| 摘要 |
PROBLEM TO BE SOLVED: To improve the image displaying luminance and to provide a highly accurate image by lining up plural electron beams radiated from an electron gun part on a screen vertical to the horizontal axis of screen with a constant interval. SOLUTION: In order to vertically arrange and display plural electron beams in parallel, when three electron beams 6 being horizontally lined up are simultaneously radiated from an electron gun 7, the orbits of the electron beams on both sides must be bent by a beam control part 8 for lining up three electron beams 6 being horizontally lined up on a screen vertical to the horizontal axis of screen with a constant interval. By the combination with four pole magnetic field acts as a four pole lens and bending the orbits of electron beams on both sides, a beam arrangement in the horizontal direction is defected to the beam arrangement in the vertical direction. Three electron beams 6 are deflected by a deflection yoke and scanned. Deflected electron beams 6 hit on a fluorescent surface part 3 and emit a white light beams. |
