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. 25, 1983
Filed:
Mar. 27, 1981
Applicant:
Inventor:
Robert W Fitts, Lititz, PA (US);
Assignee:
RCA Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ;
U.S. Cl.
CPC ...
313102 ; 313181 ;
Abstract
An image intensifier tube includes a substantially cylindrical envelope having a photoemissive cathode at one end and a phosphor screen at the other end. A tubulation extends through the envelope wall for introducing a constituent of the cathode into the envelope. A baffle ring comprising an insulative material is located within the tube adjacent to the tubulation. The baffle ring forms an interior annular chamber with the cylindrical envelope. An annular passage is formed between the baffle ring and an inwardly-extending portion of the envelope.