Static information storage and retrieval – Magnetic bubbles – Guide structure
Patent
1979-05-07
1981-08-25
Punter, William H.
Static information storage and retrieval
Magnetic bubbles
Guide structure
350390, 365117, G02F 103
Patent
active
042855764
ABSTRACT:
Light is selectively gated with an array of electrically switchable illuminated light gates in an electrooptically active solid-state material displaying field-induced and photoinduced birefringence between a light polarizer and a complementary light analyzer. The illuminated light gates are selectively switched through field-induced birefringence by selective application of externally provided electric potentials, until photoinduced birefringence occurs in the light gate array. Such photoinduced birefringence is neutralized by illuminating the light gates in circumvention in either the polarizer or the analyzer while maintaining externally provided electric potentials away from the light gates.
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Garland Thomas H.
Zimmerman Michael T.
Bell & Howell Company
Punter William H.
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