Myopia prevention and control lens with peripheral out-of-focus micro lens and glasses

Abstract

The utility model discloses a myopia prevention and control lens and glasses with peripheral defocusing microlenses, and the myopia prevention and control lens with the peripheral defocusing microlenses comprises a conventional optical area which is a lens area except a microlens optical area; the micro-lens optical area is composed of 8-10 concentric rings, a plurality of micro-lenses are distributed on each concentric ring, the micro-lenses are rectangular, and the center lines of the rectangles coincide with straight lines radiated from the circle center of the concentric rings; the micro-lens optical area is divided into a first micro-lens optical area close to the nose side and a second micro-lens optical area close to the temporal area by a straight line which penetrates through the circle center of the concentric ring, and the included angle between the straight line and the horizontal line is not zero; the luminosity of the micro-lens located in the first micro-lens optical area and the luminosity of the micro-lens located in the innermost ring are + 3.5 D, and the luminosity of the micro-lens located in the innermost ring is increased by + 0.5 D outwards every two rings; the luminosity of the microlenses in the innermost circle of the microlenses in the second microlens optical area is + 3.0 D, and the luminosity of the microlenses in the innermost circle is increased by + 0.5 D outwards every two circles. According to the utility model, good visual quality is ensured while a good control effect is achieved.

Description

Technical Field

[0001] The utility model relates to an ophthalmic lens, in particular to a myopia prevention and control lens and glasses with a peripheral defocused microlens. Background Art

[0002] Micro-lens peripheral defocus lenses are a lens design that effectively delays the progression of myopia. Most clinical studies have found that its myopia control efficiency is around 60%. The effect of this design in delaying myopia is affected by many factors: first, the size of the intermediate visual area. The smaller the visual area, the better the control effect, but this will also result in a smaller visual field and a decrease in visual quality, leading to poor compliance with wearing glasses; second, the larger the refractive power of the micro-lens, the better the control effect, but it will also result in a decrease in peripheral vision and visual quality; many lens designs will sacrifice visual quality in exchange for better control effects.

[0003] In addition, most lenses have microlenses with fixed light addition, usually +3.5D-5.5D. However, the human eyeball is not a perfect sphere, especially for children who already have myopia. The eye axis becomes longer and the eyeball changes to an elliptical shape. After fixed light addition, the defocus levels in different parts of the fundus are inconsistent, which affects the control effect.

[0004] Some existing lens designs use a design that increases the amount of light from the center to the periphery to improve the defocus effect. However, when the human eye is looking at close objects, there will be a convergence-accommodation linkage, so a larger amount of light is needed to obtain the same defocus effect. However, this symmetrical design will make the defocus effect obtained by the human eye different when looking at far and near, thus affecting the stability of the defocus effect and the myopia control effect. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems in the above-mentioned technology to a certain extent. To this end, one purpose of the utility model is to provide a myopia prevention and control lens with peripheral defocused microlenses, which is suitable for myopia prevention and control of teenagers.

[0006] To achieve the above-mentioned purpose, an embodiment of the present invention provides a myopia prevention and control lens with a peripheral defocused microlens, comprising a conventional optical zone and a microlens optical zone:

[0007] Conventional optical zone: the area of ​​the lens other than the microlens optical zone;

[0008] Microlens optical zone: It is composed of 8 to 10 concentric rings, each of which is arranged with a number of microlenses. The microlenses are rectangular, and the center line of the rectangle coincides with the straight line radiating from the center of the concentric ring;

[0009] The microlens optical zone is divided into a first microlens optical zone near the nose and a second microlens optical zone near the temporal area by a straight line passing through the center of the concentric rings and having an angle with the horizontal line that is not 0:

[0010] The microlenses in the first microlens optical zone have a power of +3.5D in the innermost circle and increase by +0.5D every two circles outwards.

[0011] The microlenses located in the second microlens optical zone have an innermost circle with a power of +3.0D, and increase by +0.5D every two circles outward.

