发明名称 |
Optical article comprising an antireflective coating with a low reflection both in the ultraviolet region and in the visible region |
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(3-7layers) 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 280nm and 380 nm, weighted by the function W(l) 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. |
申请公布号 |
AU2011340436(A1) |
申请公布日期 |
2013.06.27 |
申请号 |
AU20110340436 |
申请日期 |
2011.12.09 |
申请人 |
ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE) |
发明人 |
CADO, HERVE;DE AYGUAVIVES, FRANCISCO;POPHILLAT, OLIVIER |
分类号 |
G02B1/11;G02B5/28;G02C7/02 |
主分类号 |
G02B1/11 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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