Title:
超音波変換器及びこの超音波変換器を製造する方法
Document Type and Number:
Japanese Patent JP2004519146
Kind Code:
A
Abstract:
A method of manufacturing an ultrasound transducer (60), which includes forming a plate into a hollow spherical cap by deformation, wherein the plate is initially in the form of a disc of a composite piezoelectric material. The step of forming is preceded by at least one slit (70) into the plate, wherein the at least one slit has a radial orientation and extends from the peripheral edge (72) of the disc (20) towards its center (C). After the step of forming, two facing, oppositely situated free edges (74, 76) which bound the slit (70) are substantially in contact with one another so as to minimize internal stresses in the cap caused by the deformation. A transducer obtained by such a method is also disclosed.
Inventors:
Gauchet Maurice Gee
Application Number:
JP2002563466A
Publication Date:
June 24, 2004
Filing Date:
January 31, 2002
Export Citation:
Assignee:
Koninklijke Philips Electronics N.V.
International Classes:
G01N29/24; A61B8/00; A61B8/08; A61F7/00; B06B1/06; G10K11/32; H04R17/00; H04R31/00; A61N7/02; (IPC1-7): H04R31/00; A61B8/00; G01N29/24; H04R17/00
Attorney, Agent or Firm:
Susumu Tsugaru
Akihiko Miyazaki
Hiroyoshi Aoki
Akihiko Miyazaki
Hiroyoshi Aoki