Polarized photochromic lens capable of being worn all day long and processing technology of polarized photochromic lens

Abstract

The invention discloses a polarized photochromic lens capable of being worn around the clock, and the lens comprises a substrate body which comprises a front substrate, a rear substrate, and a middle polarized diaphragm. Wherein the surface of the polarizing film is sequentially provided with a central circle area, a second circle area, a third circle area and an edge circle area which are annularly arranged, and the second circle area and the third circle area are provided with a plurality of concave or convex regular triangle units; the photochromic film layer is sprayed on the surface of the front substrate, the thickness of the photochromic film layer is gradually reduced from the center circle area to the edge circle area, and the surface of the photochromic film layer is provided with light enhancement particle areas corresponding to the regular triangle units. According to the invention, the inner polarizing film is matched with the outer photochromic film, the spraying process is adopted, and the progressive film baffle is combined, so that the lens with the non-uniform color-changing film is prepared, and the lens can better adapt to all-weather change from outdoor to indoor, has a larger visual field, and is more suitable for all-weather change from outdoor to indoor. And the regular triangle-matched intensifying particle area is matched with the polaroid, so that the light color intensifying effect can be enhanced, the conversion rate is improved, the switching is efficient, the wearing is comfortable, and the strong light interference is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of lenses, and more specifically, relates to a polarized color-changing lens that can be worn all-weather and its processing technology. Background Art

[0002] Sunglasses, also known as sunshades. In life, there are too many light sources that produce harmful light, especially sunlight; the light emitted from sunlight includes visible light, infrared rays, ultraviolet rays, etc. When a person is in the sun, they usually adjust the pupil size to regulate the light flux. When the light intensity exceeds the adjustment ability of the human eye, it will cause damage to the human eye. Sunglasses can effectively filter out part of the light, preventing our eyes from being burned by strong light, and can also block ultraviolet rays from damaging the cornea and retina.

[0003] Currently, some of the market are dyed sunglass lenses. Such lenses mainly rely on the absorption of light by dye particles. The most common process is to soak the resin lens in a liquid containing a dyeing substance, heat the liquid, and the molecular gaps on the surface of the resin lens expand due to heat. The dye particles dissolved in the liquid enter the molecular gaps, and after cooling, the dyeing is completed. The dyeing layer on the lens surface will absorb light of different wavelengths according to different dye particles. The darker the dyeing, the more dye particles enter the lens, and the better the light absorption.

[0004] At the same time, there are also some color-changing lenses on the market. During the manufacturing process, a color-changing factor is incorporated into the resin. Under the irradiation of ultraviolet rays or short-wave visible light in the sun, the color deepens, the light transmittance decreases, and it fades and returns to normal in the room or in the dark, and the light transmittance increases. There is also a process for film color-changing lenses, and its main process is to make a color-changing film about 5μm thick on the front surface of a normal colorless and transparent substrate. In comparison, the color-changing depth, fading speed, and color-changing uniformity of film color-changing lenses are better than those of the substrate. At the same time, film color-changing can be combined with any substrate, unlike substrate color-changing which is limited by the substrate material. Such color-changing lenses can be used as both sunglasses and normal transparent lenses.

[0005] Generally, different sunglasses are selected according to different scenarios. Dark sunglasses are selected outdoors with strong light, and light or colorless glasses are selected indoors in the dim light, thus meeting the all-weather wearing requirements. Color-changing glasses can meet part of the needs, and progressive color-dyed lenses can also meet part of the needs. The dyeing process is that the upper part of the lens is dyed darker and the lower part is lighter or undyed, and the dyeing depth gradually becomes lighter from top to bottom. Each of these two types of lenses has its own advantages and disadvantages. Among them, due to the fading speed problem of color-changing lenses, there will be a period of fading time when moving from a bright outdoor environment to a dim indoor environment, during which the eyes do not have a bright and clear field of vision. For progressive color-dyed lenses, only the area with lighter or undyed lower part of the lens can be used indoors, and its field of vision is smaller. Summary of the Invention

[0006] In view of this, the technical problem to be solved by the present invention is to provide a polarization-changing lens that can be worn all day long and its processing technology, aiming at the problem that the light of the color-changing sunglasses becomes darker from outdoors to indoors and the trouble of realizing all-day wearing changes.

[0007] To solve the above technical problems, the present invention discloses a polarization-changing lens that can be worn all day long, which includes: A substrate body, which includes a front substrate, a rear substrate, and a polarizing film cured between the front substrate and the rear substrate; wherein the surface of the polarizing film has a centrally located circular area, a second circular area, a third circular area, and an edge circular area arranged in a ring in sequence, and a plurality of concave or convex equilateral triangle units are arranged in the second circular area and the third circular area; A photochromic film layer sprayed on the surface of the front substrate, the thickness of the photochromic film layer decreases from the central circular area to the edge circular area, and the surface has a light-enhancing particle area corresponding to the equilateral triangle units; A hardening layer dip-coated on the surface of the photochromic film layer and the surface of the rear substrate; and An anti-reflection layer plated on the surface of the hardening layer.

