Patent ID: 8482839

Claim:
A process for producing an electrochromic lens comprising an electrode and a counterelectrode separated by a solid polymer electrolyte, the electrode being formed by a transparent substrate bearing an electrically conductive film coated with a film of a cathode active material with electrochromic properties, the counterelectrode being formed by a transparent substrate bearing an electrically conductive film coated with a film of an anode active material with electrochromic properties, the electrolyte being formed by an ion-conducting material comprising a salt dissolved in a solvating solid polymer, said process comprising preparing said electrode and said counterelectrode, and assembling them via their faces bearing the electrochromic material by intercalating between said faces an electrolyte membrane, wherein the electrolyte membrane is intercalated in the form of a composition free of volatile liquid solvent and comprising a polymer precursor and a salt, said composition being liquid or having a dynamic viscosity μ of between 100 and 10 6 Pa·s, and wherein the composition forming the electrolyte is a liquid composition, and said polymer precursor is subjected to polymerization or crosslinking after placed in contact with at least one of the electrode and the counterelectrode.