JPS6336182A - Transmission type photointerrupter - Google Patents

Transmission type photointerrupter

Info

Publication number
JPS6336182A
JPS6336182A JP61181082A JP18108286A JPS6336182A JP S6336182 A JPS6336182 A JP S6336182A JP 61181082 A JP61181082 A JP 61181082A JP 18108286 A JP18108286 A JP 18108286A JP S6336182 A JPS6336182 A JP S6336182A
Authority
JP
Japan
Prior art keywords
light
resin layer
parts
light emitting
bent
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
JP61181082A
Other languages
Japanese (ja)
Inventor
Yasushi Hasegawa
也寸志 長谷川
Kazuo Kusuda
楠田 一夫
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.)
Sharp Corp
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Priority to JP61181082A priority Critical patent/JPS6336182A/en
Publication of JPS6336182A publication Critical patent/JPS6336182A/en
Pending legal-status Critical Current

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  • Geophysics And Detection Of Objects (AREA)

Abstract

PURPOSE:To reduce the size of a photointerrupter by molding a light emitting element and a light receiving element individually by a light-transmissive resin layer, and the forming windows and mold-them in one by a light shielding resin layer. CONSTITUTION:The light emitting diode 1 and phototransistor 2 are molded of the light-transmissive resin layers 5 which are tapered in a projection shape facing each other and have rectangular flat window parts 5a on the front end surfaces as light output/input parts. The window parts 5a are exposed in those resin layers 5 and set opposite each other, and lead frames 3a-3d are embedded on the opposite-surface sides of a U-shaped light shielding resin layer 6 while protruded sidewise. The resin layer 6 is bent at two cut parts 9 formed between the window parts 5a and 5a of the resin layer 6 to oppose the light emitting diode 1 and phototransistor 2 to each other. Further, sequence cut parts 7 are formed at the outside corner parts of two bent parts of the resin layer 6 so that the resin layer 6 is easily bent.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、発光素子と受光素子との間に形成された光路
が、この光路中に介在する物体により遮断されることに
より、物体の存在を検知する透過型ホトインタラプタに
関するものである。
Detailed Description of the Invention [Industrial Field of Application] The present invention is a method of detecting the presence of an object by blocking an optical path formed between a light emitting element and a light receiving element by an object intervening in the optical path. The present invention relates to a transmission type photointerrupter that detects.

〔従来技術〕[Prior art]

近年、可動部を有する機器における可動部の位置及び回
転角検出等に、機械式接点に代わって光センサが多用さ
れている。光センサは、無接点であるため、長寿命かつ
高速応答が可能であると共に、入力信号処理が容易であ
るという特徴を有しており、機器制御のコンピユータ化
が普及するに伴い用途が拡大している。
In recent years, optical sensors have been frequently used in place of mechanical contacts to detect the position and rotation angle of movable parts in devices having movable parts. Since optical sensors are non-contact, they have long lifespans, high-speed response, and are easy to process input signals.As the use of computers to control devices becomes more widespread, their applications are expanding. ing.

この種の光センサに係る従来のホトインクラブタは、第
11図に示すように、発光素子20と受光素子21とが
、各々別個に透光性樹脂層22・22にてモールドされ
、先出入孔23・23が穿設された遮光性材料からなる
ホルダー24内に、上記先出入孔23・23を介して光
路を形成し得るように、対向配置に挿入され、固定され
ている。
As shown in FIG. 11, in a conventional photoinclutter for this type of optical sensor, a light emitting element 20 and a light receiving element 21 are separately molded with transparent resin layers 22, 22, and then They are inserted and fixed in a holder 24 made of a light-shielding material in which entry/exit holes 23 are formed so as to face each other so that an optical path can be formed through the first entry/exit holes 23 .

ところが、上記従来の構造では、透光性樹脂層22・2
2にモールドされた発光素子20及び受光素子21と、
ホルダー24との関係の如く、構成部品が別体となって
いるため、小型化には不向きであると共に、自動化の障
害となっている。また、組み立て作業における作業工数
が多く、生産性の低下を招来する。さらに、寸法上の制
約が大きく、分解能の向上には限度がある等の欠点を有
していた。
However, in the conventional structure described above, the transparent resin layer 22.
2, a light emitting element 20 and a light receiving element 21 molded into
As with the holder 24, the components are separate, which makes it unsuitable for miniaturization and poses an obstacle to automation. Furthermore, the number of man-hours involved in assembly work is large, leading to a decrease in productivity. Furthermore, it has drawbacks such as large dimensional restrictions and limited improvement in resolution.

