JPH01123201A - Treatment of light scattering at end face - Google Patents
Treatment of light scattering at end faceInfo
- Publication number
- JPH01123201A JPH01123201A JP62280298A JP28029887A JPH01123201A JP H01123201 A JPH01123201 A JP H01123201A JP 62280298 A JP62280298 A JP 62280298A JP 28029887 A JP28029887 A JP 28029887A JP H01123201 A JPH01123201 A JP H01123201A
- Authority
- JP
- Japan
- Prior art keywords
- face
- optical fiber
- solvent
- plastic optical
- light scattering
- 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.)
- Granted
Links
- 238000000149 argon plasma sintering Methods 0.000 title abstract description 15
- 239000013308 plastic optical fiber Substances 0.000 claims abstract description 35
- 239000002904 solvent Substances 0.000 claims abstract description 30
- 239000013307 optical fiber Substances 0.000 claims abstract description 16
- 239000012298 atmosphere Substances 0.000 claims abstract description 7
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims abstract description 6
- 239000004926 polymethyl methacrylate Substances 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 17
- 238000009835 boiling Methods 0.000 claims description 4
- 230000008016 vaporization Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-M methacrylate group Chemical group C(C(=C)C)(=O)[O-] CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 claims description 2
- 238000001704 evaporation Methods 0.000 abstract 1
- 239000000835 fiber Substances 0.000 abstract 1
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 15
- 239000011521 glass Substances 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052736 halogen Inorganic materials 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000011120 plywood Substances 0.000 description 2
- 238000005488 sandblasting Methods 0.000 description 2
- -1 20W halogen Chemical class 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 235000019646 color tone Nutrition 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
Landscapes
- Light Guides In General And Applications Therefor (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明）ま、光ファイバデイスプレィ等に使用するプラ
スチック光ファイバの端面から出る光を広い角度から見
ることができるようにする為の光ファイバ端面の光散乱
処理方法に関する。[Detailed Description of the Invention] [Industrial Field of Application] The present invention) An optical fiber for making it possible to view the light emitted from the end face of a plastic optical fiber used in optical fiber displays, etc. from a wide angle. The present invention relates to a light scattering treatment method for an end face.
（従来の技術〕
プラスチック光ファイバを用いたサインデイスプレィ等
は色彩も豊かで色調も変化に冨み、表現力に富んでいる
。(Prior Art) Sign displays and the like using plastic optical fibers are rich in color, have a wide range of color tones, and are highly expressive.
近年、装飾用途にポリメチルメタクリレート系プラスチ
ックを芯として特殊なフッ素樹脂を鞘と子るステップイ
デソクス型のプラスチック光ファイバが利用されている
。In recent years, plastic optical fibers of the step idetics type, which have a core made of polymethyl methacrylate plastic and a sheath made of a special fluororesin, have been used for decorative purposes.
プラスチック光ファイバの出射側端面を研磨により平滑
に仕上げた時、端面から出た光を観察すると、受光角と
呼ばれる角度を超えたところで急に見えなくなる。プラ
スチック光ファイバでは、受光角は通常約６０° （光
軸からの角度はその半分の約３０°）である。When the output side end face of a plastic optical fiber is polished to a smooth finish, when observing the light emitted from the end face, it suddenly disappears when it exceeds an angle called the acceptance angle. For plastic optical fibers, the acceptance angle is usually about 60° (the angle from the optical axis is half that, about 30°).
プラスチック光ファイバを用いたサインデイスプレィ等
では、受光角を超えた広い角度から光を見ることが求め
られることが多い。これまでに幾つかの端面の光散乱加
工方法が知られている。In sign displays and the like using plastic optical fibers, it is often required to view light from a wide angle beyond the acceptance angle. Several methods of light scattering processing of end faces have been known so far.
例えば、■端面を紙やすりで擦過する方法、■サンドブ
ラスト処理方法、■光散乱塗料やガラスピーズ等を塗布
する方法、■凹凸のある熱板で加熱処理する方法等であ
る。For example, (1) a method of rubbing the end surface with sandpaper, (2) a method of sandblasting, (2) a method of applying a light scattering paint or glass beads, and (2) a method of heat treatment using a hot plate with irregularities.
