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紫外領域及び可視領域の両方において低い反射性を持つ反射防止膜を有する光学部品
专利权人:
エシロール アテルナジオナール カンパニー ジェネラーレ デ オプティックESSILOR INTERNATIONAL COMPAGNIE GENERALE D’ OPTIQUE
发明人:
カド エルヴェ,ドゥ エガビーブ フランシスコ,ポフィラ オリビエ
申请号:
JP20130542567
公开号:
JP6117109(B2)
申请日:
2011.12.09
申请国别(地区):
日本
年份:
2017
代理人:
摘要:
This invention relates to an ophthalmic lens with a low reflection both in the ultraviolet region and in the visible region, comprising a substrate provided on its rear main face with a multilayered antireflective coating (3-7 layers) comprising a stack of at least one layer with a high refractive index and at least one layer with a low refractive index, having a mean reflection factor on the rear face in the visible region R m lower than or equal to 1.15%, a mean light reflection factor on the rear face in the visible region R v lower than or equal to 1%, a mean reflection factor R UV on the rear face between 280 nm and 380 nm, weighted by the function W(») defined in the ISO 13666:1998 standard, lower than 5%, for angles of incidence of 30° and 45°, the antireflective coating outer layer being a silica-based layer. The lens according to the invention does especially prevent the reflection of the UV radiation produced by light sources located behind the wearer.
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中国工程科技知识中心
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http://www.ckcest.cn/home/

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