WO2021049718A1

WO2021049718A1 - Color vision correction optical filter and lens comprising same

Info

Publication number: WO2021049718A1
Application number: PCT/KR2019/016868
Authority: WO
Inventors: 유민기
Original assignee: 주식회사 알엠케이
Priority date: 2019-09-10
Filing date: 2019-12-02
Publication date: 2021-03-18
Also published as: KR102255868B1; KR20210030605A

Abstract

The present invention relates to: a color vision correction optical filter and a lens comprising same and, more particularly, to a color vision correction optical filter and a lens comprising same, the filter blocking a partial range of a light spectrum by patterning, on a transparent base, a fine pattern in which a material such as metal is formed in the size of nanometer units. A color vision correction optical filter according to the present invention comprises: a filter base having light transmissivity, and a filter unit which is coupled to the filter base and which includes a fine structure arranged to block a partial range of a light spectrum. A lens comprising the color vision correction optical filter, according to the present invention, comprises: a lens having light transmissivity; and the color vision correction optical filter coupled to either one surface or the inside of the lens.

Description

Color vision correction optical filter and lens equipped with the same

The present invention relates to a color vision correction optical filter and a lens having the same, and more specifically, by patterning a fine pattern in which a material such as a metal is formed in a nanometer size on a transparent base, a partial range of the optical spectrum is obtained. It relates to a color vision correction optical filter that blocks, and a contact lens and spectacle lens having the same.

Conical cells (圓錐細胞) are optic cells in the retina of the eye and function to sense color.

Conical cells are cells that detect bright light of 0.1 Lux or more. There are more than 6 million cone cells and more than 90 million rod cells in the human retina. There are three types of cone cells in the retina.

Congenital or acquired cone cell abnormalities cause color vision disorders in which colors are not accurately recognized. If one of the three types of cone cells fails to function, it becomes red-green blind, incapable of distinguishing between red and green, or yellow-blue blind, incapable of distinguishing between yellow and blue. Eyes with normal color vision are referred to as normal color vision, and red-green blind or yellow-blue color blindness that cannot distinguish colors partially is referred to as partial color blindness.

If you have normal color recognition ability, you can distinguish colors by mixing three colors of red, green, and blue, but in the case of color blindness boxes with partial color blindness, the wavelengths of the light spectrum to which each cone cell reacts are close or overlap, making it difficult to distinguish colors. .

On the other hand, in the field of ophthalmology, it has been found that light entering through the lens is corrected by providing a lens that selectively filters incident light in the visible region of the spectrum.

Using this fact, prior inventions have been disclosed for providing a lens that individually blocks some specific wavelength range of visible light to the eye of a patient in order to help color vision sufferers perceive color.

In Korean Patent Laid-Open No. 10-2012-0111884, a lens having a color vision correction function is disclosed by coloring a dye (tint). However, the prior art has a problem that when the lens is colored with a red dye, the wearer's field of view is seen as red as a whole, and in the case of a lens colored in red, there is a problem that it is difficult to distinguish between blue and green. have.

Another prior art, US Patent No. US10054803, applied a multilayer optical film to block the green and red boundary areas mainly to prevent the wearer's vision from becoming red, but dozens of layers of metal oxide thin films are used to obtain the desired spectrum blocking effect. It has difficulty in securing flexibility because it can only be formed to have a thickness of several micrometers using a sintered material.

In addition, Korean Patent Registration No. 10-1962913 proposes LED color correction glasses for people with color vision disorders. A transparent display mounted on the eyeglass frame and an LED module that is attached to the bar of the eyeglass frame and capable of displaying any one or more of the colors in the visible area are provided. Including, it provides an invention that can correct whether the color vision is the color of the box. However, since the spectacle lens using the light emission of LED is configured, it is harmful to the wearer's eye health, and when viewed from the outside, it has a problem that it shows a distinctly different appearance from ordinary glasses, causing cosmetic problems.

