Optical elements and imaging intervention devices having them
By setting up a complex light field modulation region and a diffraction grating layer on the lens substrate, the problem of weakened effectiveness of existing myopia control lenses has been solved, achieving a more effective myopia control effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI WANMING OPTICAL
- Filing Date
- 2025-07-25
- Publication Date
- 2026-07-03
AI Technical Summary
The defocus signals of existing myopia control lenses are highly regular, causing the human brain to gradually adapt and the control effect to gradually weaken.
An optical element is designed, comprising a lens substrate, a central visual region, and a light field modulation region. By utilizing first and second diffraction grating layers and a scattering layer, light undergoes complex diffraction and scattering within the light field modulation region, stimulating the genome within rod cells to regulate axial growth.
Through complex optical path transmission, it reduces the human eye's adaptability to regular light, slows down the growth of the eye axis, and regulates gene expression to delay the development of myopia.
Smart Images
Figure CN224457166U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of optical components technology, and in particular to an optical component and an imaging intervention device having the same. Background Technology
[0002] Myopia has become an increasingly serious problem in the global vision health field. For a long time, the market for myopia control lenses has been dominated by products that utilize microlens defocus technology. This technology creates a defocused area by designing a microlens array on the lens, thereby slowing the increase in the axial length of the eye and controlling the progression of myopia. However, the defocus signal of this technology is highly regular, and the control method and the path of light after control are relatively simple. This results in a highly regular defocus signal, and over time, the human brain gradually adapts to this regular defocus pattern, leading to a gradual weakening of its control effect. Summary of the Invention
[0003] This application provides an optical element and an imaging intervention device having the same, which enables the transmission of light paths to be more complex and to better delay the growth of the axial length of the eye.
[0004] This application provides an optical element including a lens substrate. A first surface and a second surface opposite to the first surface are formed on the lens substrate. A central visual region and a light field control region are formed on the lens substrate. The central visual region is formed in the middle of the lens substrate. The light field control region is arranged around the central visual region. A first diffraction grating layer and a second diffraction grating layer are disposed in the light field control region. The first diffraction grating layer and the second diffraction grating layer are used to diffract light. The first diffraction grating layer is disposed on the first surface or the second surface of the lens substrate, and the second diffraction grating layer is disposed in the lens substrate.
[0005] Furthermore, the material of the lens substrate is any one of resin, acrylic, PC, MR-8, Trivex, CR-39, and PMMA.
[0006] Furthermore, the refractive index of the central visual region is one of 1.50, 1.56, 1.591, 1.60, 1.67, 1.71, 1.74, and 1.76.
[0007] Furthermore, the central visual region can be any one of a circle, an ellipse, or a polygon.
[0008] Furthermore, the distance between the geometric center of the central visual region and the geometric center of the lens substrate does not exceed 50mm.
[0009] Furthermore, the geometric center of the central visual region and the geometric center of the lens substrate coincide with each other.
[0010] Furthermore, the maximum span of the central visual area is 1-15mm.
[0011] Furthermore, the first diffraction grating layer includes a plurality of grooves, each groove being continuously arranged around the central visual region and connected end to end, and the plurality of grooves being spaced apart from the direction close to the central visual region to the direction away from the central visual region.
[0012] Furthermore, the plurality of grooves are arranged in the form of concentric annular rings, non-concentric annular rings, free curves, or polygons.
[0013] Furthermore, the second diffraction grating layer includes a plurality of cavities, each cavity being continuously arranged around the central visual region and connected end to end, and the plurality of cavities being spaced apart from the direction close to the central visual region to the direction away from the central visual region.
[0014] Furthermore, the multiple cavities are not located on the same plane, and the cavities are in the form of concentric annular rings, non-concentric annular rings, free curves, or polygons.
[0015] Furthermore, multiple scattering points are formed on the scattering layer, each of which is an independent protrusion or depression.
[0016] Furthermore, in the thickness direction of the lens substrate, the distance between the second diffraction grating layer and the first diffraction grating layer, and between the second diffraction grating layer and the scattering layer, is less than 2 mm.
[0017] Furthermore, on the first and / or second surfaces of the light field modulation region, the curvature of the lens substrate varies at different locations.
