Lens with optical path difference regulation and control structure

Abstract

The utility model provides an optical path difference regulation and control structure lens, and relates to the field of optical lenses, the optical path difference regulation and control structure lens comprises a lens member, the lens member comprises a micro lens array, and the micro lens array comprises a plurality of micro lenses arranged in a sequential order to form an ultramicrostructure area for optical path difference regulation and control. The inner side of the ultramicrostructure area is provided with a central area without a micro lens; the plurality of micro lenses comprise a plurality of lens groups diverging and extending from inside to outside, and any two lens groups are rotationally symmetrical by taking a first geometric center of the central area as a fixed point; the plurality of lens groups are distributed at intervals and correspond to a plurality of extension axes, and the extension axes are continuous offset smooth curves. On the basis of the retina contrast theory, signal difference between adjacent cones and over-stimulation of retina photoreceptor cells are reduced by reasonably scattering light, and high-contrast signals are reduced; by adjusting the distribution of the lens group, the lenses can adapt to patients with different myopia degrees, and further meet the myopia correction requirements of specific crowds.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical lenses, in particular to an optical path difference regulation structure lens. BACKGROUND

[0002] Myopia prevention and control lenses change the retinal growth signal by imaging peripheral light at a specific position in front or behind the retina, thereby delaying the growth of the eye axis. In related technologies, myopia prevention and control lenses are mostly developed based on DOT, DIMS and DISC technologies; among them, DOT lenses are developed based on retinal contrast signal theory, DISC is a soft corneal contact technology, and is mostly used in contact lenses; DIMS is a myopia prevention and control lens based on peripheral defocus theory, and DIMS lenses and DISC lenses rely on defocus control.

[0003] The myopia prevention and control lenses in related technologies have an unsatisfactory optical fidelity effect due to insufficient contrast control. The microlenses in the lenses are usually uniformly distributed, and the cells of the human eye are not uniformly arranged. The performance of conventional myopia prevention and control lenses is not ideal, and therefore there is an urgent need to propose a new type of structure lens to meet the growing demand for myopia prevention and control. CONTENT OF THE INVENTION

[0004] In view of the deficiencies of the prior art, the present application provides an optical path difference regulation structure lens, which solves the problems of insufficient contrast control of current myopia prevention and control lenses and inaccurate myopia correction.

[0005] To achieve the above object, the present application is implemented by the following technical solutions:

[0006] In a first aspect, the present application provides an optical path difference regulation structure lens, which comprises a lens piece, the lens piece comprising a microlens array, the microlens array comprising a plurality of microlenses arranged in sequence to form a super microstructure region for optical path difference regulation, and the inner side of the super microstructure region being provided with a central region which is not provided with microlenses.

[0007] Specifically, the plurality of microlenses comprises a plurality of lens groups diverging and extending from the inside to the outside, and any two lens groups are rotationally symmetrical with the first geometric center of the central region as the fixed point; the plurality of lens groups are spaced apart and correspond to a plurality of extension axes, the extension axes being smooth curves continuously offset, and the plurality of microlenses in each lens group are spaced apart with the corresponding extension axis as the center; the first side of the lens piece is convex and the end portion corresponds to a target extension surface which is flat; the lens groups extend from the first side of the lens piece to the end portion of the lens piece, and the extension starting point and the extension ending point are respectively adjacent to the outer peripheral surface of the central region and the outer peripheral surface of the super microstructure region, and the extension starting point and the extension ending point each correspond to a microlens.

[0008] In some embodiments, the plurality of microlenses divide the supermicrostructure region into a first functional zone and a second functional zone by geometric array distribution and size variation, the second functional zone, the first functional zone and the central region are nested in turn and form a gradient refractive index.

[0009] In some embodiments, the projection of the first functional zone on the target extension plane is a polygon; the extension axis is continuous and has no inflection point, the extension axis is offset counterclockwise around its curvature center, and the curvature center is away from the outer peripheral surface of the supermicrostructure region.

[0010] In some embodiments, the size variation range of the microlenses in the two adjacent lens groups is consistent; at least part of the microlenses have different focal points, and the static local curvature of the outer contour surface of the microlenses gradually changes with the distance from the second geometric center thereof.

