Optical switch, and a matrix of such switches

Details Optical switch, and a matrix of such switches Optical switch, and a matrix of such switches

1983-03-29

1986-04-15

Sikes, William L.

350 9615, 350267, G02B 514

Patent

active

045823910

ABSTRACT:
A light ray (6) passes through a light-passing region of a transparent wall (1). Adjacent to said light passing region there is a wettable drop-receiving region (4,5) with a liquid (7,8) thereon. A moving member (11,12) has a rest position in which the liquid is free to occupy only the wettable drop-receiving region, and a working position in which it moves at least a portion of the liquid onto the light-passing region, thereby modifying the light ray (6). Various kinds of switches, such as an on/off switch or a deflector switch, can be devised by suitable choice of the liquid (e.g. its refractive index, or its reflecting properties), and the angle of incidence of the light ray (6). The moving member may be controlled electromagnetically.

REFERENCES:
patent: 3572896 (1971-03-01), Bertram
patent: 3876288 (1975-04-01), Iwata et al.
Applied Physics Letters, vol. 40, No. 1, Jan. 11, 1982, New York 9 (US), J. L. Jackel et al., "Electrowetting Optical Switch", pp. 4-6.

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