Patent ID: 7777968
Filing Date: 2010-08-17
Classification: G02B,G03B

Abstract:
1. A photographing lens driving control apparatus, comprising: a plurality of lens groups constituting a zooming optical system including a lens group on an object side and a lens group on an imaging side; a plurality of lens driving devices configured to drive the plurality of lens groups, respectively; and a control device configured to control the plurality of lens driving devices, wherein the control device adjusts a driving speed of the lens group on the object side according to a position of the lens group on the imaging side relative to a position of the lens group on the object side, when driving the lens group on the object side, wherein the control device sets a first predetermined position on the object side and sets a second predetermined position on the imaging side regarding moving positions of the lens group on the object side and the lens group on the imaging side, so as to set a group interval retaining zone of the lens group on the object side and the lens group on the imaging side between the first predetermined position and the second predetermined position, wherein the control device adjusts the driving speed of the lens group on the object side such that the lens group on the object side does not further come close to the lens group on the imaging side, in which case the lens group on the imaging side comes close to the lens group on the object side when the lens group on the object side is located on the object side beyond the first predetermined position, and wherein the control device adjusts the driving speed of the lens group on the object side such that the lens group on the imaging side does not further depart from the lens group on the object side, in which case the lens group on the imaging side is located on the imaging side beyond the second predetermined position.