Patent ID: 6370086
Filing Date: 2002-04-09
Classification: G01S,G10K

Abstract:
An ultrasound sensor for distance measurement, the ultrasound sensor comprising:a housing (10) with a front face (102) defining therein a tapered rectangle chamber (11); a piezoelectric ceramic element (20) received in the tapered rectangle chamber (11) and having wires (201) extending from an anode and a cathode thereof to a power source; and a plurality of tapered rectangle isolating layers (12, 13, 14) matingly received in the tapered rectangle shape chamber (11) and sequentially extending between the piezoelectric ceramic element (20) and the front face (102) of the housing (10); wherein due to the shape of the tapered rectangle chamber (11), the piezoelectric ceramic element (22) generates a specific detecting area having a flat lower edge and an arcuate upper edge.