JPH07134257A - Optical matrix switch - Google Patents

Optical matrix switch

Info

Publication number
JPH07134257A
JPH07134257A JP5304704A JP30470493A JPH07134257A JP H07134257 A JPH07134257 A JP H07134257A JP 5304704 A JP5304704 A JP 5304704A JP 30470493 A JP30470493 A JP 30470493A JP H07134257 A JPH07134257 A JP H07134257A
Authority
JP
Japan
Prior art keywords
connector
robot arm
adapter
adapters
axis direction
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
Application number
JP5304704A
Other languages
Japanese (ja)
Other versions
JP2865992B2 (en
Inventor
Hiroshi Furukawa
洋 古川
Yoshikazu Nomura
義和 野村
Hideo Kobayashi
英夫 小林
Toshiaki Katagiri
敏昭 片桐
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujikura Ltd
Nippon Telegraph and Telephone Corp
Original Assignee
Fujikura Ltd
Nippon Telegraph and Telephone Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujikura Ltd, Nippon Telegraph and Telephone Corp filed Critical Fujikura Ltd
Priority to JP5304704A priority Critical patent/JP2865992B2/en
Publication of JPH07134257A publication Critical patent/JPH07134257A/en
Application granted granted Critical
Publication of JP2865992B2 publication Critical patent/JP2865992B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4439Auxiliary devices
    • G02B6/444Systems or boxes with surplus lengths
    • G02B6/44528Patch-cords; Connector arrangements in the system or in the box
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4439Auxiliary devices
    • G02B6/444Systems or boxes with surplus lengths
    • G02B6/4452Distribution frames
    • G02B6/44524Distribution frames with frame parts or auxiliary devices mounted on the frame and collectively not covering a whole width of the frame or rack

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)
  • Structure Of Telephone Exchanges (AREA)
  • Mechanical Coupling Of Light Guides (AREA)

Abstract

PURPOSE:To provide a construction in which insertion and removal of a connector is made simple against an adapter. CONSTITUTION:The switch consists of plural adapters 2 which are placed on the surface (an x-y plane) of an adapter plate 6 in a matrix form, plural connectors 1 which are held by the adapters 2 and are freely inserted or removed in axis direction, a single robot arm 3 which moves in the x, y and axes directions while holding the connectors 1 and a connector holding section 7 which is placed in the opposite side to the arm 3 with respect to one y direction column in that the adapters 2 are placed and moves only in the y axis direction with the arm 3. Having this configuration, entanglement of optical fiber cords is prevented and the switching and the moving of connectors are surely performed.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】この発明は光マトリックススイッ
チ、さらに詳しく言えばコネクタのアダプタに対する挿
抜切替え構造を簡略化した光マトリックススイッチに関
するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical matrix switch, and more particularly to an optical matrix switch having a simplified connector insertion / removal switching structure for an adapter.

【0002】[0002]

【従来の技術】従来の典型的な光マトリックススイッチ
の切替え構造は、図示してはいないがアダプタ2の連設
されるひとつのy方向列の両側に、片側に1本づつ、計
2本のロボットアームを備えたものである。
2. Description of the Related Art A conventional typical switching structure of an optical matrix switch has a total of two switches, not shown in the figure, one on each side of one row in the y direction in which adapters 2 are arranged in series, one on each side. It is equipped with a robot arm.

【0003】これら2本のロボットアームを有する従来
のマトリックススィッチによるコネクタ切替えは、各コ
ネクタに延びている光ファイバ線が交錯して絡み合わな
いようにするために、周知のルール、つまりある番号の
コネクタが自分の番号より大きい番号のコネクタを越え
るときは、コネクタのアダプタに対する挿抜方向(z軸
方向)に見てたとえばその右側、その反対に自分の番号
より若い番号のコネクタを越えるときは左側を通過させ
る、というルールに従って移動される。
In the conventional connector switching by the matrix switch having these two robot arms, in order to prevent the optical fiber lines extending to each connector from being entangled with each other, a well-known rule, that is, a certain number is used. When a connector crosses a connector with a number larger than its own number, for example, to the right of the connector in the insertion / removal direction (z-axis direction), on the contrary, to the left when crossing a connector with a number smaller than its own number. It is moved according to the rule of passing.

