JPS63240082A - Photo-interrupter - Google Patents
Photo-interrupterInfo
- Publication number
- JPS63240082A JPS63240082A JP62075307A JP7530787A JPS63240082A JP S63240082 A JPS63240082 A JP S63240082A JP 62075307 A JP62075307 A JP 62075307A JP 7530787 A JP7530787 A JP 7530787A JP S63240082 A JPS63240082 A JP S63240082A
- Authority
- JP
- Japan
- Prior art keywords
- resin body
- light
- transparent resin
- photodetector
- emitting device
- 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
- 229920005989 resin Polymers 0.000 claims abstract description 45
- 239000011347 resin Substances 0.000 claims abstract description 45
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 239000003822 epoxy resin Substances 0.000 abstract description 4
- 229920000647 polyepoxide Polymers 0.000 abstract description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract description 2
- 238000001746 injection moulding Methods 0.000 abstract description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 abstract description 2
- 230000003287 optical effect Effects 0.000 abstract 2
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Landscapes
- Photo Coupler, Interrupter, Optical-To-Optical Conversion Devices (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明はホトインタラプタに関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a photointerrupter.
ホトインタラプタは、自動制御装置のセンサとして広く
使用されている。Photointerrupters are widely used as sensors in automatic control equipment.
第２図（ａ）および（ｂ）は従来のホトインタラプタの
一例を示す切欠平面図およびＢ−Ｂ’線断面図である。FIGS. 2(a) and 2(b) are a cutaway plan view and a sectional view taken along the line B-B' showing an example of a conventional photointerrupter.
第２図（ａ）および（ｂ）に示すように、外部リード１
に接続された内部リード２にそれぞれ載置された発光素
子３および受光素子４が同一軸上で所定の間隔に保持さ
れ、発光素子３および受光素子４を含んで一体化するよ
うに透明樹脂体６で封止され、透明樹脂体６が表面を黒
色又は黒色に近い不透光性樹脂体９でモールド封止され
る。次に透明樹脂体６および不透光性樹脂体９の中央部
が切削されて遮へい物挿入溝８が形成され、同時に発光
素子３が封止されている透明樹脂体６と受光素子４が封
止されている透明樹脂体６が分離され、ホトインタラプ
タが構成される。As shown in FIGS. 2(a) and (b), the external lead 1
The light-emitting element 3 and the light-receiving element 4 mounted on the internal leads 2 connected to the The surface of the transparent resin body 6 is molded and sealed with a black or nearly black non-transparent resin body 9. Next, the center portions of the transparent resin body 6 and non-transparent resin body 9 are cut to form a shield insertion groove 8, and at the same time, the transparent resin body 6 in which the light emitting element 3 is sealed and the light receiving element 4 are sealed. The fixed transparent resin body 6 is separated to form a photointerrupter.
上述した従来のホトインタラプタは、発光素子から放射
される光が直接受光素子に入射される以外は透明樹脂体
と不透光性樹脂体との界面で吸収されるか反射されて大
部分が受光素子へ到達せず、光の伝達効率が低いため、
センサとして動作させたときのＳＮ比が小さく、回路設
計も難しくなる等の問題点がある。In the conventional photointerrupter described above, most of the light emitted from the light emitting element is absorbed or reflected at the interface between the transparent resin body and the opaque resin body, except that the light is directly incident on the light receiving element. Because the light does not reach the element and the transmission efficiency of light is low,
When operated as a sensor, the signal-to-noise ratio is small and circuit design becomes difficult.
本発明の目的は、光の伝達効率の高いホトインタラプタ
を提供することにある。An object of the present invention is to provide a photointerrupter with high light transmission efficiency.
