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, and the optical path difference regulation and control structure lens comprises a substrate and a lens part. The substrate provides a connecting surface which is sunken towards the inner side of the substrate; the lens part is adjacent to the connecting surface of the substrate, the lens part comprises a central area and an ultrastructure area located on the outer side of the central area, and the ultrastructure area comprises a lens array composed of a plurality of microlenses which are different in size and have different focuses; the outer contour of the central area is composed of a plurality of sections, and the size of each micro lens is in positive correlation with the distance from the corresponding section, so that the size change of the micro lenses corresponds to the shape of the outer contour of the central area. In the breadth of the ultrastructure area, the optical path difference regulation corresponds to the specific form of the central area and further corresponds to the specific human eye cell distribution characteristics, so that the optical path difference regulation effect of the whole lens part can accurately meet the myopia correction requirements of specific people.

Description

Technical Field

[0001] This application relates to the field of optical lens technology, specifically to a lens with an optical path difference control structure. Background Technology

[0002] Myopia control lenses, through special optical design, focus peripheral light at specific positions in front of or behind the retina, altering retinal growth signals and slowing axial elongation. Among related technologies, myopia control lenses are mostly developed based on DOT, DIMS, and DISC technologies. DOT lenses are developed based on the theory of retinal contrast signals; DISC is a soft corneal contact technology primarily used in contact lenses; and DIMS is a myopia control lens based on peripheral defocus theory. Both DIMS and DISC lenses rely on defocus control. Insufficient contrast control in these myopia control lenses leads to suboptimal optical fidelity. While microlenses in these lenses are typically uniformly distributed, human eye cells are not uniformly arranged. Conventional myopia control lenses are therefore insufficient in performance, necessitating the development of a novel structural lens to meet the growing demand for myopia control. Utility Model Content

[0003] To address the shortcomings of existing technologies, this application provides a lens with an optical path difference control structure, which solves the problems of insufficient contrast control and inaccurate myopia correction in current myopia control lenses.

[0004] To achieve the above objectives, this application provides the following technical solution:

[0005] In a first aspect, embodiments of this application provide an optical path difference control structure lens, which includes a substrate and a lens portion; the substrate provides a connecting surface recessed inward; the lens portion is adjacent to the connecting surface of the substrate, and the lens portion includes a central region and an ultrastructural region located outside the central region, the ultrastructural region including a lens array composed of multiple microlenses of different sizes and with different focal points, so as to change the scattering signal of the incident light and provide higher-order signal modulation.

[0006] Specifically, the outer contour of the central region is composed of multiple segments. The size of the microlens is positively correlated with the distance from the corresponding segment so that the size change of the multiple microlenses corresponds to the shape of the outer contour of the central region. The multiple microlenses constitute multiple lens groups. The multiple microlenses in each lens group are arranged and extended from the inside to the outside of the ultrastructure region at intervals, and the corresponding extension axis is curved. The microlenses in two adjacent lens groups are staggered and adjacent.

[0007] According to a first aspect of the embodiments of this application, each lens group has multiple microlenses corresponding to multiple size levels, with some size levels corresponding to parts of the multiple microlenses. The size level corresponding to each microlens is positively correlated with the distance from the central region to form a gradient refractive index, so as to provide different optical path difference control amounts in different areas within the microstructure region.

[0008] According to a first aspect of the embodiments of this application, two adjacent segments form a first corner, and the microstructure region has a plurality of second corners corresponding to the first corner, wherein the size of the microlens in the second corner differs from the size of the microlens in the adjacent region by at least one size order.

[0009] According to a first aspect of the embodiments of this application, a plurality of lens groups are arranged in pairs, and the first distance between two lens groups in the same pair is smaller than the second distance from the adjacent pair of lens groups; both the first distance and the second distance gradually increase from the inside to the outside of the microstructure region.

[0010] According to a first aspect of the embodiments of this application, the central region is not provided with microlenses and the outer contour includes sixteen segments, one side of the lens portion is convex to match the connection surface of the substrate, and at least one microlens is a tortuous surface structure.

