PL110999B2 - System of directional transmitters and receivers for objects protection - Google Patents

System of directional transmitters and receivers for objects protection

Info

Publication number
PL110999B2
PL110999B2 PL20045177A PL20045177A PL110999B2 PL 110999 B2 PL110999 B2 PL 110999B2 PL 20045177 A PL20045177 A PL 20045177A PL 20045177 A PL20045177 A PL 20045177A PL 110999 B2 PL110999 B2 PL 110999B2
Authority
PL
Poland
Prior art keywords
receivers
directional transmitters
objects
protection
objects protection
Prior art date
Application number
PL20045177A
Other languages
English (en)
Other versions
PL200451A1 (pl
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 filed Critical
Publication of PL200451A1 publication Critical patent/PL200451A1/pl
Publication of PL110999B2 publication Critical patent/PL110999B2/xx

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)
PL20045177A 1976-09-08 1977-08-25 System of directional transmitters and receivers for objects protection PL110999B2 (en)

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 (2)

Publication Number Publication Date
PL200451A1 PL200451A1 (pl) 1978-04-10
PL110999B2 true PL110999B2 (en) 1980-08-30

Family

ID=5403718

Family Applications (1)

Application Number Title Priority Date Filing Date
PL20045177A PL110999B2 (en) 1976-09-08 1977-08-25 System of directional transmitters and receivers for objects protection

Country Status (5)

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

Families Citing this family (2)

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

Also Published As

Publication number Publication date
DD131409A1 (de) 1978-06-21
GB1561424A (en) 1980-02-20
PL200451A1 (pl) 1978-04-10
DE2740069A1 (de) 1978-03-09
CS183859B1 (en) 1978-07-31

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Legal Events

Date Code Title Description
LAPS Decisions on the lapse of the protection rights

Effective date: 20050115