A myopia prevention and control lens with hybrid multifocal microlenses

Abstract

The present invention relates to the technical field of defocus lenses, and particularly to a myopia prevention and control lens with hybrid multi-focal microlenses; it includes a lens body, and the lens body successively includes an intermediate refractive correction area, a peripheral defocus area, and a peripheral lens area from the center outwards; the peripheral defocus area includes a plurality of microlens units, and the plurality of microlens units are arranged in an array to form the peripheral defocus area; each microlens unit includes a plurality of microlenses, and the plurality of microlenses are arranged in an array to form the microlens unit; each microlens unit is divided into n layers in a ring shape from the center microlens outwards, where the position of one microlens at the center of each microlens unit is the first layer, and the additional diopters of the microlenses in each layer of each microlens unit are equal; the additional diopters of the microlenses of each microlens unit from the first layer to the nth layer decrease or increase in sequence. The myopia control effect of the present invention is better, and the compliance of the wearer is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of defocus lenses, and particularly to a myopia prevention and control lens with hybrid multi-focal microlenses. Background Art

[0002] Currently, myopia among teenagers of all ages in China shows a trend of early onset age, rapid progression, and high degree. According to incomplete statistics, the myopia incidence rate among primary school students in China is about 30%, junior high school students about 60%, senior high school students about 80%, and that among college students has reached as high as 90%. With the reduction of outdoor activities, the dependence on electronic products, and the heavy schoolwork burden... With the change of people's lifestyle nowadays, the incidence of myopia is constantly rising. According to the statistical data of the World Health Organization, there are currently about 1.4 billion myopic people globally, nearly half of whom are in China. If effective intervention measures are not taken, it is expected that by 2020, the number of myopic people in China will exceed 700 million, and the number of people with high myopia will reach 40 million - 51.5 million.

[0003] Regarding control, currently, the relatively recommended effective methods for controlling myopia include corneal shaping lenses, that is, OK lenses, as well as low-concentration atropine, light therapy devices, defocus soft lenses, defocus frame glasses, etc. Parents can choose one or several of these methods according to their children's age, myopia degree, acceptance level, and family conditions for application. Among them, defocus lenses can move the focus projected behind the retina to the retina or in front, while correcting the central vision and peripheral vision of the retina, thereby delaying the development of axial length growth and achieving the purpose of delaying myopia growth.

[0004] Peripheral defocus for myopia control is one of the effective ways for myopia control. However, currently, the peripheral defocus lenses on the market either have a constant additional diopter of the microlenses or the additional diopter of the microlenses gradually changes in a circular shape from the inside to the outside (the additional diopter within each ring is the same). Defocus lenses with this design can effectively control myopia to a certain extent. However, due to the adaptation of the human eye after long-term wearing, the later control effect is poor, and it is necessary to continuously update the prescription and the defocus size of the microlenses, resulting in a waste of resources and costs. Summary of the Invention

[0005] The object of the present invention is to provide a myopia prevention and control lens with hybrid multi-focal microlenses to solve the problems related to the design of microlenses in defocus lenses in the prior art, such as the poor later control effect due to the adaptation of the human eye after long-term wearing, and the waste of resources and costs caused by the need to continuously update the prescription and the defocus size of the microlenses.

[0006] The technical solution of the present invention is: a myopia prevention and control lens with hybrid multifocal microlenses, including a lens body, which is sequentially from the center outwards as an intermediate refractive correction area, a peripheral defocus area, and a peripheral lens area;

[0007] The peripheral defocus area includes a number of microlens units, and a number of microlens units are arranged in an array to form the peripheral defocus area; each microlens unit includes a number of microlenses, and a number of microlenses are arranged in an array to form the microlens unit;

[0008] Each microlens unit is divided into n layers in a ring shape from the center microlens outwards, where the position of one microlens at the center of each microlens unit is the first layer; the additional diopters of the microlenses from the first layer to the nth layer of each microlens unit decrease or increase in sequence.

