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. 12, 1989
Filed:
Dec. 15, 1987
Seog-Lae Cho, Suwon, KR;
Samsung Electron Devices Co., Ltd., Kyonggi, KR;
Abstract
An electron gun for CRTs comprising multi-lens system is disclosed, wherein the rear part of the third electrode (16) forming the lens radius D3 is deeply recessed axialwise by interval H1 to provide the longer lens radius D3' equaling the lens radius D4 the fourth electrode (18) and the sixth electrode (22) is positioned inside the fifth electrode (20), thereby providing the main lens system forming the regions in the form of divergence-convergence-divergence-convergence-divergence-convergence- divergence, said sixth electrode (22) forming the subordinate lens against the main lens formed between the fifth electrode (20) and the seventh electrode (24), said interval H1 being limited within 0.5 to 0.54 of the lens radius D4of the fourth electrode.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile