JPS5948720A - Optical fiber terminal for connection with fine photodetecting and light emitting element - Google Patents
Optical fiber terminal for connection with fine photodetecting and light emitting elementInfo
- Publication number
- JPS5948720A JPS5948720A JP15792982A JP15792982A JPS5948720A JP S5948720 A JPS5948720 A JP S5948720A JP 15792982 A JP15792982 A JP 15792982A JP 15792982 A JP15792982 A JP 15792982A JP S5948720 A JPS5948720 A JP S5948720A
- Authority
- JP
- Japan
- Prior art keywords
- lens
- optical fiber
- emitting element
- light
- refractive index
- 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
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
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4202—Packages, e.g. shape, construction, internal or external details for coupling an active element with fibres without intermediate optical elements, e.g. fibres with plane ends, fibres with shaped ends, bundles
- G02B6/4203—Optical features
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はＬ Ｅ Ｄ等の微小光源からの光を光伝送ファ
イバー内１／Ｉ９人したり、光伝送ファイバーからの出
Ω・Ｉ光を６＆小な受光素子に入光させる場合に有用な
光フアイバ一端子に関する。光フアイバー通信や光計測
制御システム等において、ＬＥＤ・半導体レーザーなど
微小な光源からの拡散出射光を光伝送ファイバー内に導
入する場合、オ乙図に示すように光ｉ １００ と光伝
送ファイバー１０／との間にレンズ１０．２を配置する
ことにより、光源からの拡散出射光をレンズ１０２で集
束させて光フアイバー１０／内に入れるようにしている
。[Detailed Description of the Invention] The present invention is capable of transmitting light from a minute light source such as an LED into an optical transmission fiber by 1/I, or by transmitting Ω/I light from an optical transmission fiber into a 6 & small light receiving element. The present invention relates to an optical fiber terminal useful for producing light. In optical fiber communications, optical measurement control systems, etc., when introducing diffused emitted light from a minute light source such as an LED or semiconductor laser into an optical transmission fiber, the light i 100 and the optical transmission fiber 10/ By disposing a lens 10.2 between the light source and the light source, the diffused emitted light from the light source is focused by the lens 102 and enters the optical fiber 10/.
また光ファイバー１０／からの拡散用ａ・Ｉ光を微小な
受光素子１００に入光させる場合も同様１１光学的接続
装置が使用される。Similarly, the optical connection device 11 is used when the diffused a/I light from the optical fiber 10/ is made to enter the minute light receiving element 100.
上記従来の受発光素子とファイバーとの接続方法では受
発光朱子とレンズの光１ｑ１１合ゼおよびレンズと光フ
ァイバーとの６１１芯合せｘ、ｖ 整作楽に加えて、レ
ンズと受発光素子との間の距離およびレンズと光ファ゛
イバ一端との間の距離を最適値に調整する作業が必要で
あり、装置の組み立てには非常に手間がかかるとともに
高度の熟練技術か必要であるきいう問題があった。In addition to the above-mentioned conventional connection method between the light receiving/emitting element and the fiber, the light 1q11 alignment between the light receiving/emitting satin and the lens, and the 611 alignment x, v between the lens and the optical fiber, the connection between the lens and the light receiving/emitting element is It is necessary to adjust the distance and the distance between the lens and one end of the optical fiber to the optimum value, and assembling the device is very time-consuming and requires highly skilled technology. .
本発明の目的は」−述の問題点を解決し、微小光源から
の拡散出射光を効率良く光フアイバー内に導入したりあ
るいは光ファイバーからの拡散出射光を効率良く受光素
子に入光させることができ、しかも組立て調整が容易な
光フアイバ一端子を提供することである。The purpose of the present invention is to solve the problems mentioned above and to efficiently introduce diffused emitted light from a minute light source into an optical fiber or to efficiently make diffused emitted light from an optical fiber enter a light receiving element. To provide an optical fiber terminal which can be easily assembled and adjusted.
