JP3008312B2 - Photo interrupter and detection device - Google Patents
Photo interrupter and detection deviceInfo
- Publication number
- JP3008312B2 JP3008312B2 JP30466391A JP30466391A JP3008312B2 JP 3008312 B2 JP3008312 B2 JP 3008312B2 JP 30466391 A JP30466391 A JP 30466391A JP 30466391 A JP30466391 A JP 30466391A JP 3008312 B2 JP3008312 B2 JP 3008312B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- light receiving
- emitting element
- receiving elements
- insertion space
- 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.)
- Expired - Lifetime
Links
Landscapes
- Photo Coupler, Interrupter, Optical-To-Optical Conversion Devices (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は、発光素子とこれからの
出射光を受ける受光素子とを一つのケースに装備してな
るフォトインタラプタおよび検出装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photo-interrupter and a detection device having a light-emitting element and a light-receiving element for receiving light emitted therefrom in one case.
【0002】[0002]
【従来の技術】一般にフォトインタラプタは、図8に示
すように、ケース2に形成した検出物挿入空間3を挟ん
で対向するケース面2a、2bに、発光素子4とこれか
らの出射光を受ける受光素子5とを同一光軸上で対向す
るように設けられている。2. Description of the Related Art Generally, as shown in FIG. 8, a photo-interrupter has a light-emitting element 4 and a light-receiving element for receiving light emitted from the light-emitting element 4 on case surfaces 2a and 2b opposed to each other across a detection object insertion space 3 formed in a case 2. The device 5 is provided so as to face the same optical axis.
【0003】[0003]
【発明が解決しようとする課題】従来のフォトインタラ
プタは、検出物挿入空間に物体が挿入されて光路が遮ら
れることで物体の存在を検知するものであり、検出物の
存否を検出するだけの単一機能部品であった。A conventional photointerrupter detects the presence of an object by inserting an object into a detection object insertion space and blocking an optical path, and only detects the presence or absence of the detection object. It was a single function component.
【0004】本発明は、このフォトインタラプタに改良
を加えることで、検出物の存否検出機能のみならず、検
出物の大きさや位置をも検出できる機能を備えさせて、
その利用範囲を拡大できるようにすることを目的とす
る。According to the present invention, by improving the photointerrupter, not only the function of detecting the presence or absence of a detected object but also the function of detecting the size and position of the detected object is provided.
Its purpose is to be able to expand its use range.
【0005】[0005]
【課題を解決するための手段】上記目的を達成するため
に、本発明のフォトインタラプタは、空間を挟んで対向
するケース面の一方に1個の発光素子を設けるととも
に、入射光の一部を反射する複数の受光素子をケース面
に配設し、発光素子の出射光が、反射部材を介してある
いは反射部材を介することなく、受光素子で順次反射し
てゆくように、これら受光素子群を配列した。To achieve the above object, according to the Invention The photo interrupter of the present invention, in one of the case surfaces opposed to each other between air provided with one light emitting element, a part of the incident light A plurality of light-receiving elements that reflect light are disposed on the case surface, and the light emitted from the light-emitting element is transmitted through the reflection member.
There is without passing through the reflecting member, so slide into successively reflected by the light receiving element, an array of light-receiving element group.
【0006】また、本発明の検出装置は、検出物挿入空
間を挟んで対向するケース面の一方に1個の発光素子を
設けるとともに、入射光の一部を反射する複数の受光素
子をケース面に配設し、発光素子の出射光が、反射部材
を介してあるいは反射部材を介することなく、受光素子
で順次反射してゆくように、これら受光素子群を配列す
るとともに、複数の受光素子の、それぞれの受光作動に
基づいて検出物挿入空間の検出物を検出するものであ
る。 In addition, the detection device of the present invention provides a detection object insertion space.
One light emitting element is mounted on one of the opposing case surfaces
Multiple light-receiving elements that reflect part of the incident light
The light emitting element is disposed on the case
Light-receiving element without through a reflective member
These light receiving element groups are arranged so that
And the light receiving operation of multiple light receiving elements
Detecting the object in the object insertion space based on the
You.
