NL7413436A - CRT with constant magnetic focussing field - has electrostatic field to compensate variations in magnetic focussing - Google Patents

CRT with constant magnetic focussing field - has electrostatic field to compensate variations in magnetic focussing

Info

Publication number
NL7413436A
NL7413436A NL7413436A NL7413436A NL7413436A NL 7413436 A NL7413436 A NL 7413436A NL 7413436 A NL7413436 A NL 7413436A NL 7413436 A NL7413436 A NL 7413436A NL 7413436 A NL7413436 A NL 7413436A
Authority
NL
Netherlands
Prior art keywords
field
magnetic focussing
crt
focussing
magnetic
Prior art date
Application number
NL7413436A
Other languages
Dutch (nl)
Other versions
NL164421B (en
NL164421C (en
Original Assignee
Balandin Genrikh D
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 Balandin Genrikh D filed Critical Balandin Genrikh D
Priority to NL7413436A priority Critical patent/NL164421C/en
Publication of NL7413436A publication Critical patent/NL7413436A/en
Publication of NL164421B publication Critical patent/NL164421B/en
Application granted granted Critical
Publication of NL164421C publication Critical patent/NL164421C/en

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
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/80—Arrangements for controlling the ray or beam after passing the main deflection system, e.g. for post-acceleration or post-concentration, for colour switching
    • 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
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/58—Arrangements for focusing or reflecting ray or beam

Landscapes

  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

The cathode-ray tube has a magnetic lens of constant field strength to focus the electron beam, and an electrostatic lens to alter the beam energy such that changes in focussing due to variations in the magnetic lens field are compensated. The electrostatic lens consists of two acially separated electrodes (7, 8). The first electrode (7) is at the same potential as the accelerating electrodes (6) on the other side of the X-Y deflection plates, and the second electrode (8) is located inside the magnetic coil on the oppsoite side of the latter centre plane (14) away from the screen.
NL7413436A 1974-10-11 1974-10-11 CATHODE BEAM WITH VARIABLE ENERGY FROM THE ELECTRONS IN THE BUNDLE. NL164421C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL7413436A NL164421C (en) 1974-10-11 1974-10-11 CATHODE BEAM WITH VARIABLE ENERGY FROM THE ELECTRONS IN THE BUNDLE.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7413436A NL164421C (en) 1974-10-11 1974-10-11 CATHODE BEAM WITH VARIABLE ENERGY FROM THE ELECTRONS IN THE BUNDLE.

Publications (3)

Publication Number Publication Date
NL7413436A true NL7413436A (en) 1976-04-13
NL164421B NL164421B (en) 1980-07-15
NL164421C NL164421C (en) 1980-12-15

Family

ID=19822262

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7413436A NL164421C (en) 1974-10-11 1974-10-11 CATHODE BEAM WITH VARIABLE ENERGY FROM THE ELECTRONS IN THE BUNDLE.

Country Status (1)

Country Link
NL (1) NL164421C (en)

Also Published As

Publication number Publication date
NL164421B (en) 1980-07-15
NL164421C (en) 1980-12-15

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Legal Events

Date Code Title Description
V1 Lapsed because of non-payment of the annual fee