JPH05149714A - Position detecting mechanism using optical sensor - Google Patents

Position detecting mechanism using optical sensor

Info

Publication number
JPH05149714A
JPH05149714A JP33963491A JP33963491A JPH05149714A JP H05149714 A JPH05149714 A JP H05149714A JP 33963491 A JP33963491 A JP 33963491A JP 33963491 A JP33963491 A JP 33963491A JP H05149714 A JPH05149714 A JP H05149714A
Authority
JP
Japan
Prior art keywords
section
detected
optical sensor
light
light emitting
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
Application number
JP33963491A
Other languages
Japanese (ja)
Inventor
Koichi Kobayashi
孝一 小林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nidec Precision Corp
Original Assignee
Nidec Copal Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nidec Copal Corp filed Critical Nidec Copal Corp
Priority to JP33963491A priority Critical patent/JPH05149714A/en
Publication of JPH05149714A publication Critical patent/JPH05149714A/en
Pending legal-status Critical Current

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  • Length Measuring Devices By Optical Means (AREA)
  • Photo Coupler, Interrupter, Optical-To-Optical Conversion Devices (AREA)
  • Optical Radar Systems And Details Thereof (AREA)

Abstract

PURPOSE:To make a light receiving section to receive the light of a light emitting section so that an electrical position detecting signal can be obtained by forming a slit between the edge section of an object to be detected and the edge section of a shielding section when the object to be detected moves to a detecting position. CONSTITUTION:A photoreflector 4 detects the position of a nonreflective black piece 3 to be inspected mounted on a shutter blade. The reflector 4 is fitted to the rear side of a fitting section 6 having a rectangular opening 8. A reflecting plate 9 is provided at a position opposite to a light emitting and receiving sections 7 and 10 at intervals which allow the piece 3 to move between the sections 7 and 10 and plate 9. Then the piece 3 blocking the opening 8 moves toward the opening from a blocking section 14 and a slit S is detected between the edge section 15 of the piece 3 and edge section 13 of the section 14, When the slit S is detected, the section 10 receives the light of the section 7 reflected by the plate 9 and obtains an electric signal.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、カメラ用シャッタ等の
精密機械に使用される光学センサを用いた位置検出機構
に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a position detecting mechanism using an optical sensor used in a precision machine such as a camera shutter.

【0002】[0002]

【従来の技術】従来より、カメラ等の精密機械におい
て、位置検出手段として無接点である光学センサが広く
使用されている。光学センサは、無接点であるため、被
検出物に対し負荷を与える必要がなく、また、回転部品
の位置検出も容易であり、特にカメラ用シャッタに多く
使用されている。
2. Description of the Related Art Conventionally, non-contact optical sensors have been widely used as position detecting means in precision machines such as cameras. Since the optical sensor has no contact point, it is not necessary to apply a load to an object to be detected, and the position of a rotating component can be easily detected, and it is often used especially for a camera shutter.

【0003】例えば、光学センサを図6に示すカメラ用
シャッタのシャッタ制御回路のトリガーとして使用した
場合について図7のシャッタ作動タイムチャートを参照
して説明すると、先ず図7(a)に示すようにシャッタ
駆動モータ1がONになり、それによって図7(b)に
示すように羽根2、2が開角度が大きくなる方向へ動き
出し、シャッタが閉鎖状態から開く直前に、羽根2の被
検出片3の位置を光学センサPが検出して図7(c)に
示すように出力信号を発生し、この出力信号をトリガー
として、このトリガーから時間tが経過した時、シャッ
タ駆動モータ1のスイッチが図7(a)に示すようにO
FFになり、図示しないバネにより図7(b)に示すよ
うに羽根2、2が閉じられる。なお、図7(d)はシャ
ッタの開口開放波形図である。
For example, a case where an optical sensor is used as a trigger of a shutter control circuit of a camera shutter shown in FIG. 6 will be described with reference to a shutter operation time chart of FIG. 7. First, as shown in FIG. The shutter drive motor 1 is turned on, and as a result, the blades 2 and 2 start moving in a direction in which the opening angle increases, as shown in FIG. 7B, and immediately before the shutter is opened from the closed state, the detected piece 3 of the blade 2 is detected. Position is detected by the optical sensor P and an output signal is generated as shown in FIG. 7C, and when this output signal is used as a trigger, when the time t elapses from this trigger, the switch of the shutter drive motor 1 is turned on. O as shown in 7 (a)
It becomes FF, and the blades 2 are closed by a spring (not shown) as shown in FIG. 7B. It should be noted that FIG. 7D is an opening waveform diagram of the shutter.

