Microstructured afocal lens with a reticulated membrane

Abstract

The utility model discloses a kind of microstructure defocus lenses with net structure film, including substrate, hard layer, net structure film and optical film, the substrate is attached with many microstructures, the net structure film is provided with at least one layer, net structure film is adsorbed on hard layer or optical film, there are several interval distribution subunits on net structure film, subunit includes light-transmitting unit and diffuse reflection unit, if subunit is light-transmitting unit, the interval region of adjacent light-transmitting unit is diffuse reflection unit, if subunit is diffuse reflection unit, the interval region of adjacent diffuse reflection unit is light-transmitting unit. The utility model is by attaching net structure film on microstructure to attenuate local position strong light, to reduce the contrast of strong light part, solve the problem that microstructure forms intensity different light spot in fundus under strong light illumination and local high contrast, to provide stable defocus signal stimulation for fundus, to provide more effective myopia management scheme.

Description

Technical Field

[0001] This utility model relates to a microstructured defocusing lens, and more particularly to a microstructured defocusing lens with a mesh structure film. Background Technology

[0002] Microstructured lenses (such as lenses and cylinders) are currently the mainstream type of defocused eyeglasses. For example, patent "Eyeglass Lens" (2013106281748) discloses a lens for correcting peripheral hyperopic defocus of the retina. This lens consists of a first refractive region in the central area and a second refractive region in the peripheral area. The first refractive region is a uniform and smooth refractive surface, and the second refractive region is a 360° annular refractive surface composed of multiple independent island-shaped microlenses. Because these microstructures often use microlenses, when the incident light is strong, they can create light spots of varying intensities on the retina. When the light is excessively strong, it can create excessively high local contrast, which is detrimental to myopia management. Therefore, preventing the formation of excessively intense light spots on the retina using these microstructures is an urgent problem to be solved. Utility Model Content

[0003] Purpose of the utility model: The purpose of this utility model is to propose a microstructured defocus lens with a mesh structure film to solve the problems of uneven light spots and local high contrast formed by the microstructure on the fundus under strong light illumination, balance the light intensity distribution on the fundus, and provide stable defocus signal stimulation.

[0004] Technical solution: This utility model includes a substrate, a hardening layer, a mesh structure film, and an optical thin film. The substrate has many microstructures attached to it. The mesh structure film has at least one layer and is adsorbed onto the hardening layer or the optical thin film. The mesh structure film has a number of spaced sub-units distributed on it. The sub-units include light-transmitting units and diffuse reflection units. If a sub-unit is a light-transmitting unit, the space between adjacent light-transmitting units is a diffuse reflection unit. If a sub-unit is a diffuse reflection unit, the space between adjacent diffuse reflection units is a light-transmitting unit.

[0005] The light-transmitting unit does not affect the optical transmittance. After passing through the diffuse reflection unit, part of the light is diffusely reflected and part is transmitted, with the transmission ratio not exceeding 95%. The mesh structure film can reduce the transmittance of the covered area, increase the diffuse reflection of the covered area, reduce the contrast of the corresponding area of ​​the fundus, and at the same time prevent excessively bright light intensity spots from appearing in the fundus.

[0006] The effective diameter of the sub-unit is between 0.1 and 50 mm. The shape of the sub-unit is not limited to hexagon, square, rectangle, circle, triangle, etc.

[0007] The additional defocus provided by the microstructure ranges from -10D to 10D, and is not limited to a single value.

[0008] The size parameters of the microstructure are not limited to one type, and the types of microstructures are not limited to microlenses, cylindrical lenses, Gaussian structures, etc.

[0009] The mesh structure film is etched onto the hardening layer or optical thin film by ion beam bombardment in a coating machine. The mesh structure film can reduce the transmittance of the covered area, increase the diffuse reflection of the covered area, reduce the contrast of the corresponding area of ​​the fundus, and at the same time prevent excessively bright light intensity spots from appearing in the fundus.

[0010] The optical film is provided with a waterproof protective film on its outer side.

[0011] Beneficial effects: This invention attenuates strong light in localized areas by attaching a mesh structure film to the microstructure, thereby reducing the contrast of the strong light area. This solves the problem of uneven light spots and localized high contrast formed by the microstructure on the fundus under strong light illumination, so as to provide stable defocus signal stimulation to the fundus and thus provide a more effective myopia management solution. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the lens structure of this utility model;

[0013] Figure 2 These are schematic diagrams showing different shapes of sub-units in a mesh-structured membrane. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings. Example

[0015] like Figure 1 As shown, the microstructured defocusing lens with a mesh structure film of this invention includes a substrate 1, a hardening layer 2, a mesh structure film 3, an optical thin film 4, and a waterproof protective film 5. The substrate 1 has numerous microstructures 101 attached to it, used to provide defocus signal stimulation to the fundus. The additional defocus amount provided by the microstructures 101 ranges from -10D to 10D, and is not limited to a single value. The size parameters of the microstructures 101 are not limited to one type, and the types of microstructures 101 are not limited to microlenses, cylindrical lenses, Gaussian structures, etc. At least one mesh structure film 3 is provided. The mesh structure film 3 is adsorbed onto the hardening layer 2 or the optical thin film 4. The mesh structure film 3 is etched onto the hardening layer 2 or the optical thin film 4 by bombarding it with an ion beam in a coating machine. The optical thin film 4 is not limited to anti-reflective coatings, anti-blue light coatings, photochromic coatings, etc.

