[An axicon lens for focussing ultrasound fields].
In this paper the properties of an ultrasonic axicon lens of 10 cm diameter are Investigated. This device generates a narrow ultrasonic beam in a range of 20 cm. The beam width varies from 1.7 to 0.5 mm in the frequency range from 1.7 to 5.5 megahertz. For practical applications a water path is necessary.
Linge
H
H
Institut für Medizinische Physik und Biophysik, Universität Göttingen.
Döler
W
W
Harder
D
D
D006801:Humans; D007909:Lenses; D055095:Optics and Photonics; D019047:Phantoms, Imaging; D014463:Ultrasonography / Q000295:instrumentation*