Multi-Focal Point Transducer for High- Frequency Ultrasound Applications Apparatus and Method for Manufacturing thereof

摘要

An objective of the present invention is to provide a multi-focal ultrasound transducer capable of extending a depth of field without applying an array transducer or performing a separate depthwise scanning. The multi-focal ultrasound transducer according to one embodiment of the present invention generates ultrasound waves using an ultrasound generation film, wherein the ultrasound generation film includes a first area which is a portion of a sphere having a first radius and has a circular projection shape, and a second area which is continuous with the first area and has a ring shape as a portion of a sphere having a second radius different from the first radius. The focal point of the second area is positioned on a focal line which is an extension line of the focal point of the first area from the center of the first area, and the ultrasound generation film may be formed of one continuous film.