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 lens, the optical path difference regulation and control structure lens comprises a lens part, the lens part comprises a micro lens array, the micro lens array comprises a plurality of micro lenses to form an ultra-microstructure area for optical path difference regulation and control, the inner side of the ultra-microstructure area is provided with a central area without micro lenses, and the micro lenses are arranged in the central area. The plurality of micro lenses form a spiral part and a sparse area, and the spiral part is an encrypted area formed by the plurality of micro lenses; the spiral part spirally extends from inside to outside in the ultramicrostructure area, and the breadth of the spiral part inclined to the extending direction of the spiral part is gradually increased. The microlenses with different focuses are arranged in the ultrastructure area to regulate and control the optical path difference, the distribution rules of the multiple microlenses in the breadth of the whole ultrastructure area are consistent and correspond to partial specific human eye cell distribution characteristics, and the problems that a current myopia prevention and control lens is insufficient in contrast control and inaccurate in myopia correction are solved.

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 special optical design, so as to delay the growth of the eye axis. In the related art, myopia prevention and control lenses are mostly developed based on DOT, DIMS and DISC technology; wherein, 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, and the purpose of defocus control is to form myopic defocus at the periphery of the retina to offset the influence of hyperopic defocus.

[0003] However, the conventional defocus control cannot provide high-order signal modulation by the scattering signal of incident light, and the myopia prevention and control lenses in the related art will cause 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 the conventional myopia prevention and control lenses is not ideal, and therefore a new type of structure lens is urgently needed to meet the increasing 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 and inaccurate myopia correction of the current myopia prevention and control lenses.

[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 a central region without microlenses on the inner side of the super microstructure region.

[0007] Specifically, the plurality of microlenses form a spiral portion and a sparse area by changes in position and size, the spiral portion and the sparse area are located inside the super microstructure region, and the spiral portion is an encryption area formed by the plurality of microlenses; the spiral portion extends in a spiral shape from inside to outside in the super microstructure region, and the width of the spiral portion gradually increases in the direction of its own extension; the plurality of microlenses form a plurality of target branches, and the plurality of microlenses in the target branches are spaced apart and arranged in a radial manner from inside to outside; the size of the microlenses in the target branches alternately decreases and increases, and the spiral portion has a plurality of clusters of microlenses continuously from inside to outside.

[0008] According to a first aspect of embodiments of the present application, the spiral portion comprises a plurality of first lens segments spaced apart from each other, and a direction of the spaced arrangement of the plurality of microlenses in each first lens segment is inclined to an extension direction of the spiral portion.

[0009] According to a first aspect of embodiments of the present application, the sparse region comprises a plurality of second lens segments aligned with the extension direction of the first lens segments, and the first lens segments and the second lens segments constitute target segments.

[0010] According to a first aspect of embodiments of the present application, the plurality of clusters of microlenses correspond to a plurality of target thresholds, one target threshold corresponds to a size of the largest microlens in one cluster of microlenses, and the plurality of target thresholds corresponding to the plurality of clusters of microlenses gradually increase from an inner side to an outer side of the supermicrostructure region.

[0011] According to a first aspect of embodiments of the present application, the spiral portion and the sparse region respectively comprise a first sub-portion and a second sub-portion connected to an outer edge of the lens piece, and a width of the first sub-portion and the second sub-portion is limited by a size of the lens piece and connected to the outer edge of the lens piece.

[0012] According to a first aspect of embodiments of the present application, the lens piece has a first side and a second side opposite in a thickness direction of the lens piece, the first side of the lens piece is convex, and the second side of the lens piece is planar, and the second side of the lens piece is a two-dimensional extension plane where an end portion away from the first side is located.

[0013] According to a first aspect of embodiments of the present application, the spiral portion and the sparse region both gradually extend from an outer edge of the central region in a thickness direction of the lens piece, and extend from the first side of the lens piece to the second side of the lens piece.

