Printed sheet for deflection coils

Details Printed sheet for deflection coils Printed sheet for deflection coils

1997-03-06

1999-11-30

Anderson, Bruce C.

Radiant energy

With charged particle beam deflection or focussing

Magnetic lens

3133611, H01J 3714

Patent

active

059947039

ABSTRACT:
A printed circuit for forming deflection coils used, for example, in a scanning electron microscope. The printed circuit permits some of scroll coil circuits to be connected with an external circuit with or without connecting them in series. There is also disclosed a printed circuit capable of forming deflection coils which are small in size but produce strong magnetic fields. A printed circuit according to the invention comprises a sheet on which the scroll coils and indicia are printed. When the sheet is wound into a cylinder, the scroll coils are arranged circumferentially.

REFERENCES:
patent: 3702450 (1972-11-01), Avery et al.
patent: 3781732 (1973-12-01), Wollnik
patent: 4519691 (1985-05-01), Yamada et al.
patent: 5068612 (1991-11-01), Auslander et al.
patent: 5264706 (1993-11-01), Oae et al.
patent: 5349744 (1994-09-01), Takahashi
patent: 5623208 (1997-04-01), Hasegawa
patent: 5773976 (1998-06-01), Sakakura et al.

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