JPH01149017A - Acoustooptic element - Google Patents
Acoustooptic elementInfo
- Publication number
- JPH01149017A JPH01149017A JP62309123A JP30912387A JPH01149017A JP H01149017 A JPH01149017 A JP H01149017A JP 62309123 A JP62309123 A JP 62309123A JP 30912387 A JP30912387 A JP 30912387A JP H01149017 A JPH01149017 A JP H01149017A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- metallic materials
- piezoelectric element
- acousto
- metal material
- 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
- 239000007769 metal material Substances 0.000 claims abstract description 28
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims abstract description 13
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 abstract description 6
- 230000002411 adverse Effects 0.000 abstract description 2
- 230000010355 oscillation Effects 0.000 abstract 1
- 230000000644 propagated effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 238000005476 soldering Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- XJUNRGGMKUAPAP-UHFFFAOYSA-N dioxido(dioxo)molybdenum;lead(2+) Chemical compound [Pb+2].[O-][Mo]([O-])(=O)=O XJUNRGGMKUAPAP-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、超音波による光の回折すなわち音響光学効果
を利用し友音響光学素子に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an acousto-optic device that utilizes the diffraction of light caused by ultrasonic waves, that is, the acousto-optic effect.
従来の技術
音響光学素子の基本溝或は、二酸化テＩＶ ｉＬ／（Ｔ
ｅＯｘ＞やモリブデン酸鉛（ＰｂＭｏＯａ ）などの単
結晶またはガラスからなる音響光学媒体に圧電素子を装
着したものである。この音響光学素子の動作原理を第４
図に基づき説明する。第４図において、音響光学媒体２
１の一端面に取付けられｔ超音波トランスジューサであ
る圧電素子２２に高周波発振器囚よｐ高周波信号を印加
すると、圧電素子２２によって音響光学媒体２１の内部
に超音波２４が発生し、屈折率の疎密によって回折格子
が形成される。このとき、音響光学媒体２１にレーザな
どの光２５を一定の角度（プフッグ角）で入射すると、
光は回折される。The basic groove of the conventional acousto-optic element or TIV iL/(T
A piezoelectric element is attached to an acousto-optic medium made of a single crystal such as eOx> or lead molybdate (PbMoOa) or glass. The operating principle of this acousto-optic element is explained in the fourth section.
This will be explained based on the diagram. In FIG. 4, the acousto-optic medium 2
When a high frequency signal is applied from a high frequency oscillator to a piezoelectric element 22 which is attached to one end surface of the ultrasonic transducer 1, an ultrasonic wave 24 is generated inside the acousto-optic medium 21 by the piezoelectric element 22, and the density of the refractive index is changed. A diffraction grating is formed by At this time, when light 25 such as a laser is incident on the acousto-optic medium 21 at a certain angle (Pfugg angle),
Light is diffracted.
ところで、超音波の周波数により回折角が定まり、また
超音波の強度にＬシ回折光の強度が定まるため、これら
を利用することによって光の変調を行うことができる。Incidentally, since the diffraction angle is determined by the frequency of the ultrasonic wave, and the intensity of the L-diffracted light is determined by the intensity of the ultrasonic wave, light can be modulated by utilizing these factors.
ここで、従来の音響光学素子を第３図に基づき説明する
。第３図において、１１は音響光学媒体で、その一端面
１１ａには超音波発生用の圧電素子戎が取付けられてい
る。そして、この圧電素子νの取付側とは反対側の背面
には、所定形状の信号印加側電極１３が設けられるとと
もに、この電極１３の表面中央にはリード線１４が直接
に半田付けにより取付けられてい友。なお、１５はアー
ス側電極、１６は七のリード線である。Here, a conventional acousto-optic element will be explained based on FIG. 3. In FIG. 3, 11 is an acousto-optic medium, and a piezoelectric element for generating ultrasonic waves is attached to one end surface 11a of the medium. A signal application side electrode 13 having a predetermined shape is provided on the back surface of the piezoelectric element ν opposite to the mounting side, and a lead wire 14 is directly attached to the center of the surface of this electrode 13 by soldering. Good friend. Note that 15 is a ground side electrode, and 16 is a seventh lead wire.