上記の目的を達成するために本発明では、屈折率が中心
１１１ｉ−１：で最大で外周に向けて半径方向に放物状
に減少するような屈Ｊｌｒ率分（Ｉｉをもつ透明円柱体
からなる屈折率分布型レンズの長さを、レンズび、前記
レンズの一方の端面に光伝送ファイノ々−の’／：ｉａ
部を軸芯を合せて密接接続１．て光フアイバ一端子を構
成する。In order to achieve the above object, in the present invention, from a transparent cylindrical body having a refractive index of Jlr index (Ii) such that the refractive index is maximum at the center 111i-1 and decreases parabolically in the radial direction toward the outer periphery, The length of the refractive index gradient lens is 1/:ia.
Closely connect the parts by aligning their axes 1. constitute an optical fiber terminal.
−１−記構成によイ１ば１、屈折率分布型レンズの端面
前方に数ミリメートへの距離をおいてＬＥＤ素子などレ
ンズ径に庄べて充分に小さい光源を配置することにより
、光源から拡散出射した光線が屈折率分布型レンズの一
方の端面から入りレンズ内を外周に向けて進行した後、
内側に曲げられて他端面上で集束し、このレンズ面に接
続された光フアイバー内に人ＱＪする。According to the configuration described in -1-1, by arranging a sufficiently small light source such as an LED element at a distance of several millimeters in front of the end surface of the gradient index lens, it is possible to separate the light source from the light source. After the diffused and emitted light enters from one end face of the gradient index lens and travels inside the lens toward the outer periphery,
It is bent inward and focused on the other end surface, and the person QJ is placed inside the optical fiber connected to this lens surface.
このため、共通のコネクタースリーブの一方の開口に本
発明に係る端子を嵌合するとともに、微小光源を取りイ
」けた支持体を上記コネクタースリーブの他方の開口に
嵌合させるたけで極めて効率良くソ（：源からの発光光
重を光フアイバー内に導入することがてきる。Therefore, by simply fitting the terminal according to the present invention into one opening of a common connector sleeve and fitting the support body from which a minute light source has been removed into the other opening of the connector sleeve, an extremely efficient solution can be obtained. (: Light emitted from a source can be introduced into an optical fiber.
また尤ファイバーはｆｉ＋！折率分布型レンズの一方の
端面に当接させるた（」で光ｉＩｌ＋方向での位１トを
合せが行なえるため端子の絹、７ても非常に容易である
。Also, the fiber is fi+! Since it is brought into contact with one end surface of the gradient index lens, it is possible to align the position in the direction of the light II1+, so it is very easy to connect the terminal 7.
以Ｆ本発明を図面に示した実施例について詳細に、説明
する。Hereinafter, embodiments of the present invention shown in the drawings will be described in detail.
オ／図において／は本発明に係る光ファイバーＹｉＡｊ
了であり、後述する特定範囲のレンズ長Ｚを有する屈折
率分布型レンズ−〇一方の端面、２Ａに、光軸を一致さ
せた光ファイ、バー３の端面を密接させて接続している
。/ In the figure / indicates the optical fiber YiAj according to the present invention.
A gradient index lens having a lens length Z within a specific range, which will be described later - One end surface 2A is closely connected to the end surface of an optical fiber and bar 3 whose optical axes are aligned. .
屈折率分布型レンズコは両端面か光軸に直角な下行平面
の透明なガラスまたはプラス千ツクからなる円柱体であ
って、中心＠ｌから半径方向ｑｒの距頗におｉｊる屈折
率Ｎ（ｒ）が中心軸グー■−での屈折率ＮＯ、Ａを正の
ンビ数として
Ｎ （ｒ） −Ｎｏ （／ −／／、２ Ａｒ２ ）
、、、−、、、べ／）の式でほぼ表わされるｊＪ（吻状
の屈折率分布をもっている。A gradient index lens is a cylindrical body made of transparent glass or plastic with both end faces or a descending plane perpendicular to the optical axis, and has a refractive index N( r) is the refractive index NO at the central axis Goo, and A is a positive number N (r) −No (/ −//, 2 Ar2 )
It has a jJ (rostral refractive index distribution) approximately expressed by the equation: , , -, , Be/).
