JPH0317284Y2 - - Google Patents
Info
- Publication number
- JPH0317284Y2 JPH0317284Y2 JP18835680U JP18835680U JPH0317284Y2 JP H0317284 Y2 JPH0317284 Y2 JP H0317284Y2 JP 18835680 U JP18835680 U JP 18835680U JP 18835680 U JP18835680 U JP 18835680U JP H0317284 Y2 JPH0317284 Y2 JP H0317284Y2
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- sleeve
- outer periphery
- protective sleeve
- spacer sleeve
- 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
Links
- 239000013307 optical fiber Substances 0.000 claims description 66
- 125000006850 spacer group Chemical group 0.000 claims description 27
- 230000001681 protective effect Effects 0.000 claims description 22
- 239000011521 glass Substances 0.000 claims description 5
- 239000000835 fiber Substances 0.000 description 12
- 239000000853 adhesive Substances 0.000 description 9
- 230000001070 adhesive effect Effects 0.000 description 9
- 239000003822 epoxy resin Substances 0.000 description 4
- 229920000647 polyepoxide Polymers 0.000 description 4
- 239000010453 quartz Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 238000005253 cladding Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229920002050 silicone resin Polymers 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Description
【考案の詳細な説明】
本考案は光フアイバの端末部、特に高エネルギ
ー光ビームの入射側の端末部に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an end portion of an optical fiber, particularly an end portion on the input side of a high-energy light beam.
レーザ光等の高エネルギー光ビームの伝送に用
いる光フアイバの入射側の端末部は高温に加熱さ
れるので耐熱性を考慮する必要がある。第３図は
一般に用いられている光フアイバの端末部を示す
断面図である。図中、Ｆは光フアイバ、F1はフ
アイバジヤケツト、５１はガラス製のスペーサス
リーブであつて、スペーサスリーブ５１の軸長方
向の長さはフアイバジヤケツトF1から露出させ
た光フアイバＦの長さに等しく形成されており、
光フアイバＦの外周にエポキシ系樹脂接着剤５３
を用いてこれと同心状に固定されている。５２は
ステンレス鋼製の保護スリーブであつて、その一
端面を光フアイバＦ及びスペーサスリーブ５１の
各端面と面一にしてエポキシ系樹脂接着剤５４に
てスペーサスリーブ５１の外周にスペーサスリー
ブ５１及び光フアイバＦと同心状に固定されてい
る。そしてこのように構成された光フアイバＦの
端末部にレンズＬを通じてレーザ光が入射され
る。 Since the end portion on the input side of an optical fiber used for transmitting a high-energy light beam such as a laser beam is heated to a high temperature, heat resistance must be taken into consideration. FIG. 3 is a sectional view showing the end portion of a commonly used optical fiber. In the figure, F is an optical fiber, F1 is a fiber jacket, and 51 is a glass spacer sleeve.The axial length of the spacer sleeve 51 is the length of the optical fiber F exposed from the fiber jacket F1 . formed equal in length,
Epoxy resin adhesive 53 is applied to the outer periphery of the optical fiber F.
It is fixed concentrically with this using. Reference numeral 52 denotes a stainless steel protective sleeve, one end of which is flush with each end of the optical fiber F and the spacer sleeve 51, and the spacer sleeve 51 and the optical fiber are attached to the outer periphery of the spacer sleeve 51 using an epoxy resin adhesive 54. It is fixed concentrically with fiber F. Laser light is then incident on the end portion of the optical fiber F configured in this manner through the lens L.
しかし上述の如き光フアイバの端末部が耐え得
る光源出力はせいぜい1W以下であつて、出力が
これを越える場合にはエネルギー密度が高くなる
光フアイバＦの端末部が高温となり、光フアイバ
Ｆ周囲の接着剤５３，５４が溶融又は燃焼し、極
めて危険であつた。 However, the light source output that the end of the optical fiber as mentioned above can withstand is at most 1W or less, and if the output exceeds this, the end of the optical fiber F, where the energy density is high, becomes high temperature, and the surrounding area of the optical fiber F becomes hot. The adhesives 53 and 54 melted or burned, which was extremely dangerous.