[0009] Preferably, when the additional diopters of the microlenses from the first layer to the nth layer of each microlens unit decrease in sequence; the diopter of the microlens of the first layer is more than 2D greater than the diopter of the intermediate refractive correction area, and the diopter of the microlens of the nth layer is greater than the diopter of the intermediate refractive correction area.

[0010] Preferably, when the additional diopters of the microlenses from the second layer to the nth layer of each microlens unit increase in sequence; the additional diopter of the microlens of the first layer of each microlens unit is equal to 0.

[0011] Preferably, a number of microlenses A with an additional diopter equal to 0 are provided in the microlenses of the nth layer.

[0012] Preferably, a number of microlenses B with an additional diopter equal to 0 are provided in the microlenses of the n - 1th layer.

[0013] Preferably, when the additional diopters of the microlenses from the first layer to the nth layer of each microlens unit decrease in sequence or when the additional diopters of the microlenses from the second layer to the nth layer of each microlens unit increase in sequence, the gradient value M of the increase or decrease of the additional diopter between every two adjacent layers of microlenses is the same, and M is any value among 0.5D, 1.0D, 1.5D, 2.0D, 2.5D, 3.0D, 3.5D, 4.0D, 4.5D, 5.0D.

[0014] Preferably, when the diopter of the intermediate refractive correction area is from -0.25D to -1.00D, the gradient value M of the additional diopter increment or decrement between every two adjacent micro-lenses is the same, and M is equal to 0.5D; when the diopter of the intermediate refractive correction area is from -1.00D to -2.00D, the gradient value M of the additional diopter increment or decrement between every two adjacent micro-lenses is the same, and M is equal to 1.0D; thereafter, for every -1.00D increase in the diopter of the intermediate refractive correction area, the gradient value M of the additional diopter increment or decrement between every two adjacent micro-lenses is the same, and M increases by 0.5D on the basis of the previous M value; when the diopter of the intermediate refractive correction area is greater than -10D, the gradient value M of the additional diopter increment or decrement between every two adjacent micro-lenses is the same, and M is equal to 5D.

[0015] Preferably, a number of microlenses A with an additional diopter equal to 0 are provided at equal intervals in the microlenses of the nth layer, and the total number P of the microlenses A is greater than or equal to one-third of the total number of the microlenses of the nth layer. If the value of P is a decimal, it is rounded up or down to an integer.

[0016] Preferably, a number of microlenses B with an additional diopter equal to 0 are provided at equal intervals in the microlenses of the (n - 1)th layer, and the total number H of the microlenses B is greater than or equal to one-half of the total number of the microlenses of the (n - 1)th layer. If the value of H is a decimal, it is rounded up or down to an integer.

[0017] Preferably, the additional diopter of each of the microlenses is from 0D to +15D;

[0018] The area of the intermediate refractive correction area is equal to the total area of a microlens unit minus the area of the microlenses of its nth layer;

[0019] The maximum width and the minimum width of each of the microlenses are both in the range of 1.0 - 1.8 millimeters.

[0020] Compared with the prior art, the advantages of the present invention are:

[0021] A myopia prevention and control lens with hybrid multi-focus microlenses in the present invention, the peripheral defocus area includes several microlens units, and several microlens units are arranged in an array to form the peripheral defocus area; each microlens unit includes several microlenses, and several microlenses are arranged in an array to form a microlens unit; each microlens unit is divided into n layers in a ring shape from the center microlens to the outside, where the position of one microlens at the center of each microlens unit is the first layer, and the additional diopters of the microlenses in each layer of each microlens unit are equal; the additional diopters of the microlenses in each microlens unit from the first layer to the nth layer decrease or increase in sequence; through this setting method, the myopia prevention and control lens of Embodiment 1 is suitable for users who have just started wearing defocus lenses. The change of defocus amount in each microlens unit is relatively slow, and the range of high additional diopters is small, making it easy for new wearers to adapt as soon as possible; the myopia prevention and control lens in Embodiment 2 is suitable for patients with a relatively fast increase in myopia and a relatively high degree of myopia. Each microlens unit has more large defocus microlenses, and the myopia control effect is better; the myopia prevention and control lens in Embodiment 3 can increase the corrected vision of the peripheral part, improve the corrected vision of the peripheral part, increase the clarity of the wearer's peripheral visual field, and improve the wearer's compliance; the myopia prevention and control lens in Embodiment 4 further increases the corrected vision of the peripheral part, and on the basis of ensuring a large defocus amount and a good myopia control effect, improves the wearer's compliance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the drawings and embodiments:

