Title:
ACOUSTIC MATCHING DEVICE AND ACOUSTIC PROBE SYSTEM USING SAME
Document Type and Number:
WIPO Patent Application WO/2019/234969
Kind Code:
A1
Abstract:
Provided is an acoustic matching device with which it is possible to obtain a broadband acoustic matching characteristic between a wide range of different types of materials having various specific acoustic impedances. An acoustic matching device 1 is constituted by a first film structure portion 2, a second film structure portion 4, and a wall structure portion 3 that supports the first and second film structure portions 2, 4, wherein the first film structure portion 2 is joined to a first acoustic medium 5, and the second film structure portion 4 is joined to a second acoustic medium 6 having a specific acoustic impedance different from that of the first acoustic medium 5. A contact area between the film structure portions 2, 4 and the wall structure portion 3 is adjusted such that the ratio between the specific acoustic impedance of a material constituting the acoustic matching device 1 and the contact area between the film structure portions 2, 4 and the wall structure portion 3 matches the specific acoustic impedance of the acoustic media 5, 6.
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Inventors:
TANAKA HIROKI (JP)
Application Number:
PCT/JP2019/003272
Publication Date:
December 12, 2019
Filing Date:
January 31, 2019
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
H04R1/00; H04R17/00
Foreign References:
| JPH04273698A | 1992-09-29 | |||
| JP2012129595A | 2012-07-05 |
Attorney, Agent or Firm:
TSUTSUI & ASSOCIATES (JP)
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