Optical elements and imaging intervention devices for ocular axis development regulation

Abstract

An optical element and imaging intervention device for eye axis development 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 away from the user's eye and a second surface opposite to the first surface being formed on the base body, a plurality of pyramid prism-shaped hollow structures being arranged in the light field regulation area, the pyramid prism-shaped hollow structure having an apex and a bottom surface, the bottom surface being directed towards the first surface, and the apex being directed towards the second surface. The optical element can reduce the transmission ratio of light passing through the light field regulation area, and improve the regulation effect of eye axis development.

Description

Technical Field

[0001] This invention relates to the field of optical components technology, and in particular to an optical element and imaging intervention device for regulating axial length development. Background Technology

[0002] Myopia has become an increasingly serious problem in the global field of vision health. Current technologies typically divide lenses into a central visual area and a light field modulation area. Multiple tiny lenses are placed in the light field modulation area to reduce the amount of light passing through the lens, thereby slowing the increase in the axial length of the eye and controlling the progression of myopia.

[0003] However, even with the aforementioned technology, a significant amount of light can still pass through the glasses, meaning the light transmittance remains high, which reduces the regulatory effect on axial length development. Summary of the Invention

[0004] The present invention provides an optical element and imaging intervention device for regulating axial development. The optical element can reduce the transmittance of light when it passes through the light field regulation region, thereby improving the regulation effect of axial development.

[0005] This invention provides an optical element for regulating axial length development, comprising a lens substrate having a radial direction and a thickness direction perpendicular to the radial direction. A central visual region and a light field regulation region are formed on the lens substrate. The central visual region is formed in the middle of the lens substrate, and the light field regulation region is arranged around the central visual region. A first surface away from the user's eye and a second surface opposite to the first surface are formed on the substrate. A plurality of hollow pyramidal prism-shaped structures are disposed in the light field regulation region. Each hollow pyramidal prism-shaped structure has a vertex and a bottom surface, with the bottom surface facing the first surface and the vertex facing 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 hollow, pyramidal prism-shaped structure is recessed from the first surface toward the second surface to form a pyramidal prism-shaped groove on the first surface.

[0013] Furthermore, the hollow, pyramidal prism-shaped structure is formed within the lens substrate.

[0014] Furthermore, a divergence groove is formed on the first surface to cause the light incident on the first surface to diverge. Along the radial direction of the lens substrate, the divergence groove is disposed between two adjacent hollow pyramidal prism-shaped structures, and the bottom of the divergence groove is arc-shaped and protrudes toward the second surface.

[0015] Furthermore, the opening width of the diverging groove is less than 3mm.

[0016] Furthermore, the radius of curvature of the arc at the bottom of the divergence groove is -3000-0 mm.

[0017] Furthermore, the bottom surface of the hollow pyramidal prism structure is an equilateral triangle with a side length of less than 30 mm.

[0018] Furthermore, the relationship between the depth of the pyramidal prism-shaped hollow structure and the side length of its base is as follows:

[0019] Where: h is the depth of the hollow pyramidal prism structure; a is the side length of the base.

[0020] Furthermore, the minimum distance between the two said pyramidal prism-shaped hollow structures is less than 3 mm. The present invention also provides an imaging intervention device, including the aforementioned optical element for regulating axial length development.

[0021] Furthermore, the imaging intervention device is eyeglasses, a beam splitter for a distant image screen, or a concave mirror for a distant image screen.

[0022] In summary, in this embodiment, by setting a hollow structure in the shape of a corner prism, when light enters the light field control area from the first surface of the lens substrate, the hollow structure in the shape of a corner prism will not pass through the lens substrate and exit from the second surface, but will exit from the first surface again through reflection. This can significantly reduce the transmittance of light and improve the control effect of axial length development.

[0023] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0024] Figure 1 The diagram shown is a top view of the optical element for regulating axial length development provided in the first embodiment of the present invention.

[0025] Figure 2 As shown Figure 1 A schematic diagram of the cross-sectional structure of an optical element.

[0026] Figure 3 As shown Figure 2 A schematic diagram of a pyramidal structure.

[0027] Figure 4 The figure shown is a cross-sectional structural diagram of an optical element provided in the second embodiment of the present invention.

