JP2651708B2 - Manufacturing method of small diameter image fiber - Google Patents
Manufacturing method of small diameter image fiberInfo
- Publication number
- JP2651708B2 JP2651708B2 JP63234729A JP23472988A JP2651708B2 JP 2651708 B2 JP2651708 B2 JP 2651708B2 JP 63234729 A JP63234729 A JP 63234729A JP 23472988 A JP23472988 A JP 23472988A JP 2651708 B2 JP2651708 B2 JP 2651708B2
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- jacket
- image fiber
- diameter
- preform
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/66—Chemical treatment, e.g. leaching, acid or alkali treatment
- C03C25/68—Chemical treatment, e.g. leaching, acid or alkali treatment by etching
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Endoscopes (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） この発明はイメージファイバ、特に石英系のイメージ
ファイバの製造方法に関するもので、その細径化を図っ
たものである。Description: TECHNICAL FIELD The present invention relates to a method for producing an image fiber, particularly a quartz-based image fiber, and is intended to reduce the diameter thereof.
（従来の技術） 近年、石英ガラスを用いたイメージファイバの適用範
囲は広がり、中でも医療用への応用が注目を集めてい
る。すなわちイメージファイバは冠状動脈の内側の血栓
状態、あるいはアテロームの状況を観察するための血管
内視鏡としての利用が検討されており、この場合、用い
るイメージファイバの径は小さいほど患者の負担が軽い
ため極細径のものが望まれている。(Prior Art) In recent years, the application range of an image fiber using quartz glass has been widened, and in particular, application to medical use has attracted attention. That is, the use of an image fiber as a blood vessel endoscope for observing the state of thrombus inside the coronary artery or the state of atheroma is being studied.In this case, the smaller the diameter of the image fiber used, the lighter the burden on the patient Therefore, an ultra-thin diameter is desired.
（発明が解決しようとする課題） しかしながら、従来のイメージファイバの製法は、多
数の画素用ファイバをジャケット用のガラス管内に詰込
んでプリフォームとなし、次いでこのプリフォームを加
熱線引きして溶融一体化してファイバとする方法である
ため、ジャケット用のガラス管を必要としている。しか
しこのジャケット用のガラス管は、その中に画素用ファ
イバを詰込むという作業があるため、その肉厚が薄いと
割れの問題が生じるので余り薄くできない。したがって
得られるイメージファイバの径はこのジャケットガラス
の分だけ厚くならざるを得ない。(Problems to be Solved by the Invention) However, in the conventional method of manufacturing an image fiber, a large number of pixel fibers are packed in a glass tube for a jacket to form a preform, and then the preform is heated and drawn to be integrated into a melt. This method requires a glass tube for a jacket because the fiber is converted into a fiber. However, this jacket glass tube cannot be made very thin because there is an operation of packing the pixel fiber into the glass tube. Therefore, the diameter of the obtained image fiber must be increased by the thickness of the jacket glass.
（課題を解決するための手段） この発明は、以上の観点から多数の画素用ファイバ
を、ジャケット用のガラス管内に詰め込んでイメージフ
ァイバ用プリフォームを得、これを一端から加熱線引き
して溶融一体化してファイバとし、このファイバをフッ
素含有ガス雰囲気炉内を通過させてファイバ外周面のジ
ャケット部をエッチングするようにしたもので、以って
ジャケットの厚さを薄くして全体の径を細くしたもので
ある。ここにフッ素含有ガスとしては、SF6,CF4,CCl
2F2,等があげられる。(Means for Solving the Problems) According to the present invention, a large number of pixel fibers are packed in a jacket glass tube from the above viewpoint to obtain an image fiber preform, which is heated and drawn from one end to be fused and integrated. The fiber was passed through a furnace containing a fluorine-containing gas atmosphere to etch the jacket on the outer peripheral surface of the fiber.Thus, the thickness of the jacket was reduced to reduce the overall diameter. Things. Here, SF 6 , CF 4 , CCl
2 F 2 , and the like.
（実施例） 第１図は、この発明方法に用いられる装置の概略図を
示したもので、１はイメージファイバ用のプリフォーム
で、ジャケットとなる石英管内に画素用ファイバを多数
本詰め込んでなるもの、２はこのプリフォーム１を加熱
線引きするための炉、３は線引きされたファイバ４の外
周面の石英ジャケット部をエッチングするための反応炉
で、石英製の反応管31、それを囲むカーボン製の発熱体
32とからなり、反応管31の下部にはエッチング用のガス
供給口33が設けられており、またその上部側面にはガス
排出口34が形成されている。５は石英ジャケット部がエ
ッチングされたファイバ４上に保護のための樹脂を被覆
するためのコータ、６はこの樹脂を硬化させる硬化炉、
７は被覆ファイバを引取るためのキャプスタン、８は巻
きとりボビンである。(Embodiment) FIG. 1 is a schematic view of an apparatus used in the method of the present invention. Reference numeral 1 denotes a preform for an image fiber, in which a number of pixel fibers are packed in a quartz tube serving as a jacket. Reference numeral 2 denotes a furnace for heating and drawing the preform 1, and 3 denotes a reaction furnace for etching a quartz jacket portion on the outer peripheral surface of the drawn fiber 4, which is made of a quartz reaction tube 31, and a carbon tube surrounding it. Heating element made of
A gas supply port 33 for etching is provided at a lower portion of the reaction tube 31, and a gas outlet 34 is formed at an upper side surface thereof. 5 is a coater for coating a resin for protection on the fiber 4 having the quartz jacket portion etched, 6 is a curing furnace for curing the resin,
7 is a capstan for taking the coated fiber, and 8 is a winding bobbin.
