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. 25, 1980
Filed:
Mar. 22, 1978
Applicant:
Inventor:
Jean-Pierre Fouilloy, Velizy, FR;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
2502 / ; 250207 ; 2502 / ;
Abstract
A power supply for a microchannel image tube. Microchannel plate voltage is controlled, to adjust tube gain, as an inverse function of screen current in an intermediate illumination range. In addition, the photocathode plate voltage is controlled as a function of screen current in a second illumination range. The said second illumination range including higher illumination values than said first range and the lowest illumination value in said second range is at least equal to the minimum illumination value in said first range.