Lens for correcting hyperopia defocus and providing local defocus optical signal stimulation

Abstract

The utility model discloses a lens for correcting hyperopia defocus and providing local defocus optical signal stimulation, which comprises an annular focal plane substrate and a defocus signal stimulation area, the defocus signal stimulation area is positioned on the surface of the annular focal plane substrate, and an optical refraction area of the annular focal plane substrate comprises a central equal diopter area, a middle correction area and an edge foot correction area; the out-of-focus signal stimulation area is composed of micro-lens structures which are distributed in an annular mode. The utility model has the beneficial effects that the ring focus curved surface is adopted to correct the hyperopia defocus, the harm of the hyperopia defocus to the deepening of the myopia of human eyes is relieved, and meanwhile, the edge position of the lens is fully corrected, so that the observation of the human eyes is clearer; the out-of-focus signal stimulation area can provide positive or negative out-of-focus optical signal stimulation and is used for stimulating the forward or backward movement trend of the retina, four types of out-of-focus amounts are adapted according to human eye adjusting force, more people are adapted, and myopia can be managed more effectively.

Description

Technical Field

[0001] The utility model relates to a spectacle lens, in particular to a lens capable of correcting hyperopic defocus and providing local defocus light signal stimulation, belonging to the technical field of spectacle lenses. Background Art

[0002] According to the theory that the human eye's hyperopic defocus affects the increase in myopia, people with axial myopia are prone to hyperopic defocus behind the retina after wearing single-focus lenses and fully correcting the central macular area, causing the peripheral image to be formed behind the retina, thereby inducing the eye axis to stretch backward, causing compensatory increase in the eye axis, and further deepening myopia. The development of aspheric lenses can correct some hyperopic defocus by increasing the asphericity of the lens from the center to the edge, but the degree of the lens increases more and more towards the edge. When the human eye observes through the edge, because the degree is not fully corrected, it will not be able to see things clearly, but it is easy to increase the degree. How to correct hyperopic defocus and ensure clear imaging at the edge through face design has become a difficult point.

[0003] Existing peripheral defocus lenses (in the form of additional microstructures) claim to be able to correct hyperopic defocus, but from the principle of optical imaging, they can only correct local areas and cannot correct hyperopic defocus as a whole, and the added microstructures are basically positive defocus. However, with the development of clinical technology, microstructures that increase negative defocus can also effectively manage myopia. The theory that increasing negative defocus can effectively delay myopia is contrary to the theory that increasing positive defocus can correct hyperopic defocus, so the theory of correcting hyperopic defocus by adding microstructures needs further discussion. Existing peripheral defocus lenses basically have one or two fixed types of defocus, are not subdivided according to the population, and are mostly subdivided by age, not according to the adjustment ability of the human eye. How to design more suitable defocus stimulation signal lenses based on the adjustment ability and age of the human eye has become a problem that needs to be solved urgently.

[0004] In summary, the main problems currently faced by myopia management lenses are how to correct hyperopic defocus through facial design, ensure clear edge imaging, and design lenses with more suitable defocus stimulation signals based on the human eye's accommodation ability and age. Summary of the invention

[0005] Purpose of the invention: The purpose of the utility model is to provide a lens that corrects hyperopic defocus and provides local defocus light signal stimulation. Hyperopic defocus is corrected by the face shape, and additional microstructures provide defocus light signal stimulation to facilitate more effective management of myopia.

[0006] Technical solution: A lens for correcting hyperopic defocus and providing local defocus light signal stimulation, comprising a ring-focal plane substrate and a defocus signal stimulation area, wherein the defocus signal stimulation area is located on the surface of the ring-focal plane substrate, and the optical refractive area of ​​the ring-focal plane substrate comprises a central isopoptotic area, an intermediate correction area and an edge full correction area; the defocus signal stimulation area is composed of a microlens structure distributed in a ring.

[0007] The utility model adopts an annular focus surface to correct hyperopic defocus, thereby alleviating the harm of hyperopic defocus on deepening myopia of the human eye. At the same time, the edge position of the lens is sufficient to correct the light, so that the human eye can observe more clearly. The defocus signal stimulation area can provide positive or negative defocus light signal stimulation to stimulate the forward or backward movement trend of the retina, which can more effectively manage myopia.