[0012] According to the myopia prevention and control lens with peripheral defocus microlenses of the embodiment of the utility model, the microlens optical zone adopts an asymmetric design of light addition for the upper and lower fields of view of the nose and temporal fields. The half ring near the nose and the lower half ring in the same ring are more symmetrical with an additional +0.5D of light addition, ensuring that a similar defocus effect can be obtained when looking far or near.

[0013] In addition, the myopia prevention and control lens with peripheral defocused microlenses according to the above embodiment of the utility model may also have the following additional technical features:

[0014] Optionally, the diameter of the area surrounded by the innermost microlenses of the concentric rings is 7-9 mm, and the diameter of the outermost concentric rings is between 40 mm and 50 mm.

[0015] Optionally, the microlens is a square, and the side length of the microlens increases from the inside to the outside: the side length of the microlens on the innermost concentric ring is 1 mm, and the side length of the microlens on the outermost concentric ring is 3 mm; the minimum spacing between adjacent microlenses on the same concentric ring is 1 / 2 of the side length of the microlens; the minimum spacing between microlenses on different concentric rings is 1 / 2 of the side length of the microlens on the inner ring.

[0016] Optionally, center lines of microlenses on any two adjacent concentric rings are not on the same straight line.

[0017] Another purpose of the utility model is to provide a pair of glasses suitable for preventing and controlling myopia in teenagers.

[0018] To achieve the above-mentioned object, another embodiment of the utility model provides a pair of glasses, including lenses, temples and nose pads, wherein the lenses include a conventional optical zone and a microlens optical zone:

[0019] Conventional optical zone: the area of ​​the lens other than the microlens optical zone;

[0020] Microlens optical zone: composed of 8 to 10 concentric rings, each of which is arranged with a number of microlenses, the microlenses are square, and the side lengths of the microlenses increase from the inside to the outside: the side lengths of the microlenses on the innermost concentric ring are 1 mm, and the side lengths of the microlenses on the outermost concentric ring are 3 mm; the minimum spacing between adjacent microlenses on the same concentric ring is 1 / 2 of the side length of the microlenses; the minimum spacing between microlenses on different concentric rings is 1 / 2 of the side length of the microlenses on the inner ring, and the center line of the square coincides with the straight line radiating from the center of the concentric ring;

[0021] The microlens optical zone is divided into a first microlens optical zone near the nose and a second microlens optical zone near the temporal area by a straight line passing through the center of the concentric rings and having an angle with the horizontal line that is not 0:

[0022] The microlenses in the first microlens optical zone have a power of +3.5D in the innermost circle and increase by +0.5D every two circles outwards.

[0023] The microlenses located in the second microlens optical zone have an innermost circle with a power of +3.0D, and increase by +0.5D every two circles outward.

[0024] Optionally, the diameter of the area surrounded by the innermost microlenses of the concentric rings is 7-9 mm, and the diameter of the outermost concentric rings is between 40 mm and 50 mm.

[0025] Optionally, center lines of microlenses on any two adjacent concentric rings are not on the same straight line.

[0026] According to a pair of glasses of an embodiment of the utility model, since the microlens optical zone of the lens adopts an asymmetric design of light addition for the upper and lower fields of view of the nose and temporal fields, the half ring near the nose and the lower half ring in the same ring are more symmetrical with +0.5D of light addition, ensuring that a similar defocus effect can be obtained when looking at far and near. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of microlens distribution according to an embodiment of the utility model;

[0028] Figure 2 A partial enlarged schematic diagram of a microlens according to an embodiment of the utility model;

[0029] Figure 3 The figure is a schematic diagram of the structure of glasses according to another embodiment of the utility model.

[0030] Description of labels:

[0031] Microlens 1

[0032] First microlens optical zone α Second microlens optical zone β

[0033] The innermost concentric ring diameter is D1 and the outermost concentric ring diameter is D2.

