205047 ⎘
Details of cathode-ray tubes or of electron-beam tubes of the types covered by group; Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement; Arrangements for focusing or reflecting ray or beam Magnetic lenses
Sub-classes:Electron transparent membrane for cold cathode devices
#2Apparatus having a magnetic lens configured to diverge an electron beam
#3Method of axial alignment of charged particle beam and charged particle beam system
#4Method and system of performing three-dimensional imaging using an electron microscope
#5Non-axisymmetric charged-particle beam system
#6Non-axisymmetric charged-particle beam system