[0008] Preferably, the central isopoptotic zone is located in the central area of ​​the lens, has a diameter not exceeding 9 mm, and the absolute value of the diopter variation range from the central area to the edge of the area should be less than 0.1D, and light is focused on the retina when passing through the central area.

[0009] Preferably, the intermediate correction zone is an annular area extending outward from the edge of the central isopreter zone and 30 to 45 mm away from the edge of the central isopreter zone, and the diopter of the intermediate correction zone varies from the center of the lens to the outside, with a variation range of 0.5D to 2.5D.

[0010] Preferably, the marginal correction zone is the area from the outermost edge of the middle correction zone to the edge of the lens, the absolute value of the diopter of the marginal correction zone does not exceed the absolute value of the diopter of the central equal diopter zone, and the absolute value of the diopter variation range of this area is less than 0.5D.

[0011] Preferably, a region without a microlens structure is provided at the center of the annularly distributed microlens structure of the defocus signal stimulation zone, and the region without a microlens structure is located at the center of the lens and has a diameter not exceeding 12 mm; the annularly distributed microlens structure of the defocus signal stimulation zone includes 8-16 annular microlens rings composed of single microlenses.

[0012] Preferably, the effective diameter of the single microlens is in the range of 0.7-1.4 mm, and the interval between the single microlenses is in the range of 0.2-1.6 mm. The shape of the single microlens is not limited to circular microlens, microcylindrical lens, hexagonal, elliptical, Gaussian, annular, etc. The single microlens can be convex or concave relative to the annular focal plane substrate.

[0013] Preferably, the defocus signal stimulation area is divided into: weak accommodation ability defocus, medium accommodation ability defocus, high accommodation ability defocus and adult defocus according to the strength of the stimulation signal.

[0014] Preferably, the absolute value range of the defocus amount of a single microlens with weak adjustment ability is 1.8D~2.5D, the absolute value range of the defocus amount of a single microlens with medium adjustment ability is 2.5D~3.5D, the absolute value range of the defocus amount of a single microlens with high adjustment ability is 3.5D~5.5D, and the absolute value range of the defocus amount of a single microlens for adult defocus is 0.5D~2.5D.

[0015] Preferably, the relationship between the individual microlens intervals of the weak accommodation ability defocus, medium accommodation ability defocus, high accommodation ability defocus and adult defocus is: adult defocus ≥ weak accommodation ability defocus ≥ medium accommodation ability defocus ≥ high accommodation ability defocus.

[0016] Preferably, the defocus amount distribution of a single microlens in the defocus signal stimulation area is a gradual change in the defocus amount gradient value circle by circle, and the gradient value is greater than or equal to 0, and can be a fixed value or a gradient change.

[0017] Beneficial effects: The utility model corrects hyperopic defocus by adopting an annular focus surface, thereby reducing the harm of hyperopic defocus on the deepening of myopia of the human eye. At the same time, the edge of the lens is sufficiently corrected for light, allowing the human eye to observe more clearly; the defocus signal stimulation area can provide positive or negative defocus light signal stimulation to stimulate the forward or backward movement trend of the retina, and adapts four types of defocus amounts according to the accommodation power of the human eye, adapting to more people, so as to facilitate more effective management of myopia. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the lens structure of the utility model;

[0020] Figure 2 It is a schematic diagram of a high-adjustability defocus lens of the utility model;

[0021] Figure 3 It is a schematic diagram of the adult defocus lens of the present invention. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0025] like Figure 1As shown, a lens for correcting hyperopic defocus and providing local defocus optical signal stimulation comprises a ring-focal surface substrate 1 and a defocus signal stimulation area 2, and the defocus signal stimulation area 2 is covered on the ring-focal surface substrate 1; the optical refractive area of ​​the ring-focal surface substrate 1 is divided into a central equal refractive power area 101, an intermediate correction area 102 and an edge full correction area 103; the defocus signal stimulation area 2 generates a local defocus optical signal stimulation in front of or behind the retina, and generates a forward or backward movement signal to the fundus; the strength of the defocus signal in the utility model is divided into four categories according to the adjustment ability of the human eye and the age of the wearer: weak adjustment ability defocus, medium adjustment ability defocus, high adjustment ability defocus and adult defocus. The central equal refractive power area 101 of the ring-focal surface substrate 1 is an area with a diameter of no more than 9 mm from the center of the lens to the outside, and its central refractive power is located at the center of the area. The absolute value of the range of refractive power change from the center of the area to the edge of the area should be less than 0.1D, and the light is focused on the retina when passing through the central first refractive power area. The middle correction area 102 of the toroidal surface substrate 1 is an area from the edge of the central isopoptotic area to the outside and 30 to 45 mm away from the edge of the central isopoptotic area. The diopter of this area changes from the center of the lens to the outside, and the range of change is 0.5D to 2.5D. The marginal full correction area 103 in the toroidal surface substrate 1 is an area from the outermost edge of the middle correction area 102 to the edge of the lens. Its diopter is equal to or close to that of the central isopoptotic area. The absolute value of the diopter change range of this area should be less than 0.5D.

