凸面-锥面声透镜换能器研究  

Study on the Transducor with Convex-cone Lens

作　　者：何家忠[1] 张福成[2] 

机构地区：[1]韶关学院物理系,广东韶关512005 [2]陕西师范大学应用声学研究所,西安710062

出　　处：《电声技术》2002年第7期45-46,共2页Audio Engineering

摘　　要：通过数值计算和实际测量,研究并证实了凸面-锥面声透镜聚焦换能器产生的声场,能产生较细长的聚焦声束,并且透镜的形状参数对聚焦声场分布有明显影响。Sound fields generated by transducers with convex-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 convex-cone lens,and sound field characteristics are greatly affected by shape parameters of the curved surface.

关 键 词：凸面 锥面 声透镜 换能器 医用超声诊断仪 

分 类 号：TH776[机械工程—仪器科学与技术]