（具体例） 内径1.8cm,外径2.0cm,長さ40cmの石英ガラス管内に直
径170μｍ、長さ30cmのファイバ素線を10000本詰込んで
なるイメージファイバ用プリフォーム１の下端を加熱炉
２により2,000℃に加熱溶融して一体化させつつ線引き
して直径670μｍのファイバ４とした。この時のキャプ
スタン７の線引き速度は2m/分であった。このファイバ
４を反応炉３内を通してファイバ最外層のシリカジャケ
ット外周部をエッチングして直径610μｍのファイバと
した。この時反応炉管内の温度を1000℃に維持するとと
もにCF4ガスを供給口33から100cc/分供給した。続いて
このエッチングされたファイバをコータ５内を通してウ
レタンアクリレート樹脂を30μｍ厚に施し硬化炉６で硬
化させボビン８に巻きとった。かくして得られたイメー
ジファイバは従来と等しい画素径、画素数にもかかわら
ずその外径を９％減じることができた。(Specific Example) A heating furnace 2 is attached to the lower end of an image fiber preform 1 in which 10,000 fiber strands having a diameter of 170 μm and a length of 30 cm are packed in a quartz glass tube having an inner diameter of 1.8 cm, an outer diameter of 2.0 cm and a length of 40 cm. The fiber 4 was heated and melted at 2,000 ° C. to form a fiber 4 having a diameter of 670 μm while being integrated. At this time, the drawing speed of the capstan 7 was 2 m / min. The fiber 4 was passed through the reactor 3 and the outer periphery of the silica jacket of the outermost layer of the fiber was etched to obtain a fiber having a diameter of 610 μm. At this time, the temperature in the reactor tube was maintained at 1000 ° C., and CF 4 gas was supplied from the supply port 33 at 100 cc / min. Subsequently, the etched fiber was coated with a urethane acrylate resin to a thickness of 30 μm through a coater 5, cured in a curing furnace 6 and wound around a bobbin 8. The outer diameter of the image fiber thus obtained could be reduced by 9% despite the same pixel diameter and number of pixels as before.
（発明の効果） この発明は、以上のように石英ジャケットタイプのイ
メージファイバにおいて、ファイバ化後に石英ジャケッ
ト部をエッチングして全体の細径化を図る方法であるの
で、石英ジャケット管として従来使用していたものを使
用でき、以ってプリフォームを作る段階で破損すること
がなく細径イメージファイバを得ることができる。(Effects of the Invention) As described above, in the quartz jacket type image fiber, since the quartz jacket portion is etched to reduce the diameter of the whole after being formed into a fiber, it is conventionally used as a quartz jacket tube. Thus, a small-diameter image fiber can be obtained without being damaged at the stage of producing a preform.
第１図は、この発明の実施例に用いられる装置の概略図
である。 図において、1:石英ジャケット型プリフォーム、3:反応
炉、33:フッ素含有ガス供給口。FIG. 1 is a schematic diagram of an apparatus used in an embodiment of the present invention. In the figure, 1: a quartz jacket type preform, 3: a reaction furnace, 33: a fluorine-containing gas supply port.
Claims (1)
ガラス管内に詰め込んでイメージ用プリフォームとな
し、次いでこのプリフォームを加熱線引きして溶融一体
化したファイバとなし、このファイバをフッ素含有ガス
雰囲気炉内を通過させてファイバ外周面のジャケット部
をエッチングしてその外径を細くすることを特徴とする
細径イメージファイバの製造方法。1. A plurality of pixel fibers are packed in a glass tube for a jacket to form an image preform, and then the preform is heated and drawn to form a fused and fused fiber. A method for producing a small-diameter image fiber, characterized in that the outer diameter of the fiber is reduced by etching the jacket portion on the outer peripheral surface of the fiber by passing the fiber through an atmosphere furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63234729A JP2651708B2 (en) | 1988-09-21 | 1988-09-21 | Manufacturing method of small diameter image fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63234729A JP2651708B2 (en) | 1988-09-21 | 1988-09-21 | Manufacturing method of small diameter image fiber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0283234A JPH0283234A (en) | 1990-03-23 |
| JP2651708B2 true JP2651708B2 (en) | 1997-09-10 |
Family
ID=16975450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63234729A Expired - Fee Related JP2651708B2 (en) | 1988-09-21 | 1988-09-21 | Manufacturing method of small diameter image fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2651708B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4819138B2 (en) * | 2009-02-05 | 2011-11-24 | 雄一郎 仁科 | Quartz-clad carbon nanotube fiber bundle |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59165005A (en) * | 1983-03-11 | 1984-09-18 | Sumitomo Electric Ind Ltd | Image fiber manufacturing method |
| JPS61291434A (en) * | 1985-06-19 | 1986-12-22 | Furukawa Electric Co Ltd:The | Production of base material for optical fiber |
-
1988
- 1988-09-21 JP JP63234729A patent/JP2651708B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0283234A (en) | 1990-03-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |