| 摘要 |
PURPOSE:To relieve the evil effect to a photographed picture in the driving and operation of a photographing lens that especially requires the promptness and accuracy for a TV camera, by adding a secondary battery within a servo control system of the lens. CONSTITUTION:When the electric power is supplied to a TV camera 10 from a DC power supply 14, the current is always charged to a secondary battery 18 via an electric control system 12 of the main body of the camera 10. In case the servo control driving is applied to the zooming, focusing, iris control and other operations during the photographing, the battery 18 is discharged according to these control driving operations. The discharged current is supplied to an electrical control part 17 of the servo control driving system of the lens main body 15. No fluctuation of voltage is caused to the electrical control system at the side of the camera main body just by supplying a substantially certain current to the battery 18 even under the driving of the servo control. As a result, no unstable picture is formed. |
