JPS59115607A - Glass delay line - Google Patents
Glass delay lineInfo
- Publication number
- JPS59115607A JPS59115607A JP22559182A JP22559182A JPS59115607A JP S59115607 A JPS59115607 A JP S59115607A JP 22559182 A JP22559182 A JP 22559182A JP 22559182 A JP22559182 A JP 22559182A JP S59115607 A JPS59115607 A JP S59115607A
- Authority
- JP
- Japan
- Prior art keywords
- input
- output
- glass delay
- glass
- delay line
- 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.)
- Pending
Links
- 239000011521 glass Substances 0.000 title claims abstract description 35
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/30—Time-delay networks
- H03H9/36—Time-delay networks with non-adjustable delay time
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
Description
【発明の詳細な説明】
（発明の技術分野）
本発明は、超音波遅延線としてのガラス遅延線に関する
。TECHNICAL FIELD OF THE INVENTION The present invention relates to a glass delay line as an ultrasonic delay line.
（発明の技術的背景）
従来のガラス遅延線は、第１図に示すように、ガラス遅
延素子１の両側傾斜端面から成る入・出力面１ａ及びｌ
ｂに、入・出カドランスジューサ２及び３が単に取り付
けられているだけである。(Technical background of the invention) As shown in FIG.
Input/output transducers 2 and 3 are simply attached to b.
このようなガラス遅延線位、近年、小型化さｎて超音波
の反射回数が多くなる傾向にあるため、小さなトランス
ジューサを用いる必要がある。例えば、音速が１６００
ｍ／ｓｅｃ前後のガラスにて遅延時間がＩＨ，中心周波
数が３．５８ ＭＩ′ｌｚのガラス遅延素子を作成する
と、５ｗｔＷ１程度の長さ寸法を有するトランスジュー
サを用いる必要がある。In recent years, glass delay lines have become smaller and the number of reflections of ultrasonic waves tends to increase, so it is necessary to use a small transducer. For example, the speed of sound is 1600
If a glass delay element with a delay time of IH and a center frequency of 3.58 MI'lz is manufactured using glass around m/sec, it is necessary to use a transducer having a length of about 5wtW1.
（背景技術の問題点）
しかし、ガラス遅延線において、トランスジューサが小
さくなると、その分だけ指向性が低下し、アザ−スプリ
アスが増大してしまう。即ち、上述の５ｎ程度のトラン
スジー−サを有するガラス遅延線に、２．５８ ＭＨｚ
の正弦波全バースト状に変訴した信号を加え、その応答
を調べると、第２図に示すように、正規信号出力ａの外
に、−２２ｄＢと一３４ｄＢとにそれぞ扛減衰さ牡ただ
けのスプリアスｂとＣとが生じてしまう。(Problems with the Background Art) However, in a glass delay line, when the transducer becomes smaller, the directivity decreases accordingly, and the other spurious increases. That is, a 2.58 MHz
When a modified signal is added to the full burst of sine wave and its response is examined, as shown in Figure 2, in addition to the normal signal output a, there are attenuations of -22 dB and -34 dB, respectively. Spurious signals b and C are generated.
通常、映像機器においてｉｌｌニー３０ｄＢ前後のスプ
リアス減衰量が要求さ扛るので、上記ガラス遅延１ｗ合
そのまま映像機器に組み込んだ場合にはスプリアスｂが
画面上に縦じまとなって現わ扛てしまう。Normally, video equipment requires a spurious attenuation amount of about 30 dB, so if the glass delay 1w is directly incorporated into the video equipment, the spurious b will appear as vertical stripes on the screen.
（発明の目的）
本発明の目的は、スプリアス減衰量の大きなガラス遅延
Ｈ全提供することにある。(Object of the Invention) An object of the present invention is to provide a glass delay H with a large amount of spurious attenuation.
