Point diffusion prism lens composite lens

Abstract

The utility model discloses a point diffusion prism lens composite lens, which relates to the technical field of myopic glasses, and comprises a point diffusion lens and a second lens arranged on the inner side or the outer side of the point diffusion lens, and the second lens is selected from one of a combined prism lens, a progressive lens or a defocus lens. The combined prism lens is formed by combining a prism and a convex lens, and the convex lens is located between the prism and the point diffusion lens. The combined prism lens is wedge-shaped, the thicker end of the combined prism lens is a base, and the thinner end of the combined prism lens is a base top. According to the point diffusion prism lens composite lens, the point diffusion lens is respectively compounded with the combined prism lens, the progressive lens or the out-of-focus lens, so that incident light is scattered, soft optical transition is formed in a peripheral view field, and the design reduces the signal intensity difference between adjacent view cone cells, namely, reduces the contrast ratio; therefore, 'elongation signals' transmitted from the retina to the eyeball are inhibited, and eye axis growth is slowed down.

Description

Technical Field

[0001] This utility model relates to the field of myopia glasses technology, specifically to a dot diffusion prism lens composite lens. Background Technology

[0002] In recent years, myopia among school children has been increasing rapidly. The main reason is that children spend more time using their eyes at close range during their growth period. When using their eyes at close range, the ciliary muscle of the eyeball contracts to adjust the focus, and the extraocular muscles converge to make the eyes align with the target. The pressure generated by the contraction of the ciliary muscle and the convergence of the extraocular muscles will gradually lengthen the axial length of the eye over a long period of time, thus causing the degree of myopia to rise.

[0003] Therefore, it is necessary to propose a point diffusion prism lens composite lens to solve the above problems. Utility Model Content

[0004] Technical problem to be solved: The purpose of this utility model is to provide a dot diffusion prism lens composite lens to solve the problem mentioned in the background art that the myopia of school children has been increasing rapidly in recent years. The main reason is that children spend more time using their eyes at close range during their growth period. When using their eyes at close range, the ciliary muscle of the eyeball will contract to adjust the focal length, and the extraocular muscles will converge to make the two eyes align with the target. Due to the pressure generated by the contraction of the ciliary muscle and the convergence of the extraocular muscles, the axial length of the eye will gradually increase over time, thus causing the degree of myopia to rise.

[0005] Technical Solution: To achieve the above objectives, this utility model is implemented through the following technical solution: a dot diffuser lens composite lens, including a dot diffuser lens and a second lens disposed inside or outside the dot diffuser lens. The second lens is selected from a combination prism lens, a progressive lens, or a defocus lens. The combination prism lens is composed of a triangular prism and a convex lens, with the convex lens located between the triangular prism and the dot diffuser lens. The combination prism lens is wedge-shaped, with the thicker end of the combination prism lens serving as the base and the thinner end as the base apex. The thickness of the combination prism lens gradually decreases from the base to the base apex until it smoothly connects with the dot diffuser lens.

[0006] Preferably, the combined prism lens, progressive lens, and defocus lens all completely overlap with the dot diffuser lens, which includes a transparent area and a dot diffuser area, with the transparent area located at the optical center of the dot diffuser lens.

[0007] Preferably, the progressive lens includes a central zone, a distance viewing zone, a near viewing zone, and an astigmatic zone, and the defocus lens includes a central optical zone and a defocus zone.

[0008] Preferably, the combined prism lens is located in the middle of the lower region of the point diffuser lens, and the overlapping surface of the combined prism lens and the point diffuser lens is circular.

[0009] Preferably, the combined prism lens is located below the point diffuser lens, and the lower edge of the base of the combined prism lens coincides with the lower edge of the point diffuser lens, and the upper edge of the top of the base of the combined prism lens is a straight line or an arc.

