Optimally clocked trim retarders

A trim retarder for a liquid crystal display based projection system including a light source, a polarizer/analyzer, a liquid crystal display panel, and a projection lens, is clocked to an optimal azimuthal angle that provides a system contrast level substantially unaffected by the orientation of th...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	TAN KIM L, MACHE ANTHONY J. JR
Format:	Patent
Sprache:	chi ; 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 NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	A trim retarder for a liquid crystal display based projection system including a light source, a polarizer/analyzer, a liquid crystal display panel, and a projection lens, is clocked to an optimal azimuthal angle that provides a system contrast level substantially unaffected by the orientation of the slow axis of the liquid crystal display panel.