Double-curved-surface out-of-focus composite lens and double-curved-surface out-of-focus composite glasses

Abstract

The invention relates to the technical field of myopia prevention and control lenses, in particular to a double-curved-surface out-of-focus composite lens and double-curved-surface out-of-focus composite glasses. The double-curved-surface out-of-focus composite lens comprises a central bright vision area, a discrete out-of-focus area and an annular out-of-focus area, the annular out-of-focus area of the rear curved surface generates continuous optical out-of-focus stimulation, the discrete out-of-focus area of the front curved surface provides high-strength discrete stimulation, and the discrete out-of-focus area of the front curved surface and the annular out-of-focus area of the rear curved surface are spatially overlapped to form multi-dimensional stimulation. The limitation of nerve adaptability is broken through and the long-term prevention and control effect is maintained. The radial width of the annular defocusing area of the rear curved surface can accurately cover a sensitive view area around the retina, and continuous defocusing intervention on a key area is formed in combination with micro-lens distribution of the discrete defocusing area of the front curved surface. Through synchronous correction of central vision and regulation and control of a peripheral defocus state, too fast growth of an eye axis is inhibited through dual effects, and the myopia prevention and control efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of myopia prevention and control lenses, and particularly to a hyperbolic defocus composite lens and a hyperbolic defocus composite glasses. Background Art

[0002] In recent years, the prevention and control of myopia in teenagers has become a global public health issue. Research shows that the development of myopia is closely related to peripheral hyperopic defocus of the retina. Traditional optical lenses have the following defects:

[0003] 1. Single-focus lenses only correct central vision, cannot interfere with the imaging quality of the peripheral retina, and cannot inhibit the growth of the eye axis;

[0004] 2. Single-sided microlens defocus lenses (such as multi-point annular design) can generate defocus signals, but there is a problem of single regulation dimension. After long-term wearing by patients, the eyeball is easy to adapt to a single defocus signal, resulting in a poor myopia prevention and control effect due to neural adaptation after long-term wearing.

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a hyperbolic defocus composite lens, which solves the technical problem of poor myopia prevention and control effect after long-term wearing of defocus lenses. Summary of the Invention

[0006] (I) Technical Problem to be Solved

[0007] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a hyperbolic defocus composite lens, which solves the technical problem of poor myopia prevention and control effect.

[0008] (II) Technical Solution

[0009] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0010] An embodiment of the present invention provides a hyperbolic defocus composite lens, including a central clear vision area, a discrete defocus area, and an annular defocus area; the central clear vision area is located at the center of the hyperbolic defocus composite lens, and the central clear vision area can focus the light beam on the retina; the discrete defocus area is arranged on the front surface of the hyperbolic defocus composite lens, and the discrete defocus area includes a plurality of spaced annular bands arranged in sequence from the inside to the outside with the central clear vision area as the center, and each annular band includes a plurality of adjacent microlens bodies; the annular defocus area is arranged on the rear surface of the hyperbolic defocus composite lens, and the annular defocus area is concentrically arranged with the central clear vision area as the center. The annular defocus area is an annular structure and the radial width can cover a 10-20° viewing angle area of the retina.

[0011] Preferably, the discrete defocus area includes 8-11 annular zones. The multiple annular zones form a first defocus area and a second defocus area which are arranged in sequence from the inside to the outside. The first defocus area includes 5 annular zones, and the defocus amounts of the microlens bodies in the annular zones of the first defocus area are the same. The defocus amounts of the microlens bodies in the annular zones of the second defocus area are the same. When the diopter of the central fovea area is 0 to -3.00D, the defocus amounts of the microlens bodies in the annular zones of the first defocus area and the second defocus area are the same. When the diopter of the central fovea area is greater than -3.00D, the defocus amount of the microlens body in the first defocus area is less than the defocus amount of the microlens body in the second defocus area.

[0012] Preferably, when the diopter of the central fovea area is 0 to -3.00D, the defocus amounts of the microlens bodies in the annular zones of the first defocus area and the second defocus area are both +3.5D. When the diopter of the central fovea area is greater than -3.00D, the defocus amount of the microlens body in the first defocus area is +3.5D, and the defocus amount of the microlens body in the second defocus area is +4.5D.

[0013] Preferably, the defocus amount of the annular defocus area is +1.5D.

[0014] Preferably, the diameter of the microlens body in the discrete defocus area is 0.5-1.5mm.

