JPH0341414B2 - - Google Patents
Info
- Publication number
- JPH0341414B2 JPH0341414B2 JP60220564A JP22056485A JPH0341414B2 JP H0341414 B2 JPH0341414 B2 JP H0341414B2 JP 60220564 A JP60220564 A JP 60220564A JP 22056485 A JP22056485 A JP 22056485A JP H0341414 B2 JPH0341414 B2 JP H0341414B2
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- fiber bundle
- light
- light source
- flexible
- 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 - Lifetime
Links
- 239000013307 optical fiber Substances 0.000 claims description 34
- 239000004033 plastic Substances 0.000 claims description 12
- 229920003023 plastic Polymers 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 230000001678 irradiating effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 7
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 239000011521 glass Substances 0.000 description 5
- 238000000016 photochemical curing Methods 0.000 description 4
- 239000002253 acid Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000004383 yellowing Methods 0.000 description 2
- ILBBNQMSDGAAPF-UHFFFAOYSA-N 1-(6-hydroxy-6-methylcyclohexa-2,4-dien-1-yl)propan-1-one Chemical compound CCC(=O)C1C=CC=CC1(C)O ILBBNQMSDGAAPF-UHFFFAOYSA-N 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (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、可撓部を有する光学繊維束の製造
方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for manufacturing an optical fiber bundle having a flexible portion.
現在、イメージガイド、フライトガイドなどに
使用される光学繊維束には、端部に固定部を形成
する他、中間部に可撓部を形成したものが用いら
れる。そして、可撓部にて屈曲性能を生み出して
いる。
Currently, optical fiber bundles used for image guides, flight guides, etc. have fixed portions formed at the ends and flexible portions formed in the middle portion. The flexible portion provides bending performance.
ところで、こうした可撓性を有する光学繊維束
本体は、たとえば外周に可溶ガラスを被覆した３
重光学繊維を多数本、束ねて溶着し、これを加熱
して延伸し、得られる硬い光学繊維束の端部を被
覆し、その後、全体を酸に接触させて光学繊維の
中間部分から可溶ガラスを溶出することにより製
作される。これは一例であるが、こうした光学繊
維束には、端部の固定部と中間部の可撓部との境
界部に曲げ応力が集中するといつた問題をもち、
光学繊維に発生しやすい欠点がある。 By the way, such a flexible optical fiber bundle main body is, for example, a three-dimensional optical fiber bundle whose outer periphery is coated with fusible glass.
A large number of heavy optical fibers are bundled and welded, heated and stretched, the ends of the resulting hard optical fiber bundle are covered, and the whole is then brought into contact with acid to make the middle part of the optical fibers soluble. Manufactured by eluting glass. This is just one example, but such optical fiber bundles have the problem that bending stress concentrates at the boundary between the fixed part at the end and the flexible part at the middle part.
There are defects that tend to occur in optical fibers.
そこで、こうした欠点に対し、境界部に光硬化
性のプラスチツクを充填し、この光硬化性のプラ
スチツクに向け光源から紫外線を照射して、プラ
スチツクを光硬化させて補強するようにした技術
が提案されている（特開昭59−181305号公報、特
開昭121402号公報）。 To address these shortcomings, a technology has been proposed in which the boundary area is filled with photocurable plastic and the photocurable plastic is irradiated with ultraviolet rays from a light source to photocure and reinforce the plastic. (Japanese Unexamined Patent Application Publication No. 181305/1982, Japanese Patent Unexamined Publication No. 121402).
先行技術は、いずれも光源を境界部の近く（特
開昭59−181305号公報では側部、特開昭121402号
公報では固定部側）に設置して紫外光を直接、プ
ラスチツクに照射して、これにてプラスチツクを
光硬化しているが、こうした照射では光源の熱が
そのまま光学繊維に入射してしまう問題がある。
このため、光学繊維では熱により膨張してクラツ
クが発生したり、プラスチツクが熱で収縮を起こ
して中間部の光学繊維を破壊したり、さらには光
学繊維が黄変してしまう欠点がある。しかも、大
きな領域に紫外光が照射されるために、境界部か
ら離れた部位のプラスチツクまでも光硬化してし
まい、硬質長さが不用意に長くなつてしまう欠点
もある。
In all of the prior art, a light source is installed near the boundary (on the side in JP-A-59-181305, on the fixed part side in JP-A-121402) and irradiates ultraviolet light directly onto the plastic. Although plastic is photocured using this method, there is a problem with such irradiation that the heat from the light source directly enters the optical fiber.