発明が解決しようとする問題点
上記従来の構成によると、リード線１４が信号印加側電
極１３に半田付けにより直接取付けられるため、この部
分が熱などにニジ変形して超音波の発生に悪影響を及ぼ
すという問題があった。また、超音波の伝搬範囲すなわ
ち発生範囲を変更したい場合、１ｇ！極全体を交換しな
ければならず、その交換作業が面倒であるという問題が
あっｔ０問題点を解決するための手段
上記問題点を解決するｔめ、本発明の音響光学素子は、
音響光学媒体の一端面に圧電素子を取付け、この圧電素
子の取付面とは反対側の背面に所定形状の電極を設け、
この電極表面の周縁部に錫および鉛を主成分とする金属
材料を設けるとともに、この金属材料にリード線を接続
したものである。Problems to be Solved by the Invention According to the above-mentioned conventional configuration, the lead wire 14 is directly attached to the signal application side electrode 13 by soldering, so this part may be deformed due to heat etc., which adversely affects the generation of ultrasonic waves. There was a problem with the impact. Also, if you want to change the propagation range of ultrasonic waves, that is, the generation range, 1g! There is a problem that the entire pole must be replaced and the replacement work is troublesome.Means for Solving the ProblemTo solve the above problem, the acousto-optic element of the present invention has the following:
A piezoelectric element is attached to one end surface of the acousto-optic medium, and an electrode of a predetermined shape is provided on the back surface opposite to the mounting surface of the piezoelectric element.
A metal material containing tin and lead as main components is provided on the peripheral edge of the electrode surface, and a lead wire is connected to this metal material.
作用
上記構成によると、圧電素子の背面電極の表面周縁部に
設けられた金属材料により、この部分での振動が抑圧さ
れ、金属材料のない中央部から−様な強度の超音波を音
響光学媒中に伝搬させることができるとともに、この金
属材料の大きさを変更するだけで、容易に超音波発生範
囲を変えることができる。まｔ、リード線も金属材料に
接続されているため、接続作業が容易となる。Effects According to the above configuration, the metal material provided on the surface periphery of the back electrode of the piezoelectric element suppresses vibrations in this area, and the ultrasonic waves with similar intensity are transmitted from the central part where there is no metal material to the acousto-optic medium. In addition to being able to propagate the ultrasonic waves inside, the range of ultrasonic wave generation can be easily changed by simply changing the size of this metal material. Furthermore, since the lead wires are also connected to the metal material, the connection work is facilitated.
実施例
以下、本発明の一実施例を第１図および第２図に基づき
説明する。EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 and 2.
第１図および第２図において、１は音響光学媒体で、そ
の一端面１ａＫは圧電素子２が導電性接着剤を介して接
着され、またこの接着面とは反対側の背面には所定形状
（所定大きさ）の信号印加側電極（以下、単に電極とい
う）３が設けられている。そして、この電極３０表面の
周縁部（本実施例においては、上縁部および下縁部）に
は、錫および鉛を主成分とする金属材料４が設けられて
いる。金属材料４は、例えば電極３の超音波の伝搬１に
必要な部分すなわち超音波発生域をマスクで覆い、伐っ
た部分を半田付けすることにより設けられる。なお、圧
電素子２に取付けられる電極３の形状すなわち大きさは
、最大限に必要な電極寸法よシ大きくされている。そし
て、上記金属材料４にリード線５が接続されている。な
お、６は音響光学媒体１の一端面１ａの側方部に設けら
れたアース側電極、７はそのリード線である。1 and 2, 1 is an acousto-optic medium, one end surface 1aK of which is bonded with a piezoelectric element 2 via a conductive adhesive, and a back surface opposite to this bonded surface has a predetermined shape ( A signal application side electrode (hereinafter simply referred to as an electrode) 3 having a predetermined size is provided. A metal material 4 whose main components are tin and lead is provided at the peripheral edge portion (in this embodiment, the upper edge portion and the lower edge portion) of the surface of the electrode 30. The metal material 4 is provided, for example, by covering a portion of the electrode 3 necessary for propagation 1 of ultrasonic waves, that is, an ultrasonic generation region, with a mask, and soldering the cut portions. Note that the shape or size of the electrode 3 attached to the piezoelectric element 2 is made larger than the maximum required electrode dimension. A lead wire 5 is connected to the metal material 4. Note that 6 is a ground electrode provided on the side of one end surface 1a of the acousto-optic medium 1, and 7 is a lead wire thereof.
