Title :
Design and construction of a PVDF Fresnel lens
Author :
Sleva, M.Z. ; Hunt, W.D.
Author_Institution :
Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
The design, construction, and performance of an experimental broadband polyvinylidene fluoride (PVDF) Fresnel lens are discussed. The potential application of a lens of this type in medical imaging, particularly for shallow features such as the carotid artery, is addressed. A model for the lens is proposed. A general pressure transfer function which is used to obtain theoretical on-axis and focal plane beam profiles is derived. The construction of a seven-zone, 15-mm PVDF zone plate is discussed, and experimental self-convolution results are presented
Keywords :
acoustic imaging; biomedical ultrasonics; focusing; lenses; piezoelectric transducers; polymers; ultrasonic transducers; PVDF Fresnel lens; acoustic lens; carotid artery; construction; design; disk shaped transducer; focal plane beam profiles; medical imaging; performance; polyvinylidene fluoride; pressure transfer function; self-convolution results; seven zone zone plate; Acoustic transducers; Carotid arteries; Electrodes; Etching; Focusing; Humans; Impedance; Lenses; Optical design; Transfer functions;
Conference_Titel :
Ultrasonics Symposium, 1990. Proceedings., IEEE 1990
Conference_Location :
Honolulu, HI
DOI :
10.1109/ULTSYM.1990.171479