[0011] In some embodiments, the projection of each extension axis on the target extension plane is a target curve, the starting point and the ending point of the target curve from inside to outside correspond to a first tangent line and a second tangent line respectively, and the first tangent line and the second tangent line are oblique in space and have an acute angle.

[0012] In some embodiments, the outer contour of the central region and the supermicrostructure region is circular; the diameter of the central region ranges from 5mm to 9mm; and the size of the supermicrostructure region ranges from 30mm to 70mm.

[0013] In some embodiments, the optical path difference regulation structure lens further comprises a substrate, the substrate provides a connecting surface recessed inwardly, and the first side of the lens piece is adjacent to the connecting surface of the substrate and has a consistent size with the connecting surface.

[0014] In some embodiments, the lens piece further comprises a base zone composed of gaps between the plurality of microlenses, the first intermolecular bonding form of the base zone is different from the second intermolecular bonding form of the microlenses to change the scattering signal of the incident light and provide high-order signal modulation.

[0015] In some embodiments, the sum of the areas of the plurality of microlenses accounts for a filling rate of the supermicrostructure region, and the filling rate is set to range from 0.07 to 0.25.

[0016] In some embodiments, the size of the microlenses ranges from 0.01mm to 0.25mm; and the microlenses are one of a spherical mirror, an aspherical mirror, an asymmetric free-form mirror, a cylindrical lens, a parabolic mirror, a conical mirror and an asymmetric conical mirror.

[0017] The present application provides an optical path difference regulation structure lens. Compared with the prior art, the following beneficial effects are achieved:

[0018] The optical path difference regulation lens of the present application has a supermicrostructure region composed of a plurality of microlenses, the plurality of microlenses are distributed in a geometric array to present a plurality of lens groups extending divergently from inside to outside, the lens groups extend from the first side of the lens piece to the end to cover the entire width range of the lens piece, each lens group is independently configured and the plurality of lens groups are regularly distributed in a specific manner, any two lens groups are rotationally symmetrical with the first geometric center of the central region as the fixed point, and correspond to a specific human eye cell distribution feature; the present application is based on the retinal contrast theory, reduces the signal difference between adjacent cones and the excessive stimulation of retinal photoreceptor cells by reasonably scattering light, and reduces high-contrast signals; by adjusting the distribution of the lens groups, the lens can be adapted to patients with different degrees of myopia, and the optical path difference regulation of the lens piece can accurately adapt to the myopia correction needs of specific groups of people. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0020] Figure 1 is a side view of a lens piece of an optical path difference regulation structure lens provided by the present application embodiment;

[0021] Figure 2 is Figure 1 is an enlarged schematic view of a in

[0022] Figure 3 is a perspective view of a lens piece of an optical path difference regulation structure lens provided by the present application embodiment.

[0023] The drawings are as follows: lens piece 1; microlens 2; lens group 3; supermicrostructure region A; central region B; target extension surface C; first functional area D; second functional area E. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application are described clearly and completely. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0025] It is to be noted that the relative terms, such as first and second, and the like, are used herein solely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0026] The embodiment of the present application provides a light path difference regulation structure lens, and solves the problems of insufficient contrast control and inaccurate myopia correction of a current myopia prevention lens.

[0027] The technical solutions in the embodiment of the present application are as follows to solve the above technical problems:

[0028] The myopia prevention lens changes the retinal growth signal by imaging peripheral light on a specific position in front of or behind the retina, and delays the growth of the eye axis. In the related art, the myopia prevention lens is developed based on DOT, DIMS and DISC technologies. The DOT lens is developed based on the retinal contrast signal theory, the DISC is a soft corneal contact technology, and is mainly used in contact lenses. The DIMS is a myopia prevention lens based on the peripheral defocus theory, and the DIMS lens and the DISC lens rely on defocus control.

[0029] The myopia prevention lens in the related art has an unsatisfactory optical fidelity effect due to insufficient contrast control. The microlenses in the lens are usually uniformly distributed, and the cells of the human eye are not uniformly arranged. The performance of the conventional myopia prevention lens is not ideal, and therefore a new type of structure lens is urgently needed to meet the increasing demand for myopia prevention.