【0007】[0007]
【作用】上記構成によると、図1に示すように、検出物
挿入空間3に検出物が存在しないと、発光素子4の出射
光は先ず対向ケース面2bの第1の受光素子5aに入射
され、この受光素子5aの表面で反射した一部の光は、
発光素子4側のケース面2aに備えた第2の受光素子5
bに入射され、更にこの受光素子5bの表面で反射した
一部の光が対向ケース面2aの第3の受光素子5cに入
射されることになり、受光素子5a、5b、5cが全て
受光作動することで検出物の非存在を感知する。According to the above construction, as shown in FIG. 1, when no object is present in the object insertion space 3, the light emitted from the light emitting element 4 is first made incident on the first light receiving element 5a on the facing case surface 2b. Part of the light reflected on the surface of the light receiving element 5a is
Second light receiving element 5 provided on case surface 2a on the side of light emitting element 4
b, and a part of the light reflected on the surface of the light receiving element 5b is incident on the third light receiving element 5c on the facing case surface 2a, and all the light receiving elements 5a, 5b, 5c perform light receiving operation. By doing so, the absence of the detected object is sensed.
【0008】また、図3(a)に示すように、第1およ
び第2の受光素子5a、5bが受光作動して、第3の受
光素子5cのみが受光作動しない時には、検出物挿入空
間3に上下寸法の小さい検出物6aが存在していること
を感知する。As shown in FIG. 3A, when the first and second light receiving elements 5a and 5b receive light and only the third light receiving element 5c does not receive light, the object insertion space 3 Is detected that a detection object 6a having a small vertical dimension exists.
【0009】そして、図3(b)に示すように、第1の
受光素子5aのみが受光作動した時には、上下寸法のや
や大きい検出物6bが存在していることを感知する。Then, as shown in FIG. 3B, when only the first light receiving element 5a performs the light receiving operation, it senses that there is a detection object 6b having a slightly larger vertical dimension.
【0010】さらに、図3(c)に示すように、全ての
受光素子5a、5b、5cが受光作動しない時には、上
下寸法の大きい検出物6cが存在していることを感知す
る。Further, as shown in FIG. 3 (c), when all the light receiving elements 5a, 5b, 5c do not perform the light receiving operation, it senses that a detection object 6c having a large vertical dimension is present.
【0011】あるいは、図4(a)、(b)、(c)に
示すように、上記した各検出状態から、一定上下寸法の
検出物6の存在位置が判断できる。Alternatively, as shown in FIGS. 4 (a), 4 (b) and 4 (c), it is possible to determine the position of the detection object 6 having a fixed vertical dimension from the above detection states.
【0012】[0012]
【実施例】図1に本発明に係るフォトインタラプタの原
理構成が示されている。FIG. 1 shows the principle configuration of a photointerrupter according to the present invention.
【0013】このフォトインタラプタ1のケース2には
検出物挿入空間3が溝状に形成され、この検出物挿入空
間3を挟んで対向するケース面2a、2bに1個の発光
素子4と複数(実施例では3個)の受光素子5a,5
b、5cが装備されている。In the case 2 of the photointerrupter 1, a detection object insertion space 3 is formed in a groove shape. One light emitting element 4 and a plurality of light emission elements 4 are formed on case surfaces 2a and 2b opposed to each other with the detection object insertion space 3 interposed therebetween. In the embodiment, three light receiving elements 5a, 5
b, 5c.
【0014】発光素子4としてLDあるいはLEDが用
いられ、その光軸が対向するケース面2bに対して傾斜
するようにケース面2aに取り付けられる。なお、発光
素子4からの射出光を平行化あるいは遠方集中化させる
ためにレンズを利用することもできる。An LD or LED is used as the light emitting element 4, and is mounted on the case surface 2a so that its optical axis is inclined with respect to the facing case surface 2b. Note that a lens can be used to collimate the light emitted from the light emitting element 4 or concentrate the light at a long distance.
【0015】受光素子5a,5b、5cには、その受光
面で入射光の一部が反射されるように、例えばシリコン
単結晶を材料としたフォトトランジスタが利用され、か
つ、図2に示すように、これら受光素子5a,5b、5
cが、発光素子4からの射出光を順次反射するように、
各受光素子5a,5b、5cの取り付け寸法L1 、L
2 、L3 が、発光素子4の光軸角度、および検出物挿
入空間3の幅Lに対応して設定されている。For the light receiving elements 5a, 5b and 5c, a phototransistor made of, for example, a silicon single crystal is used so that a part of the incident light is reflected on the light receiving surface, and as shown in FIG. The light receiving elements 5a, 5b, 5
c sequentially reflects the light emitted from the light emitting element 4,
Mounting dimensions L1, L of each light receiving element 5a, 5b, 5c
2 and L3 are set corresponding to the optical axis angle of the light emitting element 4 and the width L of the detection object insertion space 3.
