【摘要】 对双球面声学透镜在不同曲面形状参数条件下的声场进行数值计算 ,分析了透镜面形参数与声场分布特征的关系 ;根据在声场中尽可能长的范围内获得声束宽度较小、旁瓣水平适中的聚焦声束的要求 ,给出了双球面声透镜的优化面形参数 .更多还原

【Abstract】 The acoustic fields of the bi_sphere lens are calculated numerically for various shape parameters, the relations between the shape parameters and the acoustic field distribution characteristics are investigated, the optimum shape parameters of the lens are determined to get a narrow acoustic beam_width over a longer axial range while the side_lobe level is moderate, the theoretical results are verified experimentally.更多还原