Color television picture tube with color-selection structure...

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

H - Electricity

01

J

313/35.16

H01J 29/07 (2006.01) H01J 29/81 (2006.01)

Patent

CA 1138515

RCA 74,032 Abstract A novel CPT, i.e., color television picture tube, 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.

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