Lens for delaying growth of ocular axis

Abstract

The utility model discloses a lens for delaying eye axis growth, which comprises a substrate, a central visual area and an optical element array, the circle center of the central visual area coincides with the circle center of the substrate, and the optical element array is arranged in the area outside the central visual area. By utilizing an optical element array, the intensity, phase and polarization direction of light are controlled to form diffraction, increase haze value, reduce MTF function and delay growth of an ocular axis, so that myopia is prevented, myopia occurrence is delayed, and myopia development is delayed.

Description

Technical Field

[0001] The utility model relates to the field of lens processing and the field of optical elements, and specifically relates to a lens for delaying the growth of the eye axis. Background Technique

[0002] In the global field of vision health, myopia has become an increasingly serious problem, especially among teenagers. For a long time, the myopia prevention and control lens market has been mainly dominated by foreign brands that master the technology of micro-lens defocus. This technology creates a defocus area by designing a micro-lens array on the lens, so as to slow down the growth of the axial length of the eye, thereby achieving the purpose of controlling the development of myopia. However, the defocus signal of this technology has a high degree of regularity. As time goes by, the human brain gradually adapts to this regular defocus pattern, resulting in a gradual weakening of its control effect.

[0003] In view of the above limitations, there is an urgent need for a new technical solution in the market to provide more effective means for myopia prevention and control. For this reason, we have developed a spectacle lens that uses optical elements to delay the growth of the eye axis. Content of the Utility Model

[0004] The purpose of the utility model is to provide a lens for delaying the growth of the eye axis to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: It includes a base, a central visual area and an optical element array. The center of the central visual area coincides with the center of the base, and the optical element array is arranged in the area outside the central visual area.

[0006] Preferably, the base is any one of the substrates with refractive indices of 1.56, 1.591, 1.60, 1.67, 1.71, and 1.74.

[0007] Preferably, the central visual area is circular with a diameter of 5-10 mm.

[0008] Preferably, the optical element array includes but is not limited to two types: multi-loop annular patterns, thread structures, and micro-holes arranged in an annular array;

[0009] For the optical element array composed of multi-loop annular patterns, the width of the pattern is 0.001 mm - 1 mm, the interval is 0 - 1 mm, and it is engraved by ultraviolet ultra-fine laser; the depth inside the annular pattern is between 0.00001 mm - 1 mm, and the depths are different;

[0010] For the optical element array composed of micro-holes arranged in an annular array, the diameter of the holes is 0.0003 mm - 0.05 mm, and the interval is 0.001 mm - 1 mm.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: By using an optical element array, the intensity, phase, and polarization direction of light are controlled to form diffraction, increase the haze value, reduce the MTF function, and delay the growth of the eye axis, thereby preventing myopia, delaying the onset of myopia, and delaying the development of myopia. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic structural diagram of the annular pattern optical element array of the present utility model;

[0013] Figure 2 It is a schematic structural diagram of the annular hole optical element array of the present utility model.

[0014] In the figure: 10, substrate; 20, central visual area; 30, optical element array. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, as long as it involves changing the lens surface structure by ultra-fine laser or other means to form a metasurface structure / 2D optics / 3D optics / multiple micro-precision optical elements, it falls within the protection scope of this patent.

[0016] The present utility model provides a technical solution for a lens that delays the growth of the eye axis:

[0017] Embodiment:

[0018] As Figure 1 and Figure 2 shown, it includes a substrate 10, a central visual area 20, and an optical element array 30. The center of the central visual area 20 coincides with the center of the substrate 10, and the optical element array 30 is arranged in an area outside the central visual area 20.

[0019] Among them, the substrate 10 is any one of the substrates with refractive indices of 1.56, 1.591, 1.60, 1.67, 1.71, and 1.74.

[0020] Among them, the central visual area is circular with a diameter of 5 - 10 mm.

