JPS6129743A - Light reflection type sensor - Google Patents
Light reflection type sensorInfo
- Publication number
- JPS6129743A JPS6129743A JP15153984A JP15153984A JPS6129743A JP S6129743 A JPS6129743 A JP S6129743A JP 15153984 A JP15153984 A JP 15153984A JP 15153984 A JP15153984 A JP 15153984A JP S6129743 A JPS6129743 A JP S6129743A
- Authority
- JP
- Japan
- Prior art keywords
- light
- pellet
- emitting element
- element pellet
- reflection type
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N21/4738—Diffuse reflection, e.g. also for testing fluids, fibrous materials
- G01N21/474—Details of optical heads therefor, e.g. using optical fibres
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
Description
【発明の詳細な説明】 産業上の利用分野 本発明は光反射型センサの構成構造に関する。[Detailed description of the invention] Industrial applications The present invention relates to a structure of a light reflection type sensor.
光反射型センサとは、第１図に示す様に、対象物１４０
表面反射率が高い場合には発光素子１１から発せられた
光が対象物１４で反射され、その反射光を受光素子１２
で受けて電気信号が伝わるが、対象物１４０表面反射率
が低い場合には光が受光素子１２に到達せず、信号が伝
わらない装置である。A light reflection type sensor is, as shown in FIG.
When the surface reflectance is high, the light emitted from the light emitting element 11 is reflected by the object 14, and the reflected light is transmitted to the light receiving element 12.
However, if the surface reflectance of the object 140 is low, the light does not reach the light receiving element 12 and the signal is not transmitted.
さらに具体的に説明すると光反射型センサは、第２−（
１）図に示す様に、対象物１４には表面反射率の高い明
部１４１と表面反射率の低い暗部１４２があシ、かつ、
対象物１４が矢印Ａの向きに動いた場合には、その動き
に対応して第２− （２）図に示す様な信号が伝わる装
置である。第２−（２）図のレベル■は信号が伝わるＯ
Ｎ”の状態、レベルＩは信号が伝わらない０ＩＦＦ″の
状態を示す。To explain more specifically, the light reflection type sensor has the second-(
1) As shown in the figure, the object 14 has a bright part 141 with high surface reflectance and a dark part 142 with low surface reflectance, and
When the object 14 moves in the direction of arrow A, the device transmits a signal as shown in FIG. 2-(2) in response to the movement. Level ■ in Figure 2-(2) is O where the signal is transmitted.
A state of "N" and a level I indicate a state of "0IFF" in which no signal is transmitted.
従来の問題点 ゛
従来の光反射型センサを第１図に示す。従来の光反射型
センサは発光面、受光面が同一面上になく角度をもって
各々位置していた。そのために、その構、造は複雑で、
製造には多額のコストを要していた。すなわち、その構
造は、別々に樹脂封入された発光素子と、受光素子をケ
ースに組み込む構造であった。従って、製造にはまず、
発光素子ペレット、受光素子ペレットを別々にマウント
、ワイヤボンディングし、さらに樹脂封入して全く別個
の発光素子と受光素子を作シ、次にケースに該発光素子
と受光素子を組み込んで光反射型センサを完成していた
。Problems with the Conventional Figure 1 shows a conventional light reflection type sensor. In conventional light reflective sensors, the light emitting surface and the light receiving surface are not on the same plane, but are positioned at different angles. For this reason, its structure is complex,
Manufacturing costs were high. That is, the structure was such that a light-emitting element and a light-receiving element were separately sealed in resin and assembled into a case. Therefore, for manufacturing, first of all,
The light-emitting element pellet and the light-receiving element pellet are mounted separately, wire-bonded, and then sealed in resin to create a completely separate light-emitting element and light-receiving element.Then, the light-emitting element and the light-receiving element are assembled in a case to create a light reflective sensor. had been completed.
従って、従来の構造の光反射型センサはコストが高くな
るという欠点を有していた。すなわち、全く別々に組み
立てた発光素子と受光素子を用いる為に、発光素子１個
分のコスト及び受光素子１個分のコストを要し、さらに
画素子をケースに組み込Ｘむ′工程でも、別々に組み込
む為に、２個の素子を組み込むコストを要していた。従
来の構造の光反射型センサは発光素子、受光素子を１組
として用いるにもかかわらず、発光素子、受光素子の組
み立てを全く別々に行表うので製造コスト上は１組とし
て用いる利点が全く反映されなり構造となっていた。Therefore, the light reflection type sensor having the conventional structure has the disadvantage of high cost. In other words, since the light emitting element and the light receiving element are assembled separately, the cost for one light emitting element and the cost for one light receiving element are required, and even in the process of assembling the pixel element into the case, The cost of installing two elements was required because they were installed separately. Even though a light reflection type sensor with a conventional structure uses a light emitting element and a light receiving element as a set, the light emitting element and the light receiving element are assembled completely separately, so there is no advantage of using them as a set in terms of manufacturing costs. It was reflected in the structure.