上記（１）式のような屈折率分布型レンズ内に人ｑ、ｌ
した光線（コサインカーブを描いてレンズ内を進行し、
その蛇子−ｆ周期Ｐは、
ｐ＝、２π／Ａ ・・・・・・・ （−２）となる。
（２）式におけるＡは（１）式における分布定数である
。There are people q and l inside the gradient index lens as shown in equation (1) above.
rays (proceeding inside the lens drawing a cosine curve,
The snake-f period P is p=, 2π/A (-2).
A in equation (2) is a distribution constant in equation (1).
そして本発明では、レンズ長２を、
７＝（／／ＶＰ十体）ｘｍ・・・・・・・（３）芥
α−０，０，！；Ｐ−０，ＳＰ 、 ｍは寄数に選定す
る。In the present invention, the lens length 2 is defined as 7=(//VP 10 bodies) x m (3) α-0,0,! ; P-0, SP, m are selected as arithmetical numbers.
（３）式のよう（でレンズ（−６ｚを選んだ場合、一方
のレンズ端面前方にｅの距離を隔ててｉ？／いた点光源
Ｓから発する光線乙がレンズ他ｉ：’ｉｆｊ １ｆＩｌ
、２Ａに集束する条件は、
Ｚ ＝ ／／ｖ’ｆｔａｎ−１（−ＮＯｖ’ｉｄ）
−・（Ｚ）とｔ「る。As shown in equation (3), if the lens (-6z is selected), the ray B emitted from the point light source S located at a distance of e in front of one lens end surface is the other lens i:'ifj 1fIl
, the condition to converge on 2A is Z = //v'ftan-1(-NOv'id)
-・(Z) and t'ru.
そして（３）式においてαの値がＯの場合はレンズの一
ノｊの’ｊ：：：而から光］１ｑ１１に平？）入射さセ
たソＣ−中かレンズ他端面に集束し、オ／図にお（する
ｅが無限大となり、またαが／Ｐの場合はｅがＯとなる
。In equation (3), if the value of α is O, then the value of 'j:::from light]1q11 of the lens no. ) The incident light is focused on the other end surface of the lens, and is shown in Figure 1. If e becomes infinite, and if α is /P, then e becomes O.
そして（３）式におけるαをｏ、ｏｓｐ〜０．３Ｐの範
囲内に選ぶことにより、直径が０．３ｍ１ｍ〜３ｍ／ｍ
の峡１９ｉ的な屈折率分布型レンズ！を使用すると受発
光素７′−５をレンズ端面に密着さぜる必要４「＜、［
１つコンパクトなコネクタースリーブ内において受発光
素子と本発明に係る光フアイバ一端子とを光学的結合す
ることかできる。By selecting α in equation (3) within the range of o, osp to 0.3P, the diameter can be set to 0.3m1m to 3m/m.
Nokyo 19i graded index lens! When using 4'<, [
The light receiving/emitting element and the optical fiber terminal according to the present invention can be optically coupled within one compact connector sleeve.
具体的数値例で示すと、中心ＩＩｊｌｔ上の屈折率Ｎｏ
か／乙００ 、 Ｘ／ｉ ＝ ０．３．２ｇ ｍｍ’−
］である屈折率分布型レンズを使用し、前述の（３）式
におｉするαを０．０７ Ｐ−０，，２／ Ｐ ０１）
範囲に選へはオ／図のａはＱ、 ３ ｍ ７ｍ −１７
ｍ／ｍの範囲内に納まる。To show a specific numerical example, the refractive index No. on the center IIjlt
KA/Otsu00, X/i = 0.3.2g mm'-
] using a gradient index lens, and α for i in equation (3) above is 0.07 P-0,,2/ P 01)
To select the range, O/a in the diagram is Q, 3 m 7 m -17
It falls within the range of m/m.
第２図に本発明の他の実施例を示す。FIG. 2 shows another embodiment of the invention.
