发明授权
US08684524B2 Photochromic optical article comprising a saturated photochromic coating and a film absorbing UV radiation
有权
包含饱和光致变色涂层和吸收UV辐射的膜的光致变色光学制品
- 专利标题: Photochromic optical article comprising a saturated photochromic coating and a film absorbing UV radiation
- 专利标题(中): 包含饱和光致变色涂层和吸收UV辐射的膜的光致变色光学制品
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申请号: US13514770申请日: 2010-10-07
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公开(公告)号: US08684524B2公开(公告)日: 2014-04-01
- 发明人: Samuel Archambeau , Christian Bovet , Jean-Paul Cano , Anthony Saugey
- 申请人: Samuel Archambeau , Christian Bovet , Jean-Paul Cano , Anthony Saugey
- 申请人地址: FR
- 专利权人: Essilor International (Compagnie Generale d'Optique)
- 当前专利权人: Essilor International (Compagnie Generale d'Optique)
- 当前专利权人地址: FR
- 代理机构: Vedder Price P.C.
- 代理商 Thomas J. Kowalski; Deborah L. Lu
- 优先权: FR0959102 20091217
- 国际申请: PCT/EP2010/064967 WO 20101007
- 国际公布: WO2011/072900 WO 20110623
- 主分类号: G02C7/02
- IPC分类号: G02C7/02 ; F21V9/06 ; G02B5/23
摘要:
The invention relates to a photochromic optical article with reduced thermal dependency, comprising: (a) a transparent substrate, (b) a saturated photochromic layer having, in the activated state and at a temperature of 20° C. or greater, a relative transmission factor of less than 1% in the visible range, and (c) an anti-UV coating of plastic material at least partially covering the saturated photochromic layer, the said anti-UV coating containing at least one agent which absorbs UV radiation (anti-UV agent) and is distributed in a pattern consisting of a multitude of points, each having a surface area of less than 0.15 mm 2, the average distance between two neighboring points lying between 0.5 and 2 mm and the ratio of the overall surface area of all the points to the total surface area of the anti-UV coating being such that the relative transmission factor of the optical article in the visible range in the activated state and at 20° C. or greater is at least equal to 5%. The invention also relates to two methods for manufacturing such an optical article.
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