OPTICAL SHEET AND DISPLAY UNIT

PROBLEM TO BE SOLVED: To provide an optical sheet capable of eliminating rapid lowering of a luminance view angle while minimizing lowering amount of front luminance or while avoiding lowering of the front luminance. SOLUTION: The optical sheet includes a luminance enhancement film 33 and an anisotr...

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Bibliographische Detailangaben
Hauptverfasser:	HORII AKIHIRO, HOSHI MITSUNARI, OBATA KEI, HIRAI MOTOSUKE, MIZUNO YUTAKA
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING 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 FREQUENCY-CHANGING FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF HEATING INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21Sand F21V, RELATING TO THEFORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THELIGHT EMITTED LIGHTING MECHANICAL ENGINEERING NON-LINEAR OPTICS NON-PORTABLE LIGHTING DEVICES OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR SYSTEMS THEREOF TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide an optical sheet capable of eliminating rapid lowering of a luminance view angle while minimizing lowering amount of front luminance or while avoiding lowering of the front luminance. SOLUTION: The optical sheet includes a luminance enhancement film 33 and an anisotropic diffusion sheet 34 which are layered on each other. The luminance enhancement film 33 has a plurality of convexes 33a, that extend in a given direction and are arranged in parallel in a direction crossing the given direction, in-plane on the anisotropic diffusion sheet 34 side. The anisotropic diffusion sheet 34 has a plurality of convexes 34a, that are arranged in parallel in one direction and are arranged in parallel in a direction crossing the one direction, in-plane on the luminance enhancement film 33 side and has shape anisotropy and refractive index anisotropy in-plane. COPYRIGHT: (C)2009,JPO&INPIT