Anti-blue light photochromic lens and processing technology thereof

Abstract

The invention discloses an anti-blue-light photochromic lens, which comprises a substrate, and is characterized in that the substrate is formed by mixing a resin monomer with photosensitive toner and curing, and the ratio of the resin monomer to the photosensitive toner is 10: 1.5; the hardening layer is dip-coated on the surface of the substrate; the anti-blue light layer is plated on the surface of the hardening layer; the color changing layer is arranged on the surface of the anti-blue-light layer and comprises a first silver halide layer, a second tawny layer and a third silver halide layer. The photosensitive toner permeates into the substrate, the color changing efficiency can be improved by matching with the color changing layer on the outer surface, indoor and outdoor conversion and switching are faster, and wearing and using are more comfortable. The anti-blue-light layer is arranged on the inner side of the color-changing layer, so that the anti-blue-light property of the lens can After the substrate is subjected to plasma treatment, ion bombardment is carried out on the silver halide layers of the hollow-out structure, the color changing effect is achieved, meanwhile, the silver halide layers are arranged on the front side and the rear side, transition is achieved through the tawny layer in the middle, sunlight irradiation resistance can be enhanced, and outdoor use is more comfortable.

Description

Technical Field

[0001] The present invention belongs to the technical field of photochromic lenses, and in particular, relates to a blue light protection photochromic lens and a processing technology thereof. Background Art

[0002] White light LED as a display manufacturing technology for the backlight system of display devices has become the mainstream product technology of existing electronic display technology. This type of display screen is widely used in mobile communication terminal equipment, computer equipment, home and commercial display equipment and entertainment equipment. The blue light hazards and "blue-enriched" photobiological safety issues caused by white light LED are major technical defects of this type of display screen. The light radiation hazards of white light LED are mainly manifested as short-wavelength high-energy blue light with a peak of about 435nm, which can cause retinal photochemical damage and apoptosis of epidermal cells on the pigment. Short-wave blue light has high energy and strong tissue penetration ability, and has a certain destructive effect on the biological photosensitive groups of mammals, which can cause retinal lesions. Pathological studies have confirmed that the high-energy blue light in white light LED plays a certain accelerating role in the formation mechanism of age-related macular degeneration. Because the retinal macula of children has a weak absorption capacity for blue light, the amount of blue light radiation transmitted under the same light intensity is about twice that of adults, and blue light radiation is more harmful to the retina of children. If young people in the growth and development period are exposed to high-energy blue light lighting environment for a long time, it may induce blinding eye diseases at the mildest and cause lifelong vision impairment at the worst.

[0003] Ultraviolet radiation accounts for about 7% of the total solar radiation energy. Excessive ultraviolet radiation during outdoor activities can cause photochemical reactions in biological tissues, especially damaging human skin, eyes, and immune system. The human eye is the most sensitive part to ultraviolet rays. Long-term and repeated exposure to ultraviolet rays can cause acute conjunctivitis and retinal diseases. Ultraviolet radiation is also an important cause of senile cataracts.

[0004] Therefore, functional protective lenses that protect vision and safeguard eye health have become high-profit products in the lens market. The development technology of photochromic lenses for outdoor activities in strong light environments has become mature and stable, and various types of light-colored or non-base-colored photochromic sunglasses have been sold for many years and have been recognized by the market; high-energy blue light protection glasses for indoor dim light environments have also become a hot industry in the lens market; on this basis, combined with the high-energy blue light protection needs of people who come into contact with electronic display equipment, innovative eyewear products with both outdoor photochromic and indoor high-energy blue light protection functions have emerged in recent years.

[0005] The human eye is not sensitive to blue light in the 400-440nm range for vision and color discrimination, and the light in this band has a short wavelength and high energy, which is harmful to the eyes. High-energy blue light protection lenses should maintain a low transmittance for this part of blue light; the 440-500nm range is medium and long-wave blue light, which is relatively less harmful to the human eye, and can effectively regulate the body's biological rhythm and optic nerve feedback, so that the human eye can accurately judge the color of the observed object, and a certain transmittance should be maintained for this part of blue light.

[0006] Photochromic lenses, also known as "photosensitive lenses", are based on a reversible molecular reaction mechanism of light-color interconversion. When the lens switches between indoor and outdoor light, it can quickly darken under the ultraviolet light in the outdoor light, block strong light and absorb ultraviolet light, but not absorb visible light. When it returns to the indoor low-ultraviolet or no-ultraviolet environment, the lens can quickly fade and return to a colorless and transparent state to ensure the light transmittance of the lens. Therefore, photochromic lenses can be used both indoors and outdoors, and can effectively prevent damage to the eyes from sunlight, ultraviolet light, and glare.

