GB191517230A - Improvements in or relating to Light Signalling. - Google Patents

Improvements in or relating to Light Signalling.

Info

Publication number
GB191517230A
GB191517230A GB191517230DA GB191517230A GB 191517230 A GB191517230 A GB 191517230A GB 191517230D A GB191517230D A GB 191517230DA GB 191517230 A GB191517230 A GB 191517230A
Authority
GB
United Kingdom
Prior art keywords
relating
light signalling
polarized light
signalling
light
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.)
Expired
Application number
Inventor
Thomas Alexander Garrett
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB191517230A publication Critical patent/GB191517230A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50—Transmitters
    • H04B10/516—Details of coding or modulation
    • H04B10/532—Polarisation modulation

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)

Abstract

17,230. Garrett, T. A. Dec. R. Lamp and flash signals.-In signalling by means of polarized light, a sheet of mica is rotated at the sending station in the beam of plane polarized light, which is observed through a Nicol prism or other analyser at the receiving station.
GB191517230D 1915-12-08 1915-12-08 Improvements in or relating to Light Signalling. Expired GB191517230A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191517230T 1915-12-08

Publications (1)

Publication Number Publication Date
GB191517230A true GB191517230A (en) 1919-03-27

Family

ID=32651854

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191517230D Expired GB191517230A (en) 1915-12-08 1915-12-08 Improvements in or relating to Light Signalling.

Country Status (1)

Country Link
GB (1) GB191517230A (en)

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