Accordingly, an object of the present invention is to correct the color vision perception of a color blind box that suffers from color vision disorders due to congenital or acquired abnormalities in cone cells, and provides a fine pattern structure of a structure (or material) such as metal without coloring a dye on the lens. It performs a color vision correction function by selectively blocking wavelengths in a partial range of the light spectrum according to the degree of color vision abnormality of the wearer including the wearer, while preventing the wearer's vision from appearing as a whole red, and forming a fine pattern with a single layer of metal thin film. It is intended to provide a color vision correction optical filter that can be formed to perform thin and flexible color vision correction, and a color vision correction optical filter that can be manufactured more easily and inexpensively because the difficulty of the manufacturing process is lower than that of the prior art. In addition, it is to provide a curved spectacle lens and a flexible contact lens using a metal fine pattern that can be easily formed on a flexible base.

In order to achieve the above object, the color vision correction optical filter of the present invention includes a filter base and a filter unit including a microstructure coupled to the filter base and arranged to block a partial range of the optical spectrum.

In the microstructure, a plurality of metal structures may be patterned on the filter base.

The metal structure may be formed in at least one of a circle, an oval, a triangle, a square, a hexagon, a bar shape, and an irregular shape.

The metal structure is a microstructure having the shortest length from the center to the boundary, the thickness of the metal structure, and the spacing between the centers of the plurality of metal structures in nanometer units.

The metal structure may have a length from a center to a boundary of one side of 50 nm to 500 nm, a thickness of 50 nm to 100 nm, and an interval between the centers of each metal structure of 110 nm to 2 μm.

The metal structure may have a length of 100 nm from a center to a boundary of one side, a thickness of 70 nm, and an interval between the centers of each metal structure of 360 nm to 400 nm.

The plurality of metal structures may be at least one of Al, Ag, Au, Cu, Mo, Zn, and Ti.

The filter unit may have a transmittance of less than 20% in a wavelength range of 520 nm to 580 nm in the optical spectrum.

The material of the filter base may be at least one of glass, plastic, and polymer.

It may further include a filter cover layer covering the filter part.

In order to achieve the above object, a lens having a color vision correction optical filter according to the present invention includes a lens having light transmission and a color vision correction optical filter coupled to one of one surface and an interior of the lens, and the color vision correction optical filter And a filter unit having a light-transmitting filter base and a microstructure coupled to the filter base and arranged to block a partial range of the light spectrum.

The lens may include a first layer having light transmittance, the color vision correction optical filter coupled to one surface thereof, and a second layer covering the color vision correction optical filter and the first layer and having light transmittance. In addition, a filter cover layer covering the filter unit may be further included.

According to the present invention, there is an effect of correcting the perception of color vision of a color blindness box by including a filter base and a filter unit including a microstructure that is coupled to the filter base and arranged to block a partial range of the light spectrum.

The plurality of metal structures are formed in at least one of a circle, an oval, a triangle, a square, a hexagon, a bar shape, and an irregular shape, and are patterned on the filter base to form a fine pattern with a single layer of metal thin film. Thus, a filter capable of performing thin and flexible color vision correction can be provided.

The metal structure is a microstructure in which the length from the center to the boundary of one side, the thickness of the metal structure, and the spacing between the centers of each metal structure are nanometers, and the length of the plurality of metal structures from the center to the boundary of one side is 50 ㎚ to 500 ㎚, thickness 50 ㎚ to 100 ㎚, the interval between the center of the metal structure may be 110 ㎚ to 2㎛, the length of the metal structure from the center to the boundary of one side is 100 ㎚, the thickness is 70 ㎚, each Since the spacing between the centers of the metal structure is 360 to 400 nm, the transmittance in the wavelength range of 520 nm to 580 nm of the optical spectrum is less than 20%, so that the color vision correction optical filter of the present invention can block a partial range of the optical spectrum.

The material of the filter base is formed of at least one of glass, plastic, and polymer having light transmission, and the material of the filter cover film accommodating the filter unit is formed of at least one of glass, plastic, and polymer, so that it can be easily formed on a flexible base. It is possible to provide a curved spectacle lens and a flexible contact lens by using a metal fine pattern.

In order to achieve the above object, a lens having a color vision correction optical filter according to the present invention includes a lens having light transmission and a color vision correction optical filter coupled to one of one surface and an interior of the lens, and the color vision correction optical filter , Including a filter base having light transmission and a filter unit including a microstructure that is coupled to the filter base and arranged to block a partial range of the light spectrum. It is possible to provide a contact lens for correcting color vision perception and a lens used for a spectacle lens.