[0015] Preferably, the diameter of the central fovea area is 7-11mm.

[0016] Preferably, the distance between two adjacent annular zones is 1-3mm.

[0017] Preferably, the material of the hyperbolic defocus composite lens is acrylic ester.

[0018] The present invention also provides a hyperbolic defocus composite glasses, including the above-mentioned hyperbolic defocus composite lens.

[0019] (III) Beneficial effects

[0020] The beneficial effects of the present invention are:

[0021] The hyperbolic defocus composite lens of the present invention includes a central fovea area, a discrete defocus area and an annular defocus area. The annular defocus area on the rear surface generates continuous optical defocus stimulation, and the discrete defocus area on the front surface provides high-intensity discrete stimulation. The spatial superposition of the discrete defocus area on the front surface and the annular defocus area on the rear surface forms multi-dimensional stimulation, thereby breaking through the neural adaptation limit and maintaining long-term prevention and control effects. The radial width of the annular defocus area on the rear surface can accurately cover the peripheral sensitive visual field area of the retina, and combined with the microlens distribution of the discrete defocus area on the front surface, continuous defocus intervention on the key area is formed. By simultaneously correcting central visual acuity and regulating the peripheral defocus state, the dual effects inhibit the excessive growth of the eye axis and improve the efficiency of myopia prevention and control. Brief description of the drawings

[0022] Figure 1 Front view of the hyperbolic defocus composite lens of the present invention;

[0023] Figure 2 Rear view of the hyperbolic defocus composite lens;

[0024] Figure 3 Cross-sectional view of the hyperbolic defocus composite lens.

[0025]

Explanation of reference numerals

[0026] 1: Central clear vision area;

[0027] 2: Discrete defocus area; 21: First defocus area; 22: Second defocus area; 23: Annulus; 231: Microlens body;

[0028] 3: Annular defocus area. Detailed implementation manners

[0029] For better explaining the present invention and facilitating understanding, the present invention will be described in detail below with reference to the accompanying drawings through specific implementation manners.

[0030] Embodiment 1

[0031] As Figure 1 shown, the embodiment of the present invention provides a hyperbolic defocus composite lens, which includes a central clear vision area 1, a discrete defocus area 2 and an annular defocus area 3. Among them, the central clear vision area 1 is located at the center of the hyperbolic defocus composite lens, and the central clear vision area 1 can focus the light beam on the retina.

[0032] The discrete defocus area 2 is arranged on the front surface of the hyperbolic defocus composite lens. The discrete defocus area 2 includes a plurality of annuli 23 arranged in sequence from the inside to the outside with the central clear vision area 1 as the center. There is a gap between two adjacent annuli 23. The annulus 23 includes a plurality of adjacent microlens bodies 231. The annular defocus area 3 is arranged on the rear surface of the hyperbolic defocus composite lens. The annular defocus area 3 is concentrically arranged with the central clear vision area 1 as the center. The annular defocus area 3 is an annular structure and the radial width can cover the 10-20° visual angle area of the retina. Among them, the 10-20° visual angle area of the retina is the sensitive visual field area.

[0033] For the hyperbolic defocus composite lens of this embodiment, the annular defocus area 3 on the rear surface generates continuous optical defocus stimulation, and the discrete defocus area 2 on the front surface provides high-intensity discrete stimulation. The spatial superposition of the discrete defocus area 2 on the front surface and the annular defocus area 3 on the rear surface forms multi-dimensional stimulation, thereby breaking through the neural adaptation limit and maintaining the long-term prevention and control effect.

[0034] The radial width of the posterior surface annular defocus area 3 can accurately cover the peripheral sensitive visual field area of the retina. The retina's 10°-20° visual angle area is the sensitive visual field area. Combining with the distribution of the microlens bodies 231 in the discrete defocus area 2 of the anterior surface, continuous defocus intervention on the key area is formed. By synchronously correcting central vision and regulating the peripheral defocus state, the dual effects can inhibit the excessive growth of the eye axis and improve the efficiency of myopia prevention and control. The spatial superposition design of the discrete defocus area 2 of the anterior surface and the annular defocus area 3 of the posterior surface, through the synergistic effect of the bi-curved optical structure, while ensuring the clarity of central vision, optimizes the transmission efficiency of peripheral defocus signals.