[0010] Beneficial effects: Compared with the prior art, this utility model provides a dot-diffusing prism lens composite lens. The dot-diffusing prism lens composite lens has a unique structure and is easy to use. By combining the dot-diffusing lens with a combination prism lens, a progressive lens or a defocus lens, the incident light is scattered, so that the peripheral vision forms a soft optical transition. This design reduces the signal intensity difference between adjacent cone cells, that is, reduces the contrast, thereby inhibiting the "elongation signal" transmitted from the retina to the eyeball and slowing down the growth of the axial length of the eye. Attached Figure Description

[0011] Figure 1 This is a schematic diagram showing that the dot diffusion lens and the second lens are completely overlapped in Embodiment 1 of this utility model;

[0012] Figure 2 This is a schematic diagram showing the position of the combined prism lens in Embodiment 2 of this utility model;

[0013] Figure 3 This is a schematic diagram showing that the upper edge of the combined prism lens in Embodiment 3 of this utility model is a straight line;

[0014] Figure 4 This is a schematic diagram showing that the upper edge of the combined prism lens in Embodiment 3 of this utility model is curved;

[0015] Figure 5 This is a schematic diagram of the composite of a progressive lens and a dot diffusion lens of this utility model;

[0016] Figure 6 This is a schematic diagram of the combination of the defocus lens and the dot diffusion lens of this utility model.

[0017] In the diagram: 1. Dot diffuser lens; 11. Transparent area; 12. Dot diffuser area; 2. Second lens; 21. Combined prism lens; 22. Progressive lens; 221. Central area; 222. Distance viewing area; 223. Close viewing area; 224. Astigmatism area; 23. Defocus lens; 231. Central optical area; 232. Defocus area. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Example 1: This Example 1 provides a dot-diffusing prism lens composite lens, which is a direct improvement on existing myopia lenses. It has a unique structure. Please refer to [link / reference]. Figure 1-5As shown, the lens includes a dot diffuser lens 1 and a second lens 2 disposed inside or outside the dot diffuser lens 1. The dot diffuser lens 1 includes a transparent area 11 and a dot diffuser area 12, and the transparent area 11 is located at the optical center of the dot diffuser lens 1. The second lens 2 is selected from one of a combined prism lens 21, a progressive lens 22, or a defocus lens 23. The combined prism lens 21, the progressive lens 22, and the defocus lens 23 all completely overlap with the dot diffuser lens 1. The combined prism lens 21 is composed of a prism and a convex lens, and the convex lens is located between the prism and the dot diffuser lens 1. The progressive lens 22 includes a central area 221, a distance viewing area 222, a near viewing area 223, and an astigmatic area 224. The defocus lens 23 includes a central optical area 231 and a defocus area 232. The combined prism lens 21 is wedge-shaped, and the thicker end of the combined prism lens 21 is the base and the thinner end is the base top. The thickness of the combined prism lens 21 gradually decreases from the base to the base top until it is smoothly connected to the dot diffuser lens 1.

[0020] There are various processing methods for dot diffusion points. For example, regular or irregular dot diffusion points, lines, or surfaces can be made on the working surface of the lens mold A, B, or both molds by hot-melt molding, cold-working grinding, or engraving. After the mold is closed, the lens raw material is injected and produced by thermosetting, photocuring, or other methods. Alternatively, regular or irregular dot diffusion points, lines, or surfaces can be made on the concave or convex surface and both sides of the lens by grinding or engraving.

[0021] Working principle: Dot diffusion technology is an optical intervention method based on the theory of retinal contrast. Through a specially designed lens structure, it reduces high-contrast signals on the retina and weakens the light entering the eye, thereby slowing down the progression of myopia. When myopic individuals use this lens, they can see clearly through the transparent area 11 at the optical center of the dot diffusion lens 1. The dot diffusion points within the dot diffusion area 12 scatter the incident light, creating a soft optical transition in the peripheral vision. This design reduces the signal intensity difference between adjacent cone cells, i.e., reduces contrast, thereby inhibiting the "elongation signal" transmitted from the retina to the eyeball and slowing down the growth of the axial length of the eye. Dot diffusion technology defocuses light through artificial intervention, replicating and simulating the low-contrast visual state in the natural environment, avoiding the myopia progression caused by high-contrast stimulation, and achieving a prevention and control effect.