[0011] According to a first aspect of the embodiments of this application, the ultrastructure region further includes a substrate region, which is composed of gaps between multiple microlenses. The first intermolecular bonding form of the substrate region is different from the second intermolecular bonding form of the microlenses to achieve optical path difference control.

[0012] According to a first aspect of the embodiments of this application, the ratio of the sum of the areas of a plurality of microlenses to the area of ​​the substrate region is the fill rate of the ultrastructure region, and the fill rate is set in the range of 0.07-0.25.

[0013] According to a first aspect of the embodiments of this application, the size range of the microlens is 0.01mm-0.25mm, the size range of the central region is 5mm-9mm, and the size range of the ultrastructure region is 30mm-70mm.

[0014] According to a first aspect of the embodiments of this application, the defocus amount De of the microlens satisfies: +4.50D≤De≤+10.00D, where D represents diopter and +10.00D is the extreme defocus; the microlens reaches the extreme defocus within an 8° field of view, and the defocus amount of the microlens is positively correlated with the field of view.

[0015] According to a first aspect of the embodiments of this application, the microlens is one of a spherical mirror, an aspherical mirror, an asymmetric freeform mirror, a cylindrical mirror, a parabolic mirror, a conical mirror, and an asymmetric conical mirror.

[0016] This application provides a lens with an optical path difference adjustment structure. Compared with the prior art, it has the following advantages:

[0017] The optical path difference control lens of this application has a lens portion disposed on one side of the substrate. This lens portion includes a central region and an ultrastructural region located outside the central region. The ultrastructural region is equipped with a lens array consisting of multiple microlenses of different sizes and with different focal points to achieve optical path difference control. In addition to changing the focal point, the optical path difference also changes the scattering signal of the incident light, providing higher-order signal modulation, thereby achieving ideal contrast control to improve optical fidelity. This application divides the outer contour of the central region into multiple segments, thus giving the central region a specific shape. The size change of the microlenses is positively correlated with the distance from the segments, allowing multiple microlenses to change size based on the outer contour shape of the central region. Within the entire ultrastructural region, the optical path difference control corresponds to the specific shape of the central region, and thus corresponds to the specific distribution characteristics of human eye cells. This allows the optical path difference control effect of the entire lens portion to accurately adapt to the myopia correction needs of specific groups of people. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the optical path difference adjustment structure lens provided in an embodiment of this application;

[0020] Figure 2 This is a schematic diagram of the lens section provided in an embodiment of this application;

[0021] Figure 3 yes Figure 2 A 3D view at point a;

[0022] Figure 4 yes Figure 2 Plan view at point a;

[0023] Figure 5 yes Figure 2 Enlarged diagram of point b in the middle.

[0024] Reference numerals: 1. Substrate; 2. Lens; 3. Microlens; 4. Section; A. Central region; B. Microstructure region; C. First corner; D. Second corner. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0027] This application provides an optical path difference control structure lens, which solves the problems of insufficient contrast control and inaccurate myopia correction in current myopia control lenses.

[0028] The technical solution in this application is to solve the above-mentioned technical problems, and the general idea is as follows:

[0029] Myopia control lenses utilize special optical designs to focus peripheral light at specific locations in front of or behind the retina, altering retinal growth signals and slowing axial elongation. Among related technologies, myopia control lenses are primarily developed based on DOT, DIMS, and DISC technologies. DOT lenses are developed based on the theory of retinal contrast signals; DISC is a soft corneal contact technology commonly used in contact lenses; and DIMS lenses are based on peripheral defocus theory. Both DIMS and DISC lenses rely on defocus control.

[0030] In myopia control, wearing glasses is a common treatment method. By wearing eyeglasses or contact lenses, astigmatism is corrected, allowing light to focus accurately on the retina, thereby improving vision. However, myopia control lenses in related technologies often suffer from insufficient contrast control, resulting in suboptimal optical fidelity. Furthermore, the microlenses within these lenses are typically uniformly distributed, while human eye cells are not uniformly arranged. Conventional myopia control lenses do not perform satisfactorily, thus necessitating the development of a novel structural lens to meet the growing demand for myopia control.

