COMPOSITE RETARDATION PLATE AND METHOD FOR PRODUCING THE SAME

PROBLEM TO BE SOLVED: To provide a thinner composite retardation plate capable of performing uniform polarization conversion in a broader wavelength range. SOLUTION: The composite retardation plate includes a retardation plate (1) obtained by polymerizing a liquid crystal compound having a polymeriz...

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Hauptverfasser:	OCHIAI KOSHIRO, KOBAYASHI TADAHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	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 NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a thinner composite retardation plate capable of performing uniform polarization conversion in a broader wavelength range. SOLUTION: The composite retardation plate includes a retardation plate (1) obtained by polymerizing a liquid crystal compound having a polymerizable group and a retardation plate (2) containing an organic modified clay composite and a binder resin, wherein the birefringence index Δn(λ) of the plate to light at a wavelength of λ (nm) satisfies expressions (3):Δn(451)/Δn(549)≤1.04 and (4):0.98≤Δn(628)/Δn(549). COPYRIGHT: (C)2011,JPO&INPIT