〔発明の目的〕[Purpose of the invention]

本発明は、上記従来の問題点を考1G、シてなされたも
のであって、小型化することができ、かつ生産性及び分
解能の向上を図り得る透過型ホトインタラプタの提供を
目的とするものである。
The present invention has been made in consideration of the above-mentioned conventional problems, and an object of the present invention is to provide a transmission type photointerrupter that can be downsized and improve productivity and resolution. It is.

〔発明の構成〕[Structure of the invention]

本第発明の透過型ホトインタラプタは、上記の目的を達
成するために、透光性樹脂層により別個にモールドされ
た発光素子と受光素子を、その前端面にそれぞれ光の出
入部となる窓部を形成して遮断光性樹脂層により一体に
モールドすると共に、該遮光性樹脂層における前記透光
性樹脂層の前端面間に切欠部を設け、該切欠部から前記
遮光性樹脂層を折曲させて前記発光素子と受光素子とを
対向させ、生産性の向上を図り得るように構成したこと
を特徴とするものである。
In order to achieve the above-mentioned object, the transmission type photointerrupter of the present invention has a light emitting element and a light receiving element separately molded with a translucent resin layer, each having a window portion on the front end surface of the light emitting element and a light receiving element, each of which serves as a light entry/exit part. is formed and integrally molded with a light-shielding resin layer, and a notch is provided between the front end surfaces of the light-transmitting resin layer in the light-shielding resin layer, and the light-shielding resin layer is bent from the notch. The light-emitting element and the light-receiving element are arranged so as to face each other, thereby improving productivity.

〔実施例〕〔Example〕

本発明の一実施例を第1図乃至第10図に基づいて以下
に説明する。
An embodiment of the present invention will be described below based on FIGS. 1 to 10.

本発明に係る透過型ホトインタラプタは、第1図(a)
〜(d)及び第2図に示すように、発光素子である発光
ダイオード1と、受光素子であるホトトランジスタ2と
が所定の間隔をおいて対向配置されている。発光ダイオ
ード1には通常、GaAs赤外発光ダイオードが用いら
れる。一方、ホトトランジスタ2は、ホトダイオード或
いは信号処理回路を集積化したホトダイオードであって
もよい。上記発光ダイオード1は、アノード側リードフ
レーム3aとワイヤ4によりワイヤボンディングされ、
かつカソード側リードフレーム3bにダイボンディング
されている。また、ホ)・1−ランジスタ2は、エミッ
タ側リードフレーム3Cとワイヤ4によりワイヤボンデ
ィングされ、コレクタ側リードフレーム3dにダイボン
ディングされている。発光ダイオード1とホトトランジ
スタ2とは各々、対向方向側にテーパ状の凸形状をなし
、かつ前端面に光の出入部となる方形平坦面の窓部5a
を有する透光性樹脂層5・5によりモールドされている
。そして、これら透光性樹脂層5・5は、窓部5aを露
出させ、窓部5a・5a同士を対向させ、かつ各リード
フレーム3a・3b・3C・3dを側方に突出させた状
態に、コ字形を成す遮光性樹脂層6の対向面側に埋設さ
れている。
The transmission type photointerrupter according to the present invention is shown in FIG. 1(a).
-(d) and FIG. 2, a light emitting diode 1, which is a light emitting element, and a phototransistor 2, which is a light receiving element, are arranged facing each other at a predetermined interval. As the light emitting diode 1, a GaAs infrared light emitting diode is usually used. On the other hand, the phototransistor 2 may be a photodiode or a photodiode in which a signal processing circuit is integrated. The light emitting diode 1 is wire-bonded to the anode side lead frame 3a by a wire 4,
Moreover, it is die-bonded to the cathode side lead frame 3b. Furthermore, e).1-The transistor 2 is wire-bonded to the emitter-side lead frame 3C using the wire 4, and die-bonded to the collector-side lead frame 3d. The light emitting diode 1 and the phototransistor 2 each have a tapered convex shape in the opposite direction, and have a rectangular flat window portion 5a on the front end surface that serves as a light entry/exit portion.
It is molded with translucent resin layers 5. The transparent resin layers 5, 5 are arranged in such a manner that the window portions 5a are exposed, the window portions 5a are opposed to each other, and the lead frames 3a, 3b, 3C, and 3d are protruded laterally. , are buried on the opposing surface side of the U-shaped light-shielding resin layer 6.

