JPS6287903A - Production of optical conductor - Google Patents
Production of optical conductorInfo
- Publication number
- JPS6287903A JPS6287903A JP22816785A JP22816785A JPS6287903A JP S6287903 A JPS6287903 A JP S6287903A JP 22816785 A JP22816785 A JP 22816785A JP 22816785 A JP22816785 A JP 22816785A JP S6287903 A JPS6287903 A JP S6287903A
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- tip
- light guide
- flame
- heat
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 239000004020 conductor Substances 0.000 title 1
- 230000003287 optical effect Effects 0.000 title 1
- 239000013307 optical fiber Substances 0.000 claims description 20
- 239000013308 plastic optical fiber Substances 0.000 claims description 11
- 239000011162 core material Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 239000003779 heat-resistant material Substances 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 238000005979 thermal decomposition reaction Methods 0.000 claims description 4
- 239000000835 fiber Substances 0.000 description 12
- 239000000463 material Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- -1 polyethylene terephthalate Polymers 0.000 description 4
- 239000004925 Acrylic resin Substances 0.000 description 3
- 229920000178 Acrylic resin Polymers 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 238000004833 X-ray photoelectron spectroscopy Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920006332 epoxy adhesive Polymers 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Mechanical Coupling Of Light Guides (AREA)
- Light Guides In General And Applications Therefor (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】
（童業上の利用分野）
本発明は、各種センサー、ライトガイド等の光伝送路と
して用いるプラスチック系光ファイバー製導光体の製造
方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Use) The present invention relates to a method for manufacturing a plastic optical fiber light guide used as a light transmission path for various sensors, light guides, and the like.
（従来の技術）
プラスチック系光ファイバーは、その製造工程で延伸し
ているため、これ全加熱すると直径方向に膨大化し、ま
た端面が溶融される程に加熱して冷却すると平滑化する
という特徴かある。(Prior art) Plastic optical fibers are stretched during the manufacturing process, so when they are fully heated, they expand in the diameter direction, and when they are heated to the point that their end faces are melted and cooled, they become smooth. .
このような特徴金利用し、プラスチック系光ファイバー
の端部に嵌合したフェルール等と称される筒体の固着な
らびに端面仕上げをすることは、本出願人か既に提案し
た特開昭５７−１８１５１３号公報や特開昭５８−１８
７９０３号公報によって知られている。The use of such characteristic gold to fix and finish the end surface of a cylindrical body called a ferrule fitted to the end of a plastic optical fiber is disclosed in Japanese Patent Laid-Open No. 57-181513, which the present applicant has already proposed. Publications and Japanese Unexamined Patent Publications 1986-18
It is known from Publication No. 7903.
（発明が解決しようとする問題点）
本発明は上記の如き方法のうち、プラスチック系光ファ
イバーを高温でかつ鏡面等と非接触の状態で加熱するこ
とが、処理時間の短縮、端面の汚損防止に効果的である
ことに着目し、しかも使用しうる光ファイバーと同等乃
至はそれ以下の耐熱性の乏しい筒体全便用した場合であ
っても同等問題なく製造することのできる方法を提案し
ようとするものである。(Problems to be Solved by the Invention) Of the methods described above, the present invention proposes that heating the plastic optical fiber at a high temperature without contacting the mirror surface, etc. shortens the processing time and prevents the end face from being contaminated. This paper aims to propose a method that focuses on being effective and can be manufactured without the same problems even when a whole cylinder with poor heat resistance is used, which is equivalent to or lower than that of optical fibers that can be used. It is.
（問題点全解決するための手段）
すなわち本発明は上記目的を達成するためにツク製の筒
体に嵌合すると共に、該筒体の先端面のほとんどを覆う
ことがでキ、シかも上記元ファイバーを嵌挿してその先
端を露出させることのできる耐熱材料製のカバー体音一
時的に取付け、しかるのち光ファイバーの先端と熱源と
を、熱との接触温度が３００℃以上となる位置において
、元ファイバー芯材の熱分解を起させない時間相対的に
移動させ、これによって光ファイバー先端全直径方向に
膨大化させると共に端面を鏡面仕上げし、処理後にカバ
ー体を除去すること全特徴とする導光体の製造方法にあ
る。(Means for Solving All Problems) That is, in order to achieve the above object, the present invention is capable of fitting into a cylinder made of wood and covering most of the tip surface of the cylinder. Temporarily attach a cover body made of heat-resistant material that allows the original fiber to be inserted and expose its tip, and then connect the tip of the optical fiber to a heat source at a position where the contact temperature with the heat is 300°C or higher. A light guide characterized by moving the original fiber core material relatively for a period of time that does not cause thermal decomposition, thereby enlarging the tip of the optical fiber in the direction of the entire diameter, finishing the end face with a mirror finish, and removing the cover body after processing. It is in the manufacturing method.
