OPTICAL STORAGE DEVICES

An optical storage device comprises a homogenous film of polymer material into which data items are written by causing crosslinking of regions of the material by cycloaddition. This may be effected by writing with UV light or an ionising radiation. The crosslinking causes a change in the molecular a...

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Bibliographische Detailangaben
1. Verfasser:	CIARAN BERNARD MCARDLE
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:	An optical storage device comprises a homogenous film of polymer material into which data items are written by causing crosslinking of regions of the material by cycloaddition. This may be effected by writing with UV light or an ionising radiation. The crosslinking causes a change in the molecular alignment in the region. The polymer material may be a nematic liquid crystalline polyester of the structure: g