High-contrast sunglasses and preparation method thereof

Abstract

The invention relates to the field of glasses, in particular to high-contrast sunglasses and a preparation method thereof. The preparation method of the high-contrast sunglasses comprises the following steps: mixing a resin monomer, an absorbent and a catalyst, carrying out vacuum stirring, and then carrying out water circulation heat preservation to obtain a first product; carrying out thermosetting molding on the first product to obtain a second product; carrying out annealing treatment on the second product to obtain a third product; and dyeing the third product, and sequentially plating a hard layer and a film layer to obtain the high-contrast sunglasses. According to the high-contrast sunglasses provided by the invention, in a low-illumination environment, the contrast ratio of visual objects is improved, and the objects can be seen more clearly; reflected light is reduced, virtual images are eliminated, and the dizziness caused by visual fatigue is relieved; the influence of red light on vision is reduced, and the problem that sudden red light does not adapt to vision is solved.

Description

Technical Field

[0001] This invention relates to the field of eyewear, and more specifically, to a high-contrast sunglasses and a method for manufacturing the same. Background Technology

[0002] In the visible light spectrum, blue light with shorter wavelengths (approximately 400-500 nanometers) has high energy and is more prone to Rayleigh scattering in the air, which is why the sky is blue. In low-light environments such as cloudy days, foggy days, dawn, or dusk, the ambient light is filled with a large amount of this scattered blue light. This stray blue light can coat objects, leading to increased visual noise, decreased contrast, and a hazy, indistinct appearance of scenery.

[0003] When light shines on the lens surface, due to the difference in refractive index between the lens material (resin or glass) and air, a portion of the light (approximately 4%-8%) is reflected back. This reflected light can cause: ① "Ghosting" and virtual images: especially when looking at car headlights or streetlights at night, the light reflected from the inner surface of the lens can form interfering light spots on the retina; ② Reduced light transmittance: reflection reduces the amount of light entering the eye, making objects appear darker; ③ Aesthetic impact: strong reflections from the lens can obstruct the wearer's eyes, affecting communication. To address these issues, a green light wavelength of around 585nm, which is most sensitive to the human eye, is typically selected.

[0004] In certain environments, high-brightness or high-saturation red light can be extremely glaring, especially against a dark background (such as brake lights or red warning lights at night). This is because the pupils of the human eye dilate in dark environments, and sudden bright light (even red light) can cause discomfort and temporary visual disturbances. Summary of the Invention

[0005] In view of this, the present invention aims to provide a high-contrast sunglasses and a method for manufacturing the same, so as to solve the problem of manufacturing high-contrast functional lenses in a high-refractive-index polyurethane lens substrate in the prior art.

[0006] To solve the above-mentioned technical problems, this application is implemented as follows:

[0007] This invention provides a method for manufacturing high-contrast sunglasses, comprising the following steps:

[0008] The resin, absorbent, and catalyst are mixed and stirred under vacuum with water circulation to obtain the first product.

[0009] The first product is thermoset to obtain the second product;

[0010] The second product is annealed to obtain the third product;

[0011] After dyeing the third product, a hard layer and a film layer are deposited sequentially to obtain high-contrast sunglasses;

[0012] The absorption bands of the absorbent are 480nm, 585nm and 690nm.

[0013] In some specific embodiments, the mass ratio of the resin monomer, absorbent and catalyst is 100:0.001-0.025:0.05-0.1.

[0014] In some specific embodiments, the absorbent includes phthalocyanine dyes, anthocyanin dyes, or azo nickel metal compounds.

[0015] In some specific embodiments, the resin includes a polyurethane resin;

[0016] The polyurethane resin includes MR-8plus and / or MR-7.

[0017] In some specific embodiments, the catalyst includes an organotin catalyst;

[0018] All organotin catalysts include dibutyltin dichloride.

[0019] In some specific embodiments, the pressure of the vacuum is -0.09 to -0.1 MPa;

[0020] The conditions for water circulation and heat preservation are as follows: water temperature is 8-12℃, heat preservation time is 2-3h, and stirring speed is 400-600rpm.

[0021] In some specific embodiments, the thermosetting process includes: holding at 20°C for 5 hours, then raising the temperature to 55°C for 10 hours, then raising the temperature to 105°C for 3 hours, holding at 105°C for 2 hours, and then cooling down to 80°C for 1 hour.

[0022] The annealing process includes: heating at 30°C for 1 hour to 100-120°C, then holding at 100-120°C for 2-4 hours, and finally cooling down to 60°C for 0.5 hours.

[0023] In some specific embodiments, the hard layer includes a CP162 layer and a CC1602 layer;

[0024] The thickness of the CP162 layer is 0.75–1.25 μm;

[0025] The thickness of the CC1602 layer is 0.75–1.25 μm;

[0026] The film layer includes alternating layers of silicon dioxide and zirconium dioxide;

[0027] The total number of silicon dioxide layers is 3 to 5;

[0028] The total number of zirconium dioxide layers is 3 to 5;

[0029] The thickness of the single layer of silicon dioxide is 30–80 nm;

[0030] The thickness of the zirconium dioxide monolayer is 30–80 nm.