[0034] The innermost microlens side length is L1 and the outermost microlens side length is L2

[0035] The minimum spacing between microlenses on the same ring is S1 and the minimum spacing between microlenses on adjacent rings is S2.

[0036] Conventional optical zone 21 and microlens optical zone 22. DETAILED DESCRIPTION

[0037] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0038] Since the microlens optical zone of the utility model adopts an asymmetric design of adding light to the upper and lower fields of view of the nose and temporal fields, the half ring near the nose and the lower half ring in the same ring are more symmetrical and add +0.5D of light, ensuring that similar defocus effects can be obtained when looking at far and near.

[0039] In order to better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0040] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0041] The basic principle of the present invention is the same as that of the existing peripheral defocus glasses, and the ultimate goal is to change the imaging position in the eyeball so that the wearer can see objects clearly while inhibiting the growth of the eye axis and delaying the growth of myopia. Compared with the existing lenses that use a microlens structure to achieve the peripheral defocus effect, the present invention is different in the size change, arrangement method, and diopter change rules of the microlenses, as follows:

[0042] Figure 1 to Figure 2 A myopia prevention and control lens with a peripheral defocused microlens according to an embodiment of the utility model comprises a conventional optical zone and a microlens optical zone:

[0043] Conventional optical zone 21: the lens area other than the microlens optical zone; the diopter of the conventional optical zone may be adjusted differently according to the actual situation of the wearer.

[0044] Microlens optical zone 22: It is composed of 8 to 10 concentric rings, each of which is arranged with a number of microlenses 1. The microlens 1 is rectangular, and the center line of the rectangle coincides with the straight line radiating from the center of the concentric ring. Compared with the existing structure composed of hexagons and circles, the utility model adopts rectangular microlenses. In terms of arrangement, it is obviously different from the honeycomb formed by hexagons, and the ring or other shapes formed by the existing circular microlenses are different in shape, so even if the overall arrangement rules are similar, the final effect is different. The microlens light addition and microlens lens size that increase radially from the center to the periphery are adopted, so that the microlenses with smaller sizes near the center bring more delicate defocus stimulation, and the denser lenses bring stronger control effects, while the smaller light addition ensures better visual quality.

[0045] The microlens optical zone is divided into the first microlens optical zone α near the nose and the second microlens optical zone β near the temporal area by a straight line passing through the center of the concentric rings and having a non-zero angle with the horizontal line:

[0046] The microlenses located in the first microlens optical zone α, the innermost microlens 1 has a power of +3.5D, and increases by +0.5D every two rings outwards;

[0047] The microlenses located in the second microlens optical zone β have a light power of +3.0D in the innermost circle of microlenses 1, which increases by +0.5D every two circles outwards.

[0048] The purpose of adopting the above-mentioned microlens optical zone zoning scheme is to adopt an asymmetric design of light addition for the upper and lower fields of view of the nose and temporal fields. The half ring near the nose and the lower half ring in the same ring are more symmetrical with an additional +0.5D of light addition, ensuring that similar defocus effects can be obtained when looking at distant and near objects.

[0049] Optionally, the diameter D1 of the area surrounded by the innermost concentric ring microlenses 1 is 7-9 mm, which brings good control effect and ensures good visual quality; the diameter D2 of the outermost concentric ring is between 40 mm and 50 mm, and the preferred outermost diameter is 45 mm.

[0050] Optionally, the microlens 1 is a square, and the side length of the microlens 1 increases from the inside to the outside: the side length L1 of the microlens on the innermost concentric ring is 1 mm, and the side length L2 of the microlens on the outermost concentric ring is 3 mm; the distance S1 between adjacent microlenses 1 on the same concentric ring is at least 1 / 2 of the side length of the microlens; the distance S2 between microlenses 1 on different concentric rings is at least 1 / 2 of the side length of the microlens on the inner ring. For specific settings, please refer to the attached drawings.

[0051] Optionally, the center lines of the microlenses 1 on any two adjacent concentric rings are not on the same straight line. According to this feature, the microlens array as a whole finally diffuses outward in a spiral shape or in an irregular manner.

