KR102059166B1 - High contrast lens constructed by mixing with monomer and its manufacturing method - Google Patents

Abstract

An objective of the present invention is to provides a high-contrast lens with a mixed monomer and a manufacturing method thereof which mix and form special dye in a monomer which is a raw material when manufacturing a plastic eyeglass lens to increase the transmission factor of wavelengths of the entire visible light range and lower the transmission factor of a wavelength near 580 nm to absorb and block a crossing portion between green wavelengths lower than 580 nm and red wavelengths higher than 580 nm to increase green and red color contrast sensitivity to maximize clarity. The high-contrast lens with a mixed monomer is constructed by mixing: a monomer which is a raw material of a plastic eyeglass lens; a catalyst mixed in the monomer to react with the monomer to harden the mixture to make a polymer; a release agent mixed in the monomer to easily separate a lens formed in a glass mold for forming a lens; an ultraviolet light absorbent mixed in the monomer to absorb ultraviolet light in a plastic lens converted by the polymer; and red and green absorbing dye called dye-α and mixed in the monomer to have the maximum absorption rate between 550-620 nm in light penetrating the lens after forming the plastic lens. Accordingly, clarity is maximized by high contrast of colors to improve overall visibility and absorb and block ultraviolet wavelengths to prevent eye fatigue and various eye diseases.

Description

High contrast lens constructed by mixing with monomer and its manufacturing method

The present invention relates to a high contrast lens made by mixing in a monomer (monomer), which will be described in more detail, in the manufacture of a plastic lens by mixing a special dye to the monomer to block the light of a specific wavelength The present invention relates to a high-contrast lens of a monomer mixing method and a method of manufacturing the same for increasing the contrast sensitivity of colors on both sides of the wavelength.

In general, in order to block sunlight such as visible light, the color of sunglasses is added to the glasses to reduce the light transmittance. However, this decreases the transmittance of the visible light and the sharpness of the color seen through the glasses is significantly reduced. It had a problem, such as to fall even the visibility as a whole.

As a technique for improving the clarity without lowering the overall transmittance, a film having a pinhole on the surface of a lens by an adhesive as disclosed in Korean Patent Publication No. 22116, 2012 (published on March 12, 2012) There was developed a lens for vision correction glasses formed by adhering a mixed solution of silver nitrate and a reducing solution and then drying to remove the film to improve the clarity, published in Korean Patent No. 201591 (published Jan. 26, 2015) As disclosed, a lens including a lens main body formed to limit light transmission and a slit formed to open to the lens main body and glasses having the same have been developed. However, only a portion of the conventional light is physically blocked to narrow the light through a narrow pinhole or slit. To improve the sharpness by strengthening the muscles of the eye Defined effect is different from each other, even if there was a limit in improving the sharpness can be more enhanced because the contrast between different colors, it may be completely Galicia one color and it had a number of problems such as being unable to view a particular location.

KR 10-2012-0022116 A 2012. 3. 12. KR 10-2015-0009171 A 2015. 1. 26.

In the present invention, to solve the above-mentioned problems of the prior art, a new technology was devised. When manufacturing a plastic spectacle lens, a special dye was mixed and molded into the monomer, which is a raw material, so that the wavelength of the entire visible light region was high and the transmittance was about 580 nm. By absorbing the wavelengths, the transmittance is significantly reduced, so that the intersection between the green line wavelength lower than 580nm and the red line wavelength higher than 580nm is absorbed and blocked to increase the contrast of green and red to maximize the sharpness of the monomer. In order to provide a high contrast lens of the mixing method and a method for manufacturing the same has been completed with the problem to be solved in the invention.

The present invention is to solve the problem of blocking the ultraviolet (UV) of less than 400nm while improving the sharpness by increasing the contrast sensitivity of green and red as described above.

In addition, although not separately described, it is also within the range that can be inferred in view of the following detailed description, claims, and drawings for carrying out the following invention which describes in detail the high-contrast lens of the monomer-mixing method of the present invention and its manufacturing method in detail. Other objects are also included in the overall problem of the present invention.

In the present invention as a specific means for solving the problems of the present invention in the high-contrast lens of the monomer mixing method and its manufacturing method, the high-contrast lens of the monomer mixing method of the present invention is provided with a monomer which is a raw material of the plastic lens And a catalyst for mixing with the monomer to react with the monomer to cure the polymer, and a catalyst for forming the polymer. A UV absorber for absorbing ultraviolet rays from a plastic lens mixed and converted into a polymer is provided, and Dye-α is provided to have a maximum absorption rate between 550 and 620 nm among light transmitted through the lens after being mixed with the monomer and molded into a plastic lens. Red green absorbing dye is provided with a mixed composition The.

