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:
Jun. 27, 1978
Filed:
Oct. 13, 1976
Applicant:
Inventor:
Harold G Parks, Scotia, NY (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
G01K / ;
U.S. Cl.
CPC ...
250398 ; 2503 / ; 313431 ;
Abstract
A high resolution matrix lens electron optical system utilizes a relatively short focal length matrix lens, means for providing an axial magnetic field and electrostatic deflection means for both coarse and fine deflection operation in conjunction with the axial magnetic field to provide reduced cathode loading and minimal spherical aberration.