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:
Apr. 18, 1989
Filed:
Oct. 16, 1987
Applicant:
Inventors:
Jean-Luc Ricaud, St. Martin-Le-Vinoux, FR;
Bernard Plos, St. Egreve, FR;
Assignee:
Thomson-CSF, Paris, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ; G02B / ;
U.S. Cl.
CPC ...
313371 ; 313384 ; 315 10 ; 350 961 ;
Abstract
A picture taking tube is provided having a bias light device, said device being formed by a diffuser and a ring of light emitting diodes, which are placed about the glass vacuum enclosure of the tube, the light penetrating into the enclosure through gaps between the electrodes of the tube and also, if necessary, through small sized openings formed in these electrodes.