JPH02220006A - laser probe - Google Patents
laser probeInfo
- Publication number
- JPH02220006A JPH02220006A JP1042367A JP4236789A JPH02220006A JP H02220006 A JPH02220006 A JP H02220006A JP 1042367 A JP1042367 A JP 1042367A JP 4236789 A JP4236789 A JP 4236789A JP H02220006 A JPH02220006 A JP H02220006A
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- lens
- protective tube
- laser probe
- tube
- 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
Landscapes
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Laser Surgery Devices (AREA)
- Radiation-Therapy Devices (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
【発明の詳細な説明】
産業上の利用分野
本発明はレーザプローブに係シ、特にその先端部の構造
に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a laser probe, and particularly to the structure of its tip.
従来の技術
従来のレーザプローブ先端部の構造を示す断面図を第３
図に示す。Conventional technology A cross-sectional view showing the structure of the tip of a conventional laser probe is shown in Figure 3.
As shown in the figure.
第３図に示すように、光ファイバー１をテフロンの保護
チューブ２に収納し、レンズ３を保持するヌテンレスの
保護管４を保護チューブ２及びテフロンの外管６と固定
しである。As shown in FIG. 3, the optical fiber 1 is housed in a Teflon protective tube 2, and a nutless protective tube 4 holding a lens 3 is fixed to the protective tube 2 and the Teflon outer tube 6.
発明が解決しようとする課題
上記の構造では光フアイバー１先端から出力されたレー
ザ光の一部がレンズ３により反射され。Problems to be Solved by the Invention In the above structure, a portion of the laser beam output from the tip of the optical fiber 1 is reflected by the lens 3.
ヌテンレスの保護管４の内壁を加熱し、温度の上昇によ
り光ファイバー１を劣化させる。The inner wall of the nutless protection tube 4 is heated, and the optical fiber 1 is deteriorated due to the temperature rise.
又、製造時に光ファイバー１とレンズ３との距離りがレ
ーザ入力による光ファイバー１の伸びより短い場合は、
レーザ入力の際、光ファイバー１が伸び、レンズ３に突
き当たる。この時、レンズ３による反射光が直接、光フ
アイバー１内に入るため、保騨管４内の温度上昇は防げ
るが、レンズ３に異物が付着した際、熱吸収が起こり、
レンズ３に接している光ファイバー１の端面が劣化する
。Also, if the distance between the optical fiber 1 and the lens 3 during manufacturing is shorter than the elongation of the optical fiber 1 due to laser input,
During laser input, the optical fiber 1 extends and hits the lens 3. At this time, the reflected light from the lens 3 directly enters the optical fiber 1, which prevents the temperature from rising inside the protective tube 4. However, when foreign matter adheres to the lens 3, heat absorption occurs.
The end face of the optical fiber 1 in contact with the lens 3 deteriorates.
又、距離りが長すぎると、レーザ光の拡り角のため、直
接レーザ光が保護管４に当り、加熱し温度の上昇により
光ファイバー１を劣化させる。Moreover, if the distance is too long, the laser beam will directly hit the protection tube 4 due to the divergence angle of the laser beam, causing heating and deterioration of the optical fiber 1 due to an increase in temperature.
このように、従来のレーザプローブはレーザ入力によっ
て変化する光ファイバー１の先端とレンズ３との距離に
よって、レーザプローブ先端が熱的な影響を受け、光フ
ァイバー１を劣化させる。As described above, in the conventional laser probe, the tip of the laser probe is thermally affected by the distance between the tip of the optical fiber 1 and the lens 3, which changes depending on the laser input, causing the optical fiber 1 to deteriorate.
しかも、光ファイバー１を固定化することは。Moreover, fixing the optical fiber 1 is difficult.
光ファイバー１に歪を与え、困難である。This is difficult because it gives distortion to the optical fiber 1.
課題を解決するための手段
上記課題を解決するため、本発明のレーザプローブは、
１／ンズを直接形状記憶合金製のコイルばね、又は、熱
伝導性の良い保護管を介して形状記憶合金製のコイルば
ねと接合し、コイルばねの伸縮によって保護チューブに
対して保護管が自由に移動できるようにするものである
。Means for Solving the Problems In order to solve the above problems, the laser probe of the present invention includes:
1/2 is directly connected to a shape memory alloy coil spring or a shape memory alloy coil spring via a heat conductive protection tube, and the protection tube is freed from the protection tube by the expansion and contraction of the coil spring. It allows you to move to.
