Boots – shoes – and leggings
Patent
1988-10-31
1991-06-11
Lall, Parshotam S.
Boots, shoes, and leggings
73800, G06F 1520
Patent
active
050238450
ABSTRACT:
A method and apparatus for the two dimensional measurement of displacements of sample materials using a photodetector grid array and optical fiber embedded in the test specimen. The system consists of a light source which is passed into one end of an optical fiber which has been embedded a beam specimen, so that when the beam is placed in motion, the light traverses through the fiber and emerges from the opposite end where its projected image traces a pattern simulating that of the beam. In a preferred embodiment, the collimated exiting light is incident upon a light beam splitter which directs equal portions of the light toward a quadrant photovoltaic cell device and toward a charge couple device (CCD). The CCD is connected to an optoelectronic viewing device for initial calibration, display and monitoring. The photodetector array is connected to a translator/amplifier which increases the photocells' source currents and converts them to equivalent voltages for output to a digital data processing terminal. The processing terminal integrates all simultaneous measurements by vectorial resolution of the voltage related deflections' magnitude and direction.
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Crane Roger M.
Fischer Eugene C.
Lall Parshotam S.
Marsh Luther A.
O'Dwyer Thomas S.
Ramirez Ellis B.
Stowe John H.
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