Electro-optical light shutter device

Details Electro-optical light shutter device Electro-optical light shutter device

1977-03-16

1979-05-15

Corbin, John K.

G02F 105

Patent

active

041545052

ABSTRACT:
In an electro-optical light shutter device using a solid-solution ceramic material for alternate transmission and interception of light, a first voltage is applied to the solid-solution ceramic material in the operating (open) position of the shutter, and a second voltage of polarity opposite to that of the first voltage and having an absolute value smaller than that of the first voltage is applied to the solid-solution ceramic material in the non-operating (closed) position of the shutter. The solid-solution ceramic material has a composition in which a ferroelectric phase and a non-ferroelectric phase adjoin each other through a morphotropic phase boundary.

REFERENCES:
patent: 3823998 (1974-07-01), Yazaki
patent: 3998523 (1976-12-01), Otomo
Cutchen et al. "Plzt Electrooptic Shutters; Applications", Applied Optics, vol. 14, 8-1975, pp. 1866-1873.

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