GB2007907A - Cathode ray tube with a concave surface - Google Patents

Cathode ray tube with a concave surface

Info

Publication number
GB2007907A
GB2007907A GB7840993A GB7840993A GB2007907A GB 2007907 A GB2007907 A GB 2007907A GB 7840993 A GB7840993 A GB 7840993A GB 7840993 A GB7840993 A GB 7840993A GB 2007907 A GB2007907 A GB 2007907A
Authority
GB
United Kingdom
Prior art keywords
ray tube
cathode ray
concave surface
image
faceplate
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.)
Granted
Application number
GB7840993A
Other versions
GB2007907B (en
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
Priority claimed from JP12611577A external-priority patent/JPS6047696B2/en
Priority claimed from JP11640678A external-priority patent/JPS5543756A/en
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of GB2007907A publication Critical patent/GB2007907A/en
Application granted granted Critical
Publication of GB2007907B publication Critical patent/GB2007907B/en
Expired 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
    • H01J29/861—Vessels or containers characterised by the form or the structure thereof
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/86—Vessels and containers
    • H01J2229/8613—Faceplates
    • H01J2229/8616—Faceplates characterised by shape
    • H01J2229/862—Parameterised shape, e.g. expression, relationship or equation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/89—Optical components associated with the vessel
    • H01J2229/8913—Anti-reflection, anti-glare, viewing angle and contrast improving treatments or devices

Landscapes

  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

A cathode ray tube has a faceplate (12) which has a concave outer surface (13) of which the radius of curvature is so selected that it renders the reflected images of brightly lit objects inconspicuous, so that the viewer's attention can be concentrated to the screen image. <IMAGE>
GB7840993A 1977-10-19 1978-10-18 Cathode ray tube with a concave surface Expired GB2007907B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP12611577A JPS6047696B2 (en) 1977-10-19 1977-10-19 picture tube
JP11640678A JPS5543756A (en) 1978-09-20 1978-09-20 Picture tube

Publications (2)

Publication Number Publication Date
GB2007907A true GB2007907A (en) 1979-05-23
GB2007907B GB2007907B (en) 1982-02-24

Family

ID=26454740

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7840993A Expired GB2007907B (en) 1977-10-19 1978-10-18 Cathode ray tube with a concave surface

Country Status (3)

Country Link
CA (1) CA1117176A (en)
DE (1) DE2845389A1 (en)
GB (1) GB2007907B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2523368A1 (en) * 1982-03-10 1983-09-16 Sony Corp COOLING LIQUID CATHODE TUBE
GB2132409A (en) * 1982-12-01 1984-07-04 Asahi Glass Co Ltd Cathode ray tube with a protruded face plate
FR2567658A1 (en) * 1984-07-12 1986-01-17 Weiss Jean Device for displaying information
EP1367628A2 (en) * 2002-05-15 2003-12-03 LG Philips Displays Korea Co., Ltd. Funnel structure for cathode ray tube
EP3231462B1 (en) * 2016-04-12 2022-05-18 B. Braun Avitum AG Medical device with monitoring device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS584247A (en) * 1981-06-08 1983-01-11 Mitsubishi Electric Corp Projection-type cathode-ray tube
DE19840590A1 (en) * 1998-09-05 2000-03-09 Brigitte Kobilarov Concave display screen front panel for PCs and TVs forms section of a sphere with center point front of the screen at normal distance for using display for normal size of front panel
DE10240199A1 (en) * 2002-08-28 2004-03-11 Baumann, Hans, Dr. Display screen surface is provided by transparent material with concave shape that provides reflection free effect

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2523368A1 (en) * 1982-03-10 1983-09-16 Sony Corp COOLING LIQUID CATHODE TUBE
GB2132409A (en) * 1982-12-01 1984-07-04 Asahi Glass Co Ltd Cathode ray tube with a protruded face plate
FR2567658A1 (en) * 1984-07-12 1986-01-17 Weiss Jean Device for displaying information
EP1367628A2 (en) * 2002-05-15 2003-12-03 LG Philips Displays Korea Co., Ltd. Funnel structure for cathode ray tube
EP1367628A3 (en) * 2002-05-15 2006-06-21 LG Philips Displays Korea Co., Ltd. Funnel structure for cathode ray tube
EP3231462B1 (en) * 2016-04-12 2022-05-18 B. Braun Avitum AG Medical device with monitoring device

Also Published As

Publication number Publication date
CA1117176A (en) 1982-01-26
DE2845389A1 (en) 1979-04-26
GB2007907B (en) 1982-02-24

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19921018