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Sensor apparatus and method based on wavelength centroid detection

United States Patent

December 1, 2015
View the Complete Patent at the US Patent & Trademark Office
Sensor material is arranged to interact with input light and to asymmetrically alter a spectral distribution of the input light in response to presence of an external stimulus. A detector is configured to sense the altered input light and to generate at least one electrical signal comprising information about a shift in the centroid of a spectral distribution of the altered input light relative to a centroid of the spectral distribution of the input light.
Kiesel; Peter (Palo Alto, CA), Lochbaum; Alexander (Moutain View, CA), Raghavan; Ajay (Mountain View, CA), Saha; Bhaskar (Union City, CA), Staudt; Tobias (Palo Alto, CA), Sommer; Lars Wilko (Mountain View, CA)
Palo Alto Research Center Incorporated (Palo Alto, CA)
14/ 141,827
December 27, 2013
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH AND DEVELOPMENT This invention was made with government support under contract DE-AR0000274 awarded by ARPA-E (Advanced Research Projects Agency-Energy). The government has certain rights in the invention.