Ophthalmic lens

Abstract

The embodiment of the invention provides an ophthalmic lens, and the ophthalmic lens comprises a lens body which comprises a central region and an out-of-focus region located around the central region; the microstructure array is located on the defocus area and comprises a plurality of first micro-lenses which surround the central area and are arranged at intervals, and second micro-lenses which are located between at least two first micro-lenses and are connected with the at least two first micro-lenses; wherein one of the first micro lens and the second micro lens is a convex lens, and the other one of the first micro lens and the second micro lens is a concave lens.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of lenses, in particular to an ophthalmic lens. BACKGROUND

[0002] Myopia prevention and control has become urgent. The existing simple and effective method is to wear vision-correcting glasses, i.e. myopia glasses, which focus light rays on the retina. However, for adolescents, the eyeball is in the development period, and after wearing myopia glasses, the optical focus of the peripheral part of the lens falls behind the retina, causing the eye axis to stretch, and thus causing the vision to decline more seriously.

[0003] At present, the existing ordinary spherical, aspherical and other myopia lenses in the prior art do not have the function of preventing myopia deepening. SUMMARY

[0004] The embodiments of the present disclosure provide an ophthalmic lens, comprising:

[0005] A lens body, the lens body comprising a central zone and a defocus zone located around the central zone;

[0006] A microstructure array located on the defocus zone, the microstructure comprising a plurality of first microlenses arranged around the central zone and spaced apart, and a second microlens located between and connected to at least two first microlenses; wherein one of the first microlenses and the second microlens is a convex lens, and the other is a concave lens.

[0007] In some embodiments, the center of the second microlens is located on the line between the center points of the two adjacent first microlenses, and is tangent to the two first microlenses.

[0008] In some embodiments, the second microlens is located between and tangent to the three adjacent first microlenses.

[0009] In some embodiments, the second microlens is located between and tangent to the four adjacent first microlenses.

[0010] In some embodiments, the cross-sectional shape of the second microlens comprises at least one of a circle, an ellipse, a triangle, a quadrilateral, a polygon, and an irregular shape, or a combination thereof.

[0011] In some embodiments, the cross-sectional shape of the first microlens is the same as or different from that of the second microlens.

[0012] In some embodiments, the distance between any point on the edge of the shape formed by the portion where the center of one of the first and second microlenses that is a concave lens intersects the lens body is greater than or equal to the radius of curvature of the concave lens.

[0013] In some embodiments, the ratio of the area occupied by the first microlens on the lens body to the area occupied by the second microlens on the lens body ranges between 0.05 and 20.

[0014] In some embodiments, the ratio of the area occupied by the first and second microlenses on the lens body to the surface area of the lens body ranges between about 30% and 97.5%.

[0015] In some embodiments, the defocus zone comprises at least a first region, and the relationship between the first and second microlenses in the first region comprises at least two of the following relationships:

[0016] The second microlens is located between two adjacent first microlenses and is tangent to the two first microlenses.

[0017] The second microlens is located between three adjacent first microlenses and is tangent to the three first microlenses.

[0018] The second microlens is located between four adjacent first microlenses and is tangent to the four first microlenses.

[0019] In some embodiments, the pattern formed by the first and second microlenses on different regions of the defocus zone contains the same information.

[0020] In some embodiments, the pattern formed by the first and second microlenses on at least some different regions of the defocus zone contains different information.

[0021] In some embodiments, the lens further comprises a connecting structure, and the connection between at least two first and second microlenses is achieved through the connecting structure.

[0022] In some embodiments, the first microlenses are arranged in a plurality of concentric circular rings in the defocus zone, and the centers of the plurality of concentric circular rings are located at the center of the lens.

[0023] or,

[0024] The first microlens arrangement is two groups of arc lines arranged in a symmetrical circular arc array, the arc line is determined by three points, the first point is located at the intersection of the center prescription area and the vertical axis of the lens, the second point is located at the intersection of the edge of the lens and the horizontal axis of the lens, and the third point is the center point of the arc line.

[0025] Alternatively, the central area is in the shape of a shell, and the first microlenses are arranged in a plurality of shell shapes in the defocus area.

[0026] The ophthalmic lens provided by the embodiments of the present disclosure comprises: a lens body, the lens body comprises a central area and a defocus area located around the central area; a microstructure array located on the defocus area, the microstructure comprises a plurality of first microlenses arranged around the central area and spaced apart, and a second microlens located between at least two first microlenses and connected with at least two first microlenses; wherein one of the first microlens and the second microlens is a convex lens, and the other is a concave lens. In the embodiments of the present disclosure, the microstructure arranged on the defocus area contains two kinds of microlenses, which are the first microlens and the second microlens, respectively, wherein the second microlens is located between the first microlenses arranged around the central area, and is connected with at least two first microlenses, so that the microstructure array arranged on the defocus area can present an overall shape similar to dense arrangement, which can effectively increase the area occupied by the microstructure array arranged on the defocus area in the defocus area. Compared with the case where no second microlens is arranged, the ophthalmic lens provided by the embodiments of the present disclosure can have a higher inhibitory effect on the axial elongation of myopic patients or the axial shortening of hyperopic patients, and can effectively delay the speed of increasing visual acuity. At the same time, in the embodiments of the present disclosure, one of the first microlens and the second microlens is a convex lens, and the other is a concave lens, and the two types are arranged alternately, so that the person wearing glasses can have better wearing comfort while obtaining good myopia or hyperopia inhibition effect when using the ophthalmic lens provided by the embodiments of the present disclosure.