[0021] Among them, the optical element array 30 includes but is not limited to two types: multi-loop annular patterns, thread structures, and tiny holes arranged in an annular array. For example, arbitrarily arranged patterns, any shape and any structure, as long as a single pattern or several adjacent patterns have their intervals / widths / depths satisfying the data ranges we proposed, or form diffraction;

[0022] An optical element array 30 composed of multi - turn annular patterns, with the pattern width being 0.001 mm to 1 mm, the interval being 0 to 1 mm, and being engraved by an ultraviolet ultra - fine laser; the depth within the annular pattern is between 0.00001 mm and 1 mm, and the depths are different;

[0023] An optical element array 30 composed of a circular array of micro - holes, with the hole diameter being 0.0003 mm to 0.05 mm and the interval being 0.001 mm to 1 mm.

[0024] In this embodiment, the optical element array 30 should be adjusted according to the visual state of the wearer, so that the haze value, MTF function, light field distribution, and modulation - demodulation function change. Specifically as follows:

[0025] The MTF function formula refers to Equation (1):

[0026]

[0027] The calculation formula of C(f) refers to Equation (2):

[0028]

[0029] Among them, C(0) is the calculated value of eye refractive error, and V is the pattern spacing or hole spacing of the optical element array 30.

[0030] Usage method and steps:

[0031] Step 1: First, measure the eye data of the wearer, including data such as prescription diopter, axial length of the eye, pupil distance, and pupil height.

[0032] Step 2: Subsequently, analyze the visual condition of the wearer: such as low - degree hyperopia, plano - lens, low - degree myopia, medium - to - high - degree myopia.

[0033] Step 3: Data input and calculation: Input the measured data, the visual condition, age, and gender of the wearer into computer - aided calculation software. Subsequently, the software calculates the optimal haze value, MTF function, and light field distribution based on these data;

[0034] Subsequently, input the above - obtained optimal haze value into an ultraviolet ultra - fine laser processing system device to calculate the metasurface structure / binary optics / ternary optics / multi - element micro - precision optical elements of the lens.

[0035] Step 4: After the data calculation is completed, the substrate is fixed in the ultraviolet ultra-precision laser processing system equipment at this time. The equipment performs precise laser engraving on the substrate according to the calculated data to form micro-optical components; thereby causing diffraction, reducing the modulation and demodulation function, increasing the haze value, thus affecting the light field distribution in the surrounding area, and further achieving the purpose of delaying the growth of the eye axis.

[0036] Processing adjustment: Based on the calculation and analysis results of steps 1, 2, and 3, adjust the parameters during the engraving process to achieve the required haze value, MTF function, and diopter change.

[0037] Step 5: After the engraving is completed, the product is subjected to necessary grinding and polishing treatments through a grinding device, thereby improving the comfort and aesthetics of the product in use and avoiding harm to the user caused by the overly sharp edge of the lens. At this time, the production of the product can be completed, and the overall structure is simple and highly practical.

[0038] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lens for delaying the growth of the eye axis, comprising a base (10), a central visual area (20) and an optical element array (30), characterized in that: The center of the central visual area (20) coincides with the center of the substrate (10), and the optical element array (30) is disposed in a region outside the central visual area (20).

2. The lens for delaying eye axis growth according to claim 1, characterized in that: The substrate (10) is any one of substrates with refractive indices of 1.56, 1.591, 1.60, 1.67, 1.71, and 1.

74.

3. The lens for delaying the growth of the eye axis according to claim 1, characterized in that: The central visual area is circular with a diameter of 5 - 10 mm.

4. A lens for delaying the growth of the eye axis according to claim 1, characterized in that: The optical element array (30) includes, but is not limited to, multi - loop annular patterns, thread structures, and two types of micro - holes arranged in an annular array; For the optical element array (30) composed of multi - loop annular patterns, the width of the patterns is 0.001 mm - 1 mm, the interval is 0 - 1 mm, and it is engraved by ultraviolet ultra - fine laser; the depth within the annular patterns is between 0.00001 mm - 1 mm, and the depths are different from each other; For the optical element array (30) composed of micro - holes arranged in an annular array, the diameter of the holes is 0.0003 mm - 0.05 mm, and the interval is 0.001 mm - 1 mm.

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