The method for producing a high-contrast lens of the monomer mixing method of the present invention is provided with a molding mold of the spectacle lens, the monomer-A of all the monomers of red-green absorption dye and UV-A, UV-B, UV-C One or two or more ultraviolet absorbers and a release agent are added thereto, and the mixture is stirred for 1 hour at room temperature, and the catalyst is added to the monomer-A in the total monomers and the mixture is stirred for 10 to 20 minutes while maintaining 10 to 20 ° C. -A and the UV absorber and the monomer -A and the catalyst was stirred, the remaining monomers of the total monomer -B and monomer -C were added to the mixture while stirring for 10 to 20 minutes while maintaining 10-20 ℃, and then The resin was prepared by degassing by vacuum stirring at 0.13 to 0.4 kPa for 60 minutes, and then stopping the vacuum and injecting the resin into the molding mold using a 1.0-1.2 μm filter while adding nitrogen. It is done.

According to the specific means for solving the above problems, the high-contrast lens of the monomer-mixing method of the present invention and a method of manufacturing the same by using a special dye that absorbs the maximum wavelength of 570 ~ 600nm in the monomer at the time of manufacturing green and visible light It absorbs the wavelength in the 550-620nm region, which is the overlap between red, to maximize the color contrast of green and red wavelengths so that you can see green and red more clearly when wearing glasses. It solves the problem that the overall transmittance drops sharply due to the reduction of the total transmittance caused by the pinhole or the slit or the like, and thus the overall transmittance falls sharply. ) To maximize the sharpness and greatly improve the overall visibility. It is to have the described effects.

In addition, according to the present invention, while absorbing and blocking the specific wavelength band of 550 ~ 620nm in the visible light to improve the clarity, a plurality of UV absorbers are mixed in the monomer to be able to block the absorption of UV wavelengths of less than 400nm, thereby It significantly reduces fatigue and prevents various eye diseases.The color of the special dyes helps to improve the appearance of the lens because the lens has a pale color of the blue system. The effect is a great invention.

1 is a real three-dimensional photograph contrasting the high-contrast lens and the general lens provided by the present invention
FIG. 2 is a graph and a contrast table showing the transmittances of wavelengths of the high contrast lens and the general lens provided by the present invention.

The present invention can improve the sharpness by increasing the contrast sensitivity of the color of both sides of the wavelength by blocking the light of a specific wavelength by mixing a special dye when manufacturing the plastic lens to the monomer (monomer) which is a raw material of the plastic eyeglass lens. In order to provide a high contrast lens of the monomer mixing method and a manufacturing method thereof, which will be described in more detail with reference to the following drawings, the accompanying drawings and the contents of the technical idea of the present invention The scope of the present disclosure is merely an example for easily describing the scope, and the terms used are also for describing the embodiments in detail and should not be construed as being limited to the terms.

The high-contrast lens of the monomer-mixing method of the present invention and a method of manufacturing the same are shown in FIG. 1 as a high-contrast lens (HI-CONTRAST LENS) of the present invention which is lightly blue and transparent (ultraviolet ray blocking) lens ( NORMAL LENS (lens produced and sold by the applicant's company) in contrast to the transmittance for each wavelength band as shown in Figure 2, according to the high-contrast lens of the present invention shows that the transmittance suddenly drops sharply at the wavelength range of 550 ~ 620nm in the specific region It can be seen that, in particular, the transmittance is lowest at 570 to 600 nm.

The high contrast lens of the monomer mixing method of the present invention is a polyisocyanate compound, an acryl compound, a styrene compound, an acrylate compound, an allyl which becomes a urethane resin. Any one of a carbonate-based compound or an episulfide compound is a plastic lens used as a monomer as a main raw material, and at this time, a reddish green called Dye-α having a maximum absorption between 550 nm and 620 nm as a special dye. The absorption dye is mixed to absorb and block wavelengths in the 550-620nm range where the green and red wavelengths overlap in the visible ray of light, thereby greatly improving the contrast sensitivity of green and red to maximize clarity. .

As described above, the high contrast lens of the present invention, which is configured to absorb and absorb a specific wavelength of 550 to 620 nm, is mixed with a monomer to be a raw material of a plastic lens and reacted with a monomer, and a catalyst for making a polymer is mixed. The release agent is mixed so that the lens can be easily separated after molding in the glass-mold, and the UV absorber is mixed with the monomer in advance so as to absorb the ultraviolet rays from the polymer-converted plastic lens. Among the light passing through the lens, Dye-α, which has a maximum absorption rate between 550-620 nm, is pre-mixed with the monomer. The red green absorption dye absorbs a wavelength of 550-620 nm in porphyrin (Porphyrin). Any one or two of a compound, a cyanine compound, and a squarylium compound The above is made by mixing.

