DEVICE FOR ILLUMINATING A LIQUID CRYSTAL SCREEN

The invention relates to a device for illuminated a liquid crystal screen. Said device comprises a light box (1) which is situated behind the screen (2). Said light box (1) comprises a plurality of light sources (4). The device also comprises first means (3) for supplying the light sources (4). Said...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	BOUZINAC, ALAIN, DE LAUZUN, FREDERIC, LOPEZ, FRANCOIS
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BLASTING 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 ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY FREQUENCY-CHANGING HEATING INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21Sand F21V, RELATING TO THEFORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THELIGHT EMITTED LIGHTING MECHANICAL ENGINEERING NON-LINEAR OPTICS NON-PORTABLE LIGHTING DEVICES OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS SYSTEMS THEREOF TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS WEAPONS
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Beschreibung
Zusammenfassung:	The invention relates to a device for illuminated a liquid crystal screen. Said device comprises a light box (1) which is situated behind the screen (2). Said light box (1) comprises a plurality of light sources (4). The device also comprises first means (3) for supplying the light sources (4). Said first means (4) comprise second means, which enable at least one of the light sources to be switched off while the other sources remain illuminated, during continuous operation. L'invention se rapporte à un dispositif d'éclairage d'un écran à cristaux liquides. Le dispositif comporte une boîte à lumière (1) située derrière l'écran (2). La boîte à lumière (1) comporte une pluralité de sources de lumière (4). Le dispositif comporte en outre des premiers moyens (3) pour alimenter les sources de lumière (4). Les premiers moyens (4) comprennent des seconds moyens permettant, en régime permanent, d'éteindre au moins une des sources de lumière lorsque les autres sources restent allumées.