Global Patent Index - EP 1670017 A1

EP 1670017 A1 20060614 - Electron beam window, window assembly, and electron gun

Title (en)

Electron beam window, window assembly, and electron gun

Title (de)

Elektronendurchlässiges Fenster, Fenstereinheit und Elektronenstrahlerzeuger

Title (fr)

Fenêtre transparente aux électrons, ensemble de fenêtre et canon à électrons

Publication

EP 1670017 A1 20060614 (EN)

Application

EP 04257542 A 20041203

Priority

EP 04257542 A 20041203

Abstract (en)

An electron beam window (10) is protected from damage by a high energy electron beam (15) by providing an electrically conductive path in the form of one or more conductive layers (26 and/or 27) earthed (18, 21) to a structure (12) of an electron beam gun (11). The electrically conductive layers (26 and/or 27) are adhered to their respective surfaces (24 and/or 25) and may comprise a conductive layer that is sufficiently thin that it will not significantly impede the passage of electrons through the window (10). Each layer (26 and/or 27) is preferably formed of aluminium but could also be formed from magnesium, titanium, platinum, gold, indium tin oxide, or silica doped to make it electrically conductive. Alternatively, the electron beam window (10) can be made conductive by incorporating an electrically conductive dopant in the diamond, or by ion implantation of at least one of the surfaces (24, 25).

IPC 8 full level

H01J 5/18 (2006.01); H01J 5/22 (2006.01); H01J 33/04 (2006.01)

CPC (source: EP)

H01J 5/18 (2013.01); H01J 5/22 (2013.01); H01J 33/04 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

EP 1670017 A1 20060614

DOCDB simple family (application)

EP 04257542 A 20041203