本例は一端側に夕１周に張り出す７ラング部ざをもつ円
筒型のレンズホルダー７内に、レンズ長を前述（３）式
の範囲内とした広間口角、例えば開口数（ＮＡ）がＯ，
グＩ！に１ｉｉＪ後の屈折率分布型レンズ！を固着し、
このレンズホルダー７の内径よりも余裕をもった小径の
突出部ワおよびこれに続くポルゲー内径よりも大径の本
体部分１０からなるファイバースリーブ／／をレンズボ
ルダ−７内に入れ込み、スリーブ／／の突出部９に設け
られた細孔／、２に光フアイバー裸線／３を通し、本体
ｍｓ分１０（ｆｃ設けられた大径孔／４／に裸線／３を
ｆ＆覆している被覆材／Ｓ先端を入れ込み接着剤／乙で
固定する。In this example, a cylindrical lens holder 7 with seven rungs projecting around one end on one end is provided with a wide opening with a lens length within the range of equation (3) above, for example, a numerical aperture (NA). O,
Gui! A gradient index lens after 1iiJ! fix it,
A fiber sleeve // consisting of a protruding portion wa with a small diameter with a margin larger than the inner diameter of the lens holder 7 and a main body portion 10 having a diameter larger than the inner diameter of the lens holder // is inserted into the lens boulder 7, and the protrusion of the sleeve // is inserted into the lens boulder 7. Pass the bare optical fiber wire /3 through the small hole /, 2 provided in the part 9, and pass the bare wire /3 through the large diameter hole /4/ of the main body 10 (fc) Insert the tip and secure with adhesive.
そしてレンズホルダー７側壁（Ｃｉ役けた接着剤ｌに人
口／７を通してレンズホルダー内壁とファイバースリー
ブ突出部夕１周との間に充填した樹脂接着剤／ｇで両者
を本固定している。なお／７は樹脂ｌに大向の空気抜き
用の孔である。Then, the lens holder 7 side wall (Ci) is fixed with a resin adhesive /g filled between the inner wall of the lens holder and the fiber sleeve protrusion through the adhesive l filled with the resin adhesive /g. 7 is a hole in the resin l for air venting.
第３図の構造の光フアイバ一端子をＬＥＤ素子などの微
小光源と結合するコネクターの構造例を財・３図に示す
。Figure 3 shows an example of the structure of a connector that connects one terminal of the optical fiber with the structure shown in Figure 3 to a minute light source such as an LED element.
円筒型のスリーブチューブ、２ｏ内には内径が犬な大径
孔、２ＯＡとこれよりも内径の小さい小径孔、２（７Ｂ
を形成し、大径孔、２０ＡＫリング状の支持体！／中心
に発光素子２２を取りつけた光源プラグ、２３を嵌合さ
せ、支持体２／をスリーブチニーブ１１１１１壁に挿通
したネジコｑで＋ｌｌ＋合せ調整するよともに支持体２
１とスリーブチューブ２ｏ内面との間に接着剤、２夕を
充填して両者を固着している。Cylindrical sleeve tube, 2o has a large diameter hole with a dog-eared inner diameter, 2OA and a small diameter hole with a smaller inner diameter, 2 (7B)
, large diameter hole, 20AK ring-shaped support! /Fit the light source plug 23 with the light emitting element 22 attached to the center, and adjust the support 2/ with the screw q inserted into the wall of the sleeve chinibu 11111.
Adhesive and adhesive are filled between 1 and the inner surface of the sleeve tube 2o to fix them together.
またスリーブチューブ、！０の小径孔２０Ｂには］−記
の光フアイバ一端子／を嵌合させ、スリーブチューブ、
２０の一端側外周に設けたネジ、２０Ｃに袋ナンドー２
乙を結合することＫより端子／の７ラング部ｇをスリー
ブチューブ、２０端面に当Ｆさ七た恨ζｊ非でＩＩ；め
つけている。Sleeve tube again! The small diameter hole 20B of 0 is fitted with the optical fiber terminal/, and the sleeve tube,
Screw provided on the outer periphery of one end of 20, bag Nando 2 on 20C
To connect the terminals, the 7 rungs g of the terminals are attached to the end surface of the sleeve tube and the 20 ends of the terminals.
