Patent ID: 7272975
Filing Date: 2007-09-25
Classification: G01F,G01N,G10K

Abstract:
1. An ultrasonic beam shaping device comprising, a) a plate-like beam shaping element formed of opaque material, said beam shaping element having first and second conical surfaces formed as opposite surface portions of said beam shaping element, said first and second conical surfaces having respective first and second axes, said first and second axes being co-axial, b) a cylindrical aperture in said beam shaping element formed along the co-axial axes of said first and second conical surfaces, said cylindrical aperture having a central axis co-axial with the first and second co-axial axes of said conical surfaces, said cylindrical aperture intersecting said first and second conical surfaces to form a first circular open end of said aperture at said first conical surface and a second circular open end of said cylindrical aperture at said second conical surface, c) a mounting plate for an ultrasonic transmitter and means for adjusting the distance between said beam shaping element and the mounting plate, d) and wherein said means for adjusting the distance between said beam shaping element and said mounting plate include spacer legs joining said beam shaping element and said mounting plate to permit adjustable movement of said beam shaping element relative to said mounting plate.