[0023] Figure 1 It is a structural schematic diagram of a myopia prevention and control lens with hybrid multi-focus microlenses described in Embodiment 1;

[0024] Figure 2 It is a structural schematic diagram of a myopia prevention and control lens with hybrid multi-focus microlenses described in Embodiment 2;

[0025] Figure 3 It is a structural schematic diagram of a myopia prevention and control lens with hybrid multi-focus microlenses described in Embodiment 3;

[0026] Figure 4 It is a structural schematic diagram of a myopia prevention and control lens with hybrid multi-focus microlenses described in Embodiment 4;

[0027] Figure 5 It is a curve graph showing the ADD change situation of the myopia prevention and control lens of Embodiment 1 on the 0° line, 15° line, and 30° line within a 40 mm aperture;

[0028] Figure 6 It is a curve graph showing the ADD change situation of the myopia prevention and control lenses of Embodiment 1, Embodiment 2, Embodiment 3, and Embodiment 4 on the 0° line within a 40 mm aperture;

[0029] Figure 7 Curves showing the ADD variation of the myopia control lenses of Example 1, Example 2, Example 3, and Example 4 respectively on the 15° line within a 40 mm aperture;

[0030] Figure 8 Curves showing the ADD variation of the myopia control lenses of Example 1, Example 2, Example 3, and Example 4 respectively on the 30° line within a 40 mm aperture.

[0031] Wherein: 1. Intermediate refractive correction area, 2. Peripheral defocus area, 3. Peripheral lens area, 21. Microlens unit. Detailed implementation manners

[0032] The following combines specific embodiments to further elaborate on the content of the present invention:

[0033] In the description of the invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the invention.

[0034] A myopia control lens with hybrid multi-focus microlenses, including a lens body. The lens body is successively from the center outwards as an intermediate refractive correction area, a peripheral defocus area, and a peripheral lens area; the peripheral defocus area includes a plurality of microlens units, and the plurality of microlens units are arranged in an array to form the peripheral defocus area; each microlens unit includes a plurality of microlenses, and the plurality of microlenses are arranged in an array to form the microlens unit; each microlens unit is annularly divided into n layers from the inside to the outside with the microlens at the center as the base point, and the position where one microlens at the center of each microlens unit is the first layer; the additional powers of the microlenses of each microlens unit from the first layer to the nth layer decrease or increase successively. In Figures 5 - 8 it, the horizontal axis represents the serial number of the microlenses on the myopia control lens from the inside to the outside, and the vertical axis represents the value of the additional power ADD; as Figure 5As shown, in the prior art, for the peripheral defocus lens (the additional diopter of the microlens remains constant or gradually changes in a circular pattern from the inside to the outside), the change in the additional diopter ADD is the same in all directions of the lens circumference. Therefore, the stimulation to the human eye does not change in the circumferential direction. However, for the myopia prevention and control lens with hybrid multifocal microlenses in the present invention, with microlens units as the constituent units, and several microlens units arranged in an array to form a peripheral defocus area, different changes in the additional diopter ADD are presented in the circumferential direction, which can provide more variable stimulation to the retina, extend the adaptation period of the human eye, and thus prolong the time of myopia control.

[0035] When the additional diopter of the microlenses in each microlens unit decreases successively from the 1st layer to the nth layer; the diopter of the microlens in the 1st layer is more than 2D greater than the diopter of the intermediate refractive correction area, and the diopter of the microlens in the nth layer is greater than the diopter of the intermediate refractive correction area.

