Lens for regulating and controlling fundus light intensity through multiple composite scattering

Abstract

The utility model discloses a lens for regulating and controlling fundus light intensity through multiple composite scattering, which comprises a substrate, a hardening layer and an optical film layer, and the hardening layer and the optical film layer are respectively and sequentially overlapped and processed on the front surface and the rear surface of the substrate from inside to outside; the surface of the substrate, the surface of the hardening layer and the surface of the optical film layer can be provided with at least two layers of scattering surfaces, and each scattering surface comprises a central non-scattering structure area and a peripheral scattering structure area. The beneficial effects are that the light intensity of the fundus is regulated and controlled through at least two layers of scattering surfaces, the structure distribution of the scattering surfaces is optimized, and the contrast of adjacent cone cells of the fundus is reduced; contrast distribution is optimized through multi-layer combination, and the fundus image contrast is regulated and controlled in a larger range and more levels.

Description

Technical Field

[0001] The utility model relates to a spectacle lens and a manufacturing method thereof, in particular to a lens for regulating the light intensity of the fundus through multiple composite scattering and a manufacturing method thereof, belonging to the technical field of spectacle lenses. Background Art

[0002] In recent years, studies have found that high retinal imaging contrast can promote eye growth, increase the risk of myopia and myopia degree. Therefore, reducing the contrast of the image in the retina will delay the growth of the eye axis, thereby inhibiting the development of myopia. The image on the retina consists of a normally focused image, the average intensity of which is about 74% of the average intensity generated by a lens without a protrusion array. Superimposed on the focused image is a background of uniform retinal illumination, which is equal to about 25% of the average brightness of the normally focused image. For these glasses, compared with the glasses usually used to correct (but not treat) refractive errors, the contrast of the focused image is reduced. The exact amount of contrast reduction depends on the relative amount of dark and bright areas in the transmitted image. The reduction in contrast has a significant impact on the physiology of the eye related to the mechanism responsible for controlling the growth of the eye length.

[0003] Based on this theory, a lens based on the point spread technology (Diffusion Opitics Technology, DOT) has been developed. By using the point spread technology to make scattering and diffraction structures in the area except the central light passing area, light will scatter or diffract when passing through this area, so as to generate a lower signal difference between adjacent cones, while maintaining excellent visual acuity and functional peripheral vision. For example, Nikon has developed a new myopia prevention and control lens - Contax. This lens has a prominent feature that except for a transparent small circular hole in the center, other areas seem to have been "ground" and are like pasted with a semi-permeable membrane. However, when the wearer passes through glasses with a completely blurred peripheral vision, it will cause visual discomfort and may also reduce the wearer's perception ability of the nearby environment. Excessive reduction in contrast will cause visual deprivation of the human eye and lead to the degradation of the visual function of the human eye. How to regulate the light intensity of the fundus of the human eye has become an urgent task for balanced contrast lenses. It is difficult to further regulate the light intensity of the fundus only by making a single scattering surface using DOT technology. How to provide a better method for regulating the light intensity of the fundus has become an urgent problem to be solved in the manufacture of balanced contrast lenses. Summary of the Invention

[0004] Object of the Invention: The object of the utility model is to provide a lens for regulating the light intensity of the fundus through multiple composite scattering and a manufacturing method thereof. By regulating the light intensity of the fundus through at least two layers of scattering surfaces, optimizing the structural distribution of the scattering surfaces, reducing the contrast between adjacent cone cells in the fundus, and further optimizing the contrast distribution through multi-layer combination, effective management of myopia can be achieved.

[0005] Technical solution: A lens for regulating the fundus light intensity by multi - composite scattering, comprising a substrate, a hardening layer and an optical film layer. The hardening layer and the optical film layer are respectively processed and stacked in sequence from the inside to the outside on the front and back surfaces of the substrate; Scattering surfaces may be provided on the surfaces of the substrate, the hardening layer and the optical film layer. The scattering surface includes a central non - scattering structure area and a peripheral scattering structure area, and the number of the scattering surfaces is at least two layers. The scattering surface can modulate the fundus light intensity, and the multi - composite scattering surface can further optimize the fundus light intensity.