このため従来にあつては高出力の光の入射に耐
え得るよう第４図に示す如き光フアイバの端末部
が採用されている。第４図は従来における高出力
用の光フアイバの端末部を示す断面図であり、図
中Ｆは光フアイバ、F1はナイロン製のフアイバ
ジヤケツト、６１は不燃物、例えばガラス製又は
ステンレス製のスペーサスリーブ、６２はステン
レス鋼製の保護スリーブを示している。 For this reason, in the past, an end portion of an optical fiber as shown in FIG. 4 has been employed to withstand the incidence of high-output light. FIG. 4 is a sectional view showing the terminal part of a conventional high-output optical fiber, in which F is an optical fiber, F1 is a nylon fiber jacket, and 61 is a nonflammable material, such as glass or stainless steel. The spacer sleeve 62 indicates a protective sleeve made of stainless steel.
保護スリーブ６２はその先端から３〜５mm程度
の光フアイバＦの端末部を突き出させた状態でス
ペーサスリーブ６１の外周及び光フアイバＦの外
周との間に充填介在させた接着剤６４，６５を介
して光フアイバＦ、スペーサスリーブ６１と同心
状に固定されている。この保護スリーブ６２の端
面から適長突き出して位置する光フアイバ端面に
レンズＬを介して光を入射せしめ光フアイバＦの
端末部が高温となつた場合においても接着剤の燃
焼等の不都合を解消するようにしてある。しかし
このような構造では光フアイバＦの端末部が裸の
まま保護スリーブ６２から突き出した状態で位置
するために、この端末部を破損し易く、端末部の
取扱いに注意を要し、作業性が悪くなる欠点があ
つた。 The protective sleeve 62 is inserted between the outer periphery of the spacer sleeve 61 and the outer periphery of the optical fiber F with adhesives 64 and 65 interposed between the outer periphery of the spacer sleeve 61 and the outer periphery of the optical fiber F, with the end portion of the optical fiber F protruding approximately 3 to 5 mm from the tip thereof. The optical fiber F and the spacer sleeve 61 are fixed concentrically. Light is incident through the lens L onto the end face of the optical fiber, which protrudes an appropriate length from the end face of the protective sleeve 62, thereby eliminating inconveniences such as burning of adhesive even when the end of the optical fiber F reaches a high temperature. It's like this. However, in such a structure, the end portion of the optical fiber F is located in a bare state protruding from the protective sleeve 62, so this end portion is easily damaged, the end portion must be handled with care, and workability is reduced. There was a flaw that made it worse.
本考案はかかる事情に鑑みなされたものであつ
て、その目的とするところは、高エネルギーの光
ビームを入射すべき光フアイバ端部の被覆を除去
した部分に、該光フアイバの端面よりも後方に位
置させて耐熱性スペーサスリーブを外嵌し、かつ
スペーサスリーブの外周には、端面を光フアイバ
の端面と一致させ、又は光フアイバの端面よりも
前方に位置させて耐熱性保護スリーブを外嵌し、
光フアイバの端末の外周と保護スリープの内周と
の間には、スペーサスリーブが後方に位置した分
だけ該端末に接する部材の熱的変化を防止すべき
長さの空間部を設け、かつ、該空間部の光フアイ
バガラス部分を露出させ、大エネルギーの入射に
より光フアイバの端末部が高温となつても周辺部
材が燃焼するが如き不都合を解消すると共に、光
フアイバの端末部を保護スリーブ内に位置させる
ことによつて端末部の折損等の事故も併せて防止
し得るようにした光フアイバの端末部を提供する
にある。 The present invention was devised in view of the above circumstances, and its purpose is to inject a beam into the uncoated portion of the end of the optical fiber into which a high-energy light beam is to be incident, rearward from the end face of the optical fiber. A heat-resistant spacer sleeve is fitted onto the outer periphery of the spacer sleeve, and a heat-resistant protective sleeve is fitted around the outer periphery of the spacer sleeve with its end surface aligned with the end surface of the optical fiber or positioned in front of the end surface of the optical fiber. death,
A space is provided between the outer periphery of the end of the optical fiber and the inner periphery of the protective sleeve, the length of which is sufficient to prevent thermal changes in the member in contact with the end due to the rearward position of the spacer sleeve, and By exposing the glass portion of the optical fiber in the space, even if the end portion of the optical fiber becomes high temperature due to the incidence of large energy, the inconvenience such as burning of the surrounding parts can be eliminated, and the end portion of the optical fiber is placed inside the protective sleeve. It is an object of the present invention to provide an optical fiber terminal part which can also prevent accidents such as breakage of the terminal part by locating the terminal part.