【0004】このように光学センサをシャッタ羽根等の
被検出物の位置検出手段として用いたものには、図8に
示すフォトリフレクタ4を用いた反射型の位置検出機
構、および図9に示すフォトインタラプタ5を用いた透
過型の位置検出機構がある。
As described above, the optical sensor used as the position detecting means of the object to be detected such as the shutter blade includes the reflection type position detecting mechanism using the photo reflector 4 shown in FIG. 8 and the photo detecting device shown in FIG. There is a transmission type position detection mechanism using the interrupter 5.

【0005】図8に示すフォトリフレクタ4を用いた位
置検出機構は、フォトリフレクタ4が取付部材6の裏側
(被検出片3と反対側)に、開口部8から発光部7およ
び受光部(図示されていない)を被検出片3側へ露出さ
せて取り付けられ、その開口部8と対向する位置には、
前記被検出片3が移動可能な間隔を隔てて反射板9が配
置された構成となっている。
In the position detecting mechanism using the photo-reflector 4 shown in FIG. 8, the photo-reflector 4 is provided on the back side of the mounting member 6 (on the side opposite to the detected piece 3), from the opening 8 to the light-emitting portion 7 and the light-receiving portion (shown in the figure). Is attached to the detected piece 3 side, and is attached to a position facing the opening 8.
The reflection plate 9 is arranged at an interval that allows the detected piece 3 to move.

【0006】また、図9に示すフォトインタラプタ5を
用いた位置検出機構は、フォトインタラプタ5の発光部
7と受光部10とがその間を被検出片3が移動可能な間
隔を隔てて対向配置された構成となっている。
Further, in the position detecting mechanism using the photo interrupter 5 shown in FIG. 9, the light emitting portion 7 and the light receiving portion 10 of the photo interrupter 5 are arranged so as to face each other with a space therebetween so that the detected piece 3 can move. It has been configured.

【0007】これらの位置検出機構では、発光部7が被
検出片3から開放されて受光部10(図8では図示され
ていない)が光を検出した時に電気信号が得られるよう
になっている。しかし、シャッタ制御用の電気トリガー
の場合、出力信号のタイミングの安定度は、そのままシ
ャッタ性能に影響するが、図8および図9のような構造
では検出接片3が検出位置に来る前に光が回り込んで受
光され、出力信号のタイミングがずれることがある。こ
のため、例えばフォトリフレクタ4を用いる場合、図1
0に示すように、発光部7から受光部10に跨がる狭い
領域をスリット11を設けて制限し、スリット11の前
方の被検出片3が移動してスリット11を全開させた時
に前記出力信号を発生させ、これにより出力信号のタイ
ミングを安定させていた。
In these position detecting mechanisms, an electric signal is obtained when the light emitting portion 7 is opened from the detected piece 3 and the light receiving portion 10 (not shown in FIG. 8) detects light. .. However, in the case of an electric trigger for shutter control, the stability of the timing of the output signal directly affects the shutter performance. However, in the structure as shown in FIGS. 8 and 9, the optical contact before the detection contact piece 3 reaches the detection position. May wrap around and be received, and the timing of the output signal may shift. For this reason, for example, when the photo reflector 4 is used,
As shown in 0, a narrow region extending from the light emitting unit 7 to the light receiving unit 10 is limited by providing a slit 11, and the detected piece 3 in front of the slit 11 is moved to fully open the slit 11. A signal was generated, which stabilized the timing of the output signal.

