Electrochromic mirrors hermetically sealed from the ambient environment and comprising at least one electrode, at least one electrochromic layer, a reflector, at least one ion-conducting layer, and at least one ion-supplying layer which simultaneously is an ion-storing layer and is not identical with...http://www.google.es/patents/US4465339?utm_source=gb-gplus-sharePatente US4465339 - Electrochromic mirrors
