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
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[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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