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科学通报  2011 

基于声透镜的三维同时光声层析成像技术

DOI: 10.1360/972010-1704, PP. 1887-1890

Keywords: 同时光声层析成像,时间分辨技术,声透镜

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Abstract:

提出了一种能实现连续分布物体的三维同时光声层析成像的新方法,利用一个具有二维并行成像能力而且具有较大焦深的声透镜,把一个三维物体并行成像在声透镜的像面上.由于声透镜具有较大焦深,可以把不同物面的光声信号准确成像在同一像面.根据成像系统的正弦定理,同一物面所产生的光声信号同时到达像面,而不同物面所产生的光声信号需要不同的时间到达同一像面,由于光速远大于声速,因此可以利用时间分辨技术实现三维物体的同时光声层析成像.实验结果表明,该成像系统可以同时获得三维物体的不同层面的层析图像.

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