Measuring head for determining both the color purity and the...

Details Measuring head for determining both the color purity and the... Measuring head for determining both the color purity and the...

H - Electricity

01

J

316/3

H01J 9/44 (2006.01) H01J 9/42 (2006.01) H04N 17/04 (2006.01)

Patent

CA 1208277

Abstract of the Disclosure MEASURING HEAD FOR DETERMINING BOTH THE COLOR PURITY AND THE CONVERGENCE IN A COLOR TV PICTURE TUBE A measuring head serving to determine both the color puri- ty and the convergence in color TV picture tubes with a specially shaped diaphragm aperture, with the distance of the brightness sensors being adapted to the mutual spacing of the phosphor stripes, permits a wide positioning tolerance when placed in front of the screen of the picture tube. Moreover, to make the determination of the convergence more accurate, the output signal of the measuring head is such that it can be made independent of the influence of the intensity and of the time dependence of the brightness signals. (Fig. 3) cont'd.

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