Apparatus and method for controlling the feeding of an automatic focusing lens by a DC motor

摘要

The present invention relates to an apparatus and a method for controlling the feeding of an automatic focusing lens by a DC motor and includes a release switch, a focusing means, a feeding lens driving means, and a feeding lens And a control signal outputting means for outputting a control signal to the directing lens driving means so that focus adjustment according to the determined focal length is performed by judging a focal distance by using a signal outputted from the side means according to an operation signal of the release switch, And controlling means for controlling the directing lens driving means at a high speed, a constant speed, and a stop according to a signal state judged by judging a signal output from the directing lens movement detecting means. In accordance with an input of a signal for starting photographing, And calculates the focal distance by calculating the distance between the camera and the camera, The lens is moved so that the corresponding focus adjustment is performed, the moving lens moving state adjustment corresponding to the high-speed control is performed by sensing the moving speed of the directing lens, and the constant velocity By controlling the movement of the directing lens corresponding to the control and controlling the movement of the directing lens by the slip phenomenon, the performance of the camera is improved by positioning the directing lens at the correct position, thereby improving the reliability of the camera, Is possible.