发明名称 |
Photochromic optical article comprising a saturated photochromic coating and a film absorbing UV radiation |
摘要 |
<p>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, 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 neighbouring 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 is at least equal to 5%. The invention also relates to two methods for manufacturing such an optical article.</p> |
申请公布号 |
AU2010333253(B2) |
申请公布日期 |
2015.02.19 |
申请号 |
AU20100333253 |
申请日期 |
2010.10.07 |
申请人 |
ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE) |
发明人 |
ARCHAMBEAU, SAMUEL;BOVET, CHRISTIAN;CANO, JEAN-PAUL;SAUGEY, ANTHONY |
分类号 |
G02C7/10;B29D11/00;C03C4/06;G02B1/10;G02B5/23;G03C1/73 |
主分类号 |
G02C7/10 |
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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