Patent ID: 9305745
Filing Date: 2016-04-05
CPC Classification: H01J

Claim Text:
1. A scanning electron microscope comprising an electron source and a monochromator that makes an electron beam emitted from the electron source monochromatic, wherein: the monochromator includes a magnetic field generator that deflects the electron beam, and an energy selection aperture that passes a part of the electron beam deflected by the magnetic field generator; the monochromator is arranged on a trajectory of electrons emitted from a sample when the sample is irradiated with the electron beam that has passed through the monochromator; and a plurality of detecting elements are arranged on a plurality of trajectories of electrons which are dispersed due to the deflection effect of the monochromator, wherein each of the plurality of detecting elements includes a first aperture that passes some of electrons emitted from the sample.