[0036] When the additional diopter of the microlenses in each microlens unit increases successively from the 2nd layer to the nth layer; the additional diopter of the microlens in the first layer of each microlens unit is equal to 0. There are several microlenses A with an additional diopter equal to 0 in the microlenses of the nth layer. The several microlenses A with an additional diopter equal to 0 are equally spaced in the microlenses of the nth layer, and the total number P of the microlenses A is greater than or equal to one-third of the total number of the microlenses in the nth layer. If the value of P is a decimal, it is rounded to the nearest integer. Further, there are several microlenses B with an additional diopter equal to 0 in the microlenses of the n - 1st layer. The several microlenses B with an additional diopter equal to 0 are equally spaced in the microlenses of the n - 1st layer, and the total number H of the microlenses B is greater than or equal to one-half of the total number of the microlenses in the n - 1st layer. If the value of H is a decimal, it is rounded to the nearest integer.

[0037] When the additional optical power of the microlenses from the first layer to the nth layer of each microlens unit decreases successively, or when the additional optical power of the microlenses from the second layer to the nth layer of each microlens unit increases successively, the gradient value M of the increase or decrease in the additional optical power between every two adjacent layers of microlenses is the same, and M is any value among 0.5D, 1.0D, 1.5D, 2.0D, 2.5D, 3.0D, 3.5D, 4.0D, 4.5D, 5.0D. Further, when the diopter of the intermediate refractive correction area is from -0.25D to -1.00D, the gradient value M of the increase or decrease in the additional optical power between every two adjacent layers of microlenses is the same, and M is equal to 0.5D; when the diopter of the intermediate refractive correction area is from -1.00D to -2.00D, the gradient value M of the increase or decrease in the additional optical power between every two adjacent layers of microlenses is the same, and M is equal to 1.0D; thereafter, for every -1.00D increase in the diopter of the intermediate refractive correction area, the gradient value M of the increase or decrease in the additional optical power between every two adjacent layers of microlenses is the same, and M increases by 0.5D on the previous M value; when the diopter of the intermediate refractive correction area is greater than -10D, the gradient value M of the increase or decrease in the additional optical power between every two adjacent layers of microlenses is the same, and M is equal to 5D. Further, that is, when the diopter of the intermediate refractive correction area is from -0.25D to -1.00D, the gradient value M of the increase or decrease in the additional optical power between every two adjacent layers of microlenses is the same, and M is equal to 0.5D; when the diopter of the intermediate refractive correction area is from -1.00D to -2.00D, the gradient value M of the increase or decrease in the additional optical power between every two adjacent layers of microlenses is the same, and M is equal to 1.0D; when the diopter of the intermediate refractive correction area is from -2.00D to -3.00D, the gradient value M of the increase or decrease in the additional optical power between every two adjacent layers of microlenses is the same, and M is equal to 1.5D; when the diopter of the intermediate refractive correction area is from -3.00D to -4.00D, the gradient value M of the increase or decrease in the additional optical power between every two adjacent layers of microlenses is the same, and M is equal to 2.0D; when the diopter of the intermediate refractive correction area is from -4.00D to -5.00D, the gradient value M of the increase or decrease in the additional optical power between every two adjacent layers of microlenses is the same, and M is equal to 2.5D; when the diopter of the intermediate refractive correction area is from -5.00D to -6.00D, the gradient value M of the increase or decrease in the additional optical power between every two adjacent layers of microlenses is the same, and M is equal to 3.0D; when the diopter of the intermediate refractive correction area is from -7.00D to -8.00D, the gradient value M of the increase or decrease in the additional optical power between every two adjacent layers of microlenses is the same, and M is equal to 3.5D; when the diopter of the intermediate refractive correction area is from -9.00D to -10.00D, the gradient value M of the increase or decrease in the additional optical power between every two adjacent layers of microlenses is the same, and M is equal to 4.0D; when the diopter of the intermediate refractive correction area is greater than -10D, the gradient value M of the increase or decrease in the additional optical power between every two adjacent layers of microlenses is the same, and M is equal to 5D.

[0038] The additional diopter of each microlens is from 0D to +15D; the area of the intermediate refractive correction zone is equal to the total area of a microlens unit minus the area of the microlenses on its nth layer; both the maximum width and the minimum width of each microlens are in the range of 1.0 - 1.8 mm.

