Device for controlling the light passing to a light-sensitive el

Details Device for controlling the light passing to a light-sensitive el Device for controlling the light passing to a light-sensitive el

1984-11-08

1987-06-02

Corbin, John K.

350267, G02F 101, G02B 2602

Patent

active

046698299

ABSTRACT:
The device consists of a transparent container, partly filled with a ferromagnetic fluid surrounding a bubble of a transparent liquid. By an external magnetic field the ferromagnetic fluid is displaced within the container and moves the bubble making it pass between a light source and a light sensitive element.

REFERENCES:
patent: 3910687 (1975-10-01), Iwata
patent: 4298448 (1981-11-01), Muller et al.
Thompson "Liquid Magnetic Bubble Display", IBM Tech. Disclosure Bulletin, vol. 17, No. 6, pp. 1842-1843, Nov. 1974.
Runyan, "Electrostatic Liquid Display Devices", IBM Tech. Disc. Bull., vol. 22, No. 1, p. 325, Jun. 1979.
Garwin et al., "Ferrofluid Bubble Display", IBM Tech. Disc. Bulletin, vol. 18, No. 8, pp. 2675-2676, Jan. 1976.

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