OPTICAL ARTICLE INCLUDING AN ANTIREFLECTION COATING HAVING IMPROVED CRACK-RESISTANCE PROPERTIES UNDER MECHANICAL STRESS
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Dec 19, 2013
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Jul 1, 2011
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Abstract
The invention relates to an optical article including a transparent organic glass substrate, a primary coating including polyurethane and particulate silica, an abrasion-resistant coating, and an antireflection coating, said coatings, and in particular the antireflection coating, having improved crack resistance when the optical article is subjected to high amounts of mechanical stress, e.g., during edge-grinding and the mounting of lenses in eyeglass frames. The invention also relates to a method for manufacturing such an article.
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