| 摘要 |
PROBLEM TO BE SOLVED: To provide a television lens which has superior noise resistance by arranging an unnecessary radiation noise removing filter in the path of a power supply line to a DC motor provided to the driving means for the television lens. SOLUTION: In the path of the power supply line 56 connecting the DC motor 52 arranged in the driving means for the focusing, zooming, etc., of the television lens and a motor driver 54 which drives the DC motor 52, EMI removing filters (e.g. ferrite bead inductor) 58 and 58 are arranged at the closest position to the DC motor 52. Electromagnetic wave noise generated by the DC motor 52 is absorbed by the EMI removing filters 58 and 58 in the early stage of transmission through the power supply line 56, so that the transmission is stopped. |
