ABBLENDBARER RUECKBLICKSPIEGEL INSBESONDERE FUER KRAFTFAHRZEUGE

1. Non-dazzling rear-view mirror, particularly for motor vehicles, wherein at least one liquid crystal cell (51) is situated in front of its mirror surface (2), a control device (10) for the voltage applied to the electrodes (62, 64), of the liquid crystal cell (2) and an AC source (30) are incorpor...

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Bibliographic Details
Main Author KASPAR, RUDOLF
Format Patent
LanguageGerman
Published 15.10.1985
Edition4
Subjects
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
PERFORMING OPERATIONS
PHYSICS
TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
TRANSPORTING
VEHICLES IN GENERAL
VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR
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Summary:1. Non-dazzling rear-view mirror, particularly for motor vehicles, wherein at least one liquid crystal cell (51) is situated in front of its mirror surface (2), a control device (10) for the voltage applied to the electrodes (62, 64), of the liquid crystal cell (2) and an AC source (30) are incorporated in a powersupply circuit for the liquid crystal cell, the control device (10) having a light-sensitive resistor (11), situated on the mirror surface (2) in the incoming light, and a trigger stage (12) the control inlet (14) of which is connected to the resistor (11) and the outlet signals of which are fed to the control connector (34) of the AC source (30) characterized in that the trigger stage (12) is provided with a delay means (P2, C3) for delayed switching.
Bibliography:Application Number: AT19820106305T