Transducer
    53.
    发明授权
    Transducer 失效
    传感器

    公开(公告)号:US5309411A

    公开(公告)日:1994-05-03

    申请号:US986716

    申请日:1992-12-08

    IPC分类号: B06B1/06 G10K11/32 H04R17/00

    摘要: A transducer apparatus and method for generating sonic sound waves having a far field wavefront amplitude pattern in a Bessel or Gaussian distribution is disclosed. The transducer includes a piezoelectric element having uniformly poled dipoles formed therein. An unpoled backing body having the same dielecctric constant as the piezoelectric element contacts and is attached to the piezoelectric element. An indentation shaped to produce a beam amplitude distribution of a predetermined function is formed on the backing body.

    摘要翻译: 公开了一种用于产生具有贝塞尔或高斯分布中的远场波前幅度图案的声波的换能器装置和方法。 换能器包括其中形成均匀极化的偶极子的压电元件。 具有与压电元件相同的压电常数的未涂覆的背衬主体接触并附接到压电元件。 形成为形成预定功能的光束振幅分布的压痕形成在背衬体上。