JP2857391B2 - Light transmission hose - Google Patents
Light transmission hoseInfo
- Publication number
- JP2857391B2 JP2857391B2 JP62237276A JP23727687A JP2857391B2 JP 2857391 B2 JP2857391 B2 JP 2857391B2 JP 62237276 A JP62237276 A JP 62237276A JP 23727687 A JP23727687 A JP 23727687A JP 2857391 B2 JP2857391 B2 JP 2857391B2
- Authority
- JP
- Japan
- Prior art keywords
- tubular body
- core material
- optical transmission
- transmission hose
- phosphate
- 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
- 230000005540 biological transmission Effects 0.000 title claims description 18
- 239000011162 core material Substances 0.000 claims description 16
- 230000003287 optical effect Effects 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 6
- 229910019142 PO4 Inorganic materials 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 235000021317 phosphate Nutrition 0.000 claims 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 claims 1
- -1 phosphate ester Chemical class 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000007983 Tris buffer Substances 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- ANHAEBWRQNIPEV-UHFFFAOYSA-N 2-chloroethyl dihydrogen phosphate Chemical compound OP(O)(=O)OCCCl ANHAEBWRQNIPEV-UHFFFAOYSA-N 0.000 description 1
- QTHRIIFWIHUMFH-UHFFFAOYSA-N 3-chloropropyl dihydrogen phosphate Chemical compound OP(O)(=O)OCCCCl QTHRIIFWIHUMFH-UHFFFAOYSA-N 0.000 description 1
- CGSLYBDCEGBZCG-UHFFFAOYSA-N Octicizer Chemical compound C=1C=CC=CC=1OP(=O)(OCC(CC)CCCC)OC1=CC=CC=C1 CGSLYBDCEGBZCG-UHFFFAOYSA-N 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 description 1
- 125000002723 alicyclic group Chemical group 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000005331 crown glasses (windows) Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- UJSSNDKVUQJEGE-UHFFFAOYSA-N dichloro propyl phosphate Chemical compound CCCOP(=O)(OCl)OCl UJSSNDKVUQJEGE-UHFFFAOYSA-N 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 description 1
- 239000005308 flint glass Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 229940057995 liquid paraffin Drugs 0.000 description 1
- 239000000113 methacrylic resin Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 229920013653 perfluoroalkoxyethylene Polymers 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 150000003014 phosphoric acid esters Chemical class 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920002620 polyvinyl fluoride Polymers 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- KOWVWXQNQNCRRS-UHFFFAOYSA-N tris(2,4-dimethylphenyl) phosphate Chemical compound CC1=CC(C)=CC=C1OP(=O)(OC=1C(=CC(C)=CC=1)C)OC1=CC=C(C)C=C1C KOWVWXQNQNCRRS-UHFFFAOYSA-N 0.000 description 1
- WTLBZVNBAKMVDP-UHFFFAOYSA-N tris(2-butoxyethyl) phosphate Chemical compound CCCCOCCOP(=O)(OCCOCCCC)OCCOCCCC WTLBZVNBAKMVDP-UHFFFAOYSA-N 0.000 description 1