【0016】本発明のフォトインタラプタは以上のよう
に構成されたものであり、図3に示すように、(a)受
光素子5a、5bだけが受光作動する状態、(b)受光
素子5aだけが受光作動する状態、(c)全ての受光素
子5a,5b、5cが受光作動しない状態、を検出する
ことで、検出物挿入空間3に挿入された検出物6a、6
b、6cの大きさを識別することができる。The photointerrupter of the present invention is configured as described above. As shown in FIG. 3, (a) a state in which only the light receiving elements 5a and 5b receive light, and (b) only a light receiving element 5a By detecting the state in which the light receiving operation is performed and (c) the state in which all the light receiving elements 5a, 5b, and 5c do not perform the light receiving operation, the detection objects 6a and 6 inserted into the detection object insertion space 3 are detected.
The sizes of b and 6c can be identified.
【0017】あるいは、図4の(a)、(b)、(c)
に示すようにして、検出物挿入空間3に挿入された検出
物6(一定の大きさ)の位置を識別することができる。
図4(a)、(b)、(c)の状態それぞれにおける検
出信号は、図3(a)、(b)、(c)の状態それぞれ
と同じとなる。Alternatively, (a), (b) and (c) of FIG.
As shown in (1), the position of the detection object 6 (having a certain size) inserted into the detection object insertion space 3 can be identified.
The detection signals in the states of FIGS. 4A, 4B, and 4C are the same as those in the states of FIGS. 3A, 3B, and 3C.
【0018】〔別実施例〕本発明は以下に示す形態に変
形して実施することも可能である。[Alternative Embodiment] The present invention can be modified and implemented in the following forms.
【0019】[1] 図5に示すように、発光素子4と
各受光素子5a,5b、5cの取り付けを上下に反転す
る。この場合は、上端位置が一定で下端位置が変化する
検出物の大きさを識別することができる。[1] As shown in FIG. 5, the mounting of the light emitting element 4 and each of the light receiving elements 5a, 5b, 5c is turned upside down. In this case, it is possible to identify the size of the detected object whose upper end position is constant and whose lower end position changes.
【0020】[2] 図6に示すように、一部の受光素
子に代えて反射部材としてのミラー7を利用することも
できる。[2] As shown in FIG. 6, a mirror 7 as a reflecting member can be used instead of some light receiving elements.
【0021】[3] 図7に示すように、発光素子4の
光軸をケース面2aと直角に設定するとともに、第1の
受光素子5aのみを傾斜して取り付けて、発光素子4か
らの射出光を順次反射させることも可能である。[3] As shown in FIG. 7, the light axis of the light emitting element 4 is set at a right angle to the case surface 2a, and only the first light receiving element 5a is mounted obliquely. It is also possible to reflect light sequentially.
【0022】[0022]
【発明の効果】以上の説明から明らかなように、本発明
によると、検出物体の存否検出は勿論のこと、検出物体
の大きさや位置をも検出することが可能となり、その多
機能を広い範囲に利用することができるようになった。As is apparent from the above description, according to the present invention, the onset Akira
According to, of course the presence or absence detection detecting an object, also it is possible to detect the size and position of the detected object, it has become possible to utilize the multi-function over a wide range.
【0023】しかも、本発明では1個の発光素子と複数
の受光素子を用いるので、例えば発光素子とこれに対向
する受光素子の対を複数組並べてアレイ状に構成して同
様な機能を発揮させるものに比較して発光素子の数が少
なく、安価に構成できるものである。Moreover, in the present invention, since one light emitting element and a plurality of light receiving elements are used, for example, a plurality of pairs of light emitting elements and light receiving elements opposed thereto are arranged in an array to exhibit the same function. The number of light emitting elements is smaller than that of the light emitting element, and the light emitting element can be configured at low cost.
【図1】本発明フォトインタラプタの原理構成図FIG. 1 is a diagram showing the principle configuration of a photointerrupter of the present invention.
【図2】本発明フォトインタラプタの概略構成図FIG. 2 is a schematic configuration diagram of a photointerrupter of the present invention.