[0014] According to a first aspect of embodiments of the present application, the optical path difference regulation structure lens further comprises a substrate, the substrate provides a connecting surface recessed to an inner side of the substrate, the first side of the lens piece is adjacent to the connecting surface of the substrate and the width of the two is consistent; the size of the microlens ranges from 0.01mm to 0.25mm; the diameter of the central region ranges from 5mm to 9mm.

[0015] According to a first aspect of embodiments of the present application, at least part of the plurality of microlenses have different focal points, and a static local curvature corresponding to an outer contour surface of the microlens gradually changes with different distances from a geometric center thereof; the outer contour of the plurality of microlenses is consistent in shape and a coating is provided on the outer contour, and at least one microlens is a toric structure.

[0016] According to a first aspect of embodiments of the present application, the lens piece further comprises a base region composed of gaps between the plurality of microlenses, and a first intermolecular bonding form of the base region is different from a second intermolecular bonding form of the microlenses.

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

[0018] The lens piece of the optical path difference regulation lens provided by the application comprises a microlens array, a plurality of microlenses are arranged radially from inside to outside in a supermicrostructure region formed by the microlens array, a spiral part comprises a plurality of clusters of microlenses, the plurality of microlenses are not uniform lattices, the microlenses form the spiral part and a sparse region through position and size changes, the width of the spiral part also gradually changes along the extension direction, so as to be arranged according to the human eye cell arrangement characteristics of myopic patients, correspond to the specific human eye cell distribution characteristics, and the size change rule of the distribution of the plurality of clusters of microlenses can be adjusted to adapt the lens to patients with different degrees of myopia, and the optical path difference regulation of the entire lens piece can accurately adapt to the myopia correction needs of a part of specific groups of people. 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 from these drawings without creative labor.

[0020] Figure 1 is a structural schematic diagram of the lens piece provided by the embodiment of the application;

[0021] Figure 2 is a perspective view of the lens piece provided by the embodiment of the application;

[0022] Figure 3 is a structural schematic diagram of an optical path difference regulation structure lens provided by the embodiment of the application;

[0023] Figure 4 is Figure 1 is an enlarged schematic view of a in FIG. 1;

[0024] Figure 5 is Figure 1 is an enlarged schematic view of b in FIG. 1.

[0025] The drawings are as follows: the lens piece 1; the microlens 2; the substrate 3; the supermicrostructure region A; the central region B; the spiral part C; the sparse region D; the base region E. DETAILED DESCRIPTION

[0026] 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 of the 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 scope of protection of the present application.

[0027] It should be noted that, in this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such 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.

[0028] The embodiments of the present application provide an optical path difference regulation structure lens, and solve the problems of insufficient contrast control and inaccurate myopia correction of current myopia prevention lenses.

[0029] The technical solutions in the embodiments of the present application are as follows to solve the above technical problems:

[0030] 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 eye axis growth. In the related art, myopia prevention lenses are mostly 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 mostly used in contact lenses. The DIMS is a myopia prevention lens based on the peripheral defocus theory. The DIMS lens and the DISC lens rely on defocus control. The purpose of defocus control is to form myopic defocus in the periphery of the retina to offset the influence of hyperopic defocus.

[0031] However, the conventional defocus control cannot provide high-order signal modulation by using the scattering signal of incident light. The myopia prevention lenses in the related art have insufficient contrast control, which causes an unsatisfactory optical fidelity effect. The microlenses in the lenses are usually uniformly distributed, and the human eye cells are not uniformly arranged. The performance of the conventional myopia prevention lenses is not ideal, and therefore a new type of structure lens is urgently needed to meet the increasing demand for myopia prevention.

[0032] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in combination with the drawings of the specification and specific embodiments.

[0033] First, a light path difference regulation structure lens provided by the embodiments of the present application will be introduced.

