Title:
METHOD AND DEVICE FOR DISPLAYING MULTIMODEEIMAGE USING LIQUID CRYSTAL OPTICAL VALVE
Document Type and Number:
Japanese Patent JPS5643681
Kind Code:
A
Abstract:
Method of and apparatus for operating an image display system using a hydrid field effect liquid crystal light valve of the type wherein the molecules of the nematic liquid crystal layer are helycally twisted through an acute angle. A polarized projection beam is oriented with its polarisation direction within the acute twist angle and applied to a reflective face of the light valve. A writing light input image is applied to a photoresponsive opposite face in order to modulate the reflected projection beam. An electric field applied across the light is adjusted between two levels to produce either a simultaneous display of multi-color symbology and achromatic (black-white) gray scale images or a separate display of either one of them.
Inventors:
UIRIAMU PII BUREHA JIYUNIA
ERIIZAA UIINAAAABUNIA
POORU EFU ROBUSUTO
ERIIZAA UIINAAAABUNIA
POORU EFU ROBUSUTO
Application Number:
JP10705980A
Publication Date:
April 22, 1981
Filing Date:
August 04, 1980
Export Citation:
Assignee:
HUGHES AIRCRAFT CO
International Classes:
G09G3/36; G02F1/133; G02F1/135; G02F1/137; G02F1/139; G09F9/30; (IPC1-7): G02F1/135; G02F1/137; G09F9/35; G09G3/36