[0022] In addition, when the dot diffuser lens 1 is combined with the prism lens 21, the convex lens has a converging effect on divergent light rays, such as scattered light rays emitted by nearby objects. By converging light rays, the convex lens forces the lens of the eye to contract in the opposite direction of myopia. This process adjusts the shape and position of the lens, which helps to restore the normal accommodation function of the lens, thereby achieving the purpose of treating pseudomyopia. The prism changes the propagation direction of scattered light rays from nearby objects by refracting light rays, reducing the clamping and pressure of the extraocular muscles on the eyeball. After the convex lens and the prism are combined, they can not only treat pseudomyopia, but also prevent myopia from worsening. By improving the pressure state of the extraocular muscles on the eyeball, the elongation of the eye axis is controlled.

[0023] When the dot diffuser lens 1 is combined with the progressive lens 22, the light control capability of the dot diffuser lens 1 can further optimize the visual effect of the progressive lens 22, especially when switching between different distances, it can maintain a smoother and more natural visual transition; in addition, the addition of the dot diffuser lens 1 can further reduce glare and unnecessary scattered light, reduce the accommodation burden on the eyes, and thus improve wearing comfort.

[0024] When the dot diffuser lens 1 is combined with the defocus lens 23, the dot diffuser lens 1 optimizes the light distribution characteristics, which can further improve the visual quality of the defocus lens 23, while maintaining or enhancing its myopia control effect, thus achieving the dual goals of "seeing clearly" and "controlling myopia".

[0025] Example 2: The difference between Example 2 and Example 1 is that the combined prism lens 21 is located in the middle of the lower region of the dot diffuser lens 1, and the overlapping surface of the combined prism lens 21 and the dot diffuser lens 1 is circular.

[0026] Example 3: The difference between Example 3 and Example 1 is that the combined prism lens 21 is located at the lower part of the dot diffuser lens 1, and the lower edge of the base of the combined prism lens 21 coincides with the lower edge of the dot diffuser lens 1. The upper edge of the base of the combined prism lens 21 is a straight line or an arc. By making the lower edge of the combined prism lens 21 coincide with the lower edge of the dot diffuser lens 1, a complete image can be formed when viewing an object through the combined prism lens 21.

[0027] Example 4: The difference between Example 4 and Example 1 is that there are multiple ways to combine the progressive lens 22 or the defocus lens 23 with the dot diffusion lens 1. For example, a dot diffusion area 12 can be set on the concave or convex surface of the progressive lens 22 and the defocus lens 23, except for the optical center area.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A point diffusion lenticular composite lens comprising a point diffusion lens (1), characterized in that: It also includes a second lens (2) disposed inside or outside the dot diffuser lens (1). The second lens (2) is selected from a combination prism lens (21), a progressive lens (22), or a defocus lens (23). The combination prism lens (21) is composed of a prism and a convex lens, and the convex lens is located between the prism and the dot diffuser lens (1). The combination prism lens (21) is wedge-shaped, and the thicker end of the combination prism lens (21) is the base and the thinner end is the base top. The thickness of the combination prism lens (21) gradually decreases from the base to the base top until it is smoothly connected to the dot diffuser lens (1).

2. The point spread prism-transmission lens compound lens of claim 1, wherein: The combined prism lens (21), progressive lens (22) and defocus lens (23) all completely overlap with the dot diffuser lens (1). The dot diffuser lens (1) includes a transparent area (11) and a dot diffuser area (12), and the transparent area (11) is located at the optical center of the dot diffuser lens (1).

3. The point spread prism-transmission lens compound lens of claim 2, wherein: The progressive lens (22) includes a central zone (221), a distant viewing zone (222), a near viewing zone (223), and an astigmatic zone (224), while the defocus lens (23) includes a central optical zone (231) and a defocus zone (232).

4. The point-diffraction-aperture lenticular composite lens of claim 1, wherein: The combined prism lens (21) is located in the middle of the lower region of the point diffuser lens (1), and the overlapping surface of the combined prism lens (21) and the point diffuser lens (1) is circular.

5. The point-diffraction-aperture lenticular composite lens of claim 1, wherein: The combined prism lens (21) is located below the dot diffuser lens (1), and the lower edge of the base of the combined prism lens (21) coincides with the lower edge of the dot diffuser lens (1). The upper edge of the base of the combined prism lens (21) is a straight line or an arc.

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