| 摘要 |
PURPOSE:To cancell an landing error through adjustment of rotating position and rotating angle by forming a deflection electrode of an MF type image pick- up tube in such a way as rotating electric field at the specified position between the electron gun and target surface. CONSTITUTION:An electrostatic deflection, electromagnetic focus type image pick-up tube is formed by accommodating electron guns 7-9, target 3, mesh electrode and deflection electrode 5 vacuum deposited on the internal surface of bulb within the glass bulb 1 and also providing a focus coil 6. The deflection electrode 5 is formed by alternately arranging the comb-tooth-shape horizontal and vertical deflection electrodes 5H1, 5H2, 5V1, 5V2 and these electrodes are formed in such a way that these are rotated by the specified angle phi at the specified position Z=l of the electron guns 7-9 and the surface of target 3. Accordingly, a landing error in any direction can be changed in the reverse direction for sufficient correction by adjusting the rotating position l and rotating angle phi. |
