Anti-blue light photochromic lens

Abstract

The utility model discloses an anti-blue-light photochromic lens which comprises a photochromic substrate, a barrier layer, a photochromic coating, a hardening layer, a transmittance layer, an antireflection layer and a protective layer. The color-changing substrate can change color under the irradiation of ultraviolet light with the wavelength of 100-400 nm. The blocking layer is arranged on one side of the color-changing substrate and used for blocking blue light and ultraviolet light. The color-changing coating is arranged on one side, opposite to the color-changing substrate, of the blue-light-proof layer, and the color-changing coating can change color under irradiation of ultraviolet light with the wavelength of 100-300 nm. The hardening layer is arranged on the side, back on to the blue light preventing layer, of the color changing film layer. The transmittance layer is arranged on the side, back on to the color changing coating, of the hardening layer. And the antireflection layer is arranged on one side, opposite to the hardening layer, of the transmittance layer. The protective layer is arranged on the side, back to the transmittance layer, of the antireflection layer. According to the embodiment of the utility model, the anti-blue-light photochromic lens can provide different photochromic effects in different scenes while playing an anti-blue-light effect, so that the photochromic types of the photochromic lens are enriched, and the selectivity of a user is increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of blue light protection lenses, and in particular relates to a blue light protection discoloration lens. Background Art

[0002] Eyes are very important organs in the human body, and in daily life, eyes are always at risk of being harmed by blue light. Therefore, currently, blue light is mainly blocked by wearing glasses that can block blue light. In order to meet the user's demand for discoloration of glasses at the same time, anti-blue light photochromic lenses have been developed, which have both blue light blocking and discoloration functions. However, the discoloration degree of this type of lens is single, and the discoloration degree cannot be adjusted according to the use environment, especially in vehicles such as cars. Since the glass of the vehicle can block part of the ultraviolet light, the discoloration effect of the anti-blue light photochromic lenses becomes poor, which cannot meet the user's use needs. Utility Model Content

[0003] The purpose of the utility model is to provide a blue light protection photochromic lens, which can provide different photochromic effects in different scenes and ultraviolet light environments.

[0004] In order to achieve the above-mentioned purpose, a specific embodiment of the utility model provides an anti-blue light photochromic lens, including a photochromic substrate, a barrier layer, a photochromic coating, a hardened layer, a transmittance layer, an anti-reflection layer and a protective layer. The photochromic substrate can change color under the irradiation of ultraviolet light with a wavelength of 100 to 400 nm. The barrier layer is arranged on one side of the photochromic substrate to block blue light and ultraviolet rays. The photochromic coating is arranged on the side of the anti-blue light layer facing away from the photochromic substrate, and the photochromic coating can change color under the irradiation of ultraviolet light with a wavelength of 100 to 300 nm. The hardened layer is arranged on the side of the photochromic film layer facing away from the anti-blue light layer. The transmittance layer is arranged on the side of the hardened layer facing away from the photochromic coating. The anti-reflection layer is arranged on the side of the transmittance layer facing away from the hardened layer. The protective layer is arranged on the side of the anti-reflection layer facing away from the transmittance layer.

[0005] In one or more embodiments of the present invention, the color-changing substrate is made of a color-changing monomer.

[0006] In one or more embodiments of the present invention, the barrier layer is formed by curing the blue light absorber.

[0007] In one or more embodiments of the present invention, the blue light absorber is BL1226 blue light absorber, BL1227 blue light absorber or BL1393 blue light absorber.

[0008] In one or more embodiments of the present invention, the color-changing coating contains a photochromic compound.

[0009] In one or more embodiments of the present invention, the thickness of the color-changing coating is 5 to 15 μm.

[0010] In one or more embodiments of the present invention, the hardening layer is formed by curing a silane coupling agent after being irradiated with ultraviolet rays.

[0011] In one or more embodiments of the present invention, the anti-reflection layer is made of nano-scale hollow silica.

[0012] In one or more embodiments of the present invention, the anti-reflection layer is a multi-layer structure.

[0013] In one or more embodiments of the present invention, the protective layer is a waterproof membrane.

[0014] Compared with the prior art, the anti-blue light photochromic lenses of the present invention can provide different photochromic effects in different scenes and ultraviolet light environments while achieving the anti-blue light effect, enriching the photochromic types of photochromic lenses, increasing user selectivity, and meeting the different needs of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings described below are only some implementations recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 This is a structural diagram of a blue light protection photochromic lens in one embodiment of the present invention.

