The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 04, 2007
Filed:
Feb. 01, 2005
Larry A. Jeffers, Minerva, OH (US);
John W. Berthold, Salem, OH (US);
Richard L. Lopushansky, The Woodland, TX (US);
David B. Needham, Magnolia, TX (US);
Larry A. Jeffers, Minerva, OH (US);
John W. Berthold, Salem, OH (US);
Richard L. Lopushansky, The Woodland, TX (US);
David B. Needham, Magnolia, TX (US);
Davidson Instruments Inc., The Woodlands, TX (US);
Abstract
A signal conditioner to measure the length of an interferometric gap in a Fabry-Perot sensor (interferometer). The invention includes a light source, a Fabry-Perot interferometer capable of spanning a range of gaps in response to physical changes in the environment, a second interferometer that is placed in series with the Fabry-Perot interferometer which does not filter any particular wavelengths of light but acts as an optical cross-correlator, a detector for converting the correlated light signal into electronic signals, and an electronic processor which controls system elements and generates a signal indicative of the length of the gap spanned by the Fabry-Perot sensor.