[0006] Preferred option, the effective diameter range of the central non - scattering structure area is 1 mm to 10 mm. Its center can overlap or deviate from the center of the scattering surface. The shape of the central non - scattering structure area is not limited to circular, quasi - circular, square, hexagonal, octagonal, other polygons, etc.

[0007] Preferred option, the peripheral scattering structure area is composed of a number of scattering bodies which are convex or concave. The external dimension range of the scattering bodies is 0 to 1 mm, and the interval between the scattering bodies is less than 1 mm.

[0008] The structure of the scattering bodies can be dot - shaped, spherical, hemispherical, Gaussian type and other structures. The size range of the scattering bodies is 0 to 1 mm. The scattering bodies can be randomly distributed, semi - randomly distributed, regularly distributed. The interval between the scattering bodies is less than 1 mm. The scattering bodies can be equally spaced, variably spaced, monotonically increasing or decreasing outward along the center of the lens; The sizes of the scattering bodies can be the same, different, monotonically increasing or decreasing outward along the center of the lens.

[0009] Preferred option, the scattering bodies can be randomly distributed, semi - randomly distributed, regularly distributed. The scattering bodies can be equally spaced, variably spaced. When the scattering bodies are variably spaced, they are monotonically increasing or decreasing outward along the center of the lens.

[0010] Preferred option, the sizes of the scattering bodies can be the same; different, monotonically increasing or decreasing outward along the center of the lens.

[0011] A method for manufacturing a lens for regulating the fundus light intensity by multi - composite scattering, comprising the following steps:

[0012] S1. Determine the number of scattering layers N, and select the carrier layer where the scattering surface is located according to the number of layers. The carrier layer includes the front and back surfaces of the substrate, the front and back hardening layers and the front and back optical film layers. The number of scattering layers N satisfies 2 ≤ N ≤ 6;

[0013] S2. Select the front surface or the back surface or both front and back surfaces of the substrate to set the scattering surface. If the carrier layer other than the front and back surfaces of the substrate is selected to set the scattering surface or when the number of selectable carrier layers is less than the number of scattering layers N, then proceed to the next step. If the number of selectable carrier layers is equal to the number of scattering layers N, then enter step S5;

[0014] S3. According to the remaining undetermined number of scattering layers, select a hardening layer or a post-hardening layer or two front and rear hardening layers to set the scattering surface. If it is selected to set the scattering surface on a carrier layer other than the hardening layer and the substrate, or when the number of available carrier layers is less than the number of scattering layers N, proceed to the next step. If the number of available carrier layers is equal to the number of scattering layers N, enter step S5;

[0015] S4. According to the remaining undetermined number of scattering layers, select a front optical film layer or a rear optical film layer or two front and rear optical film layers to set the scattering surface to meet the requirements of the number of scattering layers;

[0016] S5. Complete the production and process layer by layer according to the scheme set in the above steps.

[0017] Preferred option: The processing methods of the scatterers on the scattering surfaces of the hardening layer and the optical film layer include inkjet printing, photocuring, laser etching, embossing, thermal printing, or screen printing.

[0018] Preferred option: The processing methods of the scatterers on the scattering surface of the substrate include die, inkjet printing, photocuring, laser etching, embossing, thermal printing, or screen printing.

[0019] Preferred option: The lasers used in the laser etching include infrared lasers, carbon dioxide lasers, and pulsed lasers, and the power range of the lasers is 0.1W to 100W.

[0020] Preferred option: The range of reduction in the image contrast by modulating the fundus light intensity with the superimposed scattering surface is 1% - 85%.