1 is a plan view showing an optical filter for color vision correction according to the present invention.

2 is a plan view showing another embodiment of an optical filter for color vision correction according to the present invention.

3 is a perspective view showing a coupling relationship between the color vision correction optical filter according to the present invention.

4 is a graph showing the result of a transmittance simulation of the color vision correction optical filter according to the present invention.

5 is a graph showing that when visible light in which green and red are mixed is incident on the eyes of a normal person, green and red are distinguished and identified.

6 is a graph showing a result of inability to distinguish between green and red when visible light in which green and red are mixed is incident on the eyes of a box.

7 is a plan view showing a contact lens having a color vision correction optical filter according to the present invention.

8 is a side view showing a contact lens having a color vision correction optical filter according to the present invention.

9 is a side view showing receiving grooves formed on two surfaces of a contact lens having a color vision correction optical filter according to the present invention.

10 is a side view of a spectacle lens having a color vision correction optical filter according to the present invention and a view showing a state in which it is utilized.

11 is a perspective view showing a state of spectacles to which a spectacle lens having a color vision correction optical filter according to the present invention is combined.

In the following description, it should be noted that only parts necessary for understanding the embodiments of the present invention will be described, and descriptions of other parts will be omitted without distracting the gist of the present invention.

Terms or words used in the present specification and claims described below should not be construed as being limited to a conventional or dictionary meaning, and the inventor is appropriate as a concept of terms in order to describe his own invention in the best way. It should be interpreted as a meaning and concept consistent with the technical idea of the present invention on the basis of the principle that it can be defined. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are only preferred embodiments of the present invention, and do not represent all the technical ideas of the present invention, and various equivalents that can replace them at the time of application It should be understood that there may be variations and variations.

The present invention relates to a lens having a color vision correction optical filter and a color vision correction optical filter for a color vision disorder person having an abnormality in a cone cell responsible for color recognition. In this case, the lenses may include lenses for spectacles and contact lenses.

1 to 3, a color vision correction optical filter 10 according to an embodiment of the present invention includes a filter base 11, a filter part 20, and a filter cover film 15.

The material of the filter base 11 and the filter cover film 15 may be any one of glass, plastic, and flexible polymer. The filter base 11 and the filter cover film 15 are preferably light-transmitting, transparent, and flexible materials.

The filter unit 20 includes a plurality of metal structures 13 capable of interfering with light transmission.

At this time, the plurality of metal structures 13 are preferably patterned and coupled to the filter base 11.

The filter unit 20 may further include a thin film (not shown) so that a plurality of metal structures 13 can be patterned on the filter base 11. Patterning is a general technical content, so a detailed description thereof will be omitted.

The plurality of metal structures 13 have at least one shape of a circle, an oval, a triangle, a square, a hexagon, and an irregular shape, are discontinuous, are regularly arranged or arranged irregularly, and are opaque to block some wavelength ranges of the light spectrum. It forms a microstructure so that it can (reflect). In addition, as another embodiment, as shown in FIG. 2, the metal structure may have a bar shape.

In FIGS. 1 to 3, the metal structure 13 patterned on the filter base 11 is illustrated in a circular shape with a thickness, but is not limited thereto, and the thickness is oval, triangular, square, hexagonal, bar-shaped, and It can be indefinite.

After the plurality of metal structures 13 are arranged and patterned on the filter base 11, a filter cover film 15 capable of covering the filter base 11 and the plurality of metal structures 13 may be further included. have.

The plurality of metal structures 13 patterned on the filter base 11 may preferably be at least one of Al, Ag, Au, Cu, Mo, Zn, and Ti. Alloys of the metals listed above are of course possible.

The plurality of metal structures 13 patterned on the filter base 11 have a microstructure with a length (d) from the center to the boundary of one side, a distance between the centers of the structure (a), and a thickness of nanometers. The length d may be a length from the center of the metal structure 13 to the shortest boundary of the same metal structure 13.

