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. 20, 1984
Filed:
Dec. 30, 1981
Ferdinand C Petito, Alexandria, VA (US);
Gerald Klauber, Fredericksburg, VA (US);
The United States of America as represented by the Secretary of the Army, Washington, DC (US);
Abstract
A temporary faceplate is bonded to an assembled (except for retina) vidicon ube. The tube is baked under vacuum pumping at high temperature to cause evaporation or outgassing of contaminants. After cooling, the tube is placed in an inert atmosphere and the temporary faceplate is exchanged for a pyroelectric faceplate. Vacuum is again pumped and the end of the tube containing the electron gun electrodes and the other electrodes is baked for degassing the electrodes. Still under vacuum pumping, the getters and the cathode of the electron gun are heated to activate them, the retina is activated with anode current by applying voltages to the electron gun and the acceleration electrodes by applying focus and sweep fields to the tube, the getters are fired, and the anode current is used to electron beam scrub the retina and other electrodes. Finally, the tube is tipped-off.