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:
Sep. 20, 1994
Filed:
Mar. 31, 1992
Philippe Graindorge, Crimolois, FR;
Denis Trouchet, Le Pecq, FR;
Photonetics, Marly le Roi, FR;
Abstract
A measuring device comprises a light source with a wide spectrum feeding an optical sensor through an optical fiber. The sensor comprises an interferometer adjusted to a dull tint and an optical component sensitive to a measured parameter, which may be either a pressure, a measured displacement or an index of refraction of a fluid, a readout device includes the photodetector, a processing unit and an optical wedge for producing fringes, whose lateral positions, in contrast, are representative of the spectrum of the flux leaving the interferometer and analyzed by the photodetector. The processing unit measures the lateral position of the fringe and converts it into a value of the parameter P.