Lens with optical path difference regulation and control structure
By designing optical path difference-adjustable structural lenses, the problem of insufficient contrast control in existing myopia control lenses has been solved, achieving precise myopia correction and slowing axial elongation, and adapting to patients with different degrees of myopia.
Patent Information
- Application Number
- CN202520247938.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-16
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-02-16
AI Technical Summary
Existing myopia control lenses suffer from insufficient contrast control, resulting in unsatisfactory optical fidelity and inaccurate myopia correction.
A lens with optical path difference adjustment structure is designed. By using a specific geometric array distribution and gradient refractive index of microlens arrays, combined with retinal contrast theory, light is rationally scattered to reduce excessive stimulation of retinal photoreceptor cells and adapt to patients with different degrees of myopia.
It achieves precise myopia correction, reduces axial elongation, adapts to the myopia control needs of different groups, and improves the optical fidelity and correction accuracy of the lenses.
Smart Images
Figure CN223728079U_ABST
Abstract
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 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 lenses are mostly developed based on DOT, DIMS and DISC technologies; 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 lens based on peripheral defocus theory, and DIMS lenses and DISC lenses rely on defocus control.
[0003] The myopia prevention 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. Therefore, the performance of conventional myopia prevention lenses is not ideal, and there is an urgent need to propose a new type of structure lens to meet the growing demand for myopia prevention. 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 lenses and inaccurate myopia correction.
[0005] To achieve the above purpose, 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 a central region without microlenses on the inner side of the super microstructure region.
[0007] Specifically, from the outer periphery of the central region to the outer periphery of the super microstructure region, the plurality of microlenses diverge radially with arc extension lines as axes, the arc extension lines are continuous and have no inflection points, the arc extension lines are offset counterclockwise around their curvature centers, and the curvature centers are away from the outer periphery of the super microstructure region; each microlens has a geometric center corresponding to a point in the super microstructure region, and the plurality of points gradually develop from dense to sparse to form a gradient refractive index; the plurality of microlenses form a plurality of first lens groups and a plurality of second lens groups, the first lens groups and the second lens groups are spaced apart one-to-one, and each of the two groups corresponds to an arc extension line diverging outward.
[0008] In some embodiments, the intervals of the first lens group and the second lens group adjacent to each other gradually increase from inside to outside, and in the first lens group and the second lens group, the microlenses are alternately arranged in large and small sizes.
[0009] In some embodiments, in the first lens group, the size ratio of two adjacent microlenses corresponds to a first proportion; in the second lens group, the size ratio of two adjacent microlenses corresponds to a second proportion; the second proportion is greater than the first proportion.
[0010] In some embodiments, the first side of the lens piece is convex, and the end portion corresponds to a target extension plane which is flat; the outer contours of the central region and the super microstructure region are circular; the extension directions of the first lens group and the second lens group are directed to the end portion of the lens piece.
[0011] In some embodiments, the projection of the arc-shaped extension line of any one of the first lens group and the second lens group on the target extension plane corresponds to 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 line and a second tangent line respectively, and the first tangent line and the second tangent line are oblique in space and the included angle is an acute angle.
[0012] In some embodiments, the optical path difference regulation structure lens further comprises a substrate, the substrate provides a connecting surface recessed to the inside, and the first side of the lens piece is adjacent to the connecting surface of the substrate and the size of the two is consistent.
[0013] In some embodiments, the diameter of the central region ranges from 5mm to 9mm; the size of the super microstructure region ranges from 30mm to 70mm.
[0014] In some embodiments, at least part of the microlenses have different focal points, the static local curvature of the outer contour surface of the microlenses gradually changes with the distance from the geometric center thereof, and the size of the microlenses ranges from 0.01mm to 0.25mm.
[0015] In some embodiments, the lens piece further comprises a substrate region composed of gaps between the microlenses, and the first intermolecular bonding form of the substrate region is different from the second intermolecular bonding form of the microlenses.
[0016] In some embodiments, the defocus amount De of the microlenses satisfies +4.50D≤De≤+10.00D, wherein D represents diopter, and +10.00D is the extreme defocus; the microlenses reach the extreme defocus within an 8° field of view angle, and the defocus amount of the microlenses is positively correlated with the field of view angle.
