Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1991-02-28
1993-02-23
Sikes, William L.
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
359101, 359105, 359 78, 340784, G02F 1133, G09G 336
Patent
active
051895358
ABSTRACT:
A liquid crystal display element comprising a liquid crystal composition having an optically active compound as at least one constituent and showing a cholesteric phase in a bulk state, wherein the liquid crystal composition is arranged between substrates, at least one of which is provided with a transparent electrode, so that long axes of individual liquid crystal molecules are in parallel to one another an are oriented in the same direction as the surfaces of the substrates, and the long axes of the molecules are uniformly aligned in parallel, vertically or inclined to the surfaces of the substrates, wherein the gap d (.mu.m) between the substrates and the size p (.mu.m) of the helical pitch shown by the cholesteric phase liquid crystal at room temperature when an electric field is not applied satisfy the following relationships:
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Iwasaki Masayuki
Mochizuki Akihiro
Onda Fumiyo
Yamagishi Yasuo
Yoshihara Toshiaki
Duong Tai V.
Fujitsu Limited
Sikes William L.
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