Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1992-01-17
1993-07-27
Sikes, William L.
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
359 62, G02F 11333, G02F 11335
Patent
active
052315258
ABSTRACT:
A uniform orientation can be brought about to the liquid crystal material enclosed in a liquid crystal device by applying a shearing force to the liquid crystal material while an electric field is being applied to the liquid crystal material, without requiring disposition of orientation layers nor accurate control of temperature. The orientation method can be efficiently conducted by an apparatus comprising a supply roll for supplying and conveying the liquid crystal device, a roller having conductive orientation rolls for bending the conveyed liquid crystal device and for applying an electric field to the liquid crystal material, a power source for applying a voltage to the conductive orientation roll, and a receiving means for receiving the liquid crystal device which has gone through the bending.
REFERENCES:
patent: 4973373 (1990-11-01), Hashimoto et al.
patent: 5069533 (1991-12-01), Yuasa et al.
patent: 5073219 (1991-12-01), McArdle et al.
patent: 5110623 (1992-05-01), Yuasa et al.
Ferroelectrics, 1984, vol. 59, pp. 137-144, "A Reliable Method of Alignment for Smectic Liquid Crystals," Patel et al.
Hashimoto Kenji
Yuasa Kimihiro
Idemitsu Kosan Co. Ltd.
Parker Kenneth
Sikes William L.
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