Drive apparatus for zoom lens barrel

摘要

A drive apparatus for a zoom lens barrel, in which at least two movable zooming lens groups are moved upon zooming, includes lens frames which respectively hold the two movable zooming lens groups, two parallel drive plates which are provided with cam grooves and which are pivoted to a common shaft to move the two movable zooming lens groups, a pair of drive gears which are in mesh with corresponding sector gears of the drive plates, and two drive mechanisms which individually drive the drive gears upon zooming.