[0007] The main technical difficulty in combining photochromic lenses with blue light protection functions is that the various types of organic blue light absorption protection materials that are currently used most have certain spectral absorption in the ultraviolet light region, especially in the specific ultraviolet spectrum region that can cause photochromic materials to change color. Blending them with photochromic materials to produce blue light protection photochromic lenses will increase the amount of photochromic materials added by multiples, greatly increasing the manufacturing cost; and it will affect the color change and fading speed when used as a photochromic lens, resulting in low color change intensity, incomplete fading and the presence of background color, which brings consumers a poor user experience.

[0008] Therefore, under the premise of ensuring effective absorption of high-energy blue light, it is of obvious commercial value to find and develop organic blue light absorbing materials that have no absorption in the ultraviolet light region, have low industrial production and processing costs, and have high weather resistance for use in anti-blue light photochromic lenses and anti-blue light film products. Summary of the invention

[0009] In view of this, the technical problem to be solved by the present invention is to provide a blue light blocking photochromic lens and a processing technology thereof, so as to avoid the trouble of poor blue light blocking and color changing effects of the previous lenses.

[0010] In order to solve the above technical problems, the present invention discloses a blue light blocking photochromic lens, which comprises: The substrate is formed by curing a resin monomer mixed with a photosensitive toner, and the ratio of the resin monomer to the photosensitive toner is 10:1.5; A hardening layer dip-coated on the substrate surface; An anti-blue light layer plated on the surface of the hardened layer; and The color-changing layer is arranged on the surface of the blue light protection layer, and the color-changing layer includes a first silver halide layer, a second brown layer, and a third silver halide layer.

[0011] According to one embodiment of the present invention, the hardening layer is configured as an organic silicon film layer.

[0012] According to one embodiment of the present invention, the anti-blue light layer includes a zirconium dioxide layer, an aluminum oxide layer, a zirconium dioxide layer, an aluminum oxide layer, and a zirconium dioxide layer, and the thickness of the anti-blue light layer is 80-220 μm.

[0013] The present invention also discloses a processing technology for blue light protection photochromic lenses, comprising: Step a. Providing a resin monomer and a photosensitive toner in a ratio of 10:1.5, mixing them in a vacuum, and then filling them into a glass mold through a glue gun, and curing and forming a substrate; Step b. The cured substrate is treated with a sodium hydroxide solvent and then ultrasonically cleaned; Step c. The cleaned substrate is dried and sent to a hardening tank for hardening to form a hardened layer; Step d. After hardening, ultrasonic cleaning and drying are performed again; Step e. The dried substrate is subjected to plasma treatment to increase surface activity, and then sent to a coating machine to be coated with a blue light protection layer; Step f. The coated substrate is subjected to plasma treatment again to increase the surface activity, and then sent to an ion sputtering apparatus, a hollow mold is provided on the upper side of the substrate, and a hollow first silver halide layer is formed on the surface of the substrate by ion bombardment; Step g. Remove the substrate, put it into a spin coater to spin-coat the brown dye, and cure it with ultraviolet light to form a second brown layer; Step h. The spin-coated substrate is subjected to plasma treatment again to increase surface activity, and then fed into an ion sputtering apparatus, a hollow mold is provided on the upper side of the substrate, and a third silver halide layer having hollow holes is formed on the surface of the substrate by ion bombardment; Step i. Take out the vacuum plasma cleaning and inspect the packaging.

[0014] According to one embodiment of the present invention, the diameter of the hollow holes of the hollow mold is nanometer scale.

[0015] According to one embodiment of the present invention, the thickness of the first silver halide layer is 111-122 nm; the thickness of the third silver halide layer is 90-101 nm.

[0016] According to one embodiment of the present invention, the thickness of the second brown layer is 3 μm.

[0017] Compared with the prior art, the present invention can achieve the following technical effects: The base film is infiltrated with photosensitive color powder, which, together with the color-changing layer on the outer surface, can improve the color-changing efficiency, making the transition between indoor and outdoor use faster and more comfortable to wear.

[0018] The anti-blue light layer is arranged on the inner side of the color-changing layer, which can improve the anti-blue light property of the lens.

[0019] After the substrate is treated with plasma, the color-changing effect is achieved by ion bombardment of the hollow structure silver halide layer. At the same time, the silver halide layer is set on the front and back sides, and a brown layer is used in the middle for transition, which can enhance the resistance to sunlight and make outdoor use more comfortable.

