Electrochromic compounds and optical articles containing them The present invention relates to a group of novel electrochromic compounds. More specifically, it relates to electrochromic compounds comprising one or several pyridinium rings and the use of these compounds as a variable transmittance medium for the manufacture of an optical article, such as an ophthalmic lens.
电致变色化合物和含有这些化合物的光学产品 本发明涉及一组新型电致变色化合物。更具体地说,本发明涉及由一个或多个
吡啶鎓环组成的电致变色化合物,以及使用这些化合物作为可变透光介质来制造光学产品,如眼科镜片。