Patent ID: 8532477
Filing Date: 2013-09-10
Classification: G02B

Abstract:
1. A lens control device that controls movement of a first lens by a first drive unit to vary magnification of an object image, and controls movement of a second lens by a second drive unit to correct a change in an image forming position caused by the movement of the first lens, comprising: a storage unit configured to store a positional relationship between the first lens and the second lens, on an object distance-by-object distance basis; and a system controller configured to calculate, when the first lens is within a first range, a position of the second lens based on the stored positional relationship using a calculating method different from that used when the first lens is within a second range, and cause the second drive unit to move the second lens to the calculated position, wherein the second range is a range within the positional relationship stored in the storage unit, and the first range is a range outside the second range on a side of the telephoto end.