Patent ID: 8780455

Claim:
A lens driving apparatus configured to move a magnification-varying lens, to move a focus lens in order to compensate for image plane variation caused by movement of the magnification-varying lens, and to perform a zoom position display, the apparatus comprising: a zoom operating member configured to be operated by a user to move the magnification-varying lens; a motor configured to move the magnification-varying lens based on an operation amount of the zoom operating member; a zoom controller configured to perform an open-loop control of a drive of the motor; a focus actuator configured to move the focus lens; a focus controller configured to control drive of the focus actuator; a memory configured to store cam data to compensate for the image plane variation, the cam data showing a relationship between a position of the magnification-varying lens and a position of the focus lens; and a zoom position detector configured to detect an actual position of the magnification-varying lens, the zoom position detector capable of detecting the actual position of the magnification-varying lens by detecting a scale arranged in a moving direction of the magnification-varying lens, wherein, during a magnification variation operation by the zoom controller, the focus controller controls the drive of the focus actuator based on (a) the actual position of the magnification-varying lens detected by the zoom position detector and (b) the cam data, and wherein the zoom position display is not changed when changing of the actual position of the magnification-varying lens is detected by the zoom position detector when the motor is not driven.