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Light-sensitive photochromic lens

A photochromic and lens technology, applied in the field of lenses, can solve the problem of longer recovery time and achieve the effects of reduced dosage, good stability and fatigue resistance, and ideal light sensitivity

Active Publication Date: 2013-02-27
JIANGSU MAAT OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The time it takes for the photochromic material to change color when exposed to UV light to return to its original color depends on many factors, but if the photochromic material is exposed a second time to exciting UV light during photorecovery, the recovery time becomes longer

Method used

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  • Light-sensitive photochromic lens

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Embodiment Construction

[0017] The technical solutions of the present invention will be further described below in conjunction with specific implementation methods and accompanying drawings.

[0018] Such as figure 1 As shown, wherein, the lens is provided with an ultraviolet absorbing layer 31 , a photochromic layer 32 , a light absorbing indicating layer 33 and a transparent anti-reflection layer 34 in sequence on a transparent substrate (not shown in the figure). The thickness of the ultraviolet absorbing layer is 10-20 microns, and is composed of 50-75wt% stearyl methacrylate, 0.5-1.5wt% benzofuran-2-one, 12.5-18wt% acrylic acid - 2-(4-Benzoyl-3-hydroxy-phenoxy)ethyl ester and the balance absolute ethanol were formed by spraying. The photochromic layer has a thickness of 15-50 microns, and is composed of 50-75wt% polyacrylate, 0.3-0.6wt% 1,3-diphenyl-4-m-bromobenzoyl-5-pyridine Azolinone, 0.3-0.6wt% naphthopyran, 0.5-1.5wt% benzofuran-2-one, 0.25-0.50wt% 2-hydroxy-4-methoxy-4'-chloro Benzophen...

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Abstract

The invention relates to a light-sensitive photochromic lens. The lens comprises a transparent substrate, an ultraviolet absorption layer, a light-sensitive photochromic layer, a light absorption indication layer and a transparent antireflection layer. According to the light-sensitive photochromic lens provided by the invention, due to the film layer structure, the material design and the structural design of the lens, the lens is good in light-sensitive photochromic effect, the film layer has excellent stability, oxidation resistance and fatigue resistance and high response sensitivity on ultraviolet light, and when the ultraviolet excitation conditions disappear, the lens is quick in recovery speed and long in service life.

Description

technical field [0001] The invention relates to a lens, more specifically, a photochromic lens. Background technique [0002] In recent years, the proportion of myopia has increased and the age group has declined, and the number of middle-aged and elderly people wearing reading glasses has gradually increased, so more and more people need to wear glasses to correct their vision, and strong sunlight outdoors is likely to cause eye damage Therefore, when doing outdoor activities, you need to wear photochromic glasses to prevent direct sunlight from shining on your eyes. Therefore, a pair of prescription photochromic glasses has become an urgent need to improve the quality of life. [0003] The lenses of the color-changing sunglasses that arise at the historic moment usually adopt photochromic or thermochromic. Such photochromic and thermochromic materials are materials that change pigments, that is, their absorbance and visible light transmission change when exposed to speci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02C7/10B32B27/06
Inventor 吴金军
Owner JIANGSU MAAT OPTICAL CO LTD
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