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DK112642B - Control system with modulated light. - Google Patents

Control system with modulated light.

Info

Publication number
DK112642B
DK112642B DK41066A DK41066A DK112642B DK 112642 B DK112642 B DK 112642B DK 41066 A DK41066 A DK 41066A DK 41066 A DK41066 A DK 41066A DK 112642 B DK112642 B DK 112642B
Authority
DK
Denmark
Prior art keywords
control system
modulated light
modulated
light
control
Prior art date
Application number
DK41066A
Other languages
Danish (da)
Inventor
K Johansen
Original Assignee
Servodan As
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 Servodan As filed Critical Servodan As
Priority to DK41066A priority Critical patent/DK112642B/en
Priority to SE79367A priority patent/SE324726B/xx
Priority to GB342867A priority patent/GB1138115A/en
Publication of DK112642B publication Critical patent/DK112642B/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/181—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems
    • G08B13/183—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems by interruption of a radiation beam or barrier
    • G08B13/184—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems by interruption of a radiation beam or barrier using radiation reflectors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
DK41066A 1966-01-26 1966-01-26 Control system with modulated light. DK112642B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DK41066A DK112642B (en) 1966-01-26 1966-01-26 Control system with modulated light.
SE79367A SE324726B (en) 1966-01-26 1967-01-19
GB342867A GB1138115A (en) 1966-01-26 1967-01-24 Controlling system using modulated light

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK41066A DK112642B (en) 1966-01-26 1966-01-26 Control system with modulated light.

Publications (1)

Publication Number Publication Date
DK112642B true DK112642B (en) 1968-12-30

Family

ID=8093203

Family Applications (1)

Application Number Title Priority Date Filing Date
DK41066A DK112642B (en) 1966-01-26 1966-01-26 Control system with modulated light.

Country Status (3)

Country Link
DK (1) DK112642B (en)
GB (1) GB1138115A (en)
SE (1) SE324726B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2442457A1 (en) * 1978-11-27 1980-06-20 Optel Detection of objects passing through light beam - uses two beams of different wavelengths to eliminate erroneous reflections and has optical filter on reflector support cap
SE456952B (en) * 1982-12-16 1988-11-14 Innovationsteknik Inst Ab MICRODATOR CONTROL LIGHT RIDAA
DE102014101702B3 (en) * 2014-02-12 2014-12-31 Designhütte GmbH winder

Also Published As

Publication number Publication date
GB1138115A (en) 1968-12-27
SE324726B (en) 1970-06-08

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