（発明の概黴）
本発明は、ガラス遅延素子の入・出力面に、入・出力ト
ランスジー−サのそ扛ぞｎの一方の端面に沿ってその厚
さ方向に延びる切り込みを設け、こｎにより入・出力ト
ランスジー−サの長さ寸法全実質的に大きくしたことを
特徴とする。(Summary of the Invention) The present invention provides an input/output surface of a glass delay element with a notch extending in the thickness direction along one end surface of the input/output transformer. The present invention is characterized in that the entire length dimension of the input/output transformer is substantially increased by n.
（発明の実施例）
以下、本発明の実施例を図面を参照して説明するＯ
本発明に係るガラス遅延線は、第３図に示すように、ガ
ラス遅延素子ｌと、この素子の両側の傾斜端面から成る
入・出力面１ａ及びｌｂにそ扛ぞ扛取り付けらｎている
０人カトランスジー−サ２と出力トランスジー−サ３と
を備える。ガラス遅延素子１の両面には、入力トランス
ジー−サ２により超音波撮動に変換さ７ｔて出力さｊＬ
る超音波信号の通路に沿って、信号のビーム広がｖを規
制するためのスプリアス吸収体８が設けら牡ている。(Embodiments of the Invention) Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 3, the glass delay line according to the present invention includes a glass delay element l and A zero-person transformer 2 and an output transformer 3 are installed on the input/output surfaces 1a and 1b, which are sloped end surfaces. On both sides of the glass delay element 1, there is a signal 7t which is converted into ultrasonic imaging by the input transducer 2 and outputted.
A spurious absorber 8 is provided along the path of the ultrasonic signal to regulate the beam spread v of the signal.
ガラス遅延素子ｌの入・出方面ｌａ及び１ｂには、入・
出カドランスジューサ２及び３の各一方の端面に沿って
その厚さ方向に延びる切り込み４がそ扛ぞ扛設けら扛て
いる。The input and output sides la and 1b of the glass delay element l have input and output sides la and 1b.
A notch 4 extending in the thickness direction is provided along one end surface of each of the output juicers 2 and 3.
ところで、第４図は、第１図の従来のガラス遅［ｊｉｎ
正規正規４遥
図中、５は正規信号通路、６及び７はそれぞ几スプリア
スｂ及びＣの通路を示している。この第４図中のスゲリ
アスｂの通路６を拡大して示すと、第５図の実線で示す
通路となり、入力トランスジー−サ２により生じたスゲ
リアスｂはこの通路全通り、出カドランスジューサ３に
到達する。By the way, FIG. 4 shows the conventional glass slow-moving glass shown in FIG.
In the diagram, 5 indicates a normal signal path, and 6 and 7 indicate paths for spurious signals b and C, respectively. If the path 6 of the sugelius b in FIG. 4 is enlarged, it becomes the path shown by the solid line in FIG. reach.
さて、本発明のガラス遅延線においては、入・出力面１
ａとｌｂに、第５図に示すように、切り込み４、４が設
けら扛ているので、鏡像の原理により人・出カドランス
ジー−１２と３の実効長が切り込み４の幅分たけ大きく
なる。この結果、スプリアスｂの通路は第５図の破線で
示す通路となる０
次に、本発明ガラス遅延線において、入・出方面１ａｓ
ｌｂに２ｎ幅の切り込み４を設け、入・出力トランスジ
ー−サ２と３の実効長を７ｍにして、入力トランスジー
−サ２に、２． ５ ８ ＭＨｚの正弦波をバースト状
に変鯛した信号を加え、その応答音調べた。この応答結
果を第６図に示す。この第６図から明らかなように、正
規信号出方ａ′とスプリアスＣ′とは従来と殆んど変わ
らず、切り込み４の彫響奴全くなかった。しかるに、ス
プリアスｂ′は減衰貴び６ｄＢ大きくなり、−２８ｄＢ
の減衰量を示し７た。従って、本発明のガラス遅グ！Ｊ
ｉ！ｔ：映像機器に組み込んでも画面上に縦じまが現ゎ
扛ることかない。Now, in the glass delay line of the present invention, the input/output surface 1
Since notches 4 and 4 are provided in a and lb as shown in FIG. 5, the effective length of the output gears 12 and 3 is increased by the width of the notch 4 due to the principle of mirror image. As a result, the path of the spurious b becomes the path shown by the broken line in FIG.
