LIGHT CONTROL FILM

A light control film is described comprising alternating transmissive regions and absorptive regions disposed between the light input surface and the light output surface. The absorptive regions have an aspect ratio of at least 30. In some embodiments, an absorptive layer or reflective layer is disp...

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Bibliographische Detailangaben
Hauptverfasser:	PRIOLO, Morgan A, BALTS, Corey D, WHEATLEY, John A, EPSTEIN, Kenneth A, SCHMIDT, Daniel J, KENNEY, Raymond J, CROSS, Elisa M, NELSON, Caleb T, GOTRIK, Kevin W, BOYD, Gary T
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ADVERTISING BLASTING COLORIMETRY CRYPTOGRAPHY DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING DISPLAY DISPLAYING DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL EDUCATION FIXED CONSTRUCTIONS FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES,FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS,BLINDS, GATES FREQUENCY-CHANGING HEATING LABELS OR NAME-PLATES LADDERS LIGHTING MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT MEASURING MECHANICAL ENGINEERING NON-LINEAR OPTICS NON-PORTABLE LIGHTING DEVICES OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS RADIATION PYROMETRY SEALS SIGNS SYSTEMS THEREOF TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF TESTING VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS WEAPONS
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Beschreibung
Zusammenfassung:	A light control film is described comprising alternating transmissive regions and absorptive regions disposed between the light input surface and the light output surface. The absorptive regions have an aspect ratio of at least 30. In some embodiments, an absorptive layer or reflective layer is disposed between the alternating transmissive regions and absorptive regions and the light input surface and/or light output surface. In another embodiment, the alternating transmissive regions comprise an absorptive material. The light control film can exhibit low transmission of visible light and high transmission of near infrared light. Also described is a light detection system comprising such light control films and a microstructured film. La présente invention concerne un film de contrôle de lumière qui comprend des régions de transmission alternées et des régions d'absorption disposées entre la surface d'entrée de lumière et la surface de sortie de lumière. Les régions d'absorption ont un rapport d'aspect d'au moins 30. Dans certains modes de réalisation, une couche d'absorption ou une couche réfléchissante est disposée entre les régions de transmission alternées et les régions d'absorption et la surface d'entrée de lumière et/ou la surface de sortie de lumière. Dans un autre mode de réalisation, les régions de transmission alternées comprennent un matériau absorbant. Le film de commande de lumière peut présenter une faible transmission de lumière visible et une transmission élevée de lumière proche infrarouge. L'invention concerne également un système de détection de lumière comprenant de tels films de commande de lumière et un film microstructuré.