作用
上記手段により、レンズと光ファイバ一端部の距離によ
って大きく係ってくる保護管内壁への熱的影響を利用し
て、形状記憶合金製のコイルばねを伸縮させ、し？ズを
自動的に移動させる。これによって、製造上、レンゼと
光フアイバ一端面の微妙な距離調整が必要なくなり２保
護管内部の熱影響で光ファイバーの劣化を防止すること
ができる。Effect: By using the above means, the shape memory alloy coil spring is expanded and contracted by utilizing the thermal influence on the inner wall of the protective tube, which is greatly influenced by the distance between the lens and one end of the optical fiber. automatically move the images. This eliminates the need for delicate distance adjustment between the lens and one end face of the optical fiber during manufacturing, and can prevent deterioration of the optical fiber due to the influence of heat inside the two protection tubes.
実施例 本発明による一実施例を第１図、第２図に示し。Example An embodiment according to the present invention is shown in FIGS. 1 and 2.
第３図と同一番号は同一部材を示す。第１図は、第１の
実施例のレーザプローブの先端部を示す部分断面図であ
る。The same numbers as in FIG. 3 indicate the same members. FIG. 1 is a partial sectional view showing the tip of the laser probe of the first embodiment.
第１図において、１は光ファイバーであシ、テフロン製
の保護チューブ２に収納し、レンズ３を保持する熱伝導
性の良い銅製の保護管８とテフロン製の外管６及びテフ
ロン製の保護チューブ２に固定しである金属ブロック７
との間に形状記憶合金製のＮｉ−Ｔ１のコイルばね８を
接合する。In Fig. 1, 1 is an optical fiber, housed in a protective tube 2 made of Teflon, a protective tube 8 made of copper with good thermal conductivity that holds the lens 3, an outer tube 6 made of Teflon, and a protective tube made of Teflon. Metal block 7 fixed to 2
A Ni-T1 coil spring 8 made of a shape memory alloy is joined between the two.
保護管６と保護チューブ２及び外管５は固定せず、自由
に移動できるようになっている。また、形状記憶合金製
のコイルばね８は、形状記憶処理後、逆変態開始温度を
２８３Ｋに設定して伸長させたものである。また、レン
ズ３と光ファイバー１の端部との距離りは、少くともレ
ーザ入力の際の光ファイバー１の伸びｅより長く設定す
る。The protective tube 6, the protective tube 2, and the outer tube 5 are not fixed and can move freely. Further, the coil spring 8 made of a shape memory alloy is expanded by setting the reverse transformation start temperature to 283K after shape memory treatment. Further, the distance between the lens 3 and the end of the optical fiber 1 is set to be at least longer than the elongation e of the optical fiber 1 during laser input.
原理を説明すると、レーザ入力により光ファイバー１は
伸び、光ファイバー１の端部とレンズ３との距離りは縮
むが、レーザ光の拡す角のため、保護管６内部に直接レ
ーザ光の一部が照射されたり、レンズ３での反射光が光
フアイバ−１＠面に入らず保護管６内部に当り、温度が
上昇する。そして、保護管６を介して、コイルばね８に
熱が伝わり、３１３Ｋ（４０″Ｃ）に温度が上った時に
形状記憶変形して縮み、光ファイバー１の端面とレンズ
３との距離りが短くなり、保護管６内部に直接レーザ光
が当ることはなく、レンズ３での反射光が光ファイバー
１の端°而に入る割合が高くなり。To explain the principle, the optical fiber 1 is extended by the laser input, and the distance between the end of the optical fiber 1 and the lens 3 is shortened, but due to the expanding angle of the laser beam, a part of the laser beam is directly transmitted inside the protection tube 6. The light irradiated or reflected by the lens 3 does not enter the optical fiber 1 @ surface and hits the inside of the protection tube 6, resulting in an increase in temperature. Then, heat is transferred to the coil spring 8 through the protection tube 6, and when the temperature rises to 313K (40''C), it undergoes shape memory deformation and shrinks, shortening the distance between the end face of the optical fiber 1 and the lens 3. Therefore, the laser beam does not directly hit the inside of the protection tube 6, and the proportion of the reflected light from the lens 3 entering the end of the optical fiber 1 increases.
保護管６内部の温度上昇を防ぐことができる。A rise in temperature inside the protection tube 6 can be prevented.
この構造のため、ｆＢ造上、レンズ３と光フアイバー１
端而との厳密な調整は不要となる。また、保護管６内部
の熱影響で光ファイバー１が劣化するのを防止すること
ができる。Due to this structure, in fB construction, lens 3 and optical fiber 1
There is no need for strict coordination with other parties. Furthermore, it is possible to prevent the optical fiber 1 from deteriorating due to the influence of heat inside the protection tube 6.
第２図に、第２の実施例のレーザグローブの先端部を示
す。FIG. 2 shows the tip of the laser glove of the second embodiment.
この実施例の構成は、レンズ３に直接、形状記憶合金の
Ｎｉ−Ｔｉのコイルばね８を接合するものである。The configuration of this embodiment is such that a coil spring 8 made of Ni--Ti, which is a shape memory alloy, is directly bonded to the lens 3.
