JPS5686357A - Direction detector - Google Patents
Direction detectorInfo
- Publication number
- JPS5686357A JPS5686357A JP16334479A JP16334479A JPS5686357A JP S5686357 A JPS5686357 A JP S5686357A JP 16334479 A JP16334479 A JP 16334479A JP 16334479 A JP16334479 A JP 16334479A JP S5686357 A JPS5686357 A JP S5686357A
- Authority
- JP
- Japan
- Prior art keywords
- subject
- photodetector
- receives
- reflected light
- range
- 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
- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
PURPOSE: To ensure a wide-range detection for the subject to be detected, by forming the center part of the condensing optical element such as a convex lens or concave mirror and producing two or more focuses.
CONSTITUTION: If the subject 8 to be detected shifts from A to B, the subject 8 is within the irradiating range l1 of the light given from the light emitting element 31 and at the position A. Thus the photodetector 5 receives the reflected light of the element 31. Then the subject 8 is at the overlap position of the irradiating ranges of the light emitting elements 31 and 32, and accordingly the photodetector 5 receives the reflected light of the elements 31 and 32 each. And the photodetector 5 receives the reflected light of the element 32 when the subject 8 is at the position B. Accordingly, the photodetector 5 receives successively the ranges l1, l1 and then l2 and l2 to identify the reflected light. Thus the shift of the subject 8 is decided. In such way, a detection is possible over a wide range.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16334479A JPS5686357A (en) | 1979-12-14 | 1979-12-14 | Direction detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16334479A JPS5686357A (en) | 1979-12-14 | 1979-12-14 | Direction detector |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5686357A true JPS5686357A (en) | 1981-07-14 |
JPS639185B2 JPS639185B2 (en) | 1988-02-26 |
Family
ID=15772083
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16334479A Granted JPS5686357A (en) | 1979-12-14 | 1979-12-14 | Direction detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5686357A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58218672A (en) * | 1982-06-15 | 1983-12-19 | Tokyo Electric Co Ltd | Infrared-ray detecting device of moving body |
JPS59155573U (en) * | 1983-04-04 | 1984-10-18 | アツミ電気株式会社 | automatic door |
JPS59193382A (en) * | 1983-04-18 | 1984-11-01 | Sogo Keibi Hoshiyou Kk | Detecting apparatus for invader |
JPS6433685U (en) * | 1987-08-20 | 1989-03-02 |
-
1979
- 1979-12-14 JP JP16334479A patent/JPS5686357A/en active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58218672A (en) * | 1982-06-15 | 1983-12-19 | Tokyo Electric Co Ltd | Infrared-ray detecting device of moving body |
JPS59155573U (en) * | 1983-04-04 | 1984-10-18 | アツミ電気株式会社 | automatic door |
JPS59193382A (en) * | 1983-04-18 | 1984-11-01 | Sogo Keibi Hoshiyou Kk | Detecting apparatus for invader |
JPS6433685U (en) * | 1987-08-20 | 1989-03-02 |
Also Published As
Publication number | Publication date |
---|---|
JPS639185B2 (en) | 1988-02-26 |
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