[0034] The light path difference regulation structure lens provided by the embodiments of the present application, please refer to Figure 1 and Figure 2 , the light path difference regulation structure lens includes a lens piece 1, the lens piece 1 includes a microlens array, the microlens array includes a plurality of microlenses 2 arranged in sequence to form a super microstructure region A to regulate the light path difference, the inside of the super microstructure region A is provided with a central region B without microlenses 2; wherein the plurality of microlenses 2 form a spiral part C and a sparse area D by changing the position and size, the spiral part C and the sparse area D are located inside the super microstructure region A.

[0035] It can be understood that the central region B needs to ensure clear vision, the central region B corresponds to the macular region of the human eye, the circular central region B is the ideal state, there will be differences for different people, the plurality of microlenses 2 can provide two different wavelength focusing signals outside the macular region, the period distribution of the microlenses 2 is related to the biological cell arrangement of the human eye of a specific population.

[0036] Specifically, the spiral part C is an encryption area composed of a plurality of microlenses 2; the spiral part C extends in a spiral shape from inside to outside in the super microstructure region A, and the width of the spiral part C gradually increases in the direction of its own extension; the plurality of microlenses 2 form a plurality of target branches, the plurality of microlenses 2 in the target branch are spaced apart and arranged in a radial manner from inside to outside; the size of the microlenses 2 in the target branch alternately decreases and increases, and the spiral part C has a plurality of clusters of microlenses 2 from inside to outside.

[0037] In the embodiments of the present application, it can be understood that the lens piece 1 of the light path difference regulation structure lens of the present application includes a microlens array, in the super microstructure region A formed by the microlens array, the plurality of microlenses 2 are arranged in a radial manner from inside to outside, based on the focusing effect of the lens on the light, when the light passes through the microlens array, each microlens 2 focuses the light on its focal point.

[0038] The spiral part C contains a plurality of clusters of microlenses 2, the plurality of microlenses 2 are not uniform dot matrix, the microlenses 2 form the spiral part C and the sparse area D by changing the position and size, the width of the spiral part C also gradually changes along the extension direction, so as to be specifically arranged according to the cell arrangement characteristics of the myopic patient's eye, corresponding to the specific cell distribution characteristics of the human eye, by adjusting the size change law of the distribution of the plurality of clusters of microlenses 2, the lens can be adapted to patients with different degrees of myopia, and the light path difference regulation of the whole lens piece 1 can accurately adapt to the myopia correction needs of a part of specific population.

[0039] It should be noted that the spiral part C is distributed in a geometric cycle, and the mixing fluctuation caused by the spiral part C can correspond to the dynamic fluctuation effect of the fundus light signal, so that the human eye can realize the effect of dynamic optical path difference regulation under different eye positions and different incident light conditions.

[0040] In some embodiments, the spiral part C includes a plurality of first lens branches spaced apart from each other, and the spacing arrangement direction of the plurality of microlenses 2 in each first lens branch is inclined to the extension direction of the spiral part C.

[0041] In the embodiments of the present application, please refer to Figure 1 , Figure 2 and Figure 4 It can be understood that in the spiral part C, a plurality of microlenses 2 are spaced apart along the radial divergence direction from the inside to the outside of the super microstructure area A, and constitute a first lens branch belonging to the spiral part C.

[0042] In some embodiments, the sparse area D includes a plurality of second lens branches aligned with the extension direction of the first lens branch, and the first lens branch and the second lens branch constitute a target branch. Please refer to Figure 1 , Figure 2 and Figure 4 It can be understood that in the sparse area D, a plurality of microlenses 2 are spaced apart along the radial divergence direction from the inside to the outside of the super microstructure area A, and constitute a second lens branch belonging to the sparse area D, and the extension direction of the second lens branch is consistent with that of the corresponding first lens branch.

[0043] In some embodiments, the plurality of clusters of microlenses 2 correspond to a plurality of target thresholds, one target threshold corresponds to the size of the largest microlens 2 in one cluster of microlenses 2, and the plurality of target thresholds corresponding to the plurality of clusters of microlenses 2 gradually increase from the inside to the outside of the super microstructure area A.

