公开(公告)号：US3866076A

公开(公告)日：1975-02-11

申请号：US41858373

申请日：1973-11-23

Applicant: PHILIPS CORP

Inventor： EVERS HENDRIKUS WILLEMINA

IPC: H01J1/38 ,  H01J19/28 ,  H01J19/74 ,  H01J1/46 ,  H01J21/10

CPC classification number: H01J19/74 ,  H01J19/28 ,  H01J2893/0013

Abstract: An electronic tube comprises a anode assembled of two inner anode members and an outer anode member. Surface portions of the inner member which are placed against corresponding surface portions of the outer member have a coefficient of thermal radiation of more than 60% of that of the outer member for a temperature of about 500*C.