JPH0734402Y2 - Light source module - Google Patents
Light source moduleInfo
- Publication number
- JPH0734402Y2 JPH0734402Y2 JP1666190U JP1666190U JPH0734402Y2 JP H0734402 Y2 JPH0734402 Y2 JP H0734402Y2 JP 1666190 U JP1666190 U JP 1666190U JP 1666190 U JP1666190 U JP 1666190U JP H0734402 Y2 JPH0734402 Y2 JP H0734402Y2
- Authority
- JP
- Japan
- Prior art keywords
- light source
- support base
- fiber
- bonding material
- fiber support
- 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 - Fee Related
Links
Description
【考案の詳細な説明】 「産業上の利用分野」 この考案は光ファイバジャイロ、光通信で用いる光源モ
ジュールに関し、特に調芯固定技術の改良に係わる。DETAILED DESCRIPTION OF THE INVENTION "Industrial Application Field" The present invention relates to a light source module used in an optical fiber gyro and optical communication, and particularly to improvement of alignment fixing technology.
「従来の技術」 従来の光源モジュールを第４図、第５図を参照して説明
する。金属より成り、上面が開放された箱形の本体1aと
その上面を閉塞する板状の上蓋1bとによりパッケージ１
が構成され、本体1a内の底面に金属製でＬ字型の光源支
持台２が取付けられる。光源支持台２の上面及び前面は
それぞれ水平面及び垂直面とされ、その上面の前端縁に
レーザダイオードなどの半導体光源３がその出射面を前
方に向け、その光軸を光源支持台の前面と直交する方向
に向けて固定される。“Prior Art” A conventional light source module will be described with reference to FIGS. 4 and 5. The package 1 includes a box-shaped main body 1a made of metal and having an open upper surface, and a plate-like upper lid 1b closing the upper surface.
The L-shaped light source support 2 made of metal is attached to the bottom surface of the main body 1a. The upper surface and the front surface of the light source support base 2 are a horizontal surface and a vertical surface, respectively, and a semiconductor light source 3 such as a laser diode has its emission surface directed forward at the front edge of the upper surface, and its optical axis is orthogonal to the front surface of the light source support base. It is fixed in the direction of
金属より成り、前面が垂直面とされたほぼ直方体状のフ
ァイバ支持台４の上面の中央に、先球加工された光ファ
イバ（以下単に光ファイバと言う）がその先端を支持台
の前面側に配され、その前面と直交する方向に延長され
て、接着剤、半田等の接合材料６で支持台４上に固定さ
れる。ファイバ支持台４にはその両側面の下端縁より突
片4a,4bが水平方向に一体に突出形成されている。光フ
ァイバ５が接合されたファイバ支持台４を直交するX,Y,
Zの３軸方向に移動可能な治具を用いて保持し、光源３
の出力光が最もよく光ファイバ５に入射するように、光
源３の光軸に対し光ファイバ５の光軸を調整した後、光
ファイバ支持台４の突片4a,4bの上面を接着剤、半田等
の接合材料7a,7bで光源支持台２の前面に接合する。な
お光ファイバ５はパッケージ本体1aに設けた孔８より外
部に導出される。At the center of the upper surface of a substantially rectangular parallelepiped-shaped fiber support base 4 made of metal, the front surface of which is a vertical surface, an optical fiber having a spherical surface (hereinafter simply referred to as an optical fiber) has its tip on the front surface side of the support base. They are arranged, extended in a direction orthogonal to the front surface thereof, and fixed on the support base 4 with a bonding material 6 such as an adhesive or solder. Projecting pieces 4a and 4b are integrally formed in the fiber support base 4 in a horizontal direction from lower end edges of both side surfaces thereof. The X, Y, and
Hold the light source using a jig that can move in the three Z directions.
After adjusting the optical axis of the optical fiber 5 with respect to the optical axis of the light source 3 so that the output light of the optical fiber 5 is best incident on the optical fiber 5, the upper surface of the protrusions 4a, 4b of the optical fiber support 4 is bonded with an adhesive, Bonding is performed on the front surface of the light source support base 2 with bonding materials 7a and 7b such as solder. The optical fiber 5 is led out through a hole 8 provided in the package body 1a.
