JPS60149244U - Surface-excited ultrasonic transducer - Google Patents
Surface-excited ultrasonic transducerInfo
- Publication number
- JPS60149244U JPS60149244U JP3565384U JP3565384U JPS60149244U JP S60149244 U JPS60149244 U JP S60149244U JP 3565384 U JP3565384 U JP 3565384U JP 3565384 U JP3565384 U JP 3565384U JP S60149244 U JPS60149244 U JP S60149244U
- Authority
- JP
- Japan
- Prior art keywords
- ultrasonic transducer
- excited ultrasonic
- piezoelectric plate
- item
- utility
- 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.)
- Granted
Links
Landscapes
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図ａは圧電体板１の表面に交差指電極２． ”３
を設けた状態を示す表面図、第１図すは同断面図、第１
図Ｃは圧電体板１中の分極の様子を示す同断面図、第２
図は本考案に係る表面励振型超音波トランスジューサの
一実施例を示す断面図、第３図は本考案に係る表面励振
型超音波トランスジュー４の第２の実施例を示す断面図
である。
１０・・・圧電体板、１１．１２・・・交差指電極、２
４・・・切込み溝。 ゛、FIG. 1a shows interdigital electrodes 2 on the surface of a piezoelectric plate 1. ”3
Figure 1 is a surface view showing the state in which the
Figure C is the same cross-sectional view showing the state of polarization in the piezoelectric plate 1;
The figure is a cross-sectional view showing one embodiment of the surface-excited ultrasonic transducer according to the present invention, and FIG. 3 is a cross-sectional view showing a second embodiment of the surface-excited ultrasonic transducer 4 according to the present invention. 10... Piezoelectric body plate, 11.12... Interdigital electrode, 2
4... Cut groove.゛、
Claims (1)
体板の表面とほぼ垂直方向にバルク波を発生させる表面
励振型超音波トランスジューサにおいて、圧電体掘の厚
みｔを、この圧電体板の振動波長λに対して、ｔ＝ｎ・
入／４（ただし、ｎは整数）としたことを特徴とする表
面励振型超音波トランスジューサ。 （２）圧電体板の音響インピーダンスをＺｓ、該圧電体
板と接する部分の音響インピーダンスをんとし、ムくン
のとき、ｎを奇数としたことを特徴とする実用新案登録
請求の範囲第（１）項記載の表面励振型超音波トランス
ジューサ。 〜（３）圧電体板の音響インピーダンスを
Ｚｓ、該圧電体板と接する部分の音響インピーダンスを
んとし、ム〉ンのとき、ｎを偶数としたことを特徴とす
る実用新案登録請求の範囲第（１）項記載の表面励振型
超音波トランスジューサ。 （４）交差指電極間に切込み溝を形成したことを特徴と
する実用新案登録請求の範囲第（１）項または第（２）
項または第（３）項記載の表面励振型超音波トランスジ
ューサ。[Claims for Utility Model Registration] (1) A surface-excited ultrasonic transducer in which a pair of interdigital electrodes is provided on the surface of a piezoelectric plate and generates a bulk wave in a direction substantially perpendicular to the surface of the piezoelectric plate. The thickness t of the body cavity is expressed as t=n・with respect to the vibration wavelength λ of this piezoelectric plate.
1. A surface-excited ultrasonic transducer characterized in that it has an integer of 0/4 (where n is an integer). (2) Utility model registration claim No. 1) The surface-excited ultrasonic transducer described in item 1). (3) The scope of the utility model registration claim, characterized in that the acoustic impedance of the piezoelectric plate is Zs, the acoustic impedance of the part in contact with the piezoelectric plate is Zs, and n is an even number when The surface-excited ultrasonic transducer described in (1). (4) Utility model registration claim item (1) or (2) characterized in that a cut groove is formed between the interdigital electrodes.
The surface-excited ultrasonic transducer according to item 1 or item 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3565384U JPS60149244U (en) | 1984-03-13 | 1984-03-13 | Surface-excited ultrasonic transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3565384U JPS60149244U (en) | 1984-03-13 | 1984-03-13 | Surface-excited ultrasonic transducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60149244U true JPS60149244U (en) | 1985-10-03 |
| JPH0537533Y2 JPH0537533Y2 (en) | 1993-09-22 |
Family
ID=30540130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3565384U Granted JPS60149244U (en) | 1984-03-13 | 1984-03-13 | Surface-excited ultrasonic transducer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60149244U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5033071U (en) * | 1973-07-18 | 1975-04-10 | ||
| JPS50134350A (en) * | 1974-04-10 | 1975-10-24 |
-
1984
- 1984-03-13 JP JP3565384U patent/JPS60149244U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5033071U (en) * | 1973-07-18 | 1975-04-10 | ||
| JPS50134350A (en) * | 1974-04-10 | 1975-10-24 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0537533Y2 (en) | 1993-09-22 |
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