Optical element for light field synergistic modulation and imaging intervention device

Abstract

An optical element and an imaging intervention device for light field synergistic regulation, the optical element comprising a lens base body, the lens base body having a radial direction and a thickness direction perpendicular to the radial direction, a central vision area and a light field regulation area being formed on the lens base body, the central vision area being formed in the middle of the lens base body, the light field regulation area being annularly arranged outside the central vision area, a first surface and a second surface being formed on the base body, a first diffraction grating layer for diffracting light and a curved fine adjustment layer for refracting light being formed in the light field regulation area, the first diffraction grating layer being arranged on the first surface and / or the second surface, and the curved fine adjustment layer being arranged on the first surface and / or the second surface. The optical element can better regulate myopia.

Description

Technical Field

[0001] This utility model relates to the field of optical components technology, and in particular to an optical element and imaging intervention device for coordinated control of light field. 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 down the increase in the axial length of the eye and controlling the progression of myopia.

[0003] However, the defocus signal of this technology is highly regular, and the control method and the path of the light after control are relatively simple, making it unable to effectively control myopia. Utility Model Content

[0004] This invention provides an optical element and imaging intervention device for coordinated control of light field, which can effectively control myopia.

[0005] This invention provides an optical element for coordinated control of light field, including a lens substrate having a radial direction and a thickness direction perpendicular to the radial direction. 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 surface and a second surface are formed on the substrate. A first diffraction grating layer for diffracting light and a curved surface fine-tuning layer for refracting light are formed in the light field control region. The first diffraction grating layer is disposed on the first surface and / or the second surface, and the curved surface fine-tuning layer is disposed on the first surface and / or the second surface.

[0006] Furthermore, the material of the lens substrate is any one of resin, acrylic, PC, MR-8, Trivex, CR-39, and PMMA.

[0007] 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.

[0008] Furthermore, the central visual region can be any one of a circle, an ellipse, or a polygon.

[0009] Furthermore, the distance between the geometric center of the central visual region and the geometric center of the lens substrate does not exceed 50mm.

[0010] Furthermore, the geometric center of the central visual region and the geometric center of the lens substrate coincide with each other.

[0011] Furthermore, the maximum span of the central visual area is 1-15mm.

[0012] 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.

[0013] Furthermore, the curved surface fine-tuning layer includes multiple fine-tuning lenses, which are arranged around the central visual region to form a fine-tuning lens ring, and the multiple fine-tuning lens rings are spaced apart from the direction close to the central visual region to the direction far away from the central visual region.

[0014] Furthermore, two adjacent fine-tuning lenses are set tangentially.

[0015] Furthermore, the fine-tuning lens ring is arranged in a concentric ring shape, a free curve shape, or a polygon shape.

[0016] Furthermore, the fine-tuning lens is a convex lens or a concave lens.

[0017] Furthermore, the protrusion height or concave depth of the fine-tuning lens is 1-5mm.

[0018] Furthermore, the fine-tuning lens is a circular lens, a cylindrical lens, and / or an annular surface. Furthermore, a second diffraction grating layer for diffracting light is disposed in the lens substrate at a position corresponding to the light field modulation region.

[0019] 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.

[0020] 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.

[0021] Furthermore, a scattering layer is also provided on the lens substrate, the scattering layer being disposed on another surface of the lens substrate opposite to the first diffraction grating layer.

[0022] Furthermore, multiple scattering points are formed on the scattering layer, each of which is an independent protrusion or depression.

[0023] Furthermore, the maximum span of the scattering point is less than 1 mm, and the distance between two adjacent scattering points is less than 1 mm.

[0024] Furthermore, on the first and / or second surfaces of the light field modulation region, the curvature of the lens substrate varies at different locations, with the radius of curvature gradually decreasing from near the central visual region to 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 away from the central visual region.

[0025] This invention also provides an imaging intervention device, including the aforementioned optical element for coordinated control of the light field.

[0026] Furthermore, the imaging intervention device is eyeglasses, a beam splitter for a distant image screen, or a concave mirror for a distant image screen.

[0027] In summary, by setting a first grating layer and a curved surface fine-tuning layer on the lens substrate, light rays passing through the lens substrate at different angles from the light field control area can all be diffracted within the first diffraction grating layer, making the light path within the light field control area more complex and reducing the human eye's adaptation to regular light. Simultaneously, when light passes through the curved surface fine-tuning layer, it can be refracted to form a certain refractive power. The combined arrangement of the curved surface fine-tuning layer and the first diffraction grating layer makes the light path within the light field control area more complex, reducing the human eye's adaptation to regular light. Furthermore, the complex light field can stimulate specific genomes or other visual neurons within rod cells, thereby regulating gene expression and transmitting signals to the brain, optic nerve, retina, choroid, and sclera to delay axial elongation via the optic nerve system.