そしてスリーブチューブ２０の小径孔、２０Ｂの長さＬ
ｌ と光フアイバ一端子／のレンズホルダーの７ラング
部Ｆから先端までの距離Ｌ２との差ｅをｎＩＪ述（’ｌ
）式におけるｌに合せである。And the length L of the small diameter hole of the sleeve tube 20, 20B
The difference e between l and the distance L2 from the 7th rung part F of the lens holder of the optical fiber terminal/to the tip is nIJ ('l
) in the equation.
これにより発光素子、２２から拡散出射した光線は屈折
率分布型レンズ２内に入射し他端面において集東して極
めて効率良く光ファイパル／。２内に伝送される。As a result, the light beams diffused and emitted from the light emitting element 22 enter the gradient index lens 2 and are concentrated at the other end surface to form an optical fiber extremely efficiently. 2.
また発光素子、２．２とレンズ端面との間にはある程度
の空隙ｅが設けられているのでレンズ端面と発光素子と
の接触による両者の破ＪＬ−１あるいは傷付きを完全に
防＋Ｉ−することができる。In addition, since a certain amount of space e is provided between the light emitting element 2.2 and the lens end surface, it is possible to completely prevent damage or damage to both of them due to contact between the lens end surface and the light emitting element. be able to.
」−配光光素子２．２の代りに受光素子を使用すわば光
フアイバ一端から拡散用０＝Ｉする光線をレンズノを介
して受ソｔ＊子、２２１−に極１ｖ）で小さいスポット
径に紋って受光させることかでき、非常に小型でしかも
高感度の受光検出器を構成することができる。- Using a light-receiving element instead of the light distribution light element 2.2, in other words, it receives the diffused ray from one end of the optical fiber through the lens, with a small spot diameter of 1V). It is possible to receive light by reflecting the light on the surface of the object, making it possible to construct a very small and highly sensitive light receiving detector.
次にレンズとファイバースリーブとの輔芯合ぜの方法の
好適例について説明する。Next, a preferred example of a method for aligning the lens and the fiber sleeve will be described.
第１図に不ずよう（・てレンズホルダー７内に所定ｊ（
さをもつ屈折率分布型レンズ−を固着してこれを平千テ
光束を出す光源装置の前方に配置したホルダーにとりつ
ける。またレンズの能端面側に実装ファイバーと同一
仕ｍのモニター用ファイバー、２７およびこのファイバ
ーノア先端を通した７アイハースリーブ１０を配（４す
る。As shown in Figure 1, there is a predetermined position in the lens holder 7.
A refractive index gradient lens having a high temperature is fixed and attached to a holder placed in front of a light source device that emits a Hirayoshite luminous flux. Also, it is the same as the fiber mounted on the optical end side of the lens.
A monitor fiber 27 is attached to the monitor, and a sleeve 10 is placed through the tip of this fiber (4).
上記のホルダーに固定した端子と光源装置との間には光
路補正用の屈折率分布型レンズ２とを介在させる。この
補正用のレンズ２ｇはその長さＺｌを／／１１ピッチよ
りも若干短かくしておく。これによりｌＣＣ詰装置らの
平行光線２９は補正用レンズ！ざで集４４され、このレ
ンズ、２ｇの池端面からｌｈ の距離をおいた位置に焦
点を結んだ後、拡散しつつ端子内の屈折率分布型レンズ
２に入口・１し、このレンズ内の他端面で集光して光フ
アイバー２７内に入射する。A gradient index lens 2 for optical path correction is interposed between the terminal fixed to the holder and the light source device. The length Zl of this correction lens 2g is made slightly shorter than the //11 pitch. As a result, the parallel light rays 29 from the ICC filling device are corrected by a correction lens! This lens focuses at a distance lh from the end face of the 2g pond, and then enters the gradient index lens 2 in the terminal while diffusing, and the light inside this lens is The light is focused at the other end face and enters the optical fiber 27.
