JPH01128110U - - Google Patents
Info
- Publication number
- JPH01128110U JPH01128110U JP2417188U JP2417188U JPH01128110U JP H01128110 U JPH01128110 U JP H01128110U JP 2417188 U JP2417188 U JP 2417188U JP 2417188 U JP2417188 U JP 2417188U JP H01128110 U JPH01128110 U JP H01128110U
- Authority
- JP
- Japan
- Prior art keywords
- light
- fiber
- sensor
- optical axis
- input
- 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
- 239000000835 fiber Substances 0.000 claims description 11
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 claims description 4
- 239000013307 optical fiber Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Light Guides In General And Applications Therefor (AREA)
Description
第１図ａおよびｂは、この考案による微小変位
計測フアイバーセンサにおける入射面の１実施例
を示す構造図、第２図ａ，ｂおよびｃは、この考
案による微小変位計測フアイバーセンサの実施例
における全体構成と、物体の変位に対する受光電
圧の直線性を示す曲線図、第３図ａおよびｂは、
従来のフアイバーセンサの構成図、第４図ａ，ｂ
およびｃは、第３図ａ，ｂにおける物体の変位に
対する受光電圧の特性曲線を示す図である。
１……オプチカルフアイバ、１′，１″……入
射面、２……光源、３……受光素子、４……物体
、４ａ……ナイフエツジ、５……フアイバーの先
端部、５ａ……フアイバーの光軸、５ｂ……方形
の入射面、５ｃ……側面、６……コリメータレン
ズ。
Figures 1a and b are structural diagrams showing one embodiment of the entrance surface of the fiber sensor for measuring minute displacement according to this invention, and Figures 2a, b, and c are structural diagrams showing an example of the fiber sensor for measuring minute displacement according to this invention. Figure 3 a and b are curve diagrams showing the overall configuration and the linearity of the received light voltage with respect to the displacement of the object.
Configuration diagram of conventional fiber sensor, Figure 4 a, b
and c are diagrams showing characteristic curves of the light receiving voltage with respect to the displacement of the object in FIGS. 3a and 3b. DESCRIPTION OF SYMBOLS 1... Optical fiber, 1', 1''... Incidence surface, 2... Light source, 3... Light receiving element, 4... Object, 4a... Knife edge, 5... Tip of fiber, 5a... Fiber... Optical axis, 5b... rectangular entrance surface, 5c... side surface, 6... collimator lens.
Claims (1)
（以下単にフアイバーという）の先端より入力し
て該フアイバーの端末に設けられた受光素子によ
り受光し、該入力するセンサ光を遮断する物体を
検出するセンサにおいて、上記光源よりのセンサ
光の強度分布を一様な平行光とするコリメータレ
ンズを設け、上記物体の変位に対して上記受光素
子に入力するセンサ光の光量が直線的に変化する
方形の入射面とする上記フアイバーの先端を有す
ることを特徴とする、微小変位計測フアイバーセ
ンサ。 (2) 上記入射面は、フアイバーの光軸に対して
直角の方向、または斜め４５度の方向をなし、該
光軸方向、または該光軸に直角の方向よりそれぞ
れセンサ光を入射する、請求項１記載の微小変位
計測フアイバーセンサ。[Claims for Utility Model Registration] (1) Sensor light from a light source is input from the tip of an optical fiber (hereinafter simply referred to as fiber) and received by a light receiving element provided at the end of the fiber, and the input sensor light is In a sensor that detects an object that blocks the light, a collimator lens is provided to make the intensity distribution of the sensor light from the light source into uniform parallel light, and the amount of the sensor light input to the light receiving element is adjusted according to the displacement of the object. A fiber sensor for measuring minute displacement, characterized in that the tip of the fiber has a rectangular incidence surface that changes linearly. (2) The incident surface is perpendicular to the optical axis of the fiber or at an angle of 45 degrees, and the sensor light is incident from the optical axis direction or from the perpendicular direction to the optical axis, respectively. The micro displacement measuring fiber sensor according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2417188U JPH01128110U (en) | 1988-02-25 | 1988-02-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2417188U JPH01128110U (en) | 1988-02-25 | 1988-02-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01128110U true JPH01128110U (en) | 1989-09-01 |
Family
ID=31243791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2417188U Pending JPH01128110U (en) | 1988-02-25 | 1988-02-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01128110U (en) |
-
1988
- 1988-02-25 JP JP2417188U patent/JPH01128110U/ja active Pending
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