CRT display set and optical device having means for accurately p

Details CRT display set and optical device having means for accurately p CRT display set and optical device having means for accurately p

1992-12-14

1994-11-08

Rogers, Scott A.

Television

Video display

Projection device

348785, 348825, 348832, 313474, 313476, 313478, 313482, H04N 5645, H04N 574, H01J 2924, H01J 2989

Patent

active

053631480

ABSTRACT:
The disclosure relates to display sets wherein the image produced by a cathode-ray tube is displayed on a display screen by means of an optical device. It relates more particularly to means for facilitating the relative positioning between the cathode-ray tube and the optical device. The cathode-ray tube comprises a bulb having one end closed by a transparent plate bearing an cathodoluminescent screen. In one characteristic, the transparent plate is greater than the bulb and comprises a peripheral part that extends beyond the bulb so as to constitute a reference marker of the position of the cathodoluminescent screen. FIG. 1.

REFERENCES:
patent: 2545348 (1951-03-01), Fabel
patent: 2559353 (1951-07-01), Fisch
patent: 2663011 (1953-12-01), DeBoy
patent: 4522309 (1985-06-01), Overall et al.
patent: 4621294 (1986-11-01), Lee
patent: 4716493 (1987-12-01), Zelkowitz

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