しかし、これらの光散乱処理方法には次の問題点がある
。■端面を紙やすりで擦過する方法では、作業者の熟練
を要する上に、処理後に端面の汚れを除去する工程が必
要である。■サンドブラスト処理方法は工業的な方法で
あるが、大きな設備を必要とし、■と同様に処理後に端
面の汚れを取る工程が必要である。■光散乱塗料やガラ
スピーズ等を塗布する方法は、異物を加えるため、全体
の光量が減衰し暗（なる、■凹凸のある熱板で加熱処理
する方法は、作業者の熟練を必要として、端面部の直径
が光ファイバの直径より大きくなるので、加工の手順で
不都合が生じる場合もある。However, these light scattering processing methods have the following problems. (2) The method of scraping the end surface with sandpaper requires skill on the part of the operator and also requires a step to remove dirt from the end surface after treatment. (2) The sandblasting method is an industrial method, but it requires large equipment and, like (2), requires a step to remove dirt from the end surface after treatment. ■The method of applying light-scattering paint or glass beads, etc. adds foreign matter, which reduces the overall light intensity and makes it dark. Since the diameter of the end face portion is larger than the diameter of the optical fiber, inconveniences may occur in the processing procedure.
本発明者らは、これらの問題点を解決するため鋭意研究
した結果、端面を汚染せず、異物を付着することなく、
端面の光散乱性をコントロールできる本発明の方法に到
達した。As a result of intensive research in order to solve these problems, the inventors of the present invention have found that the end face is not contaminated and does not have foreign matter attached to it.
A method of the present invention has been achieved that allows control of the light scattering properties of the end face.
即ち、本発明は、ポリメチルメタクリレート系の芯を有
するプラスチック光ファイバの端面を処理するに当たり
、光ファイバの端面を、相対湿度１０％以上の雰囲気、
下で、１気圧下の沸点が６０℃以下の溶剤に１０秒以下
の時間接触させた後、溶剤を気化させることを特徴とす
る光ファイバ端面の処理方法に関するものである。That is, in the present invention, when processing the end face of a plastic optical fiber having a polymethyl methacrylate core, the end face of the optical fiber is placed in an atmosphere with a relative humidity of 10% or more,
The following relates to a method for treating an end face of an optical fiber, which comprises contacting with a solvent having a boiling point of 60° C. or less under 1 atmosphere for a period of 10 seconds or less, and then vaporizing the solvent.
プラスチック光ファイバの端面を溶剤に接触させる仕方
には、種々あり、特に限定しないが、浸漬、刷毛塗り、
スポンジ塗りなどがある。例えば第１図に示すように、
プラスチック光ファイバ１の端面２を、浅い水平な皿４
に入れた溶剤３の上方から垂直に０．５ｍｍ位浸漬する
ことにより接触させた後、取り出す、浸漬部の長さは、
特に限定しないが、見栄え等の点から、０．５ｍｍ位が
経験的に良い、又、第２図に示すように、プラスチック
光ファイバ１の端面２に溶剤を浸した刷毛５に接触させ
た後、離す等である。There are various ways to bring the end face of the plastic optical fiber into contact with the solvent, including, but not limited to, dipping, brushing,
There is also sponge painting. For example, as shown in Figure 1,
The end face 2 of the plastic optical fiber 1 is placed in a shallow horizontal dish 4.
The length of the immersed part is as follows:
Although not particularly limited, from the viewpoint of appearance etc., it has been empirically determined that a thickness of about 0.5 mm is good.Also, as shown in FIG. , release, etc.
溶剤としては、１気圧下の沸点が６０℃以下であれば良
く、その種類は限定今れないが、例えば、ジクロルメタ
ン、アセトン、酢酸エチル、ジエチルエーテル等揮発性
の高いものであることが必要である。１気圧下の沸点が
６０℃を超えると、光散乱効果が少なくなる。接触時間
は溶剤の種類にもよるが、１０秒を超えると、プラスチ
ック光ファイバが脆くなるなどの弊害が出る。The solvent may be one with a boiling point of 60°C or less at 1 atm, and the type of solvent is not limited at this time, but it must be highly volatile, such as dichloromethane, acetone, ethyl acetate, diethyl ether, etc. be. When the boiling point under 1 atmosphere exceeds 60°C, the light scattering effect decreases. The contact time depends on the type of solvent, but if it exceeds 10 seconds, problems such as the plastic optical fiber becoming brittle will occur.