For this reason, there are disadvantages in that optical fibers expand due to heat and cracks occur, plastics shrink due to heat and break the optical fiber in the intermediate portion, and furthermore, the optical fiber yellows. Furthermore, since a large area is irradiated with ultraviolet light, even the plastic in areas far from the boundary is photocured, resulting in an undesirably long hard length.
この発明は、このような問題点に着目してなさ
れたもので、光源の熱による支障を解消すること
を目的とする。 The present invention was made in view of these problems, and aims to solve the problem caused by the heat of the light source.
この光学繊維束の製造方法では、境界部に充填
した光硬化性のプラスチツク７へ光硬化させるた
めの光を導光部材６を通して照射する。
In this method of manufacturing an optical fiber bundle, light for photocuring the photocurable plastic 7 filled in the boundary portion is irradiated through the light guide member 6.
光源５を光学繊維束本体１から遠くに離れて置
き、これから導光部材６を通じ、光硬化性のプラ
スチツク７へ導かれるれる光で、固定部３の端面
側のみのプラスチツク７を光硬化させる。
A light source 5 is placed far away from the optical fiber bundle main body 1, and the plastic 7 only on the end surface side of the fixing part 3 is photocured by the light guided from there to the photocurable plastic 7 through the light guide member 6.
以下、この発明方法を第１図に示す第１の実施
例にもとづき説明する。まず、主要部の構成につ
いて説明すれば、１は光学繊維束本体、２はその
光学繊維束本体１の中間部に形成された可撓部、
３は光学繊維束本体１の端部に形成された固定部
である。可撓部２、固定部３は、たとえば可溶ガ
ラスを外周に３重光学繊維４を多数本束ねて溶着
し、その後、中間部の可溶ガラスを除去するとい
つた先に述べた酸溶出方法によつて成形されてい
る。つまり、固定部３は可溶ガラスで構成され
る。また、５は紫外光を発するUVランプなどの
光源、６は光学繊維（導光部材）である。そし
て、光源５は光学繊維束本体１から離れた地点に
配されていて、この光源５の集光部に光学繊維６
の一端面が臨んでいる。
The method of this invention will be explained below based on a first embodiment shown in FIG. First, to explain the configuration of the main parts, 1 is an optical fiber bundle main body, 2 is a flexible part formed in the middle part of the optical fiber bundle main body 1,
3 is a fixing part formed at the end of the optical fiber bundle main body 1. The flexible part 2 and the fixed part 3 can be formed by the above-mentioned acid elution method, for example, by bundling and welding a large number of triple optical fibers 4 around the outer periphery of fusible glass, and then removing the fusible glass in the middle. It is molded by. In other words, the fixing part 3 is made of fusible glass. Further, 5 is a light source such as a UV lamp that emits ultraviolet light, and 6 is an optical fiber (light guide member). The light source 5 is arranged at a point away from the optical fiber bundle body 1, and the optical fiber 6 is connected to the condensing part of the light source 5.
One end is facing.
つぎに、この発明方法の要部となる、固定部２
と可撓部３との境界部を補強する方法ついて説明
する。すなわち、まず光学繊維束本体１を一方の
固定部３を下に向け上下の方向に沿つて配置す
る。その後、固定部３と可撓部２との境界部に光
硬化型の接着剤（光硬化性のプラスチツク）７を
注入する。こうした固定部３を下にしての注入に
より、毛細管現象による可撓管部２側の流出を防
ぎつつ、接着剤７が充填される。こののち、光源
５を作動させて、光学繊維６の他端面を固定部３
近くの接着部７に対向されば、光源５自身の熱を
光学繊維４…に加えずして、光硬化に必要な光が
接着剤７へ照射されることになる。 Next, the fixing part 2, which is the main part of the method of this invention,
A method for reinforcing the boundary between the flexible portion 3 and the flexible portion 3 will be explained. That is, first, the optical fiber bundle main body 1 is arranged along the up-down direction with one fixing part 3 facing down. Thereafter, a photocurable adhesive (photocurable plastic) 7 is injected into the boundary between the fixed part 3 and the flexible part 2. By injecting with the fixing part 3 facing down, the adhesive 7 is filled while preventing outflow from the flexible tube part 2 side due to capillarity. After that, the light source 5 is activated to attach the other end surface of the optical fiber 6 to the fixing part 3.