[0008] According to an embodiment of the present invention, the side length of the above-mentioned equilateral triangle unit is 1.2 mm.

[0009] According to an embodiment of the present invention, the above-mentioned photochromic film layer is a coating containing a photochromic material, and its thickness gradually decreases from 5 ± 0.5 μm to 0 μm from the central circular area to the edge circular area.

[0010] According to an embodiment of the present invention, the above-mentioned light-enhancing particle area is set as a silver halide film layer evaporated by an electron gun, and the thickness of the light-enhancing particle area is 20-80 nm.

[0011] According to an embodiment of the present invention, the above-mentioned anti-reflection layer is a silica and alumina dielectric film, with a total thickness of 500 ± 45 nm, and 7-11 layers are provided, which are alternately formed by silica and alumina.

[0012] The present invention also discloses a processing technology for a polarization-changing lens that can be worn all day long, including: S1. Provide a polarizing film. The surface of the polarizing film has a centrally located circular area, a second circular area, a third circular area, and an edge circular area arranged in a ring in sequence. Use a laser to mark out equilateral triangle units, place the polarizing film in the center of a rubber ring for fixation, and then use a glue gun to fill resin on the front and back sides of the polarizing film, and cure and form the substrate body; S2. Treat the cured substrate body with a sodium hydroxide solvent, and then ultrasonically clean the treated lens; S3. After cleaning, dry it to remove the remaining moisture; S4. The clean lens is treated by plasma to increase surface activity; S5. Put the treated lens into a specific spraying tooling; S6. Put the tooling into a spraying machine. After installing the progressive film layer baffle, spray the photochromic film layer. The thickness of the film layer decreases gradually from 5μm to 0μm from the central circular area to the edge circular area; S7. Put the sprayed lens into an oven to cure the photochromic film layer; S8. Wash the cured lens and put it into a hardening machine. Prepare a hardening layer with a thickness of 2.5um through immersion and lifting; S9. Put the prepared hardening layer into an oven for high-temperature curing; S10. After curing, put the lens into an oven at 70°C for heat preservation for 20 minutes; S11. Put the heat-preserved lens into a coating machine to prepare for coating an anti-reflection layer; After the coating is completed, the inspection after lens coating can be carried out.

[0013] According to an embodiment of the present invention, the above-mentioned progressive film layer baffle is set as a template with gradient holes, and the aperture of the template gradually decreases from the center to the outside.

[0014] Compared with the prior art, the present invention can obtain the following technical effects: Through the cooperation of the inner polarizing film and the outer photochromic film layer, using the spraying process, combined with the progressive film layer baffle, a lens with a non-uniform color-changing film layer is prepared, which can better adapt to the all-weather change from outdoors to indoors, has a larger field of view, and the light-enhancing particle area with an equilateral triangle configuration cooperates with the polarizer to enhance the light-enhancing and color-changing effect, improve the conversion rate, have efficient switching, comfortable wearing, and reduce strong light interference.

[0015] Of course, it is not necessary for any product implementing the present invention to achieve all the above-mentioned technical effects simultaneously. Description of the Drawings

[0016] The drawings described herein are used to provide a further understanding of the present invention, and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings: Figure 1 It is a schematic diagram of a polarizing and color-changing lens that can be worn all-weather according to an embodiment of the present invention; Figure 2 It is a schematic diagram of a polarizing film according to an embodiment of the present invention. Reference Signs of the Drawings

[0017] Front substrate 10, polarizing film 20, rear substrate 30, photochromic film layer 40, hardening layer 50, antireflection layer 60, central circular area 71, second circular area 72, third circular area 73, edge circular area 74, regular triangular unit 75. Detailed implementation mode

[0018] The following will combine the drawings and embodiments to elaborate in detail on the implementation mode of the present invention, so as to fully understand how the present invention uses technical means to solve technical problems and achieve the realization process of technical effects and implement accordingly.

[0019] Please refer to Figure 1 And Figure 2 , Figure 1 is a schematic diagram of a polarizing and color-changing lens that can be worn all-weather according to an embodiment of the present invention, Figure 2 is a schematic diagram of the polarizing film according to an embodiment of the present invention.

