Ultrasonic transducer comprising at least one row of ultrasonic elements
AssigneeN.V. Optische Industrie "De Oude Delft"
InventorMarcel R. de la Fonteijne
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Abstract
An array comprising at least one row of ultrasonic elements when energized generates a pressure pattern having side lobes when viewed in the lateral direction. Those side lobes give rise to undesirable grating lobes. The side lobes in both transverse and lateral direction can be suppressed by having identical and identically arranged ultrasonic elements (14) the width of which, viewed in the lateral direction, is greater than the pitch of the consecutive ultrasonic elements in the row.
Claims4
An ultrasonic transducer which comprises at least one row of ultrasonic elements having transverse side edges of consecutive elements extending obliquely with respect to a center axis (x) of said row of ultrasonic elements, each of said ultrasonic elements of a width in a lateral direction greater than a distance between central points of consecutive ultrasonic elements on said center axis of said row of ultrasonic elements.
Dependencies are inferred from the claim text.