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:
Jan. 10, 2012
Filed:
Aug. 16, 2011
Nicholas Lagakos, Silver Spring, MD (US);
Joseph A. Bucaro, Herndon, VA (US);
Jacek Jarzynski, Bethesda, MD (US);
Barbara Jarzynski, Legal Representative, Bethesda, MD (US);
Nicholas Lagakos, Silver Spring, MD (US);
Joseph A. Bucaro, Herndon, VA (US);
Jacek Jarzynski, Bethesda, MD (US);
Barbara Jarzynski, legal representative, Bethesda, MD (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
A fiber optic hydrophone has a reflective diaphragm having an exposed face and a reflective protected face, at least one transmitting multimode optical fiber having an end spaced apart from the protected face of the diaphragm positioned to emit light toward the diaphragm housing, and a reservoir. A cavity is defined by the diaphragm and the interior surface of the housing. Silicone oil and a compliant elastomeric material with embedded air bubbles are located in the cavity. Ports between the cavity and the reservoir and the reservoir and the exterior of the hydrophone allow static pressure communication between the cavity and the exterior of the hydrophone. The fiber optic probe can have one transmitting multimode optical fiber and six receiving multimode optical fibers, or more or fewer optical fibers. A grating can protect the diaphragm from environmental damage.