[0028] Figure 5 The figure shown is a cross-sectional structural diagram of an optical element provided in the third embodiment of the present invention. Detailed Implementation

[0029] To further illustrate the technical means and effects adopted by the present invention in order to achieve the intended purpose, the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments.

[0030] The present invention provides an optical element and imaging intervention device for regulating axial development. The optical element can reduce the transmittance of light when it passes through the light field regulation region, thereby improving the regulation effect of axial development.

[0031] like Figures 1 to 3 As shown, the optical element for coordinated light field modulation provided in this application embodiment includes a lens substrate, 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. As... Figure 2 As shown, it can be set to be located in Figure 2The 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 farther from the user's eye is the first surface 11, and the surface closer to the user's eye is the second surface 12. Light passes through the lens substrate 10 from the side where the first surface 11 is located, extends into the side of the second surface 12, and enters the user's eye. 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 the 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. Multiple hollow pyramidal prism-shaped structures 16 are provided in the light field control region 14. Each hollow pyramidal prism-shaped structure 16 has a vertex ( Figure 3 (represented by A in the middle) and a bottom surface ( Figure 3 (represented by B in the text), the bottom surface faces the direction of the first surface 11, and the vertex faces the direction of the second surface 12.

[0032] In this embodiment, as Figure 3 As shown, a corner bevel prism is an optical element consisting of three mutually perpendicular reflecting surfaces and a bottom surface. When light enters the hollow corner bevel prism structure 16 from the bottom surface, it is completely reflected again through the bottom surface after passing through the three mutually perpendicular reflecting surfaces. That is, when light enters the light field control region 14 from the first surface 11 of the lens substrate 10, it does not pass through the lens substrate 10 and exit from the second surface 12, but is reflected again from the first surface 11. This can significantly reduce the light transmittance and improve the control effect on axial length development.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] In this embodiment, the hollow pyramidal prism-shaped structure 16 is recessed from the surface of the first surface 11 toward the direction of the second surface 12, forming three mutually perpendicular surfaces within the lens substrate 10. That is, the hollow pyramidal prism-shaped structure 16 is a groove on the first surface 11. More specifically, the groove is triangular pyramidal in shape.

[0038] Furthermore, in this embodiment, the bottom surface of the pyramidal prism-shaped hollow structure 16 is an equilateral triangle with a side length of less than 30 mm. Preferably, the side length of the bottom surface is 0.3 mm.

[0039] Furthermore, in this embodiment, the depth of the hollow pyramidal prism-shaped structure 16, that is, the vertical distance from the vertex where the three faces of the hollow pyramidal prism-shaped structure 16 intersect within the lens substrate to the bottom surface, is related to the side length of the bottom surface as follows:

[0040] Where: h is the depth of the hollow pyramidal prism structure; a is the side length of the base.

[0041] Furthermore, the minimum distance between two adjacent hollow pyramidal prism-shaped structures 16 is less than 3 mm. Preferably, two adjacent hollow pyramidal prism-shaped structures 16 are connected together to better reduce the light transmittance.

[0042] 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.

[0043] The above settings can further complicate the optical transmission path.

[0044] 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.

[0045] 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.

[0046] Figure 4 The diagram shown is a cross-sectional structural schematic of an optical element provided in the second embodiment of the present invention. Figure 4 As shown, the optical element provided in the second embodiment of the present invention is basically the same as that in the first embodiment, except that the hollow pyramidal prism-shaped structure 16 can be directly formed within the lens substrate 10 by means of laser engraving or other methods.

[0047] That is, in this embodiment, multiple cavities are formed inside the lens substrate 10 corresponding to the light field control region 14. Each cavity is in the shape of a pyramidal prism, with its bottom surface facing the direction of the first surface 11 and its apex facing the direction of the second surface 12.

[0048] In this embodiment, inside the lens substrate 10, multiple hollow pyramidal prism-shaped structures 16 may be arranged on a single plane or may not be arranged on the same plane. For example, the multiple hollow pyramidal prism-shaped structures 16 may be arranged on a curved or wavy surface.

