Scatter symmetric multi-point through-focus lens

Abstract

A scattering symmetry type multi-point defocus lens, comprising a central optical area, a microlens area and a nanolithography area arranged on a lens base; the central optical area is arranged at the geometric center of the lens base; the microlens area is arranged at the periphery of the central optical area; the microlens area is a regular octagon, the microlens area comprises a plurality of microlens units arranged in central symmetry and axial symmetry, and the microlens units are regular octagons; the nanolithography area fills the remaining area except the central optical area and the microlens units. The microlens area in the utility model is symmetrical through a regular octagon, which ensures the uniformity of defocus signal distribution, the nanolithography area fills all visual gaps through a point diffusion effect, eliminates the visual jumping feeling of traditional lenses, and realizes smooth visual transition. The microlens provides clear defocus, the nanolithography area provides background defocus, and the two cooperate to produce superimposed and enhanced prevention and control effect.

Description

Technical Field

[0001] This utility model relates to the field of myopia prevention and control, and in particular to a scattering symmetrical multi-point defocusing lens. Background Technology

[0002] In existing technologies, defocused lenses used for myopia control often employ a microlens array around the lens periphery. However, this design has significant drawbacks: First, the microlenses are typically distributed in a regular or random dot matrix pattern, resulting in spatially discontinuous defocus signals that may cause visual jitter and a foreign body sensation, affecting wearing comfort. Second, a clear optical boundary exists between the microlens area and the non-functional area; when the line of sight moves across this boundary, a noticeable visual jitter occurs. Finally, traditional lenses lack defocusing functionality in the blank areas between the microlenses, creating blind spots that may weaken the overall myopia control effect. Therefore, there is an urgent need for a defocused lens that can provide a more uniform, continuous, and comfortable visual experience.

[0003] Therefore, the existing technology has problems and needs further improvement and development. Summary of the Invention

[0004] (I) Purpose of the invention: In order to solve the problems existing in the prior art, the purpose of this utility model is to provide a scattering symmetrical multi-point defocus lens that can provide a more uniform, continuous and comfortable visual experience.

[0005] (II) Technical Solution: To solve the above-mentioned technical problems, this technical solution provides a scattering symmetry multi-point defocusing lens, including a central optical region, a microlens region, and a nano-lithography region disposed on the lens substrate; the central optical region is disposed at the geometric center of the lens substrate; the microlens region is disposed around the central optical region; the microlens region is octagonal, and the microlens region includes a plurality of microlens units arranged in a centrally symmetrical and axially symmetrical manner, the microlens units being octagonal; the nano-lithography region fills the remaining area excluding the central optical region and the microlens units.

[0006] Furthermore, the central optical region is located at the geometric center of the lens substrate, and the central optical region is a circular area with a diameter of 7mm to 8mm.

[0007] Furthermore, the microlens region is in the shape of a regular octagon with a circumcircle diameter of 55mm to 59mm, and the geometric center of the microlens region coincides with the geometric center of the lens substrate.

[0008] Furthermore, the microlens unit is in the shape of a regular octagon with a circumscribed circle diameter of 1.1 mm.

[0009] Furthermore, the microlens unit is provided with a total of 12 rings, each ring of the microlens unit is octagonal in shape, and the geometric center of each ring of the microlens unit coincides with the geometric center of the lens substrate.

[0010] Furthermore, taking the geometric center of the lens substrate as the center point, the circumradii of the microlens units, extending outward from the geometric center of the lens substrate, are 4.4mm, 6.6mm, 8.8mm, 11mm, 13.2mm, 15.4mm, 17.6mm, 19.8mm, 22mm, 24.2mm, 26.4mm, and 28.6mm, respectively.

[0011] Furthermore, the microlens units, extending outward from the geometric center of the lens substrate, have octagonal side lengths of 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, and 8 microlens units in each ring.

[0012] Furthermore, the number of microlens units in each ring, extending outward from the geometric center of the lens substrate, is 16, 24, 32, 40, 48, 56, 64, 72, 80, 88, 96, and 64, respectively.

[0013] Furthermore, the defocusing amount of the microlens units in the first to eighth rings is 5.50D, and the defocusing amount of the microlens units in the ninth to twelfth rings is 4.50D, extending outward from the geometric center of the lens substrate.

[0014] Furthermore, the nanolithography region includes a uniformly distributed array of nanolithography dots etched on the surface of the lens using a nanolithography process, with point diffusion formed by the scattering of the nanolithography dots.