以下本考案をその実施例を示す図面に基いて具
体的に説明する。第１図は本考案に係る光フアイ
バの端末部（以下単に本案端末部という）を示す
略示断面図、第２図は第１図の−線方向から
みた端面図であり、図中Ｆは光フアイバ、F1は
フアイバジヤケツト、１はスペーサスリーブ、２
は保護スリーブを示している。光フアイバＦは石
英又は石英を主成分とする光フアイバで、直径
200〜500μmの大口径コアを中心にしてその外周
にクラツド層、サポート層を有し、サポート層の
外周には数μmの厚さで光フアイバ補強のための
シリコン樹脂製のプリコートが施され、更にこの
外周にナイロン製のフアイバジヤケツトF1が被
覆形成されている。光フアイバＦはフアイバジヤ
ケツトF1を所要長切り取ることによつて、端部
を適長にわたりフアイバジヤケツトF1から露出
せしめられており、この露出されている部分の外
周にスペーサスリーブ１が外嵌され、更にこの外
周に保護スリーブ２が外嵌されている。スペーサ
スリーブ１はガラス製であつて、フアイバジヤケ
ツトF1から露出されている光フアイバＦの長さ
よりも所要寸法（通常３mm程度）短かく形成され
ている。そしてこのスペーサスリーブ１はエポキ
シ系樹脂の接着剤３を用いて光フアイバＦにこれ
と同心状をなすように一体的に固定されている。
保護スリーブ２はステンレス鋼製であつて、フア
イバジヤケツトF1から露出させた光フアイバＦ
の長さよりも十分大きい長さを有する。そしてこ
の保護スリーブ２はその先端面を光フアイバF1
の端面と面一に一致させるか、又は光フアイバＦ
の端面よりも突き出した状態で、スペーサスリー
ブ１の外周面との間に介在させたエポキシ系樹脂
の接着剤４にてスペーサスリーブ１と同心状をな
すように外嵌固定されている。また保護スリーブ
２の基端部はこの基端部外周からジヤケツトF1
の外周にわたつて外嵌した熱収縮性チユーブ５の
熱収縮によつてフアイバジヤケツトF1に固定さ
れている。 Hereinafter, the present invention will be specifically explained based on drawings showing embodiments thereof. FIG. 1 is a schematic cross-sectional view showing the terminal portion of the optical fiber according to the present invention (hereinafter simply referred to as the terminal portion of the present invention), and FIG. 2 is an end view as seen from the - line direction in FIG. Optical fiber, F 1 is fiber jacket, 1 is spacer sleeve, 2
indicates a protective sleeve. Optical fiber F is an optical fiber mainly composed of quartz or quartz, and has a diameter of
It has a large-diameter core of 200 to 500 μm, and a cladding layer and a support layer around its outer periphery.A silicone resin pre-coat with a thickness of several μm is applied to the outer periphery of the support layer to reinforce the optical fiber. Furthermore, a fiber jacket F1 made of nylon is formed to cover the outer periphery. By cutting the fiber jacket F1 to a required length, the optical fiber F is exposed from the fiber jacket F1 over an appropriate length at its end, and a spacer sleeve 1 is attached to the outer periphery of this exposed portion. A protective sleeve 2 is further fitted around the outer periphery. The spacer sleeve 1 is made of glass and is formed to have a required dimension (usually about 3 mm) shorter than the length of the optical fiber F exposed from the fiber jacket F1 . This spacer sleeve 1 is integrally fixed to the optical fiber F using an epoxy resin adhesive 3 so as to be concentric therewith.
The protective sleeve 2 is made of stainless steel and covers the optical fiber F exposed from the fiber jacket F1 .
It has a length that is sufficiently larger than the length of. This protective sleeve 2 has its tip end connected to the optical fiber F 1
or align it flush with the end face of the optical fiber F.