ここで１−記距離（ｈは補正用レンズの長さ２〕に対し
て、
ｊａｎ Ａ４ Ｚｌ ＝ ／／ＮＯＡ／Ａ ｅｚ −−
（３）和ｅ ］、 ＋ ｅ に予め設定しておけば、端
子レンズ！の前方での距離にあたかも極めて微小な光源
を置いたのと同等の効果が得られる。Here, for 1-recording distance (h is the length of the correction lens 2), jan A4 Zl = //NOA/A ez --
(3) If you set sum e ] and + e in advance, it becomes a terminal lens! The effect is equivalent to placing an extremely small light source at a distance in front of the object.
上記の準備をした後、モニター用光ファイバー２７の他
端からの出射光を光検出器３０で受けてその受光量を測
定機３／で測定しつつスリーブチ・−ブ１０を光軸に直
交する方向に移動させ、検 グ出器３０での受光量が最
大となる位置でファイバースリーブ１０とレンズホルダ
ー７との間を接着固定する。After making the above preparations, the light emitted from the other end of the monitoring optical fiber 27 is received by the photodetector 30, and the amount of received light is measured by the measuring device 3/, while the sleeve tube 10 is moved in the direction perpendicular to the optical axis. The fiber sleeve 10 and the lens holder 7 are adhesively fixed at a position where the amount of light received by the detector 30 is maximum.
これにより実（史用時にはファイバースリーブ１０の孔
／２に単にファイバー先Ｘｉ、ｆを通してファイバーと
ファイバースリーブとの間を接着固定するだけで済むこ
とになる。As a result, in actual use, it is sufficient to simply pass the fiber ends Xi, f through the holes /2 of the fiber sleeve 10 and adhesively fix the fibers and the fiber sleeve.
オＳ−図に本発明の端子の他のｆＩＩ造例を示す。Another example of the fII structure of the terminal of the present invention is shown in FIG.
本例のものは）−ｒイハ〜スリーブｌＩＯを、ファイバ
ー裸線の径にほぼ等しい孔をもつガラスチューブ等から
なる内管Ｉｌ／の外側に金属、＠脂等で形成した夕）径
がレンズボルダ−の内径よりも犬な補助部材１．２を接
合して構成している。In this example, the sleeve lIO is made of metal, resin, etc., on the outside of the inner tube Il, which is made of a glass tube with a hole approximately equal to the diameter of the bare fiber wire. It is constructed by joining an auxiliary member 1.2 whose inner diameter is smaller than -.
レンズホルダー７の側壁には接着剤注入ロア７および空
気抜き孔／７以外に、レンズ端面とファイバ一端面との
間に屈折率整合剤、例えば屈折率が約７５でゴム状に硬
化するエボ゛キシ樹脂系の整合剤を介在させるためにほ
ぼレンズ端面位置に整合剤注入口１／３が設けておる。In addition to the adhesive injection lower 7 and the air vent hole/7, the side wall of the lens holder 7 is provided with a refractive index matching agent, such as epoxy with a refractive index of about 75 and hardened into a rubber-like state, between the lens end face and one end face of the fiber. In order to insert a resin-based matching agent, a matching agent injection port 1/3 is provided approximately at the end face position of the lens.
第７図は本発明の一″ｙ！、飾例を示す側［（Ｊ１面図
、２・２図は本発明の他の実施例を示す側断面図、第３
図は本発明の端子を発光素子と結合するコイ・フタ−の
構造例を示す側断面図、オグ図は第２１ての☆１′１１
ｉ了−を組み）γてるに当りレンズとファイバースリー
ブのｉｌｌ＋芯かぜを行なう方法の好適例を示ず側１］
１「面図、２・５図は本発明のさらに別の実強例を示す
側［（〕ｒ面１′】４、オ乙［４は従来の方法を示す側
［（〕「面図である。
／・・・・・光ファ・ｒバ一端子 ！・・・・・１１
１（折率分布型レンズ
３、／３・・・・・・光ファイバー ５・・・・・・
光源乙、＋２９・・・・・光線 ７・・・・・レン
ズホルダ−ざ・・・・・・７ラング部 ／／・・・・
ファイバースリーブ２２・・・・・・発光素子 、！
、？・・・・・・光路補ｉＥ用レンズ第３図
第４図
１１３−
第５図Fig. 7 is a side view showing the first embodiment of the present invention and a decorative example [(J1 side view, Figs. 2 and 2 are side sectional views showing other embodiments of the present invention,
The figure is a side sectional view showing an example of the structure of a coil lid that connects the terminal of the present invention with a light emitting element.