【0008】[0008]

【発明が解決しようとする課題】ところで、上記のよう
な従来の位置検出機構においては、使用される光学セン
サが反射型、透過型のいずれにしても極めて小型であ
り、発光部7(発光ダイオード)の径がφ0.3〜0.
5mmと極めて小さいため、光学センサの使用上の制約
もあって、約0.4mmという極めて幅の狭いスリット
が必要であり、また、そのスリットを薄いシートに形成
して使用するのが一般的であった。
In the conventional position detecting mechanism as described above, the optical sensor used is extremely small whether it is a reflection type or a transmission type, and the light emitting section 7 (light emitting diode) is used. ) Has a diameter of 0.3 to 0.
Since it is as small as 5 mm, there is a restriction on the use of the optical sensor, and a slit having an extremely narrow width of about 0.4 mm is required, and it is common to form the slit into a thin sheet for use. there were.

【0009】具体的には、例えば、図11および図12
に示すように、図13に示すようなフォトリフレクタ4
を取付部材6の裏側から発光部8および受光部10を開
口部8へ向けた状態で取り付け、また取付部材6の表側
にはシート12が取り付けられ、このシート12に発光
部7から受光部10に跨がるスリット11が形成され、
このシート12に対向した位置には被検出片3が移動可
能な間隔を隔てて反射板9が配置されたものがある。
Specifically, for example, FIG. 11 and FIG.
As shown in FIG. 13, the photo reflector 4 as shown in FIG.
Is attached from the back side of the mounting member 6 with the light emitting portion 8 and the light receiving portion 10 facing the opening 8, and a sheet 12 is attached to the front side of the mounting member 6, and the sheet 12 is attached to the sheet 12 from the light emitting portion 7 to the light receiving portion 10. Slit 11 is formed across the
In some cases, the reflection plate 9 is arranged at a position facing the sheet 12 at a distance that allows the detected piece 3 to move.

【0010】また、図14および図15に示すように、
フォトインタラプタ5の発光部7にシート12を取り付
けたものもある。
Further, as shown in FIGS. 14 and 15,
There is also one in which the sheet 12 is attached to the light emitting portion 7 of the photo interrupter 5.

【0011】しかしながら、これらの位置検出機構で
は、精度を決定するシート部品の取り付けの誤差の発生
は避けられないと共に、シート部品を用意すること自
体、部品の増加となり、コスト高となる欠点があった。
However, these position detection mechanisms have the drawbacks of inevitably causing an error in the attachment of the seat component that determines the accuracy, and increasing the number of components and increasing the cost by preparing the seat component itself. It was

【0012】また、前記のフォトリフレクタ4を用いた
ものとして、図16に示すように、シートを用いず、取
付部材6自体にスリット11を形成したものもある。し
かし、この方法では、スリットの幅が狭くなると、部品
の加工限界を超えることもあり、困難な面もあった。
Further, as the one using the photo reflector 4 described above, there is one in which a slit 11 is formed in the mounting member 6 itself without using a sheet as shown in FIG. However, in this method, when the width of the slit is narrowed, the machining limit of the component may be exceeded, which is also a difficult aspect.

【0013】[0013]

【課題を解決するための手段】光学センサを用いた本発
明の位置検出機構は、被検出物を検出位置で光学センサ
により検出して電気信号を得る位置検出機構において、
光学センサの発光部と被検出物の間に、発光部周辺の片
側を覆う遮蔽部が設けられ、この遮蔽部の縁部が前記被
検出物の縁部と重なり合う形状に形成されているもので
ある。
A position detecting mechanism of the present invention using an optical sensor is a position detecting mechanism for detecting an object to be detected by an optical sensor at a detection position to obtain an electric signal,
Between the light emitting portion of the optical sensor and the object to be detected, a shielding portion is provided to cover one side around the light emitting portion, and the edge portion of the shielding portion is formed in a shape overlapping with the edge portion of the object to be detected. is there.

