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JPS57191955A - Cathode-ray tube for light-source - Google Patents

Cathode-ray tube for light-source

Info

Publication number
JPS57191955A
JPS57191955A JP7740481A JP7740481A JPS57191955A JP S57191955 A JPS57191955 A JP S57191955A JP 7740481 A JP7740481 A JP 7740481A JP 7740481 A JP7740481 A JP 7740481A JP S57191955 A JPS57191955 A JP S57191955A
Authority
JP
Japan
Prior art keywords
cathode
ray tube
green
constituted
red
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
JP7740481A
Other languages
Japanese (ja)
Inventor
Hiroo Kobayashi
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP7740481A priority Critical patent/JPS57191955A/en
Publication of JPS57191955A publication Critical patent/JPS57191955A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J63/00—Cathode-ray or electron-stream lamps
    • H01J63/06—Lamps with luminescent screen excited by the ray or stream

Landscapes

  • Discharge Lamps And Accessories Thereof (AREA)

Abstract

PURPOSE:To reduce the sight distance of a big display, which is constituted by using cathode-ray tubes as picture elements, by dividing the fluorescent screen of each cathode-ray tube used as a picture element into halves, and making one cathode-ray tube to emit light of two different primary colors. CONSTITUTION:The inner wall of a face part 3 provided at one end of a vacuum encircling case is divided into halves, and fluorescent screens 2a and 2b having different emission colors are provided on the divided inner walls of the part 3. Non-focusing electron beams 10a and 10b are discharged from positions facing to the screens 2a and 2b so that almost whole surfaces of the screens 2a and 2b can be irradiated by the electron beams 10a and 10b. Here, when a green and a red are constituted with a cathode-ray tube 31 and a green and a blue are constituted with a cathode-ray tube 32, the sight distance is reduced to the half since the sharpness of pictures is controlled by the green, and the red and the blue exist to tint the pictures. In addition, since the red and the green, with which the color shift becomes most noticeable, can be arranged close to each other, pictures much more easily seen than conventional ones can be obtained as to display of yellow color or the like.
JP7740481A 1981-05-20 1981-05-20 Cathode-ray tube for light-source Pending JPS57191955A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7740481A JPS57191955A (en) 1981-05-20 1981-05-20 Cathode-ray tube for light-source

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7740481A JPS57191955A (en) 1981-05-20 1981-05-20 Cathode-ray tube for light-source

Publications (1)

Publication Number Publication Date
JPS57191955A true JPS57191955A (en) 1982-11-25

Family

ID=13632966

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7740481A Pending JPS57191955A (en) 1981-05-20 1981-05-20 Cathode-ray tube for light-source

Country Status (1)

Country Link
JP (1) JPS57191955A (en)

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