【図3】使用形態の一例を示す正面図FIG. 3 is a front view showing an example of a usage pattern;
【図4】他の使用形態を示す正面図FIG. 4 is a front view showing another use mode.
【図5】本発明フォトインタラプタの別実施例を示す概
略正面図FIG. 5 is a schematic front view showing another embodiment of the photointerrupter of the present invention.
【図6】本発明フォトインタラプタの別実施例を示す概
略正面図FIG. 6 is a schematic front view showing another embodiment of the photointerrupter of the present invention.
【図7】本発明フォトインタラプタの別実施例を示す概
略正面図FIG. 7 is a schematic front view showing another embodiment of the photointerrupter of the present invention.
【図8】従来のフォトインタラプタの原理構成図FIG. 8 is a diagram illustrating the principle configuration of a conventional photointerrupter.
2a ケース面 2b ケース面 4 発光素子 5a 受光素子 5b 受光素子 5c 受光素子 2a case surface 2b case surface 4 light emitting element 5a light receiving element 5b light receiving element 5c light receiving element
フロントページの続き (58)調査した分野(Int.Cl.7,DB名) H01L 31/12 Continuation of front page (58) Field surveyed (Int.Cl. 7 , DB name) H01L 31/12
Claims (2)
(2a)、(2b)の一方に1個の発光素子(4)を設
けるとともに、入射光の一部を反射する複数の受光素子
(5a)、(5b)、(5c)をケース面(2a)、
(2b)に配設し、発光素子(4)の出射光が、反射部
材を介してあるいは反射部材を介することなく、受光素
子(5a)、(5b)、(5c)で順次反射してゆくよ
うに、これら受光素子(5a)、(5b)、(5c)群
を配列してあるフォトインタラプタ。1. A casing surface opposite to each other across between empty (3) (2a), provided with a single light-emitting element to one (2b) (4), a plurality of light receiving reflecting a portion of the incident light The elements (5a), (5b) and (5c) are replaced with a case surface (2a),
(2b), and the light emitted from the light emitting element (4) is reflected by the reflecting section.
These light receiving elements (5a), (5b), and (5c ) are sequentially reflected by the light receiving elements (5a), (5b), and (5c) without using a material or a reflecting member. Photo interrupters arranged.
ケース面(2a)、(2b)の一方に1個の発光素子
(4)を設けるとともに、入射光の一部を反射する複数
の受光素子(5a)、(5b)、(5c)をケース面
(2a)、(2b)に配設し、発光素子(4)の出射光
が、反射部材を介してあるいは反射部材を介することな
く、受光素子(5a)、(5b)、(5c)で順次反射
してゆくように、これら受光素子(5a)、(5b)、
(5c)群を配列するとともに、複数の受光素子(5
a)、(5b)、(5c)の、それぞれの受光作動に基
づいて検出物挿入空間(3)の検出物を検出する検出装
置。2. A detection object insertion space (3) opposed to the object insertion space (3).
One light emitting element on one of the case surfaces (2a) and (2b)
(4) is provided, and a plurality of reflecting a part of the incident light
Of the light receiving elements (5a), (5b) and (5c)
(2a), (2b), the light emitted from the light emitting element (4)
Is not via a reflective member or through a reflective member.
And sequentially reflected by the light receiving elements (5a), (5b) and (5c)
The light receiving elements (5a), (5b),
(5c) A group is arranged, and a plurality of light receiving elements (5
a), (5b) and (5c)
Detection device for detecting the object in the object insertion space (3)
Place .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP30466391A JP3008312B2 (en) | 1991-11-20 | 1991-11-20 | Photo interrupter and detection device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP30466391A JP3008312B2 (en) | 1991-11-20 | 1991-11-20 | Photo interrupter and detection device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH05145113A JPH05145113A (en) | 1993-06-11 |
JP3008312B2 true JP3008312B2 (en) | 2000-02-14 |
Family
ID=17935734
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP30466391A Expired - Lifetime JP3008312B2 (en) | 1991-11-20 | 1991-11-20 | Photo interrupter and detection device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3008312B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010080492A (en) * | 2008-09-24 | 2010-04-08 | Pulstec Industrial Co Ltd | Photointerrupter |
-
1991
- 1991-11-20 JP JP30466391A patent/JP3008312B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH05145113A (en) | 1993-06-11 |
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