上記遮光性樹脂層6には、窓部5a・5d間の2カ所に
切欠部9・9が形成されており、この切欠部9・9から
遮光性樹脂層6を折曲させることにより、上記発光ダイ
オード1とホトトランジスタ2とが対向されるようにな
っている。また、遮光性樹脂層6における2カ所の折曲
部の外側角部には、遮光性樹脂層6の折曲を容易に行い
得るように川明切欠部7・7が形成されている。また、
遮光性樹脂層6におけるアノード側リードフレーム3a
の突出側角部にはアノード側マーク6dが形成されてい
る。そして、上記透過型ホトインタラプタの回路構成は
第3図の如くとなっている。
The light-shielding resin layer 6 has two notches 9, 9 formed between the windows 5a and 5d, and by bending the light-shielding resin layer 6 from the notches 9, 9, the light-shielding resin layer 6 can be bent. A light emitting diode 1 and a phototransistor 2 are arranged to face each other. Further, at the outer corners of the two bent portions of the light-shielding resin layer 6, cutout portions 7 are formed so that the light-shielding resin layer 6 can be easily bent. Also,
Anode side lead frame 3a in light-shielding resin layer 6
An anode side mark 6d is formed on the protruding side corner. The circuit configuration of the transmission type photointerrupter is as shown in FIG.

上記の構成において、本透過型ホトインクラブタの製造
は以下のようにして行われる。
In the above configuration, the present transmission type photoinclutter is manufactured as follows.

先ず、第4図に示すように、各リードフレーム3a・3
b・3C・3dをタイバ一部8と接続された状態に形成
し、カソード側リードフレーム3bとコレクタ側リード
フレーム3dに各々、発光ダイオード1とホトトランジ
スタ2をダイボンディングする。そして、上記発光ダイ
オード1とアノード側リードフレーム3a、及びホトト
ランジスタ イヤ4にてワイヤボンディングした後、第5図に示すよ
うに、発光ダイオード1及びホl− 1−ランジスタ2
を透光性樹脂層5・5にてモールドする。
First, as shown in FIG.
b, 3C, and 3d are formed in a state where they are connected to the tie bar part 8, and the light emitting diode 1 and the phototransistor 2 are die-bonded to the cathode side lead frame 3b and the collector side lead frame 3d, respectively. After wire bonding the light emitting diode 1, the anode side lead frame 3a, and the phototransistor ear 4, as shown in FIG.
is molded with transparent resin layers 5.5.

これと同時に、透光性樹脂層5・5における発光ダイオ
ード1とホトトランジスタ2の前方方向側をテーパ状の
凸形状に形成すると共に、前端面に方形平坦面状の窓部
5aを形成する。次いで、第6図に示すように、上記透
光性樹脂層5・5を、同方向に向けて並置し、窓部5a
を除いて方体状の遮光性樹脂層6によりモールドし、タ
イバー8・8を切断する。尚、窓部5aを露出させる操
作は、窓部5aと遮光性樹脂層6を成型する金型とのす
り合わせによりM単に行うことができる。その後、第7
図(a)(b)に示すように、透光性樹脂層5・5の前
端面間の距離、即ち発光ダイオード1とホトトランジス
タ2との所望の距離に応して、三角形の切欠部9・9及
び負側切欠部7・7を形成し、この切欠部9・9から、
第8図(a)(b)に示すように、遮光性樹脂層6を折
曲し、当接面同士を固着させて透過型ホトインクラブタ
の製造を終了する。
At the same time, the front side of the light emitting diode 1 and the phototransistor 2 in the transparent resin layers 5 are formed into a tapered convex shape, and a rectangular flat window portion 5a is formed on the front end surface. Next, as shown in FIG. 6, the translucent resin layers 5 are placed side by side in the same direction, and the window portion 5a is
It is then molded with a cube-shaped light-shielding resin layer 6, and the tie bars 8 are cut. Note that the operation of exposing the window portion 5a can be performed simply by rubbing the window portion 5a and a mold for molding the light-shielding resin layer 6. Then the seventh
As shown in FIGS. (a) and (b), a triangular notch 9 is formed according to the distance between the front end surfaces of the transparent resin layers 5, 5, that is, the desired distance between the light emitting diode 1 and the phototransistor 2.・9 and negative side notches 7, 7 are formed, and from this notch 9, 9,
As shown in FIGS. 8(a) and 8(b), the light-shielding resin layer 6 is bent and the abutting surfaces are fixed to each other, thereby completing the production of the transmission type photoinclutter.

