Abstract: This invention relates to an electrochromic device comprising a layer (2') of an electrochromic product held between two conducting layers (5',6') each formed on one face of a transparent plate (3',4'), electrodes formed on each of the conducting layers, and a source of direct current for selectively supplying these electrodes with electrical energy. Electrodes (8', 9', 10, 11) are of elongated shape and extend over facing surfaces of the two conducting layers (5',6'), essentially symmetrical with respect to the plane of the electrochromic layer (2').The invention has application to windows in the building industry or the automobile industry (windshields, windows, rear view mirrors, etc.

Abstract: This invention concerns an electrolytic material in the form of a solid gel for the modulation of light comprising a homogeneous mixture of:(A) at least one organic solvent;(B) at least one salt of an electrodepositable metal;( C ) at least one organic acid; and(D) at least one salt of a non-electrodepositable metal that facilitates the solubilization of metal salt (B);characterized in that it comprises in addition:(E) at least one agent gelling said mixture to a non-flowing, transparent, solid gel state.