Method and device for driving electrooptical light shutter

Details Method and device for driving electrooptical light shutter Method and device for driving electrooptical light shutter

1989-12-05

1992-06-23

Laroche, Eugene R.

Optical: systems and elements

Optical modulator

Light wave temporal modulation

359246, 359249, 359251, 359254, 359276, G02F 103, G02F 101

Patent

active

051248310

ABSTRACT:
A method of and a device for driving a light shutter having an electrooptical effect to polarize an incident light by applying an electric field to the light shutter. When the light shutter is made activate, an excessive electric field in addition to a half-wave electric field which is a specific one to polarize an incident light at 90.degree. in the static characteristics of the light shutter is applied to the light shutter initially, and subsequently, the half-wave electric field only is applied to the light shutter. To discharge the electric charge accumulated in the light shutter, no voltage is applied to electrodes each of which is provided on the wall of the light shutter so as to oppose each other subsequent to the application of the electric field until the next application thereof.

REFERENCES:
patent: 3492492 (1970-01-01), Ballman et al.
patent: 3639771 (1972-02-01), Borrelli et al.
patent: 3737211 (1973-06-01), Cutchen et al.
patent: 4629993 (1986-12-01), Bouvier et al.
patent: 4932761 (1990-06-01), Shingaki et al.
McCann et al., "A Versatile Electronic Light Shutter Composed of a High Speed Switching Circuit Coupled with a Lithium Niobate Pockel's Cell".

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