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Scanning charged-particle microscope

  • US 7,186,975 B2
  • Filed: 08/30/2001
  • Issued: 03/06/2007
  • Est. Priority Date: 10/12/2000
  • Status: Expired due to Term
First Claim
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1. A scanning charged-particle microscope havinga charged-particle source,a lens for focusing a charged-particle beam emitted from said charged-particle source, anda 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, andan 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.

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