Metal working – Method of mechanical manufacture – Electrical device making
Patent
1991-04-03
1993-10-26
Arbes, Carl J.
Metal working
Method of mechanical manufacture
Electrical device making
2522991, 252585, 359240, 359246, H01B 1900, G02F 100
Patent
active
052554287
ABSTRACT:
An optical voltage sensor utilizing an electrooptic polymer is disclosed for application to electric power distribution systems. The sensor, which can be manufactured at low cost in accordance with a disclosed method, measures voltages across a greater range than prior art sensors. The electrooptic polymer, which replaces the optical crystal used in prior art sensors, is sandwiched directly between two high voltage electrodes. Voltage is measured by fiber optical means, and no voltage division is required. The sample of electrooptic polymer is fabricated in a special mold and later mounted in a sensor housing. Alternatively, mold and sensor housing may be identical. The sensor housing is made out of a machinable polymeric material and is equipped with two opposing optical windows. The optical windows are mounted in the bottom of machined holes in the wall of the mold. These holes provide for mounting of the polarizing optical components and for mounting of the fiber optic connectors. One connecting fiber is equipped with a light emitting diode as a light source. Another connecting fiber is equipped with a photodiode as a detector.
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Gottsche Allan
Perry Joseph W.
Arbes Carl J.
California Institute of Technology
Tachner Leonard
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