- HQUQLFOMPYWACS-UHFFFAOYSA-N tris(2-chloroethyl) phosphate Chemical compound ClCCOP(=O)(OCCCl)OCCCl HQUQLFOMPYWACS-UHFFFAOYSA-N 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/032—Optical fibres with cladding with or without a coating with non solid core or cladding
Landscapes
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は光伝送ホースに関し、詳しくは該ホースにお
ける媒体が液状または半固体状のリン酸エステル類であ
る光伝送ホースに関し、主に光通信、内視鏡等のイメー
ジガイド、紫外線、可視光線あるいは赤外線等の各種波
長光のライトガイド、海洋牧場、野菜工場、都市マンシ
ョンの太陽光利用システムにおける光伝送に利用される
ものである。
〔従来技術及び解決すべき問題点〕
各撓性中空管状体の内部に媒体として液状のコア材を
充填した従来の溶液型光伝送ホースの基本構造は、円筒
状の可撓性管状体１（本発明による光伝送ホースの一部
破断縦断面に示す添附図面の１に相当する。以下同じ）
の内部に、同管状体より屈折率の高い液状のコア材２が
充填されており、可撓性管状体１の両端開口部には窓材
３が嵌合されて液状のコア材２を閉塞している。
この窓材３は円筒状の透明体で、入射光のガイドおよ
び適性な光放出を行なうなどの光学的作用を果たす。
可撓性中空管状体は樹脂製品であるため、透湿性を完
全に排除することはできない。高温、高湿環境例えば海
水中での使用においては、管状体の管壁を介して外部の
湿分がきわめて序々にではあるが内部に侵入する。この
ためコア材内部またはクラッド壁に水滴が析出して散乱
点を形成するため、光伝送性性能が損われるという問題
点が存在する。
さらに、光伝送ホースを化学プラント、危険物倉庫、
坑道等の照明または危険作業の手許照明等の防爆性が重
用視される分野に使用する際には下記の如き問題が存在
する。
（１） 熱による膨れ、破裂等の障害で、光伝送ホース
の性能が損われないこと。
（２） それ自体が不燃性または難燃性であること。
すなわち、上記の分野においては上記の要件を満たす
必要があるが、未だそのような光伝送ホースは見出され
ていない。
〔問題点を解決するための手段〕
上記の観点から、本発明者等は鋭意研究を重ねた結
果、リン酸エステル類を使用することにより、上記の諸
問題が解決されることを見出した。
本発明による光伝送ホースの基本構造を示す添附図面
において、１は可撓性中空管状体、２は液状または半固
体状のコア材、３は窓材、４は末端締結具である。
コア材２を内部に保持する可撓性中空管状体１の材料
は、伝送光の波長に対する屈折率n2がコア材の屈折率n1
より小さいことが望ましい。
しかし、このことは必ずしも管状体１の全厚さ方向に
わたって必要ではなく、コア材２に接する内壁の性質が
上記条件を満足すればよい。
可撓性中空管状体の材質としてはフッ素樹脂からな
り、具体的にはポリテトラフルオロエチレン、ポリ弗化
ビニル、ポリ弗化ビニリデン、ポリモノクロルトリフル
オロエチレン、四弗化エチレン−六弗化プロピレン重合
体、四弗化エチレン−パーフロロアルコキシエチレン共
重合体、四弗化エチレン−エチレン共重合体等があげら
る。
コア材２は下記一般式（Ｉ）〜（III）のリン酸エス
テル類である。
式（Ｉ）〜（III）において、X1,X2およびX3はそれぞ
れ水素、脂肪族基、脂環族基、芳香族基、またはこれら
基に付着した水素原子をハロゲン元素で一部置換した基
等を示し、ｎは整数である。
具体的にはトリス・クロロエチルホスヘート、ヘリス
・クロロプロピルホスヘート、トリス・ジクロロプロピ
ルホスヘート、トリ−２−エチルヘキシルホスヘート、
トリブトキシエチルホスヘート、トリクレジルホスヘー
ト、トリキシレニルホスヘート、キシレニルジフェニル
ホスヘート、２−エチルヘキシルジフェニルホスヘート
等があげられ、さらにはこれらの混合物の利用も可能で
ある。
窓材３はコア材を可撓性中空管状体内部に封入する働
きとともに、光を入出力する働きを有する。
窓材としては具体的には石英、クラウン硝子、フリン
ト硝子、カルコゲナイト硝子、サファイヤ、水晶、ポリ
カーボネート、メタクリル系樹脂、ポリスチレン樹脂等
があげられる。
末端締結法としては、ホースバンド締結、ワイヤー素
線による巻き上げ、スリーブ、Ｏ−リング、パッキン等
を介しての締め付け等のほか、硬化性樹脂、無機セメン
ト、可融合金等を用いて固める方法を使用される。
なお、図示していないが、光伝送ホースを外傷、高
温、高湿から保護する目的あるいはホースの曲げによる
キンク発生防止の目的で、可撓性中空管状体の外周に被
覆層を設けることがあり、被覆層としては金属、プラス
チック蛇腹管、ラセン状スプリング、織布、補強層入り
ゴム等が用いられる。上述のようにリン酸エステルをコ
ア材２として用いたことにより、可撓性中級管状体１の
管壁を介して外部から徐々に侵入した湿分によりコア材
内部または壁部に水滴が析出し、これが散乱点を形成し
て光伝送機能へ支障を与えることを解消することができ
る。
これにより、水中あるいは高温、高湿条件下での使用
が可能となり、また、使用時の熱による膨れや破裂が有
効に防止され防爆性の要求さねる場所への適用に好適な
ものになっている。
〔実施例〕
以下に実施例および比較例を示し、本発明をさらに具
体的に説明する。
実施例
内径８φ、外径９φ、長さ3mの四弗化エチレン−六弗
化プロピレン共重合体の可撓性中空状体にトリス・クロ
ロエチルホスヘートを充填した後、管状体の両端を９φ
×50mmの石英ロッドで栓をし、両末端部分をさらに針金
でしばった。
この光伝送ホースを湿熱オーブン（50℃、95％R.H.）
中に１週間連して放置したが、光伝送性能は維持され
た。
比較例
実施例と同様にして、コア材に流動パラフィンを使用
