Photo-acoustic device and method for non-contact measurement of thin layers

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United States of America Patent

PATENT NO 10436754
APP PUB NO 20180003679A1
SERIAL NO

15702822

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Abstract

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A measuring device for non-mechanical-contact measurement of a layer, the measuring device including a light source operative to generate a pulse adapted to interact with the layer so as to generate a thermal wave in a gas medium present adjacent the layer. The thermal wave causes an acoustic signal to be generated. The measuring device further includes a detector adapted to detect a first signal responsive to the acoustic signal, the detector not being in mechanical contact with the layer. The first signal is representative of the measured layer.

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Patent Owner(s)

  • NOVELIS INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Abel, Bernd Markkleeberg, DE 11 56
Bauer, Andreas Gottingen, DE 143 895
Charvat, Ales Leipzig, DE 8 21
Erdmann, Stefan Atlanta, US 2 8
Prinzhorn, Heinrich Gottingen, DE 6 11
Wuttke, Thomas Renshausen, DE 9 113

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