なお、パッケージ１内にはサーミスタなど他の回路部品
も実装されるが、この考案と関係ないので省略してあ
る。Although other circuit components such as a thermistor are mounted in the package 1, they are omitted because they are not related to this invention.
「考案が解決しようとする課題」 光ファイバ５と光源３の調芯において許容される位置ず
れはミクロン〜サブミクロンのオーダであり、従って調
芯固定部は機械的な安定性が要求される。しかしながら
従来の光源モジュールでは、ファイバ支持台４の左右の
取付脚4a,4bを光源支持台２に接合するために、作業者
が手作業により目視しながら接合材料を塗布している
が、塗布した接合材料の外形は自由な広がりを示し、そ
の量を正確に定量することは難しく、塗布量にアンバラ
ンスが生じる。このため周囲温度変化により熱膨張に差
が生じ、調芯固定部の機械的な安定性がそこなわれ、光
源３と光ファイバ５との光軸にずれを生じ、ファイバ出
力光の温度に対する安定性が悪い難点があった。[Problems to be Solved by the Invention] The positional deviation allowed in the alignment of the optical fiber 5 and the light source 3 is on the order of micron to submicron, and therefore the alignment fixing part is required to have mechanical stability. However, in the conventional light source module, in order to join the left and right mounting legs 4a and 4b of the fiber support base 4 to the light source support base 2, the operator manually applies the bonding material, but it is applied. The outer shape of the bonding material shows a free spread, it is difficult to accurately quantify the amount, and an imbalance occurs in the coating amount. Therefore, a difference in thermal expansion occurs due to a change in ambient temperature, mechanical stability of the alignment fixing portion is impaired, and the optical axes of the light source 3 and the optical fiber 5 are deviated, and the fiber output light is stable against temperature. There was a difficulty with poor sex.
また、接合箇所の周辺部にはみ出した接合材料が光ファ
イバの先端に付着し、不良となる恐れもあった。In addition, there is a possibility that the bonding material protruding to the peripheral portion of the bonding portion may adhere to the tip of the optical fiber and become defective.
この考案の目的はこれら従来の問題点を解決して、ファ
イバ支持台を接合材料を定量し易いような構造として周
辺部にはみ出さないようにすると共に、接合材料の塗布
量の左右のアンバランスを小さくできるような構造にし
て、調芯固定部の温度に対する安定性を向上させようと
するものである。The purpose of the present invention is to solve these conventional problems, to prevent the fiber support base from protruding to the peripheral portion as a structure that facilitates quantitative determination of the bonding material, and to balance the left and right imbalances of the coating amount of the bonding material. It is intended to improve the stability of the alignment fixing portion with respect to temperature by adopting a structure capable of reducing
「課題を解決するための手段」 （１）この考案は、ケースと、光源支持台と、半導体光
源と、ファイバ支持台と、光ファイバとを具備する光源
モジュールであって、 上記光源支持台は、金属より成り、上記ケース内に固定
され、上記ファイバ支持台を接合するための垂直面を有
し、 上記半導体光源は、その光軸が上記垂直面と直交するよ
うに上記光源支持台に取付けられ、 上記ファイバ支持台は、金属より成り、一端に垂直な端
面とその端面のほぼ中央に接合材料注入穴とを有し、上
記光ファイバは、その先端を上記ファイバ支持台の上記
垂直な端面側に配され、その垂直な端面と直交する方向
に延長されて、そのファイバ支持台に接合され、 上記ファイバ支持台は，上記垂直な端面に形成された接
合材料注入穴に接合材料を所定量注入され、上記光ファ
イバと半導体光源との光軸が合うように位置調整された
後、上記光源支持台の垂直面に接合される。"Means for Solving the Problems" (1) The present invention is a light source module including a case, a light source support, a semiconductor light source, a fiber support, and an optical fiber, wherein the light source support is , Made of metal, fixed in the case, and having a vertical surface for joining the fiber support base, the semiconductor light source is mounted on the light source support base so that its optical axis is orthogonal to the vertical surface. The fiber support base is made of metal and has an end face perpendicular to one end and a bonding material injection hole substantially at the center of the end face, and the optical fiber has its tip at the vertical end face of the fiber support base. On the side, extended in a direction orthogonal to the vertical end face, and joined to the fiber support base, and the fiber support base supplies a predetermined amount of bonding material to a bonding material injection hole formed in the vertical end face. Injection Is, after the position is adjusted so that the optical axis between the optical fiber and the semiconductor light source is aligned and bonded to the light source support base of the vertical surface.