[0030] In order to better understand the above technical solutions, the above technical solutions will be described in detail in combination with the description of the drawings and the specific embodiments.

[0031] First, a light path difference regulation structure lens provided by the embodiment of the present application will be introduced.

[0032] The light path difference regulation structure lens provided by the embodiment of the present application is described in combination with Figures 1-3The optical path difference regulation structure lens comprises a lens piece 1, the lens piece 1 comprises a microlens array, the microlens array comprises a plurality of microlenses 2 arranged in sequence to form an optical path difference regulation super microstructure region A, and an inner side of the super microstructure region A is provided with a central region B which is not provided with the microlenses 2.

[0033] Specifically, the plurality of microlenses 2 comprises a plurality of lens groups 3 extending divergently from inside to outside, any two lens groups 3 are rotationally symmetrical with the first geometric center of the central region B as the fixed point; the plurality of lens groups 3 are distributed at intervals and correspond to a plurality of extension axes, the extension axes are smooth curves continuously offset, and the plurality of microlenses 2 in each lens group 3 are arranged at intervals with the corresponding extension axis as the center; a first side of the lens piece 1 is convex and the end part corresponds to a target extension surface C which is flat; the lens group 3 extends from the first side of the lens piece 1 to the end of the lens piece 1, and the extension starting point and the extension ending point are respectively adjacent to the outer peripheral surface of the central region B and the outer peripheral surface of the super microstructure region A, and the extension starting point and the extension ending point each correspond to one microlens 2.

[0034] In the embodiments of the present application, it can be understood that the optical path difference regulation lens of the present application has a super microstructure region A composed of a plurality of microlenses 2, the plurality of microlenses 2 presents a plurality of lens groups 3 extending divergently from inside to outside through geometric array distribution, the lens group 3 extends from the first side of the lens piece 1 to the end to cover the entire range of the lens piece 1, each lens group 3 is independently configured and the plurality of lens groups 3 are regularly distributed in a specific manner, any two lens groups 3 are rotationally symmetrical with the first geometric center of the central region B as the fixed point, and then correspond to the specific human eye cell distribution characteristics.

[0035] Further, based on the retinal contrast theory, the present application reduces the signal difference between adjacent cones and the excessive stimulation of retinal photoreceptor cells by reasonably scattering light, and reduces the high contrast signal; by adjusting the distribution of the lens group 3, the lens can be adapted to patients with different degrees of myopia, so that the optical path difference regulation of the lens piece 1 can accurately adapt to the myopia correction needs of part of the specific population.

[0036] In some embodiments, referring to Figure 3 , the plurality of microlenses 2 divides the super microstructure region A into a first functional area D and a second functional area E through geometric array distribution and size change, the second functional area E, the first functional area D and the central region B are nested in sequence and form a gradient refractive index.

[0037] In the embodiments of the present application, it can be understood that at the junction position of the first functional area D and the second functional area E, the size of the microlens 2 has a large mutation, so that the entire range of the super microstructure region A presents different specific regions based on the size change of the microlens 2.

[0038] It should be noted that the microlens 2 in the present application is a nano-scale diffractive structure with an effective haze of not more than 15% to reduce the spatial frequency and imaging degree of the incident light in the super microstructure area; the nano-scale diffractive structure is a structure with nanometer scale characteristic size and based on the principle of light diffraction, the nano-scale diffractive structure has a periodicity precisely controlled at the nanometer scale, and such a periodic structure can produce a specific diffraction effect on incident light.

[0039] In some embodiments, referring to Figures 1-3 , the projection of the first functional area D on the target extension surface C is a polygon; the extension axis is continuous and has no inflection point, the extension axis is offset counterclockwise around the curvature center of itself, and the curvature center is away from the outer peripheral surface of the super microstructure area A. It can be understood that the plurality of microlenses 2 in each lens group 3 diverge along a specific extension axis in space, and the convexity of the extension axis is related to the structural characteristics of the lens piece 1.

