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公开(公告)号：US20040263050A1
公开(公告)日：2004-12-30
申请号：US10815718
申请日：2004-04-02
Applicant: THALES
Inventor： Andre Gabioud , Michel Langlois
IPC: H01J001/00 , H01J029/46
CPC classification number: H01J25/04 , H01J1/46 , H01J3/027 , H01J23/07 , H01J37/065
Abstract: In a control grid for an electron tube, the grid has first bars that are evenly spaced out on a skewed surface and extend substantially as circle pseudo-involutes about a central hub.
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