[0017] Explanation of main figure marks: 1. color-changing substrate, 2. barrier layer, 3. color-changing coating, 4. hardening layer, 5. transmittance layer, 6. anti-reflection layer, 7. protective layer. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the implementation of the present invention will be clearly and completely described below in conjunction with the drawings in the implementation of the present invention. Obviously, the described implementation is only a part of the implementation of the present invention, not all of the implementations. Based on the implementation of the present invention, all other implementations obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0019] like Figure 1As shown, the anti-blue light photochromic lens in one embodiment of the utility model includes a photochromic substrate 1, a barrier layer 2, a photochromic coating 3, a hardening layer 4, a transmittance layer 5, an anti-reflection layer 6 and a protective layer 7. The photochromic substrate 1 can change color under the irradiation of ultraviolet light with a wavelength of 100 to 400 nm. The barrier layer 2 is arranged on one side of the photochromic substrate 1 to block blue light and ultraviolet rays. The photochromic coating 3 is arranged on the side of the anti-blue light layer 2 facing away from the photochromic substrate 1, and the photochromic coating 3 can change color under the irradiation of ultraviolet light with a wavelength of 100 to 300 nm. The hardening layer 4 is arranged on the side of the photochromic film layer facing away from the anti-blue light layer 2. The transmittance layer 5 is arranged on the side of the hardening layer 4 facing away from the photochromic coating 3. The anti-reflection layer 6 is arranged on the side of the transmittance layer 5 facing away from the hardening layer 4. The protective layer 7 is arranged on the side of the anti-reflection layer 6 facing away from the transmittance layer 5.

[0020] The color-changing substrate 1 and the color-changing coating 3 can exhibit differentiated color-changing capabilities under ultraviolet light of different wavelengths. Those skilled in the art will understand that the differentiated color-changing capabilities of the color-changing substrate 1 and the color-changing coating 3 can be achieved by adjusting the content of the color-changing material in the color-changing substrate 1 and the color-changing coating 3.

[0021] When outdoors and the light is relatively mild, such as on sunny days in autumn and winter, the photochromic coating 3 can absorb part of the ultraviolet light with a wavelength of 100 to 300 nm and change color, and the remaining ultraviolet light can be fully absorbed by the barrier layer 2. The ultraviolet light basically cannot irradiate the photochromic substrate 1, and the photochromic substrate 1 basically does not change color. In this case, the light is relatively mild, and the anti-blue light photochromic lenses do not need to provide a darker color change effect. Only the color change of the photochromic coating 3 can meet the needs.

[0022] When outdoors and the light is relatively strong, such as on sunny days in spring and summer, the color-changing coating 3 can absorb part of the ultraviolet light with a wavelength of 100 to 300 nm and change color, while the remaining ultraviolet light cannot be fully absorbed by the barrier layer 2 and is irradiated onto the color-changing substrate 1, causing the color-changing substrate 1 to change color. In this case, the light is relatively strong, and the color-changing substrate 1 and the color-changing coating 3 change color at the same time and the colors are superimposed, which can provide a darker color change effect.

[0023] When you are inside a car and the light is relatively strong, the car windshield can block most of the ultraviolet light with a wavelength below 300nm, while most of the ultraviolet light with a wavelength between 300nm and 400nm can penetrate the windshield. At this time, the ultraviolet light that penetrates the windshield penetrates the photochromic coating 3 again and partially shines on the photochromic substrate 1. In this case, although the light is strong, the car windshield has provided a certain blocking effect. The anti-blue light photochromic lenses do not need to provide a darker color change effect, and only the color change of the photochromic substrate 1 can meet the needs.

[0024] It can be seen that the anti-blue light photochromic lens in one embodiment of the utility model can provide different photochromic effects in different scenes and ultraviolet light environments while achieving the anti-blue light effect, enriching the photochromic types of photochromic lenses, increasing the user's selectivity, and meeting the different needs of users.

[0025] In one embodiment, the color-changing substrate 1 is made of a color-changing monomer. The color-changing monomer is a resin material, which contains a color-changing material, and the color-changing material includes but is not limited to a photochromic compound. The content of the photochromic compound can be 1800-2200ppm, specifically 2000ppm. The photochromic compound can be a dual photochromic molecule disclosed in the patent document with publication number CN102171274A, or other photochromic compounds can be selected.