[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 structure lens of the application comprises a microlens array, in which a plurality of microlenses are radially divergent with arc extension lines as axes from inside to outside, the arc extension lines are offset counterclockwise around the curvature center, and the curvature center is away from the outer peripheral surface of the super microstructure region, and the plurality of microlenses gradually become sparse from inside to outside, so that the plurality of microlenses are distributed in a specific geometric array, thereby forming a gradient refractive index; the distribution of the plurality of microlenses is specifically divergent and extended by a first lens group and a second lens group, based on the retinal contrast theory, the signal difference between adjacent cones and the excessive stimulation of retinal photoreceptor cells are reduced by reasonably scattering light, and high contrast signals are reduced; the first lens group and the second lens group can be independently configured, corresponding to specific human eye cell distribution characteristics, by adjusting the distribution characteristics of the first lens group and the second lens group, the lens can be adapted to patients with different degrees of myopia, and the optical path difference regulation of the whole lens piece can accurately adapt to the myopia correction needs of part of the specific population. BRIEF DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only constitute some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.
[0020] Figure 1 is a structural schematic diagram of a lens piece of an optical path difference regulation structure lens provided by an embodiment of the application;
[0021] Figure 2 is a three-dimensional schematic diagram of the lens piece provided by the embodiment of the application;
[0022] Figure 3 is Figure 1 is an enlarged schematic diagram at a in
[0023] Figure 4 is Figure 1 is an enlarged schematic diagram at b in
[0024] Figure 5 is a side view of the lens piece provided by the embodiment of the application;
[0025] Figure 6 is Figure 5 is an enlarged schematic diagram at c in
[0026] The drawings show that: the lens piece 1; the end part 11; the microlens 2; the first lens group 3; the second lens group 4; the super microstructure region A; the central region B; the target extension surface C. DETAILED DESCRIPTION
[0027] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application are described clearly and completely. Obviously, the described embodiments are some embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.
[0028] It should be noted that, in this document, the terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of additional same elements in the process, method, article or device including the element.
[0029] The embodiments of the present application provide an optical path difference regulation structure lens, which solves the problems of insufficient contrast control and inaccurate myopia correction of current myopia prevention lenses.
[0030] The technical solutions in the embodiments of the present application are as follows to solve the above technical problems:
[0031] The myopia prevention lens changes the retinal growth signal by imaging peripheral light on a specific position in front or behind the retina, and delays the growth of the eye axis. In the related art, myopia prevention lenses are mostly developed based on DOT, DIMS and DISC technologies; wherein, the DOT lens is developed based on the retinal contrast signal theory, the DISC is a soft corneal contact technology, and is mostly 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.
[0032] 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 human eye cells 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.
[0033] In order to better understand the above technical solutions, the above technical solutions will be described in detail in combination with the drawings in the specification and specific embodiments.
[0034] Firstly, an optical path difference regulation structure lens provided by the embodiments of the present application is introduced.
[0035] The optical path difference regulation structure lens provided by the embodiments of the present application 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 a super microstructure region A for optical path difference regulation, and the inside of the super microstructure region A is provided with a central region B without the microlenses 2. Figures 1-6
[0036] Specifically, from the outer circumferential surface of the central region B to the outer circumferential surface of the super microstructure region A, the plurality of microlenses 2 radiate outward along the arc extension line as the axis, the arc extension line is continuous and has no inflection point, the arc extension line is offset counterclockwise around the curvature center, and the curvature center is away from the outer circumferential surface of the super microstructure region A; each microlens 2 has a geometric center, and the geometric center corresponds to a point in the super microstructure region A, and a plurality of points gradually develop from dense to sparse from inside to outside to form a gradient refractive index; the plurality of microlenses 2 form a plurality of first lens groups 3 and a plurality of second lens groups 4, the first lens groups 3 and the second lens groups 4 are distributed in pairs and spaced apart, and each of the two corresponds to an arc extension line outwardly diverging.
[0037] In the embodiments of the present application, it can be understood that the optical path difference regulation structure lens of the present application comprises a microlens array, in the microlens array, the plurality of microlenses 2 radiate outward along the arc extension line as the axis, the arc extension line is offset counterclockwise around the curvature center, and the curvature center is away from the outer circumferential surface of the super microstructure region A, the plurality of microlenses 2 gradually become sparse from inside to outside, so that the plurality of microlenses 2 are distributed in a specific geometric array, thereby forming a gradient refractive index, and providing different optical path difference control amounts in different ranges of the super microstructure region. The distribution of the plurality of microlenses 2 is specifically diverged and extended by the first lens groups 3 and the second lens groups 4, based on the retinal contrast theory, the signal difference between adjacent cones and the overstimulation of retinal photoreceptor cells are reduced by reasonably scattering light, the high contrast signal is reduced, thereby reducing the elongation signal emitted to the glasses, and the axial length is delayed.
[0038] Further, the first lens groups 3 and the second lens groups 4 can be independently configured, thereby corresponding to the specific cell distribution characteristics of the human eye, by adjusting the distribution characteristics of the first lens groups 3 and the second lens groups 4, the lens can be adapted to patients with different degrees of myopia, and the optical path difference regulation of the entire lens piece 1 can accurately adapt to the myopia correction needs of part of the specific population.