[0018] Furthermore, when the curvature of the lens substrate on the first surface is different, the radius of curvature gradually decreases from near the central visual region to far away from the central visual region; when the curvature of the lens substrate on the second surface is different, the radius of curvature gradually increases from near the central visual region to far away from the central visual region.
[0019] This application also provides an imaging intervention device, including the aforementioned optical elements.
[0020] In summary, in this application, by setting the first and second diffraction grating layers, light rays passing through the lens substrate from the light field control region at different angles can all be diffracted within the first and / or second diffraction grating layers, making the optical path within the light field control region more complex and reducing the human eye's adaptability to regular light. Furthermore, the complex optical field can stimulate specific genomes or other visual neurons within the rod cells, thereby regulating gene expression and transmitting signals to the brain, optic nerve, retina, choroid, and sclera via the optic nerve system to delay axial elongation. Furthermore, the scattering layer and the different curvatures at various points on the lens substrate within the light field control region further complicate the optical path.
[0021] The above description is merely an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description
[0022] Figure 1 The diagram shown is a structural schematic of the first surface of the optical element provided in an embodiment of this application.
[0023] Figure 2 The diagram shown is a structural schematic of the second surface of the optical element provided in an embodiment of this application.
[0024] Figure 3 The figure shown is a cross-sectional structural diagram of the optical element provided in an embodiment of this application. Detailed Implementation
[0025] To further illustrate the technical means and effects adopted by this application in order to achieve the intended purpose, the following detailed description of this application is provided in conjunction with the accompanying drawings and preferred embodiments.
[0026] This application provides an optical element and an imaging intervention device having the same, which enables the transmission of light paths to be more complex and to better delay the growth of the axial length of the eye.
[0027] like Figures 1 to 3As shown, the optical element provided in this embodiment includes a lens substrate 10. The lens substrate 10 has a radial direction and a thickness direction perpendicular to the radial direction. In the thickness direction, the lens substrate 10 has a first surface 111 and a second surface 112 disposed opposite to the first surface 111. A central visual region 12 and a light field control region 13 are formed on the lens substrate 10. The central visual region 12 is formed in the middle of the lens substrate 10, and the light field control region 13 is disposed around the central visual region 12 along the radial direction of the lens substrate 10. The central visual region 12 is a normal visible region, which may have a certain curvature to refract light to a limited extent, or it may be a plane.
[0028] A first diffraction grating layer 131 and a second diffraction grating layer 132 are provided in the light field control region 13. When light passes through the first diffraction grating layer 131 and / or the second diffraction grating layer 132, diffraction will occur. The first diffraction grating layer 131 is provided on the first surface 111 or the second surface 112 of the lens substrate 10, and the second diffraction grating layer 132 is provided inside the lens substrate 10.
[0029] In this embodiment, by setting the first diffraction grating layer 131 and the second diffraction grating layer 132, when light passes through the lens substrate 10 from the light field control region 13 at different angles, it can be diffracted in the first diffraction grating layer 131 and / or the second diffraction grating layer 132, making the light path in the light field control region 13 more complex and reducing the human eye's adaptability to regular light. Furthermore, the complex light field can stimulate specific genomes or other visual neurons in the rod cells, thereby regulating gene expression and transmitting signals to the brain, optic nerve, retina, choroid, sclera, etc., through the optic nerve system to delay the growth of the axial length of the eye.
[0030] Furthermore, in this embodiment, the central visual region 12 can be any one of a circle, an ellipse, or a polygon. The distance between the geometric center of the central visual region 12 and the geometric center of the lens substrate 10 does not exceed 50mm. Preferably, the geometric center of the central visual region 12 and the geometric center of the lens substrate 10 coincide to ensure the accuracy of the curvature of the central visual region 12. The maximum span of the central visual region 12 is 1-15mm.
[0031] In this embodiment, the material of the lens substrate 10 can be any one of resin, acrylic, PC, MR-8, Trivex, CR-39, and PMMA.
[0032] In the central visual region 12, the refractive index can be one of 1.50, 1.56, 1.591, 1.60, 1.67, 1.71, 1.74, or 1.76.
[0033] Furthermore, in this embodiment, the span of the light field control region 13, that is, the distance between the outer edge of the light field control region 13 and the inner edge of the light field control region 13, is 15-75mm.
