Cathode ray tube has section whose thickness is defined in terms of diagonal length between corners of effective screen and thickness at certain positions along axis from sealing surface

The cathode ray tube has a front plate with an outer surface whose external shape is essentially rectangular and a collar region extending to the outer surface essentially perpendicularly wrt. all surfaces of an outer peripheral region of the outer surface, a funnel and a sealing region for connecting the front plate and funnel. The CTR has a section whose thickness is defined in terms of a diagonal length between corners of an effective screen and the thickness at positions extending 75 per cent along the axis from the sealing surface. Eine Kathodenstrahlröhre enthält einen Bereich, dessen Dicke gleich DOLLAR A (2,78 + 0,0038 XD) t1 (3,7 + 0,0038 XD) [mm] DOLLAR A wird, worin D eine Diagonalachsenlänge [mm] zwischen rechteckigen Eckbereichen eines wirksamen Schirms einer Frontplatte und t1 die Dicke [mm] an Positionen, welche 75% der Länge eines Körperbereichs, der sich von einer Dichtfläche des Körperbereichs zu einem Jochbereich entlang der Richtung der Röhrenachse erstreckt, einnehmen, bedeuten.