| 摘要 |
1502088 Colour television tubes INTERNATIONAL STANDARD ELECTRIC CORP 12 Feb 1976 [14 Feb 1975] 05553/76 Heading H1D A deflection unit for mounting on the neck of an in-line three-gun colour television tube includes, axially to the front or to the rear of the deflection coils, ferromagnetic elements 21, 22, 31, 32, 33 and 34, arranged in a plane perpendicular to the axis, for modifying the magnetic fields to provide barrel and pin-cushion field shapes consistent with the required convergence. The elements are of the form shown, and may be movably mounted to permit adjustment. Each set of three elements 22, 33, 34 may be combined as a single structure. The deflection coils may be either toroidal or of saddle construction. |
