Scanner

Details Scanner Scanner

1989-08-09

1990-11-27

Lee, John D.

G02B 610, G02B 129

Patent

active

049731211

ABSTRACT:
A scanner is disclosed which uses an electro-optic deflector to deflect a light beam onto a receiving medium. The deflector comprises a substrate formed of an optical material and a thin film optical waveguide fabricated on a top surface thereof. An array of parallel metallic electrodes are formed on the waveguide. Each of the electrodes is adapted to receive a voltage independently of the other electrodes. When a voltage is supplied to an electrode, a spatial variation in the index of refraction occurs across the thickness of the waveguide, and this spatial variation is used to deflect a light beam. In order to use the waveguide to scan a light beam across the receiving medium, the light beam is supplied to the waveguide in a direction transverse to the electrodes, and a voltage is sequentially supplied to the electrodes.

REFERENCES:
patent: 3924931 (1975-12-01), Chee
patent: 3958862 (1976-05-01), Scibor-Rylski
patent: 4389659 (1983-06-01), Sprague
patent: 4755036 (1988-07-01), Suzuki et al.
patent: 4758062 (1988-07-01), Sunagawa et al.
patent: 4770483 (1988-09-01), Ridgway

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