[0039] Example 1

[0040] As Figure 1 shown, a myopia prevention and control lens with hybrid multifocal microlenses includes a lens body. The lens body successively includes an intermediate refractive correction zone, a peripheral defocus zone, and a peripheral lens zone from the center outwards; the peripheral defocus zone includes a number of microlens units, and the number of microlens units are arranged in an array to form the peripheral defocus zone; each microlens unit includes a number of microlenses, and the number of microlenses are arranged in an array to form the microlens unit; further, the number of microlens units are arranged in an array to form a honeycomb-shaped peripheral defocus zone, and the number of microlenses are arranged in an array to form a honeycomb-shaped microlens unit; because it is honeycomb-shaped, the side where every two microlens units are connected shares one microlens; each microlens unit is divided into 4 layers in a ring shape from the center microlens outwards, and the place where one microlens at the center of each microlens unit is located is the 1st layer; the additional diopter of the microlenses of each microlens unit from the 1st layer to the 4th layer decreases successively.

[0041] When the additional diopter of the microlenses of each microlens unit decreases successively from the 1st layer to the 4th layer, the gradient value M of the increase or decrease of the additional diopter between every two adjacent layers of microlenses is the same, and M is any value among 0.5D, 1.0D, 1.5D, 2.0D, 2.5D, 3.0D, 3.5D, 4.0D, 4.5D, 5.0D. Figure 1The micro-lens units are honeycomb-shaped. Those with the same filling pattern belong to the same layer. In this embodiment, the additional diopters of the micro-lenses in the 1st to 4th layers are +2.0D, +1.5D, +1.0D, +0.5D in sequence (i.e., the gradient value M of the decreasing additional diopter between every two adjacent layers of micro-lenses is 0.5D), or the additional diopters of the micro-lenses in the 1st to 4th layers are +2.5D, +2.0D, +1.5D, +0.5D in sequence (i.e., the gradient value M of the decreasing additional diopter between every two adjacent layers of micro-lenses is 0.5D), or the additional diopters of the micro-lenses in the 1st to 4th layers are +5.5D, +4.0D, +2.5D, +1.0D in sequence (i.e., the gradient value M of the decreasing additional diopter between every two adjacent layers of micro-lenses is 1.5D), or the additional diopters of the micro-lenses in the 1st to 4th layers are +4.0D, +3.0D, +2.0D, +1.0D in sequence (i.e., the gradient value M of the decreasing additional diopter between every two adjacent layers of micro-lenses is 1.0D), or the additional diopters of the micro-lenses in the 1st to 4th layers are +8.0D, +6.0D, +4.0D, +2.0D in sequence (i.e., the gradient value M of the decreasing additional diopter between every two adjacent layers of micro-lenses is 2.0D); all satisfy that the additional diopters of the micro-lenses of each micro-lens unit decrease in sequence from the 1st layer to the 4th layer.

[0042] Since the diopters of the intermediate refractive correction areas are all negative, the values of the additional diopters of the micro-lenses in the above 1st to 4th layers satisfy that when the additional diopters of the micro-lenses of each micro-lens unit decrease in sequence from the 1st layer to the 4th layer, the diopter of the micro-lens in the 1st layer is more than 2D greater than the diopter of the intermediate refractive correction area, and the diopter of the micro-lens in the 4th layer is greater than the diopter of the intermediate refractive correction area.

[0043] Since the larger the ADD, the greater the defocus and the worse the visual quality, but the better the myopia control effect; for Example 1, its highest ADD on the 0° line and the 15° line appears on the 4th micro-lens, while the highest ADD on the 30° line appears on the 9th micro-lens. Therefore, Example 1 is suitable for users who have just started wearing defocus lenses. In each control unit group, the change in defocus amount is relatively slow, and the range of high additional diopters is small, making it easy for new wearers to adapt as soon as possible.

