Optical element using liquid crystal having optical isotropy

An optical element able to realize a response equal to or faster than that of a conventional one without depending on an incident polarization. The optical element comprises transparent substrates (5, 6), a lattice (2A) formed on the transparent substrate (5) by using an isotropic-refractive-index s...

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Bibliographische Detailangaben
1. Verfasser:	OOI YOSHIHARU,NOMURA TAKUJI,KOYANAGI ATSUSHI
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:	An optical element able to realize a response equal to or faster than that of a conventional one without depending on an incident polarization. The optical element comprises transparent substrates (5, 6), a lattice (2A) formed on the transparent substrate (5) by using an isotropic-refractive-index solid material and having a sectional structure of a cyclic unevenness, blue-phase liquid crystals (2B) filled in the recesses of the lattice (2A) having cyclic unevenness and having refractive index thereof changed isotropically, and transparent electrodes (3, 4) for applying a voltage to the blue-phase liquid crystals (2B), wherein a diffraction element (10) is formed by diffraction lattices (1) each consisting of a lattice (2A) and a blue-phase liquid crystal (2B), and the refractive index of the blue-phase liquid crystals (2B) constituting the diffraction element (10) is changed by a voltage applied via the transparent electrodes (3, 4).