[0039] In some embodiments, referring to Figures 1-4 The interval between the adjacent first lens group 3 and second lens group 4 gradually increases from inside to outside, and in the first lens group 3 and second lens group 4, the microlenses 2 are alternately arranged in large and small sizes based on their own sizes.
[0040] In the embodiments of the present application, it can be understood that in the whole area A of the super microstructure, the plurality of microlenses 2 are divided into the first lens group 3 and second lens group 4 for extension and offset, and in the first lens group 3 and second lens group 4, the microlenses 2 are independently arranged and approximately uniformly distributed in large and small sizes in the area.
[0041] In one example, in the first lens group 3, the size ratio of the adjacent two microlenses 2 corresponds to a first proportion; in the second lens group 4, the size ratio of the adjacent two microlenses 2 corresponds to a second proportion; the second proportion is greater than the first proportion. It can be understood that the size variation range of the adjacent two microlenses 2 in the second lens group 4 is greater than that in the first lens group 3.
[0042] In some embodiments, please refer to Figure 2 and Figure 5 The first side of the lens piece 1 is convex, and the end 11 corresponds to a target extension surface C which is flat; the outer contours of the central area B and super microstructure area A are circular; the extension directions of the first lens group 3 and second lens group 4 are directed to the end 11 of the lens piece 1.
[0043] In the embodiments of the present application, it can be understood that the plurality of microlenses 2 in the first lens group 3 and second lens group 4 are extended based on the shape of the lens piece 1 to cover the corresponding area; in addition, the central area B needs to ensure clear vision according to requirements, and the central area B corresponds to the macular area of the human eye. The circular central area B is an ideal state, and there will be slight differences for different people.
[0044] In one example, the projection of the arc-shaped extension line of any one of the first lens group 3 and second lens group 4 on the target extension surface C corresponds to a target curve, the starting point and ending point 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. It can be understood that the plurality of microlenses 2 in the first lens group 3 and second lens group 4 gradually offset along the arc-shaped extension line, and the included angle of the first tangent and the second tangent can control the offset range of the microlenses 2.
[0045] In some embodiments, the optical path difference regulation structure lens further comprises a substrate, the substrate provides a connecting surface recessed to the inside, and the first side of the lens piece 1 is adjacent to the connecting surface of the substrate and the area size of the two is consistent.
[0046] In the embodiments of the present application, it can be understood that the whole optical path difference regulation structure lens is composed of a substrate and a lens piece 1, and the optical path difference regulation is performed 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, and then the myopia correction needs of specific groups of people are accurately adapted.
[0047] In some embodiments, the diameter of the central region B ranges from 5 mm to 9 mm, and the width of the super microstructure region A ranges from 30 mm to 70 mm. 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 geometric center thereof, and the size of the microlenses ranges from 0.01 mm to 0.25 mm.
[0048] In the embodiments of the present application, the size of the microlenses of the conventional myopia prevention lens is relatively large and generally ranges from 0.8 mm to 2 mm; by significantly reducing the size of the microlenses 2, more microlenses 2 are accommodated per unit area, thereby achieving high-intensity optical path difference regulation and forming a persistent super-low disturbance defocus area.
[0049] In some embodiments, the lens piece 1 further comprises a base region composed of gaps between the microlenses 2, and the first intermolecular bonding form of the base region is different from the second intermolecular bonding form of the microlenses 2.
[0050] In the embodiments of the present application, it can be understood that the materials of the base region and the microlenses 2 have different passing rates, and the intermolecular bonding forms of the materials are different, and the resin structure of the microlenses 2 is smaller and filled with metal ions or metal oxides, which is beneficial to the regulation of the optical path.
[0051] In some embodiments, the defocus amount De of the microlenses 2 satisfies +4.50D≤De≤+10.00D, wherein D represents diopter, and +10.00D is the extreme defocus; the microlenses 2 reach the extreme defocus within an 8° field of view, and the defocus amount of the microlenses 2 is positively correlated with the field of view.
[0052] In the embodiments of the present application, it can be understood that by arranging a plurality of microlenses 2, the propagation and scattering characteristics of the lens to light can be changed, so as to adjust the contrast of the light entering the eye to achieve a specific visual effect and physiological effect.
