Projection television tube system

Details Projection television tube system Projection television tube system

1974-09-03

1976-07-13

Segal, Robert

Electric lamp and discharge devices

Cathode ray tube

Envelope

178 788, H01J 3100, H01J 2989

Patent

active

039696480

ABSTRACT:
A color projection television receiver and projector having three color tubes mounted in fixed relation and in predetermined location relative to a screen for projecting three color pictures in registration thereon. Accurate registration of the pictures results from a projection tube structure adapted for accurate reproducability in production, whereby field adjustment is minimized. The tube structure employs a mounting barrel accurately suspended within the evacuated envelope and supporting a phosphorcoated target and a projection mirror. A Schmidt correction lens is mounted externally to the envelope of each tube.

REFERENCES:
patent: 2453003 (1948-11-01), Edwards
patent: 2663012 (1953-12-01), Beers
patent: 2960615 (1960-11-01), Harries
patent: 3549932 (1970-12-01), Lindeman
patent: 3803436 (1974-04-01), Morrell
patent: 3821583 (1974-06-01), Steiner

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