Light transmission control apparatus using air bubbles

Details Light transmission control apparatus using air bubbles Light transmission control apparatus using air bubbles

1983-07-27

1986-05-20

Arnold, Bruce Y.

350315, 350355, 40406, G02B 524, G05D 2504

Patent

active

045897301

ABSTRACT:
A light transmission control apparatus of the present invention relies on the principle of light transmission when an air bubble is produced in opaque liquid. In one form of the present invention, an optical switching device includes a container for containing therein opaque liquid, which is provided with transparent inlet and outlet sections. Transmission of light from the inlet section to the outlet section through the container is controlled by production or disappearance of air bubbles in the opaque liquid present between the inlet and outlet sections. In another form of the present invention, a display device includes a container for containing therein opaque liquid, which is provided with a transparent section defining an observation window or screen. A plurality of picture elements are provided in the form of an array, either one or two dimensional, as normally hidden by the opaque liquid. Air bubbles are produced in the opaque liquid to expose selected picture elements which define a reproduced image.

REFERENCES:
patent: 2701929 (1955-02-01), Lemelson
patent: 4261331 (1981-04-01), Stephens
patent: 4337998 (1982-06-01), Basiulis

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