METHOD FOR LIMITING THE PROPAGATION OF CRACKS IN AN OPTICAL ARTICLE

摘要

The present invention relates to the field of optical articles comprising a substrate at least coated with a hard coating. In particular, this invention relates to a method for limiting the propagation of cracks in an optical article such as a photochromic lens when it has to be exposed to a heat treatment, and to an optical article, especially a photochromic lens obtained by this method.