Radiant energy – Inspection of solids or liquids by charged particles – Electron probe type
Reexamination Certificate
2007-07-05
2009-12-15
Berman, Jack I (Department: 2881)
Radiant energy
Inspection of solids or liquids by charged particles
Electron probe type
C250S307000, C250S252100
Reexamination Certificate
active
07633064
ABSTRACT:
An electric charged particle beam microscope measures a geometric distortion at an arbitrary magnification with high precision, and corrects the geometric distortion. A geometric distortion at a first magnification is measured as an absolute distortion based on a standard specimen having a cyclic structure. A microscopic structure specimen is photographed at a geometric distortion measured first magnification and at a geometric distortion unmeasured second magnification. The image at the first magnification is equally transformed to the second magnification to generate a scaled image. The geometric distortion at the second magnification is measured as a relative distortion based on the scaled image. The absolute distortion at the second magnification is obtained on the basis of the absolute distortion at the first magnification and the relative distortion at the second magnification. Subsequently, the second magnification is replaced with the first magnification, and the relative distortion measurement is repeated.
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Inada Hiromi
Koguchi Masanari
Tsuneta Ruriko
Berman Jack I
Hitachi High-Technologies Corporation
Mattingly & Malur, PC
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