【0014】[0014]

【作用】本発明の位置検出機構において、例えば発光部
の光が開放された時に電気信号を得る場合には、発光部
の前方を遮断している被検出物が遮蔽部から開放側へ向
かう方向へ移動して、その被検出物の縁部と前記遮蔽部
の縁部との間にスリットが形成された時、発光部の光を
受光部が受け、電気信号が得られる。
In the position detecting mechanism of the present invention, for example, when an electric signal is obtained when the light of the light emitting portion is opened, the detection object blocking the front of the light emitting portion is directed toward the opening side from the shielding portion. When a slit is formed between the edge of the object to be detected and the edge of the shield, the light receiving section receives the light of the light emitting section and an electric signal is obtained.

【0015】また、発光部の光が遮断された時に電気信
号を得る場合には、被検出物が開放側から遮蔽部へ向か
う方向へ移動してその被検出物の縁部が遮蔽部の縁部と
重なった時、発光部の光が遮断されて受光部に届かなく
なり、電気信号が得られる。
Further, when an electric signal is obtained when the light of the light emitting portion is cut off, the object to be detected moves in the direction from the open side to the shield, and the edge of the object to be detected is the edge of the shield. When it overlaps with the light receiving portion, the light of the light emitting portion is blocked and does not reach the light receiving portion, and an electric signal is obtained.

【0016】[0016]

【実施例】以下、本発明の第1実施例を図1および図2
を参照して説明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS.
Will be described.

【0017】この実施例では、図1に示すように、光学
センサをカメラ用シャッタのシャッタ制御用の電気トリ
ガーとして使用しており、シャッタ羽根に設けられた黒
色で無反射の被検出片3(被検出物)の位置をフォトリ
フレクタ4(光学センサ)で検出するようになってい
る。この位置検出機構では、被検出片3に遮られた発光
部7の光が開放された時にその光が反射板9に反射して
受光部10に受光され、電気信号が得られる。
In this embodiment, as shown in FIG. 1, an optical sensor is used as an electric trigger for shutter control of a camera shutter, and a black non-reflective detection piece 3 ( The position of the object to be detected) is detected by the photo reflector 4 (optical sensor). In this position detecting mechanism, when the light of the light emitting portion 7 blocked by the detected piece 3 is released, the light is reflected by the reflecting plate 9 and is received by the light receiving portion 10, and an electric signal is obtained.

【0018】上記のフォトリフレクタ4は、矩形状の開
口部8が設けられた取付部材6に裏側(図1の上側)か
ら取り付けられ、発光部7(発光ダイオード)および受
光部10(フォトトランジスタ)を開口部8の被検出片
3移動方向手前側(図1および図2において右側)の縁
部13に近接させて発光部7および受光部10周辺の該
被検出片3移動方向手前側に遮蔽部14を設けている。
また、前記発光部7および受光部10と対向する位置に
は、被検出片3が移動可能な間隔を隔てて反射板9が配
置されている。
The photoreflector 4 is mounted from the back side (upper side in FIG. 1) to a mounting member 6 provided with a rectangular opening 8, and the light emitting section 7 (light emitting diode) and the light receiving section 10 (phototransistor). Close to the edge 13 of the opening 8 on the front side (the right side in FIGS. 1 and 2) of the detected piece 3 in the moving direction, and shield the front side of the light emitting section 7 and the light receiving section 10 in the moving direction of the detected piece 3. A section 14 is provided.
Further, a reflector 9 is arranged at a position facing the light emitting unit 7 and the light receiving unit 10 with a space in which the detected piece 3 can move.