【0004】上述のルールに従うため、たとえば上記の
左側における移動を一方のロボットアームが受け持ち、
右側の移動は別のロボットアームが受け持つようにし、
移動の側が変更する度毎にこの2本のロボットアーム間
でコネクタ1の受渡しを行うものである。
In order to follow the above rules, for example, one robot arm takes charge of the above movement on the left side,
Another robot arm is responsible for the movement on the right side,
The connector 1 is delivered between the two robot arms every time the moving side changes.

【0005】いま図7に例示する場合のコネクタの切り
替え移動を図8について具体的に説明しよう。これは6
個のアダプタa,b,c,d,e,fにそれぞれ上から
順に番号、、、、のコネクタが挿入されてお
り、アダプタfは空いている場合であって、これでコネ
クタを最下方の空きアダプタfに切り替え移動しよう
とする場合である。
The switching movement of the connector in the case illustrated in FIG. 7 will now be described in detail with reference to FIG. This is 6
When the adapters a, b, c, d, e, and f are respectively inserted with the connectors of numbers ,,, from the top, and the adapter f is empty, the connector is placed at the lowermost position. This is a case of switching to an empty adapter f and moving.

【0006】この場合は図8に示すように、まず左側の
ロボットアームがコネクタを把持してコネクタを挿
入してあるアダプタbを越えるまで下方に移動し、ここ
で受渡し点Aにおいて右側のロボットアームにこのコネ
クタを引き渡す。右側のロボットアームはコネクタ
、が挿入されているアダプタc,dを越えるまで下
方に移動し、ここで把持しているコネクタを受渡し点
Aにおいて左側のロボットアームに再び引き渡す。この
ロボットアームはコネクタの挿入してあるアダプタe
を越えるまで運搬して、切り替え先のアダプタfにこの
コネクタを挿入し、ここにこの一連のスイッチ切り替
え作業が完了するのである。
In this case, as shown in FIG. 8, the left robot arm first moves downward until it grips the connector and goes over the adapter b in which the connector is inserted. Deliver this connector to. The right robot arm moves downward until it passes the adapters c and d into which the connector is inserted, and the connector gripped here is handed over again to the left robot arm at the transfer point A. This robot arm has an adapter e with a connector inserted.
Then, the connector f is carried over, and this connector is inserted into the switching destination adapter f, and this series of switch switching work is completed.

【0007】[0007]

【発明が解決しようとする課題】しかしながら、従来の
光マトリックススイッチの場合は3軸方向に可動のロボ
ットアームを2本装備するために、スイッチ装置が高価
大型になるという大きい難点があり、加えてスイッチ切
替え操作における2本のロボットアーム間のコネクタ受
渡し作動が煩雑かつ困難であるという問題があった。
However, in the case of the conventional optical matrix switch, there is a big drawback that the switch device becomes expensive and large in size because it is equipped with two robot arms movable in three axial directions. There has been a problem that the connector passing operation between the two robot arms in the switch switching operation is complicated and difficult.

【0008】[0008]

【課題を解決するための手段】この発明はこの課題を解
決するためになされたものであって、この解決のためと
る手段は、アダプタ配列板の表面(x−y平面)上にマ
トリックス状に配設される複数のアダプタと、前記アダ
プタに保持されz軸方向に挿抜自在の複数のコネクタ
と、前記コネクタを把持してx,y,zの3軸方向に可
動な単一のロボットアームと、前記アダプタの並ぶひと
つのy方向列に関して前記ロボットアームと反対側に配
設され、前記ロボットアームとy軸方向にのみ一体的に
移動できるコネクタ保留部とを有する光マトリックスス
イッチである。
SUMMARY OF THE INVENTION The present invention has been made to solve this problem, and the means taken for this solution is to form a matrix on the surface (xy plane) of the adapter array plate. A plurality of adapters that are arranged, a plurality of connectors that are held by the adapters and that can be inserted and removed in the z-axis direction, and a single robot arm that grips the connectors and is movable in the three x-, y-, and z-axis directions. , An optical matrix switch having a connector holding section that is arranged on the opposite side of the robot arm with respect to one row of the adapters arranged in the y direction and that can move integrally with the robot arm only in the y-axis direction.

