Light beam deflector devices

Details Light beam deflector devices Light beam deflector devices

1988-06-27

1989-12-26

Laroche, Eugene R.

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369 44, 369119, G02F 111

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active

048894150

ABSTRACT:
A light beam deflection device comprises an acoustooptic element including a piezoelectric crystal base with a first flat surface and second and third flat surfaces each perpendicular to the first flat surface and opposite to each other and a transducer attached to the first flat surface of the piezoelectric crystal base and supplied with a deflection control signal, a first lens element having a first cylindrical surface forming a cylindrical lens and a first slanted flat surface opposite to the first cylindrical surface and disposed so that the first cylindrical surface faces the second flat surface of the piezoelectric crystal base, and a second lens element having a second cylindrical surface forming a cylindrical lens and a second slanted flat surface opposite to the second cylindrical surface and disposed so that the second cylindrical surface faces the third flat surface of the piezoelectric crystal base. A light beam passing through the first lens element, acoustooptic element and second lens element successively is deflected by the acoustoopic element in accordance with the deflection control signal.

REFERENCES:
patent: 3397605 (1968-08-01), Brueggemann
patent: 3435228 (1969-03-01), Gordon
patent: 4426134 (1984-01-01), Abramovitz et al.
patent: 4556290 (1985-12-01), Roulot

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