JPS5772252A - Cathode structure for x-ray tube - Google Patents

Cathode structure for x-ray tube

Info

Publication number
JPS5772252A
JPS5772252A JP55148308A JP14830880A JPS5772252A JP S5772252 A JPS5772252 A JP S5772252A JP 55148308 A JP55148308 A JP 55148308A JP 14830880 A JP14830880 A JP 14830880A JP S5772252 A JPS5772252 A JP S5772252A
Authority
JP
Japan
Prior art keywords
wire
focusing electrode
supporting
fixed
focusing
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
JP55148308A
Other languages
Japanese (ja)
Other versions
JPS6347111B2 (en
Inventor
Tadashi Hayashi
Hidekatsu Baba
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP55148308A priority Critical patent/JPS5772252A/en
Publication of JPS5772252A publication Critical patent/JPS5772252A/en
Publication of JPS6347111B2 publication Critical patent/JPS6347111B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
    • H01J35/06—Cathodes
    • H01J35/064—Details of the emitter, e.g. material or structure

Abstract

PURPOSE:To simplify the structure of a cathode by shortening the length along the tube axis direction through using a button stem and supporting a focus electrode with a plurality of wires. CONSTITUTION:A focusing electrode 1, on which a focusing groove 9 and penetrating holes 10, 10' at bottom of it are provided, is connected to lead wires 8 which are sealed through a button stem 11, and is fixed and supported with it. One supporting wire which fixes a filament 2 is passed through the penetrating hole 10 spaced with no intermediate insulator and so that the wire does not touch with the focusing electrode 1, and connected to the insulated lead wire 8 which is different from the wire for supporting the focusing electrode 1. The other supporting wire 3' of the filament 2 is passed through the penetrating hole 10' and connected and fixed to the focusing electrode 1 using a fixing metal 5. If required for the improvement of electrical shielding and dielectric strength, a shielding cylinder 12 is mounted and fixed on the side surface of the focusing electrode 1.
JP55148308A 1980-10-24 1980-10-24 Cathode structure for x-ray tube Granted JPS5772252A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55148308A JPS5772252A (en) 1980-10-24 1980-10-24 Cathode structure for x-ray tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55148308A JPS5772252A (en) 1980-10-24 1980-10-24 Cathode structure for x-ray tube

Publications (2)

Publication Number Publication Date
JPS5772252A true JPS5772252A (en) 1982-05-06
JPS6347111B2 JPS6347111B2 (en) 1988-09-20

Family

ID=15449876

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55148308A Granted JPS5772252A (en) 1980-10-24 1980-10-24 Cathode structure for x-ray tube

Country Status (1)

Country Link
JP (1) JPS5772252A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1007372A3 (en) * 1993-07-28 1995-05-30 Philips Electronics Nv X-ray tube with improved heat exchange

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1007372A3 (en) * 1993-07-28 1995-05-30 Philips Electronics Nv X-ray tube with improved heat exchange

Also Published As

Publication number Publication date
JPS6347111B2 (en) 1988-09-20

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