以下本発明を実施例の図面に従って説明する。The present invention will be described below with reference to drawings of embodiments.
第１図は火炎を熱源とする本発明方法の概略を示してお
り、図中（１）かプラスチック系光ファイバー、（２）
がゴムまたはプラスチック製の筒体、（３）が耐熱性材
料製のカバー体、（４）が炎、（５）が火炎発生装置に
おけるノズル、（６）がガス供給管である。Figure 1 shows an outline of the method of the present invention using flame as a heat source.
is a cylinder made of rubber or plastic, (3) is a cover made of a heat-resistant material, (4) is a flame, (5) is a nozzle in the flame generator, and (6) is a gas supply pipe.
このうちのプラスチック系光ファイバー（１〕としては
、芯材がアクリル樹脂、鞘材が含フツソ樹脂からなるも
の、芯材がスチレン樹脂、鞘材がアクリル樹脂等からな
るものが用いられるが勿論これに限定さ扛ない。また、
ゴムまたはプラスチック製の筒体（２）としては、上記
プラスチック系光ファイバー（１）の耐熱性より若干高
いか同等乃至はそれ以下の耐熱性の乏しい材料か使用で
きるが、具体的にはＡＢＳ樹脂、ナイロン樹脂、ポリエ
チレンテレフタレート、ポリブチレンテレフタレート、
ポリエチレン、ポリプロピレンあるいはこｎらにガラス
繊維等のフイラｆ混入したもの等が用いられる。さらに
耐熱性材料製のカバー体（３）は真ちゅう、ステンレス
鋼等の金属ならびにセラミックス製のものが用いらｎる
。Among these, plastic optical fibers (1) include those in which the core material is acrylic resin and the sheath material is made of fluorine-containing resin, and those in which the core material is styrene resin and the sheath material is acrylic resin, etc. There are no limitations.Also,
As the rubber or plastic cylinder (2), it is possible to use a material with poor heat resistance that is slightly higher than, equal to, or lower than the heat resistance of the plastic optical fiber (1), but specifically ABS resin, Nylon resin, polyethylene terephthalate, polybutylene terephthalate,
Polyethylene, polypropylene, or those mixed with a filler such as glass fiber are used. Furthermore, the cover body (3) made of heat-resistant material may be made of metal such as brass, stainless steel, or ceramics.
１次この場合の火炎発生装置は、特に限定されないが高
温で汚ｎのない酸水素炎発生装置音用いるとよい。The flame generator in this case is not particularly limited, but it is preferable to use a high-temperature, clean oxyhydrogen flame generator.
本発明はこのような装置音用いて導光体を製造する方法
であるが、１ず第２図（Ａ）の如く用意する。すなわち
プラスチック光ファイバー（１）は先端部の覆い（１２
）ｔ−除去して露出（１１）させ、先端を突出させて筒
体（２）に嵌合し、この状態でカバー体（３）ヲ一時的
に取付ける。このときのカバー体（３）は、第３図の如
く筒体嵌入部（３１）、元ファイバー嵌挿用の孔（３２
）’ｉ備えていて、この例では孔（３２）の周縁にくぼ
み（３３）が形成されている。したがって、筒体（２）
の先端面のほとんど覆うことができ、しかも元ファイバ
ー（１）全嵌挿してその先端を露出させることのできる
ようになっている。なお図中（２１）は筒体（２）の段
付きの挿通孔、（２２）はその先端の切除部である。The present invention is a method of manufacturing a light guide using such a device sound. First, the light guide is prepared as shown in FIG. 2(A). In other words, the plastic optical fiber (1) has a cover (12) at its tip.
) T-Remove and expose (11), make the tip protrude and fit into the cylinder (2), and in this state temporarily attach the cover body (3). At this time, the cover body (3) includes a cylindrical body insertion part (31), a hole for inserting the original fiber (32), as shown in FIG.