If it faces the adhesive part 7 nearby, the adhesive 7 will be irradiated with the light necessary for photocuring without applying the heat of the light source 5 itself to the optical fibers 4 .
かくして、光源５の熱によるクラツクの発生、
同光学繊維４…の破壊、さらには光学繊維４…の
黄変を防止することができる。しかも、光学繊維
６の採用で光硬化に必要な光を固体部３近くへ導
くことができるから、固定部３の端面のみ光硬化
させることができ、硬質長を規制することができ
る。 Thus, the occurrence of cracks due to the heat of the light source 5,
It is possible to prevent the optical fibers 4 from breaking and further from yellowing. Moreover, since the light necessary for photocuring can be guided near the solid part 3 by employing the optical fiber 6, only the end face of the fixing part 3 can be photocured, and the hardening length can be regulated.
また、第２図はこの発明の第２の実施例を示す
もので、これは固定部３の下端面から接着剤７に
向け、光学繊維６を使い光硬化に必要な光を照射
するようにしたものである。 Further, FIG. 2 shows a second embodiment of the present invention, in which light necessary for photocuring is irradiated from the lower end surface of the fixing part 3 toward the adhesive 7 using an optical fiber 6. This is what I did.
なお、光の照射方向は先の横、下方向に限ら
ず、斜め方向でもよい。 Note that the direction of light irradiation is not limited to the horizontal or downward direction, but may be an oblique direction.
以上説明したようにこの発明によれば、熱によ
るクラツクの発生、光学繊維の破壊、光学繊維の
黄変を防止することができる。しかも、固定部の
端面のみ光硬化させることができ、硬質長を規制
することができ、光源の熱による支障を解消する
ことができる。
As explained above, according to the present invention, it is possible to prevent cracks from occurring due to heat, destruction of optical fibers, and yellowing of optical fibers. Furthermore, only the end face of the fixing part can be photocured, the hardening length can be regulated, and problems caused by the heat of the light source can be eliminated.
第１図はこの発明の第１の実施例の方法を説明
するための要部を示す断面図、第２図はこの発明
の第２の実施例の要部を示す断面図である。
１……光学繊維束本体、２……可撓部、３……
固定部、５……光源、６……光学繊維（導光部
材）。
FIG. 1 is a sectional view showing the main parts of the method according to the first embodiment of the invention, and FIG. 2 is a sectional view showing the main parts of the second embodiment of the invention. 1... Optical fiber bundle main body, 2... Flexible part, 3...
Fixed part, 5... Light source, 6... Optical fiber (light guiding member).
Claims (1)
学繊維束本体の前記固定部と前記中間部との境界
部に光硬化性のプラスチツクを充填し、この光硬
化性のプラスチツクへ光硬化させるための光を導
光部材を通して照射することを特徴とする光学繊
維束の製造方法。1 Filling the boundary between the fixed part and the intermediate part of an optical fiber bundle main body with a fixed part at the end and a flexible part in the middle, and applying light to this photocurable plastic. A method for producing an optical fiber bundle, comprising irradiating light for curing through a light guide member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60220564A JPS6283328A (en) | 1985-10-03 | 1985-10-03 | Production of optical fiber bundle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60220564A JPS6283328A (en) | 1985-10-03 | 1985-10-03 | Production of optical fiber bundle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6283328A JPS6283328A (en) | 1987-04-16 |
| JPH0341414B2 true JPH0341414B2 (en) | 1991-06-24 |
Family
ID=16752965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60220564A Granted JPS6283328A (en) | 1985-10-03 | 1985-10-03 | Production of optical fiber bundle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6283328A (en) |
-
1985
- 1985-10-03 JP JP60220564A patent/JPS6283328A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6283328A (en) | 1987-04-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |