can ensure control effects. However, if the microlens structure is too close to the center of the lens body, it will affect eye movement and reduce visual imaging quality. Therefore, this application partially overlaps the light diffusion structure and the microlens structure. Within the same light diffusion structure range, the distance between the microlens structure and the center of the lens body can be greatly guaranteed. While ensuring the myopia control effect, the impact on eye movement is reduced, and the visual imaging quality is improved. Furthermore, because the light diffusion structure and the microlens structure partially overlap, the transition between the two structures can be smooth, achieving a synergistic effect. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] AppendixFigure 1 This is a schematic diagram of the overall structure of the myopia control lens as disclosed in the embodiment of this utility model;

[0020] Appendix Figure 2 This is a schematic diagram of the front view structure of the myopia control lens disclosed in the embodiment of this utility model;

[0021] Among them, 1. Lens body; 2. Inner lens; 3. Outer lens; 4. Light diffusion structure; 5. Microlens structure; 6. Central region; 7. Microlens body; 8. Microlens unit. Detailed Implementation

[0022] 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.

[0023] The purpose of this invention is to provide a myopia control lens that, while ensuring the myopia control effect, reduces the impact on eye movement, makes the microlens structure and light diffusion structure transition smoothly, and improves the visual imaging quality.

[0024] refer to Figures 1-2 The myopia control lens disclosed in this embodiment of the present invention includes at least a lens body 1. The lens body 1 includes an outer lens 3 and an inner lens 2. The inner lens 2 is the side closer to the human eye, and the outer lens 3 is the side farther away from the human eye. A microlens structure 5 is provided on the outer lens 3 of the lens body 1, and a light diffusion structure 4 is provided on the inner lens 2 of the lens body 1. The microlens structure 5 and the light diffusion structure 4 have an overlapping area, the area of ​​which is smaller than the area of ​​the light diffusion structure 4. That is to say, the light diffusion structure 4 and the microlens structure 5 only partially overlap, not completely. The light diffusion structure 4 can reduce contrast and improve vision. While the microlens structure 5 can ensure the control effect, its proximity to the center of the lens body 1 can affect eye movement and reduce visual imaging quality. Therefore, in this embodiment, the light diffusion structure 4 and the microlens structure 5 are partially overlapped. Within the same range of the light diffusion structure 4, the distance between the microlens structure 5 and the center of the lens body 1 can be greatly guaranteed. This reduces the impact on eye movement and improves visual imaging quality while ensuring the myopia control effect. Furthermore, the partial overlap between the light diffusion structure 4 and the microlens structure 5 allows for a smooth transition between them, achieving a synergistic effect.

[0025] It should be noted that the microlens structure 5 is disposed on the outer lens 3 of the lens body 1 using one of the following processes: photolithography and etching, nanoimprint technology, two-photon grayscale photolithography, or hot pressing. The light diffusion structure 4 is disposed on the inner lens 2 of the lens body 1 using one of the following processes: coating composite technology or microstructure imprint technology.

[0026] refer to Figure 1 and Figure 2 In one implementation, the microlens structure 5 consists of at least two concentric rings of microlens units 8. Each microlens unit 8 includes multiple arrays of microlens bodies 7 arranged in a ring. The concentric ring structure ensures that the defocus signal forms a continuous closed-loop stimulation in the peripheral retina, avoiding signal interruption caused by the dispersed distribution of microlenses, thereby stably inhibiting axial elongation. The concentric ring arrangement ensures that the optical axis of the microlens always points to the center of eye rotation. When the eye rotates, the defocus signal is continuously projected in front of the retina, reducing visual shaking.

[0027] refer to Figure 1 and Figure 2 In one embodiment, a central region 6 is provided on the lens body. The central region 6 is circular, with a diameter of 7.2 mm, and the center of the central region 6 is the center of the lens body 1.

