Optics: measuring and testing – By light interference – For dimensional measurement
Reexamination Certificate
2008-05-15
2010-10-26
Lee, Hwa S. A (Department: 2886)
Optics: measuring and testing
By light interference
For dimensional measurement
C356S432000
Reexamination Certificate
active
07821646
ABSTRACT:
A method of ultrasonic testing comprising conditioning a radiation wave from a laser source by efficiently converting the radiation wave's wavelength to a mid-IR wavelength for enhanced ultrasonic testing of a composite. The method includes passing the radiation wave through a first optical frequency converter where the radiation wave is converted into a signal wave and an idler wave, where the idler wave is at a mid-IR wavelength. The method further includes directing the signal and idler waves to a second optical frequency converter where the signal wave wavelength is converted to a mid-IR wavelength which combines with the idler wave to form a generation wave. The generation wave is directed at a composite surface to be tested.
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Deaton, Jr. John B.
Drake, Jr. Thomas E.
Dubois Marc
Filkins Robert
Lorraine Peter W.
A Lee Hwa S.
Bracewell & Giuliami LLP
Lockheed Martin Corporation
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