Radiant energy – With charged particle beam deflection or focussing – Magnetic lens
Patent
1997-02-18
1998-11-03
Nguyen, Kiet T.
Radiant energy
With charged particle beam deflection or focussing
Magnetic lens
2504922, H01J 3730
Patent
active
058312706
ABSTRACT:
Magnetic deflectors for charged particle beams are provided. The magnetic deflectors comprise at least one pair of coils to provide high deflection sensitivity over large regions of uniform deflection without increasing the size of the magnetic core used by the deflectors. Charged-particle-beam lithography systems using such deflectors are also disclosed.
REFERENCES:
patent: 3911321 (1975-10-01), Wardly
patent: 4090077 (1978-05-01), Anger
patent: 4251728 (1981-02-01), Pfeiffer et al.
patent: 4362945 (1982-12-01), Riecke
patent: 4929838 (1990-05-01), Yasuda et al.
patent: 5276331 (1994-01-01), Oae et al.
Nguyen Kiet T.
Nikon Corporation
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