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:
Jan. 08, 1985
Filed:
Aug. 31, 1982
Applicant:
Inventors:
Emmanuel de Chambost, Paris, FR;
Jacques Trotel, Paris, FR;
Assignee:
Thomson-CSF, Paris, FR;
Primary Examiner:
Int. Cl.
CPC ...
H01J / ; A61K / ;
U.S. Cl.
CPC ...
250398 ; 2503 / ;
Abstract
The device according to the invention comprises a source and an electronic optical system permitting the projection of the beam onto a target plane. According to the invention, a diaphragm for the angular limitation of the beam is positioned between the source and the electronic optical system, the useful current of the beam at the target plane being more than one thousandth of the current emitted by the source.