JPH0664419B

In a projection-type color display device utilizing a plurality of liquid crystal light valves for controlling a corresponding plurality of colored light beams and producing respective color images which are then optically synthesized and projected onto a screen, different types of a liquid crystal...

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Bibliographische Detailangaben
1. Verfasser:	ARIGA SHUJI
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES THEREFOR ADVERTISING APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM CINEMATOGRAPHY CRYPTOGRAPHY 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 DISPLAY DISPLAYING EDUCATION ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY ELECTROGRAPHY FREQUENCY-CHANGING HOLOGRAPHY LABELS OR NAME-PLATES NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHOTOGRAPHY PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION SEALS SIGNS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	In a projection-type color display device utilizing a plurality of liquid crystal light valves for controlling a corresponding plurality of colored light beams and producing respective color images which are then optically synthesized and projected onto a screen, different types of a liquid crystal light valve are used for forming those color images which undergo an even number of reflections during the optical synthesis on the one hand and those for forming color images which undergo an odd number of reflections during the optical synthesis on the other hand. The two types of liquid crystal light valves are different in a way that an optical arrangment of one type has a mirror-inverted like symmetric relation with respect to that of the other type.