EP 0155890 B1 19881117 - SLIT-SCANNING IMAGE CONVERTER TUBE
Title (en)
SLIT-SCANNING IMAGE CONVERTER TUBE
Publication
Application
Priority
FR 8404095 A 19840316
Abstract (en)
[origin: EP0155890A2] 1. Image converter tube with slit scanning for observing rapidly evolving light phenomena by scanning the image of a slit (34) on a screen (4), said slit collecting on a photodiode (2) the light supplied by a light phenomenon to be studied, and emitting an electron beam (12, 30, 58), said tube having the aforementioned photocathode (2), a closing means (90, 92), an accelerating electrode (14) and a deflection and focusing optics for the electron beam located between the accelerating electrode and the screen, said deflection and focusing optics comprising a first electronic means for producing the image of the largest dimension of the slit on the screen and a second electronic means, independent of the first, for focusing and deflecting the beam, in the plane of the screen, in a direction perpendicular to the preceding direction, wherein said second electronic means having, between the accelerating electrode (14) and the screen (4), a focusing optics followed by a deflection electrode (42), said focusing optics incorporations quadrupole lens (38) and a convergent planar lens (40), characterized in that the focusing optics also comprises a second convergent planar lens (36) upstream of the quadrupole lens (38) and in that the deflection electrode (42) is located downstream of the convergent planar lens (40), so that the focusing optics forms the image of the smallest dimension of the slit on the screen and limits the width of the beam on entering the deflection electrode (42).
IPC 1-7
IPC 8 full level
H01J 31/50 (2006.01)
CPC (source: EP)
H01J 31/502 (2013.01)
Designated contracting state (EPC)
DE GB NL
DOCDB simple family (publication)
EP 0155890 A2 19850925; EP 0155890 A3 19851023; EP 0155890 B1 19881117; DE 3566327 D1 19881222; FR 2561441 A1 19850920; FR 2561441 B1 19861114; JP H0824037 B2 19960306; JP S60211749 A 19851024
DOCDB simple family (application)
EP 85400461 A 19850311; DE 3566327 T 19850311; FR 8404095 A 19840316; JP 4946885 A 19850314