【0009】[0009]

【作用】コネクタ保留部はy軸方向に、コネクタをアダ
プタに対して挿抜するロボットアームと一体的に昇降す
るから、ロボットアームが把持するある番号のコネクタ
をy軸に沿って連設されるアダプタの左側を通過させる
か、右側を通過させるかは、単にそのロボットアームを
x軸方向に往復移動させて、それぞれ該コネクタをコネ
クタ保留部に渡してそれに昇降搬送させるか、そのロボ
ットアーム自身で把持したまま搬送するかによって容易
に達成でき、この結果光ファイバコードの錯綜を避けた
コネクタ切替えを容易に実施できる。
The connector holding section is vertically moved in the y-axis direction together with the robot arm for inserting / removing the connector into / from the adapter. Therefore, a certain number of connector held by the robot arm is continuously provided along the y-axis. Whether to pass the left side or the right side of the robot arm is determined by simply reciprocating the robot arm in the x-axis direction and passing the connector to the connector holding portion and moving it up and down, or grasping by the robot arm itself. This can be easily achieved by transporting as it is, and as a result, connector switching can be easily performed while avoiding the intricacy of the optical fiber cord.

【0010】[0010]

【実施例】図1およびこの要部を拡大して示した図2に
ついてこの発明の一実施例装置を説明する。図におい
て、符号2はアダプタを示し、これはアダプタ配列板6
の表面(x−y平面)にマトリックス状に配列装備され
ている。符号1はコネクタを示し、これは図示のように
各アダプタ2に挿入保持されており、アダプタ2に対し
てx−y平面に直交する方向、つまりz軸方向に抜き出
して他のアダプタ2に挿入することによってコネクタの
切替えがなされるわけである。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An apparatus according to an embodiment of the present invention will be described with reference to FIG. 1 and FIG. In the figure, reference numeral 2 indicates an adapter, which is an adapter array plate 6
Are arranged in a matrix on the surface (xy plane). Reference numeral 1 indicates a connector, which is inserted and held in each adapter 2 as shown in the drawing, and is extracted in a direction orthogonal to the xy plane with respect to the adapter 2, that is, in the z-axis direction and inserted into another adapter 2. By doing so, the connectors are switched.

【0011】アダプタ配列板6の表面に対して直交する
方向に延びるロボットアーム3はその基部のロボット本
体4に支持され、ここに設けられる適宜の駆動部5によ
ってコネクタ挿抜のための一定長さのz軸方向の進退移
動が可能になっている。また基部4を含めた全体も案内
ロッド41に沿うx軸方向の移動、および図示されてい
ない案内ロッド41の両端に設けられる送り手段によっ
てy軸方向の運動も自在に構成されている。
A robot arm 3 extending in a direction orthogonal to the surface of the adapter array plate 6 is supported by a robot body 4 at the base thereof, and has a fixed length for inserting and removing a connector by an appropriate driving unit 5 provided therein. It is possible to move back and forth in the z-axis direction. Further, the entire body including the base portion 4 is also configured to move in the x-axis direction along the guide rod 41, and also to be able to move in the y-axis direction by feeding means provided at both ends of the guide rod 41 (not shown).

【0012】ひとつのアダプタ2のy方向列の上下の端
部には取付け板9A,9Bがアダプタ配列板から突設さ
れ、このアダプタ配列板6の表面に近いアダプタ2とコ
ネクタ1との嵌合部を避けた図の手前位置には撓曲しや
すい余長収納ケース9が設けられ、この内部にはそのア
ダプタ列に嵌まるコネクタ1から延びる光ファイバコー
ド1Aが図示のように整理収納される。
Mounting plates 9A and 9B project from the adapter array plate at the upper and lower ends of one adapter 2 in the y-direction row, and the adapter 2 near the surface of the adapter array plate 6 and the connector 1 are fitted together. An extra-length storage case 9 which is easily bent is provided in the front position in the drawing avoiding the portion, and an optical fiber cord 1A extending from the connector 1 fitted into the adapter row is arranged and stored inside the storage case 9 as illustrated. .

【0013】ひとつのアダプタ2のy方向列に関してロ
ボットアーム3と反対側には、コネクタ保留部7が支持
フレーム71を介して設けられる。これはアダプタ2と
同様にコネクタ1を嵌め込み支持できるもので、そのコ
ネクタ受入れ口は、アダプタ配列板6の表面から各アダ
プタ2と同様の高さに開口する。またこのコネクタ保留
部7は、コネクタ切替えに際してはy軸方向のみにはロ
ボットアーム3と一体的に運動できるように関連構成さ
れる。
On the side opposite to the robot arm 3 with respect to the y-direction row of one adapter 2, a connector holding portion 7 is provided via a support frame 71. This can fit and support the connector 1 like the adapter 2, and its connector receiving port is opened from the surface of the adapter array plate 6 to the same height as each adapter 2. Further, the connector holding section 7 is associated so that it can move integrally with the robot arm 3 only in the y-axis direction when switching the connector.

【0014】コネクタ保留部7の支持フレーム71に
は、アダプタ配列板6の表面と平行にアダプタ2の列の
前方を横切って延びる押し退け棒8が回転自在に取り付
けられ、不必要なときは旋回して格納される。これはコ
ネクタ切替えに際しコネクタ保留部7とロボットアーム
3とが一体的にy軸方向の昇降運動をするとき、各コネ
クタ1から前面に延び出している光ファイバコード1A
を捌くためのものである。
On the support frame 71 of the connector retaining portion 7, a push-out bar 8 extending rotatably across the front of the row of the adapters 2 is attached rotatably to the support frame 71 of the adapter array plate 6 and pivots when unnecessary. Stored. This is because the optical fiber cord 1A extending from each connector 1 to the front surface when the connector holding portion 7 and the robot arm 3 integrally move up and down in the y-axis direction when switching the connectors.
It is for dealing with.

【0015】つぎにこの発明装置によるコネクタの切替
えを従来装置について説明した図7と同一の場合につい
て、図3ないし図6を用いて説明しよう。まずロボット
アーム2にアダプタaにあるコネクタを把持させ、こ
れをコネクタ保留部7に預けさせる。そして空になった
ロボットアーム3は図示のようにアダプタaの右側まで
戻す。各図で実線はコネクタを把持した状態で移動する
場合のロボットアーム3の移動経路、破線は同じく空状
態で動くときの経路を示すことにする。
Next, switching of the connector according to the device of the present invention will be described with reference to FIGS. 3 to 6 in the same case as in FIG. 7 for the conventional device. First, the robot arm 2 is caused to hold the connector of the adapter a and deposit it in the connector holding section 7. Then, the empty robot arm 3 is returned to the right side of the adapter a as illustrated. In each figure, the solid line indicates the movement path of the robot arm 3 when moving while holding the connector, and the broken line indicates the path when moving in the empty state.

【0016】こんどは図4に示すように、ロボットアー
ム3をその位置から下方に降ろし、アダプタbを通り過
ぎたところで停止させる。このときコネクタ保留部7も
もちろんコネクタを保持した状態でアダプタbの左側
を通過してロボットアーム3と同一y座標位置に停止す
るわけである。この位置でロボットアーム3はx軸方向
に往復してコネクタ保留部7内からコネクタを把持し
てアダプタ列の右側位置に戻し、その後アダプタc,d
を越えた位置まで下降させる。つまりコネクタをそれ
より番号の小さいコネクタの左側を通過させ、またそ
れより番号の大きいコネクタ、の右側を通過させた
わけである。
Now, as shown in FIG. 4, the robot arm 3 is lowered from its position and stopped when it passes the adapter b. At this time, the connector holding section 7 also passes the left side of the adapter b while holding the connector, and stops at the same y coordinate position as the robot arm 3. At this position, the robot arm 3 reciprocates in the x-axis direction to grip the connector from inside the connector retaining portion 7 and return it to the right position of the adapter row, and then the adapters c and d.
Lower to a position beyond. That is, the connector was passed on the left side of the connector with a smaller number, and was passed on the right side of the connector with a higher number.