)'i, and in this example, a recess (33) is formed around the periphery of the hole (32). Therefore, the cylinder (2)
It is possible to cover most of the distal end surface of the fiber (1), and to expose the distal end by completely inserting the original fiber (1). In the figure, (21) is a stepped insertion hole of the cylinder (2), and (22) is a cutout at its tip.
そして本発明はこのような状態にし洗上で、熱源すなわ
ちこの場合の炎の接触温度が３００Ｃ以上となる位置に
おいて光ファイバー（１）の先端と火炎（４）とを、光
ファイバー（１）芯材の熱分解による発泡を起さない時
間相対的に５ｅ勧させて処理するが、具体的には第１図
の（ａｌの如く、元ファイバー（１）のａｔ−上向きに
して短時間移動させる。このとき炎（４］と元ファイバ
ー（１）先端とは、炎（４）の接触温度が３００℃以上
となる位置にすると、第２図（Ｂｌの如く先端が湾曲面
形状（１Ａ）で平滑となった導光体が得られる。なお、
このときの温度を３００℃未満にすると処理時間の短縮
化が図れないばかりか、炎（４）との接触による汚れ等
の欠陥が発生し易くなる。ちなみに芯材かアクリル樹脂
、鞘材が含フツソ樹脂からなる元ファイバー（１）の場
合、５００〜７００℃程度の位置で行なうとよい。In the present invention, the tip of the optical fiber (1) and the flame (4) are connected to the core material of the optical fiber (1) at a position where the contact temperature of the heat source, that is, the flame in this case, is 300C or more. The treatment is carried out for a relatively long time of 5e to prevent foaming due to thermal decomposition. Specifically, as shown in FIG. When the flame (4) and the tip of the original fiber (1) are placed at a position where the contact temperature of the flame (4) is 300°C or higher, the tip will have a curved surface shape (1A) and be smooth as shown in Figure 2 (Bl). A light guide with the following characteristics can be obtained.
If the temperature at this time is less than 300° C., not only the processing time cannot be shortened, but also defects such as staining due to contact with the flame (4) are likely to occur. Incidentally, in the case of the original fiber (1) in which the core material is an acrylic resin and the sheath material is a fluorine-containing resin, the heating is preferably carried out at a temperature of about 500 to 700°C.
また、このときの処理時間は元ファイバー（１）の芯材
が熱分解による発泡を起さないような時間、例えば上記
温度範囲においては１秒前後移動させればよい。このと
き第１図の如く炎（４）を下向き、元ファイバー（１）
全上向きにすると、浴融した光ファイバー（１）の先端
の湾曲面形状（１Ａ）が歪んだりすることが少ないか、
勿論このような位置関係に限定さｎない。ま几、この際
元ファイバー（１）側を移動せずに固定し、火炎を移動
させるようにしてもよい〇
なお、上記例のようにカバー体（３）の孔（３２）の周
縁にくぼみ（３３） ｔ”設けると、炎（４）の元ファ
イバー（１）先端に対する熱接触がスムースに行なえる
利点があり、また筒体（２）に欠除部（２２）ｔ−設け
ておくと、光ファイバー（１）先端の溶融部を収めるこ
とができ、先端の形状賦形に好結果を与えるばかりでな
く、光ファイバー（１）の筒体（２）に対する矢印（ｂ
）方向の引抜き強度を高めることができる利点がある。Further, the processing time at this time may be such that the core material of the original fiber (1) does not foam due to thermal decomposition, for example, it may be moved for about 1 second in the above temperature range. At this time, as shown in Figure 1, direct the flame (4) downward and connect the original fiber (1)
If it is turned completely upward, the curved surface shape (1A) at the tip of the bath-fused optical fiber (1) will be less likely to be distorted.
Of course, the positional relationship is not limited to this. Alternatively, in this case, the source fiber (1) side may be fixed without moving and the flame may be moved.In addition, as in the above example, a recess is formed around the hole (32) of the cover body (3). (33) Providing a cutout (22) t in the cylinder body (2) has the advantage of allowing smooth thermal contact between the flame (4) and the tip of the original fiber (1). , it is possible to accommodate the molten part of the tip of the optical fiber (1), which not only gives good results in shaping the tip, but also allows the arrow (b) of the optical fiber (1) to be
) has the advantage of increasing the pull-out strength in the direction.
