JPS643120B2 - - Google Patents

Info

Publication number
JPS643120B2
JPS643120B2 JP4494783A JP4494783A JPS643120B2 JP S643120 B2 JPS643120 B2 JP S643120B2 JP 4494783 A JP4494783 A JP 4494783A JP 4494783 A JP4494783 A JP 4494783A JP S643120 B2 JPS643120 B2 JP S643120B2
Authority
JP
Japan
Prior art keywords
density
thermally expandable
composite material
matching layer
hollow spheres
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
JP4494783A
Other languages
English (en)
Japanese (ja)
Other versions
JPS59171296A (ja
Inventor
Masayuki Tone
Tsutomu Yano
Takayoshi Saito
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP4494783A priority Critical patent/JPS59171296A/ja
Priority to EP84301823A priority patent/EP0119855B2/en
Priority to DE8484301823T priority patent/DE3478357D1/de
Priority to US06/590,465 priority patent/US4523122A/en
Publication of JPS59171296A publication Critical patent/JPS59171296A/ja
Publication of JPS643120B2 publication Critical patent/JPS643120B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/02—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
JP4494783A 1983-03-17 1983-03-17 超音波トランスジユ−サ Granted JPS59171296A (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP4494783A JPS59171296A (ja) 1983-03-17 1983-03-17 超音波トランスジユ−サ
EP84301823A EP0119855B2 (en) 1983-03-17 1984-03-16 Ultrasonic transducers having improved acoustic impedance matching layers
DE8484301823T DE3478357D1 (en) 1983-03-17 1984-03-16 Ultrasonic transducers having improved acoustic impedance matching layers
US06/590,465 US4523122A (en) 1983-03-17 1984-03-16 Piezoelectric ultrasonic transducers having acoustic impedance-matching layers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4494783A JPS59171296A (ja) 1983-03-17 1983-03-17 超音波トランスジユ−サ

Publications (2)

Publication Number Publication Date
JPS59171296A JPS59171296A (ja) 1984-09-27
JPS643120B2 true JPS643120B2 (cs) 1989-01-19

Family

ID=12705674

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4494783A Granted JPS59171296A (ja) 1983-03-17 1983-03-17 超音波トランスジユ−サ

Country Status (1)

Country Link
JP (1) JPS59171296A (cs)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0716280B2 (ja) * 1985-02-08 1995-02-22 松下電器産業株式会社 超音波探触子
JPS61184099A (ja) * 1985-02-08 1986-08-16 Matsushita Electric Ind Co Ltd 超音波探触子
JPS61283661A (ja) * 1985-05-20 1986-12-13 プレセイ　オ−ストラリア　プロプライアトリ　リミテツド 硬化樹脂組成物および音響トランスデユ−サ−
US7808156B2 (en) * 2006-03-02 2010-10-05 Visualsonics Inc. Ultrasonic matching layer and transducer
JP5956157B2 (ja) * 2012-01-06 2016-07-27 日本セラミック株式会社 音響整合層を用いた空中用超音波送受波器。

Also Published As

Publication number Publication date
JPS59171296A (ja) 1984-09-27

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