[0044] Example 2

[0045] A myopia prevention and control lens with hybrid multifocal microlenses, including a lens body. The lens body sequentially includes an intermediate refractive correction area, a peripheral defocus area, and a peripheral lens area from the center outwards. The peripheral defocus area includes a number of microlens units, and the number of microlens units are arranged in an array to form the peripheral defocus area. Each microlens unit includes a number of microlenses, and the number of microlenses are arranged in an array to form the microlens unit. Further, the number of microlens units are arranged in an array to form a honeycomb-shaped peripheral defocus area, and the number of microlenses are arranged in an array to form a honeycomb-shaped microlens unit. Because it is honeycomb-shaped, the common side of every two connected microlens units shares one microlens. Each microlens unit is annularly divided into 4 layers from the center microlens outwards, where the position of one microlens at the center of each microlens unit is the first layer. The additional diopters of the microlenses of each microlens unit from the first layer to the fourth layer increase sequentially.

[0046] Further, when the additional diopters of the microlenses of each microlens unit from the second layer to the fourth layer increase sequentially; the additional diopter of the microlens of the first layer of each microlens unit is equal to 0. When the additional diopters of the microlenses of each microlens unit from the second layer to the fourth layer increase sequentially, the gradient value M of the increase or decrease of the additional diopter between every two adjacent layers of microlenses is the same, and M is any value among 0.5D, 1.0D, 1.5D, 2.0D, 2.5D, 3.0D, 3.5D, 4.0D, 4.5D, 5.0D. As Figure 2 shown, the microlens units in the figure are honeycomb-shaped, and those with the same filling pattern are in the same layer. In this embodiment, the additional diopters of the microlenses from the second layer to the fourth layer are +1.0D, +1.5D, +2.0D in sequence, that is, the gradient value M of the increase of the additional diopter between every two adjacent layers of microlenses is 0.5D.

[0047] For Embodiment 2, the comprehensive defocus amount is the largest within a 40 mm aperture from the start of defocus (a total of 11 microlenses), and the myopia control effect is the best. This design is suitable for patients with a relatively fast increasing degree of myopia and a relatively high degree of myopia. Each control unit group has more large defocus microlenses, and the myopia control effect is better.

[0048] Embodiment 3

[0049] A myopia prevention and control lens with hybrid multifocal microlenses, comprising a lens body. The lens body successively includes an intermediate refractive correction area, a peripheral defocus area, and a peripheral lens area from the center outwards. The peripheral defocus area includes a number of microlens units, and the number of microlens units are arranged in an array to form the peripheral defocus area. Each microlens unit includes a number of microlenses, and the number of microlenses are arranged in an array to form the microlens unit. Further, the number of microlens units are arranged in an array to form a honeycomb-shaped peripheral defocus area, and the number of microlenses are arranged in an array to form a honeycomb-shaped microlens unit. Because it is honeycomb-shaped, the common side of every two connected microlens units shares one microlens. Each microlens unit is annularly divided into 4 layers from the center microlens as the base point from the inside outwards, where the position of one microlens at the center of each microlens unit is the first layer. The additional diopters of the microlenses of each microlens unit from the first layer to the fourth layer increase successively. The additional diopters of the microlenses of each microlens unit from the first layer to the fourth layer increase successively.

[0050] Further, when the additional diopters of the microlenses of each microlens unit from the second layer to the fourth layer increase successively; the additional diopter of the microlens of the first layer of each microlens unit is equal to 0. When the additional diopters of the microlenses of each microlens unit from the second layer to the fourth layer increase successively, the gradient value M of the increase or decrease of the additional diopter between every two adjacent layers of microlenses is the same, and M is any value among 0.5D, 1.0D, 1.5D, 2.0D, 2.5D, 3.0D, 3.5D, 4.0D, 4.5D, 5.0D. There are a number of microlenses A with an additional diopter equal to 0 in the microlenses of the fourth layer. More preferably, as Figure 3 shown, in the figure, the microlens units are honeycomb-shaped, and those with the same filling pattern are of the same layer. In this embodiment, the additional diopters of the microlenses of the second layer to the fourth layer are +1.5D, +3.0D, +4.0D in sequence, that is, the gradient value M of the increase of the additional diopter between every two adjacent layers of microlenses is 1.5D; there are 6 microlenses A with an additional diopter equal to 0 arranged at equal intervals in the microlenses of the fourth layer, and the total number of microlenses in the fourth layer is 18, that is, the total number 6 of microlenses A is one-third of the total number 18 of the microlenses in the fourth layer.

