Electrochromic single and two-core viologens and optical articles containing them

The present invention relates to a group of novel electrochromic materials. More specifically, it relates to electrochromic materials based on either single or two-core viologen systems and the use of these viologen systems as a variable transmittance medium for the manufacture of an optical article...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: HERON, Bernard Mark, GABBUTT, Christopher David, BERIT-DEBAT, Fabien, BIVER, Claudine, AIKEN, Stuart, ARCHAMBEAU, Samuel, DULUARD, Sandrine
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:The present invention relates to a group of novel electrochromic materials. More specifically, it relates to electrochromic materials based on either single or two-core viologen systems and the use of these viologen systems as a variable transmittance medium for the manufacture of an optical article, such as an ophthalmic lens.