USA As Represented by Secretary of the Navy

Stephen E Forsythe

Kim C Benjamin

Andrew J Hull

Lee E Estes

Benjamin A Cray

Kenneth M Walsh

Walter H Boober

An acoustic sensing device includes a housing having an internal cavity filled with a vibration decoupling medium. An acoustic window formed of an acoustically transparent material is mounted in the housing. This mounting can be by antivibration mounts to prevent housing noise from affecting the acoustic window. A scanning laser vibrometer is positioned within the housing and directed to detect vibrations of the acoustic window. Antivibration mounts are joined between said scanning laser vibrometer and said housing. In further embodiments, the scanning laser vibrometer detects vibrations at a plurality of locations on the acoustic window forming a virtual array.

Adaptive high frequency laser sonar system

A composite transducer array comprises a piezoelectric polymer composite panel, a continuous electrode coupled to a first surface of the composite panel, and a plurality of electrically-isolated electrode segments coupled to a second surface of the composite panel. Each electrode segment is shaped as an angular segment of a circular ring. The electrode segments are arranged to define an array of concentric circular rings of electrode segments.

Broadband and wide field of view composite transducer array

Growing community of inventors

Portsmouth, RI, United States of America

Stephen E Forsythe