Patent ID: 11955310
Assignee: FEI COMPANY
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. Method of operating a transmission electron microscope, comprising the steps of:
providing a sample;
operating a transmission electron microscope comprising a projector system in a first mode on said sample, wherein the first mode corresponds to the transmission electron microscope performing a higher resolution EELS analysis on the sample, and wherein the projector system comprises a first projector lens and a second projector lens that is downstream of the first projector lens;
bringing said transmission electron microscope to a second mode by changing a projector system settings of said projector system from first settings to second settings to cause an increase in the distance between a final projector lens and a final crossover of a charged particle beam of the transmission electron microscope, wherein changing the projector system settings comprises changing settings of at least one of the first projector lens and the second projector lens; and
operating said transmission electron microscope in said second mode on said same sample that the transmission electron microscope performs a lower resolution EELS analysis on the sample that has a lower resolution than the higher resolution EELS analysis.