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:
Sep. 23, 2003
Filed:
Apr. 03, 2001
Nobuyuki Suzuki, Ohhara, JP;
Toshio Nakayama, Shirako, JP;
Yasuo Tanaka, Ichihara, JP;
Akiyoshi Tobe, Mobara, JP;
Other;
Abstract
There is provided a cathode ray tube capable of displaying high quality images by suppressing eddy current from occurring and by realizing the velocity modulation. A cylindrical focusing electrode is divided into first cylindrical focusing electrode B and second cylindrical focusing electrode T and the gap between the both electrodes formed and divided by optimizing the length of the second cylindrical focusing electrode T in the tube axial direction is enlarged substantially to increase the infiltration of the velocity modulating magnetic field to the non-electric space of the focusing electrode . An electrode having the equal potential with the focusing electrode is disposed at the gap to suppress eddy current from being generated.