Optics: measuring and testing – By particle light scattering – With photocell detection
Patent
1996-06-19
1998-09-08
Turner, Samuel A.
Optics: measuring and testing
By particle light scattering
With photocell detection
356361, G01B 902
Patent
active
058052836
ABSTRACT:
An interferometric environmental monitoring system having an active beam and a reference beam, each following an optical path, a detector system including a detector assembly, a pair of reflecting elements, the first reflecting element receiving the active beam and reflecting it, the second reflecting element receiving the reference beam and reflecting it. The reflected active and reflected reference beams are recombined into a recombined beam, which is directed to the detector assembly. The detector assembly monitors the central fringe of an interference pattern formed by interference when combining the active and the reference beams and providing an output signal related to the movement of the central fringe. The output signal being utilized to provide a signal representative of a condition which measurably affects the active beam.
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Excalibur Engineering, Fringe Locker III. 1260 North 200 East Suite 2, Logan, Utah 84321. R. Rallison, Jeff Brown, Jane Brown (1993).
Callahan Heidi L.
Caulfield Henri John
Ludman Jacques E.
Ludman Jacques J.
Watt David W.
Cohen Jerry
Erlich Jacob N.
Northeast Photosciences, Inc.
Turner Samuel A.
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