[0044] In the embodiments of the present application, please refer to Figure 1 , Figure 2 and Figure 4 It can be understood that from the inside to the outside of the super microstructure area A, the overall size of the plurality of clusters of microlenses 2 gradually increases, and the target threshold corresponding to the largest lens size in the plurality of clusters of microlenses 2 gradually increases, so that the microlenses 2 in the super microstructure area A present a spiral distribution, and the optical path difference regulation of the plurality of microlenses 2 can correspond to the actual needs of a specific group of people, and the scattering signal of the incident light can be regulated in a targeted manner.

[0045] In one example, please refer to Figure 1 and Figure 2The spiral part C and the sparse area D respectively include a first subpart and a second subpart connected with the outer edge of the lens piece 1, and the width of the first subpart and the second subpart is limited by the size of the lens piece 1 and connected with the outer edge of the lens piece 1.

[0046] In some embodiments, referring to Figure 3 The lens piece 1 has a first side and a second side opposite along the thickness direction of the lens piece 1, the first side of the lens piece 1 is convex, and the second side of the lens piece 1 is flat, and the second side of the lens piece 1 is a two-dimensional extension surface where the end away from the first side is located. The spiral part C and the sparse area D are gradually extended from the outer edge of the central area B along the thickness direction of the lens piece 1, and extend from the first side of the lens piece 1 to the second side of the lens piece 1.

[0047] In some embodiments, referring to Figure 3 The optical path difference regulation structure lens further includes a substrate 3, the substrate 3 provides a connecting surface recessed to the inside of the substrate 3, the first side of the lens piece 1 is adjacent to the connecting surface of the substrate 3 and the width of the two is consistent; the size of the microlens 2 ranges from 0.01mm to 0.25mm; the diameter of the central area B ranges from 5mm to 9mm.

[0048] In the embodiments of the present application, it can be understood that the present application can accommodate more microlenses 2 in the unit area of the super microstructure area A by controlling the size of the microlens 2 to be in a smaller range, forming a continuous super low disturbance defocus area, and realizing high intensity optical path difference regulation.

[0049] In one example, at least part of the plurality of microlenses 2 have different focal points, and the corresponding static local curvature of the outer contour of the microlens 2 gradually changes with the distance from the geometric center thereof; the outer contours of the plurality of microlenses 2 are consistent in shape and are provided with a coating layer, and at least one microlens 2 is a toric surface structure.

[0050] In some embodiments, referring to Figure 5 The lens piece 1 further includes a base area E composed of gaps between the plurality of microlenses 2, and the first intermolecular bonding form of the base area E is different from the second intermolecular bonding form of the microlens 2. It can be understood that the intermolecular bonding forms of the corresponding materials of the base area E and the plurality of microlenses 2 are different, the resin structure of the microlens 2 is smaller and filled with metal ions or metal oxides, which is conducive to realizing regulation of the optical path.

[0051] In summary, compared with the prior art, the present application has the following beneficial effects:

[0052] 1、The microlens 2 in the application forms the spiral part C and the sparse area D through position and size change, the width of the spiral part C also gradually changes along the extension direction, to arrange specifically for the human eye cell arrangement characteristics of myopic patients, corresponding to the specific human eye cell distribution characteristics, by adjusting the size change rule of the multi-cluster microlens 2 distribution, the lens can be adapted to patients with different degrees of myopia, 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.

[0053] 2、The central area B in the application does not contain microlens 2 to ensure clear vision in the central area B, the central area B corresponds to the macular area of the human eye, the periodic distribution of the microlens 2 is related to the biological cell arrangement of the human eye of the specific population, and the multiple microlenses 2 can provide two different wavelength focusing signals outside the macular area.

[0054] 3、The multiple microlenses 2 are radially arranged from inside to outside, based on the focusing effect of the lens on light, when the light passes through the microlens array, each microlens 2 focuses the light on its focal point, the spiral part C is in geometric periodic distribution, and the mixed fluctuation brought by the spiral part C can correspond to the dynamic fluctuation effect of the fundus light signal, so that the human eye can realize the effect of dynamic optical path difference regulation under different eye positions and different incident light conditions.

