High Frequency Single Crystal Ultrasonic Transducers for High Resolution Ophthalmic Imaging Applications
Journal Title: Ophthalmology and Vision Science - Year 2017, Vol 1, Issue 4
Abstract
As one of the most important and well established tools, ultrasound imaging provides noninvasive valuable diagnostic information, especially in the form of cross-sectional images of soft tissues. In this work, we report the design, fabrication, and characterization of press-focused LiNbO3 transducer. The performance of these transducers is in good agreement with the simulation results. Large bandwidth (92%) and high center frequency (75 MHz) are obtained. The lateral resolution and axial resolution are 110 µm and 13.09 µm respectively. The high resolution imaging capability of the transducer is demonstrated by scanning a pig eyes. The fine structures of pig eye are discernible with these ultrahigh frequency transducers.
Authors and Affiliations
Qifa Zhou, Xingui Tang, Tianfu Zhang, Ruimin Chen, Zhiqiang Zhang, Kirk Shung K
Keywords
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