Patent ID: 7929396

Claim:
An electron beam applying apparatus for applying an electron beam to a surface of a material for recording information on the surface of the material, comprising: a thermal field emission type electron source emitting an electron beam; an electrostatic lens, disposed on a downstream side of the electron source, acting as a condensing electrode for condensing the electron beam in a first angular aperture emitted by the electron source, in a second angular aperture smaller than the first angular aperture; a condenser lens disposed on a downstream side of the electrostatic lens, condensing the electron beam once condensed in the second angular aperture by the electrostatic lens, in a crossover point; an objective lens disposed on a downstream side of the condenser lens, condensing the electron beam once condensed in the crossover point by the condenser lens, on the surface of the material; and an axis aligning coil disposed between the electrostatic lens and the condenser lens for correcting an axis shift of the electron beam applied to the condenser lens from the electrostatic lens.