US 2002/0171788 A1 · Electrically controllable system and glazing unit having a functional component for controlling light transmission that includes at least one transparent layer slowing photo reduction degradation of an active element

Abstract

The subject of the invention is an electrically controllable system having variable light scattering and/or transmission, comprising a functional film (1, 21) provided with electrically conducting layers (2, 3, 22, 23), the said film having active elements in the form of polarizing particles, or of liquid crystals associated with dichroic dyes, and in suspension in a medium. The said system is provided with one or more means preventing/compensating for degradation by photoreduction of at least some of the active elements, especially degradation of the dichroic dyes and/or that of the polarizing particles.

Claims25

Dependent claims

Electrically controllable system having variable light scattering and/or transmission comprising a functional film provided with electrically conducting layers, the said film having active elements in the form of polarizing particles, or of liquid crystals associated with dichroic dyes, and in suspension in a medium, wherein the said system is provided with one or more means preventing/compensating for degradation by pbotoreduction of at least some of the active elements, especially degradation of the dichroic dyes and/or that of the polarizing particles.

Dependencies are inferred from the claim text.

Facts

Application

10/196,361Filed 17 Jul 2002

Priority

FR 98/0727710 Jun 1998

Published

21 Nov 2002

Term ends

Not estimatedThe source records don’t support an estimate.

Classification13 codes

B32B 17/10055
With at least one intermediate layer consisting of a glass sheet: with at least one intermediate air space
B32B 17/10036
Characterized by the number, the constitution or treatment of glass sheets: comprising two outer glass sheets
B32B 17/10174
Functional features of the laminated safety glass or glazing: coatings of a metallic or dielectric material on a constituent layer of glass or polymer
B32B 17/10504
Optoelectronic, i.e. optical valve: liquid crystal layer

Electrically controllable system and glazing unit having a functional component for controlling light transmission that includes at least one transparent layer slowing photo reduction degradation of an active element

Life of this patent

Electrically controllable system and glazing unit having a functional component for controlling light transmission that includes at least one transparent layer slowing photo reduction degradation of an active element

Life of this patent

Abstract

Claims25