[0040] In some embodiments, the projection of each extension axis on the target extension surface C is a target curve, and the starting point and the ending point of the target curve from the inside to the outside correspond to the first tangent and the second tangent respectively, and the first tangent and the second tangent are inclined to intersect in space and the included angle is an acute angle.

[0041] In the embodiments of the present application, the plurality of microlenses 2 in the lens group 3 gradually offset along the corresponding extension axis, and the included angle between the first tangent and the second tangent can control the offset amplitude of the spaced arrangement of the microlenses 2.

[0042] In one example, the size variation amplitude of the microlenses 2 in the two adjacent lens groups 3 is consistent; at least part of the microlenses 2 have different focal points, and the corresponding static local curvature of the outer contour surface of the microlenses 2 gradually changes with the distance from the second geometric center thereof.

[0043] In some embodiments, the outer contour of the center area B and the super microstructure area A is circular; the diameter of the center area B ranges from 5mm to 9mm; the size of the super microstructure area A ranges from 30mm to 70mm. The size of the microlens 2 ranges from 0.01mm to 0.25mm; the microlens 2 is one of a spherical mirror, an aspherical mirror, an asymmetric free-form surface mirror, a cylindrical lens, a parabolic mirror, a conical mirror and an asymmetric conical mirror.

[0044] In the embodiments of the present application, it can be understood that the size of the microlens of the conventional myopia prevention and control lens is relatively large and generally ranges from 0.8mm to 2mm; by significantly reducing the size of the microlens 2, the present application can accommodate more microlenses 2 per unit area in the super microstructure area A, thereby achieving high-intensity optical path difference regulation and forming a persistent super-low disturbance defocus area.

[0045] It should be noted that the microlens 2 is a super-micro defocus lens, each microlens 2 has a light scattering effect, which refers to the phenomenon that part of the light deviates from the original direction of propagation when encountering a non-uniform medium during propagation. The light outside the propagation direction is called scattered light. By arranging a plurality of microlenses 2, the propagation and scattering characteristics of the lens to the light can be changed, thereby adjusting the contrast of the light entering the eye to achieve a specific visual effect and physiological effect, which has a positive effect on myopia prevention and control; under the action of a plurality of microlenses 2, the contrast control function and the optical path difference regulation function can be realized at the same time.

[0046] In some embodiments, the optical path difference regulation structure lens further comprises a substrate, the substrate provides a connecting surface recessed inwardly, and the first side of the lens piece 1 is adjacent to the connecting surface of the substrate and the size of the two is consistent. It can be understood that the entire optical path difference regulation structure lens is composed of the substrate and the lens piece 1, and the optical path difference regulation is carried out by arranging the lens piece 1 on one side of the substrate, so that the lens is adapted to patients with different degrees of myopia.

[0047] In some embodiments, the lens piece 1 further comprises a base area composed of gaps between a plurality of microlenses 2, and the first intermolecular bonding form of the base area is different from the second intermolecular bonding form of the microlens 2 to change the scattering signal of incident light and provide high-order signal modulation. It can be understood that the material passing rate of the base area and the microlens 2 is different, the intermolecular bonding form of the material is different, the resin structure of the microlens 2 is smaller and filled with metal ions or metal oxides, which is beneficial to realize the regulation of the optical path.

[0048] In one example, the sum of the areas of the plurality of microlenses 2 accounts for a proportion of the area of the base area, which is the filling rate of the super-micro structure area A, and the setting range of the filling rate is: 0.07-0.25; the filling rate can be adjusted according to actual needs.

[0049] In summary, compared with the prior art, the present application has the following beneficial effects:

[0050] 1、The optical path difference regulation lens of the present application has a super-micro structure area A composed of a plurality of microlenses 2, the plurality of microlenses 2 are distributed in a geometric array and present a plurality of lens groups 3 extending from inside to outside, the lens group 3 extends from the first side of the lens piece 1 to the end to cover the entire width range of the lens piece 1, each lens group 3 is independently configured and the plurality of lens groups 3 are regularly distributed, and any two lens groups 3 are rotationally symmetrical with the first geometric center of the central area B as the fixed point, thereby corresponding to the specific human eye cell distribution characteristics.

