JPS5686357A - Direction detector - Google Patents

Direction detector

Info

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
Application number
JP16334479A
Other languages
Japanese (ja)
Other versions
JPS639185B2 (en
Inventor
Takashi Yamamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP16334479A priority Critical patent/JPS5686357A/en
Publication of JPS5686357A publication Critical patent/JPS5686357A/en
Publication of JPS639185B2 publication Critical patent/JPS639185B2/ja
Granted legal-status Critical Current

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
JP16334479A 1979-12-14 1979-12-14 Direction detector Granted JPS5686357A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (4)

* Cited by examiner, † Cited by third party
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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