JPS59152447U - raindrop sensor - Google Patents
raindrop sensorInfo
- Publication number
- JPS59152447U JPS59152447U JP4743283U JP4743283U JPS59152447U JP S59152447 U JPS59152447 U JP S59152447U JP 4743283 U JP4743283 U JP 4743283U JP 4743283 U JP4743283 U JP 4743283U JP S59152447 U JPS59152447 U JP S59152447U
- Authority
- JP
- Japan
- Prior art keywords
- light
- prism
- raindrop sensor
- transparent object
- pieces
- 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.)
- Granted
Links
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の雨滴センサの略解図、第２図〜第４図は
本考案の第一実施例を示し、第２図は略解図、第３図及
び第４図は作用の説明図、第５図〜第７図は本考案の第
二実施例を示し、第５図はスリット３ａ、５ｂの関係を
説明する説明図、第６図及び第７図は作用の説明図であ
る。
２・・・・・・透明体（ウィンドウガラス）、３・・・
・・・投光部、４・・・・・・受光部、６・・・・・・
プリズム、５ａ。
５ｂ、 ５ｃ・・・・・・プリズム片、７ａ、 ７
ｂ・・・・・・ギャップ部（エアギャップ部）。Fig. 1 is a schematic diagram of a conventional raindrop sensor, Figs. 2 to 4 show a first embodiment of the present invention, Fig. 2 is a schematic diagram, and Figs. 3 and 4 are explanatory diagrams of the operation. 5 to 7 show a second embodiment of the present invention, FIG. 5 is an explanatory diagram explaining the relationship between the slits 3a and 5b, and FIGS. 6 and 7 are explanatory diagrams of the operation. 2... Transparent body (window glass), 3...
...Light emitter, 4...Light receiver, 6...
Prism, 5a. 5b, 5c... Prism piece, 7a, 7
b...Gap part (air gap part).
Claims (1)
ると共に、該透明体の内面にプリズムを取付けて、光源
から光を透明体に照射し、眩光の光路が透明体の外面に
付着した雨滴等により変化したときこれを受光部で検知
するように構成した雨滴センサにおいて、前記プリズム
を複数個のプリズム片から形成し、該プリズム片間にギ
ャップ部を設けて、外光をプリズム片と該ギャップ部と
の境界面で全反射させて受光部に入射しないように構成
してなることを特徴とする雨滴センサ。A light-receiving section is placed inside a transparent object such as a window glass, and a prism is attached to the inner surface of the transparent object. Light from a light source is irradiated onto the transparent object, and the optical path of the dazzling light is reflected by raindrops attached to the outer surface of the transparent object. In the raindrop sensor, the prism is formed from a plurality of prism pieces, and a gap is provided between the prism pieces, so that external light is transmitted between the prism pieces and the raindrop sensor. A raindrop sensor characterized in that it is configured to cause total reflection at an interface with a gap part and prevent it from entering a light receiving part.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4743283U JPS59152447U (en) | 1983-03-31 | 1983-03-31 | raindrop sensor |
| US06/595,337 US4676638A (en) | 1983-03-31 | 1984-03-30 | Light-transmissible foreign object sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4743283U JPS59152447U (en) | 1983-03-31 | 1983-03-31 | raindrop sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59152447U true JPS59152447U (en) | 1984-10-12 |
| JPS6349714Y2 JPS6349714Y2 (en) | 1988-12-21 |
Family
ID=30177980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4743283U Granted JPS59152447U (en) | 1983-03-31 | 1983-03-31 | raindrop sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59152447U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018017546A (en) * | 2016-07-26 | 2018-02-01 | 株式会社デンソー | Rain sensor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19608648C1 (en) * | 1996-03-06 | 1997-10-23 | Bosch Gmbh Robert | Device for detecting wetting events on a pane |
-
1983
- 1983-03-31 JP JP4743283U patent/JPS59152447U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018017546A (en) * | 2016-07-26 | 2018-02-01 | 株式会社デンソー | Rain sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6349714Y2 (en) | 1988-12-21 |
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