[0028] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model 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 utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0029] Figure 1 The diagram shown is a top view of the optical element in the first surface direction according to the first embodiment of the present invention.

[0030] Figure 2 As shown Figure 1 A schematic diagram of the cross-sectional structure of an optical element.

[0031] Figure 3 The figure shown is a cross-sectional structural diagram of the optical element provided in the second embodiment of this utility model.

[0032] Figure 4 The diagram shown is a top view of the second surface of the optical element provided in the third embodiment of this utility model.

[0033] Figure 5 As shown Figure 4 A schematic diagram of the cross-sectional structure of an optical element.

[0034] Figure 6 The figure shown is a cross-sectional structural diagram of the optical element provided in the fourth embodiment of this utility model. Detailed Implementation

[0035] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the present utility model will be described in detail below with reference to the accompanying drawings and preferred embodiments.

[0036] This invention provides an optical element and imaging intervention device for coordinated control of light field, which can effectively control myopia.

[0037] like Figures 1 to 2 As shown, the optical element for coordinated light field modulation provided in this application embodiment includes a lens substrate 10, which 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 11 and a second surface 12 disposed opposite to the first surface 11. Figure 2 As shown, it can be set to be located in Figure 2 The upper surface is the first surface 11, and the lower surface is the second surface 12. That is, when the user wears the optical element, the surface furthest from the user's eyes is the first surface 11, and the surface closer to the user's eyes is the second surface 12. A central visual region 13 and a light field control region 14 are formed on the lens substrate 10. The central visual region 13 is formed in the middle of the lens substrate 10, and the light field control region 14 is arranged around the central visual region 13 along the radial direction of the lens substrate 10. The central visual region 13 is a normal visible area, which can be set with a certain curvature as needed to refract light to a limited extent, or it can be a plane.

[0038] A first diffraction grating layer 151 is disposed within the light field control region 14, and the first diffraction grating layer 151 is disposed on the first surface 11 and / or the second surface 12. In this embodiment, the first diffraction grating layer 151 is disposed on the first surface 11. When light passes through the first diffraction grating layer 151, the light will diffract.

[0039] In this embodiment, by setting the first diffraction grating layer 151, when light passes through the lens substrate 10 from the light field control region 14 at different angles, it can be diffracted within the first diffraction grating layer 151, making the light path within the light field control region 14 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 within 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 axial elongation.

[0040] Furthermore, in this embodiment, the central visual region 13 can be any one of a circle, an ellipse, or a polygon. The distance between the geometric center of the central visual region 13 and the geometric center of the lens substrate 10 does not exceed 50mm. Preferably, the geometric center of the central visual region 13 and the geometric center of the lens substrate 10 coincide to ensure the accuracy of the curvature of the central visual region 13. The maximum span of the central visual region 13 is 1-15mm.

[0041] 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.

[0042] In the central visual region 13, the refractive index can be one of 1.50, 1.56, 1.591, 1.60, 1.67, 1.71, 1.74, or 1.76.

[0043] Furthermore, in this embodiment, the span of the light field control region 14, that is, the distance between the outer edge of the light field control region 14 and the inner edge of the light field control region 14, is 15-75mm.

[0044] Please refer to Figure 2 As shown, in this embodiment, the first diffraction grating layer 151 can be formed by multiple grooves, each groove being continuously arranged around the central visual region 13 and connected end to end; the multiple grooves are spaced apart from the direction close to the central visual region 13 to the direction far from the central visual region 13. Preferably, the multiple grooves are arranged in a concentric ring. In other embodiments, they can also be non-concentric ring free curves or polygons.

[0045] When light enters the groove, the multiple spaced grooves can form a grating structure to diffract the light.

[0046] In this embodiment, the first diffraction grating layer 151 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.

[0047] Please continue reading. Figure 1 and Figure 2 In this embodiment, the optical element for coordinated light field control further includes a curved surface fine-tuning layer 16 for refracting light. This curved surface fine-tuning layer 16 is disposed within the light field control region 14 of the first surface 11 and / or the second surface 12. It should be noted that the first diffraction grating layer 151 and the curved surface fine-tuning layer 16 can be disposed simultaneously on one surface or separately on two surfaces. Taking this embodiment as an example, the first diffraction grating layer 151 and the curved surface fine-tuning layer 16 are simultaneously disposed on the first surface 11.

