Optically addressed liquid crystal light valve and optical logic

Details Optically addressed liquid crystal light valve and optical logic Optically addressed liquid crystal light valve and optical logic

1991-11-15

1992-12-01

Howell, Janice A.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 58, 359 59, 359 72, 359 86, 353 31, G02F 113, G03B 2100

Patent

active

051683822

ABSTRACT:
An optically addressed liquid crystal light valve includes a first substrate on which a plurality of liquid crystal driving circuits are formed, a second substrate provided with a transparent electrode, and a ferroelectric liquid crystal sandwiched between the two substrates. Each liquid crystal driving circuit includes a plurality of photodetectors and a logic circuit. An optical logic device includes an optically addressed liquid crystal light valve explained above and a plurality of masks for selectively transmit a plurality of lights. The masks may be replaced by a wavelength selecting filter including a plurality of regions each transmit a light having a specific wavelength to a corresponding photodetector of the light valve.

REFERENCES:
patent: 4884875 (1989-12-01), Okumura
patent: 4925276 (1990-05-01), McMurray, Jr. et al.
patent: 4941735 (1990-07-01), Moddel et al.
patent: 5046828 (1991-09-01), Takanashi et al.

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