JPS647446A - Touch switch - Google Patents
Touch switchInfo
- Publication number
- JPS647446A JPS647446A JP16352887A JP16352887A JPS647446A JP S647446 A JPS647446 A JP S647446A JP 16352887 A JP16352887 A JP 16352887A JP 16352887 A JP16352887 A JP 16352887A JP S647446 A JPS647446 A JP S647446A
- Authority
- JP
- Japan
- Prior art keywords
- light
- light guide
- received
- contact
- finger
- 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
- Switches Operated By Changes In Physical Conditions (AREA)
Abstract
PURPOSE:To aim at improvement of the accuracy in detection by causing the emission beam of a luminescent element to be incident upon a light guide and moved back and forth within the light guide while it is repeating reflection before it is received by a reception element, and then discriminating, according to the quantity of light thus received, whether a finger, raindrop or the like is in contact with the outside of the light guide or not. CONSTITUTION:On one end of a light guide 1 are provided a luminescent element 2 and a reception element 3, and on the other end is provided a reflecting interface 4 respectively, and then, the emission beam of the luminescent element 2 is caused to be incident upon the light guide 1 and moved back and forth within the light guide 1 while it is repeating reflection before it is received by the reception element 3. And then, according to the quantity of light thus received, it is discriminated whether a finger F, raindrop or the like is in contact with the outside of the light guide 1. Said quantity of light received is almost the same as the quantity of light incident if the finger F, raindrops and the like are out of contact with the outside of the light guide 1 at the time when the incident light is moved back and forth within the light guide 1, while, if the finger F is in contact with it, the light penetrates through the contact part so that the quantity of the light decreases by that rate. Thereby, the accuracy in detection can be improved.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16352887A JPS647446A (en) | 1987-06-30 | 1987-06-30 | Touch switch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16352887A JPS647446A (en) | 1987-06-30 | 1987-06-30 | Touch switch |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS647446A true JPS647446A (en) | 1989-01-11 |
Family
ID=15775584
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16352887A Pending JPS647446A (en) | 1987-06-30 | 1987-06-30 | Touch switch |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS647446A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0680860A2 (en) * | 1994-04-26 | 1995-11-08 | Omron Corporation | Sensor for detecting raindrops, wiper drive apparatus using the device, and vehicle using them |
US5694119A (en) * | 1993-12-28 | 1997-12-02 | Nec Corporation | Structure of a paging receiver and a message data storage control method |
-
1987
- 1987-06-30 JP JP16352887A patent/JPS647446A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5694119A (en) * | 1993-12-28 | 1997-12-02 | Nec Corporation | Structure of a paging receiver and a message data storage control method |
EP0680860A2 (en) * | 1994-04-26 | 1995-11-08 | Omron Corporation | Sensor for detecting raindrops, wiper drive apparatus using the device, and vehicle using them |
EP0680860A3 (en) * | 1994-04-26 | 1996-01-24 | Omron Tateisi Electronics Co | Sensor for detecting raindrops, wiper drive apparatus using the device, and vehicle using them. |
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