Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1989-11-08
1992-01-07
James, Andrew J.
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
359103, G02F 113
Patent
active
050784773
ABSTRACT:
A ferroelectric liquid crystal cell comprising a ferroelectric liquid crystal having an antiferro-electric phase (S.sub.m C.sub.A.sup.*) or its composition and a pair of substrates having electrodes and holding said liquid crystal or its composition therebetween, characterized in that the layer structure of said liquid crystal in the antiferro-electric phase (S.sub.m C.sub.A.sup.*) has once been changed from a chevron structure to a bookshelf structure by application of a voltage to the electrodes.
REFERENCES:
patent: 4867539 (1989-09-01), Goodby et al.
Jono Masahiro
Ouchi Yukio
Yui Tomoyuki
Crane Sara W.
James Andrew J.
Mitsubishi Gas Chemical Company Inc.
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