ANGLE SWITCHABLE CRYSTALLINE COLLOIDAL ARRAY FILMS

• Main Authors: PURDY, SEAN, XU, XIANGLING, MUNRO, CALUM H
• Format: Patent
• Language: English; French
• Published: 23.12.2010
• Subjects: BOOK COVERS; BOOKBINDING; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR; FILES; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; LOOSE LEAVES; MOVABLE-STRIP WRITING OR READING APPARATUS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PERFORMING OPERATIONS; PHYSICS; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR; SPECIAL PRINTED MATTER; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TRANSPORTING

A radiation diffractive film is disclosed, which includes a viewing surface, with at least a portion of the viewing surface residing in a viewing plane. The film comprises an ordered periodic array of particles received in a matrix material, the array of particles having a crystalline structure, wherein the crystalline structure defines (i) a plurality of first crystal planes of the particles that diffract infrared radiation and (ii) a plurality of second crystal planes of the particles that diffract visible radiation. L'invention porte sur un film de diffraction de rayonnement, lequel film comprend une surface de visualisation, au moins une partie de la surface de visualisation se trouvant dans un plan de visualisation. Le film comprend un réseau périodique ordonné de particules reçues dans un matériau de matrice, le réseau de particules ayant une structure cristalline, la structure cristalline définissant (i) une pluralité de premiers plans cristallins des particules qui diffractent un rayonnement infrarouge et (ii) une pluralité de seconds plans cristallins des particules qui diffractent un rayonnement visible.