A microstructure in which a plurality of metal structures 13 are arranged may be patterned to have an area capable of covering the entire filter base 11. However, the present invention is not limited thereto, and is formed only in the center of the filter base 11, and the metal structure 13 is not patterned at the edge, and only the transparent filter base 11 may be present.

The plurality of metal structures 13 patterned on the filter base 11 have a length (d) from the center to the boundary of one side of 50 nm to 500 nm, a thickness of 50 nm to 100 nm, and a metal structure ( The spacing (a) between the centers of 13) may be 110 nm to 2 μm.

Preferably, the plurality of metal structures 13 patterned on the filter base 11 have a length (d) of 100 nm, a thickness of 70 nm, and a spacing (a) of 360 nm to 400 nm from the center to the boundary of one side. I can.

4 shows a plurality of metal structures 13 having a length (d) of 100 nm and a thickness of 70 nm from the center of the metal structure 13 to the boundary of one side, and then the spacing between the centers of each metal structure (a) This is a graph showing the simulation results of transmittance when changed to 360 nm, 380 nm, and 400 nm at intervals of 20 nm, respectively.

Referring to FIG. 4, in the portion where the transmittance is minimized according to the change in the spacing of the plurality of metal structures 13, the transmittance is less than 20% in the range of 520 nm to 580 nm with the red-green drug correction function. Showed. Low transmittance means high reflectance.

The effect of having a transmittance of less than 20% in the range of 520 nm to 580 nm with the red-green drug correction function of the color vision correction optical filter 10 according to the present invention will be described with reference to FIGS. 5 and 6.

There are three types of cone cells (L, M, and S cone cells) in the human retina. L cone cells are sensitive to light between yellow and green, which has a relatively long wavelength among visible rays, and is most sensitive to light with a wavelength of 564 nm. L stands for long-wavelength. M cone cells are sensitive to medium-wavelength light between cyan and blue, and most sensitive to light with a wavelength of 534 nm. S cone cells are sensitive to short-wavelength light between blue and purple, and most sensitive to light with a wavelength of 420 nm.

When white light or light reflected from an object enters the human eye, it enters the human eye in a mixed state of various colors, which causes the three cone cells, that is, L, M, and S cone cells, to react. The mixed colors are separated and recognized. That is, for example, as shown in FIG. 5, when a mixed color of green and red is incident on the human eye, whether the L and M cone cells react and separate light, respectively, and the incident color is close to green, It is recognized separately if it is a color that is close to red or if the two colors are not skewed to one side. This can be expressed as the sum of the wavelengths recognized by the L and M cone cells (A), where two peaks of the sum of the wavelengths recognized by the L and M cone cells (A) are formed to indicate the color corresponding to the location of the peaks. Normal people recognize it separately.

However, as shown in FIG. 6, in the case of a color vision box in which the cone cells are congenital or acquired in the M and/or L cone cells, the range of wavelengths sensitive to green and red (or perceived) may become close. have.

As shown in Fig. 6, since the range of wavelengths (M, L) responding to green and red is close due to the abnormality of the cone cells responding to green and red, color vision abnormality when a mixed color of green and red enters the eye. It is difficult for a ruler to recognize whether it is a color close to green or a color close to red. Therefore, it is difficult to distinguish between green and red.

In this case, in the case of a color vision box where it is difficult to distinguish a mixed color of green and red, when a partial range of green or red is blocked, the color vision may help perceive the color of the box.

That is, the color perception of the color vision box can be corrected through the color vision correction optical filter 10 according to the present invention.

Therefore, as shown in FIG. 4, the transmittance of the portion where the transmittance is minimum according to the change of the spacing of the plurality of metal structures 13 has a transmittance of less than 20% in the range of 520 nm to 580 nm with a red-green drug correction function. That is a meaningful result.

On the other hand, human recognition of the light that has passed through the color vision correction optical filter 10 is the sum of the wavelengths recognized by the reaction of the three types of cone cells (L, M, S) in the retina (A) and color vision correction. It can be expressed as the product of the transmittance of the optical filter.