[0055] The above embodiments are only used to illustrate the technical solutions of the application, but not to limit it; although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; 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. A lens with an optical path difference adjustment structure, characterized in that, The system includes a lens element (1), which includes a microlens array. The microlens array includes a plurality of microlenses (2) arranged in sequence to form an ultrastructure region (A) for optical path difference control. The ultrastructure region (A) has a central region (B) inside which does not contain the microlenses (2). Among them, the plurality of microlenses (2) form a helical part (C) and a sparse region (D) through changes in position and size. The helical part (C) and the sparse region (D) are located inside the ultrastructure region (A). The helical part (C) is a dense region composed of the plurality of microlenses (2). The helical part (C) extends spirally from the inside to the outside in the ultrastructure region (A) and the width of the helical part (C) gradually increases in the direction of its extension. The plurality of microlenses (2) constitute a plurality of target segments, wherein the plurality of microlenses (2) in the target segments are spaced apart from the inside and arranged radially; the size of the microlenses (2) in the target segments alternately decreases and increases, and the spiral portion (C) has a continuous plurality of clusters of microlenses (2) from the inside to the outside.

2. The optical path difference adjustment structure lens as described in claim 1, characterized in that, The spiral section (C) includes a plurality of adjacent first lens segments, wherein the spacing of the plurality of microlenses (2) in each first lens segment is inclined to the extension direction of the spiral section (C).

3. The optical path difference adjustment structure lens as described in claim 2, characterized in that, The sparse region (D) includes a plurality of second lens segments aligned with the extension direction of the first lens segment, the first lens segment and the second lens segments constituting the target segment.

4. The optical path difference adjustment structure lens as described in claim 1, characterized in that, The multiple clusters of microlenses (2) correspond to multiple target thresholds, and each target threshold corresponds to the size of the largest microlens (2) in a cluster of microlenses (2). The multiple target thresholds corresponding to the multiple clusters of microlenses (2) gradually increase from the inside to the outside of the ultrastructure region (A).

5. The optical path difference adjustment structure lens as described in any one of claims 1-4, characterized in that, The spiral section (C) and the sparse region (D) respectively include a first sub-section and a second sub-section that are connected to the outer edge of the lens element (1). The width of the first sub-section and the second sub-section is limited by the size of the lens element (1) and is connected to the outer edge of the lens element (1).

6. The optical path difference adjustment structure lens as described in claim 1, characterized in that, The lens element (1) has a first side and a second side opposite to each other along its own thickness direction. The first side of the lens element (1) is convex and the second side is planar. The second side of the lens element (1) is a two-dimensional extension surface where the end away from the first side is located.

7. The optical path difference adjustment structure lens as described in claim 6, characterized in that, Both the spiral portion (C) and the sparse region (D) gradually extend from the outer edge of the central region (B) along the thickness direction of the lens element (1) and extend from the first side of the lens element (1) to the second side of the lens element (1).

8. The optical path difference adjustment structure lens as described in claim 6, characterized in that, It also includes a substrate (3) that provides a connecting surface recessed inwards, the first side of the lens element (1) being adjacent to the connecting surface of the substrate (3) and both having the same size; the size range of the microlens (2) is 0.01mm-0.25mm; the diameter range of the central region (B) is 5mm-9mm.

9. The optical path difference adjustment structure lens as described in claim 1, characterized in that, At least some of the microlenses (2) have different focal points, and the static local curvature of the outer contour surface of the microlens (2) gradually changes with the distance from its own geometric center; the outer contours of the microlenses (2) are consistent and coated, and at least one of the microlenses (2) has a complex surface structure.

10. The optical path difference adjustment structure lens as described in claim 9, characterized in that, The lens element (1) further includes a base region (E), which is composed of the gaps between the plurality of microlenses (2). The first intermolecular bonding form of the base region (E) is different from the second intermolecular bonding form of the microlenses (2).

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