上記構成において、画電極３．６の間に高周波信号を印
加すると、金属材料４で覆われている部分での振動は抑
圧されるが償われていない中央部から−様な強さの超音
波が発生し、音響光学媒体１の内部を伝搬して回折格子
が形成される。In the above configuration, when a high frequency signal is applied between the picture electrodes 3.6, the vibrations in the part covered with the metal material 4 are suppressed, but an ultrasonic wave of -like strength comes from the uncompensated central part. is generated, propagates inside the acousto-optic medium 1, and forms a diffraction grating.
ところで、このように金属材料４が覆われている部分で
は振動が抑圧されるｔめ、金属材料４の大きさすなわち
面積を増減することによって、容易に超音波発生範囲を
調節することができる。ま几、信号印加側′ＩＩｔＷ３
の周縁部に金属材料４を設けるとともにこの金属材料４
にリード線５を接続したので、従来のようにリード線を
直接電極に接続する必要がない。By the way, since vibrations are suppressed in the portion covered with the metal material 4 in this way, the ultrasonic generation range can be easily adjusted by increasing or decreasing the size, that is, the area of the metal material 4. Signal application side 'IItW3
A metal material 4 is provided on the peripheral edge of the metal material 4.
Since the lead wire 5 is connected to the electrode, there is no need to connect the lead wire directly to the electrode as in the conventional case.
発明の効果
上記本発明の構成によると、電極表面の周縁部に錫およ
び鉛を主成分とする金属材料を設けるとともに、この金
属材料にリード線を接続したので、従来のようにリード
線を直接電極の超音波発生に有効な部分に接続する必要
がないため、超音波の発生に悪影響を及ぼすことがなく
、また金属材料の大きさを変更するだけで、ＩＩ極の超
音波発生範囲を容易に変えることができる。Effects of the Invention According to the configuration of the present invention described above, a metal material containing tin and lead as main components is provided at the periphery of the electrode surface, and a lead wire is connected to this metal material. Since there is no need to connect to the part of the electrode that is effective for ultrasonic generation, there is no negative effect on ultrasonic generation, and the ultrasonic generation range of the II pole can be easily changed by simply changing the size of the metal material. can be changed to
第１図は本発明の一実施例における音響光学素子の概略
斜視図、第２図は同音響光学素子の側面図、第３図は従
来例における音響光学素子の概略斜視図、第４図は音響
光学素子の動作原理を説明する図である。
１・・・音響光学媒体、１ａ・・・一端面、２・・・圧
電素子、３・・・信号印加側電極、４・・・金属材料、
５・・・リード線。
代理人 森 木 義 弘第１図
１ト一端面
２・・五電索テ
３・−・ｉＨ号＃ｐ １０測電極
４・・壜属村料
ｊ−・リーＦ”去鍵
第２図
第３図
第４図FIG. 1 is a schematic perspective view of an acousto-optic device according to an embodiment of the present invention, FIG. 2 is a side view of the same acousto-optic device, FIG. 3 is a schematic perspective view of a conventional acousto-optic device, and FIG. FIG. 2 is a diagram illustrating the operating principle of an acousto-optic element. DESCRIPTION OF SYMBOLS 1... Acousto-optic medium, 1a... One end surface, 2... Piezoelectric element, 3... Signal application side electrode, 4... Metal material,
5... Lead wire. Agent Yoshihiro Moriki Figure 1 1 To 1 End 2... Five electric cables 3 - iH #p 10 Measuring electrodes 4... Container village charges J- Lee F" left key Figure 2 Figure 3 Figure 4
Claims (1)
電素子の取付面とは反対側の背面に所定形状の電極を設
け、この電極表面の周縁部に錫および鉛を主成分とする
金属材料を設けるとともに、この金属材料にリード線を
接続した音響光学素子。1. A piezoelectric element is attached to one end surface of the acousto-optic medium, an electrode of a predetermined shape is provided on the back surface opposite to the mounting surface of the piezoelectric element, and a metal mainly containing tin and lead is attached to the periphery of the electrode surface. An acousto-optic element that has a metal material and a lead wire connected to the metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62309123A JPH01149017A (en) | 1987-12-07 | 1987-12-07 | Acoustooptic element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62309123A JPH01149017A (en) | 1987-12-07 | 1987-12-07 | Acoustooptic element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01149017A true JPH01149017A (en) | 1989-06-12 |
Family
ID=17989166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62309123A Pending JPH01149017A (en) | 1987-12-07 | 1987-12-07 | Acoustooptic element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01149017A (en) |
-
1987
- 1987-12-07 JP JP62309123A patent/JPH01149017A/en active Pending
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