【0019】そして、図2に示すように、開口部8を遮
断している被検出片3(図では二点鎖線で示す)が遮蔽
部14から開口部8へ向かう方向(図の右から左)へ移
動して、その被検出片3の縁部15と遮蔽部14の縁部
13との間にスリットSが形成された時、受光部10が
反射板9に反射した発光部7の光を受け、電気信号が得
られる。
Then, as shown in FIG. 2, the detected piece 3 (indicated by a chain double-dashed line in the figure) blocking the opening 8 is directed from the shield 14 to the opening 8 (from right to left in the figure). ), And when the slit S is formed between the edge portion 15 of the detected piece 3 and the edge portion 13 of the shielding portion 14, the light of the light emitting portion 7 reflected by the light receiving portion 10 on the reflecting plate 9 Then, an electric signal is obtained.

【0020】なお、この実施例では、発光部7の光が開
放された時に電気信号を得るようになっているが、発光
部7の光が遮断された時に電気信号を得るようにしても
良い。その場合には、図3に示すように、被検出片3
(図では二点鎖線で示す)が開口部8から遮蔽部14へ
向かう方向(図の右から左)へ移動して、その被検出片
3の縁部15が遮蔽部14の縁部13と重なった時、発
光部7の光が遮断されて受光部10に届かなくなり、電
気信号が得られる。
In this embodiment, the electric signal is obtained when the light of the light emitting portion 7 is opened, but the electric signal may be obtained when the light of the light emitting portion 7 is cut off. .. In that case, as shown in FIG.
(Indicated by an alternate long and two short dashes line in the figure) moves in a direction from the opening 8 to the shield 14 (from right to left in the figure), and the edge 15 of the detected piece 3 becomes the edge 13 of the shield 14. When they overlap, the light of the light emitting unit 7 is blocked and does not reach the light receiving unit 10, and an electric signal is obtained.

【0021】次に、本発明の第2実施例を図4および図
5を参照して説明する。
Next, a second embodiment of the present invention will be described with reference to FIGS.

【0022】この実施例の位置検出機構は、発光部7と
受光部10が対向配置されたフォトインタラプタ5を光
学センサとして用いたものであり、従来の位置検出機構
と同様にフォトインタラプタ5の発光部7にシート12
が取り付けられている。しかし、このシート12には、
スリットではなく、幅の広い開口部8が形成され、その
開口部8の縁部13と被検出物3の縁部15との間にス
リットS(図5参照)が形成された時、発光部7の光を
受光部10が検出して電気信号を得るようになってい
る。なお、このようなフォトインタラプタ5を用いた位
置検出機構の場合でも、発光部7の光が遮断された時に
電気信号が得られるようにしても良い。
The position detecting mechanism of this embodiment uses a photo interrupter 5 in which a light emitting portion 7 and a light receiving portion 10 are arranged opposite to each other as an optical sensor, and emits light of the photo interrupter 5 similarly to the conventional position detecting mechanism. Sheet 12 on part 7
Is attached. However, this sheet 12
When a wide opening 8 is formed instead of the slit, and the slit S (see FIG. 5) is formed between the edge 13 of the opening 8 and the edge 15 of the detected object 3, the light emitting unit is formed. The light receiving section 10 detects the light of No. 7 and obtains an electric signal. Even in the case of the position detecting mechanism using such a photo interrupter 5, an electric signal may be obtained when the light of the light emitting unit 7 is blocked.

【0023】この位置検出機構によれば、シートにスリ
ットを形成する必要がないので、シートを打ち抜く金型
を作り易く、シートの打ち抜きも容易である。
According to this position detecting mechanism, since it is not necessary to form a slit in the sheet, it is easy to make a die for punching the sheet, and the sheet is also easily punched.