[0034] Please refer to Figure 1 and Figure 3 As shown, in this embodiment, the first diffraction grating layer 131 can be formed by multiple grooves, each groove being continuously arranged around the central visual region 12 and connected end to end; the multiple grooves are spaced apart from the direction close to the central visual region 12 to the direction far away from the central visual region 12. Preferably, the multiple grooves are arranged in a concentric ring. In other embodiments, they can also be non-concentric ring free curves or polygons.
[0035] When light enters a groove, multiple grooves can form a grating structure to diffract the light.
[0036] In this embodiment, the first diffraction grating layer 131 can achieve a diffraction effect by controlling the spacing between adjacent grooves. The depth and width of each groove can be 500 nm to 1 mm. The distance between two adjacent grooves can be 500 nm to 1 mm.
[0037] The second diffraction grating layer 132 can be formed within the lens substrate 10 by means of laser engraving or other methods. In this embodiment, it can be multiple cavities, each cavity being continuously arranged around the central visual region 12 and connected end to end; the multiple cavities are spaced apart from the direction closest to the central visual region 12 to the direction furthest from the central visual region 12. Similarly, preferably, the multiple cavities are arranged in a concentric ring. It can be understood that in other embodiments, each connected cavity can be a non-concentric ring, a free curve, or a polygon.
[0038] Similarly, the spacing between adjacent cavities can be controlled to give the second diffraction grating layer 132 a diffraction effect. The height and width of each cavity can be 500 nm to 1 mm. The distance between two adjacent cavities can be 500 nm to 1 mm.
[0039] The first diffraction grating layer 131 and the second diffraction grating layer 132 can promote each other. When the first diffraction grating layer 131 is located on the light-incident surface side of the lens substrate 10, that is, on the first surface 111, light can first pass through the first diffraction grating layer 131 and enter the interior of the lens substrate 10. When passing through the first diffraction grating layer 131, some light will be diffracted. Since the lens substrate 10 is transparent, another part of the light will directly enter the interior of the lens substrate 10. This part of the light can also be diffracted when passing through the second diffraction grating layer 132, so as to make the transmission of light path more diversified.
[0040] In this embodiment, the multiple cavities of the second diffraction grating layer 132 inside the lens substrate 10 may not be arranged on a single plane, but may be arranged in a curved or wavy manner.
[0041] like Figure 2 and Figure 3 As shown, further, in this embodiment, a scattering layer 133 is also provided on the lens substrate 10, and the scattering layer 133 is disposed on the other surface of the lens substrate 10 opposite to the first diffraction grating layer 131. In this embodiment, the first diffraction grating layer 131 is disposed on the first surface 111 of the lens substrate 10, and correspondingly, the scattering layer 133 is disposed on the second surface 112 of the lens substrate 10. When light passes through the scattering layer 133, the light will be scattered by the scattering layer 133.
[0042] By setting up the first diffraction grating layer 131, the second diffraction grating layer 132 and the scattering layer 133, the diffraction and scattering of light can be combined to make the transmission of light paths more diversified.
[0043] In this embodiment, multiple scattering points are formed on the scattering layer 133. These scattering points can be multiple independent protrusions or depressions, and can be circular, polygonal, free-form, etc. The distance between two adjacent scattering points is less than 1 mm.
[0044] In this embodiment, the distance between the second diffraction grating layer 132 and the first diffraction grating layer 131 or the scattering layer 133 in the thickness direction is less than 2 mm.
[0045] Furthermore, on the first surface 111 and / or the second surface 112 of the light field control region 13, the curvature of the lens substrate 10 is different at different locations. That is, when light passes through the lens substrate 10 on the light field control region 13, its gradual curvature will cause gradient desaturation of the light.
[0046] The above settings can further complicate the optical transmission path.
[0047] More specifically, when the curvature of the lens substrate 10 in the light field modulation region 13 on the first surface 111 is different, the radius of curvature gradually decreases from near the central visual region 12 to far away from the central visual region 12.
[0048] When the curvature of the lens substrate 10 in the light field modulation region 13 on the second surface 112 is different, the radius of curvature gradually increases from near the central visual region 12 to far away from the central visual region 12.
[0049] In other words, when fabricating the optical element, the curvature of each part of the light field control region 13 is made different, and then the first diffraction grating layer 131 and the scattering layer 133 are formed on the surface of the light field control region 13.
