Optics: measuring and testing – By light interference – For dimensional measurement
Reexamination Certificate
2006-09-11
2009-12-29
Chowdhury, Tarifur (Department: 2886)
Optics: measuring and testing
By light interference
For dimensional measurement
Reexamination Certificate
active
07639368
ABSTRACT:
An algorithm and method for calculating an interferometric gap is disclosed that comprises providing an interferometric sensor having a first gap and an interferometric correlation element having a second gap placed in series with the first gap. A correlation burst waveform is generated having a plurality of features wherein the shape of the burst waveform evolves across the range of the second gap. Means are provided for tracking the features across the entire range of gaps and determining the dominant peak or dominant valley to determine the first gap.
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Booth Albanesi & Schroeder LLC
Chowdhury Tarifur
Cook Jonathon D
Halliburton Energy Service,s Inc.
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