To provide an infrared-light reflective plate having the improved selective reflectivity characteristics. Disclosed is an infrared-light reflective plate reflecting an infrared-light of equal to or longer than 700nm comprising a substrate, and, on at least one of surfaces of the substrate, at least four light-reflective layers, X1, X2, X3 and X4, formed of a fixed cholesteric liquid crystal phase, and disposed in this order from the substrate, wherein the reflection center wavelengths of the light-reflective layers X1 and X2 are same with each other and are » 1 (nm), and the two layers reflect circularly-polarized light in opposite directions; the reflection center wavelengths of the light-reflective layers X3 and X4 are same with each other and are » 2 (nm), and the two layers reflect circularly-polarized light in opposite directions; and » 1 <» 2 is satisfied.
INFRARED LIGHT REFLECTING PLATE AND LAMINATED GLASS
INFRAROTLICHT-REFLEKTORPLATTE UND VERBUNDGLAS
PANNEAU RÉFLÉCHISSANT LA LUMIÈRE INFRAROUGE ET VERRE FEUILLETÉ
2021-07-21
Patent
Elektronische Ressource
Englisch
IPC: | G02B Optische Elemente, Systeme oder Geräte , OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS / B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / B60J WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES , Fenster, Windschutzscheiben und bewegbare Dächer, Türen oder Ähnliches für Fahrzeuge / E06B Feste oder bewegliche Abschlüsse für Öffnungen in Bauwerken, Fahrzeugen, Zäunen oder ähnlichen Einfriedungen allgemein, z.B. Türen, Fenster, Läden, Tore , FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES, OR LIKE ENCLOSURES, IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES |
Europäisches Patentamt | 2015
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