Charged particle beam apparatus and charged particle beam...

Radiant energy – Inspection of solids or liquids by charged particles – Electron probe type

Reexamination Certificate

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C250S309000, C250S3960ML, C250S3960ML

Reexamination Certificate

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06956211

ABSTRACT:
A charged particle beam apparatus produces little reduction in resolution when the beam is inclined with respect to a sample. The trajectory of a primary beam4is deflected by a deflector or changed by a movable aperture such that the beam is incident on a plurality of lenses6and7off the axes thereof. A means is provided to control the off-axis trajectory of the beam such that an aberration produced by the objective lens7when the beam is inclined can be canceled by an aberration produced by the other lens6.

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patent: 1 235 251 (2002-08-01), None
patent: 55-48610 (1953-09-01), None
patent: 02-033843 (1990-02-01), None
patent: 2000-348658 (2000-12-01), None
patent: 2001-015055 (2001-01-01), None
patent: WO 01/33603 (2001-05-01), None

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