したが、この場合は光伝送性能が著しく低下した。Description: FIELD OF THE INVENTION The present invention relates to an optical transmission hose, and more particularly to an optical transmission hose in which the medium in the hose is a liquid or semi-solid phosphate ester, and is mainly concerned with optical communication. , Image guides such as endoscopes, light guides of various wavelengths such as ultraviolet light, visible light or infrared light, and light transmission in a solar utilization system of marine ranches, vegetable factories, and city apartments. [PRIOR ART AND PROBLEMS TO BE SOLVED] The basic structure of a conventional solution-type optical transmission hose in which each flexible hollow tubular body is filled with a liquid core material as a medium is a cylindrical flexible tubular body 1 ( The optical transmission hose according to the present invention corresponds to the attached drawing 1 shown in a partially broken longitudinal section.
Is filled with a liquid core material 2 having a higher refractive index than that of the tubular body, and window members 3 are fitted into both ends of the flexible tubular body 1 to close the liquid core material 2. doing. The window member 3 is a cylindrical transparent body, and performs optical functions such as guiding incident light and appropriately emitting light. Since the flexible hollow tubular body is a resin product, moisture permeability cannot be completely excluded. In a high-temperature, high-humidity environment, for example, in seawater, external moisture penetrates very gradually into the inside through the tubular wall of the tubular body. For this reason, water droplets precipitate inside the core material or on the clad wall to form a scattering point, and there is a problem that the light transmission performance is impaired. In addition, optical transmission hoses can be used in chemical plants, dangerous goods warehouses,
The following problems exist when used in a field where explosion-proof property is regarded as important, such as lighting in a tunnel or hand lighting for dangerous work. (1) The performance of the optical transmission hose must not be impaired by swelling, rupture, etc. due to heat. (2) The material itself is nonflammable or nonflammable. That is, in the above field, it is necessary to satisfy the above requirements, but such an optical transmission hose has not yet been found. [Means for Solving the Problems] From the above viewpoints, the present inventors have conducted intensive studies and, as a result, have found that the above problems can be solved by using phosphate esters. In the attached drawings showing the basic structure of the optical transmission hose according to the present invention, 1 is a flexible hollow tubular body, 2 is a liquid or semi-solid core material, 3 is a window material, and 4 is a terminal fastener. The material of the flexible hollow tubular body 1 holding the core material 2 therein has a refractive index n 2 with respect to the wavelength of the transmitted light, the refractive index n 1 of the core material.