[0052] Figure 3 The glasses according to another embodiment of the present invention include lenses, temples and nose pads. The lenses can be frameless or framed, and the shapes can be different. They have the same structure as existing glasses. In terms of the optical structure of the lenses, they have a conventional optical zone 21 and a microlens optical zone 22. The specific arrangement and use effects can be referred to above and will not be described in detail here.

[0053] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0054] 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.

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms should not be understood as necessarily being directed 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, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0056] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A myopia prevention and control lens with peripheral defocused microlenses, Features: Includes conventional optical zone and microlens optical zone: Conventional optical zone: the area of ​​the lens other than the microlens optical zone; Microlens optical zone: It is composed of 8 to 10 concentric rings, each of which is arranged with a number of microlenses. The microlenses are rectangular, and the center line of the rectangle coincides with the straight line radiating from the center of the concentric ring; The microlens optical zone is divided into a first microlens optical zone near the nose and a second microlens optical zone near the temporal area by a straight line passing through the center of the concentric rings and having an angle with the horizontal line that is not 0: The microlenses in the first microlens optical zone have a power of +3.5D in the innermost circle and increase by +0.5D every two circles outwards. The microlenses located in the second microlens optical zone have an innermost circle with a power of +3.0D, and increase by +0.5D every two circles outward.

2. A myopia prevention and control lens with peripheral defocused microlenses as claimed in claim 1, Features: The diameter of the area enclosed by the innermost microlenses of the concentric rings is 7-9 mm, and the diameter of the outermost concentric rings is between 40 mm and 50 mm.

3. A myopia prevention and control lens with peripheral defocused microlenses as claimed in claim 1, Features: The microlenses are square, and the side lengths of the microlenses increase from the inside to the outside: the side lengths of the microlenses on the innermost concentric ring are 1 mm, and the side lengths of the microlenses on the outermost concentric ring are 3 mm; the minimum spacing between adjacent microlenses on the same concentric ring is 1 / 2 of the side length of the microlens; the minimum spacing between microlenses on different concentric rings is 1 / 2 of the side length of the microlens on the inner ring.

4. The myopia prevention and control lens with peripheral defocused microlenses according to claim 1, Features: The center lines of the microlenses on any two adjacent concentric rings are not on the same straight line.

5. A pair of glasses comprising a lens, a temple and a nose pad, wherein the lens comprises a conventional optical zone and a microlens optical zone: Conventional optical zone: the area of ​​the lens other than the microlens optical zone; Microlens optical zone: composed of 8 to 10 concentric rings, each of which is arranged with a number of microlenses, the microlenses are square, and the side lengths of the microlenses increase from the inside to the outside: the side lengths of the microlenses on the innermost concentric ring are 1 mm, and the side lengths of the microlenses on the outermost concentric ring are 3 mm; the minimum spacing between adjacent microlenses on the same concentric ring is 1 / 2 of the side length of the microlenses; the minimum spacing between microlenses on different concentric rings is 1 / 2 of the side length of the microlenses on the inner ring, and the center line of the square coincides with the straight line radiating from the center of the concentric ring; The microlens optical zone is divided into a first microlens optical zone near the nose and a second microlens optical zone near the temporal area by a straight line passing through the center of the concentric rings and having an angle with the horizontal line that is not 0: The microlenses in the first microlens optical zone have a power of +3.5D in the innermost circle and increase by +0.5D every two circles outwards. The microlenses located in the second microlens optical zone have an innermost circle with a power of +3.0D, and increase by +0.5D every two circles outward.

6. The glasses according to claim 5, Features: The diameter of the area enclosed by the innermost microlenses of the concentric rings is 7-9 mm, and the diameter of the outermost concentric rings is between 40 mm and 50 mm.

7. The glasses according to claim 5, Features: The center lines of the microlenses on any two adjacent concentric rings are not on the same straight line.

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