Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1983-12-27
1985-07-16
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
356350, 250231R, G02B 514
Patent
active
045298769
ABSTRACT:
A transducer utilizes a laser source, photoelastic waveguides, two optical beam paths and a detector for processing optical energy from the laser through a stress transfer medium and thereby detects stress forces present on the transducer. This allows forces such as pressure, strain, voltage, or current to be detected and converted from one form to another for measurement of the force and response thereto. Input forces are detected as optical frequency shifts and converted to electrical signal outputs for indicating circuitry. In an integrated optic format, the transducer package volume is small, allowing ready use in guidance or navigation systems. Light generated by the laser travels along two paths, is optically stressed by the force transfer member and is combined with a reference signal to obtain the stress intelligence.
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Brophy J. Jon
Bush Freddie M.
Gibson Robert P.
Lane Anthony T.
Nelms David C.
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