| 摘要 |
PURPOSE:To reduce the size of a camera head and to suppress noise in a target voltage signal low by connecting a lead wire from the target ring of an image pickup tube to a preamplifier, fitted to the external circumferential surface of the image pickup tube, without long meandering winding. CONSTITUTION:A target ring 10a fitted in the front part of an image pickup tube 10 is connected to the terminal 11a of a yoke 11 projecting from the edge part of a flare-preventing mask 14. Then, a guide part 16 is formed between the external circumferential surface of the yoke 11 and the internal circumferential surface of a yoke case 13. The target voltage terminal 18a of a preamplifier case 18 and the terminal 11a of the yoke 11 are connected mutually by a lead wire 19 through said guide path 16. Since the preamplifier case 18 is fitted on the external circumferential surface of the yoke 11, the lead wire 19 is shortened, and further since the lead wire 19 is shielded by a yoke case 13, noise in a target signal is suppressed low. |