[0021] Beneficial effects: Compared with a single-layer scattering surface, the present utility model regulates the fundus light intensity through at least two layers of scattering surfaces, optimizes the structural distribution of the scattering surfaces, reduces the contrast between adjacent cone cells in the fundus, and further optimizes the contrast distribution through multi-layer combination; multiple composite scatterings can provide more options for modulating the fundus light intensity, can achieve a larger range and more levels of regulating the contrast of the fundus image, and are suitable for more people, so as to more effectively manage myopia. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0023] Figure 1 It is a structural schematic diagram of the lens and the scattering surface distribution of the present utility model;

[0024] Figure 2 It is an effect diagram of the random distribution of the scattering surface of the present utility model;

[0025] Figure 3 This is the flow chart for manufacturing the lens of the present utility model. Specific embodiments

[0026] 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0027] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0028] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "under" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0029] As Figure 1 and 2 shown, a lens for regulating the light intensity of the fundus with multiple composite scattering includes a substrate 1, a hardening layer 2, a waterproof optical film layer 3, and a scattering surface 4. The scattering surface 4 is composed of a central non-scattering structure area 401 and a peripheral scattering structure area 402. The scattering surface 4 is at least distributed on one of the substrate 1, the hardening layer 2, and the waterproof optical film layer 3; the scattering surface 4 has at least two layers; the scattering surface 4 can modulate the light intensity of the fundus, and the multiple composite scattering surfaces can further optimize the light intensity of the fundus.

[0030] The number of layers N of the scattering surface 4 satisfies 2 ≤ N ≤ 6. The effective diameter range of the non-scattering structure area 401 at the center of the scattering surface 4 is 1 mm to 10 mm. Its center can overlap or deviate from the center of the scattering surface 4. The shape of the non-scattering structure area 401 at the center is not limited to circular, quasi-circular, square, hexagonal, octagonal, other polygons, etc. The outer scattering structure area 402 of the scattering surface 4 is composed of several dot-shaped, spherical, hemispherical, Gaussian-type, etc. scatterers 403 that are convex or concave. The size range of the scatterers 403 is 0 to 1 mm. The scatterers 403 can be randomly distributed, semi-randomly distributed, or regularly distributed. The spacing of the scatterers 403 is less than 1 mm. The scatterers 403 can be equally spaced, variably spaced, monotonically increasing or monotonically decreasing outward along the center of the lens. The sizes of the scatterers 403 can be the same, different, monotonically increasing or monotonically decreasing outward along the center of the lens.

[0031] As Figure 3 shown, a method for manufacturing a lens for multi-compound scattering regulation of fundus light intensity includes:

[0032] S1. Determine the number of layers N of the scattering surface 4, and select the carrier layer where the scattering surface 4 is located according to the number of layers. The carrier layer includes the front and back surfaces of the substrate 1, the front and back hardening layers 2, and the front and back optical film layers 3. The number of layers N of the scattering surface 4 satisfies 2 ≤ N ≤ 6;

[0033] S2. Select the front surface 101 or the back surface 102 of the substrate 1 or both the front and back surfaces to set the scattering surface 4. If it is selected to set the scattering surface 4 on a carrier layer other than the front surface 101 and the back surface 102 of the substrate 1 or when the number of available carrier layers is less than the number of layers N of the scattering surface 4, then proceed to the next step. If the number of available carrier layers is equal to the number of layers N of the scattering surface 4, then enter step S5;

[0034] S3. According to the remaining undetermined number of layers of the scattering surface 4, select the hardening layer 201 or the back hardening layer 202 or both the front and back hardening layers 2 to set the scattering surface. If it is selected to set the scattering surface 4 on a carrier layer other than the hardening layer 2 and the substrate 1 or when the number of available carrier layers is less than the number of layers N of the scattering surface 4, then proceed to the next step. If the number of available carrier layers is equal to the number of layers N of the scattering surface 4, then enter step S5;

[0035] S4. According to the remaining undetermined number of layers of the scattering surface 4, select the front optical film layer 301 or the back optical film layer 302 or both the front and back optical film layers 3 to set the scattering surface 4 to meet the requirements of the number of layers of the scattering surface 4;

[0036] S5. Complete the manufacturing and process layer by layer according to the scheme set in the above steps.

