| 摘要 |
PURPOSE:To easily make scanning line intervals dense, by making an acoustic wave beam emitted from a vibrator array pass through a propagation medium, and after that, making it pass through an acoustic lens which is capable of sector linear conversion. CONSTITUTION:A probe consists of a vibrator array 1 formed by arraying plural striplike vibrators in a plane state, a packing material 2, a housing 3 for storing a propagation medium 4, and an acoustic lens 5. As for the housing 3, the vibrator array 1 is installed to its upper end, and it is formed so as to be spread out in a fan-shape toward its lower end. The lower end part of the housing 3 is made to tightly adhere onto a curved surfce 51 of the acoustic lens 5. The depth direction of the housing 3 and the acoustic lens 5 is formed almost uniformly and flatly. To each vibrator of the vibrator array 1, a delaying circuit to which a receiving circuit has been connected is connected. According to such a constitution, when sector scanning has been executed by phase-driving the vibrator array, an acoustic wave beam emitted from the tip of the probe becomes linear scanning, and by suitable controlling a delay time, a scanning line interval can be controlled optionally. |