[0020] Of course, any product implementing the present invention does not necessarily need to achieve all of the above-mentioned technical effects at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 Schematic diagram of a blue light blocking photochromic lens according to an embodiment of the present invention. Figure ID

[0022] Substrate 10, hardening layer 20, blue light protection layer 30, color changing layer 40, first silver halide layer 41, second brown layer 42, third silver halide layer 43. DETAILED DESCRIPTION

[0023] The following will describe the implementation methods of the present invention in detail with reference to the accompanying drawings and embodiments, so that the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0024] Please refer to Figure 1 , Figure 1 Schematic diagram of a blue light blocking photochromic lens according to an embodiment of the present invention.

[0025] As shown in the figure, a blue light protection photochromic lens includes: a substrate 10, which is formed by curing a resin monomer mixed with a photosensitive color powder, and the ratio of the resin monomer to the photosensitive color powder is 10:1.5; a hardening layer 20 dip-coated on the surface of the substrate 10; an anti-blue light layer 30 plated on the surface of the hardening layer 20; and a color-changing layer 40 arranged on the surface of the anti-blue light layer 30, and the color-changing layer 40 includes a first silver halide layer 41, a second brown layer 42, and a third silver halide layer 43.

[0026] In one embodiment of the present invention, the outer side of the substrate 10 is dip-coated with a hardening layer 20 to improve the hardness. The anti-blue light layer 30 enhances the anti-blue light property of the lens, making it more comfortable to wear. The outermost color-changing layer 40 realizes the photochromic function. It includes a first silver halide layer 41, a second brown layer 42, and a third silver halide layer 43. Under the irradiation of ultraviolet rays, the silver halide will decompose into silver atoms and halogens, making the lens darker. When the ultraviolet rays disappear, these silver atoms and halogens will resynthesize silver halide, and the lens will become colorless again. The second brown layer 42 in the middle can relatively increase the speed of photochromic conversion. In the process of going from indoors to outdoors, the color change is faster. At the same time, the second brown layer 42 is selected from brown, which is lighter in color and has better light transmittance, and can reduce strong stray light interference. The substrate 10 is formed by curing a resin monomer mixed with photosensitive color powder, which can improve the overall photosensitive properties of the substrate 10, and can be further changed quickly with the color-changing layer 40.

[0027] In a preferred embodiment, the hardening layer 20 is configured as an organic silicon film layer, which is widely used.

[0028] Furthermore, the anti-blue light layer 30 includes a zirconium dioxide layer, an aluminum oxide layer, a zirconium dioxide layer, an aluminum oxide layer, and a zirconium dioxide layer, and the thickness of the anti-blue light layer 30 is 80-220 μm, and is selected from a metal oxide layer, which can improve the anti-reflection effect of the lens and enhance the anti-blue light property.

[0029] The present invention also discloses a processing technology for blue light protection photochromic lenses, comprising: Step a. providing a resin monomer and a photosensitive color powder in a ratio of 10:1.5, mixing them in a vacuum, and then filling them into a glass mold through a glue gun, and curing to form a substrate; the photosensitive color powder can enhance the photosensitivity of the resin substrate, making it respond faster and have higher switching efficiency in subsequent photochromism, and the content is controlled moderately to avoid affecting light transmittance; Step b. treating the cured substrate with a sodium hydroxide solvent and then ultrasonically cleaning it to remove surface stains; Step c. The cleaned substrate is dried and sent to a hardening tank for hardening to form a hardening layer to increase the hardness of the lens; Step d. After hardening, ultrasonic cleaning and drying are performed again; Step e. The dried substrate is subjected to plasma treatment to increase the surface activity, and then sent to a coating machine to be coated with an anti-blue light layer; the anti-blue light layer is selected from zirconium dioxide and aluminum oxide, and is vacuum-coated to improve the surface transmittance of the lens and enhance the anti-blue light effect; Step f. The coated substrate is subjected to plasma treatment again to increase the surface activity, and then sent to an ion sputtering apparatus. A hollow mold is provided on the upper side of the substrate, and a hollow first silver halide layer is formed on the surface of the substrate by ion bombardment. The hollow holes can be dispersed during the decomposition of the silver halide to avoid accumulation, which makes the color of the lens too dark; at the same time, the orderly hollow holes have a more uniform color change effect; Step g. Take out the substrate, put it into a spin coater to spin coat the brown dye, and form a second brown layer through UV curing. The brown layer is a brown pigment, which is set as an intermediate interlayer through spin coating and curing. It can play a transitional role in the light change process of the front and rear substrates, reduce eye switching fatigue when wearing, and be more comfortable. Preferably, the thickness of the second brown layer is 3μm.