原理及び作用については、第１の実施例と同様である。The principle and operation are the same as in the first embodiment.
なお、形状記憶合金製のコイルばね８としてＮ ｉ −
Ｔ ｉを用いて説明したが、 Ｃｕ−Ｚｒ−Ａ（７合金
５Ｆｅ−Ｎｉ−Ｃｏ−Ｔｉ合金を用いても同様の効果が
得られる。Note that as the coil spring 8 made of shape memory alloy, N i −
Although the explanation has been made using Ti, similar effects can be obtained by using Cu-Zr-A (7 alloy 5Fe-Ni-Co-Ti alloy).
また、Ｎｉ−Ｔｉ合金の逆変態開始温度を２８３にと設
定したが、使用環境温度及びレーザプｏ −ブ先端の検
知温度によって２２３に〜３７３にの間で設定可能であ
る。Further, although the reverse transformation start temperature of the Ni-Ti alloy was set at 283, it can be set between 223 and 373 depending on the operating environment temperature and the detected temperature at the tip of the laser probe.
また、第１の実施例で、熱伝導性の良い保護管６の材質
を銅として説明したが、アルミ等を用いても同様の効果
が得られる。Further, in the first embodiment, copper is used as the material of the protective tube 6 having good thermal conductivity, but the same effect can be obtained even if aluminum or the like is used.
また、プローブ先端にレンズを用いたが１．４Ｉなるウ
ィンドでも同様である。Further, although a lens is used at the tip of the probe, the same applies to a 1.4I window.
また、保護チューブ及び外管は、テフロン製として説明
したが、ステンレス等の金属管や樹脂チューブを用いて
も良い。Furthermore, although the protective tube and the outer tube have been described as being made of Teflon, metal tubes such as stainless steel tubes or resin tubes may also be used.
発明の効果
以上のように本発明によれば、保護管内部の熱影響で光
フアイバ一端部が劣化するのを防ＩＥできる。Effects of the Invention As described above, according to the present invention, it is possible to prevent IE from deteriorating one end of the optical fiber due to the influence of heat inside the protection tube.
また、製造上、レンズと光フアイバ一端面との距離の厳
密な調整は不要となる。Further, in manufacturing, there is no need to strictly adjust the distance between the lens and one end surface of the optical fiber.
第１図は本発明の第１の実施例を示すレーザプローブの
先端部の部分断面図、第２図は本発明の第２の実施例を
示すレーザプローブの先端部の部分断面図、第３図は従
来のレーザプローブの先端部の部分断面図である。
１・・・・・・光ファイバー、２・・・・・・保護チュ
ーブ、３・・・・・レンズ、６・・・・・・保護管、８
・・・・・・コイルばね。FIG. 1 is a partial sectional view of the tip of a laser probe showing a first embodiment of the present invention, FIG. 2 is a partial sectional view of the tip of a laser probe showing a second embodiment of the invention, and FIG. The figure is a partial cross-sectional view of the tip of a conventional laser probe. 1... Optical fiber, 2... Protection tube, 3... Lens, 6... Protection tube, 8
・・・・・・Coil spring.
Claims (2)
、レンズを保持した熱伝導性の良い保護管と、前記保護
管に接合させた形状記憶合金製のコイルばねから成るこ
とを特徴とするレーザプローブ。(1) A laser probe comprising an outer tube that houses an optical fiber and a protective tube, a protective tube with good thermal conductivity that holds a lens, and a coil spring made of a shape memory alloy bonded to the protective tube. .
、レンズに接合させた形状記憶合金製のコイルばねから
成ることを特徴とするレーザプローブ。(2) A laser probe characterized by comprising an outer tube that houses an optical fiber and a protective tube, and a coil spring made of a shape memory alloy bonded to a lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1042367A JPH02220006A (en) | 1989-02-22 | 1989-02-22 | laser probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1042367A JPH02220006A (en) | 1989-02-22 | 1989-02-22 | laser probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02220006A true JPH02220006A (en) | 1990-09-03 |
Family
ID=12634069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1042367A Pending JPH02220006A (en) | 1989-02-22 | 1989-02-22 | laser probe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02220006A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120085421A (en) * | 2025-04-07 | 2025-06-03 | 河北卓思通信器材有限公司 | An optical fiber connector that is easy to assemble |
-
1989
- 1989-02-22 JP JP1042367A patent/JPH02220006A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120085421A (en) * | 2025-04-07 | 2025-06-03 | 河北卓思通信器材有限公司 | An optical fiber connector that is easy to assemble |
| CN120085421B (en) * | 2025-04-07 | 2025-08-22 | 河北卓思通信器材有限公司 | An optical fiber connector that is easy to assemble |
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