[0027] The details of one or more embodiments of the present disclosure are presented in the following drawings and description. Other features and advantages of the present disclosure will become apparent from the description and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0029] Figure 1 The structure schematic diagram of the ophthalmic lens provided by the embodiments of the present disclosure;

[0030] Figure 2 This is a schematic diagram of the structure of another ophthalmic lens provided in an embodiment of the present disclosure;

[0031] Figure 3a and Figure 3b For along Figure 1 A schematic diagram of the partial structure of an ophthalmic lens taken along the B1-B2 direction;

[0032] Figure 4 This is a schematic diagram of the structure of the first microlens provided in an embodiment of the present disclosure;

[0033] Figure 5 This is a schematic diagram of the structure of the second microlens provided in an embodiment of the present disclosure;

[0034] Figure 6 A partial structural schematic diagram showing the arrangement of the first and second microlenses in different embodiments of this disclosure;

[0035] Figure 7 A schematic diagram of the arrangement of a first microlens provided in an embodiment of this disclosure;

[0036] Figure 8 A schematic diagram of another arrangement of the first microlenses provided in an embodiment of this disclosure;

[0037] Figure 9 This is a structural schematic diagram of another arrangement of the first microlenses provided in an embodiment of the present disclosure. Detailed Implementation

[0038] It should be noted that, unless otherwise specified, the embodiments and technical features in the embodiments of this disclosure can be combined with each other, and the detailed descriptions in the specific embodiments should be understood as explanations of the purpose of this disclosure and should not be regarded as undue limitations on this disclosure.

[0039] Most myopia control lenses currently employ microlens defocusing technology, which involves placing several positive microlenses with a diameter of millimeters around the periphery of the lens's visual area. Literature indicates that the larger the lens area corresponding to the microstructures in the myopia defocusing region, the more significant the inhibition of corneal axial elongation. However, some existing ophthalmic lenses still exhibit relatively small lens areas corresponding to the microstructures in the myopia defocusing region.

[0040] Based on this, the following technical solutions are proposed for embodiments of this disclosure:

[0041] This disclosure provides an ophthalmic lens, including:

[0042] A lens body, the lens body comprising a central region and a defocusing region surrounding the central region;

[0043] A microstructure array located on the defocus region, the microstructure comprising a plurality of first microlenses arranged around the central region and spaced apart, and a second microlens located between and connected with at least two first microlenses; wherein one of the first microlenses and the second microlens is a convex lens, and the other is a concave lens.

[0044] In the embodiments of the present disclosure, the microstructure arranged on the defocus region comprises two types of microlenses, i.e., first microlenses and second microlenses. The second microlenses are arranged between the first microlenses arranged around the central region and connected with at least two first microlenses, so that the microstructure array arranged on the defocus region can present an overall shape similar to dense arrangement, which can effectively increase the area occupied by the microstructure array arranged on the defocus region. Compared with the case without the second microlenses, the ophthalmic lens provided in the embodiments of the present disclosure can have a higher inhibitory effect on the axial elongation of myopic patients or the axial shortening of hyperopic patients, and can effectively delay the speed of increasing visual acuity. At the same time, in the embodiments of the present disclosure, one of the first microlenses and the second microlenses is a convex lens, and the other is a concave lens. The alternating arrangement of the two types can make the wearer have better wearing comfort while obtaining good myopia or hyperopia inhibition effect when using the ophthalmic lens provided in the embodiments of the present disclosure.

[0045] In order to make the above-mentioned objects, features and advantages of the present disclosure more obvious and easy to understand, the specific embodiments of the present disclosure will be described in detail below in combination with the drawings. In the detailed description of the embodiments of the present disclosure, the schematic diagrams will be partially enlarged without the general proportion for the convenience of description, and the schematic diagrams are only examples which should not limit the protection scope of the present disclosure.

[0046] Figure 1 A structural schematic diagram of an ophthalmic lens provided in an embodiment of the present disclosure; Figure 2 A structural schematic diagram of another ophthalmic lens provided in an embodiment of the present disclosure; Figure 3a And Figure 3b A partial structural schematic diagram of the first microlenses and the second microlenses arranged in different embodiments of the present disclosure; Figure 1 A partial structural schematic diagram of an ophthalmic lens taken along the B1-B2 direction of the ophthalmic lens; Figure 4 A structural schematic diagram of a first microlens provided in an embodiment of the present disclosure; Figure 5 A structural schematic diagram of a second microlens provided in an embodiment of the present disclosure; Figure 6 A partial structural schematic diagram of the first microlenses and the second microlenses arranged in different embodiments of the present disclosure; Figure 7 A structural schematic diagram of an arrangement mode of a first microlens provided in an embodiment of the present disclosure;

[0047] Figure 8Another structural schematic diagram of the arrangement of the first microlens provided by the embodiment of the present disclosure is shown in FIG. 3B. Figure 9 Another structural schematic diagram of the arrangement of the first microlens provided by the embodiment of the present disclosure is shown in FIG. 3B.