[0020] As shown in the figure, a polarizing and color-changing lens that can be worn all-weather includes: a substrate body, the substrate body includes a front substrate 10, a rear substrate 30, and a polarizing film 20 cured between the front substrate 10 and the rear substrate 30; wherein the surface of the polarizing film 20 sequentially has a centrally arranged central circular area 71, a second circular area 72, a third circular area 73, and an edge circular area 74, and a plurality of regular triangular units 75 with depressions or protrusions are arranged in the second circular area 72 and the third circular area 73; a photochromic film layer 40 sprayed on the surface of the front substrate 10, the thickness of the photochromic film layer 40 decreasing from the central circular area 71 to the edge circular area 74, and having a light-enhancing particle area corresponding to the regular triangular unit 75 on the surface; a hardening layer 50 dip-coated on the surface of the photochromic film layer 40 and the surface of the rear substrate 30; and an antireflection layer 60 plated on the surface of the hardening layer 50.

[0021] In an embodiment of the present invention, the polarizing film 20 is made of PVA material to provide a polarizing effect. The diameter of the central circular area 71 is 9 mm, corresponding to the central correction viewing area. The second circular area 72 and the third circular area 73 surround the outer end, which is the peripheral main viewing area, and the edge circular area 74 is the peripheral edge end. A plurality of regular triangular units 75 are arranged in the second circular area 72 and the third circular area 73, with depressions or protrusions provided to enhance the polarizing effect.

[0022] Preferably, the side length of the regular triangular unit 75 is 1.2 mm, densely arranged, and the interval can be designed to be 1.5 - 2 mm.

[0023] The photochromic film layer 40 is sprayed with a photochromic liquid, and its thickness decreases from the central circular area 71 to the edge circular area 74, providing a gradient effect, which can meet the all-weather indoor and outdoor use, and the color-changing rate is more gentle. Configuration of the photochromic coating (1 kg ratio)

[0024] In the above table: DMF represents N,N-dimethylformamide, NP-1, NP-2, NP-3, and NP-4 are all photochromic materials, NP-1 represents 3,3-diphenyl-3H-[2,1-b]naphthopyran, NP-2 represents 3,3-diphenyl-6-morpholinyl-3H-[2,1-b]naphthopyran, NP-3 represents 3,3-diphenyl-5-(N-p-chlorophenyl)formamido-3H-[2,1-b]naphthopyran, and NP-4 represents 2-(4-dimethylamino)phenyl-2-(4-methoxyphenyl)-5-hydroxymethyl-9-pyrrolyl-2H-[1,2-b]naphthopyran. In addition, the light stabilizers, antioxidants, surface leveling agents, and catalysts used in the above table are all common reagents in the market.

[0025] In addition, the photochromic film layer 40 also has a light-enhancing particle area corresponding to the equilateral triangle unit 75, which is used to enhance the photochromic effect at the polarization. Preferably, the light-enhancing particle area is set as a silver halide film layer evaporated by an electron gun, and the thickness of the light-enhancing particle area is 20-80nm. When the silver halide is irradiated by ultraviolet rays or short-wave visible light, the silver halide will decompose into silver and halogen atoms, which reflect or scatter light, thereby darkening the lens. When the light becomes weak, the silver and halogen atoms will recombine into silver halide, thereby restoring the lens to a transparent state. With a triangular photosensitive area, the color change is more novel, and with the polarizing film 20, it is more comfortable to wear in all-weather use.

[0026] The hardening layer 50 is formed by dipping hardening liquid and can be set as an organic silicon film layer. The anti-reflection layer 60 realizes the anti-reflection effect of the lens and improves the anti-transmittance. The photochromic film layer 40 is a coating containing a photochromic material, and its thickness gradually decreases from 5±0.5 μm to 0 μm from the central circular area 71 to the edge circular area 74, so that the color change effect gradually weakens from the center to the outer circle, with a gradual color change effect, and the switching between indoor and outdoor environments is softer in all weather conditions.

[0027] The anti-reflection layer 60 is a silicon dioxide and aluminum oxide dielectric film with a total thickness of 500±45nm. It is provided with 7-11 layers and is formed by alternating silicon dioxide and aluminum oxide to improve the anti-reflection property of the lens.

[0028] The present invention also discloses a processing technology for producing polarized photochromic lenses that can be worn all day long, comprising: S1, providing a polarizing film 20, the surface of which has a central circular area 71, a second circular area 72, a third circular area 73, and an edge circular area 74 in sequence, and using a laser to mark regular triangle units 75, placing the polarizing film 20 in the center of the rubber ring and fixing it, and then using a glue gun to fill the front and back sides of the polarizing film with resin, and curing to form a substrate body; S2. Treat the cured substrate body with sodium hydroxide solvent, and then ultrasonically clean the treated lens. S3. After cleaning, dry it to remove the remaining moisture. S4. Treat the clean lens with plasma to increase its surface activity. S5. Place the treated lens on a specific spraying tooling. S6. Place the tooling in a spraying machine. After installing the progressive film layer baffle, spray the photochromic film layer. Its thickness gradually decreases from 5 μm to 0 μm from the central circular area to the edge circular area. S7. Place the sprayed lens in an oven to cure the photochromic film layer. S8. After cleaning the cured lens, place it in a hardening machine and prepare a hardening layer with a thickness of 2.5 μm by soaking and lifting. S9. Place the prepared hardening layer in an oven for high-temperature curing. S10. After curing, place the lens in an oven at 70 °C for heat preservation for 20 min. S11. Place the heat-preserved lens in a coating machine to prepare for coating the antireflection layer. After the coating is completed, the inspection of the coated lens can be carried out.