[0035] In this embodiment, the diameter of the central clear vision area 1 is 7-11 mm, which can focus the light beam on the retina, ensure the correction of central vision, and at the same time limit the defocus signal loss caused by the excessive expansion of the clear vision area. Among them, the anterior surface of the bi-curved defocus composite lens has a first curvature radius, and the posterior surface of the bi-curved defocus composite lens has a second curvature radius. The first curvature radius and the second curvature radius are set so that the light beam passing through the central clear vision area 1 can be focused on the retina. The annular defocus area 3 has a third curvature radius, and the third curvature radius is set to form the required defocus amount for the annular defocus area 3 with the first curvature radius.

[0036] In this embodiment, the discrete defocus area 2 includes 8-11 annular zones 23. The multiple annular zones 23 form a first defocus area 21 and a second defocus area 22 arranged in sequence from the inside out. Among them, the first defocus area 21 includes 5 annular zones 23 close to the central clear vision area 1, and the remaining annular zones 23 in the discrete defocus area 2 are the second defocus area 22. The defocus amount of each microlens body 231 in the first defocus area 21 is the same, and the defocus amount of each microlens body 231 in the second defocus area 22 is the same. When the diopter of the central clear vision area 1 is 0 to -3.00 D, the defocus amount of the microlens bodies 231 in the annular zones 23 of the first defocus area 21 and the second defocus area 22 is the same. When the diopter of the central clear vision area 1 is greater than -3.00 D, the defocus amount of the microlens bodies 231 in the first defocus area 21 is less than the defocus amount of the microlens bodies 231 in the second defocus area 22. In view of the characteristic that the peripheral defocus sensitivity of high-degree patients' retinas decreases, through the differential design of the defocus amounts of the inner and outer rings of the discrete defocus area 2, the intensity of the peripheral defocus signal is enhanced, the defocus signal attenuation caused by eyeball deformation is compensated, and the inhibition efficiency of eye axis growth is increased by 18%-25%. In this embodiment, the defocus amount in the annular zones 23 of the discrete defocus area 2 avoids the discomfort caused by gradient increase during wearing. By only setting two gradients, the wearing comfort can be improved while further increasing the inhibition efficiency of eye axis growth.

[0037] Preferably, when the diopter of the central foveal region 1 is 0 to -3.00 D, the defocus amounts of the first defocus region 21 and the second defocus region 22 are the same, both being +3.5 D; when the diopter of the central foveal region 1 is greater than -3.00 D, the defocus amount of the microlens body 231 in the first defocus region 21 is +3.5 D, and the defocus amount of the microlens body 231 in the second defocus region 22 is +4.5 D. Since patients with low diopters (0 to -3.00 D) have higher retinal sensitivity, using a uniform defocus amount can avoid accommodative spasm caused by excessive stimulation and improve wearing comfort. Since patients with high refractive errors have lower retinal sensitivity, the defocus amount of the outer ring is increased to +4.5 D to compensate for the weakened defocus signal caused by the increased eye axis length in patients with high refractive errors.

[0038] In the actual application process, when the diopter of the central foveal region 1 is -4.00 D, the discrete defocus region 2 can be provided with 10 annular zones 23. The first defocus region 21 includes 5 annular zones 23, and the defocus amount of the microlens body 231 in each annular zone 23 is +3.5 D. The second defocus region 22 includes 5 annular zones 23, and the defocus amount of the microlens body 231 in each annular zone 23 is +4.5 D. Of course, it can also be provided with 8 annular zones 23. The first defocus region 21 includes 5 annular zones 23, and the defocus amount of the microlens body 231 in each annular zone 23 is +3.5 D. The second defocus region 22 includes 3 annular zones 23, and the defocus amount of the microlens body 231 in each annular zone 23 is +4.5 D.

[0039] When the diopter of the central foveal region 1 is -2.00 D, the discrete defocus region 2 can be provided with 9 annular zones 23, and the defocus amount of the microlens body 231 in each annular zone 23 of the first defocus region 21 and the second defocus region 22 is +3.5 D.

[0040] In this embodiment, the defocus amount of the annular defocus region 3 is +1.5 D, forming a defocus ratio of 2.3:1 to 3:1 with the discrete defocus region 2 of +3.5 D / +4.5 D on the front surface. A composite defocus signal is generated by the hyperbolic surface superposition to stimulate the double pathways of peripheral cone cells and rod cells in the retina, so as to regulate the eye axis growth signal efficiency to increase by about 40%. And the defocus amount of the annular defocus region 3 is +1.5 D, which avoids the accommodative lag caused by excessive intervention and ensures the clarity of central vision.

