Elektro-Optische Vorrichtung und Anzeigevorrichtung

A lens (2) is arranged to form a spatially varying intensity distribution at a photoreceptor (12) within a pixel region so as to form a charge pattern thereon. The photoreceptor (12) is associated with a liquid crystal device (10) such that the presence of a suitable recording voltage across the pho...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	ROBINSON, MICHAEL GERAINT, TOMBLING, CRAIG
Format:	Patent
Sprache:	ger
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 LOGIC ELEMENTS OPTICS PHYSICS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	A lens (2) is arranged to form a spatially varying intensity distribution at a photoreceptor (12) within a pixel region so as to form a charge pattern thereon. The photoreceptor (12) is associated with a liquid crystal device (10) such that the presence of a suitable recording voltage across the photoreceptor (12) and liquid crystal device (10) causes regions (24) of the liquid crystal device (10) to switch to an opaque state when the light intensity on an associated region of the photoreceptor (12) exceeds a threshold value Ith. Removal of the recording voltage allows the image held in the liquid crystal device to be stored in a non-volatile manner and to be replayed by illumination with a read beam. An analogue image having a grey scale can be reproduced from the pixel region. A plurality of pixel regions can be provided as an array so as to recorded and replay monochrome images.