[0026] The annularly distributed microlens structure of the defocus signal stimulation area 2 includes 8-16 annular microlens circles composed of single microlenses. The center is no more than 12mm for the area without microlens structure, and the rest is the distribution area of ​​single microlens structure. The effective diameter range of single microlens structure is 0.7~1.4mm. The shape of single microlens is not limited to microlens, microcylindrical lens, hexagon, ellipse, Gaussian, annular and other shapes. The interval range of single microlens is 0.2~1.6mm. The single microlens can be convex or concave relative to the annular focal plane substrate. The size, effective diameter and interval of single microlens in the ring can be consistent or different. The absolute value range of the defocus of single microlens with weak adjustment ability is 1.8D~2.5D, the absolute value range of the defocus of single microlens with medium adjustment ability is 2.5D~3.5D, the absolute value range of the defocus of single microlens with high adjustment ability is 3.5D~5.5D, and the absolute value range of the defocus of single microlens for adult defocus is 0.5D~2.5D.

[0027] The relationship between the microlens spacing of weak accommodation defocus, medium accommodation defocus, high accommodation defocus and adult defocus is: adult defocus ≥ weak accommodation defocus ≥ medium accommodation defocus ≥ high accommodation defocus. The microstructure defocus amount distribution in the defocus signal stimulation area can be a fixed value or gradually change with the ring position gradient. Embodiment 1

[0028] like Figure 2 , a lens for correcting hyperopic defocus and providing local defocus optical signal stimulation, comprising a ring focal plane substrate 1 and a defocus signal stimulation area 2, the defocus signal stimulation area 2 covering the ring focal plane substrate 1; the utility model has high adjustment ability defocus. The central equal diopter area 101 of the ring focal plane substrate 1 is an area with a diameter of 8mm from the center of the lens to the outside, and the absolute value of the diopter change range from the center of the area to the edge of the area should be less than 0.1D. The middle correction area 102 of the ring focal plane substrate 1 is an area 30mm outward from the edge of the central equal diopter area, and the diopter of this area changes in the direction from the center of the lens to the outside, and the change range is 0.5D~1.5D. The edge full correction area 103 of the ring focal plane substrate 1 is the area from the outermost edge of the middle correction area 102 to the edge of the lens, and its diopter is equal to or close to that of the central equal diopter area, and the absolute value of the diopter change range of this area should be less than 0.5D. The defocus signal stimulation area 2 is composed of 13 rings of microlens structures. The diameter of the central area without microlens structure is 10mm, the diameter of the 1-4 ring microlens structure is 1mm, and the absolute value range of defocus is 4.5D. The diameter of the 5-8 ring microlens structure is 1.1mm, and the absolute value range of defocus is 4.0D. The diameter of the 9-13 ring microlens structure is 1.2mm, and the absolute value range of defocus is 3.5D. The shape of a single microlens is a circular microlens, and the interval range of a single microlens is 0.2mm. Embodiment 2

[0029] like Figure 3 , a lens for correcting hyperopic defocus and providing local defocus optical signal stimulation, comprising a ring focal plane substrate 1 and a defocus signal stimulation area 2, the defocus signal stimulation area 2 is covered on the ring focal plane substrate 1; the utility model has adult defocus. The central equal diopter area 101 of the ring focal plane substrate 1 is an area with a diameter of 9mm from the center of the lens to the outside. The middle correction area 102 of the ring focal plane substrate 1 is an area 35mm outward from the edge of the central equal diopter area, with an incremental range of 0.5D~2.5D. The edge correction area 103 of the ring focal plane substrate 1 is an area from the outermost edge of the middle correction area 102 to the edge of the lens, and its refractive power is equal to or close to that of the central equal diopter area. The defocus signal stimulation area 2 is composed of 13 circles of single microlenses, and the effective diameter range of a single microlens is 0.9mm. The shape of a single microlens is a circular microlens, and the spacing range of a single microlens is 0.9mm.