[0048] The curved fine-tuning layer 16 includes a plurality of fine-tuning lenses, which can be convex or concave lenses. The plurality of fine-tuning lenses are arranged around the central visual region 13 to form a fine-tuning lens ring, with the rings spaced apart from the central visual region 13 to the region away from it. Preferably, the plurality of fine-tuning lens rings are arranged in concentric circles. In other embodiments, they can also be non-concentric free curves or polygons.

[0049] Within the same fine-tuning lens ring, two adjacent fine-tuning lenses can be set tangentially or non-tangentially.

[0050] Furthermore, when the first diffraction grating layer 151 and the curved fine-tuning layer 16 are disposed on the same surface, the fine-tuning lens is disposed between the two grooves, that is, the fine-tuning lens is disposed at the non-groove position on the surface of the lens substrate 10.

[0051] Understandably, the above arrangement ensures that the shape of the fine-tuning lens ring is basically consistent with the extended shape of the groove.

[0052] When light passes through the curved fine-tuning layer 16, it can be refracted to form a certain refractive power. The coordinated arrangement of the curved fine-tuning layer 16 and the first diffraction grating layer 151 makes the optical path within the light field control region 14 more complex, reducing the human eye's adaptability to regular light.

[0053] In this embodiment, the protrusion height or concavity depth of the fine-tuning lens is 1-5 mm. The fine-tuning lens can be a circular lens, a cylindrical lens, and / or an annular surface. Multiple fine-tuning lenses on the same optical element can have different or the same shapes.

[0054] Please continue to refer to Figure 3The second embodiment of this utility model is basically the same as the first embodiment, except that a second diffraction grating layer 152 for diffracting light is further provided on the optical element in this embodiment. Unlike the first diffraction grating layer 151, which is disposed on the surface of the lens substrate 10, the second diffraction grating layer 152 can be formed within the lens substrate 10 by means of laser engraving or other methods. The second diffraction grating layer 152 is disposed within the light field control region 14.

[0055] In this embodiment, there can be multiple cavities, each cavity being continuously arranged around the central visual region 13 and connected end to end; the multiple cavities are spaced apart from the direction closest to the central visual region 13 to the direction furthest from the central visual region 13. 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.

[0056] Similarly, the spacing between adjacent cavities can be controlled to give the second diffraction grating layer 152 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.

[0057] The first diffraction grating layer 151, the second diffraction grating layer 152, and the curved surface fine-tuning layer 16 can promote each other. When the first diffraction grating layer 151 is located on the light-incident surface side of the lens substrate 10, that is, on the first surface 11, light can first pass through the first diffraction grating layer 151 and enter the interior of the lens substrate 10. When passing through the first diffraction grating layer 151, some light will be diffracted, and when passing through the curved surface fine-tuning layer 16, it will be refracted. 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 152, so that the transmission of light path is more diversified.

[0058] In this embodiment, the multiple cavities of the second diffraction grating layer 152 inside the lens substrate 10 may not be arranged on a single plane, but may be arranged in a curved or wavy manner.

[0059] In this embodiment, the distance between the second diffraction grating layer 152 and the first diffraction grating layer 151 or the scattering layer in the thickness direction is less than 2 mm.

[0060] Furthermore, on the first surface 11 and / or the second surface 12 of the light field control region 14, 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 14, its gradual curvature will cause gradient desaturation of the light.

[0061] The above settings can further complicate the optical transmission path.

[0062] More specifically, when the curvature of the lens substrate 10 in the light field modulation region 14 on the first surface 11 is different, the radius of curvature gradually decreases from near the central visual region 13 to far away from the central visual region 13.

[0063] When the curvature of the lens substrate 10 in the light field modulation region 14 on the second surface 12 is different, the radius of curvature gradually increases from near the central visual region 13 to far away from the central visual region 13.

[0064] In other words, when manufacturing this optical element, the curvature of different locations within the light field control region 14 is first made different, and then various microstructures are formed on the surface of the light field control region 14.

[0065] like Figure 4 and Figure 5 As shown, the third embodiment of this utility model is basically the same as the first and second embodiments. The difference lies in that, in this embodiment, a scattering layer 17 for scattering light is further provided on the lens substrate 10. The scattering layer 17 is disposed on the other surface of the lens substrate 10 opposite to the first diffraction grating layer 151. In this embodiment, the first diffraction grating layer 151 is disposed on the first surface 11 of the lens substrate 10, and correspondingly, the scattering layer 17 is disposed on the second surface 12 of the lens substrate 10. When light passes through the scattering layer 17, the light is scattered within the scattering layer 17.

[0066] Understandably, in other embodiments, the scattering layer 17 may also be disposed on the first surface 11, while the first diffraction grating layer 151 may be disposed on the second surface 12.