（２）上記（１）項において、上記ファイバ支持台は上
記接合材料注入穴の形成された垂直端面の周縁の角部が
切り欠かれて段部が形成されているのが望ましい。(2) In the above item (1), it is preferable that the fiber support base has a step formed by cutting out a corner portion of a peripheral edge of a vertical end surface where the bonding material injection hole is formed.
（３）上記（１）項において、上記ファイバ支持台に光
ファイバを案内するＶ溝が形成されているのが望まし
い。(3) In the above item (1), it is preferable that a V groove for guiding the optical fiber is formed on the fiber support base.
（４）上記（１）項において、上記ファイバ支持台は、
円柱状に形成されているのが望ましい。(4) In the above item (1), the fiber support base is
It is preferably formed in a cylindrical shape.
「実施例」 この考案の実施例で第１図乃至第２図を参照して説明す
る。同図では第４図及び第５図と対応する部分に同じ符
号を付し、重複説明を省略する。この考案ではファイバ
支持台４の垂直な前端面のほぼ中央に接合材料注入穴4c
が形成される。この実施例ではファイバ支持台４は円柱
体で構成される。同注入穴4cに接合材料７を注入して行
くと表面張力によって接合材料の表面は第３図に示すよ
うに球面状に盛り上がって行くので、目視によっても、
定量し易くなり、ほぼ所定の量を注入することができ
る。その後、光ファイバ５と半導体光源３との光軸が合
うように、ファイバ支持台４の位置を調整して、光源支
持台２の前面に接合する。接合材料７は注入穴4cを中心
とする半径方向に周縁近く迄薄く広げられる。[Embodiment] An embodiment of the present invention will be described with reference to FIGS. 1 and 2. In the figure, parts corresponding to those in FIGS. 4 and 5 are designated by the same reference numerals, and duplicate description will be omitted. In this invention, a bonding material injection hole 4c is formed in the center of the vertical front end surface of the fiber support base 4.
Is formed. In this embodiment, the fiber support base 4 is a cylindrical body. When the bonding material 7 is injected into the injection hole 4c, the surface of the bonding material rises in a spherical shape as shown in FIG. 3 due to surface tension.
It becomes easy to quantify, and almost a predetermined amount can be injected. After that, the position of the fiber support base 4 is adjusted so that the optical axes of the optical fiber 5 and the semiconductor light source 3 are aligned, and the fiber support base 4 is bonded to the front surface of the light source support base 2. The bonding material 7 is thinly spread to the vicinity of the peripheral edge in the radial direction centered on the injection hole 4c.
注入穴4cが形成されたファイバ支持台４の前端面の周縁
の角部が切り欠かれて段部4dが形成されるのが望まし
い。このようにすると、接合材料７がファイバ支持台の
接合面よりはみ出した場合でも、段部に付着し、周辺の
光ファイバ５などへ付着するのが防止できる。It is preferable that a corner portion of the peripheral edge of the front end surface of the fiber support base 4 in which the injection hole 4c is formed is cut out to form a step portion 4d. By doing so, even if the bonding material 7 protrudes from the bonding surface of the fiber support base, it is possible to prevent the bonding material 7 from adhering to the step and adhering to the optical fibers 5 and the like in the periphery.
ファイバ支持台４に光ファイバ５を案内するための断面
がＶ字状の溝（Ｖ溝と言う）4eを垂直な前面と直角方向
に形成するのが望ましい。その場合には、光ファイバに
曲がりぐせがあっても、溝に嵌合させることにより容易
に修正することができる。It is desirable to form a groove 4e having a V-shaped cross section (referred to as a V groove) 4e for guiding the optical fiber 5 on the fiber support base 4 in a direction perpendicular to the vertical front surface. In that case, even if the optical fiber is bent, it can be easily corrected by fitting it in the groove.
