FR811922A - Spectroscopic optical telegraph - Google Patents

Spectroscopic optical telegraph

Info

Publication number
FR811922A
FR811922A FR811922DA FR811922A FR 811922 A FR811922 A FR 811922A FR 811922D A FR811922D A FR 811922DA FR 811922 A FR811922 A FR 811922A
Authority
FR
France
Prior art keywords
spectrum
oct
stopped
telegraph
spectroscopic optical
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
Other languages
French (fr)
Inventor
Bruscaglioni
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
Application granted granted Critical
Publication of FR811922A publication Critical patent/FR811922A/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
    • H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Spectrometry And Color Measurement (AREA)

Abstract

489,357. Visible signalling apparatus. BRUSCAGLIONI, R. Oct. 20, 1936, No. 28534. Void. Convention date, Oct. 21, 1935. Drawings to Specification. [Class 118 (ii)] Light signals are given by forming a spectrum at the transmitting station, stopping out part or parts of the spectrum and recombining the light for transmission as a mixed beam. The portion of the spectrum stopped is arranged so as not appreciably to effect the colour of the mixed beam and the absence of the stopped rays is observed by spectroscopic examination at the receiving-station. The stopping screens may be operated from a keyboard and the received signals may be recorded by means of a spectrographic camera.
FR811922D 1935-10-21 1936-10-19 Spectroscopic optical telegraph Expired FR811922A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT489357X 1935-10-21

Publications (1)

Publication Number Publication Date
FR811922A true FR811922A (en) 1937-04-26

Family

ID=11269088

Family Applications (1)

Application Number Title Priority Date Filing Date
FR811922D Expired FR811922A (en) 1935-10-21 1936-10-19 Spectroscopic optical telegraph

Country Status (2)

Country Link
FR (1) FR811922A (en)
GB (1) GB489357A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2423254A (en) * 1944-08-25 1947-07-01 Rca Corp Frequency modulation light beam transmission
US2721259A (en) * 1952-05-31 1955-10-18 Raytheon Mfg Co Method and system for signalling having spectral modulation
AT400018B (en) * 1993-08-23 1995-09-25 Swarovski Tyrolit Schleif SAW ROPE

Also Published As

Publication number Publication date
GB489357A (en) 1938-07-22

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