Title :
Differential phase contrast acoustic microscopy using tilted transducers
Author_Institution :
North American Philips Corporation, Philips Laboratories, Briarcliff Manor, USA
Abstract :
A differential phase contrast reflection acoustic microscope is reported. In this system the lens is illuminated by two beams, tilted with respect to the lens axis. This leads to two adjacent off-axis foci at the focal plane of the lens. The phase difference between the signals received from these two foci provides the image contrast. Experiments at 10MHz are described and illustrated by preliminary results.
Keywords :
acoustic microscopes; acoustic microscopy; acoustic transducers; 10 MHz; differential phase contrast reflection acoustic microscope; focal plane distribution; image contrast; lens; phase difference; ray tracing; tilted transducers;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19870355
