JPH0360174A - Photocoupler - Google Patents
PhotocouplerInfo
- Publication number
- JPH0360174A JPH0360174A JP1194171A JP19417189A JPH0360174A JP H0360174 A JPH0360174 A JP H0360174A JP 1194171 A JP1194171 A JP 1194171A JP 19417189 A JP19417189 A JP 19417189A JP H0360174 A JPH0360174 A JP H0360174A
- Authority
- JP
- Japan
- Prior art keywords
- detection distance
- cover
- changing
- light
- optimum detection
- 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
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〕
本発明はホトカプラに係り、特にファクシミリの記録紙
検知に好敵な任意の最適検知距離を得る反射形ホトカプ
ラに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a photocoupler, and more particularly to a reflective photocoupler that obtains an arbitrary optimum detection distance suitable for detecting recording paper in a facsimile.
従来の技術では特開昭６０−２８２７９号のように指向
性を向上する事を目的とした構造となっていた。しかし
、検知物体と検知素子との距離に変更を生じた場合素子
外形を変更する必要が生じる。又、発光素子と受光素子
を組み合わせたものでは各々の素子の取付角度を変えね
ばならず、これもホトカプラの外形に影響を及ぼすこと
となる。Conventional technology has a structure aimed at improving directivity, as disclosed in Japanese Patent Application Laid-Open No. 60-28279. However, when the distance between the sensing object and the sensing element changes, it becomes necessary to change the external shape of the element. Furthermore, in a combination of a light emitting element and a light receiving element, the mounting angle of each element must be changed, which also affects the external shape of the photocoupler.
以上の様に外形を変えずに最適検知距離を変える点につ
いては配慮されていなかった。As mentioned above, no consideration was given to changing the optimum detection distance without changing the external shape.
上記従来技術は最適検知距離の変更について配慮がされ
ておらず、最適検知距離を変更する場合。The above conventional technology does not consider changing the optimum detection distance, and when changing the optimum detection distance.
ホトカプラの形状を変更する必要が生じ外形が変る等の
問題があった。There were problems such as the need to change the shape of the photocoupler, resulting in a change in external shape.
本発明の目的はホトカプラの外形を変えずに最適検知距
離を変えることにある。An object of the present invention is to change the optimum detection distance without changing the outer shape of the photocoupler.
上記目的は、ホトカプラのカバーに光屈折手段を設け、
これを変更することにより達成される。The above purpose is to provide a light refraction means on the photocoupler cover,
This can be achieved by changing this.
光屈折手段を設けたカバーは、光屈折角度を変更するこ
とで所定の最適検知距離を提供する。The cover provided with light refraction means provides a predetermined optimum sensing distance by changing the light refraction angle.
それによって発光素子、受光素子の取付角度を変更する
必要がなくなるのでホトカプラの外形に影響を及ぼすこ
とがない。This eliminates the need to change the mounting angles of the light-emitting element and the light-receiving element, so that the external shape of the photocoupler is not affected.
以下、本発明の一実施例を第１〜３図により説明する。 An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.
２、発光素子及び４．受光素子は３．ケースに納められ
ている。１．カバーはケース内に塵埃が混入するのを防
止すると共に光路の役目を果たしている１通常１は光屈
折手段を有さないので最適検知距離は２及び４の取付角
度で決定される。２及び４の取付角度は特に５．検知物
体が接近した場合大きくする６要がある為３の形状に影
響を及ぼすことがある。2. Light emitting element and 4. The light receiving element is 3. It is housed in a case. 1. The cover prevents dust from entering the case and also serves as an optical path. Since the cover 1 normally does not have a light refracting means, the optimum detection distance is determined by the mounting angles 2 and 4. The mounting angles of 2 and 4 are particularly 5. When a sensing object approaches, there is a need for 6 to enlarge, which may affect the shape of 3.
本実施例によれば１の光屈折効果により、最適検知距離
を変更するに１を取りかえるだけでよい。According to this embodiment, due to the light refraction effect of 1, it is only necessary to replace 1 to change the optimum detection distance.
例えば検知距離が第１図より近い場合第２図の様に光屈
折角度を深くし、検知距離が第１図より遠い場合第３図
の様に光屈折角度を浅くすることで最適な検知距離が得
られる。For example, if the detection distance is shorter than that shown in Figure 1, the angle of light refraction should be made deeper as shown in Figure 2, and if the detection distance is farther than that shown in Figure 1, the angle of light refraction should be made shallower as shown in Figure 3 to find the optimal detection distance. is obtained.
以上の様にホトカプラのシリーズ化が容易である。As described above, it is easy to create a series of photocouplers.
本発明によれば、ホトカプラの最適検知距離を変更して
も外形に影響を及ぼさないので、最適検知距離を容易に
変更できる。According to the present invention, changing the optimum detection distance of the photocoupler does not affect the outer shape, so the optimum detection distance can be easily changed.
第１〜第３図は本発明の一実施例の断面図である。 １・・・カバー ２・・・発光素子、 ３・・・ケース、 ４・・・受光素子。 嶌 ！ 芭 纂 舅 察 聞 ！−−−カノで− ２−発光素子 ３− ケース 手−受光−１ｋ子 ５−検知物体 Ｌ２＜ＬＩ ＣＡ２＜よｔ Ｌ３＞Ｌｌ べ３ ＞Ｃ１１ 1 to 3 are cross-sectional views of one embodiment of the present invention. 1...Cover 2... light emitting element, 3...Case, 4... Light receiving element. Shima ! Basa thread Father-in-law Inspection Listen ! ---In Kano- 2-Light emitting element 3- Case Hand - Light receiving - 1k child 5- Sensing object L2<LI CA2<yot L3>Ll Be3>C11
Claims (1)
知距離を任意に設定できる様光屈折手段を有する、カバ
ーを設けたことを特徴とするホトカプラ。1. A reflective photocoupler having a cover, characterized in that the cover is provided with a light refraction means so that the optimum detection distance can be arbitrarily set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1194171A JPH0360174A (en) | 1989-07-28 | 1989-07-28 | Photocoupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1194171A JPH0360174A (en) | 1989-07-28 | 1989-07-28 | Photocoupler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0360174A true JPH0360174A (en) | 1991-03-15 |
Family
ID=16320111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1194171A Pending JPH0360174A (en) | 1989-07-28 | 1989-07-28 | Photocoupler |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0360174A (en) |
-
1989
- 1989-07-28 JP JP1194171A patent/JPH0360174A/en active Pending
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