（実施例）
実施例１
はぼ第１図に示す要領で、直径１ｗａのプラスチック光
ファイバー１エス力」（三菱レイヨン社製）に、ＡＢＳ
樹脂製の筒体を嵌合して導光体全製造した。このとき用
いたカバー体は図示するものを用い、その材料はステン
レス製とした。(Example) Example 1 As shown in Figure 1, an ABS plastic optical fiber with a diameter of 1 wa (manufactured by Mitsubishi Rayon Co., Ltd.) was attached.
The entire light guide was manufactured by fitting a resin cylinder. The cover body used at this time was the one shown in the figure, and its material was stainless steel.
１７ｊ火炎発生装置は、ハーブ社製小型ガス発生器を便
用し、炎の接触温度が６００℃となる位置で約１秒間移
動させて処理した。17j A small gas generator manufactured by Herb Co., Ltd. was used as the flame generator, and the treatment was performed by moving it for about 1 second at a position where the contact temperature of the flame was 600°C.
処理後にカバー体を除去し、光ファイバーを筒体側に引
張って、はソ第２図に示す導光体金得たが、Ｃａｎは元
ファイバーの先端が湾曲状の鏡面を呈し、かつ筒体に密
着した良好なものであった。After the treatment, the cover was removed and the optical fiber was pulled toward the cylinder to obtain the light guide shown in Fig. It was a good one.
そしてこの導光体全第２図（Ｂｌの矢印（ｂｌに引張っ
て引抜き強度を測定したところ４ Ｋ９あり、その切断
箇所は光ファイバーそのものの破壊が起きていた。また
境面の光沢度は９７チであった。When the pull-out strength of this light guide was measured by pulling it on the arrow shown in Figure 2 (Bl), it was found to be 4 K9, and the optical fiber itself was destroyed at the cut point.The gloss of the interface was 97 K9. Met.
最後に光ファイバーが矢印（Ｃ１方向に移動しないよう
に、筒体の先端とは反対側の挿通孔にエポキシ系の接着
剤を注入して接着した。Finally, to prevent the optical fiber from moving in the direction of the arrow C1, an epoxy adhesive was injected into the insertion hole on the opposite side of the tip of the cylinder to bond it.
実施例２
直径α５謡の「エスカ」を用い、実施例１と同じ要領で
導光体を製造した。このとき炎の接触温度が５００℃と
なる位置で、約１秒で移動させた。Example 2 A light guide was manufactured in the same manner as in Example 1 using "ESCA" with a diameter of α5. At this time, the flame was moved in about 1 second to a position where the contact temperature of the flame was 500°C.
このようにして得らｎた導光体は、実施例１と同傍、良
好なものであり、引抜き強度は２ｑ、光沢度は９８チで
６つ友。The light guide thus obtained was as good as Example 1, with a pull-out strength of 2q and a gloss of 98, which was a 6 star.
以上の実施例においては、熱源としては装置が比較的安
価で取扱いも容易な火炎発生装置を用いた場合について
説明したが、本発明は火炎の代わりに高温熱風発生装置
あるいはレーザー発生装置によっても実施することがで
きる＠またプラスチック系光ファイバー（１）の先端全
筒体（２）の端面より若干突出させて導光体を製造して
いるが、この突出させる高さは、光ファイバーの種類、
太さあるいは処理温度によって適宜調節するとよい。さ
らに本発明は１本の元ファイバーを嵌合した筒体をもつ
ものだけでなく、２本以上の光ファイバーを筒体に嵌合
し几導光体を製造することもできる。In the above embodiments, a case was explained in which a flame generator, which is relatively inexpensive and easy to handle, was used as a heat source, but the present invention can also be implemented using a high-temperature hot air generator or a laser generator instead of a flame. In addition, the light guide is manufactured by making the tip of the plastic optical fiber (1) slightly protrude from the end surface of the entire cylindrical body (2), but the height of this protrusion depends on the type of optical fiber,
It may be adjusted as appropriate depending on the thickness or processing temperature. Furthermore, the present invention is not limited to manufacturing a light guide having a cylindrical body into which one original fiber is fitted, but can also be manufactured by fitting two or more optical fibers into a cylindrical body.
（発明の効果）
本発明は以上詳述した如き構成からなるものであるから
、耐熱性が十分といえない筒体音用いても、短時間で美
麗な鏡面仕上げができ、しかも筒体が密着性よく固着さ
れ几導光体を効率よく製造しつる利点がある。(Effects of the Invention) Since the present invention has the configuration as described in detail above, even if a cylindrical body with insufficient heat resistance is used, a beautiful mirror finish can be achieved in a short period of time, and the cylindrical body can be tightly adhered. It has the advantage of being able to be fixed firmly and efficiently manufacturing a solid light guide.
