Light deflection apparatus

Details Light deflection apparatus Light deflection apparatus

1979-02-26

1981-11-24

Krawczewicz, Stanley T.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Using radiant energy

G01R 1338

Patent

active

RE0308064

ABSTRACT:
A deflection apparatus deflects a light beam in accordance with the characteristics of energizing signals to provide a trace of those signal characteristics on a display medium. The assembly includes a plurality of suspension galvanometers each having a coil responsive to an associated one of the signals to deflect a mirror positioned in the path of the light beam which in turn deflects the light beam. The galvanometers are suspended on a rigid supporting structure which is self-aligning. Pole pieces have a plurality of teeth which define secondary air gaps and provide a substantially constant, concentrated flux field for each of the coils. A printed circuit board cooperates with cover members to form a dust free enclosure.

REFERENCES:
patent: 2149442 (1939-03-01), Kennenstine
patent: 2161744 (1939-06-01), McCarty
patent: 2469265 (1949-05-01), Hathaway
patent: 2599661 (1952-06-01), Richardson
patent: 2692178 (1954-10-01), Grandadam
patent: 2845615 (1958-07-01), Bowman
patent: 2873429 (1959-02-01), Atchley et al.
patent: 2882498 (1959-04-01), Turre
patent: 3161826 (1964-12-01), Picard
patent: 3404342 (1968-10-01), Allen, Jr.
patent: 3821749 (1974-06-01), Andreev et al.

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