Patent ID: 8184381

Claim:
A lens driving-control device, comprising: a plurality of lens groups having variable magnification function; a plurality of lens driving devices each of which being configured to adjustably drive a driving speed of each of the plurality of lens groups; a control device configured to control each of the plurality of lens driving devices to adjust the driving speed of each of the plurality of lens groups; and a plurality of lens position-detecting devices each of which being configured to detect a position of each of the plurality of lens groups, wherein when the plurality of lens driving devices drive the plurality of lens groups simultaneously, the control device is configured to control the driving speeds of the lens driving devices by switching the driving speeds based on a positional relationship among the plurality of lens groups, the positional relationship being detected by the lens position-detecting devices, and the positional relationship indicating a distance between adjacent lens groups, wherein the control device is configured to, when an other lens group with respect to a subject side-lens group of the plurality of lens groups exceeds a first predetermined position in approaching the subject side-lens group, adjust a driving speed of the other lens group so that the subject side-lens group and the other lens group do not further approach, and configured to adjust a driving speed of the subject side-lens group so that the subject side-lens group and the other lens group do not further approach when the other lens group exceeds a second predetermined position, which is closer to the subject side-lens group than the first predetermined position, in approaching the subject side-lens group.