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Durable photochromic lens

A color-changing lens and durable technology, applied in the field of color-changing lenses, can solve the problems of complex color-changing structure of color-changing lenses, ultraviolet treatment of color-changing lenses, hidden safety hazards of color-changing lenses, etc., to achieve the effect of improving safety, improving clarity, and improving light transmittance

Inactive Publication Date: 2020-07-17
JIANGSU MAAT OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to the complex discoloration structure of the photochromic lens, the transmittance of the photochromic lens is lower than that of the ordinary lens. In addition, the photochromic lens cannot process ultraviolet rays, which has a greater safety hazard for the photochromic lens used outdoors. Therefore, the invention A durable photochromic lens to solve the above problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] It is a durable photochromic lens in a preferred embodiment of the present invention, including a substrate and a protective film, wherein the substrate includes: a light absorption indicating layer, a photochromic layer and an ultraviolet absorbing layer, and the thickness of the light absorbing indicating layer is 5 microns , the light absorption indicator layer is made of 50wt% polyvinyl alcohol, 0.15wt% triaryl, 0.5wt% benzofuran-2-one, 5wt% vinyl trichlorosilane and the balance of absolute ethanol Formed by spraying method; the thickness of the photochromic layer is 35 microns, and the photochromic layer is composed of 65wt% polyacrylate, 0.3wt% 13-diphenyl-4-m-bromobenzoyl-5-pyrrole Azolinone, 0.45wt% naphthopyran, 0.5wt% benzofuran-2-one, 0.35wt% 2-hydroxy-4-methoxy-4'-chlorobenzophenone and I A certain amount of dehydrated alcohol is formed by spraying method; Described ultraviolet absorption layer is made of 45wt% stearyl methacrylate, 0.8wt% benzofuran-2-keton...

Embodiment 2

[0016] It is a durable photochromic lens in a preferred embodiment of the present invention, including a substrate and a protective film, wherein the substrate includes: a light absorption indicating layer, a photochromic layer and an ultraviolet absorbing layer, and the thickness of the light absorbing indicating layer is 5- 8 microns, the light absorption indicator layer is composed of 65wt% polyvinyl alcohol, 0.25wt% triaryl, 0.65wt% benzofuran-2-one, 8wt% vinyltrichlorosilane and the balance of anhydrous Ethanol is formed by spraying; the thickness of the photochromic layer is 50 microns, and the photochromic layer is made of 75wt% polyacrylate, 0.45wt% 13-diphenyl-4-m-bromobenzoyl-5 - Pyrazolone, 0.6 wt% naphthopyran, 0.8 wt% benzofuran-2-one, 0.50 wt% 2-hydroxy-4-methoxy-4'-chlorobenzophenone And the absolute ethanol of surplus is formed by spraying method; Described ultraviolet absorbing layer is made of 60wt% stearyl methacrylate, 1.3wt% benzofuran-2-one, 15wt% acrylic...

Embodiment 3

[0019] It is a durable photochromic lens in a preferred embodiment of the present invention, including a substrate and a protective film, wherein the substrate includes: a light absorption indicating layer, a photochromic layer and an ultraviolet absorbing layer, and the thickness of the light absorbing indicating layer is 6 microns , the light absorption indicator layer is made of 55wt% polyvinyl alcohol, 0.20wt% triaryl, 0.55wt% benzofuran-2-one, 7wt% vinyl trichlorosilane and the balance of absolute ethanol Formed by spraying method; the thickness of the photochromic layer is 45 microns, and the photochromic layer is composed of 68wt% polyacrylate, 0.38wt% 13-diphenyl-4-m-bromobenzoyl-5-pyrrole Azolinone, 0.52wt% naphthopyran, 0.65wt% benzofuran-2-one, 0.45wt% 2-hydroxy-4-methoxy-4'-chlorobenzophenone and I A certain amount of dehydrated alcohol is formed by spraying method; Described ultraviolet absorption layer is made of 52wt% stearyl methacrylate, 1.1wt% benzofuran-2-ke...

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Abstract

The invention discloses a durable photochromic lens, which comprises a substrate and a protective film, wherein the substrate comprises a light absorption indicating layer, a photochromic layer and anultraviolet absorption layer, the thickness of the light absorption indicating layer is 5-8 microns, the light absorption indicating layer is prepared from 50 to 65 weight percent of polyvinyl alcohol,0.15 to 0.25 weight percent of a triaryl group, 0.5 to 0.65 weight percent of benzofuran-2-ketone, 5 to 8 weight percent of vinyltrichlorosilane and the balance of a solvent; the protective film isprepared from the following components in parts by weight: 30 to 50 parts of isothiocyanate compound and 30 to 40 parts of mercaptan compound, and a protection film is arranged on the protective film;the thickness of the protection film is 3 microns, and the protective liquid is a urethane acrylate oligomer. Through the ultraviolet absorption layer, the intensity of ultraviolet rays can be obviously reduced, damage of the ultraviolet rays to the eyes of a user is reduced, and the use safety is improved; the light transmittance of the lens can be obviously improved through the light absorptionindicating layer and the photochromic layer, so that the definition of the lens is improved to a certain extent.

Description

technical field [0001] The invention relates to the field of photochromic lenses, in particular to a durable photochromic lens. Background technique [0002] Photochromic lenses, also known as "photosensitive lenses." According to the principle of reversible reaction of light and color interchange, the lens can quickly darken under the irradiation of light and ultraviolet rays, block strong light and absorb ultraviolet rays, and have a neutral absorption of visible light; when returned to a dark place, it can quickly restore the colorless and transparent state, ensuring the lens of light transmittance. Therefore, photochromic lenses are suitable for indoor and outdoor use at the same time to prevent sunlight, ultraviolet light, and glare from harming the eyes. [0003] However, due to the complex discoloration structure of the photochromic lens, the transmittance of the photochromic lens is lower than that of the ordinary lens. In addition, the photochromic lens cannot pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02C7/10G02B1/14G02B5/22C08J5/18C08J7/06C08J7/04C08L29/04C08L33/04C08L33/10C08K5/5425C08K5/1535C08K5/1545C08K5/3445C08K5/132
CPCC08J5/18C08J7/04C08J7/065C08J2329/04C08J2333/04C08J2333/10C08J2475/14C08K5/132C08K5/1535C08K5/1545C08K5/3445C08K5/5425G02B5/22G02C7/10G02C7/102G02B1/14
Inventor 李军李强夏康俊
Owner JIANGSU MAAT OPTICAL CO LTD