発明の目的
本発明は従来の技術に内在する上記欠点を解消する為に
なされたものであシ、従って本発明の目的は、簡単な構
造で製造コストの安い新規な光反射部センサを提供する
ことＫある。OBJECTS OF THE INVENTION The present invention has been made in order to eliminate the above-mentioned drawbacks inherent in the conventional technology.Therefore, an object of the present invention is to provide a novel light reflecting sensor with a simple structure and low manufacturing cost. There is a thing called K.
発明の構成
本発明の前記目的は、同一基板上に隣接して配置された
発光素子ペレット及び受光素子ペレットの両ペレットを
おおい、かつ基板に固定された外装ケースを有する光反
射型センサによシ実現される。すなわち、本発明におい
ては、同一基板上に発光素子ペレット及び受光素子ベレ
ットを隣接して配置し、さらに光透過性の外装ケースで
両ベレット部をおおい、外装ケースを基板に固定するこ
とによシ光反射凰センサを完成させることを特徴とする
。従って１本発明によれば、極めて簡単な構造の光反射
型センサが実現される。Structure of the Invention The above-mentioned object of the present invention is to provide a light reflection type sensor having an exterior case that covers both a light emitting element pellet and a light receiving element pellet that are arranged adjacent to each other on the same substrate and is fixed to the substrate. Realized. That is, in the present invention, a light-emitting element pellet and a light-receiving element pellet are arranged adjacently on the same substrate, both pellets are covered with a light-transmissive outer case, and the outer case is fixed to the substrate. It is characterized by completing a light reflection sensor. Therefore, according to the present invention, a light reflection type sensor having an extremely simple structure can be realized.
発明の実施例
次に本発明をその好ましい一実施例について図面を参照
してさらに詳細に説明する。Embodiments of the Invention Next, a preferred embodiment of the present invention will be described in more detail with reference to the drawings.
第３図及び第４図は本発明による光反射型センサの第１
の実施例を示す斜視図及び断面図である。FIGS. 3 and 4 show the first light reflection type sensor according to the present invention.
FIG. 2 is a perspective view and a cross-sectional view showing an example.
本発明の第１の実施例による光反射部センサを製造する
Ｋは、まず基板３１上釦発光素子ベレット３２及び受光
素子ベレット詔をそれぞれ近接してマウン）する。最近
では１台のマウンタで２種以上のペレットを同一基板上
にマウントできるので、発光素子ペレットと受光素子ペ
レットを同一基板上に′ｖマウントることについては全
く不具合は生じない。また、フルオートマウンタ等、自
動的にペレットを認識して、はとんど人の手を介さずマ
ウント作業を行なえる全自動マウンタ′が普及している
ので、極めて廉価なコストで上述のマウント作業を行な
える。K, who manufactures the light reflecting sensor according to the first embodiment of the present invention, first mounts the button light emitting element bellet 32 and the light receiving element bellet on the substrate 31 in close proximity to each other. Recently, it is possible to mount two or more types of pellets on the same substrate with one mounter, so there is no problem at all when mounting a light emitting element pellet and a light receiving element pellet on the same substrate. In addition, fully automatic mounters, such as fully automatic mounters, that can automatically recognize pellets and mount them without much human intervention have become widespread, making it possible to mount the above-mentioned mounts at extremely low costs. Able to perform work.
さらに、金線でワイヤボンディングを行なうが、ので、
マウント工程と同様に極めて廉価なコストでボンディン
グ作業が行なえる。第４図では金線は省略されている。Furthermore, wire bonding is done with gold wire, so
Like the mounting process, bonding work can be performed at extremely low cost. In FIG. 4, the gold wire is omitted.
次に、耐環境性向上の為に、両ペレット部の樹脂コーテ
ィングを行なう。この樹脂コーティングには通常透明樹
脂を用い、その方法は液状樹脂をディスペンスによシベ
レット部に滴下する方法や、液状樹脂をスプレィ法によ
シペレット部に吹き付ける方法等、廉価でコーティング
できる方法がある。コーティング樹脂も、亦、図では省
略されている。Next, both pellet parts are coated with resin to improve environmental resistance. A transparent resin is usually used for this resin coating, and there are inexpensive coating methods such as dropping liquid resin onto the pellet part using a dispenser or spraying the liquid resin onto the pellet part using a spray method. The coating resin is also omitted in the figure.