第１図は本発明の方法を実施する状態の概略的な説明図
、第２図（Ａ）、（Ｅ）は処理する前と後の導光体の要
部の断面図、第５図はカバー体の断面図である。
（１）・・・・・プラスチック系光ファイバー（２）・
・・・・ゴムまたはプラスチック製の筒体（３）・・・
・・耐熱性材料製のカバー体（４）・・・・・炎Figure 1 is a schematic explanatory diagram of the state in which the method of the present invention is carried out, Figures 2 (A) and (E) are sectional views of the main parts of the light guide before and after treatment, and Figure 5 is It is a sectional view of a cover body. (1)・・・Plastic optical fiber (2)・
...Rubber or plastic cylinder (3)...
...Cover body made of heat-resistant material (4) ...Flame
Claims (1)
ク製の筒体に嵌合すると共に、該筒体の先端面のほとん
どを覆うことができ、しかも上記光ファイバーを嵌挿し
てその先端を露出させることのできる耐熱材料製のカバ
ー体を一時的に取付け、しかるのち光ファイバーの先端
と熱源とを、熱との接触温度が３００℃以上となる位置
において、光ファイバー芯材の熱分解を起させない時間
相対的に移動させ、これによつて光ファイバー先端を直
径方向に膨大化させると共に端面を鏡面仕上げし、処理
後にカバー体を除去することを特徴とする導光体の製造
方法。 ２、熱源を火炎とすることを特徴とする特許請求の範囲
第１項記載の導光体の製造方法。 ３、光ファイバーを嵌挿させる孔周縁にくぼみを有する
カバー体を用いたことを特徴とする特許請求の範囲第１
項または第２項記載の導光体の製造方法。[Claims] 1. A plastic optical fiber is fitted into a cylinder made of rubber or plastic, and can cover most of the tip surface of the cylinder, and the optical fiber is fitted and inserted to expose the tip. Temporarily attach a cover body made of a heat-resistant material that can be used to heat the optical fiber, and then place the tip of the optical fiber and the heat source at a position where the contact temperature with the heat is 300°C or higher for a period of time that does not cause thermal decomposition of the optical fiber core material. 1. A method for manufacturing a light guide, which comprises moving the optical fiber diametrically, thereby enlarging the tip of the optical fiber in the diametrical direction, mirror-finishing the end surface, and removing the cover body after the treatment. 2. The method for manufacturing a light guide according to claim 1, wherein the heat source is a flame. 3. Claim 1, characterized in that a cover body having a recess around the hole into which the optical fiber is inserted is used.
2. A method for producing a light guide according to item 2 or item 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22816785A JPS6287903A (en) | 1985-10-14 | 1985-10-14 | Production of optical conductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22816785A JPS6287903A (en) | 1985-10-14 | 1985-10-14 | Production of optical conductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6287903A true JPS6287903A (en) | 1987-04-22 |
Family
ID=16872277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22816785A Pending JPS6287903A (en) | 1985-10-14 | 1985-10-14 | Production of optical conductor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6287903A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57181513A (en) * | 1981-05-01 | 1982-11-09 | Mitsubishi Rayon Co Ltd | Photoconductor, production thereof and cylindrical body used for it |
| JPS59192203A (en) * | 1983-04-15 | 1984-10-31 | Matsushita Electric Works Ltd | Method and device for treating end face of plastic optical fiber |
| JPS6024507A (en) * | 1983-07-20 | 1985-02-07 | Dainichi Nippon Cables Ltd | Connecting method of optical fiber cable by welding |
-
1985
- 1985-10-14 JP JP22816785A patent/JPS6287903A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57181513A (en) * | 1981-05-01 | 1982-11-09 | Mitsubishi Rayon Co Ltd | Photoconductor, production thereof and cylindrical body used for it |
| JPS59192203A (en) * | 1983-04-15 | 1984-10-31 | Matsushita Electric Works Ltd | Method and device for treating end face of plastic optical fiber |
| JPS6024507A (en) * | 1983-07-20 | 1985-02-07 | Dainichi Nippon Cables Ltd | Connecting method of optical fiber cable by welding |
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