[0048] The ophthalmic lens provided by the embodiment of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0049] As shown in FIGS. 1A and 1B, Figure 1 Figure 2 Figure 6 The ophthalmic lens includes: a lens body 10, the lens body 10 including a central zone A1 and a defocus zone A2 located around the central zone; an array of microstructures C located on the defocus zone A2, the microstructure C including a plurality of first microlenses 11 arranged at intervals around the central zone A1, and a second microlens 12 located between and connected to at least two first microlenses 11; wherein one of the first microlens 11 and the second microlens 12 is a convex lens, and the other is a concave lens.

[0050] The lens provided by the embodiment of the present disclosure can be used as a lens for inhibiting the development of myopia or hyperopia.

[0051] In some embodiments, the ophthalmic lens can be a spectacle lens or a contact lens (e.g., a soft contact lens), and the lens can include a spherical lens or an aspherical lens. The material of the lens includes a resin material or an optical glass material.

[0052] Here, the central zone A1 can be understood as the area of the lens for correcting vision, and the refractive power of the central zone A1 is the refractive power of the prescription adopted by the lens for correcting vision.

[0053] In some embodiments, the defocus zone A2 can include the area of the lens other than the central zone A1. However, it is not limited thereto, and in other embodiments, the lens can also include an edge zone (not shown in the figure), and the defocus zone A2 is located between the central zone A1 and the edge zone (not shown in the figure).

[0054] In some embodiments, when the lens contains an edge zone (not shown in the figure), the edge zone (not shown in the figure) can include any desired pattern structure, or the edge zone (not shown in the figure) can also not include a pattern structure, which can be determined according to actual needs, and is not specifically limited herein.

[0055] In some embodiments, the first microlens 11 is a convex lens, and the second microlens 12 is a concave lens. However, it is not limited thereto, and in other embodiments, the first microlens 11 can also be a concave lens, and the second microlens 12 is a convex lens.

[0056] Figure 3a The microstructure C in the myopic lens is shown in FIG. 2A.​​Figure 1 The image shows a detailed sectional view taken along the B1-B2 direction when the lens is in different positions. Figure 3b This indicates that microstructure C in farsighted lenses is located at... Figure 1 The image shows detailed sectional views taken along the B1-B2 direction at different positions of the lens. It should be noted that... Figure 3a and Figure 3b The shapes and curvatures of the lenses shown are merely examples of possible implementations and are not the only limitations of the application scenarios of this disclosure. In actual operation, the shapes and curvatures of the lenses can be flexibly set according to the actual situation, and no specific limitations are made here.

[0057] In some embodiments, such as Figure 3a and Figure 3b As shown in Figure (1), microstructure C can be located on the front surface of the lens.

[0058] However, this is not the only embodiment. In some other embodiments, the microstructure C may also be disposed on the rear surface of the lens; wherein the front surface is the surface of the lens away from the human eye during normal wear, and the rear surface is the surface of the lens close to the human eye during normal wear.

[0059] In other embodiments, such as Figure 3a and Figure 3b As shown in Figures (2) and (3), the microstructure C can also be located on the bonding surface between two lens materials: the first lens material 101 and the second lens material 102; wherein, during the use of the lens, the first lens material 101 is located on the side away from the human eye, and the second lens material 102 is located on the side closer to the human eye.

[0060] In practice, whether the first microlens 11 or the second microlens 12 is a convex or concave lens can be determined based on the position of the microstructure C on the lens, whether the defocus area A2 needs to achieve myopia defocus or hyperopia defocus, etc. The specific choice can be made according to the actual situation, and no specific limitation is made here.

[0061] In some embodiments, when the defocus area needs to achieve a myopia defocus effect, the microstructure C can be set up in the following way:

[0062] In some embodiments, such as Figure 3a As shown in Figure (1), when the microstructure C is located on the front surface of the lens, the first microlens 11 is a convex lens and the second microlens 12 is a concave lens; while when the microstructure C is located on the rear surface of the lens (not shown in the figure), the first microlens 11 is still a convex lens protruding from the lens body 10, and the second microlens 12 is a concave lens recessed towards the lens body.

[0063] In actual operation, the radius of curvature of either the first microlens 11 or the second microlens 12 can be determined according to the refractive index of the two lens materials and information such as the designed diopter, the lens design surface bending, etc.

[0064] In some embodiments, in the embodiments where the microstructure C is located on the bonding surface between the two lens materials, the two lens materials have different refractive indices. When the lens is used to achieve myopia correction and the first microlens is a convex lens and the second microlens is a concave lens, the convex of the first microlens 11 can be directed towards the lens material with low refractive index, and the concave of the second microlens can be directed towards the lens material with high refractive index. For example:

[0065] In some embodiments, as shown in (2) of FIG. 1 in the specification, Figure 3a n1 is the refractive index of the first lens material 101, and n2 is the refractive index of the second lens material 102. When n1 < n2, the first microlens 11 and the second microlens 12 are arranged on the surface of the second lens material 102 close to the first lens material 101, i.e., on the bonding surface between the two, the convex of the first microlens 11 is directed towards the first lens material 101, and the concave of the second microlens 12 is directed towards the second lens material 102;

[0066] In other embodiments, as shown in (3) of FIG. 1 in the specification, Figure 3a when n1 > n2, the first microlens 11 and the second microlens 12 are arranged on the surface of the first lens material 101 close to the second lens material 102, i.e., on the bonding surface between the two, the convex of the first microlens 11 is directed towards the second lens material 102, and the concave of the second microlens 12 is directed towards the first lens material 101.

[0067] In some embodiments, the occupied area of the first microlens 11 on the defocus area A1 can be greater than the occupied area of the second microlens on the defocus area.

[0068] In some specific embodiments, when the cross section of the first microlens 11 and the second microlens 12 is circular, the radius of curvature of the first microlens 11 can be greater than the radius of curvature of the second microlens 12.

[0069] Thus, in this embodiment, the microstructure disposed in the defocus area includes two types of microlenses. The second microlens is located between the first microlenses arranged around the central area and is connected to at least two of the first microlenses. This allows the microstructure array in the defocus area to present an almost densely arranged overall form, effectively increasing the area occupied by the microstructure array in the defocus area. Compared to the case without a second microlens, the ophthalmic lens provided in this embodiment has a higher inhibitory effect on the axial elongation of myopic patients and can effectively slow down the rate of myopia progression. Meanwhile, in this embodiment, since one of the first and second microlenses is a convex lens and the other a concave lens, the alternating arrangement of these two types allows eyeglass wearers to achieve both good myopia suppression and good wearing comfort when using the ophthalmic lens provided in this embodiment.

[0070] In other embodiments, when the defocus area needs to achieve a telescopic defocus effect, the microstructure C can be configured in the following way:

[0071] In some embodiments, such as Figure 3b As shown in Figure (1), when the microstructure C is located on the front surface of the lens, the first microlens 11 is a concave lens and the second microlens 12 is a convex lens; while when the microstructure C is located on the rear surface of the lens (not shown in the figure), the first microlens 11 is still a concave lens that is recessed toward the lens body 10, and the second microlens 12 is a convex lens that protrudes out of the lens body 10.

[0072] In practice, the radius of curvature of either the first microlens 11 or the second microlens 12 can be determined based on the refractive index of the two lens materials, the designed diopter, the lens design surface curvature, and other information.

[0073] In some embodiments where the microstructure C is located at the bonding surface between two lens materials, the two lens materials have different refractive indices. When the lens is used to achieve hyperopia correction and the first microlens is a concave lens and the second microlens is a convex lens, the concavity of the first microlens 11 can face the lens material with a higher refractive index, and the convexity of the second microlens 12 can face the material with a lower refractive index. For example:

[0074] In some embodiments, such as Figure 3bAs shown in Figure (2), n1 is the refractive index of the first lens material 101, and n2 is the refractive index of the second lens material 102. When n1 < n2, the first microlens 11 and the second microlens 12 are disposed on the surface of the second lens material 102 near the first lens material 101, that is, on the bonding surface of the two. The concave arc surface of the first microlens 11 faces the second lens material 102, and the convex arc surface of the second microlens 12 faces the first lens material 101.

[0075] In other embodiments, such as Figure 3b As shown in Figure (3), when n1 > n2, the first microlens 11 and the second microlens 12 are disposed on the surface of the first lens material 101 near the second lens material 102, that is, on the joint surface of the two. The arc surface of the first microlens 11 is concave towards the first lens material 101, and the arc surface of the second microlens 11 is convex towards the second lens material 102.

[0076] In some embodiments, the area occupied by the first microlens 11 in the defocus region A1 can be greater than the area occupied by the second microlens in the defocus region.

[0077] In some specific embodiments, when the cross-sections of the first microlens 11 and the second microlens 12 are both circular, the radius of curvature of the first microlens 11 can be greater than the radius of curvature of the second microlens 12.

[0078] Thus, in this embodiment, the microstructure disposed in the defocus area includes two types of microlenses. The second microlens is located between the first microlenses arranged around the central area and is connected to at least two of the first microlenses. This allows the microstructure array in the defocus area to present an approximately densely arranged overall form, effectively increasing the area occupied by the microstructure array in the defocus area. Compared to the case without a second microlens, the ophthalmic lens provided in this embodiment has a higher inhibitory effect on axial shortening in hyperopic patients and can effectively slow down the rate of increase in hyperopia. Simultaneously, in this embodiment, since one of the first and second microlenses is a convex lens and the other a concave lens, the alternating arrangement of these two types allows eyeglass wearers to achieve both good myopia suppression and good wearing comfort when using the ophthalmic lens provided in this embodiment.

[0079] It can be understood that in the lens, increasing the defocus area is a feasible way to improve the control effect. The theory shows that "there is no statistical difference between myopia defocus and hyperopia defocus in the effect of myopia control in teenagers", so in the embodiments of the present disclosure, no matter whether the concave lens is arranged in the embodiment for obtaining the myopia defocus effect or the convex lens is arranged in the embodiment for obtaining the hyperopia defocus effect, the arrangement of the microstructure C on the defocus area will not weaken the defocus effect of each itself, on the contrary, it can effectively improve the inhibition ability of the eye axis growth or shortening of the lens wearer, and delay the increase of visual acuity.

[0080] In some embodiments, the shape of the central area A1 can include but is not limited to a circle, an ellipse, a regular hexagon, a shell shape, etc.

[0081] In some embodiments, the first microlens 11 is arranged in the defocus area A2 in a plurality of concentric circular rings, and the centers of the plurality of concentric circular rings are located at the center of the lens (for details, please refer to Figure 7 );

[0082] Or,

[0083] The first microlens A1 is arranged in two groups of arc lines L in a symmetrical circular arc array distribution, the arc line L is determined by three points, the first point a is located at the intersection of the central prescription area and the vertical axis of the lens, the second point b is located at the intersection of the edge of the lens and the horizontal axis of the lens, and the third point is the center point c of the arc line (for details, please refer to Figure 9 )。

[0084] Or,

[0085] The central area A1 is in the shape of a shell, and the first microlens 11 is arranged in a plurality of shell shapes in the defocus area A2 (for details, please refer to Figure 8 )。

[0086] But not limited to this, the arrangement of the first microlens 11 on the defocus area A2 can also be other suitable arbitrary ways, which are not limited here.

[0087] In some embodiments, a plurality of first microlenses 11 arranged around the central area A1 along a certain trajectory can be referred to as a group of first microlenses 11, for example:

[0088] When the arrangement of the plurality of first microlenses A1 is in a plurality of circular ring shapes, the plurality of first microlenses located on the same circular ring are referred to as a group of first microlenses;

[0089] When the arrangement of the plurality of first microlenses A1 is in a circular arc array distribution, the plurality of first microlenses located on the same circular arc are referred to as a group of first microlenses;

[0090] Or,

[0091] When the central region A1 is a shell shape, the arrangement track of the plurality of first microlenses 11 arranged around the central region can follow the shell shape of the central region to arrange a plurality of shell-shaped array structures, and the plurality of first microlenses 11 located on the same shell shape are referred to as a group of first microlenses.

[0092] It should be noted that in the embodiments of the present disclosure, the shape of a group of first microlenses 11 can change with the change of the shape of the central region, but is not limited thereto, and can also change with the change of the arrangement mode of the first microlenses 11 on the defocus region A2. The specific definition of a group of first microlenses 11 can be selected according to actual conditions and is not specifically limited here.

[0093] In some embodiments, as shown in FIGS. 1A and 1B, the cross-sectional shape of the first microlens 11 and the second microlens 12 includes at least one of a circular shape, an elliptical shape, a triangular shape, a quadrilateral shape, a polygonal shape, and an irregular shape, or a combination thereof. Figure 4 and Figure 5 As shown in FIGS. 1A and 1B, the cross-sectional shape of the first microlens 11 and the second microlens 12 includes at least one of a circular shape, an elliptical shape, a triangular shape, a quadrilateral shape, a polygonal shape, and an irregular shape, or a combination thereof.

[0094] In some embodiments, the cross-sectional shape of the first microlens 11 and the second microlens 12 is the same or different.

[0095] The first microlens 11 and the second microlens 12 provided by the embodiments of the present disclosure can have multiple shapes, so that the shape selection of each of the two on the defocus region A2 and the combination mode of the two can have multiple modes for selection, which is helpful for the defocus region contained in the finally obtained lens to have different pattern structures and achieve different effects, and also provides favorable conditions for the producer to select different defocus region A2 patterns in the preparation process of the lens according to the different process equipment and process conditions.

[0096] In some embodiments, when the cross section of the first microlens 11 is circular, the diameter thereof is between 0.6 mm and 1.8 mm (including the end point value), for example, 0.8 mm, 1.0 mm, 1.2 mm, 1.4 mm, 1.6 mm, 1.8 mm, etc. The center distance between the first microlenses 11 is in the range of 1.0 mm to 2.5 mm (including the end point value), for example, 1.2 mm, 1.4 mm, 1.6 mm, 1.8 mm, 2 mm, 2.2 mm, 2.4 mm, etc.

[0097] In the embodiments of the present disclosure, the number of first microlenses 11 between which the second microlens 12 is arranged, the position at which the second microlens 12 is arranged between the same number of first microlenses 11, and the like can include multiple conditions, which will be further described in detail below in combination with the drawings.

[0098] In some embodiments, as shown in (1) of FIG. 1, (7) of FIG. 7, (8) of FIG. 8, and (9) of FIG. 9 in Figure 1 , Figure 6 , the second microlens 12 is located between two adjacent first microlenses 11.

[0099] In some embodiments, when the arrangement of the first microlenses 11 in the defocus region A2 is in the shape of multiple circular rings, the positional relationship between the second microlens 12 and the first microlenses 11 can include multiple cases, in which:

[0100] In some embodiments, the center point of the second microlens 12 can be located on the circular ring on which the multiple first microlenses 11 in the same group arranged around the central region and located on the same circular ring are located.

[0101] In other embodiments, the center point of the second microlens 12 is located on the side of the circular ring on which the multiple first microlenses 11 in the same group arranged around the central region and located on the same circular ring are located, away from the central region.