本発明のホトインタラプタは、一対の発光素子および受
光素子と、前記発光素子と前記受光素子とを所定の間隔
で保持するように封止し且つ前記発光素子から放射され
る光を反射させ前記受光素子に集束させるための反射曲
面を有する透明樹脂体と、前記透明樹脂体を被覆して封
止し且つ前記曲面で前記□光を反射させる白色の不透光
性樹脂体と前記発光素子と受光素子との中央部の前記透
明樹脂体および前記不透光性樹脂体に形成された遮へい
物挿入溝とを含んで構成される。The photointerrupter of the present invention includes a pair of light-emitting element and light-receiving element, the light-emitting element and the light-receiving element are sealed so as to be held at a predetermined interval, and the light emitted from the light-emitting element is reflected and the light-receiving element is a transparent resin body having a reflective curved surface for focusing on the element; a white opaque resin body that covers and seals the transparent resin body and reflects the □ light on the curved surface; the light emitting element; and the light receiving element. It is configured to include a shield insertion groove formed in the transparent resin body and the non-transparent resin body at the center of the element.
次に、本発明の実施例について図面を参照して説明する
。Next, embodiments of the present invention will be described with reference to the drawings.
第１図（ａ）および（ｂ）は本発明の一実施例を示す切
欠平面図およびＡ−Ａ’線断面図である。FIGS. 1(a) and 1(b) are a cutaway plan view and a cross-sectional view taken along the line AA', showing an embodiment of the present invention.
第１図（ａ）および（ｂ）に示すように、一対の発光素
子３および受光素子４が外部リード１に接続された内部
リード２のそれぞれに載置され、同一軸上に所定の間隔
で相対するように保持される０次に、発光素子３から放
射される光を反射し受光素子４へ集束させる反射曲面５
を有し、発光素子３と受光素子４とを一体化するように
光透過性エポキシ樹脂を射出成形して透明樹脂体６を形
成する。次に、透明樹脂体６とほぼ同じ熱膨張率を有し
かつ酸化チタニウムを含有する白色のエポキシ樹脂の不
透光性樹脂体７で透明樹脂体６の全表面を被覆するよう
にモールド封止する。次に、透明樹脂体６および不透光
性樹脂体７の中央部を切削して遮へい物挿入溝８を形成
し、同時に発光素子３が封止されている透明樹脂体６と
受光素子４が封止されている透明樹脂体６とを互いに分
離して、ホトインタラプタを構成する。As shown in FIGS. 1(a) and (b), a pair of light-emitting elements 3 and light-receiving elements 4 are placed on each of the inner leads 2 connected to the outer leads 1, and spaced apart at a predetermined interval on the same axis. A reflective curved surface 5 that reflects the light emitted from the light-emitting element 3 and focuses it on the light-receiving element 4 is held opposite to the zero-order reflective surface 5.
A transparent resin body 6 is formed by injection molding a light-transmitting epoxy resin so as to integrate the light emitting element 3 and the light receiving element 4. Next, the transparent resin body 6 is mold-sealed so as to cover the entire surface thereof with a non-transparent resin body 7 made of a white epoxy resin that has almost the same coefficient of thermal expansion as the transparent resin body 6 and contains titanium oxide. do. Next, the center portions of the transparent resin body 6 and non-transparent resin body 7 are cut to form a shield insertion groove 8, and at the same time, the transparent resin body 6 in which the light emitting element 3 is sealed and the light receiving element 4 are cut. The sealed transparent resin body 6 is separated from each other to form a photointerrupter.
以上説明したように本発明は、透明樹脂体に発光素子か
ら放射される光を反射させて受光素子へ集束させるため
の反射曲面を備え、透明樹脂体を覆う不透光性樹脂体を
白色樹脂で形成して反射曲面の反射率を高めることによ
り、従来のホトインタラプタに比べて光伝達効率を５０
〜２００％改′ 善できる効果がある。As explained above, the present invention provides a transparent resin body with a reflective curved surface for reflecting light emitted from a light emitting element and focusing it on a light receiving element, and a non-transparent resin body covering the transparent resin body is made of white resin. By increasing the reflectance of the reflective curved surface, the light transmission efficiency has been increased by 50% compared to conventional photointerrupters.
