Patent ID: 7186975
Filing Date: 2007-03-06
Classification: H01J

Abstract:
1. A scanning charged-particle microscope having a charged-particle source, a lens for focusing a charged-particle beam emitted from said charged-particle source, and a scanning deflector for scanning said charged-particle beam in two-dimensional form on a sample, wherein said scanning charged-particle microscope includes a passage aperture for limiting the passage of the charged-particle beam is located between the charged-particle source and said scanning deflector, and a member for limiting the passage of the charged-particle beam is provided at least in the center of said passage aperture, said lens focusing the charged particle beam such that a plurality of differential parts of the charged particle beam passing through the passage aperture converges one point on the sample simultaneously, said scanning deflector scanning the converged charged particle beam, and an image of said sample is obtained by scanning said charged-particle beam having passed through said passage aperture on said sample using said scanning deflector.