[0102] In yet other embodiments, the center point of the second microlens 12 is located on the side of the circular ring on which the multiple first microlenses 11 in the same group arranged around the central region and located on the same circular ring are located, close to the central region.

[0103] In still other embodiments, as shown in (9) of FIG. 9 in Figure 6 , the center point of the second microlens 12 can include both cases: located on the side of the circular ring on which the multiple first microlenses 11 in the same group arranged around the central region and located on the same circular ring are located, close to the central region, and located on the side of the circular ring on which the multiple first microlenses 11 in the same group arranged around the central region and located on the same circular ring are located, away from the central region.

[0104] In some other embodiments, as shown in (7) of FIG. 7 in Figure 6 , one second microlens 12 is arranged between one first microlens 11 in the first group of first microlenses R1 and one first microlens 11 in the second group of first microlenses R2, i.e., the second microlens 12 is arranged between two first microlenses 11 in different groups.

[0105] In other embodiments, as shown in (8) of FIG. 8 in Figure 6 , this embodiment combines the embodiment of arranging one second microlens 12 between two adjacent first microlenses 11 in the same group and the embodiment of arranging one second microlens 12 between two adjacent first microlenses 11 in two adjacent groups, to provide more arrangement modes of the microstructure C.

[0106] In the above embodiments, where the center point of the second microlens 12 is located on the side of the annulus where the plurality of first microlenses 11 are located, close to the central region, and where the plurality of first microlenses 11 are located in the same group arranged around the central region and on the same annulus, as in the embodiments described above. Figure 6 As shown in Figure (1), the center of the second microlens 12 can be located on the line connecting the center points of two adjacent first microlenses 11, and is tangent to the two first microlenses 11.

[0107] At this time, the diameter Φ2 of the second microlens 12 is equal to the distance L between the centers of two adjacent first microlenses 11 minus the diameter Φ1 of a single first microlens; Φ2 = L - Φ1.

[0108] exist Figure 6 In the embodiment shown in Figure (1), where the center of the second microlens 12 can be located on the line connecting the center points of two adjacent first microlenses 11, the diameter of the second microlens can be calculated intuitively. This helps the operator to design the lens or calculate the ratio of the area occupied by the microstructure C in the defocus area more quickly, thus improving design or calculation efficiency.

[0109] In embodiments where the center point of the second microlens 12 is located on the side of the annulus where the multiple first microlenses 11 are situated, near or far from the central region, the center point of the second microlens 12 is not necessarily limited to the location of the aforementioned annulus. Figure 6 Compared to the embodiment shown in Figure (1), the second microlens 12 in this embodiment can obtain a larger diameter, which helps to increase the area occupied by the microstructure C in the defocus area A2, obtain a good defocus effect, and delay the increase of visual acuity.

[0110] It should be noted that in the embodiment where the second microlens 12 is located between two first microlenses 11, the circular arrangement of the first microlenses 11 is merely an illustrative example. In fact, when the first microlenses 11 are arranged on a symmetrical arc, or on a shell-shaped curve trajectory, or even in any other arrangement, the position of the second microlens 12 can be set with reference to the above. For example, the center point of the second microlens 12 can be located on an arc, a shell curve, or a curve trajectory of other arrangements, but it is not limited to this. It can also be located on at least one side of the arc, shell curve, or curve trajectory of other arrangements. The specific choice can be made according to the actual situation, and no specific limitation is made here.

[0111] In some embodiments, such as Figure 6As shown in Figure (3), the second microlens 12 is located between three adjacent first microlenses 11 and is tangent to the three first microlenses 11.

[0112] In some embodiments, such as Figure 6 As shown in Figure (4), the second microlens 12 is located between four adjacent first microlenses 11 and is tangent to the four first microlenses 11.

[0113] In this embodiment, the center point of the second microlens 12 is located within the pattern formed by the lines connecting the center points of the four adjacent first microlenses 11.

[0114] In some specific embodiments, the line connecting the center points of the four adjacent first microlenses 11 located around the second microlens 12 forms a square. In this case, the center point of the second microlens 12 is located at the intersection of the two diagonals of the square.

[0115] In some embodiments, the number of first microlenses 11 located around and adjacent to the second microlens 12, tangentially to it, may include any other suitable number besides those described above. For example, the number of first microlenses 11 may be 5, 6, 7, 8, 9, 10, a dozen or even more.

[0116] It is understood that in any of the above embodiments, the area occupied by the first microlens 11 and the second microlens 12 in the defocus region A2 can be effectively increased, and the resulting microstructure array can more closely approximate a densely arranged overall shape. Compared with the case where the second microlens is not provided, the ophthalmic lens provided by the present disclosure embodiment can have a higher inhibitory effect on the elongation or shortening of the axial length of myopic or hyperopic patients, and can effectively slow down the rate of increase in visual acuity.

[0117] Besides the arrangement of the first microlens 11 and the second microlens 12 as described above, they can also be arranged in other ways, for example:

[0118] In some embodiments, such as Figure 6 As shown in Figure (2), multiple second microlenses 12 can be set between two adjacent groups of four first microlenses 11 arranged around the central area. Among them, the first microlens 111 and the first second microlens 112 of the four first microlenses 11 are located on one of the groups of first microlenses 11 arranged around the central area, and the first third microlens 113 and the first fourth microlens 114 are located on another group of first microlenses 11 arranged around the central area.

