EP 0533538 B1 19940713 - Image intensifier tube with brightness correction.
Title (en)
Image intensifier tube with brightness correction.
Title (de)
Bildverstärkerröhre mit Helligkeitskorrektur.
Title (fr)
Tube intensificateur d'image à correction de brillance.
Publication
Application
Priority
FR 9111608 A 19910920
Abstract (en)
[origin: EP0533538A1] The invention relates to image intensifier tubes, the brightness curve of which it makes it possible to correct very simply. <??>The image intensifier tube of the invention comprises an entrance window (3), and an exit window (4) in the vicinity of which the brightness is measured. According to the invention, the exit window (4) carries a light-attenuating device (20), the opacity of which is greater in a central zone (O) than towards the edges (21). <IMAGE>
IPC 1-7
IPC 8 full level
H01J 43/28 (2006.01); H01J 29/89 (2006.01); H01J 31/50 (2006.01)
CPC (source: EP US)
H01J 29/89 (2013.01 - EP US); H01J 31/501 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR NL
DOCDB simple family (publication)
EP 0533538 A1 19930324; EP 0533538 B1 19940713; DE 69200238 D1 19940818; DE 69200238 T2 19941117; FR 2681727 A1 19930326; FR 2681727 B1 19931105; JP H05205693 A 19930813; US 5248874 A 19930928
DOCDB simple family (application)
EP 92402488 A 19920911; DE 69200238 T 19920911; FR 9111608 A 19910920; JP 24963692 A 19920918; US 94116292 A 19920904