JPS55136433A - Projection cathode-ray tube - Google Patents

Projection cathode-ray tube

Info

Publication number
JPS55136433A
JPS55136433A JP4342379A JP4342379A JPS55136433A JP S55136433 A JPS55136433 A JP S55136433A JP 4342379 A JP4342379 A JP 4342379A JP 4342379 A JP4342379 A JP 4342379A JP S55136433 A JPS55136433 A JP S55136433A
Authority
JP
Japan
Prior art keywords
meniscus lens
funnel
ray tube
projection cathode
outer case
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
JP4342379A
Other languages
Japanese (ja)
Inventor
Takashi Sugawara
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 JP4342379A priority Critical patent/JPS55136433A/en
Publication of JPS55136433A publication Critical patent/JPS55136433A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/86—Vessels; Containers; Vacuum locks
    • H01J29/89—Optical or photographic arrangements structurally combined or co-operating with the vessel
    • H01J29/894—Arrangements combined with the vessel for the purpose of image projection on a screen

Landscapes

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

PURPOSE:To form a projection cathode-ray tube at low cost without vitiating productivity by forming a fluorescent screen on a meniscus lens as well as constructing a vacuum outer case with a funnel and a meniscus lens. CONSTITUTION:The vacuum outer case 1 consists of the funnel 3 with the neck portion 2 and the meniscus lens 10 whose fitting portion 101 provided on its periphery is connected with the opening portion of the funnel 3 by means of a soldering glass, e.g., frit glass, etc. The convexed surface of the meniscus lens 10 is coated with the fluorescent film 12 directly, and the meniscus lens 10 is formed in such a way that the fitting portion 101 is situated within the extended line of its curvature radius.
JP4342379A 1979-04-09 1979-04-09 Projection cathode-ray tube Pending JPS55136433A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4342379A JPS55136433A (en) 1979-04-09 1979-04-09 Projection cathode-ray tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4342379A JPS55136433A (en) 1979-04-09 1979-04-09 Projection cathode-ray tube

Publications (1)

Publication Number Publication Date
JPS55136433A true JPS55136433A (en) 1980-10-24

Family

ID=12663282

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4342379A Pending JPS55136433A (en) 1979-04-09 1979-04-09 Projection cathode-ray tube

Country Status (1)

Country Link
JP (1) JPS55136433A (en)

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