[0029] The progressive film layer baffle is set as a template with gradient holes. The aperture of the template gradually decreases from the center to the outside. The thickness control of the color-changing film layer is completed by controlling the spraying rate and spraying amount.

[0030] In summary, through the cooperation of the inner polarizing film and the outer photochromic film layer, the present invention uses a spraying process and combines a progressive film layer baffle to prepare a lens with a non-uniform color-changing film layer, which can better adapt to the all-weather change from outdoors to indoors, has a larger field of view, and the light-enhancing particle area with an equilateral triangle combination and the polarizing film can enhance the light-transmitting and color-changing effect, improve the conversion rate, have efficient switching, comfortable wearing, and reduce strong light interference.

[0031] The above description shows and describes several preferred embodiments of the present invention. However, as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications, and environments, and can be modified within the scope of the inventive concept described herein through the above teachings or the technology or knowledge in related fields. And any modifications and changes made by those skilled in the art without departing from the spirit and scope of the present invention shall fall within the protection scope of the appended claims of the present invention.

Claims

1. A polarized photochromic lens that can be worn all day long, characterized in that: include: A substrate body, the substrate body comprising a front substrate, a rear substrate, and a polarizing film cured between the front substrate and the rear substrate; The surface of the polarizing film has a central circular area, a second circular area, a third circular area, and an edge circular area in sequence, wherein the second circular area and the third circular area are provided with a plurality of concave or convex equilateral triangle units; A photochromic film layer sprayed on the surface of the front substrate, wherein the thickness of the photochromic film layer decreases from the central circular area to the edge circular area, and the surface has a brightness enhancement particle area corresponding to the regular triangle unit; A hardening layer dip-coated on the surface of the photochromic film layer and the surface of the rear substrate; and An anti-reflection layer is plated on the surface of the hardened layer.

2. The all-weather wearable polarized photochromic lens according to claim 1, characterized in that: The side length of the regular triangle unit is 1.2 mm.

3. The all-weather wearable polarized photochromic lens according to claim 1, characterized in that: The photochromic film layer is a coating layer containing a photochromic material, and its thickness gradually decreases from 5±0.5 μm to 0 μm from the central circular area to the edge circular area.

4. The all-weather wearable polarized photochromic lens according to claim 1, characterized in that: The brightness enhancement particle area is configured as a silver halide film layer evaporated by an electron gun, and the thickness of the brightness enhancement particle area is 20-80 nm.

5. The all-weather wearable polarized photochromic lens according to claim 1, characterized in that: The anti-reflection layer is a silicon dioxide and aluminum oxide dielectric film with a total thickness of 500±45nm, 7-11 layers are arranged, and silicon dioxide and aluminum oxide are alternately formed.

6. A process for producing polarized photochromic lenses that can be worn all day long as claimed in claim 1, characterized in that: include: S1. Provide a polarizing film, wherein the surface of the polarizing film has a central circular area, a second circular area, a third circular area, and an edge circular area arranged in sequence, and use a laser to mark regular triangle units, put the polarizing film into the center of the rubber ring and fix it, and then use a glue gun to fill the front and back sides of the polarizing film with resin, and solidify and form a substrate body; S2, treating the solidified substrate body with a sodium hydroxide solvent, and then ultrasonically cleaning the treated lens; S3, after cleaning, drying is performed to remove the remaining water; S4, clean lenses are treated with plasma to increase surface activity; S5. Place the processed lens into a specific spraying tool; S6. Put the tooling into the spraying machine, install the progressive film baffle, and then spray the photochromic film layer, the thickness of which gradually decreases from 5 μm to 0 μm from the central circle area to the edge circle area; S7, placing the sprayed lens into an oven to cure the photochromic film layer; S8, after cleaning the cured lens, put it into a hardening machine, and prepare a hardening layer by soaking and pulling, with a thickness of 2.5um; S9, placing the prepared hardened layer into an oven for high temperature curing; S10, after curing, put the lens into a 70°C oven for 20 minutes; S11, placing the heat-insulated lens into a coating machine to prepare for coating an anti-reflection layer; After coating, the lens can be inspected after coating.

7. The process for producing polarized photochromic lenses that can be worn all day long according to claim 6, characterized in that: The progressive film layer baffle is configured as a template with gradual holes, and the aperture of the template gradually decreases from the center to the outside.

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