Function module lens capable of regulating and controlling local contrast of fundus

Abstract

The utility model discloses a functional module lens capable of regulating and controlling the local contrast of fundus, which comprises a central area, a module area and an edge area which are distributed from inside to outside, the module area comprises at least three functional module rings, the multiple functional module rings are concentrically distributed along the central area, each functional module ring comprises a plurality of functional modules, each functional module provides defocus signal stimulation and regulates and controls fundus light intensity, a plurality of micro lenses or scatterers are arranged in each functional module or the micro lenses and the scatterers are distributed at the same time, when the plurality of micro lenses are distributed in each functional module, the number of the micro lenses is not less than three, the plurality of micro lenses are connected with one another in the circumferential direction of the functional module, and the number of the micro lenses is not less than three. And a blank area is formed among the plurality of micro lenses. According to the utility model, through combined use of multiple layers of functional modules, the local contrast of the fundus is regulated and controlled, and defocus signal stimulation is provided; a micro lens and a scatterer can be distributed on different functional modules, and the fundus light intensity is further optimized through combination of the micro lens and the scatterer; meanwhile, the fundus light intensity can be further regulated and controlled by optimizing module distribution.

Description

Technical Field

[0001] The utility model relates to a functional module lens, in particular to a functional module lens capable of adjusting and controlling the local contrast of the fundus. Background Art

[0002] High retinal imaging contrast is currently considered clinically to be the main reason for increasing the risk of myopia and aggravating myopia. The existing method is to manage vision development and delay myopia by balancing and reducing fundus imaging contrast. For example, the patent "Ophthalmic lens for treating myopia" (201780052098.7) discloses a lens with a dot pattern distributed on each lens. The dot pattern includes an array of dots spaced at a distance of 1 mm or less, each dot has a maximum size of 0.3 mm or less, and the dot pattern includes a clear aperture without dots, and the clear aperture has a maximum size greater than 1 mm. This lens has a striking feature, that is, except for a small transparent circular hole in the center, the other areas seem to have been "frosted", like a layer of semi-transparent film. This method of using scatterers can effectively reduce the fundus contrast, but when the scatterers are too deep and too dense, the contrast is reduced too much, which can cause harm to vision management. At the same time, a single scatterer distribution is not suitable for more people, and the distribution of scatterers alone does not have a defocusing effect and cannot form a defocus signal stimulus in front of the retina. The above contrast reduction design adopts an overall design and does not consider local functional design. How to improve the overall function of the lens by optimizing the function of the local area is an urgent problem that needs to be solved in myopia management lenses. Utility Model Content

[0003] Purpose of the utility model: The purpose of this utility model is to propose a functional module lens that can adjust the local contrast of the fundus, so as to adjust the fundus light intensity and achieve more effective myopia management.

[0004] Technical solution: The utility model includes a central area, a module area and an edge area distributed from the inside to the outside. The module area includes at least three rings of functional module rings, and multiple rings of functional module rings are concentrically distributed along the central area. Each ring of functional module rings includes multiple functional modules. Each functional module provides defocus signal stimulation and regulates fundus light intensity. A single functional module is provided with several microlenses or scatterers, or microlenses and scatterers are distributed simultaneously.

[0005] When multiple microlenses are distributed in the functional module, the number of microlenses is no less than three, and the multiple microlenses are connected to each other along the circumference of the functional module. A blank area is formed in the middle of the multiple microlenses. The imaging of the blank area on the retina balances the light intensity of the fundus position corresponding to the central blank area due to the defocus of the surrounding microlenses, thereby regulating the local contrast of the fundus.

[0006] The effective diameter range of the micro lens is 0.6 to 2 mm, and the additional defocus amount of the micro lens is -6D to +6D.

[0007] When a plurality of scatterers are distributed in the functional module, the effective diameter of the scatterers is 0.1-1 mm, and the intervals between the scatterers are less than 0.5 mm.

[0008] The multiple functional modules within the functional module ring are tightly connected in sequence, and the functional modules between adjacent functional module rings are tightly connected.

[0009] The module area is used to reduce the contrast of the image on the retina.

[0010] The central zone provides stable vision correction diopters.

[0011] The effective diameter of the central area does not exceed 12 mm, and the diopter range is -20D to 20D.

[0012] The edge region provides large field of view imaging.

