JPS51130271A - Light beam type alarm - Google Patents

Light beam type alarm

Info

Publication number
JPS51130271A
JPS51130271A JP50055200A JP5520075A JPS51130271A JP S51130271 A JPS51130271 A JP S51130271A JP 50055200 A JP50055200 A JP 50055200A JP 5520075 A JP5520075 A JP 5520075A JP S51130271 A JPS51130271 A JP S51130271A
Authority
JP
Japan
Prior art keywords
light beam
beam type
type alarm
alarm
judge
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
Application number
JP50055200A
Other languages
Japanese (ja)
Inventor
Toshiyuki Masuda
Mikio Kondo
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 JP50055200A priority Critical patent/JPS51130271A/en
Publication of JPS51130271A publication Critical patent/JPS51130271A/en
Pending 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: A light beam type alarm which can judge the movement direction of an object with a single set of light receiver and can be installed with easy work, and never operates incorrectly during using.
COPYRIGHT: (C)1976,JPO&Japio
JP50055200A 1975-05-07 1975-05-07 Light beam type alarm Pending JPS51130271A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50055200A JPS51130271A (en) 1975-05-07 1975-05-07 Light beam type alarm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50055200A JPS51130271A (en) 1975-05-07 1975-05-07 Light beam type alarm

Publications (1)

Publication Number Publication Date
JPS51130271A true JPS51130271A (en) 1976-11-12

Family

ID=12992026

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50055200A Pending JPS51130271A (en) 1975-05-07 1975-05-07 Light beam type alarm

Country Status (1)

Country Link
JP (1) JPS51130271A (en)

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