[0049] like Figure 5 As shown, the optical element provided in the third embodiment of the present invention is basically the same as that in the second embodiment. In this embodiment, the hollow structure 16 in the shape of a pyramidal prism is also disposed within the lens substrate 10. However, the difference lies in that, in this embodiment, a divergence groove 17 is formed on the first surface 11 to cause the light incident on the first surface 11 to diverge. The divergence groove 17 is formed by a recess in the direction from the first surface 11 toward the second surface 12. Along the radial direction of the lens substrate 10, the divergence groove 17 is disposed between two adjacent hollow structures 16 in the shape of a pyramidal prism. The bottom of the divergence groove 17 is arc-shaped, convex toward the second surface 12.

[0050] In this embodiment, a diverging groove 17 with an arcuate shape protruding towards the second surface 12 is provided, and the diverging groove 17 is positioned between two adjacent pyramidal prism-shaped hollow structures 16. After light enters the diverging groove 17, as... Figure 5 As shown, light rays entering the diverging groove 17 will diverge. Since the bottom of the diverging groove 17 is an arc shape that convexes towards the second surface 12, the diverging groove 17 is actually equivalent to a concave lens. Light rays entering it will be scattered, so that some of the light rays entering the diverging groove 17 can enter the hollow structure 16 in the shape of a pyramidal prism through divergence and be reflected out again, which can further reduce the light transmittance.

[0051] Furthermore, in this embodiment, the opening width of the diverging groove 17 is less than 3mm. Preferably, the opening of the diverging groove 17 is triangular, that is, the side of the triangle is less than 3mm.

[0052] The radius of curvature of the arc at the bottom of the divergence groove 17 is -3000-0 mm.

[0053] In summary, in this embodiment, by setting the hollow structure 16 in the shape of a corner prism, when light enters the light field control region 14 from the first surface 11 of the lens substrate 10, the hollow structure 16 in the shape of a corner prism will not pass through the lens substrate 10 and exit from the second surface 12, but will exit from the first surface 11 again through reflection. This can significantly reduce the transmittance of light and improve the control effect of axial length development.

[0054] The present invention 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.

[0055] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. 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 invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An optical element for regulating axial length development, 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 away from the user's eye and a second surface opposite to the first surface are formed on the substrate. A plurality of hollow pyramidal prism-shaped structures are provided in the light field control region. Each hollow pyramidal prism-shaped structure has a vertex and a bottom surface. The bottom surface faces the direction of the first surface, and the vertex faces the direction of the second surface.

2. The optical element for regulating axial length development 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 regulating axial length development 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; 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 for regulating axial length development according to claim 1, characterized in that: The hollow, pyramidal prism-shaped structure is recessed from the first surface toward the second surface to form a pyramidal prism-shaped groove on the first surface.

5. The optical element for regulating axial length development according to claim 1, characterized in that: The hollow, pyramidal prism-shaped structure is formed within the lens substrate.

6. The optical element for regulating axial length development according to claim 5, characterized in that: A diverging groove is formed on the first surface to cause light incident on the first surface to diverge. Along the radial direction of the lens substrate, the diverging groove is disposed between two adjacent hollow pyramidal prism-shaped structures, and the bottom of the diverging groove is arc-shaped and protrudes toward the second surface.

7. The optical element for regulating axial length development according to claim 6, characterized in that: The opening width of the diverging groove is less than 3mm.

8. The optical element for regulating axial length development according to claim 6, characterized in that: The radius of curvature of the arc at the bottom of the divergence groove is -3000-0 mm.

9. The optical element for regulating axial length development according to claim 4 or 5, characterized in that: The bottom surface of the hollow pyramidal prism structure is an equilateral triangle with a side length of less than 30 mm.

10. The optical element for regulating axial length development according to claim 4 or 5, characterized in that: The relationship between the depth of the hollow pyramidal prism-shaped structure and the side length of its base is as follows: Where: h is the depth of the hollow pyramidal prism structure; a is the side length of the base.

11. The optical element for regulating axial length development according to claim 1, characterized in that: The minimum distance between the two said pyramidal prism-shaped hollow structures is less than 3 mm.

12. An imaging intervention device, characterized in that: Includes the optical element for regulating axial length development as described in any one of claims 1 to 11.

13. The imaging intervention device according to claim 12, 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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