〔変形例〕[Modified example]

本発明の変形例を第9図及び第10図に基づいて以下に
説明する。
A modification of the present invention will be explained below based on FIGS. 9 and 10.

遮光性樹脂層6は、第9図(a)〜(c)に示すように
、切欠部9におけ折曲時の接合部に各々、嵌合凸部6a
と嵌合凹部6bを形成し、遮光性樹脂層6を折曲させた
ときに上記両者を嵌合させ、熱可塑によって固着させて
もよい。これにより、発光ダイオード1とホトトランジ
スタ2との固定を容易に行うことができる。
As shown in FIGS. 9(a) to 9(c), the light-shielding resin layer 6 has fitting convex portions 6a at the joint portions at the time of bending in the cutout portions 9, respectively.
A fitting recess 6b may be formed, and when the light-shielding resin layer 6 is bent, the two may be fitted and fixed by thermoplastic. Thereby, the light emitting diode 1 and the phototransistor 2 can be easily fixed.

また、第10図(a)〜(C)に示すように、切欠部9
における折曲時の接合部に各々、アングル状の固定部材
10に対応した凹部6c・6cを形成し、遮光性樹脂層
6を曲折したときに上記凹部6c・6cに固定部材10
を嵌挿することにより、発光ダイオード1とホトトラン
ジスタ2とを容易かつ高精度に固定することもできる。
Moreover, as shown in FIGS. 10(a) to (C), the notch 9
Recesses 6c, 6c corresponding to the angle-shaped fixing members 10 are formed at the joints at the time of bending, respectively, and when the light-shielding resin layer 6 is bent, the fixing members 10 are formed in the recesses 6c, 6c.
By inserting the light-emitting diode 1 and the phototransistor 2, it is possible to easily and accurately fix the light-emitting diode 1 and the phototransistor 2.

〔発明の効果〕〔Effect of the invention〕

本発明の透過型ホトインタラプタは、以上のように、透
光性樹脂層により別個にモールドされた発光素子と受光
素子を、その前端面にそれぞれ光の出入部となる窓部を
形成して遮断光性樹脂層により一体にモールドすると共
に、該遮光性樹脂層における前記透光性樹脂層の前端面
間に切欠部を設け、該切欠部から前記遮光性樹脂層を折
曲させて前記発光素子と受光素子とを対向させた構成で
ある。それ故、透光性樹脂層の窓部までの部位の光路を
狭(設定することができ、かつ透光性樹脂層を従来の如
くホルダーに挿入する等の必要がないために寸法上の制
約が少なくなり、非検出物の位置検出における分解能を
向上することができると共に、構成部品が一体構造を成
していることにより小型化を図ることができる。また、
各々発光素子と受光素子をモールドした透光性樹脂層を
、遮光性樹脂層により一体にモールドし、この遮光性樹
脂層を折曲することにより発光素子と受光素子を対向さ
せた構造により、作業工数を低減することができ、製造
作業を簡素化することができると共に、製造作業の自動
化を図り得る等、生産性を向上することができる等の効
果を奏する。
As described above, the transmission type photointerrupter of the present invention blocks the light emitting element and the light receiving element, which are separately molded with a transparent resin layer, by forming a window section on the front end surface of each of the light emitting element and the light receiving element, each of which serves as a light entry/exit part. The light-emitting element is integrally molded with a photosensitive resin layer, and a notch is provided between the front end faces of the light-transmitting resin layer in the light-shielding resin layer, and the light-shielding resin layer is bent from the notch. This configuration has a light receiving element and a light receiving element facing each other. Therefore, the optical path of the part of the translucent resin layer up to the window can be set narrow, and there is no need to insert the translucent resin layer into the holder as in the past, so there are dimensional limitations. As a result, the resolution in detecting the position of a non-detectable object can be improved, and since the components have an integral structure, it is possible to achieve miniaturization.
A light-transmitting resin layer in which a light-emitting element and a light-receiving element are molded is integrally molded with a light-shielding resin layer, and this light-shielding resin layer is bent to make the light-emitting element and light-receiving element face each other. The number of man-hours can be reduced, manufacturing work can be simplified, manufacturing work can be automated, and productivity can be improved.

