JPS6288934A - Aligning method for structure measurement of optical fiber - Google Patents
Aligning method for structure measurement of optical fiberInfo
- Publication number
- JPS6288934A JPS6288934A JP23046385A JP23046385A JPS6288934A JP S6288934 A JPS6288934 A JP S6288934A JP 23046385 A JP23046385 A JP 23046385A JP 23046385 A JP23046385 A JP 23046385A JP S6288934 A JPS6288934 A JP S6288934A
- Authority
- JP
- Japan
- Prior art keywords
- camera
- optical fiber
- measurement
- monitor
- fiber
- 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.)
- Pending
Links
Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
Abstract
Description
【発明の詳細な説明】
(産業上の利用分野)
本発明は、光ファイバの構造測定における調心方法に関
するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an alignment method for measuring the structure of an optical fiber.
(従来の技術)
光ファイバの構造測定を行うためのシステムを第・4図
に示す。TVカメラ2を経てモニタ、TV3に映し出さ
れた被測定光ファイバ1の断面像をカメラコントローラ
4.コンピュータ5で画像処理することによって、コア
径、クラッド径、非円率。(Prior Art) A system for measuring the structure of an optical fiber is shown in Fig. 4. The cross-sectional image of the optical fiber 1 to be measured, which is displayed on the monitor and TV 3 via the TV camera 2, is transmitted to the camera controller 4. The core diameter, cladding diameter, and non-circularity are determined by image processing using the computer 5.
偏心率等を求める。なお、コアに関しては光源り。Find the eccentricity, etc. As for the core, it is a light source.
を使って透過光による像を映し、クラッドに関しては光
源LJを使って反射光による像を映して処理を行ってい
る。なお、被測定光ファイバ1はダミーファイバ20と
V溝接続21されている。The cladding is processed by using a light source LJ to project an image by reflected light. Note that the optical fiber 1 to be measured is connected to a dummy fiber 20 by a V-groove connection 21.
しかし、光ファイバのセット状態によりモニタTV上の
ファイバ断面全体が映らない場合があり測定不可能とな
る。However, depending on the set state of the optical fiber, the entire cross section of the fiber may not be visible on the monitor TV, making measurement impossible.
(発明が解決しようとする問題点)
上述のように、モニタTV上にファイバ1Flf全体が
映らない場合は測定不可能となり、ファイバのセットを
やり直さなければならない。このようなセットのやり直
しがないようにすることが本発明の解決しようとする問
題点である。(Problems to be Solved by the Invention) As described above, if the entire fiber 1Flf is not displayed on the monitor TV, measurement is impossible and the fiber must be set again. The problem to be solved by the present invention is to prevent such redoing of the set.
(問題点を解決するための手段)
被測定光ファイバをセットしたま\での状態で予備測定
を行い近似円を求め、第2図のように最小2乗法によっ
て得られた近似円のクラッドの外周上の≠点A、 A’
、 B、 B’を選び、2点づ\2組に分け、それぞれ
の2点を結ぶ線分の垂直2等分線を引き、2本の垂直2
等分線の交点の位置Qを求め、その座標を記憶しておく
。この交点とモニタTVの中心点Pの距離を算出して、
コンピュータから新しく設けたTVカメラ位置調整機構
へこの距離に対応した移動指示を出すことにより、ファ
イバの中心をモニタTVの中央の中心点Pに第3図のよ
うにもってくるようにTV左カメラ位置を調整する。(Means for solving the problem) Perform preliminary measurements with the optical fiber under test still set, obtain an approximate circle, and calculate the cladding of the approximate circle obtained by the least squares method as shown in Figure 2. ≠ Point A, A' on the outer circumference
, B, B', divide them into two sets of two points, draw a perpendicular bisector of the line segment connecting each two points, and make two perpendicular 2
Find the position Q of the intersection of the equal dividing lines and memorize its coordinates. Calculate the distance between this intersection and the center point P of the monitor TV,
By issuing a movement instruction corresponding to this distance from the computer to the newly installed TV camera position adjustment mechanism, the TV left camera position is adjusted so that the center of the fiber is at the center point P in the center of the TV monitor as shown in Figure 3. Adjust.
(作用)
コンピュータの指示を解読して、駆動部に信号を出すた
めの変換回路、およびステップモータを使った駆動部を
有するTVカメラ位置ξn整機構により、TV左カメラ
固定している台の位置を制御する。(Function) The position of the stand on which the TV left camera is fixed is determined by the TV camera position adjustment mechanism, which has a conversion circuit that decodes computer instructions and sends signals to the drive unit, and a drive unit that uses a step motor. control.
