Method of making organic-retina (pyroelectric) vidicon

Details Method of making organic-retina (pyroelectric) vidicon Method of making organic-retina (pyroelectric) vidicon

1981-12-30

1984-03-20

Ramsey, Kenneth J.

Electric lamp or space discharge component or device manufacturi

Process

Including use of electric arc or current for removing an...

427 74, 445 35, H01J 3149

Patent

active

044378440

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.

REFERENCES:
patent: 3658401 (1972-04-01), Files
patent: 3999698 (1976-12-01), Conklin
patent: 4030789 (1977-06-01), Schampers
patent: 4104771 (1978-08-01), Clark
patent: 4395243 (1983-07-01), Toyama et al.

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