[0013] Beneficial effects: The utility model regulates the local contrast of the fundus and provides defocus signal stimulation through the combined use of multiple layers of functional modules; different functional modules can distribute microlenses and scatterers, the light intensity modulated by the microlenses includes defocus signals and reduces contrast, and the scatterers only reduce contrast. The combination of the two can further optimize the fundus light intensity; at the same time, the fundus light intensity can also be further regulated by optimizing the module distribution, thereby achieving more effective myopia management. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the lens partitioning of the utility model;

[0015] Figure 2 It is a schematic diagram of the distribution of micro lenses within the functional module;

[0016] Figure 3 It is a schematic diagram of the distribution of scatterers within the functional module;

[0017] Figure 4 The shapes of the functional modules of the present invention are shown in FIG. 1 , wherein (a) is a hexagon; (b) is a triangle; and (c) is a circle.

[0018] Figure 5 Schematic diagram of the microlens distribution within the functional modules of the present invention, wherein (a) is the microlens distribution within a hexagonal functional module; (b) is the microlens distribution within a triangular functional module; and (c) is the microlens distribution within a circular functional module. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] likeFigure 1 As shown, the functional modular lens of the present invention that can adjust the local contrast of the fundus includes a central area 1, a modular area 2 and a peripheral area 3 distributed from the inside to the outside. The effective diameter of the central area 1 does not exceed 12 mm, and the diopter range is -20D to 20D. The central area 1 provides stable corrected vision diopter, the modular area 2 can reduce the contrast of the image on the retina, and the peripheral area 3 provides large field of view imaging.

[0021] The module area 2 includes at least three rings of functional module rings, and the multiple rings of functional module rings are concentrically distributed along the central area 1. Each ring of functional module rings includes multiple functional modules 201. The multiple functional modules 201 within each ring of functional module rings are closely connected in sequence, and the functional modules 201 between adjacent functional module rings are closely connected. Each functional module 201 can provide defocus signal stimulation and regulate the fundus light intensity. A single functional module 201 is provided with a number of microlenses 202 or scatterers 204, or microlenses 202 and scatterers 204 are distributed simultaneously. The light intensity modulated by the microlenses 202 includes defocus signals and reduces contrast, while the scatterers 204 only reduce contrast. The combination of the two can further optimize the fundus light intensity. The size and defocus amount of the microlenses 202 in different rings of functional modules 201 can be the same or different, and the size and spacing of the scatterers 204 can be the same or different.

[0022] When multiple micro lenses 202 are distributed in the functional module 201, as shown in FIG. Figure 2 As shown, there are no fewer than three microlenses 202, which are connected circumferentially along the functional module 201. A blank area 203 is formed between the multiple microlenses 202. The image of the blank area 203 on the retina balances the light intensity at the fundus corresponding to the central blank area due to the defocus of the surrounding microlenses 202, thereby regulating the local contrast of the fundus. The non-central blank area provides a defocus signal in front of the retina, which also reduces the fundus contrast. The effective diameter of the microlenses 202 ranges from 0.6 to 2 mm, and the additional defocus of the microlenses 202 ranges from -6D to +6D.

[0023] When multiple scatterers 204 are distributed in the functional module 201, such as Figure 3 As shown, the effective diameter of the scatterers 204 is 0.1-1 mm, and the intervals between them are less than 0.5 mm.

[0024] like Figure 4 and Figure 5 As shown, the shape of the functional module 201 is not limited to hexagonal, triangular, circular, etc. The material of the functional module lens is not limited to resin, plastic, glass, etc.

[0025] Example 1

[0026] like Figure 1 and Figure 4(a), the utility model provides a kind of functional module lens of adjustable control fundus local contrast, including center area 1, module area 2 and edge area 3.The effective diameter of center area 1 is 9mm, and diopter is-1D.Edge area 3 diopter increases 0.25D compared with center diopter.Module area 2 is composed of 5 ring functional modules 201.Microlens 202 effective diameter 0.9mm, and the additional defocus amount of microlens 202 is+2.5D~+4.5D.The shape of functional module 201 and the distribution of microlens 202 are as shown in Figure 5 (a).The defocus amount of microlens in module increases from lens center outward.The material of a kind of functional module lens of adjustable control fundus local contrast is PC plastic.

[0027] Example 2

[0028] As Figure 1 And Figure 4 (b), the utility model provides a kind of functional module lens of adjustable control fundus local contrast, including center area 1, module area 2 and edge area 3.The effective diameter of center area 1 is 8mm, and diopter is-2D.Edge area 3 diopter is same with center diopter.Module area 2 is composed of 5 ring functional modules 201.Microlens 202 effective diameter 1mm, and the additional defocus amount of microlens 202 is+4D.The shape of functional module 201 and the distribution of microlens 202 are as shown in Figure 5 (b).Microlens size and defocus amount are same in each module.The material of a kind of functional module lens of adjustable control fundus local contrast is resin.

