LIQUID CRYSTAL OPTICAL MODULATION ELEMENT AND OPTICAL HEAD DEVICE

PROBLEM TO BE SOLVED: To provide a liquid crystal optical modulation element capable of stably modulating a laser beam having a wavelength of at most 500 nm for a long period of time. SOLUTION: The liquid crystal optical modulation element to modulate a laser beam having a wavelength of at most 500...

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Bibliographische Detailangaben
Hauptverfasser:	HASEGAWA MAKOTO, YAMAMORI YAYOI, KUMAI YUTAKA, HODAKA HIROKI
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 INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS 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 liquid crystal optical modulation element capable of stably modulating a laser beam having a wavelength of at most 500 nm for a long period of time. SOLUTION: The liquid crystal optical modulation element to modulate a laser beam having a wavelength of at most 500 nm comprises a layer of a liquid crystal composition sandwiched between a pair of transparent substrates facing each other. The pair of transparent substrates include an electrode and an alignment layer comprising a polyimide on the surface which faces the other transparent substrate, the alignment layer and the liquid crystal composition are in contact, and the liquid crystal composition contains an antioxidant. COPYRIGHT: (C)2011,JPO&INPIT