EP 0062553 B1 19850123 - IMAGE INTENSIFIER TUBE TARGET AND IMAGE INTENSIFIER TUBE WITH VIDEO OUTPUT COMPRISING SUCH A TARGET
Title (en)
IMAGE INTENSIFIER TUBE TARGET AND IMAGE INTENSIFIER TUBE WITH VIDEO OUTPUT COMPRISING SUCH A TARGET
Publication
Application
Priority
FR 8106187 A 19810327
Abstract (en)
[origin: US4647811A] A variable gain R.I.I. target is obtained by using an optical fibre board, whose face on the R.I.I. side has blind holes containing two types of granular luminescent materials having different luminous efficiencies and which are separated by a barrier layer. The electron beam from the R.I.I. photocathode is subject to two different accelerating voltages, the lower accelerating voltage exciting the luminescent material with the lower luminous efficiency and the higher accelerating voltage exciting the luminescent material with the higher luminous efficiency. Application to image intensifier tubes, used more specifically in radiology and fluoroscopy.
IPC 1-7
IPC 8 full level
H01J 29/18 (2006.01); H01J 29/44 (2006.01); H01J 31/49 (2006.01); H01J 31/50 (2006.01)
CPC (source: EP US)
H01J 29/44 (2013.01 - EP US); H01J 31/49 (2013.01 - EP US)
Citation (examination)
THOMSON-CSF CATALOGUE GTE 021 (Aout 1972), p. 15-17
Designated contracting state (EPC)
DE GB NL
DOCDB simple family (publication)
EP 0062553 A1 19821013; EP 0062553 B1 19850123; DE 3262002 D1 19850307; FR 2502842 A1 19821001; FR 2502842 B1 19830429; JP H0341935 B2 19910625; JP S57174842 A 19821027; US 4647811 A 19870303
DOCDB simple family (application)
EP 82400460 A 19820312; DE 3262002 T 19820312; FR 8106187 A 19810327; JP 4881782 A 19820326; US 69305885 A 19850122