Patent ID: 7348566
Filing Date: 2008-03-25
Classification: H01J

Abstract:
1. An aberration-correcting microscopy instrument comprising: a first magnetic deflector disposed for reception of a first non-dispersed electron diffraction pattern and configured for projection of a first energy dispersed electron diffraction pattern in an exit plane of the first magnetic deflector; an electrostatic lens disposed in the exit plane of the first magnetic deflector; a second magnetic deflector substantially identical to the first magnetic deflector, wherein the second magnetic deflector is disposed for reception of the first energy dispersed electron diffraction pattern from the electrostatic lens, and configured for projection of a second non-dispersed electron diffraction pattern in a first exit plane of the second magnetic deflector; and an electron mirror configured for correction of one or more aberrations in the second non-dispersed electron diffraction pattern and disposed for reflection of the second non-dispersed electron diffraction pattern to the second magnetic deflector for projection of a second energy dispersed electron diffraction pattern in a second exit plane of the second magnetic deflector.