Electron tube with particle trap integral with envelope wall

Details Electron tube with particle trap integral with envelope wall Electron tube with particle trap integral with envelope wall

1979-09-12

1981-11-03

Demeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Envelope

313242, 313479, H01J 2984, H01J 2988

Patent

active

042988217

ABSTRACT:
The invention provides a television camera tube having between the gun thereof and its target a baffle member formed as a wall integral with the tube and extending inwardly and towards the gun to provide a particle receiving cavity extending around the path of the beam of the gun for retaining loose particles originating from the gun and which would otherwise land upon the target of the tube when this is operated in a "face-down" position.

REFERENCES:
patent: 2841728 (1958-07-01), McGee
patent: 3183388 (1965-05-01), Townsend et al.
patent: 3560779 (1971-02-01), May
"Combination Bulb Spacer and Glass Particle Trap", by W. R. Poff, RCA Technical Notes, PN-1136, 2 pp., Dec. 19, 1975.

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