驚くべきことに、溶剤処理後の乾燥雰囲気の相対湿度の
影響が大きく一１相対湿度１０％未満の乾燥雰囲気では
、端面の光散乱効果は出ない、恐らく溶剤がプラスチッ
ク光ファイバの端面を少し熔かしながら気化する時、気
化熱を奪い空気中の水分が凝結してその結果端面の状態
が思いがけない光散乱状態になるものであろう。Surprisingly, the influence of the relative humidity of the drying atmosphere after solvent treatment is large; in a dry atmosphere with a relative humidity of less than 10%, there is no light scattering effect on the end face, perhaps because the solvent slightly melts the end face of the plastic optical fiber. However, when it vaporizes, the heat of vaporization is taken away and the moisture in the air condenses, resulting in an unexpected light scattering condition at the end surface.
予めプラスチック光ファイバの端面部の直径がプラスチ
ック光ファイバの直径を上回らないように切断しておき
、それに溶剤処理を行うと、端面の寸法を実用上変化さ
せることなく端面の光散乱処理を施すことができる。By cutting the plastic optical fiber in advance so that the diameter of the end face does not exceed the diameter of the plastic optical fiber and treating it with a solvent, it is possible to perform light scattering treatment on the end face without practically changing the dimensions of the end face. Can be done.
又、予めプラスチック光ファイバの端面部を熱処理によ
りプラスチック光ファイバの直径より広げておき、それ
に溶剤処理を行うと、先端部が大きく、かつ、均一に光
散乱する端面を作ること−ができる。Furthermore, by heat-treating the end face of the plastic optical fiber in advance to make it wider than the diameter of the plastic optical fiber, and then treating it with a solvent, it is possible to create an end face that has a large tip and uniformly scatters light.
以下に実施例を示す。 Examples are shown below.
実施例１
ポリメチルメタクリレート系プラスチック光ファイバと
して直径ＩＩＩＩＩ１１の旭化成工業■製ルミナスＬＢ
１０００を２ｍ用い、溶剤としてジクロルメタンを用
い、２５℃、相対湿度５８％の室内で、プラスチック光
ファイバの両方の端面をカミソリを用いてほぼ垂直に切
断した。ガラス製シャーレにジクロルメタンを５１１Ｉ
ｍの深さまで入れ、プラスチック光ファイバの一方の端
面を約０．５ｍｓ 浸漬させ、２秒後に取り出し溶剤を
気化させた。溶剤に接触した端面部分は白くなっていた
。Example 1 As a polymethyl methacrylate plastic optical fiber, Luminous LB manufactured by Asahi Kasei Corporation with a diameter III11
Both end faces of the plastic optical fiber were cut almost perpendicularly using a razor in a room at 25° C. and 58% relative humidity using dichloromethane as a solvent. 511I of dichloromethane in a glass petri dish
One end of the plastic optical fiber was immersed for about 0.5 ms, and after 2 seconds it was taken out and the solvent was vaporized. The end surface that came into contact with the solvent turned white.
２０Ｗの反射鏡付きハロゲンランプを光源として反射鏡
の端から１０ｃｍのところに、光量の大きい中央部にプ
ラスチック光ファイバの他方の端面をランプに向けてセ
ットした。溶剤で光散乱処理した面から５ｍの位置で観
察したところ、プラスチック光ファイバの光軸からほぼ
９０’の角度でも端面の光を見ることが出来た。A 20 W halogen lamp with a reflector was used as a light source, and a plastic optical fiber was set at a distance of 10 cm from the end of the reflector, with the other end face of the plastic optical fiber facing the lamp in the center where the amount of light was large. When observed at a position 5 m from the surface treated with light scattering with a solvent, light from the end face could be seen even at an angle of approximately 90' from the optical axis of the plastic optical fiber.