[0050] In summary, in this application, by setting the first diffraction grating layer 131 and the second diffraction grating layer 132, light rays passing through the lens substrate 10 from the light field control region 13 at different angles can all be diffracted within the first diffraction grating layer 131 and / or the second diffraction grating layer 132, making the optical path within the light field control region 13 more complex and reducing the human eye's adaptability to regular light. Furthermore, the complex optical field can stimulate specific genomes or other visual neurons within the rod cells, thereby regulating gene expression and transmitting signals to the brain, optic nerve, retina, choroid, sclera, etc., to delay axial elongation via the optic nerve system. Furthermore, the scattering layer 133 and the different curvatures at various locations on the lens substrate 10 in the light field control region 13 can further complicate the optical path.
[0051] This application also provides an imaging intervention device, including the aforementioned optical elements. The imaging intervention device includes, but is not limited to, eyeglasses. For other technical features of the imaging intervention device, please refer to the prior art, which will not be repeated here.
[0052] The above description is merely a preferred embodiment of this application and is not intended to limit this application in any way. Although this application has disclosed the preferred embodiment as above, it is not intended to limit this application. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the technical solution of this application. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.
Claims
1. An optical element comprising a lens base on which a first surface and a second surface disposed opposite the first surface are formed, characterized by: A central visual region and a light field control region are formed on the lens substrate. The central visual region is formed in the middle of the lens substrate, and the light field control region is arranged around the central visual region. A first diffraction grating layer and a second diffraction grating layer are disposed in the light field control region. The first diffraction grating layer and the second diffraction grating layer are used to diffract light. The first diffraction grating layer is disposed on a first surface or a second surface of the lens substrate, and the second diffraction grating layer is disposed in the lens substrate.
2. The optical element of claim 1, wherein: Includes at least one of the following: The material of the lens substrate is any one of resin, acrylic, PC, MR-8, Trivex, CR-39, and PMMA; Alternatively, the refractive index of the central visual region may be one of 1.50, 1.56, 1.591, 1.60, 1.67, 1.71, 1.74, or 1.
76.
3. The optical element of claim 1, wherein: Includes at least one of the following, The central visual region can be any one of a circle, an ellipse, or a polygon; The distance between the geometric center of the central visual region and the geometric center of the lens substrate shall not exceed 50 mm; The geometric center of the central visual region and the geometric center of the lens substrate coincide with each other. Alternatively, the maximum span of the central visual area is 1-15mm.
4. The optical element of claim 1, wherein: The first diffraction grating layer includes a plurality of grooves, each groove being continuously arranged around the central visual region and connected end to end, and the plurality of grooves being spaced apart from the direction close to the central visual region to the direction away from the central visual region.
5. The optical element of claim 4, wherein: The plurality of grooves are arranged in the form of concentric rings, non-concentric rings, free curves, or polygons.
6. The optical element of claim 1, wherein: The second diffraction grating layer includes a plurality of cavities, each cavity being continuously arranged around the central visual region and connected end to end, and the plurality of cavities being spaced apart from the direction close to the central visual region to the direction away from the central visual region.
7. The optical element of claim 6, wherein: The cavities are not located on the same plane, and the cavities are in the form of concentric annular rings, non-concentric annular rings, free curves, or polygons.
8. The optical element of claim 1, wherein: A scattering layer is also provided on the lens substrate, and the scattering layer is disposed on another surface of the lens substrate opposite to the first diffraction grating layer.
9. The optical element according to claim 8, characterized in that: The scattering layer has multiple scattering points, each of which is an independent protrusion or depression.
10. The optical element of claim 9, wherein: In the thickness direction of the lens substrate, the distance between the second diffraction grating layer and the first diffraction grating layer, and between the second diffraction grating layer and the scattering layer, is less than 2 mm.
11. The optical element of claim 1, wherein: On the first and / or second surfaces of the light field modulation region, the curvature of the lens substrate varies at different locations.
12. The optical element of claim 11, wherein: When the curvature of the lens substrate on the first surface is different, the radius of curvature gradually decreases from near the central visual region to far away from the central visual region; when the curvature of the lens substrate on the second surface is different, the radius of curvature gradually increases from near the central visual region to far away from the central visual region.
13. An imaging intervention device, characterized by: Includes the optical element as described in any one of claims 1 to 12.