【0017】ついで図5に示すようにロボットアーム3
をx軸方向に往復させてコネクタ保留部7にコネクタ
を保持させ、最下方のアダプタfまで下降させる。そし
てその後図6に示すように、ロボットアーム3をx方向
に往復させてコネクタ保留部7のコネクタをアダプタ
fに移してこの一連のコネクタ切替え作業は完了する。
Then, as shown in FIG. 5, the robot arm 3
Is reciprocated in the x-axis direction to hold the connector in the connector holding portion 7 and descend to the lowest adapter f. Then, as shown in FIG. 6, the robot arm 3 is reciprocated in the x direction to move the connector of the connector holding section 7 to the adapter f, and this series of connector switching work is completed.

【0018】以上のロボットアーム3の移動操作は、既
に述べた光ファイバ線1Aの交錯を避けるための基本ル
ールに従うための操作であって、単一のロボットアーム
3だけでも、これとy軸方向に一緒に移動するコネクタ
保留部7の利用によってこのようにコネクタ切替えが極
めて簡単になることに注目されたい。
The above-described movement operation of the robot arm 3 is an operation for complying with the above-mentioned basic rule for avoiding the intersection of the optical fiber lines 1A, and even with only the single robot arm 3, this operation is performed in the y-axis direction. It should be noted that the use of the connector holding section 7 which moves together with each other makes the switching of the connector extremely simple.

【0019】[0019]

【発明の効果】この発明によれば、コネクタ保留部はy
軸方向に、コネクタをアダプタに対して挿抜するロボッ
トアームと一体的に昇降するから、ロボットアームが把
持するある番号のコネクタをy軸に沿うアダプタの左側
を通過させるか、右側を通過させるかは、単にそのロボ
ットアームをx軸方向に往復移動させて、それぞれ該コ
ネクタをコネクタ保留部に渡してそれに昇降搬送させる
か、そのロボットアーム自身で把持したまま搬送するか
によって容易に達成でき、この結果単一のロボットアー
ムを備えるだけでも光ファイバコードの錯綜を避けてコ
ネクタ切替えを容易にかつ迅速に実施できる効果があ
る。また、単一のロボットアームであるため構造も簡単
で低価格の光マトリックススイッチを得られる利点があ
る。
According to the present invention, the connector holding portion is y
Since the connector moves up and down in the axial direction together with the robot arm that inserts / removes the connector into / from the adapter, it depends on whether the connector of a certain number held by the robot arm passes through the left side or the right side of the adapter along the y-axis. , Which can be easily achieved by simply reciprocating the robot arm in the x-axis direction and passing the connector to the connector holding portion and moving it up and down, or by carrying the connector while holding it by the robot arm itself. Even if only a single robot arm is provided, it is possible to easily and swiftly perform connector switching while avoiding the confusion of the optical fiber cord. Further, since it is a single robot arm, there is an advantage that the structure is simple and an inexpensive optical matrix switch can be obtained.

【図面の簡単な説明】[Brief description of drawings]

【図1】この発明の一実施例を示す簡略斜視図である。FIG. 1 is a simplified perspective view showing an embodiment of the present invention.

【図2】図1の要部を示す拡大斜視図である。FIG. 2 is an enlarged perspective view showing a main part of FIG.

【図3】図7の場合におけるコネクタの切替え移動を説
明する平面図である。
FIG. 3 is a plan view illustrating the switching movement of the connector in the case of FIG.

【図4】同じくコネクタの切替え移動を説明する平面図
である。
FIG. 4 is a plan view for explaining the switching movement of the connector.