[0015] (III) Beneficial Effects: The microlens region in this invention ensures the uniformity of the defocus signal distribution through its symmetrical octagonal layout, while the nanolithography region fills all visual gaps through a point diffusion effect, eliminating the visual jumpiness of traditional lenses and achieving a smooth visual transition. The microlens provides clear defocus, and the nanolithography region provides background defocus; the two work together to produce a superimposed and enhanced control effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a scattering symmetry multi-point defocusing lens according to this utility model; Figure 2 This is a magnified schematic diagram of part A of a scattering symmetry multi-point defocusing lens of this utility model.

[0017] Figure labels: 1. Central optical area; 2. Microlens area; 3. Nanolithography area; A. Local magnification. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to preferred embodiments. More details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention can obviously be implemented in many other ways different from those described herein. Those skilled in the art can make similar extensions and derivations based on actual application situations without departing from the spirit of the present invention. Therefore, the scope of protection of the present invention should not be limited by the content of this specific embodiment.

[0019] The accompanying drawings are schematic diagrams of embodiments of the present invention. It should be noted that these drawings are for illustrative purposes only and are not drawn to scale, and should not be construed as limiting the scope of protection of the present invention.

[0020] like Figure 1 , 2 As shown, a scattering-symmetric multi-point defocusing lens includes a central optical region 1, a microlens region 2, and a nano-lithography region 3 disposed on a lens substrate; the central optical region 1 is disposed at the geometric center of the lens substrate; the microlens region 2 is disposed around the central optical region 1; the microlens region 2 is octagonal and includes a plurality of microlens units arranged in a centrally and axially symmetric manner, the microlens units being octagonal; the nano-lithography region 3 fills the remaining area excluding the central optical region 1 and the microlens units.

[0021] The lens substrate can be made of polycarbonate (PC) material to give it excellent optical performance, high impact strength, and UV resistance, but it is not limited to this and no specific restrictions are imposed here. Preferably, the lens substrate is a circular lens with a diameter of 75mm.

[0022] The central optical zone 1 is located at the geometric center of the lens substrate. The central optical zone 1 is a circular area with a diameter of 7mm to 8mm, used to provide clear central vision correction. The center of the central optical zone 1 coincides with the geometric center of the lens substrate to ensure the consistency of the visual center.

[0023] A microlens region 2 is disposed around the central optical region 1. The microlens region 2 is a regular octagon with a circumcircle diameter of 55mm-59mm, and its geometric center coincides with the geometric center of the lens substrate. The high symmetry of the regular octagon of the microlens region 2 ensures a uniform distribution of the defocus signal in all directions around the lens, eliminating visual jumps caused by uneven signals, greatly improving wearing comfort, and providing stable and continuous myopia control stimulation to the eye. Simultaneously, the regular octagon of the microlens region 2 has good adaptability to the rotation pattern of the human eyeball, providing a wider effective defocus field of view in key directions such as horizontal and vertical. Furthermore, the molding and forming precision of the regular octagon of the microlens region 2 are easy to control, which helps ensure the consistency and stability of product quality and reduces production costs.

[0024] The microlens region 2 includes a plurality of microlens units arranged in a centrally symmetrical and axially symmetrical manner. Each microlens unit is a regular octagon with a circumcircle diameter of 1.1 mm. Figure 2 As shown in the enlarged view at point A, the microlens unit consists of 12 rings, each ring being a regular octagon, and the geometric center of each ring coincides with the geometric center of the lens substrate.

[0025] With the geometric center of the lens substrate as the center point, the circumradii of the microlens units extending outward from the geometric center of the lens substrate are 4.4mm, 6.6mm, 8.8mm, 11mm, 13.2mm, 15.4mm, 17.6mm, 19.8mm, 22mm, 24.2mm, 26.4mm, and 28.6mm, respectively.

[0026] The microlens units, extending outward from the geometric center of the lens substrate, have octagonal side lengths of 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, and 8 microlens units in each ring.

[0027] The number of microlens units in each ring, extending outward from the geometric center of the lens substrate, is 16, 24, 32, 40, 48, 56, 64, 72, 80, 88, 96, and 64, respectively.

[0028] The microlens units are arranged radially outward from the geometric center of the lens substrate, with each ring of microlens units having a corresponding regular octagon.

[0029] The microlens units, extending outward from the geometric center of the lens substrate, have a defocusing amount of 5.50D for the first to eighth rings and 4.50D for the ninth to twelfth rings.

[0030] The microlens units of the 12th ring are positioned at the center of each side of the regular octagon.

[0031] The microlens units, evenly arranged in a regular octagonal shape, achieve precise control and optimal balance between the defocus area and the clear visual channel. This ensures effective myopia control stimulation while maximizing comfort and clarity in the distance vision. Compared to traditional circular microlens units, the regular octagonal microlens units have a larger effective optical area and superior light field control, producing a more uniform and softer defocus background and reducing interference from irregular halos and stray light. Furthermore, the uniformity in shape between the microscopic regular octagons of the microlens units and the macroscopic regular octagons of the microlens region achieves optimized structural nesting and uniform mechanical stress, enhancing the overall structural stability of the lens.

[0032] It should be noted that the microlens unit in the attached figure is shown in the shape of a regular octagon circumcircle for illustration purposes, and the specific shape of the regular octagon of the microlens unit is not drawn.

[0033] The nanolithography region 3 fills the remaining area excluding the central optical region 1 and the microlens unit. The nanolithography region 3 includes a uniformly distributed array of nanolithographic dots etched on the lens surface using a nanolithography process. The scattering of the nanolithographic dots forms point diffusion, which allows light to scatter inside the lens, thereby reducing the high-contrast signal received by the retina, reducing the high-contrast signal detected by the retinal photoreceptor cells and the elongation signal emitted to the eye, thus slowing down the elongation of the eye axis and achieving the effect of delaying the progression of myopia.

[0034] In this invention, the microlens region, with its symmetrical octagonal layout, ensures the uniformity of the defocus signal distribution. The nanolithography region, through a point diffusion effect, fills all visual gaps, eliminating the visual abruptness of traditional lenses and achieving a smooth visual transition. The microlens provides clear defocus, while the nanolithography region provides background defocus; together, they produce a superimposed and enhanced control effect.

[0035] The above description illustrates preferred embodiments of the present invention and helps those skilled in the art to more fully understand the technical solution of the present invention. However, these embodiments are merely illustrative and should not be construed as limiting the specific implementation of the present invention to these embodiments. For those skilled in the art, several simple deductions and modifications can be made without departing from the concept of the present invention, and all such modifications should be considered to fall within the protection scope of the present invention.

Claims

1. A scattering-symmetric multi-point defocusing lens, characterized in that, It includes a central optical region, a microlens region, and a nanolithography region disposed on a lens substrate; the central optical region is disposed at the geometric center of the lens substrate; the microlens region is disposed around the central optical region; the microlens region is octagonal and includes a plurality of microlens units arranged in a centrally symmetrical and axially symmetrical manner, the microlens units being octagonal; the nanolithography region fills the remaining area excluding the central optical region and the microlens units.

2. The scattering symmetry multi-point defocusing lens according to claim 1, characterized in that, The central optical zone is located at the geometric center of the lens substrate, and the central optical zone is a circular area with a diameter of 7mm to 8mm.

3. The scattering symmetry multi-point defocusing lens according to claim 1, characterized in that, The microlens region is in the shape of a regular octagon with a circumcircle diameter of 55mm to 59mm, and the geometric center of the microlens region coincides with the geometric center of the lens substrate.

4. The scattering symmetry multi-point defocusing lens according to claim 1, characterized in that, The microlens unit is octagonal with a circumscribed circle diameter of 1.1 mm.

5. A scattering-symmetric multi-point defocusing lens according to claim 1, characterized in that, The microlens unit consists of 12 rings, each ring being a regular octagon, with the geometric center of each ring coinciding with the geometric center of the lens substrate.

6. A scattering-symmetric multi-point defocusing lens according to claim 1, characterized in that, With the geometric center of the lens substrate as the center point, the circumradii of the microlens units extending outward from the geometric center of the lens substrate are 4.4mm, 6.6mm, 8.8mm, 11mm, 13.2mm, 15.4mm, 17.6mm, 19.8mm, 22mm, 24.2mm, 26.4mm, and 28.6mm, respectively.

7. A scattering-symmetric multi-point defocusing lens according to claim 1, characterized in that, The microlens units, extending outward from the geometric center of the lens substrate, have octagonal side lengths of 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, and 8 microlens units in each ring.

8. A scattering-symmetric multi-point defocusing lens according to claim 1, characterized in that, The number of microlens units in each ring, extending outward from the geometric center of the lens substrate, is 16, 24, 32, 40, 48, 56, 64, 72, 80, 88, 96, and 64, respectively.

9. A scattering-symmetric multi-point defocusing lens according to claim 1, characterized in that, The microlens units, extending outward from the geometric center of the lens substrate, have a defocusing amount of 5.50D for the first to eighth rings and 4.50D for the ninth to twelfth rings.

10. A scattering-symmetric multi-point defocusing lens according to claim 1, characterized in that, The nanolithography region includes a uniformly distributed array of nanolithography dots etched on the surface of the lens using a nanolithography process, which forms point diffusion through the scattering of the nanolithography dots.

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