Title: Electrically controllable device having variable optical qualities or system which is holographic, thermotropic or which has suspended particles
Application Number: 02813940 Application Date: 2002.07.10
Publication Number: 1526085 Publication Date: 2004.09.01
Approval Pub. Date: 2006.10.11 Granted Pub. Date: 2006.10.11
International Classifi-cation: G02F1/133,G02F1/133,G02F1/01,G03B21/62,G02B5/32
Applicant(s) Name: Saint Gobain Address:
Inventor(s) Name: Giron Jean-Christophe
Attorney & Agent: zhong shouqi duan xiaoling
Abstract:
     The subject of the invention is an element having variable optical properties, comprising: (a) a system having electrically controlled variable light scattering, of the optical-valve or liquid-crystal system type, a suspended-particle system or a holographic or thermotropic system (a') which is associated with (b) at least one absorbent element, absorbing at least in the visible range. It applies especially to the manufacture of backprojection screens.
Time: 11
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