Mesh lens focus mask for a cathode-ray tube

Details Mesh lens focus mask for a cathode-ray tube Mesh lens focus mask for a cathode-ray tube

1983-03-31

1985-04-30

Demeo, Palmer

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

313403, 313408, H01J 2907

Patent

active

045146586

ABSTRACT:
The novel CRT is similar in structure to prior art CRT's except for the color-selection structure, which, as in the prior CRT's is for producing a plurality of lenses for passing and focusing portions of electron beams to associated color groups of the target. In the novel CRT, the color-selection structure comprises at least one lenticular member having therein an array of windows associated with only one color group, each window having a half-width, r, and a conductive mesh having interstitial dimensions small compared to the phosphor elements in the color groups. The lenticular member is longitudinally spaced a distance, s, from the conductive mesh so that the ratio of the longitudinal spacing, s, to the half-width, r, of the window is much less than unity (s/r<<1), so that the lenticular member and the conductive mesh provide a strong lens action.

REFERENCES:
patent: Re26035 (1966-06-01), Lawrence
patent: 2728024 (1955-12-01), Ramberg
patent: 2793317 (1957-05-01), Lawrence
patent: 2951179 (1960-08-01), Evans
patent: 3030536 (1962-04-01), Hackett et al.
patent: 3102212 (1963-08-01), Schlesinger
patent: 3421048 (1969-01-01), Christensen
patent: 3502942 (1970-03-01), Khan et al.
patent: 3586900 (1971-06-01), Seki et al.
patent: 3688359 (1972-09-01), Oikawa et al.
patent: 4059781 (1977-11-01), van Alphen et al.
patent: 4121131 (1978-10-01), van Esdonk et al.
patent: 4207490 (1980-06-01), Van der Ven
patent: 4316126 (1982-02-01), Hockings et al.
P. Grivet, Electron Optics, pp. 224-227, (2nd English Edition).

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