JPH02138777A - Optical sensor - Google Patents
Optical sensorInfo
- Publication number
- JPH02138777A JPH02138777A JP1264908A JP26490889A JPH02138777A JP H02138777 A JPH02138777 A JP H02138777A JP 1264908 A JP1264908 A JP 1264908A JP 26490889 A JP26490889 A JP 26490889A JP H02138777 A JPH02138777 A JP H02138777A
- Authority
- JP
- Japan
- Prior art keywords
- light
- optical sensor
- light emitting
- emitting element
- light detecting
- 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
- 230000003287 optical effect Effects 0.000 title claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract 2
- 239000000428 dust Substances 0.000 abstract description 6
- 239000010687 lubricating oil Substances 0.000 abstract description 4
- 239000012780 transparent material Substances 0.000 abstract description 2
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 4
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000003921 oil Substances 0.000 description 2
- 241000951471 Citrus junos Species 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000012120 mounting media Substances 0.000 description 1
Landscapes
- Photo Coupler, Interrupter, Optical-To-Optical Conversion Devices (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、光学センサーの発光素子と受光素子を保持す
るケースの改善に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an improvement of a case for holding a light emitting element and a light receiving element of an optical sensor.
光学センサーは、一般に一対の発光素子と受光素子を対
向して保持するよう樹脂製のケースに組み込まれた形で
構成され、例えば、走行する紙片や金属片等を光学的に
検出するなど幅広い用途があるが、センサーの実装位置
によっては例えば機構部の潤滑油の付着侵入、または、
塵埃の付着等によりセンサーの検出能力が阻害されると
いう問題がある。従来技術としては、シャープ部品カタ
ログ（形式ＧＩ） Ｌ Ａ ２０ ）に記載のように防
塵カバー付光学センサがあるが、油侵入防止については
配慮されていなかった。Optical sensors generally consist of a pair of light-emitting elements and light-receiving elements that are housed in a resin case that holds them facing each other, and are used in a wide range of applications, such as optically detecting moving pieces of paper or metal. However, depending on the mounting position of the sensor, for example, lubricating oil may adhere to and enter the mechanism, or
There is a problem in that the detection ability of the sensor is inhibited by adhesion of dust or the like. As a conventional technique, there is an optical sensor with a dustproof cover as described in the Sharp parts catalog (model GI) LA20), but no consideration was given to preventing oil intrusion.
本発明の目的は、前記したように潤滑油やμｓ埃等が光
学センサーの発光素子や受光素子に付着することを防止
する構造の光学センサーを提供することにある。As described above, an object of the present invention is to provide an optical sensor having a structure that prevents lubricating oil, μs dust, etc. from adhering to the light emitting element and the light receiving element of the optical sensor.
本発明は、光学センサーの発光素子と受光素子を保持す
るケースの改善に関するもので、従来は、センサーのケ
ースは不透明な樹脂で製作し、ケースの内部に発光素子
、受光素子を封入していたものを、ケース自身を透明な
樹脂で製作した光学センサーとするものである。The present invention relates to the improvement of a case that holds the light emitting element and light receiving element of an optical sensor. Conventionally, the case of the sensor was made of opaque resin, and the light emitting element and the light receiving element were sealed inside the case. The device is an optical sensor whose case itself is made of transparent resin.
以下、本発明の実施例を以下に説明する。 Examples of the present invention will be described below.
第４図は、−殻内な透過形光学センサーの外観である。FIG. 4 is an external view of the in-shell transmission type optical sensor.
第５図は、光学センサーの断面構成である。発光窓４、
受光窓５を有するケース１に受光素子２と受光素子３が
組み込まれ、封入剤６で。FIG. 5 is a cross-sectional configuration of the optical sensor. Luminous window 4,
A light receiving element 2 and a light receiving element 3 are assembled into a case 1 having a light receiving window 5, and a mounting medium 6 is used.
固定封入されている。第６図は、第５図の発光窓４と受
光窓５にガラス抜７を接着し、気密性を持たせた一例で
あるが、ガラス７を接着しても、接着面の隙間から油や
塵埃の内部に侵入してしまうという欠点がある。Fixedly enclosed. Fig. 6 shows an example in which a glass cutout 7 is glued to the light emitting window 4 and light receiving window 5 in Fig. 5 to provide airtightness. It has the disadvantage that dust can get inside.
このためケース自体を透明な材質で、発光窓や受光窓の
ないケース１１に改善した一実施例が第１図である。こ
の数件で、極めて高い気密性を得ることができる。なお
、用途によって、光量の制限が必要となる場合でも第２
図のようにスリット１：３を有する不透明な庶光板１２
をケース１１の発光側あるいは受光側に貼り付けること
で口Ｉ能となる。また１本発明は、透過形光学センサー
だけでなく、第３図に一例を示すように反射形センサー
にも実施できる。For this reason, FIG. 1 shows an example of an improved case 11 in which the case itself is made of a transparent material and has no light-emitting window or light-receiving window. With these few steps, extremely high airtightness can be achieved. Note that even if it is necessary to limit the amount of light depending on the application, the second
Opaque general light plate 12 with slits 1:3 as shown
By pasting it on the light-emitting side or the light-receiving side of the case 11, it becomes functional. Furthermore, the present invention can be implemented not only in a transmission type optical sensor but also in a reflection type sensor, as shown in FIG. 3 as an example.
〔発明の効果〕
本発明によれば、光学センサー内部の発光素子や受光素
子への油、塵埃の侵入が防止できるので、センサーの故
障を低減することが出来る。[Effects of the Invention] According to the present invention, it is possible to prevent oil and dust from entering the light-emitting element and the light-receiving element inside the optical sensor, thereby reducing failures of the sensor.
第１図及び第２図は、本発明の一実施例の透過形光学セ
ンサーの断面図及び遮光板の説明図、第７３図は、本発
明による反射形光学センサーの実施例の断面図、第４図
は、−殻内な透過形光学センサーの外観図、第５図及び
第６図は断面図である。
１１・・・ケース、 １２・・・遮光板、 ２・・
・発光素子、３・・・受光素子。
第１日
第２図
勇づＺ
第４図
あ５図
第６２1 and 2 are a sectional view and an explanatory diagram of a light shielding plate of a transmission type optical sensor according to an embodiment of the present invention, and FIG. 73 is a sectional view of an embodiment of a reflection type optical sensor according to the present invention. FIG. 4 is an external view of the in-shell transmission type optical sensor, and FIGS. 5 and 6 are cross-sectional views. 11... Case, 12... Light shielding plate, 2...
- Light emitting element, 3... Light receiving element. Day 1 Figure 2 Yuzu Z Figure 4 A5 Figure 62
Claims (1)
た構造の光学センサーに於いて、発光素子と受光素子を
保持するケースを光を透過可能な材質で構成したことを
特徴とする光学センサー。1. An optical sensor having a structure in which one or more pairs of light-emitting elements and light-receiving elements are held at regular intervals, characterized in that the case holding the light-emitting element and the light-receiving element is made of a material that can transmit light. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1264908A JPH02138777A (en) | 1989-10-13 | 1989-10-13 | Optical sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1264908A JPH02138777A (en) | 1989-10-13 | 1989-10-13 | Optical sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02138777A true JPH02138777A (en) | 1990-05-28 |
Family
ID=17409886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1264908A Pending JPH02138777A (en) | 1989-10-13 | 1989-10-13 | Optical sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02138777A (en) |
-
1989
- 1989-10-13 JP JP1264908A patent/JPH02138777A/en active Pending
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