Desirably smaller. However, this is not necessarily required over the entire thickness direction of the tubular body 1 as long as the properties of the inner wall in contact with the core material 2 satisfy the above conditions. The material of the flexible hollow tubular body is made of a fluororesin, and specifically, polytetrafluoroethylene, polyvinyl fluoride, polyvinylidene fluoride, polymonochlorotrifluoroethylene, ethylene tetrafluoride-propylene hexafluoride copolymer. And a tetrafluoroethylene-perfluoroalkoxyethylene copolymer, a tetrafluoroethylene-ethylene copolymer and the like. The core material 2 is a phosphoric ester of the following general formulas (I) to (III). In the formulas (I) to (III), X 1 , X 2 and X 3 each represent hydrogen, an aliphatic group, an alicyclic group, an aromatic group, or a hydrogen atom attached to these groups partially substituted with a halogen element. And n is an integer. Specifically, tris chloroethyl phosphate, helices chloropropyl phosphate, tris dichloropropyl phosphate, tri-2-ethylhexyl phosphate,
Tributoxyethyl phosphate, tricresyl phosphate, trixylenyl phosphate, xylenyl diphenyl phosphate, 2-ethylhexyl diphenyl phosphate, and the like, and a mixture thereof can be used. The window material 3 has a function of enclosing the core material inside the flexible hollow tubular body and a function of inputting and outputting light. Specific examples of the window material include quartz, crown glass, flint glass, chalcogenite glass, sapphire, crystal, polycarbonate, methacrylic resin, and polystyrene resin. As the end fastening method, in addition to hose band fastening, winding with a wire strand, fastening via a sleeve, O-ring, packing, etc., a method of hardening using a hardening resin, inorganic cement, fusible metal, etc. used. Although not shown, a coating layer may be provided on the outer periphery of the flexible hollow tubular body for the purpose of protecting the optical transmission hose from damage, high temperature, and high humidity, or for preventing kink generation due to bending of the hose. As the coating layer, metal, plastic bellows tube, helical spring, woven fabric, rubber with a reinforcing layer, or the like is used. As described above, since the phosphate ester is used as the core material 2, water droplets are deposited on the inside or the wall of the core material due to moisture gradually entering from the outside through the tube wall of the flexible intermediate tubular body 1. This can prevent the formation of a scattering point and hindrance to the optical transmission function. As a result, it can be used under water or under high-temperature, high-humidity conditions, and can be effectively prevented from swelling or rupture due to heat during use, and is suitable for application to places requiring explosion-proof properties. I have. EXAMPLES Hereinafter, the present invention will be described more specifically with reference to Examples and Comparative Examples. Example After filling tris-chloroethyl phosphate into a flexible hollow body of ethylene tetrafluoride-hexafluoropropylene copolymer having an inner diameter of 8φ, an outer diameter of 9φ and a length of 3m, both ends of the tubular body were 9φ.
It was stoppered with a 50 mm quartz rod, and both ends were further tied with wire. Use this optical transmission hose in a moist heat oven (50 ° C, 95% RH)
The optical transmission performance was maintained for a week without any change. Comparative Example Liquid paraffin was used as the core material in the same manner as in the example, but in this case, the light transmission performance was significantly reduced.
【図面の簡単な説明】
添附図面は本発明による光伝送ホースの一部破断縦断面
図である。
１……可撓性中空管状体、２……コア材、３……窓材、
４……末端締結具。BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings are partially broken longitudinal sectional views of an optical transmission hose according to the present invention. 1 ... flexible hollow tubular body, 2 ... core material, 3 ... window material,
4 ... End fastener.
Claims (1)
高い屈折率を有する液状または半固体状のコア材を充填
し、該可撓性管状体の両端開口部を窓材で閉塞した光伝
送ホースにおいて、該可撓性管状体がフッ素樹脂で構成
され、コア材としてリン酸エステル類を使用することを
特徴とする光伝送ホース。(57) [Claims] A liquid or semi-solid core material having a refractive index higher than the refractive index of the flexible tubular body is filled in the flexible tubular body, and both ends of the flexible tubular body are closed with window materials. An optical transmission hose according to claim 1, wherein said flexible tubular body is made of fluororesin, and phosphates are used as a core material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62237276A JP2857391B2 (en) | 1987-09-24 | 1987-09-24 | Light transmission hose |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62237276A JP2857391B2 (en) | 1987-09-24 | 1987-09-24 | Light transmission hose |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6480911A JPS6480911A (en) | 1989-03-27 |
| JP2857391B2 true JP2857391B2 (en) | 1999-02-17 |
Family
ID=17012991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62237276A Expired - Fee Related JP2857391B2 (en) | 1987-09-24 | 1987-09-24 | Light transmission hose |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2857391B2 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AR205016A1 (en) * | 1974-02-11 | 1976-03-31 | Nath G | LIGHTING DEVICE WITH A FLEXIBLE LIGHT CONDUCTOR CONTAINING A FLEXIBLE TUBE |
| JPS5238580A (en) * | 1975-09-23 | 1977-03-25 | Toray Industries | Method of manufacture of piezoo electric membrane of high polymer |
| JPS57107502A (en) * | 1980-12-24 | 1982-07-05 | Mitsubishi Electric Corp | Electrically insulating oil |
| JPS58216302A (en) * | 1982-06-10 | 1983-12-16 | 日石三菱株式会社 | Flame resistant electrically insulating coil composition |
-
1987
- 1987-09-24 JP JP62237276A patent/JP2857391B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6480911A (en) | 1989-03-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |