JPS55143759A - Image display tube - Google Patents

Image display tube

Info

Publication number
JPS55143759A
JPS55143759A JP5208579A JP5208579A JPS55143759A JP S55143759 A JPS55143759 A JP S55143759A JP 5208579 A JP5208579 A JP 5208579A JP 5208579 A JP5208579 A JP 5208579A JP S55143759 A JPS55143759 A JP S55143759A
Authority
JP
Japan
Prior art keywords
light
refraction
face plate
angle
concave
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
JP5208579A
Other languages
Japanese (ja)
Inventor
Masahiko Kaneko
Kaoru Tomii
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP5208579A priority Critical patent/JPS55143759A/en
Publication of JPS55143759A publication Critical patent/JPS55143759A/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
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/18—Luminescent screens
    • H01J29/30—Luminescent screens with luminescent material discontinuously arranged, e.g. in dots, in lines
    • H01J29/32—Luminescent screens with luminescent material discontinuously arranged, e.g. in dots, in lines with adjacent dots or lines of different luminescent material, e.g. for colour television
    • H01J29/327—Black matrix materials
    • 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
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/18—Luminescent screens
    • H01J29/24—Supports for luminescent material

Abstract

PURPOSE:To reduce the reflected light by forming the face plate with two kind of glasses having different refractive index and located in convex and concave while increasing the utilization of light by narrowing the radiating angle of emitted light. CONSTITUTION:The face plate is formed with a glass layer 5 having large index of refraction n1 and a glass layer 6 having small index of refraction n2 and they are located in concave and convex. Then fluorescent members 11-13 and an absorving material 14 are provided on the inner face of said face plate to form a color image receiving tube. The light beam 7 from the light emitting point 0 due to the stimulus of electron beam has the refraction angle theta2 larger than the incident angle theta1 thereby causes no full reflection, while since the radiating angle theta3 of the light beam 9 is also reduced the amount of incident light to the eye of the observer can be increased resulting in the improvement of entire utilization of light.
JP5208579A 1979-04-26 1979-04-26 Image display tube Pending JPS55143759A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5208579A JPS55143759A (en) 1979-04-26 1979-04-26 Image display tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5208579A JPS55143759A (en) 1979-04-26 1979-04-26 Image display tube

Publications (1)

Publication Number Publication Date
JPS55143759A true JPS55143759A (en) 1980-11-10

Family

ID=12904981

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5208579A Pending JPS55143759A (en) 1979-04-26 1979-04-26 Image display tube

Country Status (1)

Country Link
JP (1) JPS55143759A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5727540A (en) * 1980-07-25 1982-02-13 Sony Corp Color cathode-ray tube device
JPH03184243A (en) * 1990-02-17 1991-08-12 Mitsubishi Electric Corp Cathode-ray tube with front glass adhered

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5727540A (en) * 1980-07-25 1982-02-13 Sony Corp Color cathode-ray tube device
JPH03184243A (en) * 1990-02-17 1991-08-12 Mitsubishi Electric Corp Cathode-ray tube with front glass adhered

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