[0051] 2、The application is based on the retinal contrast theory, reduces the signal difference between adjacent cones and the overstimulation of retinal photoreceptor cells by reasonably scattering light, and reduces high contrast signals; by adjusting the distribution of the lens group 3, the lens can be adapted to patients with different degrees of myopia, so that the optical path difference regulation of the lens piece 1 can accurately adapt to the myopia correction needs of part of the specific population.

[0052] The above examples are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An optical path difference modulating structure lens, characterized by, The lens piece (1) includes a microlens array, the microlens array includes a plurality of microlenses (2) arranged in sequence to form an optical path difference regulation super microstructure area (A), and the inner side of the super microstructure area (A) is provided with a central area (B) which is not provided with the microlenses (2); Wherein, the plurality of microlenses (2) includes a plurality of lens groups (3) extending divergently from inside to outside, and any two lens groups (3) are rotationally symmetrical with the first geometric center of the central area (B) as the fixed point; The plurality of lens groups (3) are spaced apart and correspond to a plurality of extension axes, the extension axes are smooth curves continuously offset, and the plurality of microlenses (2) in each lens group (3) are spaced apart with the corresponding extension axis as the center; The first side of the lens piece (1) is convex, and the end portion corresponds to a target extension surface (C) which is flat; the lens groups (3) extend from the first side of the lens piece (1) to the end portion of the lens piece (1), and the extension starting point and the extension ending point are respectively adjacent to the outer peripheral surface of the central area (B) and the outer peripheral surface of the super microstructure area (A), and the extension starting point and the extension ending point each correspond to one microlens (2).

2. The optical path difference modulating structure lens according to claim 1, wherein, The plurality of microlenses (2) divide the super microstructure area (A) into a first functional area (D) and a second functional area (E) through geometric array distribution and size variation, and the second functional area (E), the first functional area (D) and the central area (B) are nested in turn and form a gradient refractive index.

3. The OPD-Modulated Structure Lens of claim 2, wherein, The projection of the first functional area (D) on the target extension surface (C) is a polygon; the extension axis is continuous and has no inflection point, the extension axis is offset counterclockwise around its curvature center, and the curvature center is away from the outer peripheral surface of the super microstructure area (A).

4. The OPD-structured lens of claim 1, wherein, The size variation amplitude of the microlenses (2) in the two adjacent lens groups (3) is consistent; at least part of the microlenses (2) have different focal points, and the static local curvature of the outer contour surface of the microlenses (2) gradually changes with the distance from the second geometric center thereof.

5. The OPD-structured lens of claim 1, wherein, The projection of each extension axis on the target extension surface (C) is a target curve, the starting point position and the ending point position of the target curve from inside to outside correspond to a first tangent and a second tangent respectively, and the first tangent and the second tangent are oblique in space and the included angle is an acute angle.

6. The optical path difference tuning structure lens of claim 1, wherein, The outer contours of the central area (B) and the super microstructure area (A) are circular; the diameter of the central area (B) ranges from 5mm to 9mm; the size of the super microstructure area (A) ranges from 30mm to 70mm.

7. The optical path difference tuning structure lens of claim 1, wherein, It also includes a substrate, the substrate provides a connecting surface recessed to the inside thereof, and the first side of the lens piece (1) is adjacent to the connecting surface of the substrate and the size of the two is consistent.

8. The optical path difference tuning structure lens of claim 1, wherein, The lens piece (1) further comprises a base area composed of gaps between the plurality of microlenses (2), a first intermolecular bonding form of the base area being different from a second intermolecular bonding form of the microlenses (2) to change a scattering signal of incident light and provide high-order signal modulation.

9. The OPD-Modulated Lens of claim 8, wherein, A ratio of a sum of areas of the plurality of microlenses (2) to an area of the base area is a filling rate of the supermicrostructure area (A), and the filling rate is set in a range of 0.07-0.

25.

10. The OPD-tuned structure lens of claim 9, wherein, The microlenses (2) have a size in a range of 0.01 mm-0.25 mm, and are one of a spherical mirror, an aspherical mirror, an asymmetric free-form mirror, a cylindrical mirror, a parabolic mirror, a conical mirror, and an asymmetric conical mirror.

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