ファイバ支持台４を円柱体とすれば、断面が円形の金属
細線を切断して簡単に作ることができ、また前面の周縁
に段部を同軸心に形成することも容易に行えて都合がよ
い。If the fiber support base 4 is a cylindrical body, a thin metal wire having a circular cross section can be easily cut and formed, and it is convenient that a step portion can be formed coaxially on the peripheral edge of the front surface. .
「考案の効果」 以上述べたようにこの考案によれば、ファイバ支持台４
の前面中央に接合材料注入穴が形成され、注入された接
合材料はその穴を中心として球面上に盛り上がり、その
場所に停留させることができるので、所定量を定量する
のが容易となる。従って必要以上に多くの量を注入する
恐れがないので接合面の周辺部にはみ出すのが防止でき
る。“Effect of Device” As described above, according to this device, the fiber support 4
A bonding material injection hole is formed in the center of the front surface of the, and the injected bonding material rises on the spherical surface around the hole and can be retained at that position, so that it becomes easy to quantify a predetermined amount. Therefore, there is no fear of injecting a larger amount than necessary, so that it is possible to prevent the protrusion to the peripheral portion of the joint surface.
また接合材料は注入穴を中心にした半径方向に均一な厚
さで薄くほぼ円形に広げられ、従来のように接合材料が
場所によって量的にアンバランスになることはなく、し
かも極めて薄くできることから、接合材料の熱膨張差に
よる光ファイバの光軸のずれを防止できる。即ち、従来
の光源では−55〜＋85℃において光ファイバ出力光の光
量は10〜50％変動したが、この考案の光源では20％以下
に抑えることができ、製品の歩留りを大幅に向上でき
る。In addition, the bonding material is spread in a thin, almost circular shape with a uniform thickness in the radial direction around the injection hole, so that the bonding material does not become quantitatively unbalanced depending on the location as in the past, but it can be made extremely thin. The deviation of the optical axis of the optical fiber due to the difference in thermal expansion of the bonding material can be prevented. That is, in the conventional light source, the light amount of the optical fiber output light fluctuates by 10 to 50% at -55 to + 85 ° C, but with the light source of the present invention, it can be suppressed to 20% or less, and the product yield can be greatly improved.
ファイバ支持台４の接合面の周縁に段部4dを設けた場合
には、接合材料７が接合面よりはみ出しても、その段部
に留まり、周辺の光ファイバ５などに付着するのが防止
できる。When the step portion 4d is provided on the peripheral edge of the joining surface of the fiber support base 4, even if the joining material 7 protrudes from the joining surface, it can be prevented from remaining on the step portion and adhering to the peripheral optical fiber 5 or the like. .
ファイバ支持台４に光ファイバ５を案内するＶ溝を設け
た場合には、光ファイバ５の曲りぐせが修正され、所定
の方向に正確に接合でき、作業性が著しく向上する。When the V-groove for guiding the optical fiber 5 is provided on the fiber support 4, the bending of the optical fiber 5 is corrected, the optical fiber 5 can be accurately joined in a predetermined direction, and the workability is significantly improved.
