CRT Incorporating x-ray absorbing means

Details CRT Incorporating x-ray absorbing means CRT Incorporating x-ray absorbing means

1982-05-07

1984-11-27

Demeo, Palmer

Electric lamp and discharge devices

Cathode ray tube

Envelope

313479, 358247, H01J 2986, H04N 565

Patent

active

044853297

ABSTRACT:
A cathode ray tube has discrete x-ray absorbing means integrally associated with the face region thereof to beneficially attenuate the x-radiation emanating peripherally and forwardly therefrom. Attached to the tube face is a closed frame-like resilient gasket impregnated with x-ray absorbing material. Superposed thereon is a cover plate of x-ray absorbing glass. This is adhered to the tube face by a layer of substantially transparent adhesive confined within the gasket.

REFERENCES:
patent: 2734142 (1956-02-01), Barnes
patent: 3164672 (1965-01-01), Spear et al.
patent: 3185020 (1965-05-01), Thelen
patent: 3422298 (1969-01-01), De Gier
patent: 3543073 (1970-11-01), Sheldon
patent: 4204231 (1980-05-01), Permenter

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