JPS6448355A - Electron gun - Google Patents

Electron gun

Info

Publication number
JPS6448355A
JPS6448355A JP20311387A JP20311387A JPS6448355A JP S6448355 A JPS6448355 A JP S6448355A JP 20311387 A JP20311387 A JP 20311387A JP 20311387 A JP20311387 A JP 20311387A JP S6448355 A JPS6448355 A JP S6448355A
Authority
JP
Japan
Prior art keywords
lens
quadrupole
focusing
resolution
electron beam
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
JP20311387A
Other languages
Japanese (ja)
Inventor
Naoaki Umetsu
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.)
Toshiba Corp
Original Assignee
Toshiba 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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP20311387A priority Critical patent/JPS6448355A/en
Publication of JPS6448355A publication Critical patent/JPS6448355A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To improve the extent of resolution in a faceplate peripheral part without deteriorating the resolution in a faceplate central part at a small current area by installing a device, strongly focusing an electron beam in the horizontal direction, in a first quadrupole lens of a pre-focus lens part, and also installing another device, strongly focusing the electron beam in the vertical direction, in a second quadrupole lens of a main lens mart. CONSTITUTION:This electron gun has a triple pole part, a pre-focus lens part and a main lens part, the prefocus lens part forms a first quadrupole lens 20, the main lens part forms a second quadrupole lens 21, and these first and second quadrupole lenses 20 and 21 are orthogonalized with each other, and in the suchlike electron gun, a device, stringly focusing an electron beam in the horizontal direction, is installed in the first quadrupole lens 20 as well as device, strongly focusing the electron beam in the vertical direction, is installed in the second quadrupole lens 21. With this constitution, utilizing a fact that each focusing action in both these horizontal and vertical directions is different from each other, resolution over the whole faceplate is improvable without deteriorating the resolution in the faceplate central part at a small current area among others.
JP20311387A 1987-08-17 1987-08-17 Electron gun Pending JPS6448355A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20311387A JPS6448355A (en) 1987-08-17 1987-08-17 Electron gun

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20311387A JPS6448355A (en) 1987-08-17 1987-08-17 Electron gun

Publications (1)

Publication Number Publication Date
JPS6448355A true JPS6448355A (en) 1989-02-22

Family

ID=16468615

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20311387A Pending JPS6448355A (en) 1987-08-17 1987-08-17 Electron gun

Country Status (1)

Country Link
JP (1) JPS6448355A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2683942A1 (en) * 1991-11-14 1993-05-21 Sony Corp CATHODE RAY TUBE.
US6759142B2 (en) 2001-07-31 2004-07-06 Kobe Steel Ltd. Plated copper alloy material and process for production thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2683942A1 (en) * 1991-11-14 1993-05-21 Sony Corp CATHODE RAY TUBE.
US6759142B2 (en) 2001-07-31 2004-07-06 Kobe Steel Ltd. Plated copper alloy material and process for production thereof
US6939621B2 (en) 2001-07-31 2005-09-06 Kobe Steel, Ltd. Plated copper alloy material and process for production thereof

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