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:
Mar. 02, 1976
Filed:
Jan. 17, 1974
Applicant:
Inventors:
Rene Odru, St.-Martin-d'Heres, FR;
Jacques Vacher, Sassenage, FR;
Assignee:
Commissariat a l'Energie Atomique, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
250207 ; 2502 / ; 250549 ; 3131 / ;
Abstract
A light impact on the photocathode of a photomultiplier is localized by defocusing the beam of emitted photoelectrons, sweeping the surface of the photocathode by means of a localized electric field which is located in the vicinity of the photocathode and by measuring the time which elapses between the instant of commencement of sweeping of the photocathode surface and at least one change of sign of the anode signal.