The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 15, 2022
Filed:
Jan. 28, 2020
Applicant:
Jeol Ltd., Tokyo, JP;
Inventor:
Yuji Kohno, Tokyo, JP;
Assignee:
JEOL Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 37/147 (2006.01); H01J 37/141 (2006.01);
U.S. Cl.
CPC ...
H01J 37/1472 (2013.01); H01J 37/141 (2013.01); H01J 2237/141 (2013.01);
Abstract
There is provided a deflector that produces only a weak resulting combined hexapole field. The deflector () has first to sixth coils (-). The first to third coils (-) are equal in direction of energization. The fourth to sixth coils (-) are equal in direction of energization. The first coil () and fourth coil () are opposite in direction of energization. The first, third, fourth, and sixth coils () are equal in electromotive force. The second coil () is equal in electromotive force to the fifth coil () and twice the electromotive force of the first coil ().