【図5】同じくコネクタの切替え移動を説明する平面図
である。
FIG. 5 is a plan view which similarly illustrates the switching movement of the connector.

【図6】同じくコネクタの切替え移動を説明する平面図
である。
FIG. 6 is a plan view for explaining the switching movement of the connector.

【図7】コネクタ切替えの説明例を示す簡略平面図であ
る。
FIG. 7 is a simplified plan view showing an example of connector switching.

【図8】従来装置によるコネクタ切替えを説明するため
の平面図である。
FIG. 8 is a plan view for explaining connector switching by a conventional device.

【符号の説明】[Explanation of symbols]

1 コネクタ 2 アダプタ 1A 光ファイバコード 3 ロボットアーム 4 ロボット本体 5 駆動部 6 アダプタ配列板 7 コネクタ保留部 8 押し退け棒 9 余長収納ケース 1 Connector 2 Adapter 1A Optical Fiber Cord 3 Robot Arm 4 Robot Main Body 5 Drive Unit 6 Adapter Arrangement Plate 7 Connector Reservation Unit 8 Push-out Rod 9 Extra Length Storage Case

───────────────────────────────────────────────────── フロントページの続き (72)発明者 小林 英夫 東京都千代田区内幸町1丁目1番6号 日 本電信電話株式会社内 (72)発明者 片桐 敏昭 東京都千代田区内幸町1丁目1番6号 日 本電信電話株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hideo Kobayashi 1-6, Uchisaiwaicho, Chiyoda-ku, Tokyo Inside Nippon Telegraph and Telephone Corporation (72) Toshiaki Katagiri 1-6, Uchisaiwaicho, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Corporation

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 アダプタ配列板(6)の表面(x−y平
面)上にマトリックス状に配設される複数のアダプタ
(2)と、前記アダプタ(2)に保持されz軸方向に挿
抜自在の複数のコネクタ(1)と、前記コネクタ(1)
を把持してx,y,zの3軸方向に可動な単一のロボッ
トアーム(3)と、前記アダプタ(2)の並ぶひとつの
y方向列に関して前記ロボットアーム(3)と反対側に
配設され、前記ロボットアーム(3)とy軸方向にのみ
一体的に移動できるコネクタ保留部(7)とを有する光
マトリックススイッチ。
1. A plurality of adapters (2) arranged in a matrix on the surface (xy plane) of an adapter array plate (6), and held in the adapters (2) and freely inserted and removed in the z-axis direction. A plurality of connectors (1) and the connector (1)
And a single robot arm (3) that is movable in the three axial directions of x, y, and z, and is arranged on the opposite side of the robot arm (3) with respect to one row in the y direction in which the adapters (2) are arranged. An optical matrix switch provided with the robot arm (3) and a connector retainer (7) that can move integrally only in the y-axis direction.
JP5304704A 1993-11-10 1993-11-10 Optical matrix switch Expired - Fee Related JP2865992B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5304704A JP2865992B2 (en) 1993-11-10 1993-11-10 Optical matrix switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5304704A JP2865992B2 (en) 1993-11-10 1993-11-10 Optical matrix switch

Publications (2)

Publication Number Publication Date
JPH07134257A true JPH07134257A (en) 1995-05-23
JP2865992B2 JP2865992B2 (en) 1999-03-08

Family

ID=17936217

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5304704A Expired - Fee Related JP2865992B2 (en) 1993-11-10 1993-11-10 Optical matrix switch

Country Status (1)

Country Link
JP (1) JP2865992B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0724367A1 (en) * 1995-01-23 1996-07-31 Nippon Telegraph And Telephone Corporation Optical fiber cross connection apparatus and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0724367A1 (en) * 1995-01-23 1996-07-31 Nippon Telegraph And Telephone Corporation Optical fiber cross connection apparatus and method
US5784515A (en) * 1995-01-23 1998-07-21 Nippon Telegraph And Telephone Corporation Optical fiber cross connection apparatus and method

Also Published As

Publication number Publication date
JP2865992B2 (en) 1999-03-08

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