JPS60157125A - Photoelectric switch - Google Patents
Photoelectric switchInfo
- Publication number
- JPS60157125A JPS60157125A JP1375384A JP1375384A JPS60157125A JP S60157125 A JPS60157125 A JP S60157125A JP 1375384 A JP1375384 A JP 1375384A JP 1375384 A JP1375384 A JP 1375384A JP S60157125 A JPS60157125 A JP S60157125A
- Authority
- JP
- Japan
- Prior art keywords
- light
- photoelectric switch
- optical fiber
- detection area
- present
- 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
- Light Guides In General And Applications Therefor (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔技術分野〕
本発明は、光電スイッチに関するもので、特に徽少な物
体の検出に適した光ファイバを用いた光電スイッチであ
る。DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a photoelectric switch, and is a photoelectric switch using an optical fiber, which is particularly suitable for detecting objects with little movement.
従来の充電スイッチは、発光ダイオードを発光素子上し
ホトトランジスタを受光素子としてそれぞれ検知領域に
おいて対向したものがあるが、光が拡散するので、微少
物体の検知には困難があるうえ、検知領域が線状となり
、ある一定の面積の範囲を検知するには発光索子上受光
素子゛を多数開−列に設けなければならず、設置面積が
太きくなる問題がある。また、光ファイバの素線を同心
円に束ねた束を、検出領域において対向したものもある
が、設置面積は狭いが検出領域が線状になるものであっ
た。Conventional charging switches have a light-emitting diode on a light-emitting element and a phototransistor as a light-receiving element, which face each other in the detection area, but since the light is diffused, it is difficult to detect minute objects, and the detection area is too large. In order to detect a certain area range, a large number of light-receiving elements on the light-emitting cable must be arranged in open rows, resulting in a problem that the installation area becomes large. There is also a method in which concentric bundles of optical fiber strands are arranged facing each other in the detection area, but although the installation area is small, the detection area is linear.
本発明は上記従来の事情に着目し、設置面積が狭くかつ
検出領域が一定の面状として、微少物体の検出を行う光
電スイッチを得ることにある。The present invention has focused on the above-mentioned conventional situation, and an object of the present invention is to obtain a photoelectric switch that detects minute objects with a small installation area and a fixed detection area.
本発明は、光ファイバを受光素子と発光素子にそれぞれ
対設し、検出領域において、光ファイバの素線を一列に
設けてなるものである。In the present invention, optical fibers are provided opposite to the light receiving element and the light emitting element, respectively, and the strands of the optical fibers are provided in a line in the detection area.
以下本発明の実施例について、第１図乃至第３図を参照
して説明する。Embodiments of the present invention will be described below with reference to FIGS. 1 to 3.
光電ヌイッチの本体ｌのなかには、図外発光回路、受光
回路に接続した図外発光ダイオード、ホトトランジスタ
が収納しである。Inside the main body l of the photoelectric switch, a light emitting circuit (not shown), a light emitting diode (not shown) connected to a light receiving circuit, and a phototransistor are housed.
その発光ダイオード、ホトトランジスタに、光ファイバ
の複数の素線を同心円に束ねた光ファイバ２．３を対設
し、本体１から引出しである。An optical fiber 2.3, which is a plurality of optical fibers bundled concentrically, is provided opposite to the light emitting diode and phototransistor, and is drawn out from the main body 1.
４．５は投光器、受光器で、第２図のように光ファイバ
２．３の複数の素線６，６・・・を−列に並べて設けた
ものである。Reference numeral 4.5 denotes a light emitter and a light receiver, in which a plurality of strands 6, 6, . . . of the optical fiber 2.3 are arranged in a negative row as shown in FIG.
第３図に示すように投光器４の各素線６，６・・・から
投光された光軸は、受光器５の各素線６，６・・・に対
応しているので、受光器の各素線６．６・・・を経て、
受光素子により電気信号に変換され、受光回路で信号処
理して、光電検出信号が出力される。As shown in FIG. 3, the optical axis emitted from each wire 6, 6... of the light emitter 4 corresponds to each wire 6, 6... of the light receiver 5, so the light receiver After each strand of wire 6.6...
The light is converted into an electrical signal by the light receiving element, processed by the light receiving circuit, and a photoelectric detection signal is output.
いま第３図のようにいくつかの光軸Ｂ、Ｂ・・・を物体
人が遮ぎると、受光用の素線６．６・・・のいくつかが
受光しなくなり、集合する光ファイバ３全体の受光量が
低下するので、受光回路でその受光量の変化を検出すれ
ば、光軸Ｂのいくつかを遮ぎるだけの微少物体Ａであっ
ても素線６，６・・・の配設した長さの線状の領域にお
いて特に、発光量を調整することにより物体Ａの大きさ
を、受光量の低下した変化分から検出することも可能で
ある。Now, as shown in Fig. 3, if some of the optical axes B, B... are blocked by an object, some of the light-receiving strands 6, 6... will no longer receive light, and the entire optical fiber 3 will be Since the amount of received light decreases, if the light receiving circuit detects the change in the amount of received light, even if there is a minute object A that only blocks some of the optical axis B, the arrangement of the strands 6, 6, etc. By adjusting the amount of light emitted, it is also possible to detect the size of the object A based on the change in the amount of received light, especially in a linear region having a length of 1.
また対向式のほか、拡散反射式、回帰反射式にも適用で
きる。In addition to the facing type, it can also be applied to the diffuse reflection type and the retroreflection type.
本発明は以上説明した構成としており、所定面積の検出
領域において微少物体の検出が可能であり、光電スイッ
チの占有する設置面積が狭くてもよい等の効果がある。The present invention has the above-described configuration, and has advantages such as being able to detect minute objects in a detection area of a predetermined area, and allowing the installation area occupied by the photoelectric switch to be small.
第１図乃至第３図は本発明の実施例を示し、第１図は斜
視図、第２図は投・受光器の正面図、第３図は設置状態
の要部細面図である。
１：本体、２：投光器、３：受光器、４，５；光７アイ
バ、６；素線、Ａ；物体、Ｂ：光軸。
特許出願人
松下電工株式会社
代理人弁理士 竹 元 敏 丸
（ほか２名ン
第１図
第３図
Δ1 to 3 show an embodiment of the present invention, in which FIG. 1 is a perspective view, FIG. 2 is a front view of the projector/receiver, and FIG. 3 is a detailed view of the main parts in the installed state. 1: Main body, 2: Emitter, 3: Light receiver, 4, 5; Light 7 eyeball, 6: Element wire, A: Object, B: Optical axis. Patent applicant Matsushita Electric Works Co., Ltd. Patent attorney Toshimaru Takemoto (and 2 others) Figure 1 Figure 3 Δ
Claims (1)
イバ素線の複数本を、検出領域において一列に設けてな
ることを特徴とする光電スイッチ。(1) A photoelectric switch characterized in that a plurality of optical fiber wires are arranged in a line in a detection region, each facing a light receiving element and a light emitting element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1375384A JPS60157125A (en) | 1984-01-25 | 1984-01-25 | Photoelectric switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1375384A JPS60157125A (en) | 1984-01-25 | 1984-01-25 | Photoelectric switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60157125A true JPS60157125A (en) | 1985-08-17 |
Family
ID=11842009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1375384A Pending JPS60157125A (en) | 1984-01-25 | 1984-01-25 | Photoelectric switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60157125A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6392307U (en) * | 1986-12-05 | 1988-06-15 |
-
1984
- 1984-01-25 JP JP1375384A patent/JPS60157125A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6392307U (en) * | 1986-12-05 | 1988-06-15 |
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