[0053] In summary, compared with the prior art, the present application has the following beneficial effects:
[0054] 1、The plurality of microlenses 2 in the application is arranged in a specific geometric array, thereby forming a gradient refractive index; the distribution of the plurality of microlenses 2 is specifically extended by the first lens group 3 and the second lens group 4, based on the retinal contrast theory, the signal difference between adjacent cones and the excessive stimulation of retinal photoreceptor cells are reduced by reasonable scattering of light, the high-contrast signal is reduced, thereby reducing the elongation signal emitted to the glasses, and the axial length growth is delayed.
[0055] 2、The first lens group 3 and the second lens group 4 in the application can be independently configured, thereby corresponding to the specific cell distribution characteristics of the human eye, by adjusting the distribution characteristics of the first lens group 3 and the second lens group 4, the lens can be adapted to patients with different degrees of myopia, and the optical path difference regulation of the whole lens piece 1 can accurately adapt to the myopia correction needs of part of the specific population.
[0056] 3、The application significantly reduces the size of the microlens 2 so that more microlenses 2 are contained per unit area, thereby realizing high-intensity optical path difference regulation and forming a sustained ultra-low disturbance defocus area; the plurality of microlenses 2 can change the propagation and scattering characteristics of the light rays of the lens, thereby adjusting the contrast of the light rays entering the eye to achieve a specific visual effect and physiological effect.
[0057] The above embodiments are only used to illustrate the technical solutions of the application, but not limit it; although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments 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 application.
Claims
1. An optical path difference modulating structure lens, characterized by, The lens piece (1) comprises a microlens array, the microlens array comprises a plurality of microlenses (2) arranged in sequence to form a super microstructure area (A) for optical path difference regulation, and the inside of the super microstructure area (A) is provided with a central area (B) without the microlenses (2); Wherein, from the outer periphery of the central area (B) to the outer periphery of the super microstructure area (A), the plurality of microlenses (2) radiate outward along the arc extension line as the axis, the arc extension line is continuous and has no inflection point, the arc extension line is offset counterclockwise around the curvature center, and the curvature center is away from the outer periphery of the super microstructure area (A); Each of the microlenses (2) has a geometric center, and the geometric center corresponds to a point in the super microstructure area (A), and a plurality of the points gradually develop from dense to sparse from inside to outside to form a gradient refractive index. The plurality of microlenses (2) form a plurality of first lens groups (3) and a plurality of second lens groups (4), the first lens groups (3) and the second lens groups (4) are spaced apart one by one, and each of the two corresponds to an arc extension line outward.
2. The optical path difference modulating structure lens according to claim 1, wherein, The spacing between the adjacent first lens groups (3) and the second lens groups (4) gradually increases from inside to outside, and in the first lens groups (3) and the second lens groups (4), the microlenses (2) are alternately arranged in large and small sizes based on their own sizes.
3. The OPD-Modulated Structure Lens of claim 2, wherein, In the first lens group (3), the size ratio of the two adjacent microlenses (2) corresponds to a first ratio; in the second lens group (4), the size ratio of the two adjacent microlenses (2) corresponds to a second ratio; the second ratio is greater than the first ratio.
4. The OPD-tuned structure lens of any one of claims 1-3, wherein, The first side of the lens piece (1) is convex, and the end (11) corresponds to a target extension plane (C) which is flat; the outer contours of the central area (B) and the super microstructure area (A) are circular; the extension directions of the first lens groups (3) and the second lens groups (4) point to the end (11) of the lens piece (1).
5. The OPD-Modulated Lens of claim 4, wherein, The projection of the arc extension line of any one of the first lens groups (3) and the second lens groups (4) on the target extension plane (C) corresponds to a target curve, the starting point and the ending point 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 acute.
6. The OPD-tuned structure lens of claim 4, wherein, It also includes a substrate, the substrate provides a connecting surface recessed to the inside, the first side of the lens piece (1) is adjacent to the connecting surface of the substrate, and the width of the two is consistent.
7. The OPD-tuned structure lens of any one of claims 1-3, wherein, The diameter of the central area (B) ranges from 5mm to 9mm; the width of the super microstructure area (A) ranges from 30mm to 70mm.
8. The OPD-tuned structure lens of any one of claims 1-3, wherein, At least part of the microlenses (2) have different focal points, the static local curvature of the outer contour surface of the microlenses (2) gradually changes with the distance from the geometric center, and the size of the microlenses ranges from 0.01mm to 0.25mm.
9. The OPD-tuned-structure lens of any of claims 1-3, 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).
10. The OPD-tuned-structure lens of any one of claims 1-3, wherein, The defocus amount De of the microlenses (2) satisfies: +4.50D≤De≤+10.00D, wherein D represents diopter, and +10.00D is an extreme defocus; the microlenses (2) reach the extreme defocus within an 8° field of view angle, and the defocus amount of the microlenses (2) is positively correlated with the field of view angle.