Color television picture tube with color-selection structure and

Details Color television picture tube with color-selection structure and Color television picture tube with color-selection structure and

1979-11-23

1982-02-16

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

313403, H01J 2980

Patent

active

043161260

ABSTRACT:
CPT comprises a deflection-and-focus color-selection masking structure, a screen of parallel phosphor stripes, and means for producing three convergent in-line electron beams directed towards the target. When the CPT is operated, pairs of beamlets transmitted through windows in adjacent apertures in the masking structure are deflected towards one another to excite the same phosphor stripe and, also, are focused (compressed) in the narrow width direction of the phosphor stripes and defocused (stretched) in the length direction of the phosphor stripes.

REFERENCES:
patent: Re25091 (1961-11-01), Ramberg
patent: 4059781 (1977-11-01), Van Alphen et al.
patent: 4112563 (1978-09-01), Van Esdonk

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