[0029] Example 3

[0030] As Figure 1 And Figure 4 (c), the utility model provides a kind of functional module lens of adjustable control fundus local contrast, including center area 1, module area 2 and edge area 3.The effective diameter of center area 1 is 10mm, and diopter is-4D.Edge area 3 diopter increases 0.5D compared with center diopter.Module area 2 is composed of 5 ring functional modules 201.Microlens 202 effective diameter range 0.8~1.2mm, and microlens effective diameter increases in module from lens center outward, and the additional defocus amount of microlens 202 is+4D.The shape of functional module 201 and the distribution of microlens 202 are as shown in Figure 5 (c).The material of a kind of functional module lens of adjustable control fundus local contrast is resin.

[0031] Example 4

[0032] As Figure 1The present invention provides a functional modular lens capable of adjusting local fundus contrast, comprising a central zone 1, a modular zone 2, and a peripheral zone 3. Central zone 1 has an effective diameter of 10 mm and a diopter of -4 D. The diopter of peripheral zone 3 is 0.5 D higher than that of the central zone. Modular zone 2 comprises five rings of functional modules 201. Scattering elements 204 have an effective diameter of 0.2 mm and are spaced less than 0.5 mm apart. Scattering elements 204 have uniform effective diameters and are spaced at varying intervals.

[0033] The present invention increases the degree of freedom of optimization by setting modules. Microlenses can be distributed in the modules to provide a defocus effect and scatterers can be distributed. The microlenses in the modules are used in combination, and a blank area is left in the center of the module. The imaging of the blank area on the retina balances the light intensity of the fundus position corresponding to the central blank area due to the defocus of the surrounding microlenses, thereby regulating the local contrast of the fundus. The non-central blank area can provide a defocus signal in front of the retina. This type of defocus signal will also reduce the fundus contrast; microlenses and scatterers can be distributed in different modules, and the combination of the two can further optimize the fundus light intensity; at the same time, by optimizing the module distribution, such as the number of microlenses in the same ring, the distribution of microlenses in different rings, etc., the fundus light intensity can be further regulated to achieve more effective myopia management, which can be obtained by those skilled in the art through simple comparison.

Claims

1. A functional module lens capable of adjusting local contrast of the fundus, characterized in that: It includes a central area, a module area and an edge area distributed from the inside to the outside. The module area includes at least three rings of functional module rings. Multiple rings of functional module rings are concentrically distributed along the central area. Each ring of functional module rings includes multiple functional modules. Each functional module provides defocus signal stimulation and regulates fundus light intensity. A single functional module is equipped with several microlenses or scatterers, or microlenses and scatterers are distributed simultaneously.

2. The functional module lens capable of adjusting local fundus contrast according to claim 1, characterized in that: When a plurality of micro lenses are distributed in the functional module, the number of the micro lenses is no less than three, the plurality of micro lenses are connected to each other along the circumference of the functional module, and a blank area is formed among the plurality of micro lenses.

3. The functional module lens capable of adjusting local fundus contrast according to claim 2, characterized in that: The effective diameter range of the micro lens is 0.6 to 2 mm, and the additional defocus amount of the micro lens is -6D to +6D.

4. The functional module lens capable of adjusting local fundus contrast according to claim 1, characterized in that: When a plurality of scatterers are distributed in the functional module, the effective diameter of the scatterers is 0.1-1 mm, and the intervals between the scatterers are less than 0.5 mm.

5. The functional module lens capable of adjusting local fundus contrast according to claim 1, characterized in that: The multiple functional modules within the functional module ring are tightly connected in sequence, and the functional modules between adjacent functional module rings are tightly connected.

6. The functional module lens capable of adjusting local fundus contrast according to claim 1, characterized in that: The module area is used to reduce the contrast of the image on the retina.

7. The functional module lens capable of adjusting local fundus contrast according to claim 6, characterized in that: The central zone provides stable vision correction diopters.

8. The functional module lens capable of adjusting local fundus contrast according to claim 7, characterized in that: The effective diameter of the central area does not exceed 12 mm, and the diopter range is -20D to 20D.

9. The functional module lens capable of adjusting local fundus contrast according to claim 7, characterized in that: The edge region provides large field of view imaging.

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