【0024】[0024]

【発明の効果】本発明の光学センサを用いた位置検出機
構によれば、従来のように約0.4mmという極めて幅
の狭いスリットを設ける必要がなく、被検出物が検出位
置に移動した時にその被検出物の縁部と遮蔽部の縁部と
の間にスリットを形成させることができる。
According to the position detecting mechanism using the optical sensor of the present invention, it is not necessary to provide a slit having an extremely narrow width of about 0.4 mm as in the conventional case, and when the object to be detected moves to the detecting position. A slit can be formed between the edge of the object to be detected and the edge of the shield.

【0025】このため、本発明によれば、出力信号のタ
イミングも従来と同一の安定性が得られる上、従来スリ
ット形成のために必要であったシートを必ずしも用いる
必要がないので、部品点数を減らすことができると共
に、シート取り付けの手間も省ける。また、シートを用
いるにしても、スリットを形成する必要がないので、シ
ート打ち抜き用の金型の製作およびシートの打ち抜き工
程が容易である。また、従来のシートを用いない位置検
出機構と比較しても、取付部材などにスリットを形成す
る必要がないので、加工が容易である。
Therefore, according to the present invention, the same stability of the output signal timing as that in the conventional case can be obtained, and since it is not always necessary to use the sheet conventionally required for forming the slit, the number of parts can be reduced. The number of seats can be reduced, and the labor for attaching the seat can be saved. Further, even if a sheet is used, it is not necessary to form a slit, and therefore, a die for punching a sheet and a step of punching a sheet are easy. Further, as compared with the conventional position detecting mechanism that does not use a sheet, it is not necessary to form a slit in the mounting member or the like, so that the processing is easy.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の第1実施例の光学センサを用いた位置
検出機構の横断面図である。
FIG. 1 is a cross-sectional view of a position detection mechanism using an optical sensor according to a first embodiment of the present invention.

【図2】本発明の第1実施例の光学センサを用いた位置
検出機構の作用を説明する説明である。
FIG. 2 is an illustration for explaining the operation of the position detecting mechanism using the optical sensor according to the first embodiment of the present invention.

【図3】本発明の第1実施例の光学センサを用いた位置
検出機構の他の使い方を説明す説明図である。
FIG. 3 is an explanatory diagram illustrating another usage of the position detection mechanism using the optical sensor according to the first embodiment of the present invention.

【図4】本発明の第2実施例の光学センサを用いた位置
検出機構の横断面図である。
FIG. 4 is a transverse sectional view of a position detecting mechanism using an optical sensor according to a second embodiment of the present invention.

【図5】本発明の第2実施例の光学センサを用いた位置
検出機構の平面図である。
FIG. 5 is a plan view of a position detecting mechanism using an optical sensor according to a second embodiment of the present invention.

【図6】シャッタ制御用の電気トリガーとして光学セン
サを使用したカメラ用シャッタの動作を説明する説明図
である。
FIG. 6 is an explanatory diagram illustrating an operation of a camera shutter that uses an optical sensor as an electric trigger for shutter control.

【図7】図6のシャッタ制御用の電気トリガーの作用を
説明するためのシャッタ作動タイムチャートである。
FIG. 7 is a shutter operation time chart for explaining the operation of the electric trigger for shutter control of FIG.

【図8】従来の反射型の光学センサを用いた位置検出機
構において出力信号のタイミンのずれが発生する原因を
説明する説明図である。
FIG. 8 is an explanatory diagram illustrating a cause of occurrence of timing deviation of an output signal in a position detection mechanism using a conventional reflection type optical sensor.

【図9】従来の透過型の光学センサを用いた位置検出機
構において出力信号のタイミンのずれが発生する原因を
説明する説明図である。
FIG. 9 is an explanatory diagram for explaining the cause of the deviation of the timing of the output signal in the position detection mechanism using the conventional transmission type optical sensor.

【図10】従来の反射型の光学センサを用いた位置検出
機構の概略図である。
FIG. 10 is a schematic diagram of a position detection mechanism using a conventional reflection type optical sensor.

