用环状阵列式透镜板实现平顶声压

能量均匀分布的平顶声场在提高超声成像质量和超声生物学效应的探究中具有良好的应用前景,但目前声透镜的声场分布调控研究主要集中于聚焦超声和波束转向,缺乏实现平顶声压的透镜设计,文章以基于惠更斯原理的瑞利积分法为基础,结合模拟退火粒子群算法,提出一种环状阵列式的透镜设计,通过仿真在输出面特定区域内获得了平顶声压分布,表明了设计的有效性。

The flat-top sound field with uniform energy distribution has a good application prospect in improving ultrasound imaging quality and exploring ultrasound biological effects.However,acoustic lenses'current sound field distribution control mainly focuses on focused ultrasound and beam steering.There is a lack of lens design to achieve flat-top sound pressure.Based on the Rayleigh integration method based on Huygens'principle,this paper combines the simulated annealing particle swarm algorithm to propose a ring array lens design.The flat top's sound pressure distribution is obtained in a specific area of the output surface through simulation,which shows its effectiveness.