[0119] exist Figure 6In the embodiment shown in Figure (2), the second microlens 12 includes a second first microlens 121 and a second second microlens 122. A second first microlens 121 is provided between the first first microlens 111 and the first second microlens 112, between the first second microlens 112 and the first third microlens 113, between the first third microlens 113 and the first fourth microlens 114, and between the first fourth microlens 114 and the first first microlens 111. A second second microlens 122 is provided between the four second first microlenses 121.

[0120] In this way, the area occupied by the first microlens 11 and the second microlens 12 in the defocus area A2 is effectively increased. Compared with other embodiments, the microstructure array formed by this embodiment can more closely approximate a densely arranged overall shape. The ophthalmic lens provided by this embodiment can have a higher degree of inhibitory effect on the elongation or shortening of the axial length of myopic or hyperopic patients, and can further delay the rate of increase in visual acuity.

[0121] In an embodiment where the second microlens 12 is located among the four first microlenses 11 ( Figure 6 Based on Figure (4) in the middle, further, such as Figure 6 As shown in Figure (5), the second microlens 12 also includes a second and third microlens 123. The second and third microlens 123 fills the area enclosed by the adjacent second microlenses 12 and the first microlenses 11 located on both sides of the line connecting the centers of the two adjacent second microlenses 12. Figure 6 Compared with the embodiment shown in Figure (4), the area occupied by the first microlens 11 and the second microlens 12 in the defocus area A2 is further increased, which is beneficial to improving the defocus effect and slowing down the increase rate of visual acuity.

[0122] In some embodiments, such as Figure 6 As shown in Figure (6), the lens also includes a connection structure 13, through which the connection between at least two of the first microlenses 11 and the second microlenses 12 is achieved.

[0123] In some embodiments, the connection structure 13 may include at least one or a combination of a convex lens, a concave lens, or a cylindrical lens.

[0124] Referring again to Figure 3, in any of the above embodiments, the distance r1 between any point on the edge of the shape formed by the intersection of the center of the first microlens 11 and the second microlens 12 (which are concave lenses) and the portion thereof with the lens body 10 is greater than or equal to the radius of curvature r2 of the concave lens.

[0125] In this way, the orthographic projection of the structure of the concave lens in the first microlens 11 and the second microlens 12 in the thickness direction will not overlap with the orthographic projection of the structure of the convex lens in the thickness direction. This allows the lens provided in the present invention to enhance the defocusing effect while effectively improving the wearing comfort of the lens wearer and preventing dizziness and other conditions.

[0126] In some embodiments, the ratio of the area occupied by the first microlens 11 on the lens body 10 to the area occupied by the second microlens 12 on the lens body 10 ranges from 0.05 to 20 (inclusive), for example, 0.1, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, etc.

[0127] For example, if a nearsighted defocusing effect is desired, the area of ​​the convex lens in the first microlens 11 and the concave lens in the second microlens 12 can be higher, while the area of ​​the concave lens can be lower. When the first microlens 11 and the microlens 12 are located in other positions on the lens, the area of ​​the microstructures in the first microlens 11 and the second microlens 12 that achieve the nearsighted defocusing effect can also be higher. Conversely, when a farsighted defocusing effect is desired, the area ratios of the concave and convex lenses can be reversed.

[0128] In some embodiments, the ratio of the area occupied by the first microlens 11 and the second microlens 12 on the lens body 10 to the surface area of ​​the lens body 10 ranges from about 30% to 97.5% (including endpoint values), for example 32%, 34%, 35%, 36%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 96%, etc.

[0129] In this way, the operator can determine the area ratio of the first microlens 11 and the second microlens 12 in the defocus area based on the desired defocus effect of the lens to obtain the desired lens.

[0130] In some embodiments, the defocus region A2 includes at least a first region, and the relationship between the first microlens 11 and the second microlens 12 in the first region includes at least two of the following relationships:

[0131] The second microlens 12 is located between two adjacent first microlenses 11 and is tangent to the two first microlenses 11;

[0132] The second microlens 12 is located between the three adjacent first microlenses 11 and is tangent to the three first microlenses 11;

[0133] The second microlens 12 is located between four adjacent first microlenses 11 and is tangent to the four first microlenses 11.

[0134] In addition to the above methods, in some embodiments, the arrangement of the first microlens 11 and the second microlens 12 located in the defocus region A2 may also include the content mentioned in any of the embodiments involved in this disclosure.

[0135] Additionally, it should be noted that the first region can encompass various scenarios; in some embodiments, such as... Figure 2 As shown, the first region can be the entire defocus region A2. In most of the defocus region, a second microlens 12 is provided between two adjacent first microlenses 11. At the same time, near the center region A1, a second microlens 12 is provided between two connected first microlenses 12. A second microlens 12 is also provided between four second microlenses 12 located between two adjacent first microlenses 11.

[0136] In actual operation, the size or shape of the second microlens 12 can be the same, or it can be adjusted appropriately to improve the filling rate. Specifically, it can be flexibly selected according to the actual situation, and no specific limitation is made here.

