Abstract

In this research, a free rotation and distortion projector doublet electromagnetic lens was designed by computer-aided using electron optical design (EOD) program. This lens consists of two identical lenses. This lens's focal and projector characteristics were calculated in the two max magnification regions by changing the axial magnetic flux density in one of the two single lenses by changing its axial bore diameter. The results showed the possibility of obtaining a free rotation and distortion projector doublet electromagnetic lens in the first max magnification regions, and it has the min magnitude for the projector focal length.

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