It is externally fitted and fixed concentrically with the spacer sleeve 1 with an epoxy resin adhesive 4 interposed between the spacer sleeve 1 and the outer peripheral surface of the spacer sleeve 1 so as to protrude beyond the end surface of the spacer sleeve 1 . In addition, the proximal end of the protective sleeve 2 is connected to the jacket F 1 from the outer periphery of this proximal end.
It is fixed to the fiber jacket F1 by heat shrinking of a heat shrinkable tube 5 which is fitted over the outer circumference of the fiber jacket F1.
而してスペーサスリーブ１の先端面から突き出
されている適長の光フアイバF1の端部は保護ス
リーブ２の先端側において、保護スリーブ２との
間に空間部６を隔てて保護スリーブ２と同心状に
位置せしめられることとなる。なおスペーサスリ
ーブ１の先端面から突き出されている光フアイバ
F1の端部はシリコン樹脂製のプリコートを除去
されてコア、クラツド層、サポート層の３層から
なる裸の状態のままとしてある。Ｌはその集点を
光フアイバＦの端面上に一致させたレンズであつ
て、大エネルギーのレーザ光を集光して光フアイ
バＦの端面に入射せしめるようにしてある。 The end of the optical fiber F1 of an appropriate length protruding from the distal end surface of the spacer sleeve 1 is connected to the protective sleeve 2 on the distal end side of the protective sleeve 2, with a space 6 between the end and the protective sleeve 2. They will be placed concentrically. Note that the optical fiber protruding from the tip surface of the spacer sleeve 1
The silicone resin precoat was removed from the edge of F1 , leaving it in a bare state consisting of three layers: core, cladding layer, and support layer. L is a lens whose focusing point is aligned with the end face of the optical fiber F, and is designed to focus a high-energy laser beam and make it enter the end face of the optical fiber F.
かく構成された本案端末部にあつては、光フア
イバＦの端部において、高温にて燃焼する恐れの
あるシリコン樹脂製のプリコートを除去した状
態、即ち石英又はこれを主成分とするコア、クラ
ツド層、サポート層のみからなる３層構造の状態
で、しかも保護スリーブ２内にその内周面との間
に空間部６を隔てた状態で保護スリーブ２と同心
状に位置せしめられており、レンズＬを通して光
フアイバＦの端面に1Wから数百Ｗに至る高出力
の光が入射せしめられ、光フアイバＦの端部が高
温に加熱された場合においても、周囲に溶融さ
れ、或いは燃焼を生ずる物質がないから、従来の
光フアイバの端末部の如く接着剤が燃える等の危
険が防止され、また光フアイバＦの端部の周囲は
空間部６によつて断熱されているから、周辺部へ
の熱伝導も抑制され、周辺部材に対する熱影響も
極めて小さく、更に光フアイバ端部の折損等の事
故も防止し得ることとなる。 In the terminal portion of the present invention constructed in this manner, the end portion of the optical fiber F is in a state in which the precoat made of silicone resin, which may burn at high temperatures, is removed, that is, the core and cladding are made of quartz or mainly composed of quartz. The lens has a three-layer structure consisting only of a support layer and a support layer, and is positioned concentrically with the protective sleeve 2 with a space 6 separated from the inner peripheral surface of the protective sleeve 2. Even when high-output light ranging from 1 W to several hundred W is made incident on the end face of optical fiber F through L and the end of optical fiber F is heated to a high temperature, there are substances that will melt or cause combustion in the surrounding area. This prevents the risk of burning the adhesive, which occurs at the end of a conventional optical fiber, and since the end of the optical fiber F is insulated by the space 6, there is no risk of damage to the periphery. Heat conduction is also suppressed, thermal effects on surrounding members are extremely small, and accidents such as breakage of the optical fiber end can be prevented.
