Accession Number : ADD013308
Title : Electronically Simulated Rotating Prism for Ultrasonic Beam Scanning.
Descriptive Note : Patent, Filed 31 Jul 80, patented 13 Apr 82,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC
Personal Author(s) : Auld, Bertram A
Report Date : 13 Apr 1982
Pagination or Media Count : 6
Abstract : A method and apparatus are described for electronically scanning a spherically focused beam in a c-scan mode using a spiral path rather than a traditional raster scan pattern. Essential to the technique is an electronically simulated rotating ultrasonic prism operating according to the general electrical input equation v (o) exp (i omega (o) t + ia cos (omega t) ). The technique allows use of a single delay line with simple connections and no requirements of multiple mixing.
Descriptors : *PATENTS, *ELECTRONIC SCANNERS, DELAY LINES, EQUATIONS, INPUT, MIXING, PATHS, PATTERNS, PRISMS(OPTICS), RADAR SCANNING, RASTERS, REQUIREMENTS, ROTATION, SCANNING, SIMULATION, ULTRASONIC PROPERTIES, ULTRASONICS, CLINICAL MEDICINE
Subject Categories : Electrical and Electronic Equipment
Medical Facilities, Equipment and Supplies
Distribution Statement : APPROVED FOR PUBLIC RELEASE