【図11】従来の反射型の光学センサを用いた位置検出
機構の横断面図である。
FIG. 11 is a cross-sectional view of a position detecting mechanism using a conventional reflection type optical sensor.

【図12】従来の反射型の光学センサを用いた位置検出
機構の縦断面図である。
FIG. 12 is a vertical cross-sectional view of a position detection mechanism using a conventional reflection type optical sensor.

【図13】フォトリフレクタの斜視図である。FIG. 13 is a perspective view of a photo reflector.

【図14】従来の透過型の光学センサを用いた位置検出
機構の横断面図である。
FIG. 14 is a lateral cross-sectional view of a position detection mechanism using a conventional transmission type optical sensor.

【図15】従来の透過型の光学センサを用いた位置検出
機構の平面図である。
FIG. 15 is a plan view of a position detection mechanism using a conventional transmission type optical sensor.

【図16】従来の反射型の光学センサを用いた他の位置
検出機構の横断面図である。
FIG. 16 is a cross-sectional view of another position detecting mechanism using a conventional reflection type optical sensor.

【符号の説明】 P 光学センサ S スリット 1 シャッタ駆動モータ 2 羽根 3 被検出片(被検出物) 4 フォトリフレクタ(光学センサ) 5 フォトインタラプタ(光学センサ) 6 取付部材 7 発光部 8 開口部 9 反射板 10 受光部 11 スリット 12 シート 13 縁部 14 遮蔽部 15 縁部[Explanation of Codes] P Optical Sensor S Slit 1 Shutter Drive Motor 2 Blade 3 Detected Piece (Detected Object) 4 Photo Reflector (Optical Sensor) 5 Photo Interrupter (Optical Sensor) 6 Mounting Member 7 Light Emitting Section 8 Opening 9 Reflection Plate 10 Light receiving part 11 Slit 12 Sheet 13 Edge part 14 Shielding part 15 Edge part

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】被検出物を検出位置で光学センサにより検
出して電気信号を得る位置検出機構において、光学セン
サの発光部と被検出物の間に発光部周辺の片側を覆う遮
蔽部が設けられ、この遮蔽部の縁部が前記被検出物の縁
部と重なり合う形状に形成されている光学センサを用い
た位置検出機構。
1. A position detecting mechanism for detecting an object to be detected by an optical sensor at a detection position to obtain an electric signal, wherein a shielding section is provided between the light emitting section of the optical sensor and the object to be detected, and one side around the light emitting section is provided. A position detecting mechanism using an optical sensor in which an edge of the shielding portion overlaps with an edge of the object to be detected.
JP33963491A 1991-11-28 1991-11-28 Position detecting mechanism using optical sensor Pending JPH05149714A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP33963491A JPH05149714A (en) 1991-11-28 1991-11-28 Position detecting mechanism using optical sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP33963491A JPH05149714A (en) 1991-11-28 1991-11-28 Position detecting mechanism using optical sensor

Publications (1)

Publication Number Publication Date
JPH05149714A true JPH05149714A (en) 1993-06-15

Family

ID=18329355

Family Applications (1)

Application Number Title Priority Date Filing Date
JP33963491A Pending JPH05149714A (en) 1991-11-28 1991-11-28 Position detecting mechanism using optical sensor

Country Status (1)

Country Link
JP (1) JPH05149714A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109357636A (en) * 2018-12-10 2019-02-19 电子科技大学 A kind of phase amplification calculation method based on black part structure light scan
JP2022026078A (en) * 2020-07-30 2022-02-10 東芝エレベータ株式会社 Chain elongation detection device for passenger conveyor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109357636A (en) * 2018-12-10 2019-02-19 电子科技大学 A kind of phase amplification calculation method based on black part structure light scan
JP2022026078A (en) * 2020-07-30 2022-02-10 東芝エレベータ株式会社 Chain elongation detection device for passenger conveyor

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