Patent ID: 6392335
Filing Date: 2002-05-21
Classification: H01J

Abstract:
An electron gun fixer comprising,bulb spacers fixed to an electron gun, said electron gun being to be inserted into a bulb neck, and said bulb spacers each having a supporting portion to be put into press contact with the inner surface of said bulb neck, wherein the equation â€œR1&gE;R2>R3â€  holds for said supporting portion, where R1 is the radius of curvature in the cross section along the direction of insertion of said electron gun into said bulb neck, R2 is the radius of curvature of a peripheral part in the cross section perpendicular to the direction of insertion, and R3 is the radius of curvature of the remaining parts in the cross section perpendicular to the direction of insertion; and R2 is substantially equal to the radius of curvature R0 of said bulb neck.