ペレットコーティングが完了した後に、次は、外装ケー
ス具を取付けて光反射製センサを完成する。この取シ付
は方法は、第４図に示す様に、外装ケース３４に熱可塑
性樹脂を用い、外装ケースあに突起物３４１、基板３１
に孔をそれぞれ対応する様に設けて位置決めを行なｉ、
該突起物３４１を該孔に挿入した後突出した部分を加熱
したコテによって溶かし、リベット状につぶすことによ
り、ケー廉価に行うことができる。After pellet coating is completed, the next step is to attach the outer case to complete the light reflective sensor. This mounting method uses thermoplastic resin for the outer case 34, as shown in FIG.
Providing holes corresponding to each other for positioning, i,
After the protrusion 341 is inserted into the hole, the protruding portion is melted with a heated iron and crushed into a rivet shape, thereby making it possible to do this at a low cost.
以上の様にして製作した光反射型センサは第１図に示す
様な従来の構造の光反射盤セッサよシも極めて簡単な構
造であり、かつ前述の様にはるかに廉価なコストで製造
可能である。The light reflection type sensor manufactured as described above has an extremely simple structure compared to the light reflection plate sensor of the conventional structure as shown in Fig. 1, and as mentioned above, it can be manufactured at a much lower cost. It is.
また、精度の高いφ比を要求される光反射型センサにお
ｉでは第４図に示す様に発光素子ペレットと受光素子ペ
レットとの間に光を遮断する仕切板あを設け、発光素子
ペレット３２から横方向にもれる光を防止することがで
きる。In addition, in the case of the light reflection type sensor that requires a highly accurate φ ratio, as shown in Fig. 4, a partition plate is provided between the light emitting element pellet and the light receiving element pellet to block light. 32 can be prevented from leaking laterally.
第５図及び第６図は本発明の第２の実施例を示す斜視図
及び断面図である。光反射型センサにおいては、信号伝
達の媒体となる発光素子から発せられた光を効率良く受
光素子ペレットに到達させる為には、この第２の実施例
（特許請求の範囲第（２）項）に示す光反射型センサが
極めて有効である。FIGS. 5 and 6 are a perspective view and a sectional view showing a second embodiment of the present invention. In the light reflection type sensor, this second embodiment (Claim (2)) is necessary in order to efficiently make the light emitted from the light emitting element, which is a signal transmission medium, reach the light receiving element pellet. The light reflection type sensor shown in Figure 1 is extremely effective.
ｇ５図、第６図において、通常、放射状に広がる発光素
子ペレット５２から発せられた光をレンズ部５４２によ
シ集光し、さらに対象物５６のところで、焦点を結ぶ様
に設計することによ、９”ＯＮ”状態の時に受光素子ペ
レット５３に到達する光が極めて多くなり、Ｂ７’Ｈ比
が著しく向上する。In FIGS. g5 and 6, the light emitted from the light emitting element pellets 52 that spreads out radially is usually condensed onto the lens portion 542, and further focused at the object 56. , 9"ON" state, the amount of light reaching the light-receiving element pellet 53 is extremely large, and the B7'H ratio is significantly improved.
さらに、外来光を受けやすい所で使用する場合には、特
許請求の範囲第Ｃ３）項、第（４）項に示す光反射型セ
ンサが極めて有効である。すなわち、信号伝達の媒体と
なる光を赤外光にし外装ケースに赤外光の透過率が高く
、可視光を遮断する透過特性を持つ樹脂を用いれば、外
来光による影響を少なくすることが可能である。Further, when used in a place that is easily exposed to external light, the light reflection type sensor shown in claims C3) and (4) is extremely effective. In other words, if the signal transmission medium is infrared light and the exterior case is made of a resin that has high transmittance for infrared light and has transmission properties that block visible light, it is possible to reduce the effects of external light. It is.
発明の効果
本発明は以上の如く構成され、作用するものであシ、本
発明によれば、簡単な構造で製造コストが安く、シかも
動作特性の優れた光反射型センサを容易に得ることがで
きる。Effects of the Invention The present invention is constructed and operates as described above.According to the present invention, it is possible to easily obtain a light reflection type sensor with a simple structure, low manufacturing cost, and excellent operating characteristics. I can do it.