[0051] For Embodiment 3, it is the same as Embodiment 2 at the 0° line, but the defocus amount at the 15° line and the 30° line is less than that of Embodiment 2, thereby increasing the corrected vision of the peripheral part, improving the corrected vision of the peripheral part, increasing the clarity of the peripheral visual field of the wearer, and improving the compliance of the wearer.

[0052] Embodiment 4

[0053] A myopia prevention and control lens with hybrid multifocal microlenses, comprising a lens body. The lens body sequentially includes a middle refractive correction area, a peripheral defocus area, and a peripheral lens area from the center outwards; the peripheral defocus area includes a plurality of microlens units, and the plurality of microlens units are arranged in an array to form the peripheral defocus area; each microlens unit includes a plurality of microlenses, and the plurality of microlenses are arranged in an array to form the microlens unit; further, the plurality of microlens units are arranged in an array to form a honeycomb-shaped peripheral defocus area, and the plurality of microlenses are arranged in an array to form a honeycomb-shaped microlens unit; because it is honeycomb-shaped, the common side of every two connected microlens units shares one microlens; each microlens unit is divided into 4 layers in a ring shape from the center microlens outwards, where the position of one microlens at the center of each microlens unit is the first layer; the additional diopters of the microlenses of each microlens unit from the first layer to the fourth layer increase sequentially; the additional diopters of the microlenses of each microlens unit from the first layer to the fourth layer increase sequentially.

[0054] Further, when the additional diopters of the microlenses of each microlens unit from the second layer to the fourth layer increase sequentially; the additional diopter of the microlens of the first layer of each microlens unit is equal to 0. When the additional diopters of the microlenses of each microlens unit from the second layer to the fourth layer increase sequentially, the gradient value M of the increase or decrease of the additional diopter between every two adjacent layers of microlenses is the same, and M is any value among 0.5D, 1.0D, 1.5D, 2.0D, 2.5D, 3.0D, 3.5D, 4.0D, 4.5D, 5.0D. Among the microlenses of the fourth layer, there are a plurality of microlenses A with an additional diopter equal to 0, and among the microlenses of the third layer, there are a plurality of microlenses B with an additional diopter equal to 0; more preferably, as Figure 4 shown, in the figure, the microlens units are honeycomb-shaped, and those with the same filling pattern are of the same layer. In this embodiment, the additional diopters of the microlenses of the second layer to the fourth layer are +4.0D, +6.0D, +8.0D in sequence, that is, the gradient value M of the increase of the additional diopter between every two adjacent layers of microlenses is 2.0D; among the microlenses of the fourth layer, 6 microlenses A with an additional diopter equal to 0 are arranged at equal intervals, and among the microlenses of the third layer, 6 microlenses B with an additional diopter equal to 0 are arranged at equal intervals; the total number of microlenses of the fourth layer is 18, that is, the total number 6 of microlenses A is one-third of the total number 18 of the microlenses of the fourth layer; the total number of microlenses of the third layer is 12, that is, the total number 6 of microlenses B is one-third of the total number 12 of the microlenses of the third layer.

[0055] For Example 4, it has a significantly reduced comprehensive defocus amount in all circumferential directions compared to Example 3, and the peripheral emmetropic area is further increased. On the basis of ensuring a large defocus amount and a good myopia control effect, the compliance of the wearer is improved.

[0056] It should be noted that in this embodiment, the microlens can be not only a regular hexagon, but also an inscribed circle of the regular hexagon, a polygon or an irregular figure.

[0057] The above embodiments are only used to illustrate the technical concept and characteristics of the present invention, and the purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the protection scope of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention.

