Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1991-03-12
1993-08-24
Sikes, William L.
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
359 75, 359 78, 428 1, G02F 11337, C09K 1900
Patent
active
052393984
ABSTRACT:
A liquid crystal device comprises a pair of opposing substrates and a liquid crystal rendering a chiral smectic phase, disposed between said pair of substrates, wherein at least one of the substrates is provided with an alignment film comprising a polymer containing a skeleton selected from the group consisting of acetylene, phenylene, phenylenevinylene, phenylenexylidene, benzyl, phenylene sulfide, dimethylparaphenylene sulfide, thienylene, furan, selenophene, vinylpyridine, vinylnaphthalene, vinylferrocene, vinylcarbazole, phenylene oxide, phenylene selenide, heptadiyne, benzothiophene, thiophene, pyrrole, aniline and naphthylene. The liquid crystal device is used for a display system and effects a high contrast display without after-image.
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Eguchi Ken
Kawagishi Hideyuki
Matsuda Hiroshi
Yanagisawa Yoshihiro
Canon Kabushiki Kaisha
Gross Anita Pellman
Sikes William L.
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