Electricity: measuring and testing – Magnetic – Magnetometers
Patent
1977-12-02
1980-01-22
Corcoran, Robert J.
Electricity: measuring and testing
Magnetic
Magnetometers
324 97, 250230, 73732, G01R 3302, G01L 704, G01D 530
Patent
active
041852397
ABSTRACT:
An optical null detector design achieves exceptional efficiency of light utilization with a minimum of components providing (1) extremely sharp null recognition, (2) superior long term stability, (3) extremely low power requirement, and (4) minimal size and weight as well as several other desirable properties.
The device involves the use of an inherently directional light emitting pattern (DLEP) of optimized geometry, generating nearly all usable light and eliminating several components functionally necessary, though performance limiting in conventional devices. It is particularly suited, though not restricted, to measurement and control applications by means of feedback techniques when high resolution, large dynamic range, and space economy are required simultaneously with sustained effectiveness over long periods of time.
REFERENCES:
patent: 2151627 (1939-03-01), Vacquier
patent: 3432671 (1969-03-01), Edmonds
patent: 3508142 (1970-04-01), Filloux
patent: 3535538 (1970-10-01), Filloux
patent: 3888362 (1975-06-01), Fletcher et al.
patent: 3994588 (1976-11-01), Marx
patent: 4032158 (1977-06-01), Stanwell
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