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 oph...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: HERON, Bernard Mark, BROADBENT, Thomas David, GABBUTT, Christopher David, BERIT-DEBAT, Fabien, BIVER, Claudine, ARCHAMBEAU, Samuel, AIKEN, Stuart
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung: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.