As an embodiment of the present invention, after fixing the length (d) from the center to the boundary of the metal structure 13 at 100 nm and the thickness at 70 nm, the distance between the centers of each metal structure is 360 nm, 380 nm, and 400, respectively. The color vision correction optical filter 10, which is effective in correcting red and green drugs through transmittance simulation when changed to nm at intervals of 20 nm, is not limited thereto. It is also possible to change the length (d), thickness, center-to-center spacing (a), and the shape and material of the metal structure 13 so that the transmittance of the light spectrum in the range of 520 nm to 580 nm and other wavelength ranges is low. . That is, the color vision correction optical filter 10 according to the present invention can control transmittance in various spectra according to the fine pattern arrangement structure of the metal 13.

Below, a lens using the color vision correction optical filter 10 according to the present invention will be presented.

Lenses using the color vision correction optical filter 10 may include a contact lens 100 and a spectacle lens 200.

7 is a plan view showing a contact lens having a color vision correction optical filter according to the present invention. 8 is a side view showing a contact lens having a color vision correction optical filter according to the present invention. 9 is a side view showing receiving grooves formed on two surfaces of a contact lens having a color vision correction optical filter according to the present invention.

7 to 9, the contact lens 100 provided with the color vision correction optical filter 10 according to the present invention includes a light-transmitting

lens

100, 110, and 120 and the color vision correction optical filter 10 described above. Includes. The color vision correction optical filter 10 may be coupled to either one surface or the interior of the contact lens 100, but may be attached to one surface of the contact lens 100, and may be inserted into the contact lens 100. will be.

On the other hand, in the contact lens 100, the first layer 110 and the color vision correction optical filter 10 as lenses in which the color vision correction optical filter 10 and the color vision correction optical filter 10 are coupled to one surface toward one side are disposed on one surface. A second layer 120 as a lens covering the combined first layer 110 to cover the color vision correction optical filter 10 may be further included. The lenses including the first layer 110 and the second layer 120 preferably each have light transmittance.

The color vision correction optical filter 10 is preferably located in the center of the first layer 110 and the second layer 120, but is not limited thereto and may be formed to cover the entire area of the first layer 110 .

On the other hand, the color vision correction optical filter 10 is a filter unit including a microstructure arranged to block a partial range of the light spectrum by being coupled to the filter base 11 and the filter base 11 having light transmission as described above. It includes a filter cover film 15 that is coupled toward the filter base 11 so as to cover the filter part 20 inwardly and has light transmission. The configuration of the color vision correction optical filter 10 as described above is not additionally described.

The contact lens 100 including the first layer 110 and the second layer 120 is preferably in a shape that is curved to fit the curvature of the eyeball.

8 and 9, the color vision correction optical filter 10 is coupled to the first layer 110, and the first layer 110 to which the color vision correction optical filter 10 is coupled is a second layer ( 120) is formed to cover, and a receiving groove 121 in which the color vision correction optical filter 10 is accommodated may be further provided on the inner side of the second layer 120. The receiving groove 121 serves to fix the color vision correction optical filter 10 so that it does not move within the contact lens 100 and at the same time, the outside of the second layer 120 is bent by the color vision correction optical filter 10 Prevent losing. Meanwhile, in FIGS. 8 and 9, the receiving groove 121 is shown to be provided in the second layer 120, but the present invention is not limited thereto, and the receiving groove 121 may be provided outside the first layer 110. have. In addition, the first layer 110 and the second layer 120 may be provided on each of the surfaces facing each other.

Referring to FIG. 10, a spectacle lens 200 having a color vision correction optical filter 10 according to the present invention includes a lens having light transmission (hereinafter referred to as ``glass lenses''), and a color vision correction optic adhered to one surface of the spectacle lens. It includes a filter (10). However, the present invention is not limited thereto, and the color vision correction optical filter 10 may be coupled to be inserted into the spectacle lens 200. The spectacle lens 200 includes a first layer 210 and a second layer 220 that are laminated to each other, preferably between the first layer 210 and the second layer 220 according to the present invention. Accordingly, the color vision correction optical filter 10 is accommodated. However, the present invention is not limited thereto, and the color vision correction optical filter 10 may be adhered to one surface of a single spectacle lens. Since the laminate processing is a general technical content, a detailed description will be omitted.

