Active device having variable energy/optical properties

US8035882B2 · kind B2 · utility

Assignee

• SAINT-GOBAIN GLASS FRANCE · FR

Inventors

• Xavier Fanton · Aulnay-sous-Bois, FR
• Jean-Christophe Giron · Aachen, DE
• Philippe Letocart · Raeren, BE
• Rino Messere · Modave, BE
• Annabelle Andreau-Wiedenmaier · Aachen, DE
• Manfred Gillissen · Herzogenrath, DE
• Karl-Heinz Paffen · Herzogenrath, DE
• Hermann Joeris · Freudenberg, DE

Key dates

• Filing date: Jul 20, 2007
• Grant date: Oct 11, 2011
• Expiry date: Jul 20, 2027

Classification

• Technology area (CPC G): Physics
• CPC primary: G02F2001/1557
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

The invention relates to an active device having variable energy/light transmission properties (100) comprising an active system (1, 12) between a protective substrate (2) and a protective cover (3), selected from an essentially inorganic electrochromic system, a light valve system, a liquid crystal system, a gasochromic system, a thermochromic system, means leakproof to liquid water and/or water vapor, a surround (50) made from at least one metal based part (5a, 5b) on the periphery of the device, the surround being assembled with the cover and with the substrate by assembling means (61′ to 64′) forming at least part of the means leakproof to water vapor.