A notch 4 with a width of 2n is provided in the input transducer 2, and the effective length of the input/output transformers 2 and 3 is set to 7 m. A burst signal of a 58 MHz sine wave was added, and the response sound was investigated. The response results are shown in FIG. As is clear from FIG. 6, the normal signal output a' and the spurious C' are almost the same as in the conventional case, and there is no burr in the notch 4 at all. However, the spurious b' increases by 6 dB and becomes -28 dB.
It shows the amount of attenuation7. Therefore, the glass retarder of the present invention! J
i! t: Even when installed in video equipment, vertical stripes do not appear on the screen.
（発明の効果）
本発明によ２’Ｌは、ガラス遅ＩＡ素子の入・出方面に
、入・出力トランスジーーサの各一方の端面に沿ってそ
の厚さ方向に延びる切シ込みを設けたことで、入・出カ
ド２ンスジューサの実効長を切シ込みの幅分だけ大きく
シ、と牡らの指向性を向上させることができる。従って
、スプリアスの小さなガラス遅延線を提供することがで
きる。(Effects of the Invention) According to the present invention, 2'L is provided with notches extending in the thickness direction along one end face of each of the input and output transformers on the input and output sides of the glass slow IA element. As a result, the effective length of the input and output two juicers can be increased by the width of the cutting depth, and the directivity of the cut can be improved. Therefore, a glass delay line with small spurious signals can be provided.
第１図は従来のガラス遅延線の正面図、第２図は第１因
のガラス遅延線の応答出力を示す図、第３図は本発明に
係るガラス遅ＩＡ線の正面図、第４図は第１図のガラス
遅延線の正規信号通路に沿った展開図、第５図位スプリ
アス通路を示す図、第６図は第３図のガラス遅ｌＪＥ腺
の応答出力を示す図である。
ｌ・・・・・・・・・・・ガラス遅延素子ｌａ・・・・
・・・・・入力面
１ｂ・・ゆ・・・・・・出方面
２、３φ・・・０・・トランスシー−ザ６、７・−・−
・・拳スプリアス通路
代理人弁理士 山 トロ 明 信
第１図
Ｓ
第３図
第２図
第６図FIG. 1 is a front view of a conventional glass delay line, FIG. 2 is a diagram showing the response output of the glass delay line due to the first factor, FIG. 3 is a front view of the glass slow IA line according to the present invention, and FIG. 1 is a developed view of the glass delay line along the normal signal path, FIG. 5 is a diagram showing the spurious path, and FIG. 6 is a diagram showing the response output of the glass delay line of FIG. 3. l......Glass delay element la...
...Input surface 1b...Yu...Output surface 2, 3φ...0...Transceaser 6, 7...-
...Fist Spurious Passage Agent Patent Attorney Aki Shin Yama Toro Figure 1 S Figure 3 Figure 2 Figure 6
Claims (1)
カドランスジューサがそ扛ぞ扛取り付けら扛ているガラ
ス遅延線であって、前記人中出力面に、前記入・出力ト
ランスジー−サのそ扛ぞ扛の一方の端面に沿ってその厚
さ方向に延びる切り込みを設けたことを特徴とするガラ
ス遅延線。A glass delay line is provided with an input/output transducer mounted on the input/output face consisting of an inclined end face of a glass delay element, and the input/output transducer is attached to the input/output transducer on the input/output face. A glass delay line characterized by having a notch extending in the thickness direction along one end face of the glass delay line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22559182A JPS59115607A (en) | 1982-12-22 | 1982-12-22 | Glass delay line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22559182A JPS59115607A (en) | 1982-12-22 | 1982-12-22 | Glass delay line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59115607A true JPS59115607A (en) | 1984-07-04 |
Family
ID=16831713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22559182A Pending JPS59115607A (en) | 1982-12-22 | 1982-12-22 | Glass delay line |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59115607A (en) |
-
1982
- 1982-12-22 JP JP22559182A patent/JPS59115607A/en active Pending
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