The color vision correction optical filter 10 of the spectacle lens is coupled to the filter base 11 and the filter base 11 having light transmission, and includes a filter unit 20 including a microstructure arranged to block a partial range of the light spectrum, and It accommodates the filter unit 20 inside and includes a filter cover film 15 having light transmittance. The configuration of the color vision correction optical filter 10 as described above is not additionally described.

The color vision correction optical filter 10 is preferably manufactured to be equal to the total area of the spectacle lens and adhered to one surface of the spectacle lens or accommodated in the first layer 210 and the second layer 220. However, the present invention is not limited thereto, and the color vision correction optical filter 10 may be inserted into a single spectacle lens. In addition, the overall size of the color vision correction optical filter 10 may be adjusted so that the color vision correction optical filter 10 is located only in the center of the spectacle lens.

Meanwhile, as shown in FIG. 10, light (incident light, i) incident on the object B is reflected by the object and is directed toward the eye of the wearer (i'). At this time, light i1 in a partial range of the light spectrum is not transmitted and reflected by the color vision correction optical filter coupled to the spectacle lens, and only the unreflected light i2 is incident on the eye C of the wearer of the spectacle lens.

In the spectacle lens 200 having the color vision correction optical filter 10 according to the present invention, as shown in FIG. 11,

different spectacle lenses

200a and 200b reflecting different wavelengths are respectively provided on the left and right sides of the spectacles. Can be combined. This is the result of recognizing that the abnormalities of the cone cells in the left and right eyes of the color vision box may be different from each other.

On the other hand, the embodiments disclosed in the specification and drawings are merely presented specific examples to aid understanding, and are not intended to limit the scope of the present invention. It is obvious to those of ordinary skill in the art that other modifications based on the technical idea of the present invention may be implemented in addition to the embodiments disclosed herein. Therefore, the color vision correction optical filter according to the present invention is not limited to being applied to contact lenses and spectacle lenses, and may be applied to, for example, various display devices and windows of buildings.

Claims

A light-transmitting filter base;

A filter unit including a microstructure coupled to the filter base and arranged to block a partial range of the light spectrum;

Color vision correction optical filter comprising a.
The method of claim 1, wherein the filter unit

A color vision correction optical filter, characterized in that a plurality of metal structures are patterned on the filter base.
The method of claim 2, wherein the metal structure

Color vision correction optical filter, characterized in that at least one of a circle, oval, triangle, square, hexagonal, bar (bar) shape and irregular shape.
The method of claim 2, wherein the metal structure

A color vision correction optical filter, characterized in that the length from the center to the boundary of one side is 50 nm to 500 nm, and the thickness is 50 nm to 100 nm.
The method of claim 2, wherein the plurality of metal structures

Color vision correction optical filter, characterized in that the spacing between the centers of 110nm to 2㎛.
The method of claim 2, wherein the plurality of metal structures

Color vision correction optical filter, characterized in that at least one of Al, Ag, Au, Cu, Mo, Zn and Ti.
The method of claim 1,

A color vision correction optical filter, characterized in that the transmittance in the wavelength range of 520 nm to 580 nm of the light spectrum is less than 20%.
The method of claim 1,

The color vision correction optical filter, characterized in that the material of the filter base is at least one of glass, plastic, and polymer.
The method of claim 1,

A color vision correction optical filter further comprising a filter cover layer covering the filter unit.
The method of claim 9,

The color vision correction optical filter, characterized in that the material of the filter cover film is at least one of glass, plastic, and polymer.
A light-transmitting lens;

Including; color vision correction optical filter coupled to any one of the inside and one surface of the lens,

The color vision correction optical filter,

A light-transmitting filter base;

A filter unit including a microstructure coupled to the filter base and arranged to block a partial range of the light spectrum;

Lens having a color vision correction optical filter comprising a.
The method of claim 11, wherein the lens

A first layer coupled to one surface of the color vision correction optical filter and having light transmittance;

And a second layer covering the color vision correction optical filter and the first layer and having light transmittance.
The method of claim 11, wherein the color vision correction optical filter

A lens having a color vision correction optical filter further comprising a filter cover layer covering the filter unit.