実施例２．３ 比較例
第１表に示す溶剤を用いた以外は、実施例１と同じ条件
で溶剤処理を実施した。Example 2.3 Comparative Example Solvent treatment was carried out under the same conditions as in Example 1, except that the solvents shown in Table 1 were used.
溶剤処理した光ファイバを、１０１ＩＩｌｌピフチで基
盤の目状に垂直に１．２１１ＩＩ＋径の穴を開けた１０
ｍｍ厚みの合板に、光ファイバの処理端面が５１１Ｉ１
１程度合板面より突き出るように、４本ずつセットした
。更に光ファイバの他方の端面を、良く切れるカミソリ
でカントし、この各光ファイバのカット端面を纏めて、
光源である２０Ｗの反射鏡付きハロゲンランプの中央部
で、反射鏡の端から１０ｃｍ＋の所に固定し、発光側の
光ファイバの光軸から０°及び８０°の角度から、明る
さの比較を行った。A hole of 1.211II+ diameter was drilled perpendicularly to the grain shape of the substrate using a 101IIll pifter in a solvent-treated optical fiber.
The processed end face of the optical fiber is 511I1 on the mm-thick plywood.
I set four of each so that they protruded about one inch from the plywood surface. Furthermore, the other end face of the optical fiber is canted with a sharp razor, and the cut end faces of each optical fiber are put together.
At the center of the 20W halogen lamp with a reflector, which is the light source, the brightness was compared from angles of 0° and 80° from the optical axis of the optical fiber on the light emitting side, fixed 10cm+ from the end of the reflector. went.
溶剤の種類及び結果を第１表に示す。The types of solvents and results are shown in Table 1.
第１表
実施例４
ポリメチルメタクリレート系プラスチック光ファイバと
して直径０．７５ｍｍのルミナスＬＢ ７５０ （商品
名、旭化成工業■製）を２ｍ、溶剤としてジクロルメタ
ンを用い、２５℃、相対湿度７５％の室内で、プラスチ
ック光ファイバの両方の端面をカミソリを用いてほぼ垂
直に切断した後、１３０℃に調整した熱板により光ファ
イバの端面の直径を最初の０゜７５ａ＋ｍから１．５ｍ
ｍまで広げた。ガラス製シャーレにジクロルメタンを５
ＩＩＩＩ１１の深さまで入れ、プラスチック光ファイバ
の一方の端面を約０．５＋ｖ＋ ｉｌ！潰させ、２秒後
に取り出し溶剤を気化させた。ｆ４剤に接触した端面部
分は白くなっていた。Table 1 Example 4 A polymethyl methacrylate plastic optical fiber having a diameter of 0.75 mm and a length of 2 m of Luminous LB 750 (trade name, manufactured by Asahi Kasei Kogyo ■) was used in a room at 25°C and a relative humidity of 75% using dichloromethane as a solvent. After cutting both end faces of the plastic optical fiber almost vertically using a razor, the diameter of the end face of the optical fiber was adjusted from the initial 0°75a+m to 1.5m using a hot plate adjusted to 130°C.
Expanded to m. 5 dichloromethane in a glass petri dish
Insert the plastic optical fiber to a depth of approximately 0.5 + v + il! It was crushed and taken out after 2 seconds to allow the solvent to evaporate. The end portion that came into contact with the f4 agent turned white.
２０Ｗの反射鏡付きハロゲンランプを光源として反射鏡
の端からｌｏｃａｗＯ所に、光量の大きい中央部にプラ
スチック光ファイバの他方の端面をランプに向けてセッ
トした。溶剤で光散乱処理した面から５ｍの位置から観
察したところ、プラスチック光ファイバの光軸からほぼ
９０°の角度でも、直径を１．５ｍｍに広げた端面の光
を見ることができた。A 20 W halogen lamp with a reflector was used as a light source, and a plastic optical fiber was set at a location locawO from the end of the reflector, with the other end face of the plastic optical fiber facing the lamp in the center where the amount of light was large. When observed from a position 5 m from the surface treated with light scattering with a solvent, light from the end face expanded to 1.5 mm in diameter could be seen even at an angle of approximately 90° from the optical axis of the plastic optical fiber.
