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1. US5510670 - Electron beam device having a glass envelope and a focussing lens provided thereon

Office United States of America
Application Number 08277446
Application Date 19.07.1994
Publication Number 5510670
Publication Date 23.04.1996
Grant Number 5510670
Grant Date 23.04.1996
Publication Kind A
IPC
H01J 29/46
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
29Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/113
46Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
H01J 29/58
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
29Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/113
46Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
58Arrangements for focusing or reflecting ray or beam
H01J 29/62
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
29Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/113
46Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
58Arrangements for focusing or reflecting ray or beam
62Electrostatic lenses
H04N 9/28
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
9Details of colour television systems
12Picture reproducers
16using cathode ray tubes
28Arrangements for convergence or focusing
CPC
H04N 9/28
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
9Details of colour television systems
12Picture reproducers
16using cathode ray tubes
28Arrangements for convergence or focusing
H01J 29/62
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
29Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
46Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
58Arrangements for focusing or reflecting ray or beam
62Electrostatic lenses
H01J 2229/4827
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
2229Details of cathode ray tubes or electron beam tubes
48Electron guns
4824Constructional arrangements of electrodes
4827Electrodes formed on surface of common cylindrical support
Applicants Philips Electronics North American Corporation
Inventors Osborne William N.
Prinsen Petrus J. M.
Montie Edwin A.
Agents Spain Norman N.
Title
(EN) Electron beam device having a glass envelope and a focussing lens provided thereon
Abstract
(EN)

A focussing lens for an electron beam device is formed by a helically coiled resistance layer of a fired suspension of a conductive material of a mixture of a lead rathenate, a lead titanate and a ruthenium oxide in a glass formed of silicon dioxide, aluminum oxide and lead oxide.