Automatic focusing device

摘要

An automatic focusing device comprises a motor operated by a range signal, a lens moving system in which a lens is moved by the motor, a clutch for engaging and disengaging the motor from the lens moving system and a power switch for the motor. A switchover member is provided which is selectively settable to a manual mode, and auto-focus mode and a focus-lock mode. The modes are changed over by a combination of an engagement or disengagement of the clutch by the switchover member and a switchover of the power switch (between ON and OFF) by the switchover member.