Patent ID: 7250601

Claim:
An element distribution image observing apparatus comprising: an electron beam source for generating an electron beam; a lens for converging an electron beam after transmitting through a specimen; at least two electron beam detectors for detecting an electron beam which has been transmitted through said specimen at an energy dispersion surface, said electron beam detectors further comprising: a maximum intensity peak position detector for detecting a peak position where an electron beam intensity is at maximum in an electron energy loss spectrum formed by the electron beam which has been transmitted through the specimen, and an electron beam detector for detecting a beam which has lost energy; a controller for detecting a deviation value between a peak position of electron intensity detected by said maximum intensity peak position detector, and a reference pixel position on said maximum intensity peak position detector, and for correcting the deviation value; an operation unit for calculating signals from said electron beam detector for detecting a beam which has lost energy; and an image apparatus for showing the element distribution derived from a calculation result from said operation unit.