[0031] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0032] The following is a description of an optical path difference control structure lens provided in the embodiments of this application.

[0033] Please refer to the optical path difference adjustment structure lens provided in this application embodiment. Figures 1-5 The optical path difference control structure lens includes a substrate 1 and a lens portion 2; the substrate 1 provides a connecting surface that is recessed inward; the lens portion 2 is adjacent to the connecting surface of the substrate 1, and the lens portion 2 includes a central region A and an ultrastructure region B located outside the central region A. The ultrastructure region B includes a lens array composed of multiple microlenses 3 of different sizes and different focal points, so as to change the scattering signal of the incident light and provide higher-order signal modulation.

[0034] Specifically, the outer contour of the central region A is composed of multiple segments 4. The size of the microlens 3 is positively correlated with the distance from the corresponding segment 4 so that the size change of the multiple microlenses 3 corresponds to the shape of the outer contour of the central region A. The multiple microlenses 3 constitute multiple lens groups. The multiple microlenses 3 in each lens group extend from the inside to the outside of the ultrastructure region B at intervals and the corresponding extension axis is curved. The microlenses 3 in two adjacent lens groups are staggered and adjacent.

[0035] In the embodiments of this application, it can be understood that the optical path difference control lens of this application has a lens part 2 provided on one side of the substrate 1. The lens part 2 includes a central region A and an ultrastructure region B located outside the central region A. The ultrastructure region B is provided with a lens array composed of multiple microlenses 3 of different sizes and different focal points to realize optical path difference control. In addition to changing the focal point, the optical path difference can also change the scattering signal of the incident light, provide high-order signal modulation, and thus achieve ideal contrast control to improve the optical fidelity effect.

[0036] Furthermore, this application sets the outer contour of the central region A into multiple segments 4, thereby giving the central region A a specific shape. In this application, the size change of the microlens 3 is positively correlated with the distance from the segment 4, so that the size change pattern of the multiple microlenses 3 corresponds to the outer contour shape of the central region A. This allows the optical path difference adjustment within the entire microstructure region B to correspond to the specific shape of the central region A, and thus to the specific distribution characteristics of human eye cells. This enables the optical path difference adjustment effect of the entire lens part 2 to accurately adapt to the myopia correction needs of specific groups of people.

[0037] In some embodiments, please refer to Figures 2-4Each lens group has multiple microlenses 3 corresponding to multiple size levels. Some size levels correspond to parts of multiple microlenses 3. The size level corresponding to each microlens 3 is positively correlated with the distance from the central region A to form a gradient refractive index, so as to provide different optical path difference control amounts in different areas within the ultrastructure region B.

[0038] In the embodiments of this application, it can be understood that the size of the multiple microlenses 3 gradually changes from the inner side to the outer side of the ultrastructure region B; since the size level of each microlens 3 is positively correlated with the distance from the central region A, the overall shape of the microlenses 3 at the same size level within the ultrastructure region B can correspond to the outer contour of the set central region A; in other words, the array arrangement of the multiple microlenses 3 can correspond to the distribution characteristics of human eye cells in a specific population, and the optical path difference adjustment of the multiple microlenses 3 corresponds to the myopia correction needs of a specific population, thereby specifically changing the scattering signal of the incident light and providing high-order signal modulation.

[0039] In some embodiments, please refer to Figure 3 and Figure 4 Two adjacent segments 4 form a first corner C. The ultrastructure region B has multiple second corners D corresponding to the first corner C. The size of the microlens 3 located in the second corner D differs from the size of the microlens 3 in the adjacent region by at least one size order.

[0040] In the embodiments of this application, it can be understood that the distribution characteristics of the first corner C are directly related to the outer contour characteristics of the central region A. The number and position of the second corner D correspond to those of the first corner C. Furthermore, the microlens 3 under the second corner D will have a significant difference in size from the microlens 3 in the adjacent region, thereby controlling and realizing the gradient refractive index and providing different optical path difference control amounts in different areas within the ultrastructure region B.