[0026] The barrier layer 2 is formed by curing the blue light absorber, which can not only absorb most of the blue light, but also absorb a small amount of ultraviolet light. In the case of insufficient light, it reduces the ultraviolet light irradiated on the color-changing substrate 1, so that the color-changing substrate 1 basically does not change color or changes color to a shallow degree.

[0027] The blue light absorber may specifically be BL1226 blue light absorber, BL1227 blue light absorber or BL1393 blue light absorber, or other types of blue light absorbers may also be selected.

[0028] In one embodiment, the color-changing coating 3 contains a photochromic compound and is formed after curing. The content of the photochromic compound in the color-changing coating 3 can be 400-600 ppm, specifically 500 ppm. The photochromic compound in the color-changing coating 3 can be selected from benzopyran photochromic derivatives disclosed in the patent document with publication number CN104016996B, or other photochromic compounds can be selected.

[0029] Furthermore, the thickness of the color-changing coating 3 can be set to 5 to 15 μm, specifically 5 μm, 8 μm, 10 μm, 12 μm or 15 μm.

[0030] The hardened layer 4 is formed by curing a silane coupling agent after being irradiated with ultraviolet rays. The hardened layer 4 has the characteristics of high hardness and high adhesion. The hardened layer 4 can effectively improve the wear resistance of the lens, reduce the risk of scratches and wear of the lens, and increase the service life of the lens.

[0031] The anti-reflection layer 6 is made of nano-scale hollow silica, which can reduce or eliminate the reflection loss of light on the surface of the lens, thereby increasing the light transmittance and improving the imaging intensity and resolution.

[0032] Considering that the anti-reflection effect of a single-layer anti-reflection layer 6 is limited, in order to improve the anti-reflection effect of the anti-reflection layer 6, the anti-reflection layer 6 can adopt double layers, triple layers or even more layers to improve the anti-reflection effect, making the lens more transparent and clear.

[0033] In one embodiment, the protective layer 7 may be a waterproof film to prevent moisture from penetrating between the layers of the anti-blue light photochromic lens.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A blue light protection photochromic lens, characterized in that: include: A color-changing substrate (1) which can change color under the irradiation of ultraviolet light with a wavelength of 100 to 400 nm; A barrier layer (2), provided on one side of the color-changing substrate (1), for blocking blue light and ultraviolet rays; A color-changing coating (3) is arranged on the side of the blue light protection layer (2) facing away from the color-changing substrate (1), and the color-changing coating (3) can change color under the irradiation of ultraviolet light with a wavelength of 100 to 300 nm; A hardening layer (4) is arranged on a side of the color-changing film layer facing away from the blue light protection layer (2); A transmittance layer (5) is arranged on a side of the hardened layer (4) facing away from the color-changing coating (3); an anti-reflection layer (6) disposed on a side of the transmittance layer (5) facing away from the hardening layer (4); and A protective layer (7) is arranged on a side of the anti-reflection layer (6) facing away from the transmittance layer (5).

2. The blue light protection photochromic lens according to claim 1, characterized in that: The color-changing substrate (1) is made of a color-changing monomer.

3. The blue light protection photochromic lens according to claim 1, characterized in that: The barrier layer (2) is formed by curing the blue light absorber.

4. The blue light protection photochromic lens according to claim 3, characterized in that: The blue light absorber is BL1226 blue light absorber, BL1227 blue light absorber or BL1393 blue light absorber.

5. The blue light blocking photochromic lens according to claim 1, characterized in that: The color-changing coating (3) contains a photochromic compound.

6. The blue light blocking photochromic lens according to claim 1, characterized in that: The thickness of the color-changing coating (3) is 5 to 15 μm.

7. The blue light blocking photochromic lens according to claim 1, characterized in that: The hardened layer (4) is formed by curing a silane coupling agent after being irradiated with ultraviolet rays.

8. The blue light blocking photochromic lens according to claim 1, characterized in that: The anti-reflection layer (6) is made of nano-scale hollow silicon dioxide.

9. The blue light blocking photochromic lens according to claim 1, characterized in that: The anti-reflection layer (6) is a multi-layer structure.

10. The blue light blocking photochromic lens according to claim 1, characterized in that: The protective layer (7) is a waterproof membrane.

Images