In more detail, the monomer is a polyisocyanate compound, an acrylic compound, a styrene compound, an acrylate compound, an allyl carbonate, which becomes a urethane resin. Either an allyl carbonate compound or an episulfide compound is the main raw material.

Such monomers include monomer-A consisting of 2,5 (or 2,6) -Diisocyanate methylbicyclo (2,2,1) heptane, monomer-B consisting of Pentaerythritol tetrakis (3-mercaptopropionate), and 2,3-Bis ( Monomer-C consisting of (2-mercaptoethyl) thio) -1-propanethiol is to be mixed.

In addition, the ultraviolet absorber is made by mixing any one or two or more of A-type UV-A, B-type UV-B, C-type UV-C having a different molecular weight.

The UV-A is a benzotriazole-based UV absorber having a molecular weight of 250 ~ 330 g / mol, typically 2- (2-hydroxy-5-tert-octylphenyl) -2H-benzotriazole, 2- (5-tert) -butyl-2-hydroxyphenyl) -2H-benzotriazole, 2- (5-tert-octyl-2-hydroxyphenyl) -2H-benzortriazole, and the like.

UV-B is a benzotriazole-based UV absorber having a molecular weight of 300 ~ 320g / mol, typically 2- (3-tert-butyl-2-hydroxy-5-methylphenyl) -5-chloro-2H- benzotriazole, 2- (5-chloro-2H-benzotriazole-2-yl) -6- (1,1-dimethylethyl) -4-methyl-Phenol, 2-tert-butyl-6- (5-chloro-2H-benzotriazol A similar ultraviolet absorber such as -2-yl) -4-methylphenone is an example.

The UV-C is a benzotriazole-based UV absorber having a molecular weight of 430-450 g / mol, and typically 2- (2H-Benzotriazol-2-yl) -6 (1-methyl-1-phenylethyl) -4 And-(1,1,3,3-tetramethylbutyl) phenol.

As described above, the UV absorbers having various types block the absorption of UV rays having a wavelength of 400 nm or less from the spectacle lenses of plastics converted into polymers by mixing a polymerization initiator with monomers. It is also configured to block absorption of wavelengths in the ~ 620nm range, and has the function of improving the sharpness of the spectacle lens and protecting the eyes from ultraviolet rays.

One example of such a high contrast lens of the present invention is monomeric A consisting of 2,5 (or 2,6) -Diisocyanate methylbicyclo (2,2,1) heptane-A 50.6 ± 5% by weight, and Pentaerythritol tetrakis (3-mercaptopropionate 100 parts by weight of a total of monomers containing 23.9 ± 5% by weight of monomer-B and 25.5 ± 5% by weight of monomer-C consisting of 2,3-Bis ((2-mercaptoethyl) thio) -1-propanethiol. 0.0275 parts by weight or 0.04 parts by weight of a catalyst consisting of dibutyltin dichloride is added thereto, and 0.08 parts by weight of a release agent consisting of an alkyl phosphate ester is mixed therewith, and 2- (2-hydroxy-5- UV-A UV absorber consisting of tert-octylphenyl) -2H-benzotriazole 0.02-3 parts by weight and UV- consisting of 2- (3-tert-butyl-2-hydroxy-5-methylphenyl) -5-chloro-2H-benzotriazole B UV absorber 0.02-0.7 parts by weight and 2- (2H-Benzotriazol-2-yl) -6 (1-methyl-1-phenylethyl) -4- (1,1,3,3-tetramethylbutyl) phenol UV-C UV absorber consisting of 0.02 to 3 parts by weight, but mixed with any one or two of porphyrin-based compounds, cyanine-based compounds, squarylium-based compounds in visible light 0.2 ~ 3 × 10 ^-4 parts by weight of red green absorbing dye called Dye-α absorbing wavelength of 550 ~ 620nm is mixed and then injected into a glass molding mold and molded into a plastic spectacle lens.

In the manufacturing method of the ultraviolet and blue light blocking functional spectacle lens of the present invention mixed composition as described above is provided with a molding mold, a casting process of molding a plastic lens by injecting a resin and then polymerizing the plastic lens, and the casting process In the present invention, a hard coating process of hard coating and heat treatment may be further added to the surface of the lens, or a multi coating process of vacuum depositing by attaching the hard coated lens made of the hard coating process may be added. In the casting process, a molding mold is provided to inject the resin, which is mixed as described above, into the mold, and then polymerize the plastic lens.

Such a method for producing a high-contrast lens of the monomer mixing method of the present invention comprises a molding mold of the spectacle lens, and then any of the red-green absorbing dye and UV-A, UV-B, UV-C to the monomer-A of the total monomers One or more UV absorbers and a release agent are added together to facilitate the separation of the lens from the molding mold after molding, and then stirred at room temperature for 1 hour.

Thereafter, the catalyst is added to Monomer-A of all the monomers, and the mixture is stirred for 10 to 20 minutes while maintaining 10 to 20 ° C. The monomer-A and the ultraviolet absorber are stirred and the monomer-A and the catalyst are stirred. Add the remaining monomer-B and monomer-C, and keep stirring for 10-20 minutes while maintaining 10 ~ 20 ℃.

After the monomer-B and the monomer-C were added as described above, the mixture was vacuum stirred at 0.13 to 0.4 kPa for 60 minutes, and then degassed to prepare a resin. The resin is injected into the molding mold using a 1.2 μm filter.

The high-contrast lens of the monomer mixing method prepared by mixing as described above and injected into the molding mold in the casting process is prepared by the red-green absorbing dye called Dye-α mixed with the monomer as compared to the conventional lens as shown in FIG. The transmittance drops sharply in the wavelength range of 550 ~ 620nm, but the transmittance is the lowest at the wavelength of 570 ~ 600nm, so that the wavelength of the part where the green system wavelength around 550nm and the red system wavelength around 600nm overlap is absorbed and blocked. The high visible light transmits the visible light with high contrast, and the overall transmittance is high, so that the overall visibility is greatly improved. In addition, one or more UV absorbers of UV-A, UV-B, or UV-C mixed in the monomer Prevents eye fatigue and improves eye health by blocking ultraviolet rays when worn. It is.

As described above in the detailed description of the present invention has been described with respect to the most preferred embodiment of the present invention, various modifications may be made within the scope not departing from the technical scope of the present invention, the protection scope of the present invention is therefore Not limited to the examples, the scope of protection from the description of the claims and the equivalent technical means to those described below will be recognized.

Claims (5)

A raw material of plastic lenses, Monomer-A consisting of 2,5 (or 2,6) -Diisocyanate methylbicyclo (2,2,1) heptane-A 50.6 ± 5 wt%, Monomer-B consisting of Pentaerythritol tetrakis (3-mercaptopropionate) 100 parts by weight of 23.9 ± 5% by weight of monomer-C 25.5 ± 5% by weight of 2,3-Bis ((2-mercaptoethyl) thio) -1-propanethiol;
0.0275 parts by weight or 0.04 parts by weight of a catalyst comprising dibutyltin dichloride, which is mixed with the monomer and reacted with the monomer to cure to prepare a polymer;
0.08 parts by weight of a release agent made of an alkyl phosphate ester which is easily mixed with the monomer to form a lens in a glass-mold to form a lens;
One or two or more of 0.02 to 3 parts by weight of UV-A, 0.02 to 0.7 parts by weight of UV-B, and 0.02 to 3 parts by weight of UV-C are mixed to absorb ultraviolet rays from the plastic lens mixed with the monomer and converted into polymer. UV absorbers;
Dye-α 0.2-3 × 10 ^-4 weight in which any one or two or more of porphyrin-based compounds, cyanine-based compounds, and squarylium-based compounds are mixed to absorb wavelengths of 550-620 nm Negative red green absorption dyes;
The high contrast lens of the monomer mixing method characterized in that the mixed composition.
The method according to claim 1;
The ultraviolet absorber,
A benzotriazole UV absorber with a molecular weight of 250-330 g / mol, 2- (2-hydroxy-5-tert-octylphenyl) -2H-benzotriazole, 2- (5-tert-butyl-2-hydroxyphenyl)- UV-A as one of 2H benzotriazole, 2- (5-tert-octyl-2-hydroxyphenyl) -2H benzortriazole;
A benzotriazole-based UV absorber with a molecular weight of 300-320 g / mol, 2- (3-tert-butyl-2-hydroxy-5-methylphenyl) -5-chloro-2H-benzotriazole, 2- (5-chloro -2H-benzotriazole-2-yl) -6- (1,1-dimethylethyl) -4-methyl-Phenol, 2-tert-butyl-6- (5-chloro-2H-benzotriazol-2-yl) -4- UV-B as one of methylphenone;
A benzotriazole UV absorber with a molecular weight of 430-450 g / mol, 2- (2H-Benzotriazol-2-yl) -6 (1-methyl-1-phenylethyl) -4- (1,1,3, UV-C with 3-tetramethylbutyl) phenol;
The high contrast lens of the monomer mixing method, characterized in that any one or two or more of them are mixed.
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