side 1]
Figures 1 and 5 are side views showing yet another practical example of the present invention [(] r side 1'); Yes. /...Optical fiber/R bar one terminal!...11
1 (gradient index lens 3, /3...optical fiber 5...
Light source B, +29...Light ray 7...Lens holder...7 rung //...
Fiber sleeve 22... Light emitting element,!
,?・・・・・・Optical path compensation iE lens Fig. 3 Fig. 4 113- Fig. 5
Claims (1)
物状に減少するような屈折率分布をもつ透明円柱体から
なる屈折率分布型レンズの長さを、×ｍに選び、前記レ
ンズの一方の端面に光伝送ファイバーの端部を軸芯を合
せて密接接続したことを特徴とする微小な受発光素子と
の接続用光フアイバ一端子The length of a gradient index lens made of a transparent cylindrical body having a refractive index distribution such that the refractive index is maximum at the central axis and decreases parabolically in the radial direction toward the outer periphery is selected as × m, An optical fiber terminal for connection to a minute light receiving/emitting element, characterized in that an end of an optical transmission fiber is closely connected to one end face of the lens with its axis aligned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15792982A JPS5948720A (en) | 1982-09-10 | 1982-09-10 | Optical fiber terminal for connection with fine photodetecting and light emitting element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15792982A JPS5948720A (en) | 1982-09-10 | 1982-09-10 | Optical fiber terminal for connection with fine photodetecting and light emitting element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5948720A true JPS5948720A (en) | 1984-03-21 |
| JPH0235961B2 JPH0235961B2 (en) | 1990-08-14 |
Family
ID=15660553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15792982A Granted JPS5948720A (en) | 1982-09-10 | 1982-09-10 | Optical fiber terminal for connection with fine photodetecting and light emitting element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5948720A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009162942A (en) * | 2007-12-28 | 2009-07-23 | Opnext Japan Inc | Optical receptacle, optical module, and method for manufacturing optical module |
| WO2016157301A1 (en) * | 2015-03-27 | 2016-10-06 | オリンパス株式会社 | Optical transmission module, image pickup device, and structure for optical transmission module |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5355134A (en) * | 1976-10-29 | 1978-05-19 | Komota Giken Kk | Terminal device for optical fiber |
| JPS5424346U (en) * | 1977-07-21 | 1979-02-17 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH540827A (en) * | 1972-10-26 | 1973-08-31 | Schneider & Co W | Container, in particular for use as a toilet cabinet |
-
1982
- 1982-09-10 JP JP15792982A patent/JPS5948720A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5355134A (en) * | 1976-10-29 | 1978-05-19 | Komota Giken Kk | Terminal device for optical fiber |
| JPS5424346U (en) * | 1977-07-21 | 1979-02-17 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009162942A (en) * | 2007-12-28 | 2009-07-23 | Opnext Japan Inc | Optical receptacle, optical module, and method for manufacturing optical module |
| US8118498B2 (en) | 2007-12-28 | 2012-02-21 | Opnext Japan, Inc. | Optical receptacle, optical module, and method of manufacturing an optical module |
| WO2016157301A1 (en) * | 2015-03-27 | 2016-10-06 | オリンパス株式会社 | Optical transmission module, image pickup device, and structure for optical transmission module |
| JPWO2016157301A1 (en) * | 2015-03-27 | 2018-01-25 | オリンパス株式会社 | Optical transmission module, imaging device, and structure for optical transmission module |
| US10321811B2 (en) | 2015-03-27 | 2019-06-18 | Olympus Corporation | Optical transmission module, imaging apparatus, and optical transmission module structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0235961B2 (en) | 1990-08-14 |
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