Patent ID: 8582018
Filing Date: 2013-11-12
Classification: G02B,G03B,H04N

Abstract:
1. An imaging device comprising: a detector configured to repeatedly carry out a series of operations of generating evaluation values to evaluate a degree of focusing for each position of a lens after driving the lens based on a drive instruction by a focus adjusting element that changes or adjusts a focal length depending on supplied power toward one end part in a drive range of the lens, the detector detecting the evaluation value of a position that is closer to the end part than a position of an evaluation value of a highest degree of focusing and is immediately adjacent or adjacent across a predetermined number of positions to the position of the evaluation value of the highest degree of focusing; and a drive controller configured to cause the series of operations be repeatedly carried out toward the other end part in the drive range of the lens, and drive the lens to a position of a degree of focusing not smaller than the detected evaluation value based on the detected evaluation value, wherein the drive instruction relating to the series of operations repeatedly carried out toward the one end part is a drive instruction for driving the focus adjusting element a predetermined number of times, and the drive controller drives the lens one time toward the other end part based on the drive instruction for driving the focus adjusting element a smaller number of times than the predetermined number of times, after repeatedly carrying out the series of operations toward the other end part.