JPS6357608U - - Google Patents
Info
- Publication number
- JPS6357608U JPS6357608U JP14970186U JP14970186U JPS6357608U JP S6357608 U JPS6357608 U JP S6357608U JP 14970186 U JP14970186 U JP 14970186U JP 14970186 U JP14970186 U JP 14970186U JP S6357608 U JPS6357608 U JP S6357608U
- Authority
- JP
- Japan
- Prior art keywords
- laser light
- input device
- optical system
- fiber input
- 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 claims description 5
- 239000013307 optical fiber Substances 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims 5
- 201000009310 astigmatism Diseases 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 12
- 238000001514 detection method Methods 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 2
Description
第１図は本考案の一実施例を示す構成図、第２
図は光ビームのｘ，ｙ各方向の位置検出の説明図
、第３図は差動アンプの出力特性を示す図、第４
図は光ビームのｚ方向の位置検出の説明図、第５
図は４分割フオトダイオード上のビームスポツト
形状を示す図、第６図はｚ方向位置信号の検出回
路を示す図、第７図は本考案の他の実施例を示す
構成図、第８図は２重格子への光ビームの入射状
態を示す図、第９図は本考案の他の実施例を示す
構成図、第１０図はコンパレータレベル設定の説
明図、第１１図は本考案の他の実施例を示す構成
図、第１２図は従来装置の構成例を示す図、第１
３図、第１４図はｘ，ｙ各方向の位置信号検出回
路の他の回路例を示す図である。
１……半導体レーザ、２，１２……コリメータ
レンズ、３……光フアイバ、４……パワーメータ
、１１，３１……ハーフミラー、１３……接続図
、１４……光学装置本体、１５……球レンズ、１
６……シリンドリカルレンズ、１７……４分割フ
オトダイオード、１８〜２０……差動アンプ、３
２，３３……回折格子、３４……光検出器、３５
，４５……アンプ、４４……フオトダイオード、
４１〜４３……コンパレータ、５０……ステージ
、５１〜５３……モータ付マイクロメータ、５１
〜５３……モータ付マイクロメータ、６０……２
次元半導体位置検出器。
Fig. 1 is a configuration diagram showing one embodiment of the present invention;
The figure is an explanatory diagram of position detection in the x and y directions of the light beam, Figure 3 is a diagram showing the output characteristics of the differential amplifier, and Figure 4 is a diagram showing the output characteristics of the differential amplifier.
The figure is an explanatory diagram of the position detection of the light beam in the z direction.
The figure shows the shape of a beam spot on a four-division photodiode, FIG. 6 shows a detection circuit for a z-direction position signal, FIG. 7 is a block diagram showing another embodiment of the present invention, and FIG. FIG. 9 is a configuration diagram showing another embodiment of the present invention, FIG. 10 is an explanatory diagram of comparator level setting, and FIG. 11 is a diagram showing another embodiment of the present invention. FIG. 12 is a diagram showing an example of the configuration of a conventional device;
3 and 14 are diagrams showing other circuit examples of the position signal detection circuit in each of the x and y directions. 1... Semiconductor laser, 2, 12... Collimator lens, 3... Optical fiber, 4... Power meter, 11, 31... Half mirror, 13... Connection diagram, 14... Optical device main body, 15... Ball lens, 1
6...Cylindrical lens, 17...4-division photodiode, 18-20...Differential amplifier, 3
2, 33...Diffraction grating, 34...Photodetector, 35
, 45...Amplifier, 44...Photodiode,
41-43... Comparator, 50... Stage, 51-53... Micrometer with motor, 51
~53...Micrometer with motor, 60...2
Dimensional semiconductor position detector.
Claims (1)
光のフアイバ入力装置において、ハーフミラーに
より２分した光の一方を光フアイバに、他方を光
学系に導くと共に、光学系の通過光を４分割フオ
トダイオードで受け、これら４分割フオトダイオ
ード出力を差動アンプで演算処理して光ビーム位
置信号を出力するように構成したことを特徴とす
るレーザ光のフアイバ入力装置。 (2) 前記光学系として、球レンズとシリンドリ
カルレンズよりなる非点収差光学系を用いたこと
を特徴とする実用新案登録請求の範囲第１項記載
のレーザ光のフアイバ入力装置。 (3) 前記光学系として、２つの格子と光検出器
を用いたことを特徴とする実用新案登録請求の範
囲第１項記載のレーザ光のフアイバ入力装置。 (4) 前記差動アンプの後に、レーザ光の強さに
よりコンパレータレベルを変える可変レベルコン
パレータを設け、光ビーム位置を２値で表示する
ようにしたことを特徴とする実用新案登録請求の
範囲第１項記載のレーザ光のフアイバ入力装置。[Claims for Utility Model Registration] (1) In a fiber input device for laser light that inputs laser light into an optical fiber, one of the lights split into two by a half mirror is guided to the optical fiber and the other to the optical system, and A fiber input device for laser light, characterized in that the light passing through the system is received by four-divided photodiodes, the outputs of these four-divided photodiodes are processed by a differential amplifier, and a light beam position signal is output. (2) A fiber input device for laser light according to claim 1, wherein the optical system is an astigmatism optical system consisting of a spherical lens and a cylindrical lens. (3) A fiber input device for laser light according to claim 1, characterized in that two gratings and a photodetector are used as the optical system. (4) A variable level comparator is provided after the differential amplifier to change the comparator level depending on the intensity of the laser beam, and the light beam position is displayed in binary values. A fiber input device for laser light according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14970186U JPH0610327Y2 (en) | 1986-09-30 | 1986-09-30 | Laser light fiber input device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14970186U JPH0610327Y2 (en) | 1986-09-30 | 1986-09-30 | Laser light fiber input device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6357608U true JPS6357608U (en) | 1988-04-18 |
| JPH0610327Y2 JPH0610327Y2 (en) | 1994-03-16 |
Family
ID=31065160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14970186U Expired - Lifetime JPH0610327Y2 (en) | 1986-09-30 | 1986-09-30 | Laser light fiber input device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0610327Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0219810A (en) * | 1988-07-08 | 1990-01-23 | Anritsu Corp | Device for assembling parts of optical circuit |
-
1986
- 1986-09-30 JP JP14970186U patent/JPH0610327Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0219810A (en) * | 1988-07-08 | 1990-01-23 | Anritsu Corp | Device for assembling parts of optical circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0610327Y2 (en) | 1994-03-16 |
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