双锥面声透镜换能器的研究  

Study on the Transducer with Bi-cone Lens

作　　者：何家忠[1] 钱盛友[2] 张福成[3] 

机构地区：[1]韶关学院物理系,韶关512005 [2]湖南师范大学物理系,长沙410081 [3]陕西师范大学应用声学研究所,西安710062

出　　处：《压电与声光》2002年第5期372-373,381,共3页Piezoelectrics & Acoustooptics

摘　　要：通过数值计算和实际测量 ,研究了双锥面透镜聚焦换能器产生的声场 ,证实其能产生较细长的聚焦声束 ,且透镜的形状参数对声场分布有明显影响。Sound fields generated by transducers with bi cone lens are studied through numerical calculations and experiments.The results indicate:a narrow sound beam over a longer axial range can be obtained by bi cone lens,and sound field characteristics are greatly affected by shape parameters of the curved surface.

关 键 词：双锥面 换能器 聚焦 透镜 声场 

分 类 号：TB552[理学—物理] O422.2[理学—声学]