[0030] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0031] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A lens for correcting hyperopic defocus and providing local defocus light signal stimulation, characterized in that: It comprises a ring focal plane substrate (1) and a defocus signal stimulation area (2), wherein the defocus signal stimulation area (2) is located on the surface of the ring focal plane substrate (1). The optical refractive area of ​​the annular focal plane substrate (1) comprises a central isopoptotic area (101), an intermediate correction area (102) and an edge full correction area (103); the defocus signal stimulation area (2) is composed of a microlens structure distributed in an annular pattern.

2. The lens for correcting hyperopic defocus and providing local defocus light signal stimulation according to claim 1, characterized in that: The central isopoptotic zone (101) is located in the central area of ​​the lens, has a diameter not exceeding 9 mm, and the absolute value of the diopter variation range from the central area to the edge of the area should be less than 0.1D, and light is focused on the retina when passing through the central area.

3. The lens for correcting hyperopic defocus and providing local defocus light signal stimulation according to claim 2, characterized in that: The middle correction zone (102) is an annular area extending outward from the edge of the central isopreter zone (101) and 30 to 45 mm from the edge of the central isopreter zone (101). The diopter of the middle correction zone (102) changes gradually from the center of the lens to the outside, and the range of the change is 0.5D to 2.5D.

4. The lens for correcting hyperopic defocus and providing local defocus light signal stimulation according to claim 3, characterized in that: The marginal correction zone (103) is a region from the outermost edge of the middle correction zone (102) to the edge of the lens, the absolute value of the diopter of the marginal correction zone (103) does not exceed the absolute value of the diopter of the central equal diopter zone (101), and the absolute value of the diopter variation range of the region is less than 0.5D.

5. The lens for correcting hyperopic defocus and providing local defocus light signal stimulation according to claim 1, characterized in that: The center of the annularly distributed microlens structure of the defocus signal stimulation area (2) is provided with an area without a microlens structure, and the area without a microlens structure is located at the center of the lens and has a diameter not exceeding 12 mm; the annularly distributed microlens structure of the defocus signal stimulation area (2) includes 8-16 annular microlens circles composed of single microlenses.

6. The lens for correcting hyperopic defocus and providing local defocus light signal stimulation according to claim 5, characterized in that: The effective diameter of a single microlens ranges from 0.7 to 1.4 mm, and the interval between single microlenses ranges from 0.2 to 1.6 mm.

7. The lens for correcting hyperopic defocus and providing local defocus light signal stimulation according to claim 6, characterized in that: The defocus signal stimulation area (2) is divided into: weak accommodation ability defocus, medium accommodation ability defocus, high accommodation ability defocus and adult defocus according to the strength of the stimulation signal.

8. The lens for correcting hyperopic defocus and providing local defocus light signal stimulation according to claim 7, characterized in that: The absolute value range of the defocus amount of a single microlens with weak accommodation ability is 1.8D~2.5D, the absolute value range of the defocus amount of a single microlens with medium accommodation ability is 2.5D~3.5D, the absolute value range of the defocus amount of a single microlens with high accommodation ability is 3.5D~5.5D, and the absolute value range of the defocus amount of a single microlens for adult defocus is 0.5D~2.5D.

9. The lens for correcting hyperopic defocus and providing local defocus light signal stimulation according to claim 7, characterized in that: The relationship between the single microlens intervals of the weak accommodation ability defocus, medium accommodation ability defocus, high accommodation ability defocus and adult defocus is: adult defocus ≥ weak accommodation ability defocus ≥ medium accommodation ability defocus ≥ high accommodation ability defocus.

10. The lens for correcting hyperopic defocus and providing local defocus light signal stimulation according to claim 7, characterized in that: The defocus amount distribution of a single microlens in the defocus signal stimulation area (2) is a gradual change in the defocus amount gradient value in each circle, and the gradient value is greater than or equal to 0.

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