Accession Number : ADD000228
Title : Acoustic Image Conversion Tube.
Descriptive Note : Patent,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C
Personal Author(s) : Hagemann,Julius
Report Date : 26 Mar 1974
Pagination or Media Count : 5
Abstract : The patent describes an underwater acoustic device comprising in combination an annular support member, a vacuum backed circular piezoelectric plate mounted on said support member, and a substantially mechanically rigid wall element mounted on said support member. It forms with the front face of said plate an enclosure, and an acoustic energy propagating liquid fills the free space within said enclosure, said liquid at all times being under a pressure no greater than atmospheric but not less than the vapor pressure of said liquid at the temperature of the water in which the device is to be used.
Descriptors : *Image converters, *Patents, Acoustic equipment, Image tubes, Underwater sound equipment
Subject Categories : Electrooptical and Optoelectronic Devices
Distribution Statement : APPROVED FOR PUBLIC RELEASE