Claims

1. A myopia prevention and control lens with hybrid multifocal microlenses, comprising a lens body, wherein the lens body is sequentially divided into a middle refractive correction area, a peripheral defocus area, and a peripheral lens area from the center outwards; characterized in that: The peripheral defocus area includes a plurality of microlens units, and the plurality of microlens units are arranged in an array to form the peripheral defocus area; each of the microlens units includes a plurality of microlenses, and the plurality of microlenses are arranged in an array to form a honeycomb microlens unit; Each of the microlens units is divided into n layers in a ring shape from the central microlens to the outside, where the position of one microlens at the center of each microlens unit is the first layer; the additional optical powers of the microlenses from the first layer to the nth layer of each microlens unit decrease or increase in sequence, and a plurality of microlenses A with an additional optical power equal to 0 are provided at equal intervals in the nth layer of microlenses, and the total number P of microlenses A is greater than or equal to one-third of the total number of microlenses in the nth layer. If the value of P is a decimal, it is rounded to the nearest integer.

2. The myopia prevention and control lens with hybrid multifocal microlenses according to claim 1, characterized in that: When the additional optical powers of the microlenses from the first layer to the nth layer of each microlens unit decrease in sequence; the diopter of the microlenses in the first layer is more than 2D greater than the diopter of the intermediate refractive correction area, and the diopter of the microlenses in the nth layer is greater than the diopter of the intermediate refractive correction area.

3. The myopia prevention and control lens with hybrid multifocal microlenses according to claim 1, characterized in that: When the additional optical powers of the microlenses from the second layer to the nth layer of each microlens unit increase in sequence; the additional optical power of the microlenses in the first layer of each microlens unit is equal to 0.

4. The myopia prevention and control lens with hybrid multifocal microlenses according to claim 1, characterized in that: A plurality of microlenses B with an additional optical power equal to 0 are provided in the microlenses of the n - 1th layer.

5. The myopia prevention and control lens with hybrid multifocal microlenses according to any one of claims 2 - 4, characterized in that: When the additional optical powers of the microlenses from the first layer to the nth layer of each microlens unit decrease in sequence or when the additional optical powers of the microlenses from the second layer to the nth layer of each microlens unit increase in sequence, the gradient value M of the increase or decrease of the additional optical power between every two adjacent layers of microlenses is the same, and M is any value among 0.5D, 1.0D, 1.5D, 2.0D, 2.5D, 3.0D, 3.5D, 4.0D, 4.5D, 5.0D.

6. The myopia prevention and control lens with hybrid multifocal microlenses according to claim 5, characterized in that: When the diopter of the intermediate refractive correction area is from -0.25D to -1.00D, the gradient value M of the increase or decrease of the additional optical power between every two adjacent layers of microlenses is the same, and M is equal to 0.5D; when the diopter of the intermediate refractive correction area is from -1.00D to -2.00D, the gradient value M of the increase or decrease of the additional optical power between every two adjacent layers of microlenses is the same, and M is equal to 1.0D; thereafter, for every -1.00D increase in the diopter of the intermediate refractive correction area, the gradient value M of the increase or decrease of the additional optical power between every two adjacent layers of microlenses is the same, and M increases by 0.5D on the previous M value; when the diopter of the intermediate refractive correction area is greater than -10D, the gradient value M of the increase or decrease of the additional optical power between every two adjacent layers of microlenses is the same, and M is equal to 5D.

7. The myopia prevention and control lens with hybrid multifocal microlenses according to claim 4, characterized in that: A plurality of microlenses B with an additional optical power equal to 0 are provided at equal intervals in the microlenses of the n - 1th layer, and the total number H of microlenses B is greater than or equal to one-half of the total number of microlenses in the n - 1th layer. If the value of H is a decimal, it is rounded to the nearest integer.

8. The myopia prevention and control lens with hybrid multifocal microlenses according to claim 1, characterized in that: The additional optical power of each microlens is from 0D to +15D; The area of the intermediate refractive correction area is equal to the total area of one microlens unit minus the area of the microlenses in its nth layer; The maximum width and the minimum width of each of the microlenses are both within the range of 1.0 - 1.8 millimeters.

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