It has the effect of improving by ~200%.
第１図（ａ）および（ｂ）は本発明の一実施例を示す切
欠平面図およびＡ−Ａ’線断面図、第２図（ａ）および
（ｂ）は従来のホトインタラプタの一例を示す切欠平面
図およびＢ−Ｂ’線断面図である。
１・・・外部リード、２・・・内部リード、３・・・発
光素子、４・・・受光素子、５・・・反射曲面、６・・
・透明樹脂体、７・・・不透光性樹脂体、８・・・遮へ
い物挿入溝、９・・・不透光性樹脂体。
代理人 弁理士 内 原 音 。
＄ １ 図
−￥；２１！ＩFIGS. 1(a) and (b) are a cutaway plan view and a cross-sectional view taken along the line A-A' showing an embodiment of the present invention, and FIGS. 2(a) and (b) are an example of a conventional photointerrupter. They are a notch top view and a BB' line sectional view. DESCRIPTION OF SYMBOLS 1... External lead, 2... Internal lead, 3... Light emitting element, 4... Light receiving element, 5... Reflective curved surface, 6...
- Transparent resin body, 7... Opaque resin body, 8... Shield insertion groove, 9... Opaque resin body. Agent Patent Attorney Oto Uchihara. $1 Figure-￥;21! I
Claims (1)
受光素子とを所定の間隔で保持するように封止し且つ前
記発光素子から放射される光を反射させ前記受光素子に
集束させるための反射曲面を有する透明樹脂体と、前記
透明樹脂体を被覆して封止し且つ前記曲面で前記光を反
射させる白色の不透光性樹脂体と前記発光素子と受光素
子との中央部の前記透明樹脂体および前記不透光性樹脂
体に形成された遮へい物挿入溝とを含むことを特徴とす
るホトインタラプタ。a pair of light emitting element and light receiving element; the light emitting element and the light receiving element are sealed so as to be held at a predetermined interval; and a reflection device for reflecting light emitted from the light emitting element and focusing it on the light receiving element. a transparent resin body having a curved surface; a white opaque resin body that covers and seals the transparent resin body and reflects the light on the curved surface; and the transparent resin body in the center of the light emitting element and the light receiving element. A photointerrupter comprising a resin body and a shield insertion groove formed in the non-transparent resin body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62075307A JPS63240082A (en) | 1987-03-27 | 1987-03-27 | Photo-interrupter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62075307A JPS63240082A (en) | 1987-03-27 | 1987-03-27 | Photo-interrupter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63240082A true JPS63240082A (en) | 1988-10-05 |
Family
ID=13572464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62075307A Pending JPS63240082A (en) | 1987-03-27 | 1987-03-27 | Photo-interrupter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63240082A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH033758U (en) * | 1989-05-31 | 1991-01-16 | ||
| US5233208A (en) * | 1990-03-23 | 1993-08-03 | U.S. Philips Corp. | Photocoupler surrounded by transparent and reflective resins in a preformed pin housing |
| WO2008073682A1 (en) * | 2006-12-07 | 2008-06-19 | 3M Innovative Properties Company | Light reflecting resin composition, light emitting apparatus and optical display apparatus |
| US7518098B2 (en) * | 2004-07-30 | 2009-04-14 | Odelo Gmbh | Optoelectronic dust sensor device |
-
1987
- 1987-03-27 JP JP62075307A patent/JPS63240082A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH033758U (en) * | 1989-05-31 | 1991-01-16 | ||
| US5233208A (en) * | 1990-03-23 | 1993-08-03 | U.S. Philips Corp. | Photocoupler surrounded by transparent and reflective resins in a preformed pin housing |
| US7518098B2 (en) * | 2004-07-30 | 2009-04-14 | Odelo Gmbh | Optoelectronic dust sensor device |
| WO2008073682A1 (en) * | 2006-12-07 | 2008-06-19 | 3M Innovative Properties Company | Light reflecting resin composition, light emitting apparatus and optical display apparatus |
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