JPS57194665A - Fluorescent display tube for image sensor - Google Patents

Fluorescent display tube for image sensor

Info

Publication number
JPS57194665A
JPS57194665A JP56079508A JP7950881A JPS57194665A JP S57194665 A JPS57194665 A JP S57194665A JP 56079508 A JP56079508 A JP 56079508A JP 7950881 A JP7950881 A JP 7950881A JP S57194665 A JPS57194665 A JP S57194665A
Authority
JP
Japan
Prior art keywords
light
display tube
condensing
fluorescent
fluorescent display
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.)
Pending
Application number
JP56079508A
Other languages
Japanese (ja)
Inventor
Norio Sato
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP56079508A priority Critical patent/JPS57194665A/en
Publication of JPS57194665A publication Critical patent/JPS57194665A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
    • H04N1/02815—Means for illuminating the original, not specific to a particular type of pick-up head

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)
  • Facsimile Scanning Arrangements (AREA)

Abstract

PURPOSE:To obtain a plug-in type fluorescent display tube having a long lifetime and high uniformity of the luminous intensity, by incorporating a function of a condenser light source and a condensing transmission element for the reflected light into the fluorescent display tube. CONSTITUTION:A fluorescent display tube 2 has a concave fluorescent light emitting surface 5 formed within a glass container 6 so as to ensure the condensing on the surface of an original 1. The display tube is sealed up after the exhaustion of gas. The fluorescent substance has the light emission by the bombardment of electron after applying the voltage between a heat electron supply filament 9 and an anode 10 of a transparent electrode which is partially coated with the fluorescent substance. The light given from the light emitting surface is condensed on the original 1 through a light transmitting part 12. A condensing transmission element such as a selfoc lens array is set between the light transmitting windows 12 to th reflected light. The condensing transmission element that connects optically a condensing light source and the window 12 is designed so as to form focus at a prescribed position outside the tube 2 and including the optical conditions of the window 12.
JP56079508A 1981-05-26 1981-05-26 Fluorescent display tube for image sensor Pending JPS57194665A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56079508A JPS57194665A (en) 1981-05-26 1981-05-26 Fluorescent display tube for image sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56079508A JPS57194665A (en) 1981-05-26 1981-05-26 Fluorescent display tube for image sensor

Publications (1)

Publication Number Publication Date
JPS57194665A true JPS57194665A (en) 1982-11-30

Family

ID=13691883

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56079508A Pending JPS57194665A (en) 1981-05-26 1981-05-26 Fluorescent display tube for image sensor

Country Status (1)

Country Link
JP (1) JPS57194665A (en)

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