[0041] Preferably, the diameter of the microlens body 231 in the discrete defocus region 2 is 0.5 - 1.5 mm. The distance between two adjacent annular zones 23 is 1 - 3 mm, which avoids the problem of poor comfort during the superposition of the front surface defocus due to too small a gap and the problem of poor defocus effect due to too large a gap.

[0042] In this embodiment, the material of the hyperbolic defocus composite lens is acrylate. The refractive index of the acrylate material is 1.49, the Abbe number is 58, the low dispersion coefficient reduces the retinal imaging blur caused by the color deviation of the defocus signal, the density is 1.1 g / cm3, the lens is thin and light, and the wearing comfort is suitable for the adolescent group.

[0043] Embodiment 2

[0044] This embodiment provides a hyperbolic defocus composite glasses, including the hyperbolic defocus composite lens in Embodiment 1. Since the hyperbolic defocus composite glasses include the hyperbolic defocus composite lens, the annular defocus area 3 on the rear surface generates continuous optical defocus stimulation, and the discrete defocus area 2 on the front surface provides high-intensity discrete stimulation. The spatial superposition of the discrete defocus area 2 on the front surface and the annular defocus area 3 on the rear surface forms multi-dimensional stimulation, thereby breaking through the neural adaptability limit and maintaining the long-term prevention and control effect.

[0045] In the description of the present invention, it should be understood that the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more, unless otherwise specifically defined.

[0046] In the present invention, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0048] In the description of this specification, the descriptions of terms such as "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0049] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A hyperbolic defocused composite lens, characterized in that: It includes central clear vision area, discrete defocus area and annular defocus area; The central clear vision area is located at the center of the hyperbolic defocused composite lens, and the central clear vision area can focus the light beam on the retina; The discrete defocus area is arranged on the front curved surface of the hyperbolic defocus composite lens, and the discrete defocus area includes a plurality of spaced annular zones centered on the central clear vision area and arranged sequentially from the inside to the outside, and each of the annular zones includes a plurality of adjacently arranged microlens bodies; The annular defocusing area is arranged on the rear curved surface of the hyperbolic defocusing composite lens, the annular defocusing area is centered on the central clear vision area and is concentrically arranged, the annular defocusing area is annular in structure and the radial width can cover the 10-20° viewing angle area of ​​the retina.

2. The hyperbolic defocused composite lens according to claim 1, characterized in that: The discrete defocusing area includes 8-11 annular zones, and the plurality of annular zones form a first defocusing area and a second defocusing area arranged sequentially from the inside to the outside, the first defocusing area includes 5 annular zones, the defocusing amounts of the microlens bodies of the annular zones in the first defocusing area are the same, and the defocusing amounts of the microlens bodies of the annular zones in the second defocusing area are the same; When the diopter of the central clear vision area is 0 to -3.00D, the defocus amounts of the microlens bodies of the annular zones in the first defocus area and the second defocus area are the same; When the diopter of the central clear vision area is greater than -3.00D, the defocus amount of the microlens body in the first defocus area is less than the defocus amount of the microlens body in the second defocus area.

3. The hyperbolic defocused composite lens according to claim 2, characterized in that: When the diopter of the central clear vision area is 0 to -3.00D, the defocus amount of the microlens body of the annular zone in the first defocus area and the second defocus area is +3.5D; When the diopter of the central clear vision area is greater than -3.00D, the defocus amount of the microlens body in the first defocus area is +3.5D, and the defocus amount of the microlens body in the second defocus area is +4.5D.

4. The hyperbolic defocused composite lens according to claim 3, characterized in that: The defocus amount of the annular defocus area is +1.5D.

5. The hyperbolic defocused composite lens according to claim 1, characterized in that: The diameter of the microlens body in the discrete defocus area is 0.5-1.5 mm.

6. The hyperbolic defocused composite lens according to claim 1, characterized in that: The diameter of the central clear vision area is 7-11 mm.

7. The hyperbolic defocused composite lens according to claim 1, characterized in that: The distance between two adjacent ring bands is 1-3 mm.

8. The hyperbolic defocused composite lens according to claim 1, characterized in that: The material of the hyperbolic defocused composite lens is acrylic.

9. A hyperbolic defocused composite spectacles, characterized in that: The hyperbolic defocused composite lens comprises the hyperbolic defocused composite lens according to any one of claims 1 to 8.

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