以上の如く本案端末部にあつては光フアイバ端
面に対し高出力の光が入射され、光フアイバ端末
部が高温に加熱されることとなつても、これによ
つて周辺部材が燃焼する等の危険が防止され、周
辺部材に対する熱影響の波及も抑制出来、また光
フアイバ端面は保護スリーブ内に位置するために
光フアイバ端部の折損等の事故も防止できて光フ
アイバ端末部の取扱いが容易となり、それだけ光
フアイバコード等の運搬、配設に際しての作業性
も向上するなど、本考案は優れた効果を奏するも
のである。 As mentioned above, in the case of the terminal part of the present invention, even if high-output light is incident on the end face of the optical fiber and the optical fiber terminal part is heated to a high temperature, this may cause combustion of surrounding members. This prevents danger and suppresses the spread of thermal effects to surrounding components. Also, since the end face of the optical fiber is located within the protective sleeve, accidents such as breakage of the optical fiber end can be prevented, making it easy to handle the optical fiber end. Therefore, the present invention has excellent effects, such as improving workability when transporting and arranging optical fiber cords, etc.
第１図は本案端末部を示す断面図、第２図は第
１図の−線による端面図、第３，４図は従来
の端末部を示す断面図である。
Ｆ……光フアイバ、F1……フアイバジヤケツ
ト、１……スペーサスリーブ、２……保護スリー
ブ、３，４……接着剤、６……空間部。
FIG. 1 is a sectional view showing the proposed terminal part, FIG. 2 is an end view taken along the line - - in FIG. 1, and FIGS. 3 and 4 are sectional views showing the conventional terminal part. F...Optical fiber, F1 ...Fiber jacket, 1...Spacer sleeve, 2...Protective sleeve, 3, 4...Adhesive, 6...Space portion.
Claims (1)
バ端部の被覆を除去した部分に、該光フアイバの
端面よりも後方に位置させて耐熱性スペーサスリ
ーブを外嵌し、かつスペーサスリーブの外周に
は、端面を光フアイバの端面と一致させ、又は光
フアイバの端面よりも前方に位置させて耐熱性保
護スリーブを外嵌し、光フアイバの端末の外周と
保護スリープの内周との間には、スペーサスリー
ブが後方に位置した分だけ該端末に接する部材の
熱的変化を防止すべき長さの空間部を設け、か
つ、該空間部の光フアイバはガラス部分が露出し
ていることを特徴とする光フアイバの端末部。 A heat-resistant spacer sleeve is fitted over the uncovered portion of the end of the optical fiber into which the high-energy light beam is to be incident, positioned behind the end surface of the optical fiber, and on the outer periphery of the spacer sleeve, A heat-resistant protective sleeve is fitted with the end surface aligned with the end surface of the optical fiber or positioned in front of the end surface of the optical fiber, and a spacer is provided between the outer periphery of the end of the optical fiber and the inner periphery of the protective sleeve. A space is provided with a length sufficient to prevent thermal changes in the member in contact with the terminal due to the rear position of the sleeve, and a glass portion of the optical fiber in the space is exposed. Optical fiber terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18835680U JPH0317284Y2 (en) | 1980-12-26 | 1980-12-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18835680U JPH0317284Y2 (en) | 1980-12-26 | 1980-12-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57110523U JPS57110523U (en) | 1982-07-08 |
| JPH0317284Y2 true JPH0317284Y2 (en) | 1991-04-12 |
Family
ID=29991859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18835680U Expired JPH0317284Y2 (en) | 1980-12-26 | 1980-12-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0317284Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8206041B2 (en) | 2008-03-18 | 2012-06-26 | Fujikura Ltd. | High power optical connector and optical fiber system using the same |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5923133U (en) * | 1982-08-04 | 1984-02-13 | 北陽電機株式会社 | Optical fiber photoelectric relay |
| JP2008275997A (en) * | 2007-05-01 | 2008-11-13 | Fujifilm Corp | Light guide member |
| WO2014192944A1 (en) * | 2013-05-30 | 2014-12-04 | 古河電気工業株式会社 | Semiconductor laser module |
| JP6656076B2 (en) | 2016-05-06 | 2020-03-04 | キヤノン株式会社 | Fiber structure and light source device |
-
1980
- 1980-12-26 JP JP18835680U patent/JPH0317284Y2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8206041B2 (en) | 2008-03-18 | 2012-06-26 | Fujikura Ltd. | High power optical connector and optical fiber system using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57110523U (en) | 1982-07-08 |
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