FR2389226A1 - Indicateur optique - Google Patents

Indicateur optique

Info

Publication number
FR2389226A1
FR2389226A1 FR7807984A FR7807984A FR2389226A1 FR 2389226 A1 FR2389226 A1 FR 2389226A1 FR 7807984 A FR7807984 A FR 7807984A FR 7807984 A FR7807984 A FR 7807984A FR 2389226 A1 FR2389226 A1 FR 2389226A1
Authority
FR
France
Prior art keywords
electron gun
tube
sides
indicator system
phosphor coating
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.)
Withdrawn
Application number
FR7807984A
Other languages
English (en)
Inventor
Ralph Desmond Nixon
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.)
Teledyne UK Ltd
Original Assignee
English Electric Valve Co Ltd
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 English Electric Valve Co Ltd filed Critical English Electric Valve Co Ltd
Publication of FR2389226A1 publication Critical patent/FR2389226A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/095—Traffic lights
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2111/00—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)

Abstract

L'invention a pour objet un indicateur optique. L'indicateur comprend une enveloppe sous vide 1 contenant une source d'électrons 2. Ces derniers sont accélérés de façon à bombarder une couche fluorescente 4 ayant une surface arrière conductrice 5. La lumière visible émise par la couche fluorescente est transmise par une fenêtre transparente 6. L'indicateur peut être utilisé comme signal lumineux pour le contrôle du trafic.
FR7807984A 1977-04-30 1978-03-20 Indicateur optique Withdrawn FR2389226A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1819277 1977-04-30

Publications (1)

Publication Number Publication Date
FR2389226A1 true FR2389226A1 (fr) 1978-11-24

Family

ID=10108243

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7807984A Withdrawn FR2389226A1 (fr) 1977-04-30 1978-03-20 Indicateur optique

Country Status (1)

Country Link
FR (1) FR2389226A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0035828A2 (fr) * 1980-02-27 1981-09-16 THE GENERAL ELECTRIC COMPANY, p.l.c. Lampe d'éclairage électronique à fluorescence et circuit associé
US4406975A (en) * 1979-09-06 1983-09-27 English Electric Valve Company Lamps

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB543499A (en) * 1939-09-09 1942-02-27 British Thomson Houston Co Ltd Improvements in electron discharge tubes
US2907909A (en) * 1957-07-05 1959-10-06 Du Mont Allen B Lab Inc Light source
US3983532A (en) * 1974-02-11 1976-09-28 Royce Hayes Traffic control signal apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB543499A (en) * 1939-09-09 1942-02-27 British Thomson Houston Co Ltd Improvements in electron discharge tubes
US2907909A (en) * 1957-07-05 1959-10-06 Du Mont Allen B Lab Inc Light source
US3983532A (en) * 1974-02-11 1976-09-28 Royce Hayes Traffic control signal apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4406975A (en) * 1979-09-06 1983-09-27 English Electric Valve Company Lamps
EP0035828A2 (fr) * 1980-02-27 1981-09-16 THE GENERAL ELECTRIC COMPANY, p.l.c. Lampe d'éclairage électronique à fluorescence et circuit associé
EP0035828A3 (fr) * 1980-02-27 1982-01-27 THE GENERAL ELECTRIC COMPANY, p.l.c. Lampe d'éclairage électronique à fluorescence et circuit associé

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Legal Events

Date Code Title Description
ST Notification of lapse