(実施例)
第4図の点線内を第1図のように変える(光源系は第4
図と全く同じである)。なお、第1図は第4図のTVカ
メラ2以降を記したもので、モニタTV3 、カメラコ
ントローラ4.コンピュータ5にTVカメラ位置調整機
構6を追加したもので、その使用法は問題点を解決する
ための手段の項で述べたとおり、予備測定を行ってファ
イバの中心をモニタTV3の中央にもってきた後、即ち
調心した後、本測定を行うものである。(Example) Change the area within the dotted line in Figure 4 as shown in Figure 1 (the light source system is
(exactly the same as the figure). Note that FIG. 1 shows the TV camera 2 and subsequent parts in FIG. 4, including a monitor TV 3, a camera controller 4. A TV camera position adjustment mechanism 6 is added to the computer 5, and its usage is as described in the section on means for solving problems, by making preliminary measurements and bringing the center of the fiber to the center of the monitor TV 3. After that, after alignment, the main measurement is performed.
(発明の効果)
予備測定にて得られたファイバの位置をもとにTV左カ
メラ移動させることにより、必ず測定が行える。(Effects of the Invention) By moving the TV left camera based on the fiber position obtained in the preliminary measurement, measurement can be carried out without fail.
構造測定のように、測定系にパワーメータをもたない場
合でも調心できることである。This allows alignment even when the measurement system does not include a power meter, such as when measuring structures.
第1図は本発明の光ファイバの構造測定における調心方
法の実施例説明図、第2図は予備測定で被測定光ファイ
バをセットしたま\でのモニタTVに映った説明図、第
3図は第2図の映像をモニタTVの中央に移動させた説
明図、第4図は従来の光フアイバ構造測定のシステム説
明図である。
1・・・被測定光ファイバ、2・・・TV左カメラ3・
・・モニタTV、4・・・カメラコントローラ、5・・
・コンピュータ、6・・・TVカメラ位置調整機構。
才1図
第2図 第3図Fig. 1 is an explanatory diagram of an embodiment of the alignment method for measuring the structure of an optical fiber according to the present invention, Fig. 2 is an explanatory diagram of the optical fiber to be measured as shown on a TV monitor during preliminary measurement, and Fig. The figure is an explanatory diagram in which the image in FIG. 2 is moved to the center of a monitor TV, and FIG. 4 is an explanatory diagram of a conventional optical fiber structure measurement system. 1... Optical fiber to be measured, 2... TV left camera 3.
...Monitor TV, 4...Camera controller, 5...
- Computer, 6... TV camera position adjustment mechanism. Figure 1 Figure 2 Figure 3
Claims (1)
ンピュータから成る光ファイバの構造測定システムに、
TVカメラを載せている台の位置を制御し、その座標を
管理できるようなTVカメラ位置調整機構を加えて調心
することを特徴とする光ファイバの構造測定における調
心方法。 2、TVカメラ位置調整機構は、コンピュータから出さ
れた移動指示を解読して駆動部に信号を出すための変換
回路、および位置制御を確実に行うためにステップモー
タを使つた駆動部を有することを特徴とする特許請求の
範囲第1項記載の光ファイバの構造測定における調心方
法。[Claims] 1. An optical fiber structure measurement system consisting of a TV camera, a TV monitor, a camera controller, and a computer,
An alignment method for measuring the structure of an optical fiber, characterized in that alignment is performed by adding a TV camera position adjustment mechanism that controls the position of a stand on which a TV camera is mounted and manages its coordinates. 2. The TV camera position adjustment mechanism must have a conversion circuit that decodes the movement instruction issued by the computer and sends a signal to the drive unit, and a drive unit that uses a step motor to ensure position control. An alignment method for measuring the structure of an optical fiber according to claim 1.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23046385A JPS6288934A (en) | 1985-10-15 | 1985-10-15 | Aligning method for structure measurement of optical fiber |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23046385A JPS6288934A (en) | 1985-10-15 | 1985-10-15 | Aligning method for structure measurement of optical fiber |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6288934A true JPS6288934A (en) | 1987-04-23 |
Family
ID=16908238
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23046385A Pending JPS6288934A (en) | 1985-10-15 | 1985-10-15 | Aligning method for structure measurement of optical fiber |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6288934A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018146437A (en) * | 2017-03-07 | 2018-09-20 | 日東電工株式会社 | Inspection method of optical waveguide and preparation method of optical waveguide using the same |
-
1985
- 1985-10-15 JP JP23046385A patent/JPS6288934A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018146437A (en) * | 2017-03-07 | 2018-09-20 | 日東電工株式会社 | Inspection method of optical waveguide and preparation method of optical waveguide using the same |
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