[0041] It should be noted that the optical path difference control amount indirectly corresponds to the outer contour characteristics of the central region A. Therefore, the optical path difference adjustment of this application can correspond to the macular region characteristics of a specific population, thereby enabling targeted myopia correction.

[0042] In one example, please refer to Figure 4 Multiple lens groups are arranged in pairs, and the first distance between two lens groups in the same pair is smaller than the second distance between them and the other pair of lens groups adjacent to each other; both the first distance and the second distance gradually increase from the inside to the outside of the microstructure region B.

[0043] In some embodiments, please refer to Figures 2-4 The central region A is not provided with microlenses 3 and the outer contour includes sixteen segments 4. One side of the lens part 2 is convex to match the connection surface of the substrate 1. At least one microlens 3 has a tortuous surface structure.

[0044] In the embodiments of this application, it is understood that the central region A needs to ensure clear vision as required. The central region A corresponds to the macula of the human eye. A circular central region A is the ideal state, but it will vary for different people. Multiple microlenses 3 can provide two different wavelengths of focusing signals outside the macula. The periodic distribution of the microlenses 3 is related to the arrangement of human eye biological cells in a specific person. For example, when the central region A is arranged in a hexagonal shape, the lens has a better myopia correction effect for people with low astigmatism.

[0045] In some embodiments, please refer to Figure 5 The ultrastructure region B also includes a substrate region, which is composed of gaps between multiple microlenses 3. The first intermolecular bonding form of the substrate region is different from the second intermolecular bonding form of the microlenses 3 to achieve optical path difference control.

[0046] In the embodiments of this application, it is understood that the substrate region and the microlens 3 have different material transmittance and different intermolecular bonding forms. The resin structure of the microlens 3 is smaller and filled with metal ions or metal oxides, thereby achieving control over the optical path. In addition, the ratio of the sum of the areas of the multiple microlenses 3 to the area of ​​the substrate region is the filling rate of the ultrastructure region B. For example, the filling rate is set in the range of 0.07-0.25.

[0047] In some embodiments, the size range of the microlens 3 is 0.01mm-0.25mm, the size range of the central region A is 5mm-9mm, and the size range of the ultrastructure region B is 30mm-70mm.

[0048] In the embodiments of this application, it is understood that the microlens size of conventional myopia control lenses is relatively large and is usually 0.8mm-2mm; by significantly reducing the size of the microlens 3, more microlenses 3 can be accommodated per unit area, thereby achieving high-intensity optical path difference control, and by setting dense microlenses 3, a continuous ultra-low disturbance defocus zone can be formed.

[0049] In some embodiments, the defocus amount De of the microlens 3 satisfies: +4.50D ≤ De ≤ +10.00D, where D represents diopter and +10.00D is the extreme defocus; the microlens 3 achieves extreme defocus within an 8° field of view, and the defocus amount of the microlens 3 is positively correlated with the field of view. It can be understood that by setting multiple microlenses 3, the propagation and scattering characteristics of light by the lens can be changed, thereby adjusting the contrast of light entering the eye to achieve specific visual effects and physiological influences.

[0050] In one example, the microlens 3 is one of a spherical mirror, an aspherical mirror, an asymmetric freeform mirror, a cylindrical mirror, a parabolic mirror, a conical mirror, and an asymmetric conical mirror.

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

[0052] 1. The optical path difference control lens of this application has a lens part 2 provided on one side of the substrate 1. The lens part 2 includes a central region A and an ultrastructure region B located outside the central region A. The ultrastructure region B is provided with a lens array composed of multiple microlenses 3 of different sizes and different focal points to realize optical path difference control. In addition to changing the focal point, the optical path difference can also change the scattering signal of the incident light, provide high-order signal modulation, and thus achieve ideal contrast control to improve the optical fidelity effect.

[0053] 2. In this application, the outer contour of the central region A is divided into multiple segments 4, thereby giving the central region A a specific shape. In this application, the size change of the microlens 3 is positively correlated with the distance from the segment 4. The size change pattern of the multiple microlenses 3 corresponds to the outer contour shape of the central region A. Within the entire area of ​​the ultra-microstructure region B, the optical path difference adjustment corresponds to the specific shape of the central region A, and thus corresponds to the specific distribution characteristics of human eye cells. This allows the optical path difference adjustment effect of the entire lens part 2 to accurately adapt to the myopia correction needs of specific groups of people.

[0054] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lens with an optical path difference adjustment structure, characterized in that, include: A substrate (1) having a connecting surface recessed inwards; and Lens section (2), the lens section (2) is adjacent to the connecting surface of the substrate (1), the lens section (2) includes a central region (A) and an ultrastructure region (B) located outside the central region (A), the ultrastructure region (B) includes a lens array composed of multiple microlenses (3) of different sizes and different focal points, so as to change the scattering signal of the incident light and provide higher-order signal modulation; The outer contour of the central region (A) is composed of multiple segments (4), and the size of the microlens (3) is positively correlated with the distance from the corresponding segment (4) so ​​that the size change of the multiple microlenses (3) corresponds to the outer contour shape of the central region (A); The multiple microlenses (3) constitute multiple lens groups. The multiple microlenses (3) in each lens group are arranged and extend from the inside to the outside of the ultrastructure region (B) at intervals and the corresponding extension axes are curved. The microlenses (3) in two adjacent lens groups are staggered and adjacent.

2. The optical path difference adjustment structure lens as described in claim 1, characterized in that, Each of the multiple microlenses (3) in each lens group corresponds to multiple size levels, some of the size levels correspond to a portion of the multiple microlenses (3), and the size level corresponding to each microlens (3) is positively correlated with the distance from the central region (A) to form a gradient refractive index, so as to provide different optical path difference control amounts in different areas within the microstructure region (B).

3. The optical path difference adjustment structure lens as described in claim 2, characterized in that, Two adjacent segments (4) form a first corner (C), and the microstructure region (B) has a plurality of second corners (D) corresponding to the first corner (C). The size of the microlens (3) in the second corner (D) differs from the size of the microlens (3) in the adjacent region by at least one size level.

4. The optical path difference adjustment structure lens as described in claim 1, characterized in that, The plurality of lens groups are arranged in pairs, and the first distance between two lens groups in the same pair is smaller than the second distance from the other pair of lens groups adjacent to each other; both the first distance and the second distance gradually increase from the inside to the outside of the ultrastructure region (B).

5. The optical path difference adjustment structure lens as described in any one of claims 1-4, characterized in that, The central region (A) is not provided with the microlens (3) and the outer contour includes sixteen segments (4). One side of the lens portion (2) is convex to match the connecting surface of the substrate (1). At least one of the microlenses (3) has a tortuous surface structure.

6. The optical path difference adjustment structure lens as described in any one of claims 1-4, characterized in that, The ultrastructure region (B) also includes a substrate region, which is composed of the gaps between the plurality of microlenses (3). The first intermolecular bonding form of the substrate region is different from the second intermolecular bonding form of the microlenses (3) to achieve optical path difference control.

7. The optical path difference adjustment structure lens as described in claim 6, characterized in that, The ratio of the sum of the areas of the plurality of microlenses (3) to the area of ​​the substrate region is the filling rate of the ultrastructure region (B), and the filling rate is set in the range of 0.07-0.

25.

8. The optical path difference adjustment structure lens as described in any one of claims 1-4, characterized in that, The size range of the microlens (3) is 0.01mm-0.25mm, the size range of the central region (A) is 5mm-9mm, and the size range of the ultra-microstructure region (B) is 30mm-70mm.

9. The optical path difference adjustment structure lens as described in any one of claims 1-4, characterized in that, The defocus amount De of the microlens (3) satisfies: +4.50D≤De≤+10.00D, where D represents diopter and +10.00D is the extreme defocus; the microlens (3) reaches the extreme defocus within an 8° field of view, and the defocus amount of the microlens (3) is positively correlated with the field of view.

10. The optical path difference adjustment structure lens as described in claim 9, characterized in that, The microlens (3) is one of a spherical mirror, an aspherical mirror, an asymmetric freeform mirror, a cylindrical mirror, a parabolic mirror, a conical mirror, and an asymmetric conical mirror.

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