[0028] refer to Figure 1 and Figure 2 In one embodiment, the diameter of the microlens body 7 is 0.5 mm to 1.5 mm, the microlens unit 8 is set to 9 rings, and the spacing between the microlens units 8 is 0.3 mm to 1.0 mm. Preferably, the diameter of the microlens body 7 is 1 mm, and the spacing between the microlens units 8 is 0.6 mm.

[0029] It should be noted that the spacing between microlens units 8 refers to the spacing between concentric rings of adjacent microlens units 8. The innermost ring diameter of microlens unit 8 is 8.8 mm, and the outermost ring diameter is 36.4 mm.

[0030] refer to Figure 1 and Figure 2 In one implementation, the ADD (additional diffraction) value of the microlens unit 8 gradually increases from the direction closer to the central region 6 to the direction farther away from the central region 6. The retina is elliptical, with the curvature of the peripheral area being greater than that of the central area. The ADD increases from the center to the periphery, so that the defocused spot accurately covers the outer periphery of the retina, forming a more effective myopic defocus signal.

[0031] refer to Figure 1 and Figure 2In one embodiment, the ADD values ​​of the 8 microlens units 8 are +3.50D, +3.50D, +4.00D, +4.00D, +4.50D, +4.50D, +5.00D, +5.00D, and +5.50D respectively from the value near the center region 6 to the value far away from the center region 6.

[0032] refer to Figure 1 and Figure 2 In one embodiment, the light diffusion structure 4 is at least two concentric circles of light diffusion units arranged around the central region 6. The light diffusion units include multiple diffusion points arranged in an array and forming a ring.

[0033] refer to Figure 1 and Figure 2 Figure 1 Figure 2 In one implementation, the innermost light diffusion unit has a diameter of 7.2 mm, and the outermost light diffusion unit has a diameter of 10.1 mm.

[0034] Any adaptive changes made according to actual needs are within the protection scope of this utility model.

[0035] It should be noted that, for those skilled in the art, it is obvious that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered as exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A myopia control lens, characterized in that, The system includes a lens body, a microlens structure disposed on the outer lens of the lens body, and a light diffusion structure disposed on the inner lens of the lens body. The microlens structure and the light diffusion structure have an overlapping area, and the area of ​​the overlapping area is smaller than the area of ​​the light diffusion structure. The light diffusion structure overlaps with a portion of the microlens structure.

2. The myopia control lens according to claim 1, characterized in that, The microlens structure consists of at least two concentric circles of microlens units, each microlens unit comprising multiple arrayed microlens bodies arranged in a ring.

3. The myopia control lens according to claim 2, characterized in that, The lens body has a central region on the lens surface. The central region is circular, and the light diffusion structure is disposed in the circumferential direction of the central region.

4. The myopia control lens according to claim 3, characterized in that, The diameter of the central region is 7.2 mm.

5. The myopia control lens according to claim 3, characterized in that, The diameter of the microlens body is 0.5 mm to 1.5 mm, the microlens unit is set to 9 rings, and the spacing between the microlens units is 0.3 mm to 1.0 mm.

6. The myopia control lens according to claim 5, characterized in that, The ADD value of the microlens unit gradually increases from the direction closer to the central region to the direction farther away from the central region.

7. The myopia control lens according to claim 6, characterized in that, The ADD values ​​of the 9-ring microlens units, from those closest to the central region to those furthest from the central region, are 3.50D, 3.50D, 4.00D, 4.00D, 4.50D, 4.50D, 5.00D, 5.00D, and 5.50D, respectively.

8. The myopia control lens according to claim 3, characterized in that, The light diffusion structure consists of at least two concentric circles of light diffusion units arranged around the central region, and each light diffusion unit includes multiple diffusion points arranged in an array and forming a ring.

9. The myopia control lens according to claim 8, characterized in that, The innermost light diffusion unit has a diameter of 7.2 mm, and the outermost light diffusion unit has a diameter of 10.1 mm.

10. The myopia control lens according to claim 5, characterized in that, The innermost microlens unit has a diameter of 8.8 mm, and the outermost microlens unit has a diameter of 36.4 mm.

Images