本発明の方法により、プラスチック光ファイバの端面の
光散乱処理が容易に迅速に均一にできるようになった。By the method of the present invention, the light scattering treatment on the end face of a plastic optical fiber can be easily and quickly made uniform.
又、溶剤を必要に応じて選定することにより散乱の程度
をある程度任意にコントロールすることができるように
なった。Furthermore, by selecting a solvent as necessary, it has become possible to arbitrarily control the degree of scattering to some extent.
第１図及び第２図は、本発明の端面処理法の例を説明す
ための断面図である。
１・・・プラスチック光ファイバ
２・・・プラスチック光ファイバの端面３・・・溶剤
４・・・皿
５・・・筆
特許出願人 旭化成工業株式会社1 and 2 are cross-sectional views for explaining an example of the end face treatment method of the present invention. 1...Plastic optical fiber 2...End face of plastic optical fiber 3...Solvent 4...Dish 5...Brush patent applicant Asahi Kasei Corporation
Claims (3)
チック光ファイバの端面を処理するに当たり、光ファイ
バの端面を、相対湿度１０％以上の雰囲気下で、１気圧
下の沸点が６０℃以下の溶剤に１０秒以下の時間接触さ
せた後、溶剤を気化させることを特徴とする光ファイバ
端面の処理方法。(1) When treating the end face of a plastic optical fiber with a polymethyl methacrylate core, the end face of the optical fiber is soaked in a solvent with a boiling point of 60°C or less at 1 atm in an atmosphere with a relative humidity of 10% or more for 10 minutes. 1. A method for treating an end face of an optical fiber, which comprises vaporizing a solvent after contacting the end face for a period of seconds or less.
バの直径を上回らないように予め切断されたものである
特許請求の範囲第１項記載の方法。(2) The method according to claim 1, wherein the treated end face of the optical fiber is cut in advance so as not to exceed the diameter of the plastic optical fiber.
スチック光ファイバの直径より広げられているものであ
る特許請求の範囲第１項記載の方法。(3) The method according to claim 1, wherein the treated end face of the optical fiber is made wider than the diameter of the plastic optical fiber by heat treatment in advance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62280298A JP2565356B2 (en) | 1987-11-07 | 1987-11-07 | Light scattering edge treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62280298A JP2565356B2 (en) | 1987-11-07 | 1987-11-07 | Light scattering edge treatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01123201A true JPH01123201A (en) | 1989-05-16 |
| JP2565356B2 JP2565356B2 (en) | 1996-12-18 |
Family
ID=17623035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62280298A Expired - Lifetime JP2565356B2 (en) | 1987-11-07 | 1987-11-07 | Light scattering edge treatment method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2565356B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0503071A1 (en) * | 1990-09-04 | 1992-09-16 | Ohno Research And Development Laboratories Co., Ltd. | Plastic optical member having light diffusing layer on surface, and light quantity control member |
| EP0862070A1 (en) * | 1997-02-28 | 1998-09-02 | Asahi Glass Company Ltd. | Method for processing plastic optical fiber |
| EP1063543A1 (en) * | 1999-06-25 | 2000-12-27 | Lucent Technologies Inc. | Device for smoothing of optical fiber ends using a solvent liner and surface tension |
-
1987
- 1987-11-07 JP JP62280298A patent/JP2565356B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0503071A1 (en) * | 1990-09-04 | 1992-09-16 | Ohno Research And Development Laboratories Co., Ltd. | Plastic optical member having light diffusing layer on surface, and light quantity control member |
| EP0862070A1 (en) * | 1997-02-28 | 1998-09-02 | Asahi Glass Company Ltd. | Method for processing plastic optical fiber |
| EP1063543A1 (en) * | 1999-06-25 | 2000-12-27 | Lucent Technologies Inc. | Device for smoothing of optical fiber ends using a solvent liner and surface tension |
| US6500353B1 (en) | 1999-06-25 | 2002-12-31 | Fitel Usa Corp. | Disposable device for end finishing of plastic optical fiber |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2565356B2 (en) | 1996-12-18 |
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