[0031] In some specific embodiments, the membrane layer also includes a waterproof layer;

[0032] The waterproof layer comprises the following raw materials in parts by weight:

[0033] 60-70 parts of 304 stainless steel, 20-30 parts of iron, 1-3 parts of 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether and 1-3 parts of ethyl nonafluorobutyl ether;

[0034] The thickness of the waterproof layer is 30–80 nm.

[0035] A second aspect of the present invention also provides sunglasses prepared by the above-described method for preparing high-contrast sunglasses.

[0036] The beneficial technical effects of the present invention through the above technical solution are as follows:

[0037] (1) 480 band absorption: In low-light environments, it improves the contrast of objects and makes things clearer.

[0038] (2) 585 nm band absorption: mainly reduces reflected light, eliminates virtual images, and alleviates the dizziness caused by visual fatigue.

[0039] (3)690 band absorption: mainly reduces the impact of red light on vision and improves the problem of visual maladaptation caused by sudden red light. Attached Figure Description

[0040] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the following detailed description to explain the invention, but do not constitute a limitation thereof.

[0041] Figure 1 This is a spectral diagram of the ultraviolet and visible light performance of the high-contrast sunglasses prepared in Example 1.

[0042] Figure 2 This is a spectral diagram of the ultraviolet and visible light performance of the high-contrast sunglasses prepared in Example 2.

[0043] Figure 3 This is a spectral diagram of the ultraviolet and visible light performance of the high-contrast sunglasses prepared in Example 3.

[0044] Figure 4 This is a spectral diagram of the ultraviolet and visible light performance of the high-contrast sunglasses prepared in Example 4.

[0045] Figure 5 This is a spectral diagram of the ultraviolet and visible light performance of the high-contrast sunglasses prepared in Example 5. Detailed Implementation

[0046] In the following embodiments, CP162 was purchased from SDC Technology Co., Ltd., and its model number is CP162.

[0047] In the following embodiments, CC1602 was purchased from SDC Technology Co., Ltd., and its model number is CC1602.

[0048] In the following examples, the phthalocyanine dye was purchased from Jiangxi Lote Chemical Co., Ltd., and the model was VL480.

[0049] In the following examples, the cyanine dye was purchased from Jiangxi Lote Chemical Co., Ltd., and the model number is VL595.

[0050] In the following examples, the azo nickel metal compound was purchased from Jiangxi Lote Chemical Co., Ltd., and the model number was 680TW.

[0051] In the following examples, the phthalocyanine blue dye was purchased from Wuxi Yuncheng Chemical Co., Ltd., and the product name is Blue.

[0052] Example 1

[0053] A method for manufacturing high-contrast sunglasses includes the following steps:

[0054] Based on the mass of MR-8plus polyurethane resin, 45 ppm phthalocyanine dye, 35 ppm anthocyanin dye, 15 ppm azo nickel metal compound, and 0.05 parts dibutyltin dichloride catalyst were added to 100 parts of MR-8plus polyurethane resin to obtain a mixture; the mixture was stirred at 500 rpm for 2 hours under -100 kp vacuum and 10°C cold water circulation to obtain the first product.

[0055] The first product is cast into a mold and placed in a thermosetting furnace. It is kept at 20°C for 5 hours, then heated to 55°C for 10 hours, then heated to 105°C for 3 hours, kept at 105°C for 2 hours, and then cooled to 80°C for 1 hour to perform thermosetting, thus obtaining the second product.

[0056] After the second product is molded and edged, it is heated to 110°C at 30°C for 1 hour, held at 110°C for 3.5 hours, and then cooled to 60°C for 0.5 hours for annealing to obtain the lens.

[0057] The lens was immersed in phthalocyanine blue dye at 90°C for 15 minutes for dyeing, then immersed in a 1.5 wt% CP162 solution for 2 minutes, removed and cured at 80°C for 5 minutes, then immersed in a 1.5 wt% CC1602 solution for 2 minutes, removed and cured at 100°C for 4 hours. The dyed lens was then coated with a 1 μm thick CP162 hard layer and a 1 μm thick CC1602 hard layer sequentially. Finally, a silicon dioxide layer and a... A zirconium dioxide layer is formed on a CC1602 hard layer, consisting of three silicon dioxide layers. Each silicon dioxide layer and each zirconium dioxide layer is 50 nm thick. Finally, a 50 nm thick waterproof layer is deposited, comprising 65 parts of 304 stainless steel, 25 parts of iron, 2 parts of 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether, and 2 parts of ethyl nonafluorobutyl ether to obtain high-contrast sunglasses.

[0058] Example 2

[0059] A method for preparing high-contrast sunglasses differs from Example 1 in that:

[0060] The amount of phthalocyanine dye added is 100 ppm.

[0061] Everything else is the same as in Example 1.

[0062] Example 3

[0063] A method for preparing high-contrast sunglasses differs from Example 1 in that:

[0064] The amount of phthalocyanine dye added is 200 ppm.

[0065] Everything else is the same as in Example 1.

[0066] Example 4

[0067] A method for preparing high-contrast sunglasses differs from Example 2 in that:

[0068] The soaking time in phthalocyanine blue dye is 30 minutes.

[0069] Everything else is the same as in Example 2.

[0070] Example 5

[0071] A method for preparing high-contrast sunglasses differs from Example 1 in that:

[0072] Replace MR-8plus polyurethane resin with MR-7.

[0073] Everything else is the same as in Example 1.

[0074] The high-contrast sunglasses prepared in Examples 1-5 above were subjected to spectral performance tests in ultraviolet and visible light. The test results are as follows: Figures 1-5 As shown.

[0075] Figure 1 This is a spectral diagram of the ultraviolet and visible light performance of the high-contrast sunglasses prepared in Example 1.

[0076] Figure 2 This is a spectral diagram of the ultraviolet and visible light performance of the high-contrast sunglasses prepared in Example 2.

[0077] Figure 3 This is a spectral diagram of the ultraviolet and visible light performance of the high-contrast sunglasses prepared in Example 3.

[0078] Figure 4 This is a spectral diagram of the ultraviolet and visible light performance of the high-contrast sunglasses prepared in Example 4.

[0079] Figure 5 This is a spectral diagram of the ultraviolet and visible light performance of the high-contrast sunglasses prepared in Example 5.

[0080] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for the production of high-contrast sunglasses, characterized in that, The method comprises the following steps: mixing resin, absorbent and catalyst, and stirring under vacuum and water circulation, to obtain a first product; thermosetting molding the first product to obtain a second product; annealing the second product to obtain a third product; dyeing the third product, and then plating a hard layer and a film layer in sequence to obtain a high-contrast sunglass; the absorbent has absorption bands of 480 nm, 585 nm and 690 nm.

2. The method for producing high-contrast sunglasses according to claim 1, characterized in that, the mass ratio of the resin monomer, the absorbent and the catalyst is 100:0.001-0.025:0.05-0.

1.

3. The method of claim 1, wherein the high-contrast sunglass is prepared by using a material having a refractive index of 1.5 or more. the absorbent comprises phthalocyanine dye, fluoran dye or azo nickel metal compound.

4. The method of claim 1, wherein the high-contrast sunglass is prepared by using a material having a refractive index of 1.5 or more. the resin comprises polyurethane resin; the polyurethane resin comprises MR-8plus and / or MR-7.

5. The method of claim 1, wherein the high-contrast sunglass is prepared by using a material having a refractive index of 1.5 or more. the catalyst comprises organic tin catalyst; all the organic tin catalysts comprise dibutyltin dichloride.

6. The method of claim 1, wherein the high-contrast sunglass is prepared by the steps of: the pressure of the vacuum is -0.09 to -0.1 MPa; the water circulation and heat preservation conditions are that the temperature of the water is 8-12℃, the heat preservation time is 2-3h, and the stirring speed is 400-600rpm.

7. The method of claim 1, wherein the high-contrast sunglass is prepared by a process comprising: the thermosetting molding process comprises the following steps: heat preservation at 20℃ for 5h, then heating to 55℃ for 10h, then heating to 105℃ for 3h, heat preservation at 105℃ for 2h, and then cooling to 80℃ for 1h; the annealing process comprises the following steps: heating to 100-120℃ at 30℃ for 1h, then heat preservation at 100-120℃ for 2-4h, and finally cooling to 60℃ for 0.5h.

8. The method of claim 1, wherein the high-contrast sunglass is prepared by a process comprising: the hard layer comprises a CP162 layer and a CC1602 layer; the thickness of the CP162 layer is 0.75-1.25μm; the thickness of the CC1602 layer is 0.75-1.25μm; the film layer comprises silica layers and zirconium dioxide layers arranged alternately; the total number of the silica layers is 3-5 layers; the total number of the zirconium dioxide layers is 3-5 layers; the single-layer thickness of the silica layers is 30-80nm; the single-layer thickness of the zirconium dioxide layers is 30-80nm.

9. The method of claim 1, wherein the high-contrast sunglass is prepared by a process comprising: the film layer further comprises a waterproof layer; the waterproof layer comprises the following raw materials by mass: 60-70 parts of 304 stainless steel, 20-30 parts of iron, 1-3 parts of 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether and 1-3 parts of ethyl nonafluorobutyl ether; the thickness of the waterproof layer is 30-80nm.

10. The sunglass prepared by the method of any one of claims 1-9.

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