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

第1図乃至第7図は本発明の一実施例を示すものであっ
て、第1図<a>は透過型ホトインタラプタの同図(C
)におけるz−ZVA矢視断面図、同図(b)は同図(
a)におけるX −X VA矢視断面図、同図(c)は
同図(a)におけるW−W線矢視断面図、同図(d)は
同図(a)におけるY−Y線矢視断面図、第2図は透過
型ホトインタラプタの斜視図、第3図は透過型ホトイン
タラプタの回路図、第4図乃至第6図、第7図(a)(
b)及び第8図(a)  (b)は透過型ホトインクラ
ブタの製造工程を示す説明図、第9図の(a)と(b)
と(C)は変形例を示す概略の正面図と、要部説明正面
図と、要部説明平面図、第10図の(a)と(b)と(
c)は他の変形例を示す概略の正面図と、要部説明正面
図と、要部説明平面図、第11図は従来例を示す縦断面
図である。 1は発光ダイオード(発光素子)、2はホトトランジス
タ(受光素子)、5は透光性樹脂層、5aは窓部、6は
遮光性樹脂層、6aは嵌合凸部、6bは嵌合凹部、6C
は凹部、7は負側切欠部、9は切欠部、10は固定部材
である。 特許出願人    シャープ 株式会社第1図(a) X          L。 第4図 ′$5図 第6図 第7図(a) −$B図(a) 第7図(b)     第8図(b) $9図(a) 第9図(C)
1 to 7 show one embodiment of the present invention, and FIG. 1 <a> is the same view (C
z-ZVA arrow sectional view at ), the same figure (b) is the same figure (
A sectional view taken along the line X-X VA in a), FIG. 2 is a perspective view of a transmission-type photointerrupter, FIG. 3 is a circuit diagram of a transmission-type photointerrupter, FIGS. 4 to 6, and FIG. 7(a) (
b) and FIGS. 8(a) and 8(b) are explanatory diagrams showing the manufacturing process of a transmission type photoink converter, and FIGS. 9(a) and (b)
and (C) are a schematic front view showing a modified example, a front view explaining the main part, a plan view explaining the main part, (a) and (b) in Fig. 10, and (
c) is a schematic front view showing another modification, a front view illustrating main parts, and a plan view illustrating main parts, and FIG. 11 is a longitudinal sectional view showing a conventional example. 1 is a light emitting diode (light emitting element), 2 is a phototransistor (light receiving element), 5 is a transparent resin layer, 5a is a window, 6 is a light shielding resin layer, 6a is a fitting convex part, 6b is a fitting recess ,6C
7 is a recessed portion, 7 is a negative side notch, 9 is a notch, and 10 is a fixing member. Patent applicant Sharp Corporation Figure 1 (a) XL. Figure 4' Figure 5 Figure 6 Figure 7 (a) - Figure 7 (a) Figure 7 (b) Figure 8 (b) Figure 9 (a) Figure 9 (C)

Claims (1)

【特許請求の範囲】[Claims] 1、透光性樹脂層により別個にモールドされた発光素子
と受光素子を、その前端面にそれぞれ光の出入部となる
窓部を形成して遮断光性樹脂層により一体にモールドす
ると共に、該遮光性樹脂層における前記透光性樹脂層の
前端面間に切欠部を設け、該切欠部から前記遮光性樹脂
層を折曲させて前記発光素子と受光素子とを対向させて
なる透過型ホトインタラプタ。
1. A light-emitting element and a light-receiving element, which are molded separately with a light-transmitting resin layer, are integrally molded with a light-blocking resin layer by forming a window section on the front end surface of each of them to serve as a light entry/exit part, and A transmission type photo-transmissive photoreceptor comprising: a notch provided between the front end faces of the light-transmitting resin layer in the light-shielding resin layer; and the light-shielding resin layer being bent from the notch so that the light-emitting element and the light-receiving element face each other. Interrupter.
JP61181082A 1986-07-30 1986-07-30 Transmission type photointerrupter Pending JPS6336182A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61181082A JPS6336182A (en) 1986-07-30 1986-07-30 Transmission type photointerrupter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61181082A JPS6336182A (en) 1986-07-30 1986-07-30 Transmission type photointerrupter

Publications (1)

Publication Number Publication Date
JPS6336182A true JPS6336182A (en) 1988-02-16

Family

ID=16094496

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61181082A Pending JPS6336182A (en) 1986-07-30 1986-07-30 Transmission type photointerrupter

Country Status (1)

Country Link
JP (1) JPS6336182A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE37777E1 (en) 1986-10-08 2002-07-02 Jeffrey G. Herman Switch apparatus requiring the hand of the operator to activate the switch by breaking a light beam

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE37777E1 (en) 1986-10-08 2002-07-02 Jeffrey G. Herman Switch apparatus requiring the hand of the operator to activate the switch by breaking a light beam

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