Projection cathode ray tube having target angularly and longitud

Details Projection cathode ray tube having target angularly and longitud Projection cathode ray tube having target angularly and longitud

1978-03-27

1979-12-04

Segal, Robert

Electric lamp and discharge devices

Cathode ray tube

Envelope

313478, 358239, H01J 3100, H01J 2924

Patent

active

041774000

ABSTRACT:
A projection cathode ray tube has a target that is mechanically adjustable by means external to the evacuated envelope. The target extends into the evacuated space and is mounted upon a bellows that forms part of the envelope. The target is moved relative to other optical elements within the envelope by means extending through the bellows to provide both axial and pivotal adjustment after the tube is sealed. This structure enables other optical components including image reflectors to be constructed integrally with the envelope, and also improves heat transfer between the target and the external space, permitting control of the target temperature.

REFERENCES:
patent: 2435316 (1948-02-01), Larson
patent: 2453003 (1948-11-01), Edwards
patent: 2663012 (1953-12-01), Beers
patent: 3157055 (1964-11-01), Medicus et al.
patent: 3794874 (1974-02-01), Mulder et al.
patent: 3969648 (1976-07-01), Hergenrother et al.

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