Optical disc memory system utilizing a smectic chiral liquid cry

Details Optical disc memory system utilizing a smectic chiral liquid cry Optical disc memory system utilizing a smectic chiral liquid cry

1986-06-13

1989-08-01

Faber, Alan

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

369110, 365108, 365117, G11B 1114, G11C 1304

Patent

active

048539112

ABSTRACT:
An improved magneto-optical disc memory recording and reading system with a ferroelectric liquid crystal (FLC) is shown. As FLC a chiral smectic liquid crystal is employed to exhibit a bistability between a pair of substrates which have easy polarization axes normal to each other. Informations to be recorded are written on the disc in terms of a binary system by use of the bistability.

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H. Birecki et al., "Erasable Optical Liquid Crystal Disc Memory", SPIE, 420, 194 (1983).

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