[0030] Step h. The spin-coated substrate is subjected to plasma treatment again to increase surface activity, and then sent to an ion sputtering device. A hollow mold is provided on the upper side of the substrate, and a third silver halide layer with hollow holes is formed on the surface of the substrate by ion bombardment. The outermost silver halide layer is further matched to enhance the light-variable effect; the thickness of the first silver halide layer is 111-122nm; the thickness of the third silver halide layer is 90-101nm.

[0031] Step i. Take out the vacuum plasma cleaning and inspect the packaging.

[0032] Preferably, the diameter of the hollow holes of the hollow mold is nanometer-level, which is invisible to the naked eye, and the color change process is more uniform and comfortable to wear.

[0033] In summary, the substrate of the present invention is infiltrated with photosensitive color powder, which can improve the color change efficiency with the color change layer on the outer surface, and the indoor and outdoor switching is faster, and it is more comfortable to wear. The anti-blue light layer is arranged on the inner side of the color change layer, which can improve the blue light protection of the lens. After the substrate is treated with plasma, the silver halide layer of the hollow structure is bombarded by ions to achieve the color change effect. At the same time, the silver halide layer is arranged on the front and back sides, and the brown layer is used for transition in the middle, which can enhance the resistance to sunlight, and is more comfortable to use outdoors.

[0034] The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and 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 invention concept described herein through the above teachings or the technology or knowledge of the relevant field. Changes and variations made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A blue light blocking photochromic lens, characterized in that: include: A substrate, wherein the substrate is formed by curing a resin monomer mixed with a photosensitive toner, and the ratio of the resin monomer to the photosensitive toner is 10:1.5; A hardening layer dip-coated on the surface of the substrate; an anti-blue light layer plated on the surface of the hardened layer; and A color-changing layer is arranged on the surface of the blue light protection layer, and the color-changing layer includes a first silver halide layer, a second brown layer, and a third silver halide layer.

2. The blue light blocking photochromic lens according to claim 1, characterized in that: The hardening layer is configured as an organic silicon film layer.

3. The blue light blocking photochromic lens according to claim 1, characterized in that: The anti-blue light layer includes a zirconium dioxide layer, an aluminum oxide layer, a zirconium dioxide layer, an aluminum oxide layer, and a zirconium dioxide layer, and the thickness of the anti-blue light layer is 80-220 μm.

4. A process for processing a blue light blocking photochromic lens as claimed in claim 1, characterized in that: include: Step a. Providing a resin monomer and a photosensitive toner in a ratio of 10:1.5, mixing them in a vacuum, and then filling them into a glass mold through a glue gun, and curing and forming a substrate; Step b. The cured substrate is treated with a sodium hydroxide solvent and then ultrasonically cleaned; Step c. The cleaned substrate is dried and sent to a hardening tank for hardening to form a hardened layer; Step d. After hardening, ultrasonic cleaning and drying are performed again; Step e. The dried substrate is subjected to plasma treatment to increase surface activity, and then sent to a coating machine to be coated with a blue light protection layer; Step f. The coated substrate is subjected to plasma treatment again to increase the surface activity, and then sent to an ion sputtering apparatus, a hollow mold is provided on the upper side of the substrate, and a hollow first silver halide layer is formed on the surface of the substrate by ion bombardment; Step g. Remove the substrate, put it into a spin coater to spin-coat the brown dye, and cure it with ultraviolet light to form a second brown layer; Step h. The spin-coated substrate is subjected to plasma treatment again to increase surface activity, and then fed into an ion sputtering apparatus, a hollow mold is provided on the upper side of the substrate, and a third silver halide layer having hollow holes is formed on the surface of the substrate by ion bombardment; Step i. Take out the vacuum plasma cleaning and inspect the packaging.

5. The processing technology of the blue light blocking photochromic lens according to claim 4, characterized in that: The diameter of the hollow holes of the hollow mold is nanometer level.

6. The processing technology of the blue light blocking photochromic lens according to claim 4, characterized in that: The thickness of the first silver halide layer is 111-122 nm; the thickness of the third silver halide layer is 90-101 nm.

7. The processing technology of the blue light blocking photochromic lens according to claim 4, characterized in that: The thickness of the second brown layer is 3 μm.

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