Liquid crystal cells – elements and systems – Liquid crystal system
Patent
1998-06-17
2000-11-28
Sikes, William L.
Liquid crystal cells, elements and systems
Liquid crystal system
23546235, G02F 1139, G06K 710
Patent
active
061542601
ABSTRACT:
An apparatus for deflecting light of the present invention comprises: (a) at least one pair of transference electrodes arranged facing one another; (b) a drive circuit which applies a voltage among the transference electrodes; and (c) a liquid crystal which is inserted among the transference electrodes, and whose parallel stripes that function as a diffraction grating when the voltage is applied among the transference electrodes are produced at a pitch corresponding to the applied voltage. The light can be scanned if a diffracted light by the apparatus for deflecting light is converted into a scanning light and a voltage value is changed temporally to apply the voltage among the transference electrodes. In a device for reading information, the scanning light is reflected in a bar code and the reflected light is detected by an apparatus for detecting light. In a device for stereoscopic display of the present invention, the apparatus for deflecting light is used as beam deflection means for deflecting the light beamed from a picture element which organizes the pictures of the picture display means.
REFERENCES:
patent: 3813145 (1974-05-01), Hedman
patent: 4945407 (1990-07-01), Winnek
patent: 4957351 (1990-09-01), Shioji
patent: 5210627 (1993-05-01), Toide et al.
patent: 5258833 (1993-11-01), Schenk
A.R. Tanguay, Jr., et al., Physical characterization of the variable grating mode liquid crystal device, Optical Engineering, Nov.-Dec. 1983, vol. 22, No. 6, pp. 687-694.
Aritake Hirokazu
Eguchi Shin
Ishimoto Manabu
Matsuda Takahiro
Mizuno Yoshihiro
Duong Tai V.
Fujitsu Limited
Sikes William L.
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