第１図は従来における光反射型センサの概略構造図、第
２図は対象物が移動した場合、その明部、暗部に対応し
た信号が伝わることを示す特性図、第３図及び第４図は
本発明に係る光反射型センサの第１の実施例を示す斜視
図及び断面図、第５図及び第６図は本発明に係る光反射
型センサの第２の実施例を示す斜視図及び断面図である
。
１１・・・発光素子、１２・・・受光素子、１３・・・
外装ケース、１４・・・対象物、１１・・・光の進路、
１４１・・・表面反射率の高い明部、１４２・・・表面
反射率の低い暗部、Ａ・・・対象物の動く向き、工・・
・信号が伝わる′″ＯＮ″ＯＮ″状態・信号が伝わらな
い１０？Ｆ″状態、３１・・・基板、３２・・・発光素
子ペレット、ア・・・受光素子ペレット、あ・・・外装
ケース、３４１・・・リベット状につぶれた突起物、蕊
・・・仕切板、あ・・・対象物、 １２・・・光の進路
。
５１・・・基板、５２・・・発光素子ペレット、５３・
・・受光素子ペレット、５４・・・外装ケース、５４１
・・・リベット状につぶれた突起物、５４２・・・レン
ズ部、５５・・・仕切）板、５６・・・対象物、１３・
・・光の進路特許出願人 日本電気株式会社
代 理 人 弁理士 熊谷雄太部
］４
第１図
第２図
第４図
第５図
第６図Figure 1 is a schematic structural diagram of a conventional light reflection type sensor, Figure 2 is a characteristic diagram showing that when an object moves, signals corresponding to bright and dark areas are transmitted, and Figures 3 and 4. 5 and 6 are perspective views and cross-sectional views showing a first embodiment of a light-reflecting sensor according to the present invention, and FIGS. 5 and 6 are perspective views and sectional views showing a second embodiment of a light-reflecting sensor according to the present invention. FIG. 11... Light emitting element, 12... Light receiving element, 13...
Exterior case, 14...Object, 11...Light path,
141...Bright area with high surface reflectance, 142...Dark area with low surface reflectance, A...Direction of object movement, work...
・'''ON'' state where the signal is transmitted ・10?F'' state where the signal is not transmitted, 31... Board, 32... Light emitting element pellet, A... Light receiving element pellet, A... Exterior case , 341...Rivet-shaped protrusion, stamen...partition plate, ah...object, 12...path of light. 51... Substrate, 52... Light emitting element pellet, 53...
...Photodetector pellet, 54...Exterior case, 541
... Rivet-shaped protrusion, 542 ... Lens section, 55 ... Partition) plate, 56 ... Target object, 13.
...Light Path Patent Applicant: NEC Co., Ltd. Agent: Patent Attorney Yutabe Kumagai] 4 Figure 1 Figure 2 Figure 4 Figure 5 Figure 6
Claims (4)
ット及び受光素子ペレットと、該発光素子及び受光素子
ペレットをおおい前記基板に固着された光透過性の外装
ケースとを具備したことを特徴とする光反射型センサ。(1) comprising a light-emitting element pellet and a light-receiving element pellet arranged adjacently on the same substrate, and a light-transmissive exterior case that covers the light-emitting element and the light-receiving element pellet and is fixed to the substrate; Features a light reflection type sensor.
を有することを更に特徴とする特許請求の範囲第（１）
項に記載の光反射型センサ。(2) Claim (1) further characterized in that at least a portion of the exterior case has a lens shape.
The light reflection type sensor described in section.
前記外装ケースに赤外光を透過させ可視光を遮断する透
過特性を持つ樹脂を用いたことを更に特徴とする特許請
求の範囲第（１）項に記載の光反射型センサ。(3) A light-emitting element pellet that emits infrared light is used, and the exterior case is made of a resin having transmission properties that transmit infrared light and block visible light. The light reflection type sensor according to item (1).
前記外装ケースに赤外光を透過させ可視光を遮断する透
過特性を持つ樹脂を用いたことを更に特徴とする特許請
求の範囲第（２）項に記載の光反射量センサ。(4) A light-emitting element pellet that emits infrared light is used, and the exterior case is made of a resin having transmission properties that transmit infrared light and block visible light. The light reflection amount sensor described in (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15153984A JPS6129743A (en) | 1984-07-21 | 1984-07-21 | Light reflection type sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15153984A JPS6129743A (en) | 1984-07-21 | 1984-07-21 | Light reflection type sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6129743A true JPS6129743A (en) | 1986-02-10 |
Family
ID=15520721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15153984A Pending JPS6129743A (en) | 1984-07-21 | 1984-07-21 | Light reflection type sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6129743A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5350922A (en) * | 1993-03-22 | 1994-09-27 | Robert Bartz | Underwater light scattering sensor |
| JP2009032571A (en) * | 2007-07-27 | 2009-02-12 | Toshiba Corp | Infrared ray touch switch device |
-
1984
- 1984-07-21 JP JP15153984A patent/JPS6129743A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5350922A (en) * | 1993-03-22 | 1994-09-27 | Robert Bartz | Underwater light scattering sensor |
| JP2009032571A (en) * | 2007-07-27 | 2009-02-12 | Toshiba Corp | Infrared ray touch switch device |
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