Electrochromic compounds and optical articles containing them
申请人:Essilor International
公开号:US10563120B2
公开(公告)日:2020-02-18
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.
ELECTROCHROMIC COMPOUNDS AND OPTICAL ARTICLES CONTAINING THEM
申请人:Essilor International
公开号:US20180194995A1
公开(公告)日:2018-07-12
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.