第１図Ａ及びＢはそれぞれこの考案の実施例を示す縦断
面図及び上蓋を外した平面図、第２図は光ファイバを接
合した第１図のファイバ支持台４を示す図であり、Ａは
正面図、ＢはＡのＡ−Ａ断面図、ＣはＡのＶ溝とその周
辺の拡大図、第３図は第１図の接合材料を注入したファ
イバ支持台４の縦断面図、第４図Ａ及びＢはそれぞれ従
来の光源モジュールの縦断面図及び上蓋を外した平面
図、第５図は第４図のファイバ支持台４の正面図であ
る。1A and 1B are a longitudinal sectional view showing an embodiment of the present invention and a plan view with an upper lid removed, and FIG. 2 is a view showing the fiber support base 4 of FIG. Is a front view, B is an A-A sectional view of A, C is an enlarged view of the V groove of A and its periphery, FIG. 3 is a longitudinal sectional view of the fiber support base 4 injected with the bonding material of FIG. 4A and 4B are a longitudinal sectional view of a conventional light source module and a plan view with an upper lid removed, and FIG. 5 is a front view of the fiber support base 4 of FIG.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭63−213807（ＪＰ，Ａ) 特開 平１−239511（ＪＰ，Ａ) 特開 昭53−49975（ＪＰ，Ａ) 特開 昭60−84510（ＪＰ，Ａ) ─────────────────────────────────────────────────── --- Continuation of the front page (56) Reference JP-A-63-213807 (JP, A) JP-A-1-239511 (JP, A) JP-A 53-49975 (JP, A) JP-A-60- 84510 (JP, A)
Claims (4)
ファイバ支持台と、光ファイバとを具備する光源モジュ
ールであって、 上記光源支持台は、金属より成り、上記ケース内に固定
され、上記ファイバ支持台を接合するための垂直面を有
し、 上記半導体光源は、その光軸が上記垂直面と直交するよ
うに上記光源支持台に取付けられ、 上記ファイバ支持台は、金属より成り、一端に垂直な端
面とその端面のほぼ中央に接合材料注入穴とを有し、 上記光ファイバは、その先端を上記ファイバ支持台の上
記垂直な端面側に配され、その垂直な端面と直交する方
向に延長されて、そのファイバ支持台に接合され、 上記ファイバ支持台は、上記垂直な端面に形成された接
合材料注入穴に接合材料を所定量注入され、上記光ファ
イバと半導体光源との光軸が合うように位置調整された
後、上記光源支持台の垂直面に接合されることを特徴と
する、 光源モジュール。1. A case, a light source support, a semiconductor light source,
A light source module comprising a fiber support base and an optical fiber, wherein the light source support base is made of metal, is fixed in the case, and has a vertical surface for joining the fiber support base, The semiconductor light source is attached to the light source support so that its optical axis is orthogonal to the vertical plane, and the fiber support is made of metal and has an end face perpendicular to one end and a bonding material injection hole substantially at the center of the end face. The optical fiber has a tip disposed on the vertical end face side of the fiber support base, is extended in a direction orthogonal to the vertical end face, and is joined to the fiber support base, The support base is injected with a predetermined amount of a bonding material into a bonding material injection hole formed in the vertical end face, and after the position is adjusted so that the optical axes of the optical fiber and the semiconductor light source are aligned with each other, the light source support base is provided. Characterized in that it is joined to the vertical plane, the light source module.
台は、上記接合材料注入穴の形成された垂直端面の周縁
の角部が切り欠かれて段部が形成されていることを特徴
とする光源モジュール。2. The fiber support base according to claim 1, wherein a corner portion of a peripheral edge of a vertical end face where the bonding material injection hole is formed is cut out to form a step portion. Light source module.
ァイバ支持台に光ファイバを案内するＶ溝が形成されて
いることを特徴とする光源モジュール。3. The light source module according to claim 1, wherein a V groove for guiding an optical fiber is formed on the fiber support base.
て、上記ファイバ支持台は、円柱状に形成されているこ
とを特徴とする光源モジュール。4. The light source module according to claim 1, wherein the fiber support base is formed in a cylindrical shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1666190U JPH0734402Y2 (en) | 1990-02-21 | 1990-02-21 | Light source module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1666190U JPH0734402Y2 (en) | 1990-02-21 | 1990-02-21 | Light source module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03108205U JPH03108205U (en) | 1991-11-07 |
| JPH0734402Y2 true JPH0734402Y2 (en) | 1995-08-02 |
Family
ID=31519918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1666190U Expired - Fee Related JPH0734402Y2 (en) | 1990-02-21 | 1990-02-21 | Light source module |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0734402Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4512330B2 (en) * | 2002-07-12 | 2010-07-28 | 株式会社リコー | Composite optical element and optical transceiver |
-
1990
- 1990-02-21 JP JP1666190U patent/JPH0734402Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03108205U (en) | 1991-11-07 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |