Mechanical sector scanner head and power train

Details Mechanical sector scanner head and power train Mechanical sector scanner head and power train

1980-08-15

1982-05-18

Farley, Richard A.

Communications, electrical: acoustic wave systems and devices

Echo systems

Distance or direction finding

73620, 128660, 367151, 367910, G01S 1502, A61B 502

Patent

active

043308740

ABSTRACT:
A curved faced, disc shaped transducer and an oppositely facing, circular angularly disposed mirror form the transmission and reception path of a mechanical sector scan imaging system. The transducer and mirror are mounted on a common axis, and a shaft upon which the mirror is affixed oscillates about that axis. Through a belt drive mechanism, a motor provides the oscillating motion, in turn scanning the ultrasound beams through the subject by virtue of the mirror motion. An optical encoder records positional information from the motor, for coordination of the mirror oscillation with transducer signals, and thereby for the assembly of a composite image.

REFERENCES:
patent: 2459162 (1949-01-01), Hayes
patent: 4084582 (1978-04-01), Nigam
patent: 4208602 (1980-06-01), Stoller
patent: 4274421 (1981-06-01), Dory

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