[0037] The scatterers 403 in the scattering surfaces 4 of the hardening layer 2 and the waterproof optical film layer 3 can be fabricated by means such as inkjet printing, photocuring, laser etching, imprinting, thermal printing, screen printing, etc. The scatterers 403 in the scattering surface 3 of the substrate 1 can be fabricated by means such as molds, inkjet printing, photocuring, laser etching, imprinting, thermal printing, screen printing, etc. The laser used for laser etching includes infrared laser, carbon dioxide laser, and pulsed laser, and the power of the laser ranges from 0.1 W to 100 W. A lens for multi - composite scattering regulation of fundus light intensity can modulate the image contrast reduction range of the fundus light intensity from 1% to 85%. Embodiment

[0038] As Figure 1 and 2 As shown, a lens for multi - composite scattering regulation of fundus light intensity and its manufacturing method include a substrate 1, a hardening layer 2, a waterproof optical film layer 3, and a scattering surface 4. The scattering surface 4 is composed of a central non - scattering structure region 401 and a peripheral scattering structure region 402. The scattering surface is located on the front and back surfaces of the hardening layer 2, and the number of layers N of the scattering surface 4 satisfies N = 2. The effective diameter of the central non - scattering structure region 401 of the scattering surface 4 is 5 mm, and its center can overlap with the center of the scattering surface 4. The shape of the central non - scattering structure region 401 is circular. The peripheral scattering structure region 402 of the scattering surface 4 is composed of a number of recessed dot - shaped scatterers 403. The size of the scatterers 403 is 0.2 mm, the scatterers 403 are randomly distributed, and the interval between the scatterers 403 is less than 1 mm; the sizes of the scatterers 403 are basically the same. The scatterers 403 on the front and back surfaces of the hardening layer 2 can be fabricated by laser etching. A lens for multi - composite scattering regulation of fundus light intensity can modulate the image contrast of the fundus light intensity to be reduced by 10%. The material of the substrate 1 is a resin material.

[0039] The present utility model provides a lens for multi - composite scattering regulation of fundus light intensity and its manufacturing method. By regulating the fundus light intensity through at least two layers of scattering surfaces, optimizing the structural distribution of the scattering surfaces, reducing the contrast between adjacent cone cells in the fundus, and further optimizing the contrast distribution through multi - layer combination; multi - composite scattering can provide more choices for fundus light intensity modulation, can achieve a larger range and more levels of regulating the fundus image contrast, and is suitable for more people to facilitate more effective management of myopia.

[0040] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and reference can be made to the method part for relevant explanations.

[0041] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A lens for regulating fundus light intensity by multi - complex scattering, comprising a substrate (1), a hardening layer (2) and an optical film layer (3), wherein the hardening layer (2) and the optical film layer (3) are sequentially stacked and processed on the front and back surfaces of the substrate (1) from the inside out; it is characterized in that: The surface of the substrate (1), the hardening layer (2) and the optical film layer (3) may be provided with a scattering surface (4). The scattering surface (4) includes a central non-scattering structure area (401) and a peripheral scattering structure area (402), and the number of the scattering surfaces (4) is at least two layers.

2. The lens for regulating the fundus light intensity by multi - composite scattering according to claim 1, characterized in that: The effective diameter range of the central non-scattering structure area (401) is 1 mm to 10 mm.

3. The lens for regulating the fundus light intensity by multiple composite scattering according to claim 1, characterized in that: The peripheral scattering structure area (402) is composed of a number of scattering bodies (403) which are convex or concave. The external dimension range of the scattering bodies (403) is 0 to 1 mm, and the interval between the scattering bodies is less than 1 mm.

4. The lens for regulating the fundus light intensity by multiple composite scattering according to claim 3, wherein: The scattering bodies (403) are distributed at variable intervals, increasing or decreasing monotonically from the center of the lens outwards.

5. The lens for regulating the fundus light intensity by multiple composite scattering according to claim 3, characterized in that: The size of the scattering bodies (403) increases or decreases monotonically from the center of the lens outwards.

6. The lens for regulating the fundus light intensity by multiple composite scattering according to claim 1, wherein: The number of the scattering surfaces (4) does not exceed 6 layers.

7. The lens for regulating the fundus light intensity by multiple composite scattering according to claim 1, characterized in that: The reduction range of the image contrast for regulating the fundus light intensity by superimposing the scattering surfaces (4) is 1% to 85%.

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