[0016] The mesh structure membrane 3 reduces the transmittance of the covered area, increases diffuse reflection in the covered area, reduces the contrast of the corresponding area of ​​the fundus, and prevents excessively bright light intensity spots from appearing in the fundus. The mesh structure membrane 3 has several spaced sub-units distributed on it. These sub-units include light-transmitting units 301 and diffuse reflection units 302. If a sub-unit is a light-transmitting unit 301, the space between adjacent light-transmitting units 301 is the diffuse reflection unit 302; conversely, if a sub-unit is a diffuse reflection unit 302, the space between adjacent diffuse reflection units 302 is the light-transmitting unit 301. The light-transmitting units 301 do not affect the optical transmittance. After light passes through the diffuse reflection units 302, part of the light is diffusely reflected, and part is transmitted, with the transmission ratio not exceeding 95%.

[0017] like Figure 2 As shown, the shape of the sub-units in the mesh structure membrane 3 is not limited to hexagons, squares, rectangles, circles, triangles, etc. The effective diameter of the sub-units is between 0.1 and 50 mm.

[0018] The microstructured defocus lens with a mesh structure film proposed in this embodiment solves the problem of uneven light spots and local high contrast formed by the microstructure on the fundus under strong light illumination, so as to provide stable defocus signal stimulation to the fundus and thus provide a more effective myopia management solution. Example

[0019] This embodiment provides a microstructured defocusing lens with a mesh structure film, comprising a substrate 1, a hardening layer 2, a mesh structure film 3, an optical thin film 4, and a waterproof protective film 5. The mesh structure film 3 consists of numerous equally spaced hexagonal unit films adsorbed onto the hardening layer 2. The sub-units in the mesh structure film 3 are light-transmitting units 301 and diffuse reflection units 302. The light-transmitting units 301 do not affect optical transmittance; when light passes through the diffuse reflection units 302, part of the light is diffusely reflected and part is transmitted, with the transmission ratio not exceeding 95%. The effective diameter of the sub-units is 0.5 mm. The microstructure 101 in the substrate 1 is in the form of a microlens, and the additional defocus provided by the microstructure decreases from +4D to +2D from the center of the lens outwards. The optical thin film 4 is an anti-reflection film. The mesh structure film 3 is located only on the hardening layer 2 and is positioned upwards from the microstructure 101. Example

[0020] This embodiment provides a microstructured defocusing lens with a mesh structure film, comprising a substrate 1, a hardening layer 2, a mesh structure film 3, an optical thin film 4, and a waterproof protective film 5. The mesh structure film 3 consists of numerous equally spaced circular unit films, which are adsorbed onto the optical thin film 4. The sub-units in the mesh structure film 3 are light-transmitting units 301 and diffuse reflection units 302. The light-transmitting units 301 do not affect the optical transmittance; when light passes through the diffuse reflection units 302, part of the light is diffusely reflected and part is transmitted, with the transmission ratio not exceeding 95%. The effective diameter of the sub-units is 1.5 mm. The microstructure 101 in the substrate 1 adopts a cylindrical lens form, and the additional defocusing amount provided by the microstructure decreases from +4D to +2D from the center of the lens outwards. The optical thin film 4 is an anti-blue light film. The mesh structure film 3 is located only on the optical thin film 4 and is positioned downwards from the microstructure 101.

[0021] This invention attenuates strong light in localized areas by attaching a mesh structure film to the microstructure, thereby reducing the contrast of the strong light areas. This solves the problem of uneven light spots and localized high contrast formed by the microstructure on the fundus under strong light illumination, so as to provide stable defocus signal stimulation to the fundus and thus provide a more effective myopia management solution.

Claims

1. A microstructured defocusing lens with a mesh-like film, characterized in that, The device includes a substrate, a hardening layer, a mesh structure film, and an optical thin film. The substrate has numerous microstructures attached to it. The mesh structure film has at least one layer and is adsorbed onto the hardening layer or the optical thin film. The mesh structure film has several spaced sub-units distributed on it. Each sub-unit includes a light-transmitting unit and a diffuse reflection unit. If a sub-unit is a light-transmitting unit, the space between adjacent light-transmitting units is a diffuse reflection unit. If a sub-unit is a diffuse reflection unit, the space between adjacent diffuse reflection units is a light-transmitting unit.

2. The microstructured defocus lens with a mesh-structured film according to claim 1, characterized in that, The light-transmitting unit does not affect the optical transmittance. After the light passes through the diffuse reflection unit, part of the light is diffusely reflected and part of the light is transmitted, with the transmission ratio not exceeding 95%.

3. The microstructured defocusing lens with a mesh-structured film according to claim 1, characterized in that, The effective diameter of the subunit is between 0.1 and 50 mm.

4. The microstructured defocus lens with a mesh-structured film according to claim 1, characterized in that, The additional defocus provided by the microstructure is in the range of -10D to 10D.

5. The microstructured defocus lens with a mesh-structured film according to claim 4, characterized in that, The dimensional parameters of the microstructure are not limited to one.

6. The microstructured defocus lens with a mesh-structured film according to claim 1, characterized in that, The mesh structure film is engraved and etched onto the hardening layer or optical thin film by ion beam bombardment in a coating machine.

7. The microstructured defocus lens with a mesh-structured film according to claim 1, characterized in that, The optical film is provided with a waterproof protective film on its outer side.

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