[0137] In some other embodiments, the first region may be a portion of the defocus region A2. The first microlens 11 and the second microlens 12 included in this portion may have at least two different arrangements as described in any of the above embodiments. In this case, the remaining defocus region may have the same arrangement, but is not limited to this, and may also have different arrangements. No specific limitation is made here, and can be flexibly selected according to the actual situation.

[0138] In some embodiments, the patterns formed by the first microlens and the second microlens in different regions of the defocused area contain the same information as each other.

[0139] In this embodiment, the patterns set in different areas of the defocus zone may include one or more arrangement methods between the first microlens 11 and the second microlens 12 involved in any of the above embodiments. In the embodiment that includes multiple arrangement methods, the multiple arrangement methods exhibit a certain regularity, so that the obtained lens can have a more stable defocus effect and also has better wearing comfort.

[0140] In some embodiments, the patterns formed by the first microlens and the second microlens on at least partially different regions of the defocus region contain different information from each other.

[0141] In this embodiment, the patterns set in different areas of the defocus zone may include one or more of the arrangement of the first microlens 11 and the second microlens 12 involved in any of the above embodiments. However, one or more of these arrangement methods exist in an overall irregular or partially irregular manner, so that the obtained lens can not only have the required defocus effect, but also effectively reduce the occurrence of defocus saturation, prevent the wearer from experiencing a weakening of accommodation, and effectively prevent further growth or shortening of the axial length, thereby effectively preventing further increase in myopia or hyperopia.

[0142] In some embodiments, the pattern information of the first microlens and the second microlens located in different regions is different, but they can be arranged symmetrically with respect to certain features, which may include, but are not limited to, the vertical axis, the horizontal axis, or other structures or centers located on the lens.

[0143] It should be noted that the technical features described in the embodiments provided in this disclosure can be combined arbitrarily without conflict.

[0144] The above description is merely a preferred embodiment of this disclosure and is not intended to limit the scope of protection of this disclosure. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. An ophthalmic lens, characterized in that, include: A lens body, the lens body comprising a central region and a defocusing region surrounding the central region; The array of microstructures located on the defocus region includes a plurality of first microlenses arranged at intervals around the central region, and a second microlens located between and connected to at least two of the first microlenses; wherein one of the first microlenses and the second microlens is a convex lens and the other is a concave lens.

2. The ophthalmic lens according to claim 1, characterized in that, The center of the second microlens is located on the line connecting the center points of two adjacent first microlenses and is tangent to the two first microlenses.

3. The ophthalmic lens according to claim 1, characterized in that, The second microlens is located between the three adjacent first microlenses and is tangent to the three first microlenses.

4. The lens according to claim 1, characterized in that, The second microlens is located between the four adjacent first microlenses and is tangent to the four first microlenses.

5. The ophthalmic lens according to claim 1, characterized in that, The cross-sectional shape of the second microlens includes at least one or a combination of circular, elliptical, triangular, quadrilateral, polygonal and irregular shapes.

6. The ophthalmic lens according to claim 5, characterized in that, The first microlens and the second microlens may have the same or different cross-sectional shapes.

7. The ophthalmic lens according to any one of claims 1-6, characterized in that, The distance between any point on the edge of the shape formed by the intersection of the center of the first microlens and the concave lens of the second microlens and the lens body is greater than or equal to the radius of curvature of the concave lens.

8. The ophthalmic lens according to claim 7, characterized in that, The ratio of the area occupied by the first microlens on the lens body to the area occupied by the second microlens on the lens body ranges from 0.05 to 20.

9. The ophthalmic lens according to claim 7, characterized in that, The ratio of the area occupied by the first microlens and the second microlens on the lens body to the surface area of ​​the lens body ranges from approximately 30% to 97.5%.

10. The ophthalmic lens according to any one of claims 1-4, characterized in that, The defocused region includes at least a first region, and the relationship between the first microlens and the second microlens in the first region includes at least two of the following relationships: The second microlens is located between two adjacent first microlenses and is tangent to the two first microlenses; The second microlens is located between the three adjacent first microlenses and is tangent to the three first microlenses; The second microlens is located between the four adjacent first microlenses and is tangent to the four first microlenses.

11. The ophthalmic lens according to claim 8 or 9, characterized in that, The patterns formed by the first microlens and the second microlens in different regions of the defocused area contain the same information.

12. The ophthalmic lens according to claim 8 or 9, characterized in that, The patterns formed by the first microlens and the second microlens on at least partially different regions of the defocused region contain different information from each other.

13. The ophthalmic lens according to claim 1, characterized in that, The lens also includes a connecting structure, through which at least two of the first microlenses and the second microlenses are connected.

14. The ophthalmic lens according to any one of claims 1-6, characterized in that, The first microlens is arranged in multiple concentric rings in the defocus area, and the center of the multiple concentric rings is located at the center of the lens; or, The first microlens is arranged in two sets of symmetrical arc arrays. The arc is determined by three points: the first point is located at the intersection of the central prescription area and the vertical axis of the lens; the second point is located at the intersection of the edge of the lens and the horizontal axis of the lens; and the third point is the center of the arc. Alternatively, the central region may be shell-shaped, and the first microlens may be arranged in multiple shell-shaped configurations within the defocused region.

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