[0067] In this embodiment, a second diffraction grating layer 152 is also provided, but the arrangement of the scattering layer 17 is not limited to the second diffraction grating layer 152. As a variation of this embodiment, the second diffraction grating layer 152 may also be omitted.

[0068] By setting up the first diffraction grating layer 151, the second diffraction grating layer 152, the curved surface fine-tuning layer 16 and the scattering layer 17, the diffraction, refraction and scattering of light can be combined to make the transmission of light paths more diversified.

[0069] In this embodiment, multiple scattering points are formed on the scattering layer 17. These scattering points can be multiple independent protrusions or depressions, and can be circular, polygonal, free-form, etc. The maximum span of the scattering points is less than 1 mm, and the distance between two adjacent scattering points is less than 1 mm.

[0070] It should be noted that in this embodiment, the scattering layer 17 and the fine-tuning lens in the curved fine-tuning layer 16 are distinguished by their size, and the size of the scattering point is smaller than the size of the fine-tuning lens.

[0071] When light passes through a small and dense scattering point, it will be scattered, but when it passes through the curved fine-tuning layer 16, it is more likely to undergo regular refraction.

[0072] like Figure 6 As shown, the optical element provided in the fourth embodiment of this utility model is basically the same as that in the above embodiments. The difference is that in this embodiment, the curved surface fine-tuning layer 16 is no longer disposed on the same surface as the first diffraction grating layer 151, but on opposite surfaces.

[0073] At this point, two adjacent curved surface fine-tuning lenses can be tangent or not.

[0074] This utility model also provides an imaging intervention device, including the above-mentioned optical elements. The imaging intervention device includes, but is not limited to, eyeglasses, a beam splitter for a distant image screen, a concave mirror for a distant image screen, etc. For other technical features of the imaging intervention device, please refer to the prior art, which will not be repeated here.

[0075] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. 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 present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An optical element for coordinated control of light field, comprising a lens substrate having a radial direction and a thickness direction perpendicular to the radial direction, characterized in that: 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 surface and a second surface opposite to the first surface are formed on the substrate. A first diffraction grating layer for diffraction of light and a curved surface fine-tuning layer for refraction of light are formed in the light field control region. The first diffraction grating layer is disposed on the first surface and / or the second surface, and the curved surface fine-tuning layer is disposed on the first surface and / or the second surface.

2. The optical element for coordinated control of light field according to claim 1, characterized in that: 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 for coordinated control of light field according to claim 1, characterized in that: 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; Alternatively, the maximum span of the central visual area is 1-15mm.

4. The optical element for coordinated control of light field according to claim 1, characterized in that: 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 for coordinated control of light field according to claim 4, characterized in that: The curved surface fine-tuning layer includes multiple fine-tuning lenses, which are arranged around the central visual region to form a fine-tuning lens ring, and the multiple fine-tuning lens rings are spaced apart from the direction close to the central visual region to the direction far away from the central visual region.

6. The optical element for coordinated control of light field according to claim 5, characterized in that: The two adjacent fine-tuning lenses are set tangentially.

7. The optical element for coordinated control of light field according to claim 5, characterized in that: Includes at least one of the following: The fine-tuning lens ring is arranged in a concentric circular ring, a free curve, or a polygon; The fine-tuning lens is a convex lens or a concave lens; The protrusion height or concavity depth of the fine-tuning lens is 1-5mm; The fine-tuning lens is a circular lens, a cylindrical lens, and / or a toroidal surface.

8. The optical element for coordinated control of light field according to claim 1 or 4, characterized in that: A second diffraction grating layer for diffracting light is disposed in the lens substrate at a position corresponding to the light field control region.

9. The optical element for coordinated control of light field according to claim 8, characterized in that: 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.

10. The optical element for coordinated control of light field according to claim 9, characterized in that: 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.

11. The optical element for coordinated control of light field according to claim 1, characterized in that: 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.

12. The optical element for coordinated control of light field according to claim 11, characterized in that: The scattering layer has multiple scattering points, each of which is an independent protrusion or depression.

13. The optical element for coordinated control of light field according to claim 12, characterized in that: The maximum span of the scattering points is less than 1 mm, and the distance between two adjacent scattering points is less than 1 mm.

14. The optical element for coordinated control of light field according to claim 1, characterized in that: On the first and / or second surfaces of the light field modulation region, the curvature of the lens substrate varies at different locations, with the radius of curvature gradually decreasing from near the central visual region to 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 away from the central visual region.

15. An imaging intervention device, characterized in that: It includes the optical element for coordinated control of light field as described in any one of claims 1 to 14.

16. The imaging intervention device according to claim 15, characterized in that: The imaging intervention device is eyeglasses, a beam splitter for a distant image screen, or a concave mirror for a distant image screen.

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