| 摘要 |
PROBLEM TO BE SOLVED: To reduce halation which is easy to occur in an image receiving tube device at a total deflection angle of 115 deg. or larger. SOLUTION: In the image receiving tube comprising a panel on which a phosphor screen is formed, a funnel unitized with the panel, an electron gun installed in the funnel, a magnetic shield 1 for shielding an electron beam 5 emitted from the electron gun from the outer magnetic field, and a frame 2 for holding the magnetic shield 1, the magnetic shield 1 has a fold 20 folded to the tube axis side at the junction with the frame 2, and thickness T at the edge on the tube axis side of the fold 20 is set to be not more than 0.08 mm.
|
