CS183859B1 - Directional flat-light or infraprotecting mains transmitters and recrivers arrangement - Google Patents

Directional flat-light or infraprotecting mains transmitters and recrivers arrangement

Info

Publication number
CS183859B1
CS183859B1 CS581276A CS581276A CS183859B1 CS 183859 B1 CS183859 B1 CS 183859B1 CS 581276 A CS581276 A CS 581276A CS 581276 A CS581276 A CS 581276A CS 183859 B1 CS183859 B1 CS 183859B1
Authority
CS
Czechoslovakia
Prior art keywords
recrivers
infraprotecting
mains
transmitters
arrangement
Prior art date
Application number
CS581276A
Other languages
Czech (cs)
Inventor
Tomas Vacha
Original Assignee
Tomas Vacha
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 Tomas Vacha filed Critical Tomas Vacha
Priority to CS581276A priority Critical patent/CS183859B1/en
Priority to PL20045177A priority patent/PL110999B2/en
Priority to DD20089177A priority patent/DD131409A1/en
Priority to DE19772740069 priority patent/DE2740069A1/en
Priority to GB3755177A priority patent/GB1561424A/en
Publication of CS183859B1 publication Critical patent/CS183859B1/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V8/00—Prospecting or detecting by optical means
    • G01V8/10—Detecting, e.g. by using light barriers
    • G01V8/20—Detecting, e.g. by using light barriers using multiple transmitters or receivers

Landscapes

  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Burglar Alarm Systems (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Optical Communication System (AREA)
CS581276A 1976-09-08 1976-09-08 Directional flat-light or infraprotecting mains transmitters and recrivers arrangement CS183859B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CS581276A CS183859B1 (en) 1976-09-08 1976-09-08 Directional flat-light or infraprotecting mains transmitters and recrivers arrangement
PL20045177A PL110999B2 (en) 1976-09-08 1977-08-25 System of directional transmitters and receivers for objects protection
DD20089177A DD131409A1 (en) 1976-09-08 1977-09-05 LIGHT OR INFRARED LOCKING SYSTEM
DE19772740069 DE2740069A1 (en) 1976-09-08 1977-09-06 OPTICAL AREA SECURITY SYSTEM
GB3755177A GB1561424A (en) 1976-09-08 1977-09-08 Light barrier protection apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS581276A CS183859B1 (en) 1976-09-08 1976-09-08 Directional flat-light or infraprotecting mains transmitters and recrivers arrangement

Publications (1)

Publication Number Publication Date
CS183859B1 true CS183859B1 (en) 1978-07-31

Family

ID=5403718

Family Applications (1)

Application Number Title Priority Date Filing Date
CS581276A CS183859B1 (en) 1976-09-08 1976-09-08 Directional flat-light or infraprotecting mains transmitters and recrivers arrangement

Country Status (5)

Country Link
CS (1) CS183859B1 (en)
DD (1) DD131409A1 (en)
DE (1) DE2740069A1 (en)
GB (1) GB1561424A (en)
PL (1) PL110999B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2842007B1 (en) * 2002-07-08 2004-08-27 Schneider Electric Ind Sa LIGHT BARRIER
US6872932B2 (en) 2003-07-23 2005-03-29 Schneider Electric Industries Sas Light curtain

Also Published As

Publication number Publication date
GB1561424A (en) 1980-02-20
DD131409A1 (en) 1978-06-21
PL200451A1 (en) 1978-04-10
DE2740069A1 (en) 1978-03-09
PL110999B2 (en) 1980-08-30

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